JPH09185009A - Spectacles display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spectacles display which is made small-sized until no feeling of wearing is given by providing image display means which project display images on spectacle lenses at specific parts of spectacles. SOLUTION: Spectacle glass 57a is fitted in a spectacle frame 7 which has a pad 8, and the spectacle glass 57a is provided with a liquid crystal panel 59 as an image information source and a hologram 58 which makes a person who wears the spectacles view an image by receiving the image displayed on the liquid crystal panel 59. The liquid crystal panel 59 is irradiated by a back light from behind. When the power source is turned off, the projection of the display image of specific wavelength from the liquid crystal panel 59 stops, so only information of the outside world is recognized with the eye. To see only the display image, on the other hand, an electrochromic film provided between the hologram 58 and the outside world is applied with a voltage by a sandwiched transparent electrode to color the film in a dark color such as black.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spectacles display, and more particularly to a spectacles display capable of visually recognizing a displayed image and the outside world simultaneously through a spectacle lens.

[0002]

2. Description of the Related Art As an image display device that can be worn by humans,
For example, there is a head mounted display (HMD). FIG. 19 shows a conventional HMD described in JP-A-4-34512. This HMD has a liquid crystal panel 101, a backlight light source 103, a concave lens 104a, and a convex lens 104b housed in a case 110 attached to a helmet 107, and a mirror 105 is fixed to the case 110. The liquid crystal panel 101 is a CRT (not shown) via a signal line 102.
Etc. are connected.

In the above structure, when image data is supplied from the CRT to the liquid crystal panel 101 via the signal line 102, the display image on the liquid crystal panel 101 receiving the backlight from the light source 103 is enlarged by the concave lens 104a and the convex lens 104b. And becomes a light beam 108, which is reflected by the mirror 105 and then becomes a light beam 106 and enters the eye 111. Therefore, the eye 111 can visually recognize the display image of the liquid crystal panel 101 as the virtual image 109 at a position 2 m ahead, for example. If the mirror 105 is a half mirror, the display image and the outside world can be viewed at the same time by see-through.

HMDs of this type include those that display altitude, speed, etc. as aircraft information, and those that display movies, video games, etc. as personal theater.
"Image Lab, No. 1, 60 (1995)", "Optical Technology Contact, Vol. 33, No. 1, 5 (199)
5) "," Optical Technology Contact, Vol.33, No.
1, 25 (1995) ", U.S. Pat. No. 4,902,08
No. 3 etc. Especially US Pat. No. 4,902,
The HMD described in No. 083 and the like is downsized and lightweight. However, most conventional HMDs have 2
It has a weight of about kg, which is not convenient for carrying.

FIGS. 20 (a) to 20 (c) show "3 in July 1995".
Shows an HMD presented at "3D Image Conference".
The HMD shown in FIG. 20 (a) has the first and second reflecting surfaces 11
The liquid crystal panel 101 is provided on the top surface of the free-form curved surface prism 112 having 3, 114.
The image displayed on the first and second reflection surfaces 113, 1
14 is reflected and it injects into the eye 111. As shown in FIG. 20 (b), the second reflecting surface 114 of the free-form surface prism 112 is
When is a half mirror, it becomes see-through and the displayed image and the outside world can be viewed at the same time. But the luminous flux 1
16 faces upwards. FIG. 20 (c) shows an HMD in which this inconvenience is eliminated. The free-form surface prism 112 shown in FIGS.
17 are combined. As shown by the light beams 118a and 118b, a see-through HMD can be realized, which enables weight reduction and downsizing, and can be worn even on eyeglasses, for example.

[0006]

However, the conventional HMD
According to the above, since the image display surface is located away from the eyes in each case, an entrance pupil of a certain size is required, which limits the miniaturization and eliminates the feeling of attachment of foreign matter. I can't.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a megameme display which is miniaturized so as not to give a feeling of wearing at all.

