JP2010145602A - Stereoscopic image compressing/expanding input-output apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system for directly expanding and superposing both screens by a simple optical system and attaining stereoscopic vision, without the use of special a stereoscopic vision monitor for exclusive use which has been used conventionally, or for easily constituting these screens, with respect to the screen where both stereoscopic screens are compressed and arranged horizontally (or vertically). <P>SOLUTION: For the case of a typical lens optical system, the function of compressing/expanding the screens only in one horizontal (or vertical) direction by an objective convex cylindrical lens and an ocular concave cylindrical lens is achieved by an afocal compressing/expanding optical system with an infinite focal distance. Further rotation of the cylindrical lens along a cylindrical curve surface makes the cylindrical lens function equivalent to a prism that corresponds to a rotation angle, and thereby optical axis refraction for superposing right and left both screens can be attained. Furthermore, the constitution of horizontally rotating the optical system about a point P between the objective lens and the ocular lens provides stereoscopic vision glasses, capable of attaining large optical axis refraction with refraction angles of both lenses added thereto by a simple optical system. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to an input / output configuration method and an apparatus thereof, which are configured to compress or expand a stereoscopic image and arrange a screen.

  Conventionally, the most convenient method for stereoscopic viewing is to view a screen in which the three-dimensional left and right screens are arranged side by side vertically or through a lens (magnifying glass) with a prism or a combination of mirrors. Therefore, a method for stereoscopic viewing is generally used. (For example, Patent Document 1 and Patent Document 2) On the other hand, a display screen in which both the left and right screens are compressed and arranged in a vertical or horizontal direction to form a set of three-dimensional screens, which are expanded and expanded to restore the original screen size. There is also a technique for realizing stereoscopic viewing by using a dedicated stereoscopic display device that displays images in a superimposed manner by using different polarized light. (For example, Patent Document 3)

  Furthermore, in recent years, a 3D broadcast system has also been realized in which a 3D left and right screen is compressed in half in a horizontal direction and is arranged and arranged on the left and right for TV broadcasting and the like and broadcasted. In order to actually realize 3D video from now on, the receiver side first performs image processing that expands and enlarges to the original screen size, and further displays the left and right screens on different polarization screens and time-division screens for stereoscopic viewing. Dedicated stereoscopic TV devices need to be prepared, and these could only be done by specially expensive devices in a limited specialized field.

Japanese Utility Model Publication No. 7-34419 Japanese Patent Laid-Open No. 7-128615 JP 2001-305478 A

However, if there is stereoscopic glasses that can be stereoscopically viewed by directly optically expanding and expanding the compressed stereoscopic screen itself displayed on a general TV screen, stereoscopic viewing can be easily performed. is there. For this purpose, a special lens so-called anamorphic lens having different enlargement ratios in the vertical and horizontal directions is required. However, this is generally impossible because it requires a complicated optical lens.
The present invention corresponds to a three-dimensional screen displayed on a normal TV screen and displayed as both left and right screens that are compressed in the horizontal or vertical direction and arranged side by side. Established a method to stretch and enlarge both screens horizontally or vertically and superimpose them, and by using them, stereoscopic image output devices such as stereoscopic glasses and projectors, and this type of compressed stereoscopic images can be easily configured 3D image input device is realized. As a result, a stereoscopic image input / output device that enables easy stereoscopic viewing of the 3D video on a normal TV display screen is realized.

The present invention solves these problems by the means described below, and can easily input a stereoscopic image such as a stereoscopic TV broadcast that could not be realized until now, or directly stereoscopically view from a normal TV display screen. Stereoscopic glasses that allow the user to perform such operations, and an input / output device for a compression / decompression screen corresponding thereto are realized.
Specifically, when looking at the stereoscopic glasses, on a normal TV screen, the 3D broadcast screen is displayed as a screen that is horizontally compressed from the left and right 3D screens. A pair of vertical axis (vertical axis) convex cylindrical lenses that input the left and right screens, and a horizontal angle that can be varied in the horizontal direction so that the input optical axes are directed to the central direction in a substantially right-and-left lateral direction. A pair of mirrors, and a second mirror pair that can change the angle in the horizontal direction so that the optical axis faces the binocular position at right angles to the front, and the focal length of both lenses at the position in front of the binoculars. By including an eyepiece with a pair of vertical (cylindrical) cylindrical concave lenses in the distance of the difference, stereoscopic glasses with a screen magnification function in the horizontal direction were realized.

In addition, these optical systems are composed of a pair of vertical-axis cylindrical concave mirrors and a pair of vertical-axis cylindrical concave mirrors that can change the angle in the horizontal direction, thereby realizing simplified stereoscopic glasses.
Furthermore, two optical systems for the left and right screens are formed in which the two mirror optical systems having the same shape are arranged in parallel at a distance of both eyes, whereby the light beams corresponding to the respective screens in the left and right optical systems. By matching the positions, we realized stereoscopic glasses with a screen enlargement function in the horizontal direction with reduced stereoscopic image distortion.

  On the other hand, since a cylindrical lens is used as an optical system in the present invention, by introducing a configuration in which the lens is horizontally rotated along the cylindrical surface, both the input optical axes are changed by utilizing the prism refraction generated by the rotation. The above-mentioned stereoscopic glasses that can be continuously refracted in the horizontal direction to the optical axis of the front of the eye have been realized.

  Furthermore, the horizontal enlargement optical system for each of the left and right screens is an optical system in which an objective lens using a vertical-axis cylindrical convex lens having a convex surface on the objective side and an eyepiece lens having a vertical-axis cylindrical concave lens having a concave surface on the objective side are paired. And by introducing a configuration in which the optical system is rotated horizontally and symmetrically (outwardly or inwardly from each other) around a point between the objective lens and the eyepiece lens, By obtaining the horizontal refraction of the input optical axis in an amount that is the sum of the prism refraction angles of the lenses, the stereoscopic glasses having a horizontal screen enlargement for adjusting the superposition angle were realized.

  On the contrary, compact stereoscopic glasses were realized by constructing an optical system that compresses vertically instead of enlarging the screen horizontally.

On the other hand, in the lateral magnification optical system of the present invention, the adjustment of the stereoscopic zoom field angle and the adjustment of the convergence angle of the stereoscopic screen, which are indispensable factors in handling the input / output of the stereoscopic screen, can be adjusted independently of each other. In order to do this, by constructing a multi-angle adjustment function that can set a plurality of independent adjustment amounts in one mirror optical system for these mirror optical systems that adjust the angle of view by changing the reflection angle, 3D image that enables adjustment of multiple adjustment factors simultaneously by adjusting the required angle adjustment for each adjustment factor independently for each mirror and using the sum of these adjustments as the mirror adjustment amount. A multi-angle adjustment system for angle adjustment stereoscopic mirror was realized.
Further, in order to use the laterally enlarged stereoscopic screen optical system of the present invention as a projection projector instead of the stereoscopic glasses described above, the optical system is based on an objective cylindrical concave lens and an eyepiece cylindrical convex lens as opposed to the stereoscopic glasses. The optical axis refracting mechanism is constituted by an objective and an eyepiece mirror in order to superimpose the screen, and a plurality of independent mirror optical system pairs of either the objective mirror optical system or the eyepiece mirror optical system are independent of each other. By providing the above-mentioned angle adjustment function for setting the adjustment amount, a stereoscopic image projection adapter device having a screen enlargement function in the horizontal direction, which can independently set the angle adjustment of the convergence angle and the zoom angle of view, has been realized. .

  At the same time, as an optical system using a lens without using a mirror for optical axis refraction, a stereoscopic screen projection adapter that enables optical axis refraction by rotating the eyepiece cylindrical convex lens of the optical system along the cylindrical circle surface has been realized. .

