JP2018508841A - Adjustable optical stereo glasses - Google Patents

Abstract

The optical 3D stereoscopic glasses of the present invention are composed of a main body (7), a left lens component (5L), and a right lens component (5R). The optical kid of the lens component (5L, 5R) provides positive parallax high stereo, positive parallax low stereo, negative parallax high stereo, and minus parallax low stereo through the optical refraction, and through these observation modes, it is projected on the flat screen. The visual effect of the 2D image that looks like a 3D solid is obtained. [Selection] Figure 6

Description

  This is an invention related to optical stereoscopic glasses, and more precisely, an invention related to a kind of adjustable optical stereoscopic glasses. When viewing 2D images (hereinafter referred to as 2D images) on a flat screen using these glasses, the stereoscopic vision of 3D images (hereinafter referred to as 3D images) can be felt.

All the scenery in the natural space is reflected in the 3D image of 3D with human eyes. It is a visual image obtained by comprehensively processing a live image of the human brain by adding influencing factors such as binocular parallax, visual field, spatial perspective, atmospheric perspective, and kinesthetic sensation. Of these influencing factors, the most important is binocular parallax.
Fusion of the offset image of the human brain in each eye's visual retina is usually called “sight”. As shown in Figures 1 (a), 1 (d), and 1 (e), human eyes are in the pupil (left eye is displayed as L and right eye is displayed as R) 1 (normally 60 to 60 for adults) An image offset or “parallax” is formed in each visual retina due to a minimal viewing angle difference when viewing the object. The two shift images are almost uniform, but there is a difference, because the visual information seen by one eye is not captured entirely by another eye.
When the brain merges two shift images, it adopts the common part and adds a small difference. 3D vision when humans watch movies and television is born from this very small difference. In short, because of the binocular parallax, the brain could sense the relative position and stereoscopic effect of the true 3D space scene.

  Currently, various 3D stereoscopic image technologies based on the principle of horizontal parallax have been developed. Since the human eyes are at the same height, there is only horizontal parallax (x-axis) and no vertical parallax (y-axis). When viewing regular 3D images on a flat screen (for example, a movie screen), the binoculars that focus on the flat screen become spectacles in the visual space, unlike when looking at a spectacle in which the function of both eyes is in real space. A spatial parallax is generated by collecting the focal point. Usually, the parallax is the difference in the visual position along the line of sight of both books, but the parallax senses a scene reflected on a flat screen by a human brain as a three-dimensional scene in the visual space.

When a scene of a normal stereoscopic image is projected between both eyes and the flat screen, it is called a negative parallax effect, and when it is projected behind the flat screen, it is called a positive parallax effect.
A scene with a negative parallax effect feels as if it floats up from a clean plane, and a scene with a positive parallax effect feels as if it falls into the plane of a screen.
Special 3D stereoscopic glasses (i) or 3D stereoscopic screens (ii) must be used to feel the stereoscopic vision of the video. In the case of the former, there are anaglyph glasses, polarized glasses, LED glasses, shutter glasses, image separation (split image = two images next to the screen are transferred), etc., the latter In this case, there are a lenticular screen, an interleaved screen, a flow separation screen, and a self-adaptive stereoscopic television.

  Ordinary 3D stereoscopic images are created so that spatial unevenness can be felt by simulating the sensing process of both eyes. As shown in Fig. 1 (b), the scene space of the scene is simulated by simulating both human eyes with two cameras (L1, R1) installed at equal heights away from each other with respect to the distance between the eyes. Shoot the target depth. When the audience uses normal 3D 3D glasses or a special 3D 3D screen to view the shooting scene, two shift images are formed on the left and right eye retina (= imaging, and so on). The three-dimensional vision of the scenery is created by the brain fusion process.

Fig. 1 (c) illustrates the basic concept of normal 3D video production. The upper half is the truth space 300 and the lower half is the visual space 400. In the true space 300, three scenes 10, 11, and 12 with different spatial positions are taken using the two cameras (L1, R1) shown in FIG. 1 (b). In the visual space 400, the human eyes (L, R) observe the shifted images of the scenes 10, 11, 12 taken by the photographing devices (L1, R1) with the flat screen 4.
In the truth space 300, the object to be photographed is 10, 11, and 12 with a solid reference interval 2 in which the interval between the photographing devices L1 and R1 can be changed. Adjust the two cameras (L1, R1) so that the horizontal axis and the depression angles of 60 and 61 are sandwiched and focused on the scene 11 respectively.
In the visual space 400, the shifted images of the scenes 10, 11, and 12 taken by the photographing machines (L1, R1) are displayed. At this time, the distance between both eyes is set to 1, and the image point of the scene 11 is positioned on the flat screen 4 (this is because the photographing machines L1 and R1 are condensed and gathered in the scene 11 in the true space 300). So that zero parallax is formed.
Such an observation mode is defined as a zero parallax observation mode 30. If the shifted images (10L, 10R) of the scene 10 are located in front of the screen 4, the shifted image 10L of the left eye L is on the right side, and the shifted image 10R of the right eye R is on the left side. In this situation, the eyes cannot be gathered unless the eyes of both eyes (L, R) are in perspective.
The observation mode when the shifted images (10L, 10R) are positioned in front of the screen 4 is defined as a negative parallax observation mode 31. Unless otherwise specified, the following defines the vertical direction as the eye gaze direction (Z-axis).
If the shift image (12L, 12R) of the scene 12 is positioned behind the screen 4, the shift image 12L of the left eye L is positioned on the left side, and the shift image 12R of the right eye R is positioned on the right side. If eyes of eyes (L, R) are not squinted outward, they cannot be assembled. An observation mode in which the shifted images (12L, 12R) are located behind the screen 4 is defined as a plus parallax observation mode 32.

Using special 3D stereoscopic glasses, or viewing the video taken by the above-mentioned camera (L1, R1) on a special screen, you can feel stereoscopic vision. In other words, if the spatial parallax image information provided from special 3D glasses or a special screen is received, stereoscopic vision is immediately sensed by the brain. This is because the left eye image of the left eye's visual retina and the right eye image of the right eye's visual retina filtered through special glasses or special screens produced stereoscopic vision through brain fusion and processing.
However, when viewing normal stereoscopic images, sometimes due to excessive parallax, excessive aggregation, excessive diffusion, and binocular parallax fusion limit, eyestrain, dizziness, headache, Problems such as vomiting occur. It should be noted that frequent switching between aggregation and diffusion also causes image deformation, distortion, and ghosting.

  In the visual space 400, the distance between the two shift images (12L, 12R) located behind the flat screen 4 exceeds the pupil distance 1 of both eyes, and excessive diffusion occurs, and both lines of sight (L, R) Extreme outward squinting limits the effective fusion of left-eye image 12L and right-eye image 12R, causing visual fatigue and distress (Figure 1 (d)).

  In the visual space 400, the set point of two shift images (10L, 10R) located in front of the flat screen 4 is too close to the eyes (R, L), and an excessive set of lines of sight (L, R) occurs. Extreme strabismus inward of both lines of sight (L, R) limits the effective fusion of left-eye image 10L and right-eye image 10R, causing visual fatigue and distress (Fig. 1 (e)).

  Stereoscopic images are usually completed in two stages: early production and late production. In the first half of the year, materials are shot from two cameras (L1, R1), and in the second half, the materials are digitized based on the principle of horizontal parallax and stereoscopic vision. In the process, the scene of the material is divided into several layers (usually 4-8 layers). This flow is also used to switch from 2D video to 3D stereoscopic video.