[0008]

In order to achieve the above-mentioned object, the present invention is an image display means which is provided in a predetermined portion of eyeglasses such as eyeglass lenses and eyeglass frames and emits a display image toward the eyeglass lenses. And a see-through means for simultaneously visually recognizing the displayed image and the outside world through the eyeglass lens.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an eyeglass display according to a first embodiment of the present invention, in which eyeglass frame 57 having a pad 8 is fitted with eyeglass glass 57a, and eyeglass glass 57a is provided with image information. A liquid crystal panel 59 as a source and a hologram 58 as a see-through means for receiving an image displayed on the liquid crystal panel 59 and making the image visible to a person wearing glasses are provided.
Although the liquid crystal panel 59 is illuminated by a backlight from the back side, it is omitted in the drawing. E is another source of image information
L-displays, plasma displays or displays with micro-movable colors made by micromachine technology are conceivable. Further, a laser display in which a laser beam is deflected by an AO deflector is promising. Although not shown between the hologram 58 and the outside world, WO ₃ , Al ₂ O ₃ , CrO ₃ , Ta ₂ O ₅ , and ZrO ₂ exhibiting electrochromic properties are not shown.
Etc. are provided in the state of a dielectric thin film or a solid electrolyte, and this film is sandwiched by transparent electrodes (not shown). This electrochromic element becomes transparent and has a color when a voltage is applied. The liquid crystal panel 59 and the hologram 58 are also provided on the spectacle glass 57b, but they are omitted in the drawing. In addition, the voice of the wearer is input to an appropriate position of the eyeglass frame 7, and
A voice input / output device for outputting the recorded voice is provided.

FIG. 2 shows the glasses display shown in FIG.
In detail, the light of the display image from the liquid crystal panel 59 is shown.
The bundle is θ from the X axis₀= 13 degrees (103 degrees from Z axis)
After that, it is bent in the + Z axis direction by the hologram 58 and enters the eye.
At this time, the display image is displayed at a predetermined position in the -Z direction.
Can form a virtual image of. As mentioned above, Mega
From the center of the liquid crystal panel 59 inside the lens 57a
Angle θ between the direction to the center of the ram 58 and the X axis₀Is
Assume 13 degrees. As shown,₁+ L _Two= 25
mm, the distance l between the center of the liquid crystal panel 59 and the X axis
_FourIs 5.8 mm. From the numerical relationship in the figure, θ₁, Θ
_TwoAre 10.9 degrees and 16.2 degrees, respectively. This
Therefore, the opening angle α becomes 5.3 degrees. Center of liquid crystal panel 59
From the center of the hologram 58 to 25.7 mm,
The size of the liquid crystal panel 59 is 4 mm square as described later.
Therefore, the angle of view φ is about 9 degrees. Therefore, the hologram
If 58 has a lens function, paraxial rays cannot be handled.
Wear.

FIG. 3 shows a method of manufacturing the hologram 58.
It is formed on the photographic dry plate 26 using convergent waves and divergent waves. The beam emitted from the laser 15 is bent by a mirror 16 and then split into two beams by a half mirror 17. One beam 18 is bent by a mirror 19 and then converted into a divergent wave by a magnifying lens 20. After the beam diameter is expanded to the size of the aperture of the hologram, it is converted into a plane wave through the collimator lens 21. Beam 18
Moves on the Z axis and is converted into a convergent wave by the lens 22 just before the dry plate 26. Focused wave focal length is 25 mm
And The other beam 23 is bent by the mirror 24 and then travels in the direction of 13 degrees from the X axis. Then, the beam 23 is converted into a diverging wave through the lens 25. The focal length of the diverging wave is 25 mm. Then, the beams 18 and 23 form interference fringes on the dry plate 26. The interference fringes formed on the dry plate 26 are subjected to a developing process to record a hologram. If the image information source is placed at the position of the focal length of the divergent wave with respect to this hologram, and the distance between the eye and the glasses is set to that focal length (same as the focal length of the convergent wave) or less, the same function as a magnifying glass Can have. Therefore, in the light flux emitted from the image information source, only the first-order diffracted light is guided to the direction of the eye through the hologram, and the virtual image of the display image can be seen at the distance of clear vision (= -250 mm) in the -Z axis direction. Here, the method of producing a hologram with a convergent wave and a divergent wave is described, but it is also possible to produce with a plane wave and a divergent wave.

