JP2001281594A - Scanning display device and optical scanner for retina - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform good image processing, while suppressing the increase of the quantity of image information. SOLUTION: The scanning display device for retina consists of two light sources 1, 2, optical modulators 3, 4, an optical scanner 5, optical scanning drivers 8, 9, a lens 10 of an eyepiece optical system, a microcomputer or the like. The optical scanner 5 is provided with two reflecting mirror units 6, 7 having different optical scanning ranges respectively. An image irradiated by the reflecting mirror unit 7 for wide range is perceived by the retina of an eyeball E in a comparatively large range including a viewing peripheral part. Meanwhile, an image irradiated by the reflecting mirror unit 6 for narrow ranges is perceived by the retina of the eyeball E in a comparatively narrow range near a viewing central part. Thereby, two kinds of images having different resolution (image quality) and optical scanning ranges are simultaneously produced by each reflecting mirror units 6, 7, and the user can perceive simultaneously the image of a wide angle of view giving high reality and the image of a narrow angle of view with high definition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device (HMD: head mounted display) which is always worn on a user's head and used, or a display device which is used by approaching a user's eyeball when used. More specifically, two visible rays are directly applied to the user's retina.
The present invention relates to a retinal scanning display device that performs dimensional scanning and perception, and an optical scanning device used therefor.

[0002]

2. Description of the Related Art Conventionally, a number of display devices, ie, HMDs, which can be mounted on a user's head and receive some image information as they are, that is, HMDs, have been studied in many cases, and some have been shipped as products. is there. This H
Since the MD is always worn on the head, the necessary image information naturally enters the field of view without the user's particular consciousness, and thus a display for a portable information terminal such as a wearable computer which will be realized in the future. Promising as a device. In many of these currently shipped HMDs, an image projected on a two-dimensional display device such as a small liquid crystal device is guided to a user's eyeball by using an optical system such as a reflecting mirror or a lens. I have.

Although reduction in size and weight is an essential issue for HMDs, in this conventional system, the display device and the optical system have a trade-off relationship with each other. That is, when a display device is reduced in size, an optical system for enlarging an image displayed on the display device to a size recognizable by a user becomes complicated and large, and conversely, in order to reduce the size of the optical system, The display device must have a correspondingly large display surface.

[0004] Apart from this, the HMD has a problem that the user may feel uncomfortable due to the inconsistency between convergence and focus adjustment, especially when displaying a stereoscopic image. There is a problem that it is unsuitable to be mounted on a vehicle. If the HMD is used as a tool for watching a movie or the like for a short time, there is still no problem. However, when the HMD is used as a tool for presenting image information of a portable information terminal, it is desirable that the HMD be worn at all times, thereby reducing discomfort. Is an important issue.

[0005] It is said that this is a valid solution to the above problem.
It is a retinal direct drawing type display disclosed in -502372 and the like. The display method is completely different from the conventional method, in which a point light source of visible light such as a laser beam is directly two-dimensionally scanned on the retina to perceive an image. If this method is used, a two-dimensional display device and a complicated optical system are not required, and it is considered that ultimate miniaturization can be achieved by miniaturizing the scanning system. In addition, since the image is not focused on the retina but reaches the retina with a point light source, the problem of inconsistency between convergence and focus adjustment does not occur.

In addition, as a function expected of the HMD as well as a reduction in size and weight, there is a function of displaying a more realistic image. This is intended to provide information of the outside world only with artificially created images, thereby presenting a virtual reality world (VR: virtual reality) to the user. At present, a huge display that covers the periphery of the subject is often used for this purpose, but if it can be realized with a device that can be carried by the user, such images can be more easily obtained. You can enjoy.

In order to present such highly realistic image information, it is necessary to increase the viewing angle. For this reason, it is difficult to reduce the size of the conventional HMD, for example, by increasing the display area itself. Although such a method is necessary, a scanning display can be realized by increasing the deflection angle of the scanner, and is also advantageous in this respect.

[0008]

However, as a problem in displaying an image with a wide viewing angle on a retinal scanning display, an attempt to present an image with a wide viewing angle while increasing the resolution of the image is a problem. There are problems such as an increase in the amount of information, an increase in a necessary memory amount, and an inability to keep up with image processing. Further, if an image having a wide viewing angle is used without changing the amount of information of the image, there is a problem in that the image loses its definition.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a retinal scanning display capable of performing good image processing while suppressing an increase in the amount of image information. It is an object of the present invention to provide a device and an optical scanning device suitable for realizing the device.

[0010]

According to a first aspect of the present invention, there is provided a retinal scanning display device including a plurality of optical scanning units having different optical scanning ranges, and a visible light beam is two-dimensionally scanned by the plurality of optical scanning units. . At this time, images having different light scanning ranges (viewing angles) are respectively radiated to the eyeball and perceived on the retina.

The retinal scanning display device according to the second aspect of the present invention includes a plurality of optical scanning means for optically scanning images having different resolutions, respectively, and a visible light beam is two-dimensionally scanned by the plurality of optical scanning means. You. At this time, images having different resolutions are respectively radiated to the eyeball and perceived on the retina.

According to the first and second aspects of the present invention, a plurality of optical scanning means have different optical scanning ranges or different resolutions of images to be optically scanned, so that an image requiring high definition (high-definition image) can be obtained. , And an image that is not required can be presented at the same time. That is, in order to present a high-definition image, measures such as reducing the optical scanning range of the optical scanning unit or increasing the resolution of the optical scanning unit may be performed. In this case, for a high-definition image in which the amount of image information tends to increase, the information amount of the image can be arbitrarily adjusted by adjusting the optical scanning range or the resolution of the corresponding optical scanning unit. As a result, good image processing can be performed while suppressing an increase in the amount of image information.

According to a third aspect of the present invention, there is provided a retinal scanning display device, comprising: a wide-range image optical scanning means for optically scanning a low-resolution image over a relatively wide area; and an optical scanning means for optically scanning a high-resolution image over a relatively narrow range. And a light scanning unit for a narrow range image for performing the operation. That is, in each of these optical scanning units, for example, visible light is two-dimensionally scanned in the entire visual field region in which an image is to be perceived and in a smaller region. At this time, the images presented by the respective light scanning means are simultaneously irradiated on the eyeball and perceived on the retina.

According to this configuration, a high immersion feeling can be obtained by a wide viewing angle image optically scanned over a relatively wide range, and a high sense of reality can be given to the user. Further, a high-resolution image (high-definition image) can be obtained from an image with a narrow viewing angle optically scanned in a relatively narrow range. That is, the user can simultaneously perceive a wide viewing angle image that gives a high sense of reality and a high definition narrow viewing angle image. At this time, since the optical scanning means for irradiating the retina with the high-definition image (the optical scanning means for the narrow-range image) has a relatively narrow optical scanning range, the amount of image information increases with the presentation of the high-definition image. Is suppressed. As a result, good image processing can be performed while suppressing an increase in the amount of image information.

In the present invention, the term "optical scanning means for a narrow range image" simply means that the optical scanning range is narrower than the optical scanning means for a wide range image.
Does not mean that Therefore, the present invention includes the concept that there are a plurality of “optical scanning means for a narrow range image”.

In order to obtain both a wide-range image and a narrow-range image as described above, each of the optical scanning means is provided with a light reflecting mirror reciprocatingly rotating at a predetermined deflection angle. It is preferable that the deflection angle of the image light reflecting mirror be smaller than the deflection angle of the wide-range image light reflecting mirror.

In this case, the region where the high-resolution image information (high-definition image) can be actually perceived in the human retina is a portion corresponding to the central field of view and corresponding to a viewing angle of only a few degrees. It has been known. Therefore, in an area outside the area, even if the image information can be perceived, it is not possible to distinguish even a small portion, that is, there is no need to provide high-definition image information.

Therefore, in the retinal scanning display device according to the fourth aspect, the low-resolution image is radiated to the periphery of the field of view by the light scanning means for a wide area image, and the center of the field of vision is irradiated by the light scanning means for a narrow area image. The part is irradiated with a high-resolution image. In short, a high-resolution image is given only to the central field of view on the retina where high-resolution image information (high-definition image) can be perceived. Gives resolution image information (not very fine images). Thus, the optical scanning range for presenting a high-resolution image can be limited to the optimal range, and the increase in image information can be further suppressed.

On the other hand, in the human field of view, the viewable angle at the central portion is not so different between the vertical direction (up and down direction of the user) and the horizontal direction (right and left direction of the user), but the peripheral portion is not so different. With respect to (1), the viewing angle is much larger in the horizontal direction (left-right direction) than in the vertical direction (up-down direction), and the area that can be seen even when gazing is not possible is wide. Therefore, in the retinal scanning display device according to the fifth aspect, with respect to the light scanning means for the narrow range image, one of the two-dimensional scanning directions performs the light scanning in the narrow range, and the other performs the light scanning for the wide range image. Optical scanning is performed over the same wide area as the optical scanning means. In this case, in the optical scanning unit for the narrow range image, one scan is driven independently of the optical scanning unit for the wide range image, but the other scan is driven in common with the optical scanning unit for the wide range image. Is done. That is, the scanning driver can be shared, and the size and weight of the display device can be reduced.

In the retinal scanning display device according to the sixth aspect, the actuator is driven based on the direction of the eyeball's line of sight detected by the line of sight detection means, and the direction of the light scanning means for a narrow range image is linked with the movement of the eyeball. Therefore, the optical scanning unit can set the optical scanning range following the line of sight. Thereby, it can be adjusted so that the narrow range image always exists in the center of the user's field of view.

In the retinal scanning display device according to the present invention, each of the light scanning means for the wide-range image and the narrow-range image includes a light reflecting mirror, and the wide-range image signal and the narrow-range image signal correspond to each other. Light reflecting mirrors are separately irradiated. In this case, an image with a wide viewing angle and an image with a narrow viewing angle can be respectively presented to the user's retina by the wide-range image signal and the narrow-range image signal applied to each light reflecting mirror.

In the retinal scanning display device according to the ninth aspect, each image signal for a wide range and a narrow range is separated by a spectral unit into a wavelength corresponding to a coating applied to a reflection surface of a light reflecting mirror. , Each image signal is combined into one light beam by the signal combining means and supplied to each light reflecting mirror. Then, the light reflecting mirrors of the respective light scanning means reflect only light signals (image signals) of specific different wavelengths according to the coating applied to each reflecting surface. That is, each image signal is supplied by one light beam to both the light scanning means for the wide area image and the light scanning means for the narrow area image, and each image signal is supplied to each light scanning means (light reflecting mirror). Appropriately divided into ranges. Each of the reflecting mirrors performs optical scanning in the corresponding optical scanning range. In such cases,
Since each image signal is combined into one light beam, a space for passing the light beam is reduced, and the size of the display device can be reduced.