  Furthermore, in order to apply the stereoscopic screen optical system of the present invention to a stereoscopic image input apparatus that inputs and captures a stereoscopic image as it is, here, as in the case of the projector projection adapter, an objective cylindrical concave lens and an eyepiece cylindrical convex lens are used. In addition to introducing a pair of objective and eyepiece mirrors for refraction of the optical axis to the base, the mirror optical system of either the objective mirror or the eyepiece mirror has a plurality of independent adjustment functions. By introducing the angle adjustment function that can be set, a three-dimensional image companding input adapter device that can independently adjust a plurality of angles such as a convergence angle and a zoom angle of view has been realized.

  With the realization of the present invention, the display on a conventional general TV receiver can be performed without using a special dedicated stereoscopic TV receiver for a stereoscopic image system in which compression / decompression screens typified by existing stereoscopic TV broadcasting are arranged. By using the simple stereoscopic glasses of the present invention for the screen, it has become possible to enjoy stereoscopic TV broadcasting widely and easily as stereoscopic images. In addition, according to the present invention, it is possible to easily realize a stereoscopic image input / output device configured with a simple adapter for input / output of these compression / decompression screens. In addition to viewing, 3D home theater viewing with a normal projector, and further, with the adapter of the present invention, it is possible to shoot these 3D images with a normal video camera. It has become possible to disseminate images widely and easily.

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
Specifically, FIGS. 1 to 3 show an example of stereoscopic glasses using the lateral magnification mirror optical system of the present invention (FIG. 3 as a representative example), and FIGS. 4 to 7 show a stereoscopic vision using the lateral magnification lens optical system of the present invention. Examples of visual glasses (FIG. 7 as a representative example), FIGS. 8 to 9 show examples of stereoscopic glasses using the longitudinal compression optical system of the present invention, and FIGS. 11 to 15 show horizontal expansion of the present invention. An example of a projector stereoscopic projection adapter using an optical system (FIG. 12 as a representative example) is shown, and FIGS. 16 to 18 show an example of a camera stereoscopic input adapter using a lateral enlargement optical system of the present invention (FIG. 18 as a representative example). .

First, FIG. 1 shows a first embodiment of the lateral magnification mirror optical system stereoscopic glasses of the present invention.
This is a method of stereoscopically viewing each of the three-dimensional display screens that are compressed horizontally and arranged side by side, and that each screen is enlarged horizontally, and the two screens are further superimposed. First of all, it is conceivable to use a vertical cylindrical convex lens to extend only in the horizontal direction while keeping the vertical direction of the screen as it is, but this enlarges the screen horizontally, but the focal length in each direction is different. The screen is out of focus and the screen is blurred.
For this reason, in the present invention, the eyepieces 2a and 2b by the vertical axis cylindrical concave lens are set after the objective vertical axis cylindrical convex lenses 1a and 1b, respectively. Here, by adjusting the distance between the objective eyepiece lenses to the difference in focal length of both cylindrical lenses, the lateral focal length can be equivalently infinite in the same way as the longitudinal direction in this optical system. So that the focal lengths coincide with each other to form a so-called afocal optical system. Thereby, an optical system that can clearly obtain a screen enlarged only in the horizontal direction can be realized. Here, when the magnification ratio of the focal length of the objective lens to the eyepiece becomes the magnification of the screen, and the focal length of the objective lens is twice that of the eyepiece, the optical system is enlarged twice.

In addition, the horizontally expanded left and right screens are superimposed by combining mirrors in which the objective reflecting mirrors 13a and 13b and the eyepieces 14a and 14b as shown in FIG. This is possible by refraction of the optical axis horizontally by the horizontal rotation of the objective reflection mirrors 3a and 3b and the eyepiece reflection mirrors 4a and 4b.
Furthermore, in general, the display screen is such that both the left and right screens are displayed side by side, so in the left and right screens observed with the left and right eyes, the other screen portions on the adjacent sides of each screen are considered as unnecessary parts. It will be observed at the same time. For this reason, by setting the shielding plates 6a and 6b arranged in the direction parallel to the side, which shields the other side screen portion at the adjacent side in the optical system of each screen in the observation optical system. Unnecessary parts can be shielded. The front and rear positions of the shielding plate may be anywhere as long as they are in the optical system. However, in the optical system, focus adjustment from the eye is easy, and the outermost part farthest from the eye position is desirable in order to reduce blurring of the shielding boundary portion. . This shielding plate has a variable length in the lateral direction, and can be moved left and right to adjust the shielding amount for adjusting the shielding part. Furthermore, by fixing one shielding plate and making only the other shielding plate variable, first fix the direction of observation for one screen according to the fixed shielding plate, and then fix the shielding plate for the other screen. By moving and adjusting the shielding amount, it is possible to simplify the adjustment operation of the shielding amount to only one side. This is exactly the same in the following embodiments, and there are cases where the explanation is omitted or the illustration is not shown again, but it is used in the optical system in the same way. It is possible.

Next, FIG. 2 shows a second embodiment of the lateral magnification mirror optical system stereoscopic glasses of the present invention.
Here, as shown in FIG. 2, in place of the vertical cylindrical objective convex lenses 1a and 1b and the reflecting mirrors 3a and 3b in FIG. 1, the vertical cylindrical objective concave mirrors 21a and 21b are used, and the vertical cylindrical eyepiece concave lenses 2a and 2b are used. In addition, the vertical cylindrical eyepiece convex mirrors 28a and 28b are introduced in place of the reflecting mirrors 4a and 4b, and the objective and eyepiece mirrors are configured so that the distance between them is the difference in focal length between the cylindrical mirrors. As a result, an optical system that expands the screen in the horizontal direction using only the mirror optical system was realized. This is focused on the fact that in the case of a vertical cylindrical mirror, the optical axis rotates in the horizontal direction without any distortion. In this case, the refraction of the optical axis can be realized by rotating the objective mirrors 27a and 27b or the eyepiece mirrors 28a and 28b in the horizontal direction in the same manner as the reflection mirror in FIG. The shielding plate is set outside the objective mirror.
In addition, in order to suppress the distortion of the image with the curved mirror, as in this case, the use of an aspheric surface (non-circular surface) for correcting distortion as a cylindrical surface, or a cancellation effect due to the combination of a convex surface and a concave surface, or Naturally, the use of an off-axis paraboloid is possible.

FIG. 3 shows a third embodiment as a representative example of the lateral magnification mirror optical system stereoscopic glasses of the present invention.
Here, unlike the conventional general optical system configuration method in which the left and right optical axes are symmetrically centered, the mirror optical systems 37a, 38a and 37b, 38b, which are a pair of objective and eyepiece, all have the same optical axis refraction. It is set according to the direction. Therefore, equivalently, the left and right optical systems are configured by arranging two identical ones. This is because in stereoscopic glasses that are stereoscopically viewed with both eyes, the right and left eyepiece mirrors are always set horizontally apart by the distance between the eyes. As shown in FIG. 3, the left and right optical systems can be configured by aligning the refractions of the optical axes in the same direction instead of facing each other as is conventional. . Further, the reflection of the optical axis in the lateral direction may be a right angle, but if the two optical systems are arranged side by side, the left and right optical axes may be overlapped in the front-rear direction as shown in the example of FIG. Since it becomes possible, it becomes possible to arrange both more closely.
In this case, in the objective and eyepiece mirror optical systems, when forming a mirror curved surface that generates a horizontally enlarged screen, the distortion and magnitude of the optical system differ depending on the location of the mirror curved surface, resulting in uneven distribution. However, if it is configured to refract the optical axis, which is common in the past, centered symmetrically, the position of this distortion will be on the opposite side of the screen that is symmetrical with each other on the left and right screens. When the two screens are superposed, the position where the distortion occurs is shifted to a position different from each other, and in addition to the distortion of the screen, the distortion of the screen is further enlarged.
Therefore, by adopting the mirror configuration shown in FIG. 3, the objective and eyepiece mirrors can be used at the same position for the left and right screens in the left and right optical systems. The position where distortion occurs on the screen expanded horizontally through the system can be the same on the left and right screens. This makes it possible to avoid the displacement of the distortion position at the time of the left and right screen overlay, which was unavoidable with the conventional mirror configuration when viewing in the left and right superimposed stereoscopic view, and it is very easy to see without the displacement of the left and right screens. It became possible to realize.
Note that the distance between the objective eyepiece mirrors is set to the difference between the focal lengths in order to make the equivalent focal length of this optical system infinite, so this is a guideline for determining the lateral width of each optical system. This can be realized by setting the focal length value so that the difference value is the distance between the eyes (about 7 cm) or less. This is possible because the ratio of the two that determines the screen magnification of the optical system must be kept constant, but the focal length itself can be set to be short independently.
Also in this case, the left and right screens can be superimposed by rotating the objective mirrors 37a and 37b or the eyepiece mirrors 38a and 38b in the horizontal direction. Further, in order to shield other screen unnecessary portions protruding from the border adjacent portions of both screens on both the left and right screens, shielding plates 36a and 36b whose lengths are laterally variable outside the objective lens between both optical systems. Is set.
The arrangement in which the refractive directions of the left and right screen optical systems are aligned is particularly effective for the mirror optical system described above, but is not limited to this, and an optical system in which a lens and a reflective mirror are combined as in the case of FIG. This is also possible in the same way.
Although the above describes the horizontal arrangement three-dimensional screen configuration in which both the left and right three-dimensional screens are compressed in the left and right directions, similarly, the horizontal arrangement in the vertical arrangement three-dimensional screen configuration in which both the left and right screens are compressed in the vertical direction is also arranged vertically. Therefore, this is realized by rotating the left and right optical systems of the lateral magnification mirror optical system by 90 ° with respect to the left and right eyepiece optical axes. The mutual relationship between the horizontal array and the vertical array is similarly applied in the following embodiments.