FIG. 4 is a view in which the hologram manufacturing method described with reference to FIG. 3 is applied to a spectacle lens 57a. The spectacle lens 57a is covered with a photosensitive material 52 at the position of the dry plate 26 in FIG. The hologram 58 of FIGS. 1 and 2 is formed above.

In FIG. 5, a transparent protective film 56 is formed on the hologram 58 and the spectacle lens 5 to protect the hologram 58.
7a, and thereafter, the liquid crystal panel 59 is formed.
Is closely attached to the spectacle lens 57a on the end face, and then is assembled into the spectacle frame 7. At this time, the end surfaces of the liquid crystal panel 59 and the spectacle lens 57a may be filled with a liquid having a predetermined refractive index. In this way, the light flux of the display image emitted from the liquid crystal panel 59 can reach the hologram 58 without being affected by the end surface of the spectacle lens 57a.

FIG. 6 examines the relationship between the visibility of the outside world and the lattice spacing of the interference fringes of the hologram 58.

When the recording medium forms a volume hologram, the spacing d of the interference fringes and the spatial frequency f _s measured at right angles to the interference fringe plane are

[Equation 1] Becomes

He—Ne having a wavelength of 632.8 nm
When a laser is used, when the coordinate system is set as shown in FIG. 6, θ _R = 103 ° and sin θ _O = 0 °. As a result, d _R in the x direction is 0.539 μm and the spatial frequency f is 2
It becomes 424 line / mm.

As described above, since the human does not have the resolution enough to distinguish the interference fringes on the glasses, the image information of the outside world can be sufficiently visually recognized. Also, the hologram 58
The resolution of the photosensitive material 52 required to record
Line / mm or more is desirable. A laser is desirable as the light source used for this recording because it requires high coherence, but it is not necessarily coherent light, and a monochromatic light source such as a mercury lamp or a xenon lamp is used. May be. Further, there is a silver salt photographic dry plate as a light-sensitive material for recording a hologram used. Others, dichromated gelatin, photoresist materials, photopolymers, photochromic materials, photodichromic materials, plastic materials such as thermoplastics, ferroelectric materials, magneto-optical materials, electro-optical materials, amorphous semiconductors, photorefractive Materials, etc. can be used. Also, hologram recording may be static or dynamic. That is, by the electro-optic effect,
The refractive index pattern may be formed by applying a voltage to an electrode pattern prepared based on CGH (holographic interference fringes prepared by computer) in advance.

The case of the see-through function glasses display has been described above. On the other hand, the case of observing only the outside world with this glasses display will be described. When the power is turned off, the emission of the display image by the specific wavelength from the liquid crystal panel 59 is stopped. For this reason, even if the screen of the liquid crystal panel 59 is colored, the emitted light is directed in the direction of the 0th order diffraction, and therefore the eye recognizes only the external information.

On the other hand, when only the display image is viewed, by applying a voltage with a transparent electrode sandwiched between the electrochromic film provided between the hologram 58 and the outside world, the film is made black or the like. Color it darkly. The driving voltage is 3V, and the power source is built in the glasses.

Next, a detailed description will be given of the examinations and results obtained by the inventor to complete the present invention.

FIG. 7 shows a human being looking at the display 1 of a 15-inch workstation or computer through the spectacle lens 57a. For example, if the resolution is 1024 × 1280 spot, the aspect ratio (x, y) is 4: 5. The distance d from the human eye 2 to the display 1 is 60 cm. The human pupil diameter is 2 to 8 mm. Display 1 size 15
Inches (diagonal 37.5 cm), the vertical is 23.4c
m and the width are 29.3 cm. Assuming that the human pupil diameter is 5 mm, the angle of view φ in the x direction is about 23 degrees and the angle of view θ in the y direction is about 27 degrees.