  Production of normal 3D stereoscopic images requires a large amount of human power and cost, and when viewing 3D images with ordinary 3D glasses or screens, the layer's discoloration occurs, and the natural perception of the human eye with respect to the spatial stereoscopic effect occurs. I cannot express it as it is. Human eye perception of stereoscopic scenery is an extension of the natural continuity of space, and it is necessary to reproduce the scenery with infinite layer divisions. As has been said many times, normal 3D image production cannot avoid excessive contraction or diffusion of both eyes, causing problems such as distress, dizziness, headache, and nausea.

In order to solve the above-mentioned problems, the present invention proposes optical stereoscopic glasses that make stereoscopic vision such that a 2D image on a flat screen looks like a 3D image.
The adjustable optical stereo glasses proposed by the present invention is composed of a main body, left and right lens components, and when viewing 2D images reflected on a flat screen through the lens,
(A) The left-eye shift image seen by the left eye is different from the 2D image displayed on the flat screen due to the left lens component.
(B) The position of the right-eye shift image seen by the right eye is different from the 2D image displayed on the flat screen due to the right lens component.
(C) There is a spatial difference in the position of the left and right shifted images detected by the left and right eyes.
(D) The left and right eye shift images viewed using the glasses of the present invention form a total of four types of observation modes: plus parallax high stereo, plus parallax low stereo, minus parallax high stereo and minus parallax low stereo. In addition, when viewing a 2D screen reflected on a flat screen by using these observation modes, 3D stereoscopic vision can be felt.
It should be particularly noted here that the 2D image of the flat screen viewed with the optical stereoscopic glasses of the present invention is an ordinary 2D screen and does not require any conversion to normal 3D and processing.

The following is a brief description of each of the attached illustrations and explains the features of the present invention more clearly.
Explanation about the distance between pupils creating a three-dimensional effect Changeable three-dimensional reference interval by two cameras Observation mode related to horizontal parallax Excessive diffusion of observation Observational excessive shrinkage Changes in observation mode by adjusting the three-dimensional reference interval Changing the observation mode by changing the focus Observation using the Galilei telescope Example of use of the adjustable optical stereoscopic glasses of the present invention (from the back) Figure 3 (a) optical stereo glasses (from the left) Figure 3 (a) optical stereo glasses (from the front) Figure 3 (a) optical stereo glasses (from the right) Structure of the optical stereoscopic glasses shown in Fig. 4 (a) Figure 3 (a) optical stereo glasses (from top) Lens component (left and right) of optical stereo glasses consisting of multiple optical kid High stereoscopic viewing mode with plus parallax; High stereoscopic viewing mode with negative parallax Raw body observation mode with plus parallax Low stereoscopic viewing mode with negative parallax Observing effect of space scenes by rectangular prisms with a horizontal axis Observation effect of space scenes by another rectangular prism with a horizontal angle Plus parallax high stereoscopic viewing mode for viewing a flat screen with a pair of rectangular prisms at an angle to the horizontal axis Plus parallax low stereoscopic viewing mode for viewing a flat screen with a pair of rectangular prisms that are at an angle to the horizontal axis Observation mode for viewing a flat screen with a three-prism view Observation mode for viewing a flat screen with another three prisms Visual difference between two three prisms due to staggered spacing Practical example of left and right lenses of optical stereoscopic glasses of the present invention, and zero parallax high stereoscopic observation mode for viewing a flat screen with the glasses Practical example of left and right lenses of optical stereoscopic glasses of the present invention, and zero parallax low stereoscopic observation mode for viewing a flat screen with the glasses A practical example of the left and right lenses of the optical stereoscopic glasses of the present invention comprising six three prisms, and a plus parallax high stereoscopic observation mode for viewing a flat screen with the glasses. A practical example of the left and right lenses of the optical stereoscopic glasses of the present invention comprising six three prisms, and a plus parallax low stereoscopic observation mode for viewing a flat screen with the glasses. A practical example of the left and right lenses of the optical stereoscopic glasses of the present invention comprising six three prisms, and a plus parallax high stereoscopic observation mode for viewing a flat screen with the glasses. A practical example of the left and right lenses of the optical stereoscopic glasses of the present invention comprising six three prisms, and a plus parallax low stereoscopic observation mode for viewing a flat screen with the glasses. A practical example of the left and right lenses of the optical stereoscopic glasses of the present invention consisting of eight three prisms, and a plus parallax high stereoscopic observation mode for viewing a flat screen with the glasses. A practical example of the left and right lenses of the optical stereoscopic glasses of the present invention comprising eight three prisms, and a plus parallax low stereoscopic observation mode for viewing a flat screen with the glasses. A practical example of the left and right lenses of the optical stereoscopic glasses of the present invention consisting of eight three prisms, and a plus parallax high stereoscopic observation mode for viewing a flat screen with the glasses. A practical example of the left and right lenses of the optical stereoscopic glasses of the present invention comprising eight three prisms, and a plus parallax low stereoscopic observation mode for viewing a flat screen with the glasses.

From Fig. 2 (a), it can be seen that the visual stereoscopic effect of the flat screen 4 viewed with stereoscopic glasses can be dynamically altered by adjusting the variable stereoscopic reference interval 2 of the two cameras (L1, R1). .
FIG. 2 (a) shows the observation mode of the true space (300, 301, 302) and the corresponding visual space (400, 401, 402). In the true space (300, 301, 302), two cameras (L1, R1) are installed at a variable solid reference interval 2 to photograph three space scenes (10, 11, 12). The eye (L, R) explained the image formation in the visual space (400, 401, 402) and the observation mode at that time when viewing these scenes (10, 11, 12) reflected on the flat screen 4 through the optical stereoscopic glasses 5 .
As shown in FIG. 2 (a), the length of the changeable stereoscopic reference interval 2 is directly related to the spatial depth of the three scenes (10, 11, 12) in the visual stereoscopic space.
For example, the changeable 3D reference interval 2 of 2 cameras (L1, R1) in the true space (300) can be changed by 2 cameras (L1, R1) in the true space (301) If it is smaller than the reference interval 2, the spatial depths of the three scenes (10, 11, 12) in the visual space (400, 401) have the same relationship, but the three scenes (10, 11 in the visual space (401) are similar. 12), the spatial depths of the three scenes (10, 11, 12) in the visual space (400) are even smaller.
This direct relationship between the three-dimensional reference interval 2 and the spatial depth of the three scenes (10, 11, 12) also appears in the visual space (401, 402) corresponding to the true space (301, 302). ing. Therefore, it can be understood that if the solid reference interval 2 that can be changed in the true space is increased, the spatial depth of the scene image in the visual space also increases.

Fig. 2 (b) explains that the three-dimensional effect of the image displayed on the screen screen 4 viewed through the stereoscopic glasses can be modified by adjusting the set point of the two cameras.
(I) Two space scenes (10, 12) are photographed by two photographing machines (L1, R1) having the same changeable stereoscopic reference interval 2 in the true space (303, 304, 305).
(Ii) Image formation in the visual space (403, 404, 405) and its observation mode when viewing two scenes (10, 12) where both eyes (L, R) are reflected on the screen 4 through the glasses 5.
The set point is changed by adjusting the angle (60, 61) between the two cameras (L1, R1) and the horizontal axis. As shown in Fig. 2 (b), by increasing the set (for example, in the true space, the angle between the two cameras (L1, R1) and the horizontal axis (60, 61) is expanded), the scenery ( The image of 10, 12) is moved from the front of the flat screen 4 to the rear thereof.
In the true space 303, the two cameras (L1, R1) are parallel to each other and the angle between the horizontal axis is 90 °, and the scenery (10, 12) in the visual space 403 is formed in front of the flat screen 4. To do.
In the truth space 304, the angle between the camera (L1, R1) and the horizontal axis is (60, 61) and gathers in front of the scenery 12, but in the visual space 404, the scenery (10, 12) Form an image near the flat screen 4.
In the truth space 305, the photographing devices (L1, R1) are installed at an included angle larger than the included angle (60, 61) of the truth space 304 and gather in front of the scenery (10, 12). In the visual space 405, scenes (10, 12) are formed behind the flat screen 4.