Next, FIG. 4 shows a first embodiment of the lateral magnification lens optical system stereoscopic glasses of the present invention.
This is a case where the stereoscopic glasses are configured only with lenses. Therefore, a prism is used for optical axis refraction for superimposing the screens. That is, it can be realized by setting the refractive prisms 45a and 45b between the objective eyepiece lenses 41a and 42a and 41b and 42b in the left and right objective eyepiece optical systems as shown in FIG. However, when the size of the stereoscopic display screen in the present invention and the distance to the glasses for stereoscopic viewing change, the focus restriction of the distance disappears due to the adoption of the afocal optical system, but the visible size, that is, the angle of view changes. On the other hand, with a fixed prism, the refraction angle is fixed and fixed. On the other hand, in the case of conventional stereoscopic glasses using the prisms 15a and 15b and the magnifying glass lenses 12a and 12b as shown in FIG. 10B, the output screen of the magnifying glass is originally a lens clear vision distance that is a fixed distance. In order to see, the refraction angle was constant and good. For this reason, the present invention introduces a prism in which the refraction angle is set slightly larger than the necessary refraction angle, specifically, the maximum field angle to be observed is determined and the prism refraction angle is set to this maximum field angle. Thus, the left and right screens that have passed through this prism are screens that are just overlaid from the screens that are arranged on the outside, or on the other hand, are shifted to the inside. On the other hand, the human eye can be moved inward in the horizontal direction (the direction opposite to the above refraction angle). The angle adjustment function (cross-eye movement) enables variable adjustment of the angle of view.
In this configuration, the optical system does not require a reflective optical system and the optical axis is straight, and the magnification of the screen is determined by the ratio of the focal length of the objective eyepiece, so the focal length of both lenses is set short. Therefore, the optical system itself can be shortened and miniaturized. Also in this case, the shielding plates 46a and 46b that shield unnecessary portions of the screen are set on the outermost side between the left and right optical systems.

Further, in the stereoscopic glasses of the present invention, attention is paid to the fact that the lens system is a cylindrical lens, and a device for performing the horizontal refraction operation of the optical axis more easily by using this is added.
That is, as shown in FIG. 5, attention is first paid to the fact that a cylindrical lens can simultaneously operate as a prism.
First, FIGS. 5A and 5B show plano-convex and plano-concave cylindrical lenses. Here, for example, the plano-convex cylindrical convex lens 50a of FIG. First, consider the case where this cylindrical convex lens is rotated by an angle θ in the direction of the arrow along the cylindrical surface (and thus around the center point of the cylindrical circle separated by radius r along the optical axis). Since it reaches the position indicated by the thick dotted line and rotates only in the horizontal direction, when viewed from the position of the optical axis, there is no change in the cylindrical surface due to the rotation, and the back plane portion is inclined in the rotational direction by an angle θ. That is, when viewing with a fixed viewpoint, it is equivalent to adding a prism with an angle θ equivalently by rotating the lens by θ. Therefore, in this cylindrical convex lens, the optical axis is viewed from a fixed viewpoint. This is refracted from the original solid line by an amount corresponding to the prism of this angle θ to become a dotted line. That is, by continuously rotating the cylindrical lens along the cylindrical surface, the refraction of the optical axis corresponding to the variable angle prism corresponding to the rotation angle can be continuously generated without adding any distortion to the optical system. In the optical system of the present invention, this is used as a prism.
Even if the center of rotation deviates before and after the radius, if the degree of deviation increases, the amount of refraction of the prism due to rotation decreases and the rotational component of the lens itself increases, so the refraction angle seen at the position of the optical axis decreases, and the optical axis The prism refraction effect can be used as it decreases as the center of rotation deviates from the radius. For example, if the center of rotation approaches the lens itself, the amount of rotation of the lens increases and distortion increases slightly. On the other hand, if the center of rotation is further away from the lens surface radius, the amount of parallel movement of the lens at the optical axis position increases, so that the lens portion through which the optical axis passes is greatly displaced, resulting in a large increase in distortion of the lens.

  Similarly, the cylindrical concave lens 50b shown in FIG. 5B is also rotated along the cylindrical surface with the radius r as shown by a thick dotted line, thereby forming a prism having an angle corresponding to the rotation angle θ. The refraction of the optical axis can be obtained. However, as shown in the figure, when rotating along this cylindrical concave surface, the flat surface portion is inclined in the opposite direction as opposed to the convex surface, so that the prism angle generated thereby is in the opposite direction, and the optical axis of Refraction is opposite to that of a convex lens as indicated by the dotted line. Therefore, if they are simultaneously rotated in the same direction, the effect of the prism refraction is canceled out and thus greatly reduced.

Further, FIG. 5 (c) shows a configuration in which the prism refraction angle is made larger when the both convex and concave cylindrical lenses 50a and 50b are used. That is, as shown in this figure, if one of the concave lenses 50b, for example, is reversed and the concave surface is on the outer side (object side), the rotation center P is set on the optical axis between the two lenses and rotated. As a result, this concave lens rotates in the opposite direction to the upper convex lens sandwiching the center point, so the prism refraction direction of both lenses coincides, and the optical system that doubles the prism refraction effect of both lenses at once And the optical axis is greatly refracted as shown by a dotted line. Ideally, the distance from the center point to each lens curved surface is the radii r1 and r2 of each curved surface, but as described above, even if this is a value deviating from the radius r, the refraction angle is a little. It can be used with less impact. The ratio of the focal lengths of both lenses is specified by the magnification ratio and is constant, but the focal length itself can be changed and set. By adjusting this focal length, this center point is brought close to the best condition. I can do it.
In addition, the above argument is not a plano-convex plano-concave lens, but if it is a combination of plano-convex and plano-concave lenses, even if it is a plano-concave lens, it will be offset by the amount of the plano-concave lens having the opposite refractive characteristics to the plano-convex lens. A refraction effect is obtained.