FIG. 8 shows the center of rotation 4A of the eyeball 4 and the glasses 57.
The relationship with a is shown. The distance d ₁ between the rotation center 4A of the eyeball 4 and the pupil 2 is within the range of 10 to 20 mm. When a person wears glasses, the eyeglass lens 57 moves from the human eye 2
The distance d _{2 to a} is in the range of 8 to 22 mm.
Therefore, _{d 3 = d 1 + d 2} = 18~42mm. Here, the distance d from the human pupil 2 to the spectacle lens 57a
₂ is assumed to be about 15 mm. Assuming that the angle of view φ, θ when a person looks at the workstation is constant, the size of the display 1A (FIG. 7) displayed on the spectacle lens 57a is about 11 mm in length and about 12 mm in width. . In this way, the workstation display 1
Will fit into the area 1A of about 1 cm square in the eyeglass lens 57a. If the display 1 as an image information source is accommodated in the area 1A of the spectacle lens 57a, the entrance pupil 2 for visually recognizing the displayed image can be small. In addition, even if the user wears glasses, he / she can carry it naturally without being aware of it.

FIG. 9 shows glasses corresponding to FIG. The eyeglasses include eyeglass lenses 57a and 57b, a frame 7, a pad 8 and the like. FIG. 10 shows a spectacle lens 57a corresponding to FIG. The optical axis is the Z axis and the vertical direction is the X axis.
For example, the distance l ₆ between the horizontal plane (Z axis) and the upper part of the spectacle lens 57a is about 20 mm. Similarly, the distance l ₅ to the lower portion is 25 mm. The curvature radius r on the front surface of the spectacle lens 57a is 87.2 mm when the Ostwald type is adopted. As a result, the distance l ₇ between the X axis and the spectacle lens 57a in the lower part is 3.7 mm.
The aperture of the hologram 58 is 10 mm (circle with a radius of 5 mm),
The distance ₁₈ from the center of the hologram 58 to the center of the liquid crystal panel 59 is 25 mm, and the size of the liquid crystal panel 59 is 4 mm.
If the angle Θ formed by the X axis and the direction of the center of the hologram 58 from the center of the liquid crystal panel 59 is set to 12.8 degrees, assuming that the thickness of the lens 57a is 4 mm, the angle Θ formed between the center of the liquid crystal panel 59 and the center of the hologram 58 is set to 12.8 degrees. 59 can be incorporated.

On the other hand, the angle between the X axis and the straight line connecting the center of the hologram 58 and the center of the liquid crystal panel 59 is 12.8.
When it is desired to set the liquid crystal panel 59 more than a certain degree, the liquid crystal panel 59 may be incorporated in the pad 8. In any case, the light flux from the liquid crystal panel 59 causes the hologram 58 to have a lens function,
The 0th-order diffracted light travels in the direction of 13 degrees from the X-axis, but the 1st-order diffracted light bends due to the interference fringes of the hologram 58, causing + Z.
Direction, the virtual image can be confirmed in the visible −Z axis direction.

FIG. 11 shows the principle of a magnifying glass (loupe).
The magnifying glass (loupe) uses a convex lens 30 having a focal length f,
The magnified erect virtual image 33 of the small object 32 on the lens side of the front focus F is observed with the eye 4. The distances of the object-side focal point F and the image-side focal point F ′ are f, f ′, and the lens 30.
To the object 32 and the image 33 are s and s', the heights of the object 32 and the image 33 are y and y ', and the distances from the lens 30 and the image 33 to the eye 4 are e and D' (= e-s '). The paraxial imaging relationship of this optical system is expressed by the following equation.

[Equation 2] Now, if the viewing angle of the image 33 is ω ′,

(Equation 3) Becomes On the other hand, when the object 32 is directly observed at a distance D (= 250 mm) of clear vision without using a loupe,

(Equation 4) Therefore, the angular magnification Γ is

(Equation 5) Becomes For example, observe the eye 4 in a natural state without straining. The distance from the lens 30 to the eye 4 is approximately the image side focus F ′. Since the refractive power of the eye 4 is adjusted to infinity, D '=
Substituting −∞, s ′ = − ∞, and D = 250 mm into the formula for the angular magnification Γ,

(Equation 6) Becomes At this time, since s = −f ′, the object 32 corresponds to the case where the object 32 is at the position of the front focus F of the convex lens 30. For example, when f = 25 mm (= f '), the angular magnification Γ is 10 times. It is meaningless to convert this magnification into a vertical magnification immediately. This 10-fold distinction was only 1 mm in the distance of clear vision, but it means that distinction is possible up to 0.1 mm, that is, the resolution is 10-fold. Moreover, even if the distance from the convex lens 30 to the eye 4 is substantially equal to or less than the image-side focus F ′, the virtual image 33 can be similarly observed by the adjusting power of the refractive power of the eye 4.