Binocular parallax and spatial parallax are the most important elements for realizing 3D stereoscopic vision.
The optical stereoscopic glasses of the present invention are referred to as a two-dimensional flat surface (hereinafter referred to as “flat screen”. For example, a movie screen, a display of a TV and a computer, a game player, a flat PC, a liquid crystal display of a mobile phone, etc.) We proposed an observation method that makes the screen look like a 3D image. If you look at the 2D screen reflected on the flat screen through the glasses of the present invention, it will stimulate the spatial stereoscopic perception of both eyes, naturally extend the continuity of the space, 3D stereoscopic vision and spatial depth behind the brain, ie 3D Stereoscopic observation can be realized. The optical 3D glasses of the present invention not only eliminate the spatial layer feeling when viewing 3D 3D images, but also eliminate the trouble of converting and making 2D screens into 3D 3D images.

  As shown in FIGS. 4 (a) to (d), FIG. 5 and FIG. 6, the optical stereoscopic glasses 5 of the present invention are composed of a main body 7 and left and right lens components (5L, 5R) which are comfortable to wear. Among them, the left and right lens components (5L, 5R) are each a combination of a plurality of optical prisms, lenses, plane mirrors, and curved mirrors (hereinafter referred to as “optical kid”). The optical kid is processed with a light, highly transparent, and high refractive index optical material such as optical glass, plastic, and resin, and includes, but is not limited to, solid, liquid, and colloidal materials. In consideration of preventing the image from being lost, materials with no refractive index, no color difference, and a vertex angle that is not so large are selected.

The refraction of multiple optical kid overlaps the eyes of both eyes, causing a spatial shift in the observation of 2D images. The two optical kits shown in FIGS. 8 (a) to 8 (d) provide four types of observation modes by refraction, and create a stereoscopic vision in which a 3D image can be seen even in a two-dimensional image of the flat screen 4. In addition, the best parallax fusion can be realized by adjusting the refractive index of the optical kid.
The optical stereoscopic glasses 5 can eliminate the influence on the 3D stereoscopic vision due to zero parallax when both eyes are focused on the flat screen. When viewing the 2D image of the flat screen 4 with the optical stereoscopic glasses 5, the two eyes sense the displacement image due to the displacement of the space, each forms an image on the left and right visual retinas, and two deviations with spatial differences due to the continuous fusion of the brain. Generate a transfer video. Due to the spatial parallax, both eyes sense 3D stereoscopic vision and form a continuous stereoscopic vision space.

As a difference between 2D images and 3D stereoscopic images, the scenes of 2D images display the position of the flat screen 4 (the position of the screen 4 in the true space) in addition to their horizontal axis constellation (X) and vertical axis constellation (Y). There is a common longitudinal axis constellation (Z).
The 3D stereoscopic image has a depth of a space that is not observed in the 2D image of the flat screen 4 or a stereoscopic perspective (that is, a variable of the vertical axis coordinate).
The stereoscopic vision of a scene in the true space is expressed by the brain's perception of the 3D constellation of the space scene by the binocular parallax, with the binocular gathering point and focus both focused on the scene.
The observation of the flat screen 4 on the 2D screen is that the collection point and focal point of both eyes are focused on the surface of the flat screen, and the brain can detect only the two-dimensional constellation of the plane scene due to its zero parallax, even if the brain is in perspective. Even if other spatial information such as relative motion and motion parallax is sensed, the intense plane sensation generated from zero parallax cannot be completely filled.
Usually, there is a phenomenon called “planar observation effect” because the brain refuses to perceive 2D video on the screen 4 as 3D stereoscopic video due to the presence of zero parallax. However, when viewing a two-dimensional image on the flat screen 4 via any auxiliary tool, spatial parallax occurs, and the effect of the flat observation is reduced or eliminated. As shown in Fig. 3, the optical component of the lens component (5L, 5R) produces an observation effect similar to that used when using the Galilei telescope. Reduced or eliminated, 3D stereoscopic vision is perceived.

In order to reduce the stress of eyes caused by wearing for a long time, the lens components (5L, 5R) of the 3D glasses 5 adopt an adjustable 3D reference interval 2, which corresponds to the true space 301 shown in Fig. 2 (a). With the observation mode suitable for the depth of the visual space 401 and the optimum set point, the plus parallax observation mode of the real space 305 and the corresponding visual space 405 shown in FIG. 2B is provided.
In addition, as ideal lens components (5L, 5R), both eyes are gathered within the optimum adjustment range, and various parallaxes are provided to satisfy various observation needs, as shown in Fig. 1 (d). It must be able to prevent excessive squinting to the outside of the eye due to excessive diffusion, or squinting to the inside of the eye by excessive gathering as shown in FIG. 1 (e).

  The left and right lens components (5L, 5R) are built into the main unit 7 of the glasses, and offer one observation mode of plus parallax high stereo, plus parallax low stereo, minus parallax high stereo and minus parallax low stereo 3D stereoscopic vision must be built. Each of the observation modes will be described in detail in FIGS. 8 (a) to 8 (d).

FIG. 6 shows a specific example of the optical stereoscopic glasses 5.
The optical kid of the left lens component 5L has an outer three prism 102, an intermediate three prism 101, and an inner three prism 100, respectively, and the mutual intervals are 90 and 96, respectively.
On the other hand, the optical kid of the right lens component 5R also has one external three prism 112, one intermediate three prism 111, and one internal three prism 110, and the distance between them is 91 and 97.
In addition, there are an optional device 38 used for adjusting the space of the intervals 96, 97 and an optional device 39 for adjusting the included angles 60, 61 of the optical kids 102, 112.
With these devices, the horizontal parallax and the vertical parallax of the stereoscopic glasses 5 can be optimally adjusted to reduce or completely eliminate the influence of zero parallax when viewing a 2D screen.

The adjusting device 38 is installed on both sides of the frame of the glasses and is adjacent to the lens components (5L, 5R). The device moves along one axis (eg, moves up and down) to adjust the spacing space 96, 97 between the three prisms (100, 101) and (110, 111) to optimize the screen spatial shift and gathering point To.
The adjusting device 39 is installed on the main table 7 of the glasses and moves along one axis (for example, forward and backward movement) to change the angle (60, 61) of the outer three prisms (102, 112) of the lens component (5L, 5R). ) To optimize the screen spatial shift and gathering point.
When the spatial distance (96, 97) between the middle and inner three prisms (100, 101) and (110, 111) is adjusted to zero by the adjusting device 38, the three prisms (100, 101) and (110, 111) ) To a rectangular prism structure. In this state, the spatial shift of the imaging screen and the adjustment of the collection point can also be realized by finely adjusting the variable angles (60, 61) of the outer three prisms (102, 112).

  FIG. 7 is a sketch of the structure of the left and right lens components (5L, 5R) of the optical stereoscopic glasses of the present invention. The optical kid of the left lens component 5L is displayed as 1000, 2000, 3000, 4000..., And the optical kid of the right lens component 5R is displayed as 1001, 2001, 3001, 4001. Due to commercial applicability considerations, the optical kid inside the lens component (5L, 5R) can range from 0 to 100. However, the optical kid numbers of the left and right lens components (5L, 5R) cannot be zero at the same time.