Next, FIG. 6 shows a second embodiment of the lateral magnification lens optical system stereoscopic glasses of the present invention to which this configuration is applied.
That is, FIG. 6 shows a stereoscopic eyeglass optical system constituted by objective convex and ocular concave cylindrical lenses 61a, 61b and 62a, 62b. Cylindrical convex lenses that are convex on the objective side are mutually outward as shown by an angle θ. By rotating, the optical axis is refracted outward from the solid line to the dotted line.
Here, as an example, a case where the center point P of the objective lens rotation is set to the position of the eyepiece concave lens is described. In this case, while the objective convex lens rotates, the eyepiece lens is fixed. However, considering the case where the eyepiece concave lens and the objective convex lens are combined and fixed, this is configured to rotate around the position of the eyepiece concave lens. For example, in this case, the ocular concave lens itself rotates by an angle θ, but the function is the same as when only the original objective convex lens rotates.
Similarly, the eyepiece cylindrical concave lens in FIG. 6 can be rotated along its radius. In this case, the optical axis can be refracted outward by rotating inward, and both lenses can be rotated separately.

Further, FIG. 7 shows a third embodiment as a representative example of the lateral magnification lens optical system stereoscopic glasses of the present invention.
This is for a stereoscopic eyeglass optical system composed of objective cylindrical convex lenses 71a and 71b that are convex on the objective side and eyepiece cylindrical concave lenses 72a and 72b that are concave on the objective side, between the objective lens and the eyepiece on its optical axis. This is configured to rotate by θ around the point P. By doing this, the rotational directions of the convex and concave lenses are opposite to each other, so that the refraction of the optical axis by this rotation becomes the same direction, and the refraction is added to obtain a larger refraction angle as shown by the dotted line. . Note that the conditions for making both lenses rotate exactly along the cylindrical surface vary depending on the magnification of the optical system, the refractive index of the lens, etc., but as described above, these do not match exactly. However, if some distortion is taken into consideration, this method can be effectively used for refraction of the optical axis even when this condition is not met.
According to this configuration, the left and right optical systems are rotated in the horizontal direction to superimpose both screens. This is because when the left and right stereoscopic screen is observed with the stereoscopic glasses, the screen is superimposed. This is done by directing the eyeglass optical system inward or outward, so that eyeglasses can be realized that have a natural operation in terms of use of screen overlay and stereoscopic work.
These lens optical system stereoscopic glasses of the present invention are the same as the case of the above mirror optical system glasses for stereoscopic viewing of the screen configuration of the vertical compression vertical arrangement in addition to the above-mentioned horizontal compression horizontal arrangement. It is applied as it is. That is, the left and right optical systems of optical axis refraction by the prism operation of this cylindrical lens can be handled as they are by rotating 90 degrees about each eyepiece optical axis.

On the other hand, the left and right arrayed stereoscopic screens compressed in the horizontal direction can be stereoscopically viewed by superimposing screens obtained by vertically compressing these screens.
FIG. 8 shows a first embodiment of the vertical compression optical system stereoscopic glasses of the present invention that stereoscopically displays the screen by compressing it vertically.
That is, in FIG. 8, the left and right screens that are horizontally compressed and vertically elongated are compressed vertically so that the objective lenses 81a and 81b using the horizontal axis (horizontal axis) cylindrical concave lens and the eyepiece using the horizontal axis (horizontal axis) cylindrical convex lens are used. By setting the distance between the lenses 82a and 82b to be substantially equivalent to the difference between the focal lengths of the two lenses, a common focal length optical system having the same infinity focal length in both the vertical and horizontal directions by making the optical system afocal in the vertical direction. As a system, it is possible to obtain a clear image even on a vertically compressed screen.
In addition, the superposition of the optical axes in the horizontal direction of both the left and right screens is performed by setting horizontal refracting prisms 85a and 85b on the optical axes of the left and right optical systems. This was possible in the horizontal expansion type optical system using the vertical axis cylindrical lens for refraction of the optical axis in the horizontal direction. In this case, however, the lens is a horizontal axis cylindrical lens. This is because, since it is a curved surface, it becomes the distortion of the screen in the horizontal direction, and cannot be used for refraction in the horizontal direction.
Note that companding of a stereoscopic screen (vertical array stereoscopic screen) in which the left and right screens are arranged vertically in the vertical direction can be dealt with by rotating the stereoscopic glasses using the lateral magnification lens optical system as it is by 90 °. . In other words, refraction of the optical axis using the horizontal axis cylindrical lens of the present invention enables stereoscopic viewing, and in this case, it is not necessary to use a horizontal prism again.

Next, FIG. 9 shows a second embodiment of stereoscopic glasses using the longitudinal compression optical system of the present invention.
This is for the longitudinal compression glasses comprising the objective concave and eyepiece convex lens optical system by the horizontal cylindrical lens in FIG. 8, and the horizontal cylindrical objective convex mirrors 91a and 91b and the eyepiece concave mirror that translate the optical axis of the lens optical system, respectively. FIG. 9B is a side view, which is replaced by 92a and 92b. However, both mirror surfaces have a curved surface in the vertical direction and oblique reflection in the horizontal direction causes the mirror curved surface to appear as a distorted curved surface in the horizontal direction, resulting in distortion in the reflected image. This is applied to the lateral refraction of the optical axis. Can not. For this reason, this optical system (in this case, the outer eyepiece) has the same function by adding prisms 95a and 95b to refract the optical axis in the lateral direction and superimpose the three-dimensional images. Is realized.
Also in this case, as in FIG. 8, in the case of a vertically arranged stereoscopic screen, it can be handled by rotating the above-mentioned lateral magnification mirror optical system stereoscopic glasses as they are by 90 °. Therefore, by applying the present invention, this horizontal axis cylindrical Refraction of the optical axis is obtained by the mirror, and stereoscopic viewing is possible in the same manner.

  On the other hand, as a method of stereoscopic viewing, which is an output of stereoscopic video, the left and right screens are differently passed through different polarizing filters in the projector in addition to the stereoscopic glasses method in which the display left and right screens are superimposed as described above. There is a method of superimposing and projecting as a polarization screen and stereoscopically viewing it with polarized glasses. Conventionally, as shown in FIG. 10 (c), the screens arranged on the left and right are divided into polarizing screens by different polarizing filters Fa and Fb, respectively, and divided by the eyepiece mirrors 104a and 104b for objective projection. The mirrors 103a and 103b are projected onto the screen surface as an output screen SC, which is stereoscopically viewed with polarized glasses.

On the other hand, the present invention realizes a projector projection optical system that expands a screen in the horizontal direction as a projected stereoscopic screen, for example, for a stereoscopic screen configuration in which left and right screens are compressed in the horizontal direction and arranged in one screen. In other words, the stereoscopic glasses described above have the function of observing the displayed left and right compressed screens in the horizontal direction. In this case, the projection screen of the projector, which is the output screen, is expanded in the horizontal direction on the screen surface. A function to project is required. For this reason, in the present invention, the projector output light beam is first divided into two parts for the left and right screens, and each screen light beam is imaged through a cylindrical convex lens, and this image is enlarged by a cylindrical concave lens and formed on a far screen. The configuration to be realized was realized.
Furthermore, in the optical system of the present invention, the focal length of the objective cylindrical concave lens is adjusted to the focal length position behind the eyepiece cylindrical convex lens, that is, the objective concave lens is set apart from the eyepiece convex lens by the difference between the focal lengths of the two. It is configured to do. As a result, this optical system is equivalent to a so-called afocal optical system with an infinite focal length that can realize a screen enlargement function independent of the projection image optical system of the projector. As a result, a magnifying optical system that enlarges and forms an image in the horizontal direction without being restricted by the distance from the projector projection lens is realized, and this is set as an optical system independent of the projector, so that it can be installed in front of the projector. Can be configured as an adapter.