Further, in the retinal scanning display device according to the tenth aspect, each image signal for a wide range and a narrow range is converted into:
The optical signal having a polarization plane corresponding to the coating applied to the reflection surface of the light reflecting mirror is polarized by the polarizing means, and then each image signal is combined into one light flux by the signal combining means. Supply. Then, the light reflecting mirrors of the respective light scanning means reflect only light signals (image signals) of specific different polarization planes according to the coating applied to each reflection plane. That is, similarly to the ninth aspect of the present invention, each image signal is supplied by one light beam to both the light scanning means for the wide area image and the light scanning means for the narrow area image, and each light scanning means (light reflecting mirror) Thus, each image signal is appropriately divided into a wide range signal and a narrow range signal. Each of the reflecting mirrors performs optical scanning in the corresponding optical scanning range. In such cases,
Since each image signal is combined into one light beam, a space for passing the light beam is reduced, and the size of the display device can be reduced.

In the retinal scanning display device according to the ninth and tenth aspects, as described in the eleventh aspect, the respective light reflections are located inside the diameter of one light beam synthesized by the signal synthesizing means. A mirror should be placed. In this case, the one combined light beam is reflected by each light reflecting mirror, and can be appropriately separated for each light scanning range.

In the retinal scanning display device according to the twelfth aspect, the light scanning means for the narrow range image has a variable light scanning range. In this case, an appropriate optical scanning range can be set in each case according to various factors such as the type and use of an image, and it is possible to satisfy a user's detailed requirements.

In the retinal scanning display device according to the thirteenth aspect, each of the light reflecting mirrors provided in the light scanning means for the wide-range image and the narrow-range image is reciprocated at a predetermined deflection angle, whereby each light is reflected. The optical signal reflected by the mirror is guided to the eye via the main optical system and converges on the eye. In particular, in the present invention, the sub optical system is disposed before the main optical system toward the eyeball, and the optical scanning angle (the main optical system) of the optical signal emitted from the light reflecting mirror for a narrow range image is arranged by the sub optical system. Angle of incidence on light). In this case, the image irradiated to the eyeball through the sub optical system and the main optical system has a narrower light scanning range than the image irradiated to the eyeball only through the main optical system,
An image signal with high resolution (high pixel density) can be presented in the light scanning range (narrow range).

Therefore, a wide-area image giving a high sense of reality and a high-definition narrow-area image can be simultaneously presented to the user. At this time, a high-resolution image (high-definition image)
Is presented only in a limited narrow area, so that there is no inconvenience that the amount of image information increases with the presentation of a high-definition image. As a result, good image processing can be performed while suppressing an increase in the amount of image information.

In the retinal scanning display device according to the fourteenth aspect, the main optical system is different from the thirteenth aspect in that the main optical system transmits an optical signal reflected by a light reflecting mirror for a wide range image to an eyeball. Guide and converge. In addition, the sub optical system
The curvature for converging the optical signal is different from that of the main optical system, and the optical signal reflected by the light reflector for the narrow range image is directly guided to the eyeball and converged.

In this configuration, in addition to the wide-area image from the light reflector for the wide-area image, a narrow-range image can be presented to the eyeball from the light reflector for the narrow-area image. In this case, claim 1
Similar to the third aspect, it is possible to perform good image processing while suppressing an increase in the amount of image information.

In the fourteenth aspect of the present invention, as described in the fifteenth aspect, the sub-optical system is provided in a part of the main optical system, so that the size of the display device can be reduced.

Further, in the retinal scanning display device according to the sixteenth aspect, a sub-optical system is disposed between the main optical system and the eyeball as a difference from the thirteenth aspect of the present invention. The light signal emitted from the light reflector for the range image converges on the eyeball.

In this configuration, in addition to the wide-area image from the light reflector for the wide-area image, a narrow-range image can be presented to the eyeball from the light reflector for the narrow-area image. In this case, claim 1
Similar to the third aspect, it is possible to perform good image processing while suppressing an increase in the amount of image information.

In the invention according to any one of the thirteenth to sixteenth aspects, as described in the seventeenth aspect, optical signals having different wavelengths or polarization planes are provided as image signals for a wide range and a narrow range, respectively. The optical system transmits only an image signal having a specific wavelength or a plane of polarization, so that the image signal for a wide range is prevented from passing through the sub-optical system. Therefore, it is possible to avoid such a problem that the image signal for a wide range bends in an unexpected direction due to the transmission through the sub-optical system, and the signal does not converge at the eyeball (specifically, the crystalline lens) and the image is blurred.

According to another aspect of the present invention, there is provided a light reflecting mirror for a wide-range image and a light reflecting mirror for a narrow-range image. It is preferable to provide a shielding member between the light shielding mirror and the light reflecting mirror for shielding the light reflected by the light reflecting mirror for a wide range image. in this case,
The shielding member prevents the wide-range image signal from passing through the sub-optical system, and as a result, it is possible to avoid the inconvenience that the wide-range image signal does not converge on the eyeball (specifically, the crystalline lens) and the image is blurred.

In any of the above-mentioned inventions, the light reflecting mirrors for the wide-range image and the narrow-range image preferably have the same deflection angle. In this case, when driving each light reflecting mirror, the same light scanning driver can be shared, and the configuration as the light scanning means can be simplified.

Further, as described in claim 20, the position of the light reflecting mirror for a narrow range image is made variable in the front-back direction toward the eyeball, so that it can be changed according to various factors such as the type and use of the image. Thus, a suitable image display area can be set each time, and it is possible to satisfy the user's detailed requirements.

Further, in the retinal scanning display device according to the twenty-first aspect, the light reflecting mirror for a wide range image, the light reflecting mirror for a narrow range image, the main optical system, and the sub optical system are arranged on the same axis. Therefore, simplification and downsizing of the configuration of the present display device can be realized.

On the other hand, in the retinal scanning display device according to the present invention, the projection surface of the image is formed by a spheroid in which the positions of the crystalline lens of the eyeball and the optical scanning means are two focal points. In this case, the optical signal emitted from the optical scanning means is reflected on the projection surface, always passes through the crystalline lens of the eyeball and is converged here, and then is projected on the retina. Therefore, it is possible to draw an image on the retina most efficiently. Become.

Hereinafter, the invention of an optical scanning device for realizing the retinal scanning display device according to any one of claims 3 to 6 will be described. In the optical scanning device according to the twenty-third aspect, each of the optical scanning means for a wide-range image and a narrow-range image includes a light reflecting mirror, and each of the light reflecting mirrors is driven independently in a two-dimensional scanning direction. Therefore, different optical scanning ranges can be easily and suitably set in each optical scanning means. Thereby, an optical scanning device suitable for the retinal scanning display device of the present invention can be provided.

In the optical scanning device according to the twenty-fourth aspect, the optical scanning means for the wide-range image and the narrow-range image each include a light reflecting mirror, and each of the light reflecting mirrors has a two-dimensional scanning direction. , One is driven in common and the other is driven separately. In this case, the scanning driver can be shared,
It is possible to further reduce the size and weight of the optical scanning device. The present invention is particularly effective means for realizing the retinal scanning display device according to claim 5.

In the optical scanning device according to the twenty-fifth aspect, one of the light reflecting mirrors for a wide-range image or a narrow-range image is formed in a frame shape, and the other light reflecting mirror is disposed inside the frame.
That is, a light reflector for a narrow range image is arranged inside the light reflector for a wide range image, or a light reflector for a wide range image is arranged inside the light reflector for a narrow range image. According to this configuration, in addition to the reduction in size and weight by sharing the driver described in claim 24, the reduction in size and weight can be realized by contriving the arrangement of the light reflecting mirror.

In the optical scanning device according to the twenty-sixth aspect, the optical scanning device is provided in the optical scanning means for a wide-range image and a narrow-range image, respectively.
The light reflecting mirror has a coating on a reflecting surface that reflects only light of a specific different wavelength. In this case, in each light reflecting mirror (light scanning means), each image signal is appropriately divided into a wide range and a narrow range, so that light scanning can be performed in a corresponding light scanning range.

In the optical scanning device according to the twenty-seventh aspect, the optical scanning device is provided in the optical scanning means for a wide-range image and a narrow-range image, respectively.
The light reflecting mirror includes a coating on the reflecting surface that reflects only light of a specific different polarization plane. In this case, in each light reflecting mirror (light scanning means), each image signal is appropriately divided into a wide range and a narrow range, so that light scanning can be performed in a corresponding light scanning range.

In the optical scanning device according to the present invention, the optical scanning device for a wide range image and the optical scanning device for a narrow range image are integrated, so that the size of the optical scanning device can be further reduced. Can be planned.

[0045]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a typical configuration of a retinal scanning display device, and FIG. 2 is a perspective view showing a configuration of the display device. The display device is embodied as a display device (HMD) that is always worn on the head of the user, or a display device that is used in close proximity to the eyeball of the user. A light stimulus is directly applied to the retina R of the camera to perceive image information.
1 and 2 show only a monocular configuration.

This display device has two light sources 1 and 2
And light modulators 3 and 4 for modulating light from each of the light sources 1 and 2 according to video information given to a user;
An optical scanning device 5 for converting an optical signal from the optical scanning device 4 into two-dimensional information, optical scanning drivers 8 and 9 for driving the optical scanning device 5, and an eyepiece for efficiently irradiating the user's eyeball E with two-dimensional image information. The optical system includes a lens 10 of an optical system, a microcomputer (control unit) 11 that outputs control signals to the optical modulators 3 and 4 and the drivers 8 and 9 based on image information input from the outside.

The light scanning device 5 includes two reflecting mirror units 6 and 7 having different light scanning ranges, respectively.
The narrow-range reflecting mirror unit 6 having a narrow optical scanning range is driven by a driver 8, and the wide-range reflecting mirror unit 7 having a wide optical scanning range is driven by a driver 9. That is, each of the reflecting mirror units 6 and 7 is independently driven in the two-dimensional direction. As the driving power for driving each of the reflecting mirror units 6 and 7, an electrostatic force, an electromagnetic force, or the like can be used.