FIGS. 8A and 8D show four types of observation modes for realizing stereoscopic vision when viewing a 2D image on the flat screen 4 through the optical stereoscopic glasses 5. The distance between both eyes is 1. When the left eye L views the screen through the left lens component 5L, the image seen in the eye is fixed on the left eye visual retina 6, and when the right eye R views the screen through the right lens component 5R, the image is fixed on the right eye visual retina 7. . Image points 10 to 13 are a part of the 2D screen displayed on the screen 4.
The image points 20 to 21 are fixed to the left visual retina 6 when viewing the corresponding image points 10 and 11 through the left lens component 5L, and the image points 22 to 23 are connected to the corresponding image point 12 through the right lens component 5R. When viewing 13, the right visual retina 7 is fixed.

FIG. 8A shows a kind of plus parallax high stereoscopic observation mode related to horizontal parallax and vertical parallax. The left eye's visual retina 6 and the right eye's visual retina 7 are located behind the screen 4 and form a backward vertical shift. The visual retina 6 of the left eye and the visual retina 7 of the right eye have (or do not have) the same longitudinal axis (Z) coordinates, and the visual retina 6 can be located behind the visual retina 7, and conversely, the visual retina 7 is behind the visual retina 6. It can also be localized.
When the left eye L looks at the image points 10 and 11 on the screen 4, the image points 20 and 21 fixed on the visual retina 6 of the left eye cause a horizontal shift to the right, and the right eye R becomes the image point 12 on the screen 4. When viewing 13, the image points 22 and 23 fixed on the visual retina 7 of the right eye shift to the left.

FIG. 8B shows a kind of plus-parallax high stereoscopic observation mode related to horizontal parallax and vertical parallax. The left-eye visual retina 6 and the right-eye visual retina 7 are located in front of the screen 4 and form a forward vertical shift. The visual retina 6 of the left eye and the visual retina 7 of the right eye have (or do not have) the same longitudinal axis (Z) coordinate, so that the visual retina 6 can be localized in front of the visual retina 7, and conversely, the visual retina 7 is in front of the visual retina 6. It can also be localized.
When the left eye L looks at the image points 10 and 11 on the screen 4, the image points 20 and 21 fixed on the visual retina 6 of the left eye cause a horizontal shift to the right, and the right eye R becomes the image point 12 on the screen 4. When viewing 13, the image points 22 and 23 fixed on the visual retina 7 of the right eye shift to the left.

FIG. 8 (c) is a kind of plus parallax low stereoscopic observation mode related to horizontal parallax and vertical parallax. The left eye's visual retina 6 and the right eye's visual retina 7 are located behind the screen 4 and form a backward vertical shift. The visual retina 6 of the left eye and the visual retina 7 of the right eye have (or do not have) the same longitudinal axis (Z) coordinates, and the visual retina 6 can be located behind the visual retina 7, and conversely, the visual retina 7 is behind the visual retina 6. It can also be localized.
When the left eye L looks at the image points 10 and 11 on the screen 4, the image points 20 and 21 fixed on the visual retina 6 of the left eye cause a horizontal shift to the left, and the right eye R becomes the image point 12 on the screen 4. When viewing 13, the image points 22 and 23 fixed on the visual retina 7 of the right eye shift to the right.

FIG. 8D shows a kind of negative parallax low stereoscopic observation mode related to horizontal parallax and vertical parallax. The left-eye visual retina 6 and the right-eye visual retina 7 are located in front of the screen 4 and form a forward vertical shift. The visual retina 6 of the left eye and the visual retina 7 of the right eye have (or do not have) the same longitudinal axis (Z) coordinate, so that the visual retina 6 can be localized in front of the visual retina 7, and conversely, the visual retina 7 is in front of the visual retina 6. It can also be localized.
When the left eye L looks at the image points 10 and 11 on the screen 4, the image points 20 and 21 fixed on the visual retina 6 of the left eye cause a horizontal shift to the left, and the right eye R becomes the image point 12 on the screen 4. When viewing 13, the image points 22 and 23 fixed on the visual retina 7 of the right eye shift to the right.

The plus parallax high stereoscopic vision shown in FIG. 8 (a) is the highest priority viewing mode. The plus parallax low stereoscopic vision shown in FIG. 8C is selected only when the screen size is limited as the next priority observation mode. Otherwise, excessive squinting to the outside of the eye due to visual diffusion shown in FIG. 1 (d) may occur.
The minus parallax high stereoscopic vision shown in FIG. 8B is used only as a candidate for the plus parallax low stereoscopic observation mode in FIG. 8C when the screen is limited to a short distance scene. Otherwise, excessive squinting inside the eyes due to the visual set shown in FIG. 1 (e) may occur.
The minus-parallax weak stereoscopic vision shown in FIG. 8 (d) is used only when the screen size and the short-distance scene are all limited as a biliary observation mode. Otherwise, the excessive perspective to the outside of the eye due to the visual diffusion shown in FIG. 1 (d) and the excessive perspective to the inside of the eye due to the visual aggregation shown in FIG. 1 (e) may occur.

In the extreme situation shown in FIGS. 8 (a) -8 (d), the left lens component is in the desired viewing mode, or the image points 12, 13 and the image points 22, 23 visible to the right eye overlap and the right eye is This is an observation mode used when zero parallax (that is, both horizontal parallax and vertical parallax are zero). At this time, the left eye can be normally observed through the left lens component, but the right eye is observed similarly to the naked eye, that is, without using the right lens.
Similarly, the right lens component is in a desired observation mode, or the observation mode used when the left eye has zero parallax by overlapping the image points 10, 11 and the image points 20, 21 visible to the left eye. At this time, the right eye can be normally observed through the right lens component, but the left eye is similar to the naked eye, that is, without using the left lens.

  When the 2D image of the flat screen 4 is viewed with the optical stereoscopic glasses 5, a spatial shift occurs in the visual retina to form one of the observation modes shown in FIGS. 8 (a) to 8 (d). The optical component of the lens component (5L, 5R) preferably has no refractive index. This is because phenomena such as color image difference, color divergence and deformation occur due to the refractive index, and visual fatigue may occur especially when worn for a long time. Since the prism and the plane mirror do not have a refractive index, they are considered to be optical kid superior to the combination of the optical transmission mirror and the curved mirror.

  The lens component (5L, 5R) of the 3D glasses 5 uses an optical kid of an optical prism. Since a combination of prisms occupies less physical space than a plane mirror, it is regarded as a preferred optical kit. Note that, in order to reduce the thickness of the optical glasses 5, the optical optic 5 is usually selected with a high refractive index and a thin optical kit. In order to reduce the color dispersion due to the large refractive index, there is a method of balancing the color dispersion by using prisms having different refractive indexes and different apex angles.

  If the lens component (5L, 5R) comprises an optical kit with a plurality of prisms, the scattered light is more effectively separated and filtered, and the influence of the scattered light can be reduced. When viewing a flat screen image with the naked eye, it is often affected by background light or scattered light, but the 2D image of the flat screen viewed with the lens components (5L, 5R) is more glossy when viewed with the naked eye. A clear and clear observation effect is obtained.

  As described above, it can be understood that the observation modes shown in FIGS. 8A to 8D are realized by the optical lens components (5L, 5R) including various optical kits. Specific examples of the lens components (5L, 5R) will be further explained in combination with FIGS. 10, 11, and 15 to 24 below.