Specifically, FIG. 11 shows a first embodiment of the lateral magnification optical system projector stereoscopic projection adapter of the present invention.
That is, the eyepiece (projector PJ side) vertical axis cylindrical convex lenses 112a and 112b that pass through polarizing filters Fa and Fb having different polarities as an optical system for enlarging and projecting the screen horizontally, and objectives corresponding to this (projection screen side) Vertical axis cylindrical concave lenses 111a and 111b are placed, and eyepiece mirrors 114a and 114b that divide the screen between them and objective mirrors 113a and 113b that direct the optical axis toward the projection plane are set.
Here, if the focal length of the eyepiece cylindrical convex lenses 112a and 112b is f2, and the focal length of the objective cylindrical concave lenses 111a and 111b is f1, the magnification m in the horizontal direction of the stereoscopically projected image is f2 / f1. Therefore, by setting the distance between the two lenses as the difference between the absolute values of the focal lengths of the two lenses, it is possible to obtain a projected image that is laterally enlarged by the set magnification m.
In addition, the eyepiece mirrors 114a and 114b may be configured in a V shape that is in contact with each other at the center as shown in the figure. However, by setting both of them to be shifted back and forth along the output optical axis, Since the screen boundary line is defined by the mirror located closer, it is possible to clearly set the boundary portion without causing any marginal part caused by contacting both mirrors, and the two screens can be separated efficiently.
Further, on the outer side between the left and right objective lenses, shield plates 116a and 116b having variable widths for shielding unnecessary portions of the boundary area on the left and right angle screens are set.

In the case of stereoscopic glasses, in an optical system in which the optical axis is adjusted by a reflecting mirror, the stereoscopic image is adjusted by superimposing the observation screen, that is, adjusting the convergence angle that is the intersection angle of the optical axes of the left and right optical systems. It was only good. However, in the case of stereoscopic projection using the projector projection method, in addition to adjusting the crossing angle (convergence angle) of the two screens that project the screens arranged side by side on the screen surface, the projected image for the zoom operation of the projector is displayed. Corner adjustment is required. That is, the general projector used here has a zoom operation function that changes the focal length of the projection lens in many cases. Therefore, the stereoscopic adapter to be attached to this projector also supports the change in the angle of view due to this zoom operation. An angle of view adjustment function is required.
However, the two types of adjustment of the convergence angle and the zoom projection screen angle of view are different from each other and are set independently. For both objective eyepiece mirrors, optical axis refraction can be adjusted with either or both, but for example, when adjusting the angle with only one eyepiece mirror, two adjustment conditions overlap, so adjust once. However, if an attempt is made to re-adjust, the adjustment needs to be reset from zero according to both conditions each time, and complicated adjustment is always required. Therefore, in general, it has been generally adjusted and fixed as one condition.

One method for solving this problem is that the convergence angle adjustment is first performed by, for example, an objective mirror, and the zoom field angle adjustment is performed by adjusting the angle by the other eyepiece mirror. It is shared by mirrors and enables independent adjustment of each. In this case, however, the objective eyepiece mirrors must each have an angle adjustment function.
In the present invention, as a simpler technique, a technique that enables these two adjustments using only one mirror (in this example, an eyepiece mirror) is introduced. In other words, a single mirror that adjusts the angle of view by changing the reflection angle is provided with an angle adjustment function that can set a plurality of independent angle adjustment amounts, thereby independently adjusting each of the necessary adjustment factors. Then, the mirror angle adjusting means that can simultaneously adjust a plurality of adjustment factors with one mirror is realized by using the sum of these adjustment amounts as the mirror angle adjustment amount. For example, by configuring the angle adjustment of one mirror as the first and second angle adjustment functions that can be set independently, the zoom angle of view is the first adjustment for the two factors of zoom angle of view and convergence angle. By adjusting the angle of convergence with the second adjustment function, it is possible to adjust the angle of two independent factors in one mirror.

Here, a second embodiment will be described as a representative example of the lateral enlargement optical system projector projection adapter of the present invention with reference to FIG.
Specifically, the angle adjustment function of the objective eyepiece mirror, which is the center of the mirror, will be described with reference to FIG. This is basically the same configuration as the previous FIG. 11, and here, for the purpose of explanation, only the objective mirror and eyepiece mirror portions in the adapter configuration are extracted and shown.
First, the projection screen on the projector PJ side is turned into a wide-angle screen by the zoom operation, and the optical axis is projected with Xwa and Xwb indicated by a solid line, and this is a solid line by eyepiece mirrors 124a and 124b set to S1 with a convergence angle of zero as a reference. With respect to the wide-angle screen parallel projection optical axes Xw1a and Xw1b, the wide-angle screen parallel projection light flux reflected and projected as a reference, the optical axis of the projector projection screen will shift to the long-focus telescopic narrow-angle screen light flux indicated by the chain lines Xta and Xtb. Watch the case. In this case, the eyepiece mirrors 124a and 124b are adjusted by the first adjustment function from the state S1 indicated by the solid line to the telephoto screen state S2 at this time, as shown by the chain line. As a result, the reflected optical axis of the narrow-angle screen indicated by the chain line is parallel to the previous solid-line optical axis as the telescopic narrow-angle screen parallel projection optical axes Xt1a and Xt1b and travels toward the objective mirror at the same angle. That is, the eyepiece mirror is slightly tilted so that the chain line optical axis is parallel to the solid line optical axis, and set to the position S2 of the chain line. As a result, the chain line optical axis reflected forward by the objective mirrors 123a and 123b becomes the left and right parallel optical axes with the same convergence angle zero while maintaining the same center position of the screen as the solid line optical axis.
The mirror adjustment angle for zoom angle adjustment is preset and held as it is, and is stored independently of the convergence angle adjustment.

On the other hand, we will look at the setting of the convergence angle separately. First, consider a case where the projection image on the projector PJ side is a wide-angle screen and this optical axis is reflected forward by the objective mirrors 123a and 123b and the convergence angle that is parallel to the left and right is zero. As indicated by the optical axes Xw1a and Xw1b, in order to set a constant convergence angle α from this state, the convergence angle of the dotted line is set by slightly raising the eyepiece mirror from the solid state with M as the second adjustment function. Adjustment is made to state S3. As a result, the actual left and right optical axes are set so as to be reflected at a slightly acute angle as indicated by dotted lines Xw2a and Xw2b, and to be respectively an angle 1 / 2α in the direction of the convergence angle α slightly inside the solid line through the objective mirror.
It should be noted that the mirror adjustment angle for adjusting the convergence angle is preset and held as it is, and therefore the angle is held as it is when adjusting the mirror angle for adjusting the other angle of view.

  Next, in the above description, the zoom field angle is adjusted by shifting the zoom screen from the wide angle to the telephoto narrow angle screen by the first adjustment function in the original wide-angle screen state, and the mirror field angle is indicated by a chain line. Consider the case where the convergence angle is further adjusted to the preset state set in the state of S2. To adjust the convergence angle, it is necessary to adjust the angle of the eyepiece mirror with respect to the optical axis of the screen. For this adjustment, the angle of view of the screen is switched from the convergence angle zero to the convergence angle α by the second adjustment function. It is necessary to set an angle with a slight inclination as in the case of the above. That is, it corresponds to switching from S1 to S3. However, in this case, since the angle for adjusting the convergence angle can be separately set and stored in this eyepiece mirror, the actually set angle is the angle at which the zoom angle adjustment is made from S1 to S2. The adjustment value, that is, an angle corresponding to the switching from S1 to S3 is added. Accordingly, the angle setting of the eyepiece mirrors 124a and 124b is changed to the state of S4 indicated by the rough dotted line to which the convergence angle adjustment is added from the position of S2 indicated by the chain line in which only the zoom angle adjustment has been performed. At the angle α, the optical axis of the zoom telephoto field angle screen becomes Xt2a and Xt2b indicated by rough dotted lines. That is, the function of the present invention makes it possible to realize a stereoscopic projector adapter having an angle adjustment optical system capable of independently adjusting the convergence angle and the zoom angle of view for only one eyepiece mirror, for example.