The narrow range reflector unit 6 is irradiated with an image signal S1 (hereinafter referred to as a narrow range image signal) transmitted from the optical modulator 3, and the wide range reflector unit 7 is subjected to light modulation. An image signal S2 (hereinafter referred to as a wide-range image signal for convenience) transmitted from the device 4 is emitted. At this time, the light scanning range is set in the entire viewing area on which the image is to be perceived on the wide-area reflector unit 7 side.
The wide-range image signal S2 is two-dimensionally scanned within the optical scanning range. On the other hand, on the narrow-range reflecting mirror unit 6 side, the optical scanning range is set in a smaller area than on the wide-range reflecting mirror unit 7 side, and the narrow-range image signal S1 is two-dimensionally set within the optical scanning range. Scanned.

Here, the detailed configuration of the optical scanning device 5 is shown in FIG.
This will be described with reference to FIG. The optical scanning device 5 includes two reflecting mirror units 6 and 7 integrated in a rectangular outer frame 21. Each of the reflecting mirror units 6 and 7 will be described individually.
, An inner frame 23 supported by a pair of left and right rotation shafts 22 and capable of reciprocating rotation about the rotation shaft 22, and supported by a pair of upper and lower rotation shafts 24 with respect to the inner frame 23. And a narrow-range reflecting mirror 25 that can reciprocately rotate. Thereby, the narrow range reflector 2
5 can swing freely in the vertical direction (up-down direction) and the horizontal direction (left-right direction), thereby enabling two-dimensional scanning of optical signals.

The wide-range reflecting mirror unit 7 is supported by a pair of left and right rotation shafts 26 with respect to the outer frame 21, and is rotatable reciprocally around the rotation shaft 26. A wide-range reflecting mirror 29 supported by a pair of upper and lower rotating shafts 28 and reciprocally rotatable about the rotating shaft 28. As a result, the wide-range reflecting mirror 29 can freely swing in the vertical direction (up-down direction) and the horizontal direction (left-right direction) similarly to the narrow-range reflecting mirror 25, and two-dimensional scanning of an optical signal becomes possible. . In FIG. 3,
Although the reflecting mirror units 6 and 7 are arranged on the left and right, they may be arranged vertically.

FIG. 4 shows an image signal S for the optical scanning device 5.
FIG. 4 is a plan view showing a state where the first and the second S1 are given. The narrow-range image signal S1 is separately radiated to the narrow-range reflector unit 6 and the wide-range image signal S2 is radiated to the wide-range reflector unit 7, and these image signals S1 and S2 are respectively reflected by the respective mirrors 25 and 25. The light is reflected by 29 to regions having different viewing angles. In the drawing, θ1 and θ2 indicate the deflection angles of the respective reflecting mirror units 6 and 7 (θ1 <θ2).

Next, the operation of the retinal scanning display device will be described with reference to FIG. The visible light emitted from the light sources 1 and 2 is converted into image signals S1 and S2 by the light modulators 3 and 4, respectively.
After that, the light is irradiated on the optical scanning device 5. In the optical scanning device 5, the reflecting mirror units 6, 7 are driven in two-dimensional directions of up, down, left, and right by drivers 8, 9, and each of the reflecting mirror units 6, 7 transmits an image signal transmitted from the optical modulator 3, 4. S1 and S2 are two-dimensionally scanned. The driving signals for driving the reflecting mirror units 6 and 7 are given to the drivers 8 and 9 at the same frequency or different frequencies. However, comparing the driving signals of the drivers 8 and 9, the driving signal for the narrow-range reflecting mirror unit 6 has a lower voltage level, so that the deflection angle of the reflecting mirror 25 is small and the light is relatively narrow. The scanning angle (viewing angle) is set.

The image signals S1 and S2 reflected by the narrow-range and wide-range reflecting mirror units 6 and 7 at different optical scanning angles are directly radiated to the retina R of the eye E via the lens 10. Is perceived by the user. In FIG. 2, P1
Is a display image on the lens 10, P2 is a display image on the retina R, and P3 is an enlarged view of P2.

In such a case, the reflecting mirror unit 7 for a wide area
The image irradiated by the (wide-area reflecting mirror 29) is perceived by the retina R in a relatively wide area including the periphery of the field of view, while the narrow-area reflecting mirror unit 6 (the narrow-area reflecting mirror 2) is used.
The image illuminated by 5) is perceived by the retina R in a relatively narrow range near the center of the field of view. In other words, a low-resolution image is presented in a wide range, and a high-resolution image (high-definition image) is presented in a narrow range, so that the user can simultaneously perceive images having different resolutions.

In short, the region where a high-definition image can be recognized on the human retina R is limited to only a small portion corresponding to the central portion of the visual field, and the other portions corresponding to the peripheral portion of the visual field do not have the ability. There is no need to present high definition images. Therefore, a high-definition image is given only to the central field of view on the retina R,
The lower part of the image information is not enough to get a high degree of immersion on the outer part (less detailed image)
give.

In the area where the narrow-range image signal S1 and the wide-area image signal S2 are illuminated in an overlapping manner, that is, in the central area of the field of view, the overlapping image information is the same image having only a different resolution. Therefore, the wide-range image signal S2 having the lower resolution may or may not be irradiated. When the image signal S2 is not irradiated at the overlapping portion of each of the image signals S1 and S2, the optical signal emitted from the optical modulator 4 may be cut only at the corresponding portion.

According to the present embodiment described in detail above, the following effects can be obtained. Since two types of images having different resolutions (image quality) and different optical scanning ranges are simultaneously presented by the narrow-range and wide-range reflecting mirror units 6 and 7, a wide viewing angle image providing a high sense of reality and a high definition image are provided. The user can simultaneously perceive the narrow viewing angle image and the narrow viewing angle image. At this time, since the light scanning range of the narrow-range reflecting mirror unit 6 is relatively narrow, an increase in the amount of image information accompanying presentation of a high-definition image is suppressed. In addition, there is no need to increase the scanning frequency of the reflector unit 6 to present a high-definition image. As a result, in the present display device, it is possible to perform good image processing while suppressing an increase in the amount of image information.

A low-resolution image is radiated to the periphery of the field of view by the wide-range reflector unit 7 and the narrow-range reflector unit 6 is irradiated.
Thus, the high-resolution image is irradiated to the center of the field of view, so that the optical scanning range for presenting the high-resolution image can be limited to the optimum range, and the increase in the image information can be further suppressed.

Further, as the optical scanning device 5, the two-dimensional scanning directions of the narrow-range and wide-range reflecting mirror units 6 and 7 are independently driven. Different light scanning ranges can be easily and suitably set. Thus, an optical scanning device 5 suitable for the present display device can be provided. Further, since the reflecting mirror units 6 and 7 for the narrow range and the wide range are integrated, the size of the optical scanning device 5 can be reduced.

Hereinafter, other embodiments of the present invention will be sequentially described. However, in the present embodiment, those that are the same as those in the above-described first embodiment will be described in a simplified manner, and the description will focus on differences from the first embodiment.

(Second Embodiment) FIG. 5 is a block diagram showing a retinal scanning display device according to a second embodiment. FIG. 5 differs from FIG. 2 in that a line-of-sight tracking function is added in which the line-of-sight direction of the user is detected, and the narrow-range reflector unit 6 is interlocked with the line-of-sight direction. Specifically, a line-of-sight detection sensor 31 as a line-of-sight detection unit is provided, and the detection result of the line-of-sight detection sensor 31 is taken into the microcomputer 11. The microcomputer 11 drives the actuator 32 based on the user's gaze direction (pupil position information and the like) detected by the gaze detection sensor 31 to cause the narrow-range reflector unit 6 to follow the movement of the eyeball. That is, the movement of the narrow-range reflector unit 6 is feedback-controlled so that the high-definition image (narrow-range image) presented by the narrow-range reflector unit 6 always exists in the center of the user's field of view. However, at this time, the display position of the narrow range image in the entire field of view is changed by the control of the narrow range reflector unit 6, so that the microcomputer 11 sequentially grasps the display position of the narrow range image and accordingly narrows down the display position. A process for generating the range image signal S1 may be performed.

The line-of-sight detection sensor 31 detects the direction of the line of sight by irradiating the pupil with infrared rays or the like and detecting the direction of the line of sight from the reflected light. It can be realized by the type that performs. Further, the actuator 32 is provided with the narrow range reflecting mirror unit 6.
Is provided separately from the two axes for two-dimensional scanning of, and changes the direction of the entire unit.

FIG. 6 shows an example of the optical scanning device 5 for realizing the display device of the present embodiment. FIG. 3
Explaining the difference, the movable frame 34 is provided outside the inner frame 23 in the narrow range reflector unit 6.
The inner frame 23 is supported by the pair of left and right rotation shafts 22 with respect to the movable frame 34. At the four corners of the movable frame 34, there are provided bars 33 which reciprocate in a direction perpendicular to the plane of the drawing. The bar 33 is
As shown in the figure, the number of the movable frames 34 is not necessarily four, and can be arbitrarily changed as long as the direction of the movable frame 34 can be changed. For example, instead of the lower two bars 33, one bar 33 (a total of three bars 33) may be provided at the center thereof.

FIG. 7 is a plan view showing an outline of the optical scanning device 5. The actuator 32 is provided on the back of the narrow range reflecting mirror unit 6. In this case, when the bar 33 moves back and forth by the actuator 32, the direction of the narrow range reflecting mirror unit 6 is changed, and the display position of the narrow range image is changed.

As described above, according to the second embodiment, the display position of the narrow range image can be set following the user's line of sight, and a high definition image can always be presented at a desired position. It becomes possible.

(Third Embodiment) In each of the above embodiments, it has been described that the narrow-range reflector unit 6 and the wide-range reflector unit 7 are irradiated with separate image signals S1 and S2, respectively. However, in the present embodiment, it is considered that the two image signals S1 and S2 are mixed to form one light beam and the two light beams are irradiated to the two reflecting mirror units 6 and 7.

FIG. 8 is a diagram showing a retinal scanning display device according to the present embodiment. In the present display device, the optical scanning device 5 of FIG. 6 having the line-of-sight tracking function will be described. That is, the direction of the narrow-range reflecting mirror unit 6 can be changed by the actuator 32, and the narrow-range reflecting mirror unit 6 is driven in conjunction with the gaze direction of the eyeball obtained by the gaze detection sensor 31. Thereby, the display position of the narrow range image can always be adjusted to the central area of the line of sight. However, the present invention may be implemented by using the optical scanning device 5 of FIG. 3 which does not have the line-of-sight tracking function.