When viewing a spatial scene through the rectangular prism 100 placed at inclination angles 60 and 61, a shift occurred in the line of sight, providing the spatial parallax required to sense 3D stereoscopic vision. As shown in FIGS. 9 (a) to 9 (b), the optical kid 100, 101 is composed of a rectangular prism placed across a horizontal axis and a certain tilt angle, while the tilt angle 60 rotates around the counter hour hand, Tilt 61 rotates around the hour hand.
When viewing the image points 10, 11, 12 in the space through the optical kid 100, 101, a shift occurs in the line of sight 40, 41, 42 due to the refractive action of the optical kid, and the space of the corresponding image point 20, 21, 22 A shift occurs. The spatial shift includes a horizontal shift 720 and a vertical shift 820. That being said, the rectangular prism 100 that is left at an inclination angle can generate an image of spatial shift, and as an optical kit in the lens components (5R, 5L) of the optical stereoscopic glasses, the observation modes shown in FIGS. 8 (a) to 8 (d). It helps to realize. Unless stated otherwise, the following defines a rectangular prism as a prism whose two main optical planes are parallel to each other.

  Based on the principle of optics, when viewing a scene through the rectangular prism 100, the following scene can occur. When the line of sight is perpendicular to the rectangular prism 100 (ie, the tilt angle 60 = 0 ° or 180 ° in FIG. 9A), no shift occurs. On the other hand, as shown in Fig. 9 (a), when 90 °> tilt 60> 0 °, refraction causes the line of sight to shift to the right, horizontal shift to the right, and vertical shift to the rear. To do. It can be seen that when 90 ° <tilt 60 <180 °, the line of sight shifts to the left due to refraction, and the horizontal shift shifts to the left and the vertical shift shifts to the rear.

In the embodiment shown in FIG. 10, the optical kid of the left lens component (5L) is a rectangular prism 100, and an inclination angle 60 around the counter hour hand is installed along the horizontal axis, and the optical kid of the right lens component (5R) is a rectangular prism. At 110, an inclination angle 61 around the hour hand is set along the horizontal axis.
When viewing the 2D image of the flat screen 4 through the lens component (5L, 5R), the image points 10, 11 seen in the left eye L are shifted to the right (720, 721), and the image points 20, 21 are It settles in the visual retina 6. The image points 12 and 13 seen by the right eye R cause a horizontal shift (722, 723) to the left, and the image points 22 and 23 are fixed on the visual retina 7.
If the left visual retina 6 and the right visual retina 7 are all located behind the screen 4, backward vertical shifts 820 and 822 occur. Therefore, the present embodiment is expressed in the plus parallax high stereoscopic observation mode shown in FIG.

In the embodiment shown in FIG. 11, the optical kid of the left lens component (5L) is a rectangular prism 100, and an inclination angle 60 around the hour hand is installed along the horizontal axis, and the optical kid of the right lens component (5R) is a rectangular prism 110. Then, the tilt angle 61 around the counter hour hand is set along the horizontal axis.
When viewing the 2D image of the flat screen 4 through the lens component (5L, 5R), the image points 10, 11 seen in the left eye L are shifted to the right (720, 721), and the image points 20, 21 are It settles in the visual retina 6. The image points 12 and 13 seen by the right eye R cause a horizontal shift (722, 723) to the left, and the image points 22 and 23 are fixed on the visual retina 7.
If the left visual retina 6 and the right visual retina 7 are all located behind the screen 4, backward vertical shifts 820 and 822 occur. Therefore, the present embodiment is expressed in the plus parallax low stereoscopic observation mode shown in FIG.

  The optical kid shown in FIG. 12 is a three prism 100 with an apex angle 70 left along the horizontal axis. When viewing the three image points 10, 11, 12 on the flat screen 4 through the three prisms 100, the spatial shift of the line of sight 40, 41, 42 caused by refraction causes the corresponding image point 20 of the visual retina 6. , 21 and 22. Incidentally, the spatial shift includes a leftward horizontal shift 720, 721, 722 and a backward vertical shift 810.

  The optical kid shown in FIG. 13 is a three prism 100 with an apex angle 70 left along the horizontal axis. When viewing the three image points 10, 11, 12 on the flat screen 4 through the three prisms 100, the spatial shift of the line of sight 40, 41, 42 caused by refraction causes the corresponding image point 20 of the visual retina 6. , 21 and 22. Incidentally, the spatial shift includes rightward horizontal shifts 720, 721 and 722 and a backward vertical shift 810.

Unless stated otherwise, the three prisms referred to in the present invention are defined as prisms that intersect two main optical planes, or an apex angle with an extension thereof.
The spatial shift of the image point of the three prisms 100 shown in FIGS. 12 and 13 is shown in FIGS. 8 (a) to 8 (d) when the three prisms are used in the optical kid of the stereoscopic glasses 5 lens component (5L, 5R). We expressed that the observation mode can be realized.
Based on the principle of optics, when viewing a scene through the three prisms 100, the following scene can occur. When the apex angle 70 rotating counterclockwise from the horizontal axis approaches 0 ° or 180 °, and the incident line-of-sight optical path is perpendicular to the bottom surface of the three prisms 100, no refraction occurs.
However, as shown in FIG. 12, when the apex angle 70 rotating counterclockwise from the horizontal axis is 0 ° <vertical angle 70 <90 °, the horizontal shift is shifted to the left by the refraction action, and the vertical A shift in the rearward position occurs.
As shown in FIG. 13, when the apex angle 70 rotating counterclockwise from the horizontal axis is 90 ° <apex angle 70 <180 °, the horizontal shift is shifted to the right and the vertical shift is caused by refraction. A backward shift occurs.
Therefore, it can be understood that the change of the spatial shift can be realized by the change of the three prisms 100 with respect to the vertical angle of the horizontal axis.

The optical kid of the lens component (5L, 5R) of the optical stereoscopic glasses 5 is left as it is facing the three prisms 100 having the apex angle 70 (the three prisms 101 having the apex angle 71) as shown in the left figure of FIG. 14) or three prisms 110 having an apex angle 70 (left to face the three prisms 111 having an apex angle 71 and having an interval space of 97) as shown in the right figure of FIG. Can do. The difference between the left diagram and the right diagram in FIG. 14 is that the space interval 97 is larger than the space interval 96.
When the image points 10 and 11 are viewed through the optical kids 100 and 101, a spatial shift occurs in the line-of-sight paths 40 and 41 due to refraction, and the corresponding image points are 20 and 21, respectively. The spatial shift is a shift of the horizontal shifts 720 and 721 to the left, and there is no vertical shift. When the image points 12 and 13 are viewed through the optical kids 110 and 111, a spatial shift occurs in the line-of-sight paths 42 and 43 due to refraction, and the corresponding image points are 22 and 23. The spatial shift is a shift of the horizontal shifts 722 and 723 to the left, and no vertical shift occurs.
It can be seen by comparing the left diagram and the right diagram in FIG. 14 that, in the same structure, the larger horizontal space (97 larger than 96) has a larger horizontal shift (722 than 720, 721, 723 has a large horizontal shift). Therefore, the horizontal shift, that is, the adjustment of the horizontal parallax can be realized through the adjustment of the interval space (96, 97) (see the adjustment mechanism 38 shown in FIG. 6).

In the example shown in FIG. 15, the optical kid of the left lens component 5L includes opposing three prisms 100, 101 with a spacing 96 and apex angles 70, 71, and the optical kid of the right lens component 5R has a spacing. This includes three opposing prisms 110 and 111 with 97 and apex angles 75 and 76, respectively.
The lens components 5L and 5R installed symmetrically with respect to the central axis line have a space shape 96 and 97 having a shape of “∨”.
When viewing the image points 10 and 11 through the left lens component 5L, as shown in the image points 20 and 21, the line-of-sight paths 40L and 41L shift to the right due to refraction, and the horizontal shifts to the right (720 and 721). Occurs and no vertical shift occurs. When viewing the image points 12 and 13 through the right lens component 5R, the line-of-sight paths 42R and 43R shift to the left due to refraction as shown at the image points 22 and 23, and the horizontal shifts to the left (722, 723) occur. Occurs and no vertical shift occurs.
Therefore, the present embodiment is an example of expressing a zero parallax high stereoscopic observation mode.