A specific configuration method for adjusting and setting a plurality of mirror angles independently for one mirror is obtained by dividing the plurality of mirror angles into a plurality if the adjustment is performed by changing the angle or changing the length. I can do it. For example, as an example of adjusting the angle by changing the length, as shown in FIG. 13, an eyepiece in which the front and rear length movements are obtained by the rotation of a screw, and thereby the joint M at the center of one end is fixed. The angle of each mirror can be changed and adjusted by pushing and pulling the joints Ma and Mb at the other ends of the mirrors 134a and 134b. In this case, it can be realized by separating the length portion to be adjusted into the A portion and the B portion, which are constituted by separate screws, for example. As an example, in FIG. 13 (a), the screws A and B are rotated and the lengths of the fixing portions are individually moved as Aa and Ba (the end T is fixed), and in FIG. 13 (b), the screws A and B are rotated. By individually changing the height of the pantograph as Ab and Bb (the end T is fixed), the length of the variable length part of the screws A and B is adjusted separately with respect to the fixed part, and the sum A + B is The length and the amount of change provide an independent angle adjustment mechanism for the total overall angle.
Here, when the change in length is used to adjust the angle, strictly speaking, the change in length is not exactly proportional to the change in angle, but when the mirror angle that changes like this mirror optical system is small. It can be regarded as proportional. In order to set it more strictly, a slight adjustment may be made to the length to be adjusted corresponding to the angle value.

Further, FIG. 14 shows a third embodiment of the lateral magnification optical system projector stereoscopic projection adapter of the present invention.
Here, as in the case of the above-described stereoscopic glasses, the eyepiece cylindrical convex lenses 112a and 112b and the reflection mirrors 114a and 114b and the objective cylindrical concave lenses 111a and 111b and the reflection mirrors 113a and 113b in FIG. By using the cylindrical concave mirrors 148a and 148b and the objective cylindrical convex mirrors 147a and 147b, and setting the distance between the mirrors to the difference in focal length, a projection mirror optical system having a simple configuration and no chromatic aberration is realized.
In addition, in the case of the cylindrical mirror of FIG. 14 as well, in the same way as in the case of the plane mirror, it is possible to cope with field angle adjustment by providing the eyepiece mirror with a field angle adjustment function capable of setting a plurality of independent adjustment amounts. .
Here, the refraction of the optical axis for superimposing both screens can be realized by rotating and moving these mirrors in the horizontal direction. In this case, the cylindrical mirror surface also has an optical canceling effect due to the combination of the convex mirror and concave mirror paired in this case in order to reduce the distortion of the screen caused by the oblique reflection on the cylindrical mirror surface. In addition, if necessary, the mirror curved surface can be corrected to a mirror curved surface by introducing an aspheric surface (non-circular surface) or an off-axis paraboloid. Further, in the projection screen, in particular, in order to shield the projection of unnecessary portions in the boundary area between the adjacent left and right screens, a variable or fixed shielding plate (for example, 146a, 146b in FIG. Can be set.

On the other hand, FIG. 15 shows an embodiment of the lateral magnification lens optical system projector stereoscopic projection adapter of the present invention which does not use a mirror.
Here, the eyepiece cylindrical convex lenses 152a and 152b are rotated substantially along the respective lens curved surfaces to generate a prism refraction angle equivalently with respect to the optical axis to correspond to a change in the zoom field angle.
Specifically, for example, the eyepiece lens is located at the position indicated by the solid line with respect to the wide-angle-side screen indicated by the solid line in FIG. 15, but the telephoto side screen at which the angle of view is narrowed as indicated by the dotted line. In this case, the eyepiece cylindrical convex lens is rotated in the direction of the outer arrow along the cylindrical surface as indicated by the dotted line, thereby setting the prism angle to the outside and reducing the equivalent prism angle to the inside. By reducing the refraction angle, it is possible to cope with a narrowing angle of view. That is, with respect to the change in the angle of view due to the zoom operation in the projector PJ, the adjustment is realized by the change in the refractive angle of the optical axis due to the rotation of the eyepiece cylindrical convex lens. In this case, if the biconvex lens is moved away from the center by rotating the lens outward, a space 15d to be blocked is formed between the filters Fa and Fb. Since all the angle-of-view components are included, the amount of this space is a loss of the entire amount of light, but does not cause a partial loss of the screen. Accordingly, in this case, a projector optical system in which the output light beam during telephoto zooming is not reduced as shown in this figure is advantageous, but this can also be dealt with by separating the distance between the projector and the adapter during telephoto. Further, since the light beams on both the left and right screens overlap with each other in the objective cylindrical concave lens, this can be replaced with one lens 151, and an overall compact adapter can be realized.
In addition, the area where the light beams of the left and right screens to be projected are separated is limited to the very vicinity of the eyepiece cylindrical convex lens and has a thin width toward the front. The masking shielding plate 156 is realized by extending forward from between the central ocular biconvex lenses and adjusting the extending length to adjust the shielding amount.
The horizontal magnification optical system projector stereoscopic projection adapter of the present invention corresponds to the horizontal arrangement stereoscopic screen configuration, but is also applied to the vertical arrangement stereoscopic screen configuration as it is. That is, by rotating these optical systems 90 ° about the projector projection optical axis, it is possible to cope with a vertically compressed and vertically arranged 3D screen configuration in which the 3D left and right screens are compressed in the vertical direction and arranged vertically.

Furthermore, the image composition method of the present invention is also applied as a stereoscopic image input method. In other words, as a method of inputting a stereoscopic image to a method in which the left and right screens are arranged side by side, an optical system that forms a three-dimensional screen in which the left and right screens are collected in a center by a pair mirror and arranged horizontally is used as an adapter in front of the camera. The method of installing and inputting in the is used.
On the other hand, FIG. 16 shows a first embodiment of the camera stereoscopic input adapter using the lateral magnification optical system of the present invention.
That is, in the present invention, in order to realize the function of horizontally compressing the input image with an afocal vertical cylindrical cylindrical concave and convex lens optical system, first the objective mirrors 163a and 163b are added in the configuration of FIG. The objective cylindrical concave lenses 161a and 161b are introduced, and the cylindrical convex lenses 162a and 162b are placed behind the eyepiece mirrors 164a and 164b to obtain an input screen compressed in the horizontal direction.
Further, the distance between the two lenses is set to a value corresponding to the difference in focal length between the two lenses in order to constitute an afocal optical system. Here, since the eyepieces 162a and 162b are arranged side by side, it can be constituted by one lens. In FIG. 16, by using the left and right halves of one cylindrical convex lens, each of 162a and 162b is realized. ing. Also in this case, the eyepiece mirrors 164a and 164b may be formed in a V-shape that is in contact with each other at the center as in the case of the conventional eyepiece mirror. However, the eyepiece mirrors 164a and 164b may be configured to be shifted back and forth along the output optical axis. Since the screen boundary line in the center of the screen is defined by the mirrors located closer to each other, it is possible to clearly set the boundary part without causing any marginal part caused by contacting both mirrors.

Next, FIG. 17 shows a second embodiment of the lateral magnification optical camera stereoscopic input adapter of the present invention.
Since the objective concave lens and the objective mirror and the eyepiece convex lens and the eyepiece mirror can be respectively corresponded to the objective cylindrical convex mirror and the eyepiece cylindrical concave mirror, this is a simple configuration of 177a, 177b and 178a, 178b as shown in FIG. Accordingly, a simpler stereoscopic image input adapter can be realized. The left and right eyepiece mirrors may be in contact with each other or in the form of a back-and-forth slide as in the case of FIG. 16, but here, they are shifted back and forth along the output optical axis, and one 178b is close to the camera CA. The case where it is set to is shown.
In these cases, the distance between the left and right input screens is set as the stereoscopic viewpoint interval, but the distance between the pair of convex and concave lenses needs to be the difference in the focal length of both lenses. Matching can be achieved by adjusting the position of reflecting the axis or by setting the focal length itself to be longer or shorter while keeping the ratio of the focal lengths of both lenses that determine the magnification ratio constant.