In FIG. 8, image signals S1 and S2 issued from light sources 1 and 2 and optical modulators 3 and 4 (not shown).
Are different wavelengths λ1, λ2 depending on the spectroscopes 41 and 42, respectively.
(A at the end indicates that the signal is after the spectral separation). The image signal S1a having the wavelength λ1 is reflected by the reflecting mirror 43, changes its traveling direction, and then passes through the semi-transparent mirror 44. In addition, the wavelength λ2
Is reflected by the semi-transparent mirror 44 to change the traveling direction. As a result, the two image signals S1a and S2
“a” is combined into one light beam, and is irradiated to the optical scanning device 5. In the present embodiment, the spectroscopes 41 and 42 correspond to a spectral unit, and the reflecting mirror 43 and the semi-transmissive mirror 44 correspond to a signal combining unit.

In each of the reflecting mirror units 6 and 7 of the optical scanning device 5, the surface of the narrow-range reflecting mirror 25 and the wide-range reflecting mirror 29 has a film (a dichroic film or the like) that reflects only light of different wavelengths. ) Is coated. That is, when one light beam in which two image signals S1a and S2a are mixed is irradiated, the narrow-range reflecting mirror 25 reflects only the image signal S1a having the wavelength λ1, and the wide-range reflecting mirror 29 has the wavelength λ2. Only the image signal S2a is reflected. In other words, the image signals S1a, S1 for the narrow range and the wide range
2a is separated by the narrow range and wide range reflecting mirrors 25 and 29, respectively, and is selectively reflected.

As a result, in this embodiment, each reflecting mirror 2
At 5 and 29, the image signals are appropriately divided into two types, and a wide viewing angle image and a high definition image with a narrow viewing angle can be displayed simultaneously. Further, since each image signal is combined into one light beam, the space for passing the light beam is reduced, and the size of the display device can be reduced. Further, in the display device having the above configuration, one light beam is generated by changing the traveling direction of each of the image signals S1a and S2a. Therefore, the degree of freedom in the arrangement of the light sources 1 and 2 is increased, and the device can be made more compact. Become.

(Fourth Embodiment) In this embodiment, as in the third embodiment, two image signals S
It is considered that 1 and S2 are mixed to form one light beam, and the light beam is irradiated to the two reflecting mirror units 6 and 7.

FIG. 9 is a diagram showing a retinal scanning display device according to the present embodiment. In the display device of FIG. 9, a configuration having a line-of-sight tracking function will be described in the same manner as in FIG. 8. However, a configuration without a line-of-sight tracking function may be used.

In FIG. 9, image signals S1 and S2 issued from light sources 1 and 2 and optical modulators 3 and 4 (not shown).
Is a polarizer (or polarizing filter) 4 as a polarizing means
5 and 46, the image signals S1 each having a different polarization plane
b and S2b (b at the end represents a signal after polarization). Each of the image signals S1b and S2b is
As in the case of FIG. 8 described above, the traveling direction is changed via the reflecting mirror 43 and the semi-transmissive mirror 44, the light beam is combined into one light beam, and the light beam is emitted to the optical scanning device 5.

In each of the reflecting mirror units 6 and 7 of the optical scanning device 5, a film (a polarizing mirror) that reflects only light of different polarization planes is provided on the surfaces of the narrow range reflecting mirror 25 and the wide range reflecting mirror 29. Etc.) are coated. That is, when one light beam in which the two image signals S1b and S2b are mixed is irradiated, the narrow range reflecting mirror 25 reflects only the image signal S1b, and the wide range reflecting mirror 29 reflects the image signal S1b.
Reflects only 2b. In other words, the narrow range and wide range image signals S1b and S2b are separated by the narrow range and wide range reflecting mirrors 25 and 29, respectively, and are selectively reflected.

As described above, in the fourth embodiment, similarly to the third embodiment, the image signals are appropriately divided into two types by the reflecting mirrors 25 and 29, and a wide viewing angle image and a narrow viewing angle image are obtained. High-definition images can be displayed simultaneously. Each image signal is 1
Since the light beams are combined into two light beams, the space for passing the light beams is reduced, and the size of the display device can be reduced. In particular, the device of the present embodiment does not depend on the wavelength of an image signal (optical signal), so that a color image can be presented.

(Fifth Embodiment) In the display device according to each of the above-described embodiments, the light scanning range of the narrow range reflector unit is limited to the central part of the line of sight, and any of two-dimensional directions, up, down, left, and right Although the optical scanning range is also narrowed, in the present embodiment, the configuration is changed so that the optical scanning range of the narrow range reflecting mirror unit is narrowed in only one of the two-dimensional scanning directions.

In short, in the human visual field, the viewable angle at the central portion is not so different between the vertical direction (vertical direction) and the horizontal direction (horizontal direction). ) Has a much larger viewing angle than the vertical direction (vertical direction), and the area that can be seen even when the user cannot watch is wide. Therefore, in the present display device, with respect to the narrow range reflecting mirror unit, one of the two-dimensional scanning directions performs optical scanning in a narrow range, and the other performs optical scanning in the same wide range as the wide range reflecting mirror unit. It shall be.

FIG. 10 is a diagram showing a retinal scanning display device according to the present embodiment. Also, FIG.
It is a front view showing the composition of optical scanning device 50 used for this display, and the composition of this optical scanning device 50 differs greatly from each above-mentioned embodiment.

First, the configuration of the optical scanning device 50 is shown in FIG.
This will be described with reference to FIG. In FIG. 11, the optical scanning device 5
0 has a double inner and outer frame structure, and the outer frame 51
Is provided with an inner frame 52. The inner frame 52 is supported by a pair of left and right rotating shafts 53 with respect to the outer frame 51, and is capable of reciprocating rotation about the rotating shaft 53. Further, inside the inner frame 52, a narrow range reflecting mirror 54 and a wide range reflecting mirror 55 are provided. The two reflecting mirrors 54 and 55 are supported by a pair of upper and lower rotating shafts 56 and 57 with respect to the inner frame 52, respectively, and are capable of reciprocating rotation about the rotating shafts 56 and 57.

According to the configuration shown in FIG. 11, when the inner frame 52 reciprocates around the rotation shaft 53, the reflecting mirrors 54 and 55 for the narrow range and the wide range are integrally formed in the vertical direction (vertical direction). Rocks. The reflecting mirrors 54 and 55
It swings laterally (left-right direction) around the rotation shafts 56 and 57 individually. That is, the respective reflecting mirrors 54 and 55 are commonly driven for vertical optical scanning, but are separately driven for horizontal optical scanning.

In the apparatus of the present embodiment, as shown in FIG. 12, image signals S1 and S2 for narrow range and wide range are used.
Is applied to the corresponding reflecting mirrors 54 and 55, respectively. That is, the narrow-range image signal S1 is transmitted to the narrow-range reflecting mirror 54.
Further, the wide-range image signal S2 is divided and radiated to the wide-range reflecting mirror 55, and is reflected by the reflecting mirrors 54 and 55 to regions having different viewing angles. In FIG. 11, an area indicated by reference numeral A1 indicates an area where the light signal as the narrow-range image signal S1 is irradiated on the reflecting mirror 54, and an area indicated by reference numeral A2 indicates the light as the wide-range image signal S2. Signal is mirror 5
5 shows a region to be irradiated.

FIG. 12 shows that when the optical scanning device 50 is viewed from above, the deflection angles of the reflecting mirrors 54 and 55 are different from each other, such as θ1, θ2.
The deflection angles of 4,55 coincide.

Looking at the operation as a display device,
As shown in FIG. 10, the image signals S1 and S2 emitted from the light sources 1 and 2 and the optical modulators 3 and 4 are applied to the respective reflecting mirrors 54 and 55 of the optical scanning device 50. At this time, the reflecting mirrors 54 and 55 are commonly driven by, for example, the driver 8 for optical scanning in the vertical direction (up and down direction).
The light scanning in the horizontal direction (left and right direction) is separately driven by the drivers 8 and 9. Thereby, the display images P1, P
2 and P3, the image displayed by the narrow range reflecting mirror 54 has a vertical direction (up and down direction) of the wide range reflecting mirror 5.
5, optical scanning is performed over a wide range, whereas optical scanning is performed over a narrow range only in the horizontal direction (left-right direction). That is, in the apparatus of the present embodiment, the optical scanning range is not changed in the vertical direction where the merit of changing the optical scanning angle is low,
By changing the optical scanning range only in the horizontal direction,
The user can simultaneously perceive two types of images having different light scanning ranges.

As described above, in the fifth embodiment, the user can simultaneously perceive a wide viewing angle image and a high-definition narrow viewing angle image that provide a high sense of reality, similarly to the above-described embodiments. At the same time, it is possible to suppress an increase in the amount of image information accompanying presentation of a high-definition image. In addition, the optical scanning driver can be shared, and the size and weight of the display device can be reduced. Also, the optical scanning device 5
It is also possible to reduce the size and weight of the device.

Incidentally, in realizing the common use of the optical scanning driver, contrary to the above configuration, the vertical direction (vertical direction)
The optical scanning range of the horizontal direction (left-right direction) may be shared by two types of optical scanning ranges. In this case, each of the reflecting mirrors 54 and 55 is independently driven for the vertical optical scanning, and each of the reflecting mirrors 54 and 55 is commonly driven for the horizontal optical scanning.

(Sixth Embodiment) This embodiment is a modification of the fifth embodiment, and proposes changing the configuration of the optical scanning device from FIG. 11 to FIG.

Referring to FIG. 13, the optical scanning device 60 is
It has a heavy frame structure, and an inner frame 62 is provided inside the outer frame 61. Inner frame 62
Is supported by a pair of left and right rotation shafts 63 with respect to the outer frame 61, and is capable of reciprocating rotation about the rotation shaft 63. Inside the inner frame 62, a quadrangular frame-shaped wide-area reflecting mirror 64 is provided. The wide-range reflecting mirror 64 is supported by a pair of upper and lower rotating shafts 65 with respect to the inner frame 62, and is capable of reciprocating rotation about the rotating shaft 65. Furthermore, the reflector 6 for a wide area
A narrow-range reflecting mirror 66 is provided inside 4. The narrow range reflecting mirror 66 is supported by a pair of upper and lower rotating shafts 67 with respect to the wide range reflecting mirror 64, and is capable of reciprocating rotation about the rotating shaft 67.