In the example shown in FIG. 16, the optical kid of the left lens component 5L includes a pair of three prisms 100, 101 with a spacing 96 and apex angles 70, 71, and the optical kid of the right lens component 5R has a spacing 97. Confronting three prisms 110, 111 with apex angles 75, 76 are included.
The lens components 5L and 5R installed symmetrically with respect to the central axis line have a space shape 96 and 97 having a shape of “∧”.
When viewing the image points 10 and 11 through the left lens component 5L, as shown in the image points 20 and 21, the line-of-sight paths 40L and 41L are shifted to the left due to refraction, and the leftward horizontal shift (720, 721) Occurs and no vertical shift occurs. When viewing the image points 12 and 13 through the right lens component 5R, as shown at the image points 22 and 23, the line-of-sight paths 42R and 43R are shifted to the right due to the refraction action, and the horizontal shifts to the right (722 and 723). Occurs and no vertical shift occurs.
Therefore, it can be understood that the present embodiment is a representation example of the observation mode of the zero parallax low three-dimensional.

The basic difference between the embodiment of FIG. 15 and FIG. 16 is that if the lens component (5L, 5R) is replaced and the left eye image is compared with the right eye image,
(I) Depending on the combination of the three prisms (100, 101 and 110, 111), the stereoscopic observation mode (high solid department low solid) is praised.
(Ii) It can be seen that the lens component (5L, 5R) is changed to a rectangular prism when the horizontal shift mode changes due to the change in the spatial interval and both the spatial intervals 96 and 97 become zero.

  As shown in FIGS. 15 and 16, the complete structure of the left lens component 5L (for example, the optical kid 100, 101 and the spatial distance 96) and the complete structure of the right lens component 5R (for example, the optical kid 110, 111 and the spatial distance 97) are Spatial parallax can be modified by placing the tilt angles (60, 61) shown in FIGS. 10 and 11. By such a change, the plus parallax high stereoscopic observation mode of FIG. 8A or the plus parallax low stereoscopic observation mode of FIG. 8C can be realized.

In the embodiment shown in FIG. 17, the optical kit of the left lens component 5L is composed of a combination of 100, 101, 102 and three three prisms. Specifically, the three prisms 102 having the apex angle 72 and the changeable angle 60 are placed at the apexes of the opposing three prisms 100 and 101 having the apex angles 70 and 71 and the spatial interval 96 shown in FIG. 90 is a structure in which the three prisms 102 and 101 are partitioned.
The right lens component 5R is composed of three prisms 110, 111, and 112 having apex angles 75, 76, and 77, variable angles 61, and spatial intervals 97 and 91, and mirror-imaged with the left lens component on both sides of the central axis. It is symmetric.
When viewing the image points 10 and 11 of the 2D screen of the flat screen 4 through the left lens component 5L, a spatial shift occurs in the line-of-sight paths 40L and 41L due to refraction, and the image points 20 and 21 corresponding to the left visual retina 6 are As shown, the horizontal shift (720, 721) of the left eye image to the right occurred.
When viewing the image points 12 and 13 of the 2D screen of the flat screen 4 through the right lens component 5R, the refraction action causes a spatial shift of the line of sight paths 42R and 43R, and the image points 23 and 24 corresponding to the right visual retina 7 are As shown, the horizontal shift (722, 723) of the right eye image to the left occurred.
If both the left and right visual retinas 6 and 7 are located behind the flat screen 4, a backward vertical shift (820, 822) occurs.
Therefore, this embodiment can be understood as an example of the plus parallax high stereoscopic observation mode shown in FIG.

In the embodiment shown in FIG. 18, the lens components (5L, 5R) and the embodiment shown in FIG. 17 are substantially the same except for the three prisms 102 with apex angle 72 and the three prisms 112 with apex angle 77.
When viewing the image points 10 and 11 of the 2D screen of the flat screen 4 through the left lens component 5L, a spatial shift occurs in the line of sight paths 40L and 41L due to refraction, and the image points 20 and 21 corresponding to the left visual retina 6 are As shown, the horizontal shift (720, 721) in which the left-eye image is directed to the left occurs.
When viewing the image points 12 and 13 of the 2D screen of the flat screen 4 through the right lens component 5R, a spatial shift occurs in the line of sight paths 42R and 43R due to refraction, and the image points 23 and 24 corresponding to the right visual retina 7 are generated. As shown, the horizontal shift (722, 723) in which the right-eye image is directed to the right occurs.
If both the left and right visual retinas 6 and 7 are located behind the flat screen 4, a backward vertical shift (820, 822) occurs.
Therefore, this embodiment can be understood as an example of expression of the plus parallax low stereoscopic observation mode shown in FIG.

In the embodiment shown in FIG. 19, the optical kit of the left lens component 5L is composed of a combination of 100, 101, 102 and three three prisms. Specifically, the three prisms 102 having the apex angle 72 and the changeable angle 60 are placed at the apexes of the opposing three prisms 100 and 101 having the apex angles 70 and 71 and the spatial interval 96 shown in FIG. 90 is a structure in which the three prisms 102 and 101 are partitioned.
The right lens component 5R is composed of three prisms 110, 111, 112 with apex angles 75, 76, 77 and variable angles 61, spatial intervals 97 and 91, and mirror-symmetrical with the left lens component on both sides of the central axis. To do.
When viewing the image points 10 and 11 of the 2D screen of the flat screen 4 through the left lens component 5L, a spatial shift occurs in the line-of-sight paths 40L and 41L due to refraction, and the image points 20 and 21 corresponding to the left visual retina 6 are As shown, the horizontal shift (720, 721) of the left eye image to the right occurred.
When viewing the image points 12 and 13 of the 2D screen of the flat screen 4 through the right lens component 5R, a spatial shift occurs in the line of sight paths 42R and 43R due to refraction, and the image points 23 and 24 corresponding to the right visual retina 7 are As shown, horizontal shift (722, 723) to the left occurred in the right eye image.
If both the left and right visual retinas 6 and 7 are located behind the flat screen 4, a backward vertical shift (820, 822) occurs.

Therefore, this embodiment can be understood as an example of the plus parallax high stereoscopic observation mode shown in FIG.
In the embodiment shown in FIG. 20, the lens components (5L, 5R) except for the three prisms 102 with apex angle 72 and the three prisms 112 with apex angle 77 are substantially the same as those in the embodiment shown in FIG.
When viewing the image points 10 and 11 of the 2D screen of the flat screen 4 through the left lens component 5L, a spatial shift occurs in the line of sight paths 40L and 41L due to refraction, and the image points 20 and 21 corresponding to the left visual retina 6 are As shown, the horizontal shift (720, 721) in which the left-eye image is directed to the left occurs.
When viewing the image points 12 and 13 of the 2D screen of the flat screen 4 through the right lens component 5R, a spatial shift occurs in the line of sight paths 42R and 43R due to refraction, and the image points 23 and 24 corresponding to the right visual retina 7 are generated. As shown, a rightward horizontal shift (722, 723) occurred in the right eye image.
If both the left and right visual retinas 6 and 7 are located behind the flat screen 4, a backward vertical shift (820, 822) occurs.
Therefore, this embodiment can be understood as an example of expression of the plus parallax low stereoscopic observation mode shown in FIG.