The spatial frequency f that can be recognized by the eye depends on the brightness, the pupil diameter, and the like. Narrowing your eyes, moving your focus away,
The larger the pupil diameter, the larger the spatial frequency that can be recognized. According to the Optical Technology Handbook (edited by Asakura Shoten, Hiro Kubota et al., Page 744), "the spatial frequency f recognizable by the eye has a peak at 15 lines / mm". According to optics (Science library physics = 9, Kazumi Murata, Science, p. 211), “MTF including vision has a band-pass filter characteristic with a maximum value near 0.05 lines / minute. And the cutoff frequency is about 1 line / minute. ” Distance of clear vision calculated from this (250m
The cut-off frequency f in m) is 14 lines / mm. Therefore, the limit distance that humans can distinguish is 67 μm.
Becomes

Here, the limit dot that can be recognized by humans is 14 spots / mm. Since the angular magnification is 10 times, 14 dots can be recognized with a magnifying glass.
It becomes 0 spot / mm. If the display is VGA
If the standard (spot is 640 × 480), the size of the display, for example, the above-described liquid crystal panel 59 is 4.6 mm × 3.4 mm. At this time the spot is 7μ
If the resolution is about this, the laser may be scanned to display a two-dimensional image.

FIG. 12 (a) shows the state of the wavefront when one point is recorded on the hologram. The hologram 58 is a photograph in which interference fringes generated between a wavefront of light reflected by an object and a plane wave (or light from a point light source) called reference light 36 are recorded. The light emitted from the object point 35 is a concentric circular wavefront, and interferes with the reference light 36 of a plane wave that is obliquely added on the surface of the hologram 58 to form an interference fringe.

FIG. 12B shows reproduction. Hologram 58
The reference light 38 of the same plane wave as the reference light 36 at the time of recording is illuminated. The angle at which the light is diffracted is determined by the distance between the recorded interference fringes. When the directions of these diffracted light rays are examined, it looks as if light is emitted from the position 39 corresponding to the object point 35 at the time of recording. Even if an object with a large area such as a normal subject is decomposed into object points, the same 3
It is reproduced dimensionally. The hologram 58 can be used as a lens by using such an image forming action.

FIGS. 13A and 13B also show the fabrication and reproduction of the hologram 58. In FIG. 13A, a hologram 58 is produced using the divergent spherical wavefront 40 from the point light source 40a as the object light wavefront and the spherical wavefront 41 that converges to one point 41a as the reference light. In FIG. 13B, when the object 43 is placed near the object point light source 43a and the object 43 is illuminated by the monochromatic light 44, the object 4 is placed near the reference light source 45a.
A real image 45 of No. 3 is formed. The image formation relationship at this time can be treated in the same manner as the geometrical optics of the decentered optical system that connects the center of the divergent wave and the center of the hologram.

FIG. 14 shows an eyeglass display according to the second embodiment of the present invention. In this glasses display, the liquid crystal panel 59 is attached to the glasses lenses 57a and 57b in the glasses display of the first embodiment, whereas the liquid crystal panel 5 is attached to the pad 8 of the glasses frame 7.
The configuration is different in that 9 is embedded, and the other configurations are common. The hologram 58 and the liquid crystal panel 59 are covered with a protective film (not shown).

FIG. 15 shows a method of manufacturing the hologram 58, which is common to that of FIG. However, the coated surface of the photosensitive material 52 on the spectacle lens 57a is on the reflection side.

FIG. 16 shows an eyeglass display according to the third embodiment of the present invention. This glasses display includes a laser light source 73 mounted on a glasses lens 57a, a deflector 72 that uses an acousto-optic (AO) element, a reflection mirror 75 that uses one surface of the glasses lens 57a, and a fluorescent screen that displays an image by receiving a laser beam. (Or a simple screen) 74 and a hologram 58. These elements may be similarly attached to the other spectacle lens (not shown). The optical path length from the laser light source 73 to the fluorescent screen 74 is about 12 cm.
Therefore, when TeO ₂ is used as the deflector 72, a deflection angle of 2 degrees is obtained, and the number of resolution points becomes 1600. When the deflector 72 is two-dimensional, the fluorescent screen 74 is 41 m long.
The size is mx 41 mm, and the resolution is 1600 x 16
00.