According to the optical scanning device 60 shown in FIG. 13, the reciprocating rotation of the inner frame 62 about the rotating shaft 63 causes the reflecting mirrors 64 and 66 for a wide range and a narrow range to be integrated vertically (up and down). Direction). The wide-range and narrow-range reflecting mirrors 64 and 66 individually swing laterally (left and right directions) about the rotating shafts 65 and 67. That is,
Each of the reflecting mirrors 64 and 66 is driven in common for optical scanning in the vertical direction, as in FIG. 11, whereas it is driven separately for optical scanning in the horizontal direction.

By the way, in the configuration of FIG. 13, the narrow-range reflecting mirror 66 is arranged inside the wide-range reflecting mirror 64.
Conversely, the wide-range reflecting mirror 64 may be arranged inside the narrow-range reflecting mirror 66.

By the way, in order to realize the optical scanning device 60 of FIG. 13 as a retinal scanning display device, a configuration in which the two image signals S1 and S2 are mixed to form one light beam and the light beam is irradiated to the optical scanning device 60. Is required. That is,
An optical signal including both the narrow-range image signal S1 and the wide-range image signal S2 must be applied to almost the entire area of the outer reflecting mirror (wide-area reflecting mirror 64). In FIG.
An area indicated by 3 indicates an area to be irradiated with one light beam obtained by mixing the image signals S1 and S2.

Therefore, in this embodiment, the retinal scanning display device is configured as shown in FIG. 14 or FIG. In addition,
Since the display device shown in FIGS. 14 and 15 has the same basic configuration as that described with reference to FIGS.
The same components are denoted by the same reference numerals, and description thereof will be simplified.

Referring to FIG. 14, image signals S1 and S2 issued from light sources 1 and 2 and optical modulators 3 and 4 (not shown).
Are different wavelengths λ1, λ2 depending on the spectroscopes 41 and 42, respectively.
Are divided into image signals S1a and S2a. The image signal S1a having the wavelength λ1 is reflected by the reflecting mirror 43, changes its traveling direction, and then passes through the semi-transparent mirror 44. Also,
The image signal S2a having the wavelength λ2 is reflected by the semi-transparent mirror 44 and changes its traveling direction. As a result, the two image signals S1
The light beams a and S2a are combined into one light beam, and the light beam is irradiated on the optical scanning device 60.

In the optical scanning device 60, the surfaces of the narrow range reflecting mirror 66 and the wide range reflecting mirror 64 are coated with a film (a dichroic film or the like) that reflects only light of different wavelengths. That is, when one light beam in which the two image signals S1a and S2a are mixed is irradiated, the narrow range reflecting mirror 66 reflects only the image signal S1a of the wavelength λ1, and the wide range reflecting mirror 64 reflects the image signal S1a of the wavelength λ2. Only the image signal S2a is reflected. In other words, each image signal S1
a, S2a are reflecting mirrors 66, 6 for narrow range and wide range.
4 and are selectively reflected.

On the other hand, in FIG. 15, image signals S1 and S1 issued from light sources 1 and 2 and optical modulators 3 and 4 (not shown) are shown.
S2 is polarized by polarizers (or polarization filters) 45 and 46 into image signals S1b and S2b having different polarization planes. Each of the image signals S1b and S2b is the same as that shown in FIG.
4, the traveling direction is changed via the reflecting mirror 43 and the semi-transmissive mirror 44, and the light is combined into one light beam.
Is irradiated.

In the optical scanning device 60, the surfaces of the narrow range reflecting mirror 66 and the wide range reflecting mirror 64 are coated with films (polarizing mirrors or the like) that reflect only light having different polarization planes. That is, two image signals S1
When one light beam in which b and S2b are mixed is irradiated, the narrow range reflecting mirror 66 reflects only the image signal S1b, and the wide range reflecting mirror 64 reflects only the image signal S2b. In other words, the image signals S1b and S2b are separated by the narrow-range and wide-range reflecting mirrors 66 and 64, respectively, and are selectively reflected.

14 or 15, the retinal scanning display device using the optical scanning device 60 shown in FIG. 13 can simultaneously display a wide viewing angle image and a high definition image with a narrow viewing angle. Becomes Further, since the combined light beam is irradiated to the optical scanning device 60, the size of the display device can be reduced.

Further, in the sixth embodiment, the reflecting mirror 64,
By arranging the inner and outer portions 66 in an integrated manner, the optical scanning device 60 can be made more compact. In particular, since each of the reflecting mirrors 64 and 66 is disposed inside the diameter of the combined light beam, one light beam is reflected by each of the reflecting mirrors 64 and 66, and is appropriately adjusted for each light scanning range. It becomes possible to separate.

(Seventh Embodiment) This embodiment is still another modified example of the fifth embodiment, in which the configuration of the optical scanning device is changed from FIG. 11 to FIG. suggest.

In FIG. 16, the light scanning device 70 is
It has a heavy frame structure, and an inner frame 72 is disposed inside the outer frame 71. Inner frame 72
Is supported by a pair of left and right rotation shafts 73 with respect to the outer frame 71, and is capable of reciprocating rotation about the rotation shaft 73. Inside the inner frame 72, a narrow range reflecting mirror 74 and a wide range reflecting mirror 75 are provided.
These two reflecting mirrors 74 and 75 are supported by a pair of upper and lower rotating shafts 76 and 77 with respect to the inner frame 72, respectively, and are capable of reciprocating rotation about the rotating shafts 76 and 77.

According to the configuration shown in FIG. 16, when the inner frame 72 reciprocates around the rotation shaft 73, the reflecting mirrors 74 and 75 for the narrow range and the wide range are integrally formed in the vertical direction (vertical direction). Rocks. Further, the narrow-range and wide-range reflecting mirrors 74 and 75 individually swing in the lateral direction (left and right directions) around the rotating shafts 76 and 77. That is, each of the reflecting mirrors 74 and 75 is commonly driven for vertical optical scanning, as in FIGS. 11 and 13, but is separately driven for horizontal optical scanning.

By the way, in order to realize the optical scanning device 70 of FIG. 16 as a retinal scanning display device, a configuration in which the two image signals S1 and S2 are mixed to form one light beam, and the light beam is irradiated to the optical scanning device 70. Is required. That is,
Optical signals including both the narrow range image signal S1 and the wide range image signal S2 are reflected by the narrow range and wide range reflecting mirrors 74 and 75.
Must be irradiated to almost the entire area of the vehicle. In FIG. 16, an area indicated by reference numeral A4 is a 1 where the image signals S1 and S2 are mixed.
2 shows an area to be irradiated with two light beams.

Therefore, in this embodiment, the retinal scanning display device is configured as shown in FIG. 17 or FIG. In addition,
The display device shown in FIGS. 17 and 18 has the same basic configuration as that described with reference to FIGS.
The same components are denoted by the same reference numerals, and description thereof will be simplified.

In FIG. 17, image signals S1 and S2 issued from light sources 1 and 2 and optical modulators 3 and 4 (not shown).
Are different wavelengths λ1, λ2 depending on the spectroscopes 41 and 42, respectively.
Are divided into image signals S1a and S2a. Further, as described above, the image signals S1a and S2b change the traveling direction via the reflecting mirror 43 and the semi-transmissive mirror 44, are combined into one light beam, and then are irradiated on the optical scanning device 70.

In the optical scanning device 70, the surfaces of the narrow range reflecting mirror 74 and the wide range reflecting mirror 75 are coated with a film (a dichroic film or the like) that reflects only light of different wavelengths. That is, when one light beam in which the two image signals S1a and S2a are mixed is irradiated, the narrow range reflecting mirror 74 reflects only the image signal S1a having the wavelength λ1, and the wide range reflecting mirror 75 reflects the image signal S1a having the wavelength λ2. Only the image signal S2a is reflected. In other words, each image signal S1
a, S2a are reflecting mirrors 74, 7 for a narrow range and a wide range.
5 and are selectively reflected.

On the other hand, in FIG. 18, image signals S1, S1 issued from light sources 1, 2 and light modulators 3, 4 (not shown) are shown.
S2 is polarized by polarizers (or polarization filters) 45 and 46 into image signals S1b and S2b having different polarization planes. Each of the image signals S1b and S2b is the same as that shown in FIG.
7 and the like, the traveling direction is changed via the reflecting mirror 43 and the semi-transmissive mirror 44 to be combined into one light beam.
It is irradiated to 0.

In the optical scanning device 70, the surfaces of the narrow range reflecting mirror 74 and the wide range reflecting mirror 75 are coated with a film (polarizing mirror or the like) that reflects only light having different polarization planes. That is, two image signals S1
When one light beam in which b and S2b are mixed is irradiated, the narrow range reflecting mirror 74 reflects only the image signal S1b, and the wide range reflecting mirror 75 reflects only the image signal S2b. In other words, the image signals S1b and S2b are separated by the narrow-range and wide-range reflecting mirrors 74 and 75, respectively, and are selectively reflected.

17 or 18, the retinal scanning display device using the optical scanning device 70 shown in FIG. 16 can simultaneously display a wide viewing angle image and a high definition image with a narrow viewing angle. Becomes In addition, since the combined light beam is irradiated to the optical scanning device 70, the size of the display device can be reduced.

(Eighth Embodiment) The present embodiment proposes a configuration relating to the positional relationship between the user's eyeball and the optical scanning device, and its outline is shown in FIG. In FIG. 19, a spheroid 81 is placed in front of the eyeball E, and an inner surface of the spheroid 81 forms a reflection surface (projection surface) of an image. In this case, in the present display device, positioning is performed such that the positions of the crystalline lens C of the eyeball E and the optical scanning device 80 become two focal points of the spheroid 81.

According to this configuration, the optical signal emitted from the optical scanning device 80 is reflected by the projection surface, always passes through the crystalline lens C of the eyeball E, is converged there, and is projected onto the retina R. An image can be drawn on the retina R.
Note that, as the optical scanning device 80, any of the optical scanning devices 5, 50, 60, and 70 in each of the above-described embodiments can be applied.

(Ninth Embodiment) In each of the above-described embodiments, the reflecting mirror for narrow range and the reflecting mirror for wide range are integrated in the optical scanning device, and the deflection angle (optical scanning angle) of each reflecting mirror is set. Is changed to present a high-resolution image in a narrow range and a low-resolution image in a wide range. In the present embodiment, this configuration is changed. That is, in the retinal scanning display device according to the present embodiment, the wide-range reflecting mirror is disposed rearward of the eyeball, and the narrow-range reflecting mirror is disposed forward of the eyeball. Combine optics to limit This proposes to present a high-resolution image in a narrow range in addition to a wide-range low-resolution image. In the apparatus of the present embodiment, unlike the above-described embodiments, it is not always necessary to change the deflection angle (optical scanning angle) of each of the narrow range reflecting mirror and the wide range reflecting mirror.