FIG. 17 and FIG. 19 are examples of the plus parallax high stereoscopic observation mode shown in FIG.
In these two embodiments, it is assumed that the apex angles 70, 71, 72, 75, 76, 77, the changeable angles 60 and 61, and the space intervals 90, 91, 96, 97 are all the same, and the line-of-sight path is as shown in FIG. Please note that all of the optical kid 100, 101, and 102 have moved to the right.
However, in the embodiment shown in FIG. 19, since the line of sight passes through the optical kid 100, 101, 102, a leftward horizontal shift occurs in the optical kid 100, 101, and a rightward horizontal shift occurs in the optical kid 102, and This partially offset the horizontal shift that occurred in optical kid 100 and 101.
In the present invention, such multiple effects are called “cancellation”.
Comparing the line-of-sight path (optical path) and the spatial parallax, it can be seen that the embodiment of FIG. 17 has a larger spatial parallax than FIG. This is because the embodiment of FIG. 17 does not have a canceling effect like the embodiment of FIG. In conclusion, FIG. 17 is superior to FIG. 19 in the effect of high stereoscopic observation.

18 and 20 show examples of the plus parallax low stereoscopic observation mode shown in FIG. 8 (a).
In these two embodiments, it is assumed that the apex angles 70, 71, 72, 75, 76, 77, the changeable angles 60 and 61, and the space intervals 90, 91, 96, 97 are all the same, and the line-of-sight path is as shown in FIG. Note that all leftward horizontal shifts occurred through the optical kid 100, 101, 102.
However, in the embodiment shown in FIG. 20, after the line-of-sight path passes through the optical kid 100, 101, 102, a rightward horizontal shift occurs in the optical kid 100, 101, and a leftward horizontal shift occurs in the optical kid 102, and This partially offset the horizontal shift that occurred in optical kid 100 and 101.
Comparing the line-of-sight path (optical path) and the spatial parallax, it can be seen that the embodiment of FIG. 18 has a larger spatial parallax than FIG. This is because the embodiment of FIG. 18 does not have a canceling effect unlike the embodiment of FIG. In conclusion, FIG. 18 is superior to FIG. 20 in the effect of low-level stereoscopic observation.

In the embodiment shown in FIG. 21, the optical lens of the left lens component 5L has four prisms with apex angles 70, 71, 72, 73, variable angles 60, and mutual intervals 90, 92, 96 ( 100, 101, 102, 103).
Specifically, the three prisms 103 having the apex angle 73 are arranged below the left lens component shown in FIG. 17 at a space interval 92 between the three prisms 103 and 101.
The right lens component 5R is composed of four three prisms 110, 111, 112, 113 having apex angles 75, 76, 77, 78 and variable angles 61, spatial intervals 91, 93, 97, and sandwiching the central axis It is mirror-symmetric with the left lens component.
When viewing the image point 10 of the 2D screen of the flat screen 4 through the left lens component 5L, a spatial shift occurs in the visual line 40L due to refraction, and the left eye image as shown by the image point 20 corresponding to the left visual retina 6 is shown. There was a horizontal shift 720 to the right.
When viewing the image point 12 of the 2D screen of the flat screen 4 through the right lens component 5R, a spatial shift occurs in the line of sight path 42R due to refraction, and the right eye image as shown by the image point 22 corresponding to the right visual retina 7 is shown. A horizontal shift 722 to the left occurred.
If both the left and right visual retinas 6 and 7 are located behind the flat screen 4, a backward vertical shift (820, 822) occurs.
Therefore, this embodiment can be understood as an example of the plus parallax high stereoscopic observation mode shown in FIG.

In the embodiment shown in FIG. 22, the optical kid of the left lens component 5L has an apex angle 70, 71, 72, 73, a variable angle 60, and 100, 101, 102, 103 with a mutual interval 90, 92, 96. Consists of a combination of four three prisms.
Specifically, the three prisms 103 with apex angle 73 are placed below the left lens component shown in FIG. 18 and the three prisms 103 and 100 are partitioned by a space interval 92.
The right lens component 5R is composed of four prisms 110, 111, 112, and 113 with apex angles 75, 76, 77, and 78, variable angle 61, and space interval 91, and the left lens component with the central axis in between And mirror image.
When viewing the image point 10 of the 2D screen of the flat screen 4 through the left lens component 5L, a spatial shift occurs in the visual line 40L due to refraction, and the left eye image as shown by the image point 20 corresponding to the left visual retina 6 is shown. There was a horizontal shift 720 to the left.
When viewing the image point 12 of the 2D screen of the flat screen 4 through the right lens component 5R, a spatial shift occurs in the line of sight path 42R due to refraction, and the right eye image as shown by the image point 22 corresponding to the right visual retina 7 is shown. A horizontal shift 722 to the right occurred.
If both the left and right visual retinas 6 and 7 are located behind the flat screen 4, a backward vertical shift (820, 822) occurs.
Therefore, this embodiment can be understood as an example of expression of the plus parallax low stereoscopic observation mode shown in FIG.

In the embodiment shown in FIG. 23, the lens components (5L, 5R) are substantially the same as those in the embodiment shown in FIG. 21 except for the three prisms 103 with apex angle 73 and the three prisms 113 with apex angle 77.
When viewing the image point 10 of the 2D screen of the flat screen 4 through the left lens component 5L, a spatial shift occurs in the visual line 40L due to refraction, and the left eye image as shown by the image point 20 corresponding to the left visual retina 6 is shown. There was a horizontal shift 720 to the right.
When viewing the image point 12 of the 2D screen in the flat screen 4 through the right lens component 5R, a spatial shift occurs in the line of sight path 42R due to refraction, and the right eye image as shown by the image point 22 corresponding to the right visual retina 7 is shown. Left horizontal shift 722 occurred.
If both the left and right visual retinas 6 and 7 are located behind the flat screen 4, a backward vertical shift (820, 822) occurs.
Therefore, this embodiment can be understood as an example of the plus parallax high stereoscopic observation mode shown in FIG.

In the embodiment shown in FIG. 24, the lens components (5L, 5R) are substantially the same as those in the embodiment shown in FIG. 21 except for the three prisms 103 with apex angle 73 and the three prisms 113 with apex angle 78.
When viewing the image point 10 of the 2D screen of the flat screen 4 through the left lens component 5L, a spatial shift occurs in the visual line 40L due to refraction, and the left eye image as shown by the image point 20 corresponding to the left visual retina 6 is shown. A leftward horizontal shift 720 occurred.
When viewing the image point 12 of the 2D screen in the flat screen 4 through the right lens component 5R, a spatial shift occurs in the line of sight path 42R due to refraction, and the right eye image as shown by the image point 22 corresponding to the right visual retina 7 is shown. A rightward horizontal shift 722 occurred.
If both the left and right visual retinas 6 and 7 are located behind the flat screen 4, a backward vertical shift (820, 822) occurs.
Therefore, this embodiment can be understood as an example of expression of the plus parallax low stereoscopic observation mode shown in FIG.