FIG. 18 shows a third embodiment as a representative example of the lateral magnification optical system camera stereoscopic input adapter of the present invention having a variable angle corresponding to the adjustment of the zoom input field angle and the convergence angle of the camera.
That is, in the case of a horizontally arranged stereoscopic screen camera, it is necessary to change the center optical axes of the left and right stereoscopic screens in accordance with the change of the input angle of view in order to cope with the stereoscopic zoom input of the camera in addition to the adjustment of the convergence angle. . For this reason, in this case as well, an angle adjusting mirror having the same configuration as the mirror optical system for projecting the light beam shown in FIG. 12 can be set independently for the above two adjustments as an eyepiece mirror. This is realized by configuring the eyepiece mirrors 184a and 184b using an optical system.
In this case, when the three-dimensional left and right screens are input from the objective vertical axis cylindrical concave lenses 181a and 181b, the central optical axis is reflected by the fixed-angle objective mirrors 183a and 183b and concentrated at almost one place on the eyepiece mirrors 184a and 184b. It is configured to be.
First, based on the case where the left and right input screens are wide-angle input screens and are input as the wide-angle parallel input screen optical axes w1a and w1b that are parallel with zero convergence angle, the central optical axis is expressed as a light beam indicated by a solid line. This light beam is first reflected by the objective mirror and enters the eyepiece mirrors 184a and 184b set at an angle S1 also indicated by a solid line. The luminous flux is reflected by this eyepiece mirror and heads to the camera for inputting a stereoscopic image. Here, the eyepiece mirror is set at an angle in the state of S1 indicated by a solid line, and thereby the optical axis (solid line) of the inputted luminous flux is reflected. The angle toward the camera is adjusted to coincide with the wide-angle screen camera input optical axes (solid lines) wa and wb having a wide angle of view as the input angle of view of the camera. As a result, the input optical axis to the camera is input to the camera with a wide angle of view through the eyepiece vertical axis cylindrical convex lenses 182a and 182b as a wide-angle input screen as shown by a solid line.

Next, the case where the camera is set to the telephoto narrow angle input screen will be described. In this case, the narrow-angle parallel input screen optical axes t1a and t1b serving as the input screen are set to the objective lens in a state in which only the angle of view is narrowed at the telephoto position while maintaining the center of the screen as shown by the chain line. Entered. Furthermore, the optical axis reflected by the objective mirror enters the eyepiece mirror and is reflected again and enters the camera. The light beam incident on the eyepiece mirror while keeping the center optical axis of the screen at the center of the screen is indicated by the optical axis of the chain line. It is necessary to input to the camera CA as a screen with a narrow angle of view and close to the center optical axis of the camera. To match this, the eyepiece mirrors 184a and 184b are solid lines that are angle setting positions for the original wide-angle screen. From the state of S1, the mirror angle is set to the state of S2 with a slight inclination angle as shown by the chain line. As a result, the narrow-angle screen camera input optical axes ta and tb, which are input to the camera, are input as an image of the optical axis with a narrow angle of view as indicated by the chain beam and as it is close to the central axis of the camera. The zoom screen corresponding to the zoom angle of the camera is captured.

On the other hand, when setting the convergence angle α to the camera input, first, based on the optical axis of the wide angle screen with zero convergence angle shown by the solid line, the wide angle convergence angle input of the convergence angle α shown by the dotted line The screen optical axes w2a and w2b are incident on the objective lens, and after passing through the eyepiece mirror, the camera input screen needs to be matched with the wide-angle optical axes wa and wb having a solid convergence angle of zero. For this reason, the angle of view of the eyepiece mirrors 184a and 184b is set to the state of S3 indicated by the dotted line with the angle slightly raised by the convergence angle adjustment function independent of the zoom angle adjustment function. As a result, the convergence angle α input screen is reflected by the eyepiece mirror set in S3 and matched with the wide-angle screen camera input optical axes wa and wb of the camera input, so that the convergence angle α is adjusted and input to the camera. Will be done.

  Further, in the case of the optical axis indicated by the chain line that is a telephoto and narrow-angle screen, the zoom input is adjusted to the narrow-angle convergence angle input screen optical axes t2a and t2b, which is an input screen obtained by adding a convergence angle α to this. In order to achieve this, it is necessary to set the angle of the eyepiece mirror slightly as in the case of the wide angle. However, this change is equivalent to the angle moved from S1 to S3 previously set for the wide-angle screen, and this corresponds to the adjustment of the convergence angle set separately in the previous adjustment, so this is preset. If so, the eyepiece mirrors 184a and 184b are changed from the state S2 indicated by the chain line to the state S4 indicated by the rough dotted line. As a result, the input light flux of the convergence angle α narrow-angle screen of the optical axes t2a and t2b indicated by the rough dotted lines is reflected by the eyepiece mirror separately adjusted independently of the zoom angle of view and set to S4. After that, the convergence angle is adjusted by matching with the same narrow-angle screen camera input optical axes ta and tb as when the convergence angle is zero on the telephoto narrow-angle screen of the chain line. In these cases, the change in the set angle is small, so it can be considered that the change is proportional to the change in the length.

The 1st Example about the horizontal expansion mirror optical system stereoscopic glasses of this invention. The 2nd Example about the horizontal expansion mirror optical system stereoscopic vision glasses of this invention. Third embodiment representative of lateral magnification mirror optical system stereoscopic glasses of the present invention 1 is a first embodiment of a lateral magnification lens optical system according to the present invention. Explanatory drawing of optical axis refraction operation | movement of the cylindrical of this invention. 2 shows a second embodiment of the lateral magnification lens optical system of the present invention. 3 is a third exemplary embodiment representative of the lateral magnification lens optical system of the present invention. 1 shows a first embodiment of longitudinal compression optical system stereoscopic glasses according to the present invention. 2 shows a second embodiment of the longitudinal compression optical system stereoscopic glasses according to the present invention. Conventional examples of stereoscopic glasses and a stereoscopic projection system. 1 is a first embodiment of a lateral magnification optical system projector stereoscopic projection adapter according to the present invention; FIG. 5 is a second exemplary embodiment of the lateral magnification optical system projector stereoscopic projection adapter according to the present invention. FIG. The structural example of setting the mirror angle of this invention independently in multiple numbers. The 3rd Example of the horizontal expansion optical system projector stereo projection adapter of this invention. FIG. 4 is an embodiment of a projector stereoscopic projection adapter of the lateral magnification lens optical system of the present invention. FIG. 1 is a first embodiment of a camera stereoscopic input adapter using a laterally expanding optical system according to the present invention. FIG. 5 is a second embodiment of a camera stereoscopic input adapter using a lateral magnification optical system according to the present invention. FIG. The typical 3rd Example of the camera three-dimensional input adapter by the lateral expansion optical system of this invention.