FIG. 2 shows a desirable configuration according to this embodiment.
This will be described with reference to the schematic diagram shown in FIG. FIG. 20 is a schematic view of a main part of the display device viewed from above or from the side,
Only the main parts are extracted and shown.

In FIG. 20, the wide-area reflecting mirror 91 is
It is reciprocally rotatable in the vertical and horizontal directions (up and down and left and right directions) by a support shaft (not shown), swings within the range of the deflection angle θ11 in either the vertical or horizontal direction, and optically scans the wide-range image signal S11. Further, a narrow range reflecting mirror 92 is provided at a position closer to the eyeball E than the wide range reflecting mirror 91. Similarly, the narrow range reflecting mirror 92 is also vertically and horizontally (up and down and left and right) by a support shaft (not shown). Direction), and swings within the range of the deflection angle θ12 in either the vertical or horizontal direction, and optically scans the narrow-range image signal S12.
As an example, it is assumed that the shake angles θ11 and θ12 are the same (θ11 = θ12).

The main optical system 93 composed of a convex lens is for efficiently guiding the reflected light from the wide-range reflecting mirror 91 and the narrow-range reflecting mirror 92 to the eyeball E. A sub optical system 94 composed of a convex lens is disposed on the near side. The sub optical system 94 plays a role of narrowing the scanning angle of the reflected light from the narrow range reflecting mirror 92 (the incident angle to the main optical system 93). Here, the wide-area reflecting mirror 9
1. Narrow range reflecting mirror 92, main optical system 93, and sub optical system 9
4 are arranged on the same axis.

In this case, the deflection angles θ11 and θ12 of the wide-range and narrow-range reflecting mirrors 91 and 92 are the same, but the reflected light from the narrow-range reflecting mirror 92 has a light scanning angle through the sub optical system 94. Since the main optical system 93 is irradiated after being narrowed, an image signal in a narrow visual field range is presented to the eyeball E by the reflected light.

The reflected light from the wide-range reflecting mirror 91 (wide-range image signal S11) is irradiated onto the eyeball E through the main optical system 93, while the reflected light from the narrow-range reflecting mirror 92 (narrow-range image signal S12). ) Is radiated to the eyeball E through the sub optical system 94 and the main optical system 93. At this time, if the light reflected by the wide-range reflecting mirror 91 tries to pass through the sub optical system 94, the image signal S11 is unexpected. It is bent in the direction, and does not converge on the eyeball E where it should originally converge. Therefore, in the apparatus of the present embodiment, a configuration for blocking the wide-range image signal S11 that is going to pass through the sub optical system 94 is proposed. One example is described below.

That is, image signals of different wavelengths are given as the image signals S11 and S12 for the wide range and the narrow range, and the sub optical system 94 is configured to be able to transmit only a signal of a specific wavelength. Thereby, the narrow-range image signal S1
2 can pass through the sub optical system 94, and the wide-range image signal S
No. 11 cannot pass through the sub optical system 94.

As another method, image signals having different polarization planes are provided as the image signals S11 and S12 for the wide range and the narrow range, and the sub optical system 94 transmits only the signal having the specific polarization plane. A configuration is possible. Thus, again, only the narrow range image signal S12 is output from the sub optical system 94.
, And the wide-range image signal S11 cannot pass through the sub optical system 94.

In short, according to the display device shown in FIG. 20, the wide-range image signal S11 is reflected by the wide-range reflecting mirror 91, and then is emitted to the eyeball E via the main optical system 93. Thereby, a wide-range image with low resolution is perceived by the retina R. At the same time, the narrow range image signal S12
Is reflected by the narrow range reflecting mirror 92, and then is radiated to the eyeball E via the sub optical system 94 and the main optical system 93. Thereby, a high-resolution narrow-range image is perceived by the retina R. At this time, a low-resolution image is radiated to the periphery of the field of view by the wide-range reflector 91, and a high-resolution image is radiated to the center of the field of view by the narrow-range reflector 92.

As described above, according to the display device having the schematic configuration of FIG. 20, as in the above-described embodiments, the user can simultaneously perceive a wide-area image and a high-definition narrow-range image that provide high realism. be able to. In addition, since a high-resolution image (high-definition image) is presented only in a limited narrow area, an inconvenience such as an increase in the amount of image information accompanying presentation of a high-definition image is eliminated. As a result, good image processing can be performed while suppressing an increase in the amount of image information.

In this case, the reflecting mirrors 91 and 92 for the wide range and the narrow range have the same deflection angles θ11 and θ12. Therefore, when driving the reflecting mirrors 91 and 92, the same optical scanning driver is shared. And the configuration can be simplified.

Further, since the wide-area reflecting mirror 91, the narrow-area reflecting mirror 92, the main optical system 93, and the sub-optical system 94 are arranged on the same axis, simplification and downsizing of the configuration of the present display device can be realized. it can. However, the deflection angles θ11, θ1
2 is the same or each component is disposed on the same axis as described above, which is not necessarily a requirement of the present display device, and can be embodied in a different configuration.

Further, since the characteristics of the image signals S11 and S12 are respectively changed and only specific signals are selectively transmitted by the sub-optical system 94, the wide-range image signal S11
As a result, the transmission of the sub optical system 94 is blocked, and the disadvantage that the image is blurred can be avoided.

In the display device according to the ninth embodiment, a line-of-sight tracking function may be added in which the line-of-sight direction of the user is detected and the narrow-range reflecting mirror 92 is interlocked with the line-of-sight direction. In this case, the narrow-range reflecting mirror 92 and the sub optical system 94 are integrated into a unit, and the integrated unit is made to follow the line of sight. That is, based on the detection result of the line-of-sight detecting means (line-of-sight detection sensor), the narrow range reflecting mirror 9 is used.
2 so that the high-definition image (narrow range image) presented by 2 always exists in the center of the user's field of view.
And the movement of the sub optical system 94 is feedback-controlled. However, at this time, since the display position of the narrow range image in the entire visual field region is changed, the narrow range image signal S12 may be generated while corresponding to the display position of the narrow range image.

In the display apparatus shown in FIG. 20, image signals having different wavelengths or image signals having different polarization planes are given as the wide-range and narrow-range image signals S11 and S12, whereby the subordinate image signal S11 is provided. Although the transmission of the optical system 94 is blocked, the configuration is changed as follows. FIG. 21 is a display device showing a modification of FIG.

The display device of FIG. 21 differs from that of FIG. 20 in that a shielding plate 95 is disposed between a wide-range reflecting mirror 91 and a narrow-range reflecting mirror 92, and the shielding plate 95 provides a wide-range reflecting plate. The reflected light from the mirror 91 is blocked. In the present configuration, similarly to the configuration of FIG.
11, the transmission of the sub optical system 94 is blocked, and as a result, the inconvenience that the wide-range image signal S11 does not converge on the eyeball E (specifically, the crystalline lens C) and the image is blurred can be avoided.

(Tenth Embodiment) The retinal scanning display device according to the present embodiment is provided with a main optical system and a sub-optical system having different curvatures. We propose to present a high-resolution image of a small area to the retina. In the apparatus according to the present embodiment, similarly to the ninth embodiment, it is not always necessary to change the deflection angle (optical scanning angle) of each of the narrow range reflecting mirror and the wide range reflecting mirror.

FIG. 2 shows a preferred configuration according to this embodiment.
This will be described with reference to the schematic diagram shown in FIG. However, in FIG. 22, the same parts as those in FIG. 20 are denoted by the same reference numerals, and detailed description thereof will be omitted.

In FIG. 22, a main optical system 96 composed of a convex lens is for efficiently guiding the reflected light from the wide-range reflecting mirror 91 to the eyeball E, and a sub optical system 97 composed of a convex lens is provided at the center thereof. Are integrated.
The sub optical system 97 is a lens having a curvature different from that of the main optical system 96, and transmits reflected light from the narrow range reflecting mirror 92 disposed closer to the wide range reflecting mirror 91 than the lens C of the eyeball E.
Has the role of converging. That is, the wide-area reflecting mirror 91
Is reflected by the main optical system 96 at the crystalline lens C of the eyeball E, whereas the reflected light from the narrow range reflecting mirror 92 is similarly focused at the crystalline lens C by the sub optical system 97.

In this case, the deflection angles θ11 and θ12 of the wide-range and narrow-range reflecting mirrors 91 and 92 are the same, but the reflected light from the narrow-range reflecting mirror 92 causes a narrow field-of-view range with respect to the eyeball E. An image signal is presented.

Also in the display device of FIG. 22, the wide-range image signal S11 passing through the sub-optical system 97 is prevented in order to prevent the disadvantage that the image is blurred when the wide-range image signal S11 passes through the sub-optical system 97. The following configuration for blocking S11 is proposed.

That is, image signals of different wavelengths are given as the image signals S11 and S12 for the wide range and the narrow range, and the sub optical system 97 is configured to be able to transmit only a signal of a specific wavelength. Thereby, the narrow-range image signal S1
2 can pass through the sub optical system 97 and the wide-range image signal S
No. 11 cannot pass through the sub optical system 97.

As another method, image signals having different polarization planes are given as the image signals S11 and S12 for the wide range and the narrow range, and the sub optical system 97 transmits only the signal having the specific polarization plane. A configuration is possible. As a result, again, only the narrow range image signal S12 is
, And the wide-range image signal S11 cannot pass through the sub optical system 97.

In short, according to the display device shown in FIG. 22, the wide-range image signal S11 is reflected by the wide-range reflecting mirror 91, and then radiated to the eyeball E via the main optical system 96. Thereby, a wide-range image with low resolution is perceived by the retina R. At the same time, the narrow range image signal S12
Is reflected by the narrow range reflecting mirror 92, and then is radiated to the eyeball E via the sub optical system 97. Thereby, a high-resolution narrow-range image is perceived by the retina R. At this time, a low-resolution image is radiated to the periphery of the field of view by the wide-range reflector 91, and a high-resolution image is radiated to the center of the field of view by the narrow-range reflector 92.