In the above configuration, when a laser beam modulated according to an image signal is emitted from the laser light source 73, the laser beam is deflected by the acoustic energy generated according to the control voltage applied to the deflector 72 and reflected. The fluorescent screen 74 is scanned by being reflected by the mirror 75. As a result, an image is displayed on the fluorescent screen 74. The light flux of the display image on the fluorescent screen 74 is received by the hologram 58, and is visually recognized by a human eye wearing a spectacle display, as described in the first and second embodiments. According to one result, it is possible to obtain the image display of the SVGA specification comparable to that of the workstation of SUN.

17 (a) to 17 (c) show a glasses display according to the fourth embodiment of the present invention. (a) shows a transparent attachment 75 containing a hologram 58,
When this is attached to the prescription glasses lens 57a in use shown in (b), a glasses lens 57a having a hologram 58 is obtained as shown in (c). When this is attached to a spectacle frame (not shown) having an image information source such as a liquid crystal display, the spectacle display as described above can be obtained.

FIG. 18 shows an eyeglass display according to a fifth embodiment of the present invention. The parts common to those of FIG. The difference is in the configuration they have. The variable focus lens 82 is configured by forming a thin film (not shown) having an electro-optic (EO) effect on the spectacle lens 57a, and forming transparent electrodes 82a arranged concentrically on the thin film. When a voltage is selectively applied to the transparent electrodes 82a arranged in concentric circles, a focus variable effect using the EO effect can be obtained. Therefore, it is possible to provide a spectacles display which does not require megamesh processing and serves as near glasses and reading glasses.

[0037]

As described above, according to the spectacle display of the present invention, each constituent unit is downsized.
Can be built into glasses. Therefore, the user can use the foreign object without having a feeling of attachment. It can be used as, for example, a computer display, a prompter, a vehicle, an aircraft head-up display, or a head mounted display.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a first embodiment of the present invention.

FIG. 2 is a partially enlarged view of FIG. 1;

FIG. 3 is an explanatory view showing a general method for producing a hologram.

FIG. 4 is an explanatory diagram showing a method for producing a hologram according to the first embodiment of the present invention.

FIG. 5 is an explanatory diagram showing a modified example of the first embodiment of the present invention.

FIG. 6 is an explanatory diagram showing the relationship between the visibility of the external world and the lattice spacing of hologram interference fringes.

FIG. 7 is an explanatory diagram showing an angle of view when a person looks at a display.

FIG. 8 is an explanatory diagram showing a relationship between glasses and an eyeball.

9 is an explanatory view showing glasses in correspondence with FIG. 1. FIG.

10 is an explanatory view showing a spectacle lens in correspondence with FIG.

FIG. 11 is an explanatory diagram showing the principle of a magnifying glass (loupe).

FIG. 12A is an explanatory diagram showing a wavefront state when recording one point on a hologram. FIG. 12B is an explanatory diagram showing reproduction on a hologram.

13 (a) is an explanatory diagram showing the production of a hologram, and (b) is an explanatory diagram showing reproduction on the hologram.

FIG. 14 is an explanatory diagram showing a second embodiment of the present invention.

FIG. 15 is an explanatory diagram showing a method for producing a hologram according to the second embodiment of the present invention.

FIG. 16 is an explanatory diagram showing a third embodiment of the invention.

FIG. 17 (a) is an explanatory view showing a hologram according to a fourth embodiment of the present invention (b) is an explanatory view showing a spectacle lens according to the fourth embodiment of the present invention (c) is a fourth embodiment of the present invention Explanatory drawing showing an embodiment

FIG. 18 is an explanatory diagram showing a fifth embodiment of the invention.

FIG. 19 is an explanatory diagram showing a conventional HMD.