FIG. 21 and FIG. 23 are examples of the plus parallax high stereoscopic observation mode shown in FIG.
In these two embodiments, the apex angles 70, 71, 72, 73, 75, 76, 77, 78, the changeable angles 60 and 61, and the space intervals 90, 91, 92, 93, 96, 97 When the visual line 40L passes through the optical kid 100, 101, 102, 103 in FIG. 21, all horizontal shifts occur, and the visual line 40R is the optical kid 110, 111, 112 in FIG. Note that all left-facing horizontal shifts occurred when passing through.
However, in the embodiment shown in FIG. 23, when the line-of-sight path 40L passes through the optical kid 100, 101, 102, 103, only the optical kid 103 has caused a leftward horizontal shift, and the optical kid 100, 101, 102 had a rightward horizontal shift and partially offset the leftward horizontal shift generated by the optical kid 103.
On the other hand, when the line-of-sight path 40R passes through the optical kid 110, 111, 112, 113, the horizontal shift in the right direction has occurred only in the optical kid 113, and the horizontal shift in the left direction has occurred in the optical kid 110, 111, 112. And partially offset with the rightward horizontal shift generated in the optical kid 103.
Comparing the line-of-sight path (optical path) and the spatial parallax, it can be seen that the embodiment of FIG. 21 has a larger spatial parallax than the embodiment of FIG.
This is because the embodiment of FIG. 21 does not have a canceling effect unlike the embodiment of FIG. In conclusion, FIG. 21 is more effective in low-level stereoscopic observation than FIG.

FIG. 22 and FIG. 24 are examples of the plus parallax low stereoscopic observation mode shown in FIG.
In these two embodiments, the apex angles 70, 71, 72, 73, 75, 76, 77, 78, the changeable angles 60 and 61, and the space intervals 90, 91, 92, 93, 96, 97 When the visual line 40L passes through the optical kid 100, 101, 102, 103 of FIG. 21, all leftward horizontal shifts occur, and the visual line 40R is the optical kid 110, 111, 112 sum 113 of FIG. Please note that when you pass through, all rightward horizontal shifts occurred.
However, in the embodiment shown in FIG. 24, when the line-of-sight path 40L passes through the optical kid 100, 101, 102, 103, only the optical kid 103 has caused a rightward horizontal shift, and the optical kid 100, 101, The left horizontal shift 102 occurred and partially offset the right horizontal shift generated in the optical kid 103.
On the other hand, when the line-of-sight path 40R passes through the optical kid 110, 111, 112, 113, the horizontal shift in the left direction occurs only in the optical kid 113, and the horizontal shift in the right direction occurs in the optical kid 110, 111, 112. And partially offset with the leftward horizontal shift generated in the optical kid 103.
Comparing the line-of-sight path (optical path) and the spatial parallax, it can be seen that the embodiment of FIG. 22 has a larger spatial parallax than FIG.
This is because the embodiment of FIG. 22 does not have a canceling effect like the embodiment of FIG. In conclusion, FIG. 22 is more effective in low stereoscopic observation than FIG.

Each of the embodiments shown in FIG. 10, FIG. 17, FIG. 19, FIG. 21, and FIG. 23 can realize the plus parallax high stereoscopic observation mode shown in FIG. Among them, the embodiment shown in FIG. 10 occupies a lot of physical space and has a defect in which the central angle of the optical kids 100 and 110 blocks a part of the line-of-sight path and there is a blind spot for observation.
In addition, it was found that the example of FIG. 17 has better 3D stereoscopic vision than FIG. 19, and the example of FIG. 21 has better 3D stereoscopic vision than FIG. Compared to FIG. 17, it was found that the embodiment of FIG. 21 had more optical kid, and the resulting stereoscopic glasses were thicker and heavier.
However, FIG. 21 has a larger horizontal shift than FIG. For some applications, the embodiment of FIG. 21 is a better choice than FIG.
What should be noted is the sufficiently large refractive index of the embodiment of FIG. Depending on the strength of its refractive index, FIG. 17 may be selected as the top priority in the field of potential commercial applications.

  The lens components (5L, 5R) in this report are typical practical examples of optical stereoscopic glasses, but the present invention includes other known combinations of optical kid. The condition is that a 3D stereoscopic vision can be realized when a combination of these is viewed on a 2D screen or an image displayed on the flat screen 4. The top priority selection provides the plus parallax high stereoscopic viewing mode shown in Fig. 8 (a), and the second choice provides the plus parallax low stereoscopic viewing mode shown in Fig. 8 (c). is there.

  This report includes, but is not limited to, the manufacturing principle and handling method of optical stereo glasses.

The legend of this report is the reference for explaining and studying the purpose of the present invention. The principle and mechanism of the present invention are the easiest to understand and provide the most practical explanation, but the detailed structure of the optical stereoscopic glasses will be posted. Rather than aiming to convey the concept of the present invention to the reader. It is to be understood that the description and claims relating to the present invention are used for many other purposes and that their applications and uses are well within the scope of protection.
The explanations and sketches in this report are intended to allow engineers in related fields to understand the principles and practical applications of the present invention, and are intentionally published from the desire to adopt and utilize the techniques of the present invention for various applications. Therefore, it cannot be said that the examples posted in this report are complete, and the scope of the present invention is not limited thereto, but is determined within the scope of the appended claims and the entire scope authorized by such claims. I want you to understand what to do.

Claims (15)

The optical 3D stereoscopic glasses include a main body, left and right lens components, and
(a) When viewing a 2D screen displayed on a flat screen with the left lens, the shift image position of the screen detected by the left eye is different from the actual position of the screen on the flat screen in the true space.
(b) When viewing a 2D screen displayed on a flat screen with the right lens, the shift image position of the same screen sensed by the right eye is different from the actual position of the same screen on the flat screen in the true space.
(c) There is a spatial difference in the shifted video position between the left and right eyes.
(d) One of the following observation modes is formed by shifting images of the left and right eyes.
Plus parallax high stereoscopic observation mode plus parallax low stereoscopic observation mode minus parallax high stereoscopic observation mode minus parallax low stereoscopic observation mode Note that a 2D screen reflected on a flat screen can be seen as a 3D stereoscopic image.   In the glasses according to claim 1, the lens component has at least one optical kid on both the left and right sides.   Optical 3D stereoscopic glasses consist of a main unit and left and right lens components. Among them, the lens component has at least one optical kit on both the left and right sides. Due to the refractive action of the optical kit, the negative effect of planar observation is reduced, and a 2D screen reflected on the planar screen can be regarded as a 3D stereoscopic image.   In the glasses of claims 2 and 3, at least one of the optical kid is composed of an optical prism, a lens, a curved lens, and a flat lens.   In the glasses according to claims 2, 3, and 4, at least one of the optical kid is made of glass, resin, plastic, colloid, or other combination material.   The eyeglasses according to claims 2, 3, and 5 are constituted by three prisms in which at least one optical kit has a separation interval.   The second to sixth spectacles include a device in which at least one optical kid is inclined at a set angle and the inclination angle is adjusted.   The glasses according to claims 2 to 7 have no refractive index in their optical kid. This optical 3D stereoscopic glasses includes a main body and left and right lens components, of which (a) the lens component is composed of two or more three prisms having a separation interval on both the left and right sides.
(B) The lens component is one of two or more three prism structures.
(C) By providing a plus parallax high three-dimensional or a plus parallax low three-dimensional observation mode, a 2D screen displayed on a flat screen can be viewed as a 3D stereoscopic image.   In the glasses according to claim 9, two or more three-shaped prisms all have no refractive index.   In the glasses according to claims 9 to 10, two or more three prisms are made of glass, resin, plastic, colloidal material and other combination materials.   The glasses according to claims 9 to 11 have a device in which two or more three prisms are set to a predetermined inclination angle and at least the inclination angle of the outermost three prisms can be adjusted.   The glasses according to claims 1 to 12 are in a plus parallax high stereoscopic observation mode.   The glasses according to claims 1 to 12 are in a plus parallax low stereoscopic observation mode.   The eyeglasses according to claims 6 to 14 have a device for adjusting the space of the optical kid.

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