As described above, according to the display device having the schematic configuration of FIG. 22, as in the above-described embodiments, the user can simultaneously perceive a wide-area image and a high-definition narrow-range image that give a high sense of reality. be able to. In addition, since a high-resolution image (high-definition image) is presented only in a limited narrow area, an inconvenience such as an increase in the amount of image information accompanying presentation of a high-definition image is eliminated. As a result, good image processing can be performed while suppressing an increase in the amount of image information.

Further, in the present embodiment, as in the ninth embodiment, the deflection angles θ11,
Since θ12 is the same, the same optical scanning driver can be shared, and the configuration can be simplified. Since the wide-range reflecting mirror 91, the narrow-range reflecting mirror 92, the main optical system 96, and the sub-optical system 97 are arranged on the same axis, simplification and downsizing of the configuration of the display device can be realized.
Such an effect can also be obtained.

FIG. 2 shows another configuration for blocking transmission of the sub optical system 94 with respect to the wide range image signal S11.
3 is applicable. In the display device of FIG.
The difference from the second embodiment is that a shielding plate 98 is provided between the wide-range reflecting mirror 91 and the narrow-range reflecting mirror 92.
Thereby, the light reflected by the wide-range reflecting mirror 91 is blocked. Also in this configuration, similarly to the configuration of FIG. 22, transmission of the wide-range image signal S11 through the sub optical system 97 is blocked, and as a result, the wide-range image signal S11 does not converge on the eyeball E (specifically, the crystalline lens C). Inconveniences such as blurred images can be avoided.

(Eleventh Embodiment) In the retinal scanning display device according to the present embodiment, a sub optical system is provided between the main optical system and the eyeball, and a high resolution image in a narrow range is formed by the sub optical system. Suggest to present to In the apparatus of the present embodiment, similarly to the ninth and tenth embodiments, it is not always necessary to change the deflection angle (optical scanning angle) of each of the narrow range reflecting mirror and the wide range reflecting mirror.

FIG. 2 shows a desirable configuration according to the present embodiment.
This will be described with reference to the schematic diagram shown in FIG. However, in FIG. 24, the same parts as those in FIG. 20 are denoted by the same reference numerals, and detailed description thereof is omitted.

In FIG. 24, a main optical system 99 composed of a convex lens includes a wide-range reflecting mirror 91 and a narrow-range reflecting mirror 92.
In order to efficiently guide the reflected light to the eyeball E, a sub optical system 100 including a concave lens is disposed between the main optical system 99 and the eyeball E. The sub optical system 100
It plays a role of narrowing the scanning angle (the incident angle to the eyeball E) of the reflected light from the narrow range reflecting mirror 92 and converging it on the crystalline lens C.

In this case, the deflection angles θ11 and θ12 of the wide-range and narrow-range reflecting mirrors 91 and 92 are the same, but the reflected light from the narrow-range reflecting mirror 92 causes the eyeball E to be in a narrow visual field range. An image signal is presented.

Also in the display device of FIG. 24, the wide-range image signal S11 passing through the sub-optical system 100 is prevented in order to prevent the disadvantage that the image is blurred when the wide-range image signal S11 passes through the sub-optical system 100. The following configuration for blocking S11 is proposed.

That is, image signals of different wavelengths are given as the image signals S11 and S12 for the wide range and the narrow range, and the sub optical system 100 is configured to be able to transmit only the signal of the specific wavelength. Thereby, the narrow range image signal S
Only 12 can pass through the sub optical system 100, and the wide range image signal S11 cannot pass through the sub optical system 100.

As another method, image signals having different polarization planes are given as the image signals S11 and S12 for the wide range and the narrow range, and the sub optical system 100 transmits only the signal having the specific polarization plane. A configuration is possible. As a result, again, only the narrow range image signal S12 is
00 and the wide-range image signal S11
00 cannot be transmitted.

In short, according to the display device shown in FIG. 24, the wide-range image signal S11 is reflected by the wide-range reflecting mirror 91 and then radiated to the eye E through the main optical system 99. Thereby, a wide-range image with low resolution is perceived by the retina R. At the same time, the narrow range image signal S12
Is reflected by the narrow range reflecting mirror 92, and then is radiated to the eyeball E via the main optical system 99 and the sub optical system 100. Thereby, a high-resolution narrow-range image is perceived by the retina R.
At this time, a low-resolution image is radiated to the periphery of the field of view by the wide-range reflector 91, and a high-resolution image is radiated to the center of the field of view by the narrow-range reflector 92.

As described above, according to the display device having the schematic configuration of FIG. 24, as in the above-described embodiments, the user can simultaneously perceive a wide-area image and a high-definition narrow-area image that provide a high sense of reality. be able to. In addition, since a high-resolution image (high-definition image) is presented only in a limited narrow area, an inconvenience such as an increase in the amount of image information accompanying presentation of a high-definition image is eliminated. As a result, good image processing can be performed while suppressing an increase in the amount of image information.

In this embodiment, the ninth and tenth embodiments are described.
As in the first embodiment, since the deflection angles θ11 and θ12 of the reflecting mirrors 91 and 92 are the same, the same optical scanning driver can be shared, and the configuration can be simplified.・
Wide-area reflecting mirror 91, narrow-area reflecting mirror 92, main optical system 9
9 and the sub optical system 100 are arranged on the same axis,
The present display device can be simplified and downsized. Such an effect can also be obtained.

FIG. 25 can be applied as another configuration for preventing the transmission of the sub-optical system 100 with respect to the wide-range image signal S11. 25 is different from FIG. 24 in that a shielding plate 101 is provided between a wide-range reflecting mirror 91 and a narrow-range reflecting mirror 92. Blocks reflected light.
In this configuration, similarly to the configuration of FIG. 24, the transmission of the wide-range image signal S11 through the sub optical system 100 is blocked, and as a result, the wide-range image signal S11 does not converge on the eyeball E (specifically, the crystalline lens C). Inconveniences such as blurred images can be avoided.

The present invention can be embodied in the following modes other than the above. In each of the above embodiments, one reflector for narrow range and one reflector for wide range are prepared as the optical scanning device,
Although the image is two-dimensionally scanned by each of them, three or more reflecting mirrors may be prepared, and the image may be two-dimensionally scanned by them. In such a case, one reflector is similarly prepared as a wide range reflector, and a plurality of reflectors having different light scanning ranges are prepared as a narrow range reflector. Then, for example, the image signal is presented to the retina so as to gradually increase the image resolution from the outside field of view to the center of the field of view. At this time,
If overlapping portions are eliminated in each image signal, the display area in the entire viewing area is divided for each image signal. This allows the user to perceive more detailed image information. In order to realize this apparatus, the number of light sources, optical modulators, optical scanning drivers, and the like are increased according to the number of reflecting mirrors (optical scanning means).

In each of the above embodiments, it has been described that the line-of-sight tracking function is provided only in the light scanning means (reflecting mirror unit) for a narrow range. However, the optical scanning means (reflecting mirror unit) for a wide range is similarly provided. It is also possible to provide a line-of-sight tracking function, drive both optical scanning units in synchronization, and change their directions. In this case, the relative image display area of each of the narrow-range and wide-area optical scanning means does not change, and the microcomputer does not need to change the display position of the narrow-range image in the entire visual field each time. Therefore, the processing load on the microcomputer can be reduced. In short, according to the present invention, when the line-of-sight tracking function is provided, the same function is provided at least in the light scanning means (reflecting mirror unit) for a narrow range, and the same function is provided for the light scanning means (reflecting mirror unit) for a wide range. Whether it is or not may be arbitrary.

In the first to seventh embodiments, the reflecting mirrors for a wide range and a narrow range (for example, the reflecting mirrors 25,
29) is not necessarily limited to the one supported by the support shaft and reciprocatingly rotating (swinging), and may be one that linearly reciprocates within a predetermined moving range. In any case, any configuration is possible as long as each of the reflecting mirrors can perform light scanning in a wide range and light scanning in a narrow range.

In the first to seventh embodiments, the deflection angle of the narrow-range reflecting mirror (for example, the reflecting mirror 25 in FIG. 2) can be changed continuously or stepwise so that the light of the narrow-range image can be changed. The scanning range (display area on the eyeball) can be changed arbitrarily. The change of the deflection angle may be realized by mode setting by the user, automatic switching by the microcomputer 11, or the like. This makes it possible to set a suitable optical scanning range in each case according to various factors such as the type and use of an image, thereby satisfying the user's detailed requirements.

In the ninth and eleventh embodiments, the narrow-range reflecting mirror (the reflecting mirror 9 shown in FIGS. 20 and 24) is used.
The position 2) is continuously or stepwise variable in the front-rear direction toward the eyeball, whereby the light scanning range (display area on the eyeball) of the narrow range image can be arbitrarily changed. However, in the display device of FIG. 20, the position of the narrow-range reflecting mirror 92 and the sub optical system 94 are changed integrally. For example, when the narrow-range reflector is closer to the eyeball, the display area of the narrow-range image is smaller, and when the narrow-range reflector is farther from the eyeball, the display area of the narrow-range image is larger. The position change of the reflecting mirror may be realized by mode setting by the user, automatic switching by the microcomputer 11, or the like. With this, depending on various factors such as the type and use of the image,
An appropriate optical scanning range can be set each time, and it is possible to satisfy the user's detailed requirements.

In the retinal scanning display device according to the ninth to eleventh embodiments, as described in the eighth embodiment, the positions of the crystalline lens of the eyeball and the optical scanning means are two focal points. The projection plane of the image may be formed by a spheroid (see FIG. 19). In the present display device, it is possible to draw an image on the retina most efficiently.

The retinal scanning display device embodying the present invention includes at least a plurality of optical scanning means having different optical scanning ranges, and a plurality of optical scanning means for optically scanning images having different resolutions. Any configuration that realizes any of the above configurations can be used. As a result, a plurality of types of images having different resolutions (image quality) and optical scanning ranges can be simultaneously presented to the user's eyeball, and the present invention can perform good image processing while suppressing an increase in the amount of image information. Is achieved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an outline of a retinal scanning display device according to a first embodiment.

FIG. 2 is a perspective view showing a configuration of a retinal scanning display device according to the first embodiment.

FIG. 3 is a front view showing the configuration of the optical scanning device according to the first embodiment.

FIG. 4 is a plan view showing an outline of an optical scanning device.

FIG. 5 is a perspective view showing a configuration of a retinal scanning display device according to a second embodiment.

FIG. 6 is a front view illustrating a configuration of an optical scanning device according to a second embodiment.

FIG. 7 is a plan view showing an outline of an optical scanning device.

FIG. 8 is a conceptual diagram showing a configuration of a retinal scanning display device according to a third embodiment.