FIG. 20 (a) is an explanatory view showing a conventional closed-type HMD (b) is an explanatory view showing a conventional see-through HMD (c) is an explanatory view showing a conventional see-through HMD

[Explanation of symbols]

1, display 2,
Eyes 4, eyes 7,
Glasses frame 8, Pat 15,
Laser 16, 19, 24, Mirror 17,
Half mirror 18,23, beam 20,2
2, 25, lens 21, collimator lens 26,
Dry plate 30, convex lens 32,
Object 33, erecting virtual image 35,
Object points 36, 38, reference light 40,
Divergent spherical wavefront 40a, point light source 41,
Spherical wavefront 43. Object 44,
Monochromatic light 45, real image 45a,
Reference light source 56, protective film 57a,
57b, spectacle lens 58, hologram 59,
Liquid crystal panel 72, deflector 73,
Laser light source 74, fluorescent screen 75,
Reflective mirror 82, variable focus lens 82a,
Transparent electrode 101, liquid crystal panel 102,
Signal line 103, backlight light source 104
a, concave lens 104b, convex lens 105,
Mirrors 106, 108, 116, luminous flux 109,
Virtual image 110, case 112,
117, free-form surface prism 113, 114, reflective surface 11
8a, 118b, luminous flux

Claims (13)

[Claims] 1. An image display unit, which is provided in a predetermined portion of eyeglasses such as eyeglass lenses and eyeglass frames, and emits a display image toward a predetermined area of the eyeglass lens, and through the predetermined area of the eyeglass lens. An eyeglass display comprising optical means for visually recognizing the displayed image with the outside world. 2. An image display unit, which is provided in a predetermined portion of eyeglasses such as an eyeglass lens and an eyeglass frame, and emits a display image toward a predetermined area of the eyeglass lens, and through the predetermined area of the eyeglass lens. Optical means for visually recognizing the outside world and the display image, a see-through function for controlling the optical means to visually recognize the outside world and the display image at the same time, a glasses function for visually recognizing only the outside world, and a display for visually recognizing only the display image A spectacles display comprising a control means for selecting one of the functions. 3. An image display unit which is provided in a predetermined portion of eyeglasses such as an eyeglass lens and an eyeglass frame, and which emits a display image toward a predetermined area of the eyeglass lens, and through the predetermined area of the eyeglass lens. Optical means for visually recognizing the outside world and the display image, and audio means provided on another predetermined portion of the glasses such as the spectacle lens and the spectacle frame for outputting an internal voice or inputting an external voice are provided. Glasses display characterized by that. 4. The image display means is a liquid crystal display, an EL display, a plasma display, or a display using a micro movable mirror manufactured by a micromachine technology, and the optical means is
The glasses display according to claim 1, 2 or 3, which is a hologram. 5. The spectacles display according to claim 1, 2 or 3, wherein the image display means and the optical means are covered with a protective film. 6. The spectacles display according to claim 1, wherein one of said control means is an electrochromic element which permits or prohibits visual recognition of the outside world. 7. The spectacles display according to claim 1, wherein one of said control means is an electro-optical element which permits or prohibits image display. 8. The image display means displays an image by receiving a laser or LED light source that emits light modulated by an image signal, a deflection means that deflects and scans the light, and the deflection-scanned light. The spectacles display according to claim 1, wherein the spectacles display includes a screen. 9. The image display means is a laser or LE that two-dimensionally emits light modulated by an image signal.
A light source of a two-dimensional array of D. 1, 2, or 3.
Glasses display as described. 10. The spectacle display according to claim 1, wherein the spectacle lens is covered with an antireflection film for preventing reflection of external light. 11. The structure of claim 1, wherein the spectacle lens is covered with a focus variable thin film based on an electro-optic effect.
Glasses display according to 2 or 3. 12. The hologram comprises a silver salt photographic dry plate, dichromate gelatin, photoresist, photopolymer, photochromic, photodichromic, plastic, ferroelectric, magneto-optical material, electro-optical material, amorphous semiconductor, photolithography. The spectacle display according to claim 4, wherein the spectacle display is made of a material selected from a flexible material. 13. The spectacle display according to claim 4, wherein the hologram is configured to be removable from the spectacle lens.