FIG. 9 is a conceptual diagram showing a configuration of a retinal scanning display device according to a fourth embodiment.

FIG. 10 is a perspective view showing a configuration of a retinal scanning display device according to a fifth embodiment.

FIG. 11 is a front view illustrating a configuration of an optical scanning device according to a fifth embodiment.

FIG. 12 is a plan view illustrating an outline of an optical scanning device.

FIG. 13 is a front view illustrating a configuration of an optical scanning device according to a sixth embodiment.

FIG. 14 is a conceptual diagram showing a configuration of a retinal scanning display device according to a sixth embodiment.

FIG. 15 is a conceptual diagram showing a configuration of a retinal scanning display device according to a sixth embodiment.

FIG. 16 is a front view illustrating a configuration of an optical scanning device according to a seventh embodiment.

FIG. 17 is a conceptual diagram showing a configuration of a retinal scanning display device according to a seventh embodiment.

FIG. 18 is a conceptual diagram showing a configuration of a retinal scanning display device according to a seventh embodiment.

FIG. 19 is a diagram schematically illustrating a display device according to an eighth embodiment.

FIG. 20 is a schematic diagram showing a configuration of a display device according to a ninth embodiment.

FIG. 21 is a schematic view showing a configuration of a display device according to a ninth embodiment.

FIG. 22 is a schematic view showing a configuration of a display device according to a tenth embodiment.

FIG. 23 is a schematic view showing a configuration of a display device according to a tenth embodiment.

FIG. 24 is a schematic view showing a configuration of a display device according to an eleventh embodiment.

FIG. 25 is a schematic view showing a configuration of a display device according to an eleventh embodiment.

[Explanation of symbols]

1,2 ... light source, 3,4 ... light modulator, 5,50,60,7
0,80: Optical scanning device, 6: Reflector unit for narrow range,
7 Reflector unit for wide area, 8, 9 Optical scanning driver, 11 Microcomputer, 25, 54, 66, 74, 92
Reflector for narrow range, 29, 55, 65, 75, 91 ... Reflector for wide range, 31 ... Line-of-sight detection sensor, 32 ... Actuator, 41, 42 ... Spectroscope, 43 ... Reflector, 44 ... Semi-transparent mirror, 45 ... 46: polarizer, 81: spheroid, 93, 9
6,99 ... main optical system, 94, 97, 100 ... sub optical system,
95, 98, 101: shielding plate, E: eyeball, C: lens,
R: Retina.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 13/00 H04N 13/00 (72) Inventor Nobuaki Kawahara 1-1-1, Showa-cho, Kariya-shi, Aichi Pref. F-term in DENSO Corporation (reference) 2H045 AB02 AB43 BA12 BA22 BA32 DA14 DA31 5C061 AA06 AA29 AB02 AB10 5C080 AA18 BB10 CC02 DD01 DD07 DD22 EE19 FF14 JJ02 JJ06

Claims (28)

[Claims] 1. A retinal scanning display device for recognizing image information in a retina of an eyeball by two-dimensionally scanning visible light, comprising a plurality of optical scanning means having different optical scanning ranges. Display device. 2. A retinal scanning display device for recognizing image information in a retina of an eyeball by two-dimensionally scanning visible light, comprising a plurality of optical scanning means for optically scanning images having different resolutions. Retinal scanning display device. 3. A retinal scanning display device for recognizing image information in a retina of an eyeball by two-dimensionally scanning a visible light beam, and optical scanning for a wide-range image for optically scanning a low-resolution image in a relatively wide range. A retinal scanning display device, comprising: means for optically scanning a high-resolution image in a relatively narrow range. 4. The retinal scanning display device according to claim 3, wherein a low-resolution image is radiated to a peripheral portion of the field of view by a light scanning device for a wide range image, and a central portion of the field of vision is illuminated by a light scanning device for a narrow range image. A retinal scanning display device that emits high-resolution images. 5. The retinal scanning display device according to claim 3, wherein one of the two-dimensional scanning directions performs optical scanning in a narrow range, and the other optical scanning unit for a narrow range image performs wide-range image scanning. Scanning display device that performs optical scanning over the same wide area as the optical scanning means for use. 6. An eye-gaze detecting means for detecting an eye-gaze direction of an eyeball, and an actuator for changing a direction of a narrow-range image light scanning means, and based on the eye-gaze direction detected by the eye-gaze detection means. The retinal scanning display device according to any one of claims 3 to 5, wherein the actuator is driven to move the direction of the light scanning unit for the narrow range image in accordance with the movement of the eyeball. 7. An optical scanning means for a wide-range image and a narrow-range image includes a light reflecting mirror reciprocatingly rotating at a predetermined deflection angle.
The retinal scanning display device according to any one of claims 3 to 6, wherein the deflection angle of the narrow range image light reflecting mirror is smaller than the deflection angle of the wide range image light reflecting mirror. 8. The optical scanning means for a wide-range image and a narrow-range image each includes a light reflecting mirror, and a wide-range image signal and a narrow-range image signal are separately radiated to the corresponding light reflecting mirrors. A retinal scanning display device according to any one of claims 3 to 6. 9. A light reflecting mirror provided on a light-reflecting surface provided on a light scanning means for a wide-area image and a light for a narrow-area image and reflecting only light of a specific different wavelength on a reflecting surface; Means for separating each image signal for use into a wavelength corresponding to the coating applied to the reflection surface of the light reflecting mirror; and combining each image signal after spectral separation by the light separating means into one luminous flux. Signal synthesizing means for supplying to the light reflecting mirror of
The retinal scanning display device according to any one of claims 3 to 6, further comprising: 10. A light reflecting mirror provided on a light scanning means for a wide area image and a light for a narrow area image, each of which is provided with a coating for reflecting light of a specific polarization plane only, Polarizing means for polarizing each image signal for the range into an optical signal having a polarization plane corresponding to the coating applied to the reflection surface of the light reflecting mirror; and a light flux for each image signal after being polarized by the polarization means. Signal synthesizing means for synthesizing and supplying the respective light reflecting mirrors,
The retinal scanning display device according to any one of claims 3 to 6, further comprising: 11. A retinal scanning display device according to claim 9, wherein each of said light reflecting mirrors is arranged inside a diameter of one light beam synthesized by said signal synthesizing means. apparatus. 12. The retinal scanning display device according to claim 3, wherein the optical scanning means for the narrow range image has a variable optical scanning range. 13. A retinal scanning display device according to claim 3 or 4, wherein said light reflecting mirror is provided in each of optical scanning means for a wide-range image and a narrow-range image, and reciprocates at a predetermined swing angle. A main optical system for guiding the light signal reflected by each light reflecting mirror to the eyeball; and a light arranged toward the eyeball before the main optical system and irradiated from the light reflecting mirror for a narrow range image. A retinal scanning display device comprising: a sub-optical system for narrowing an optical scanning angle of a signal. 14. A retinal scanning display device according to claim 3, wherein a light reflecting mirror is provided in each of the optical scanning means for a wide-range image and a narrow-range image, and rotates reciprocally at a predetermined deflection angle. The main optical system for guiding the optical signal reflected by the image light reflecting mirror to the eyeball and the curvature for converging the optical signal are different from the main optical system, and are reflected by the light reflecting mirror for a narrow range image. A retinal scanning display device, comprising: 15. The retinal scanning display device according to claim 14, wherein a sub optical system is provided as a part of the main optical system. 16. A retinal scanning display device according to claim 3, wherein said light reflecting mirror is provided in each of optical scanning means for a wide-range image and a narrow-range image, and rotates reciprocally at a predetermined swing angle. A main optical system for guiding the optical signal reflected by each light reflecting mirror to the eyeball, and an optical signal disposed between the main optical system and the eyeball, which is irradiated from the light reflecting mirror for a narrow range image. A retinal scanning display device comprising: a sub-optical system for converging with an eyeball. 17. The retinal scanning display device according to claim 13, wherein optical signals having different wavelengths or polarization planes are provided as image signals for a wide range and a narrow range, respectively, and the sub-optical system is specified. Retinal scanning display device that transmits only image signals having wavelengths or polarization planes. 18. The retinal scanning display device according to claim 13, wherein a light reflecting mirror for a wide area image is provided between a light reflecting mirror for a wide area image and a light reflecting mirror for a narrow area image. A retinal scanning display device provided with a shielding member for shielding light reflected by the retinal scanning device. 19. The retinal scanning display device according to claim 13, wherein the light reflecting mirrors for the wide area image and the narrow area image have the same deflection angle. 20. The retinal scanning display device according to claim 13, wherein the position of the light reflector for the narrow range image is variable in the front-back direction toward the eyeball. 21. The retinal scanning display device according to claim 13, wherein a light reflecting mirror for a wide range image, a light reflecting mirror for a narrow range image, a main optical system, and a sub optical system are coaxial. A retinal scanning display device arranged on a line. 22. The position of the lens of the eyeball and the optical scanning means being 2
22. The retinal scanning display device according to claim 1, wherein a projection surface of an image is formed by a spheroid serving as one focal point. 23. An optical scanning device for realizing a retinal scanning display device according to any one of claims 3 to 6, wherein the optical scanning means for a wide area image and the narrow area image are each a light reflecting mirror. An optical scanning device in which each of the light reflecting mirrors is independently driven in a two-dimensional scanning direction. 24. An optical scanning device for realizing a retinal scanning display device according to any one of claims 3 to 6, wherein the optical scanning means for a wide-range image and the narrow-range image are each a light reflecting mirror. An optical scanning device in which one of the light reflecting mirrors is driven in common in each of the two-dimensional scanning directions and the other is driven separately. 25. The optical scanning device according to claim 24, wherein one of the light reflecting mirrors for a wide area image or a narrow area image is formed in a frame shape, and the other light reflecting mirror is disposed inside the frame. Optical scanning device. 26. The optical scanning device according to claim 23, wherein each of the optical scanning means for a wide-range image and the narrow-range image is provided with a coating that reflects only light having a specific different wavelength. An optical scanning device including a light reflecting mirror provided on a reflecting surface. 27. The optical scanning device according to claim 23, wherein the coating is provided on the optical scanning means for a wide-range image and a narrow-range image, respectively, and reflects only light of a specific different polarization plane. An optical scanning device comprising a light reflecting mirror provided on a reflecting surface. 28. The optical scanning device according to claim 23, wherein the optical scanning device for a wide-range image and the optical scanning device for a narrow-range image are integrated.