Explanation of symbols

1a, 1b, 41a, 41b, 61a, 61b, 71a, 71b Objective vertical axis cylindrical convex lens 2a, 2b, 42a, 42b, 62a, 62b, 72a, 72b Eyepiece vertical axis cylindrical concave lens 3a, 3b, 113a, 113b, 123a, 123b, 163a, 163b, 183a, 183b Objective mirrors 4a, 4b, 114a, 114b, 124a, 124b, 164a, 164b, 184a, 184b Eyepiece mirrors 6a, 6b, 26a, 26b, 36a, 36b, 46a, 46b, 116a, 116b, 146a, 146b, 156 Shielding plates 12a, 12b Magnifying glass lenses 13a, 13b Objective reflectors 14a, 14b Eyepiece reflector 15d Shielding spaces 27a, 27b, 37a, 37b Objective vertical axis cylindrical concave mirrors 28a, 28b 37a, 37b Eyepiece vertical axis cylindrical convex mirrors 45a, 45b, 85a, 85b, 95a, 95b Refraction prisms 50a, 50b Cylindrical lenses 81a, 81b Objective horizontal axis cylindrical concave lenses 82a, 82b Eyepiece horizontal axis cylindrical convex lenses 91a, 91b Objective horizontal axis Cylindrical convex mirror 92a, 92b Eyepiece horizontal axis cylindrical concave mirror 111a, 111b, 151, 161a, 161b, 181a, 181b Objective vertical axis cylindrical concave lens 112a, 112b, 152a, 152b, 162a, 162b, 182a, 182b Eyepiece vertical axis cylindrical convex lens 134a, 134b Eyepiece mirrors 147a, 147b, 177a, 177b having a plurality of angle adjustment functions Objective vertical axis cylindrical convex mirror 14 a, 148b, 178a, 178b eyepiece vertical axis cylindrical concave mirror A, B the length adjustment screw Aa, Ab, Ba, length CA camera Fa to Bb adjustment, Fb polarizing filter
E Output screen L Left display screen M, Ma, Mb Joint P Center point PJ Projector R Right screen r, r1, r2 Cylindrical circle radius SC Three-dimensional output projection screen S1, S2, S3, S4 Eyepiece mirror angular position T Fixed end ta, tb Narrow-angle screen camera input optical axes t1a, t1b Narrow-angle parallel input screen optical axes t2a, t2b Narrow-angle convergence angle input screen optical axes wa, wb Wide-angle screen camera input optical axes w1a, w1b Wide-angle parallel input screen optical axes w2a , W2b Wide angle convergence angle input screen optical axis Xta, Xtb Telephoto narrow angle screen optical axis Xt1a, Xt1b Telephoto narrow angle screen parallel projection optical axis Xt2a, Xt2b Telephoto narrow angle screen convergence angle projection optical axis Xwa, Xwb Wide angle screen optical axis Xw1a, Xw1b Wide-angle screen parallel projection optical axis Xw2a, Xw2b Wide-angle screen convergence angle projection optical axis α convergence angle θ angle

Claims (14)

  An objective lens pair by a pair of vertical-axis cylindrical convex lenses that input left and right screens, a first mirror pair that can change the angle in the horizontal direction so that each input optical axis is directed to the center in the horizontal direction at substantially right angles, and further A second mirror pair that can change the angle in the horizontal direction so that the input optical axis faces the binocular position and is directed to the front at a right angle; and the focal length of both lenses of the objective eyepiece from the objective lens at the front position of the binocular Stereoscopic glasses having a screen magnification function in the horizontal direction, comprising a pair of eyepieces with a pair of vertical axis cylindrical concave lenses set to the distance of the difference.   A pair of vertical-axis cylindrical concave mirrors that input left and right screens and reflect them horizontally toward the center toward each other and reflect them at right angles to each other in a horizontal direction, and this optical axis toward the binocular position at the front. A pair of vertical cylindrical cylindrical mirrors that can be reflected in the horizontal direction, and the optical axis distance between the objective eyepiece mirrors is set to be substantially the difference between the focal lengths of the two mirrors. Stereoscopic glasses with a screen enlargement function.   An objective mirror with a vertical axis concave cylindrical mirror that reflects the input screen horizontally horizontally or diagonally rearward and horizontally, and further changes the angle in the horizontal direction that reflects this optical axis at a right angle toward the front binocular position. And an optical system in which the optical axis distance between the objective eyepiece mirrors is set to be substantially the difference in focal length between the two mirrors. A horizontal screen enlargement function characterized in that optical systems for left and right screens are arranged side by side in parallel with each other, and the light beam positions corresponding to each screen are matched in each of the left and right optical systems. Stereoscopic glasses equipped with.   An objective lens pair with a pair of vertical axis cylindrical convex lenses that input left and right screens, an eyepiece pair with a vertical axis cylindrical concave lens that goes to the front binocular position on this input optical axis, and the input optical axis as a binocular front optical axis Stereoscopic glasses with a horizontal screen enlargement function, including a pair of refraction prisms with a refraction angle that is refracted horizontally toward the direction and set to be larger than the maximum angle of the observation screen.   An objective lens pair including a pair of vertical-axis cylindrical convex lenses for inputting left and right screens, and an eyepiece pair including a vertical-axis cylindrical concave lens facing the front binocular position on the input optical axis, and each vertical-axis cylindrical lens pair Both or any one of the lenses has a function of horizontally rotating the lens along the cylindrical surface, and the refraction angle generated by this rotation causes the input optical axis to be refracted horizontally to the binocular front optical axis. 3D glasses with a screen enlargement function in the horizontal direction.   It consists of an optical system that pairs the objective lens with a vertical cylindrical convex lens that is convex on the objective side and the eyepiece with the vertical cylindrical concave lens that is concave on the objective side on the input optical axis, which inputs the screen. , For each optical system for left and right screens, the optical system is horizontally symmetrical in the left-right symmetric direction (outside or inside each other) around the point between the objective lens and the eyepiece on the input optical axis. Stereoscopic glasses having a screen enlargement in the horizontal direction, characterized by having a function of adjusting the horizontal refraction angle of the input optical axis by rotating. A pair of objective lenses by a pair of horizontal axis cylindrical concave lenses for inputting left and right screens, an eyepiece pair by a horizontal axis cylindrical convex lens directed to the front binocular position on each input optical axis, and the input optical axis and binocular front light Stereoscopic glasses having a function of compressing a screen in the vertical direction, including a pair of refraction prisms that refract the horizontal optical axis angle difference with the axis in the horizontal direction. A pair of objective mirrors by a horizontal cylindrical convex mirror that inputs left and right screens and reflects them in the vertical forward direction, and a horizontal axis cylindrical concave mirror or reflective mirror that reflects this reflected optical axis in the vertical direction toward the front of the binocular position. Stereoscopic glasses having a function of compressing a screen in the vertical direction, including a pair of reflecting mirrors by an equivalent optical system using a horizontal axis cylindrical convex lens and a horizontal refraction prism on the reflecting optical axis. By including multiple angle adjustment functions that can set multiple independent adjustment amounts for a single mirror optical system that adjusts the angle of view by changing the reflection angle, these can be adjusted independently for each necessary adjustment factor. A stereoscopic image multiple angle adjustment method for adjusting the angle of view of a stereoscopic image, in which a plurality of adjustment factors can be adjusted simultaneously in one mirror using the sum of these adjustment amounts as the adjustment amount of the mirror. A three-dimensional projector output screen in which two screens are arranged side by side, and the left and right screens are divided into two, and these are reflected in opposite directions in the horizontal and horizontal directions. A pair of eyepiece mirror optical system with a vertical axis cylindrical convex mirror in combination with a concave lens or an equivalent function, and a mirror and a vertical axis with a variable angle in the horizontal direction that reflects this optical axis almost perpendicularly to the front to be projected An objective mirror optical system pair of vertical axis cylindrical convex mirrors having a combination with a cylindrical concave lens or an equivalent function, and the optical axis distance between the eyepiece mirror optical system and the objective mirror optical system is determined by the both mirror optical systems A stereoscopic image projection adapter device having a screen enlargement function in the horizontal direction, which is adjusted and fixed to a value substantially corresponding to the difference in the focal lengths. A three-dimensional projector output screen in which two screens are compressed side by side, the left and right screens are divided in half, and these are reflected in opposite directions in the horizontal and horizontal directions. Paired with a cylindrical lens or a vertical-axis concave cylindrical mirror with an equivalent function and an eyepiece mirror optical system pair, and a vertical mirror with a variable angle in the horizontal direction that reflects this optical axis almost perpendicularly to the front to be projected An objective mirror optical system paired with a vertical cylindrical cylindrical convex mirror having a combination with an axial cylindrical concave lens or an equivalent function, and an optical axis distance between the objective mirror optical system and the eyepiece mirror optical system. The value is equivalent to the difference in focal length of the mirror optical system, and the mirror of either the objective mirror optical system or the eyepiece mirror optical system is further used. A horizontal direction characterized by having an angle adjustment function for setting a plurality of independent adjustment amounts in the optical system pair, and enabling the angle adjustment of the convergence angle and the zoom angle of view independently by the angle adjustment function. 3D image projection adapter device with screen enlargement function. A three-dimensional projector output screen in which two screens are arranged side-by-side and arranged, and a pair of eyepieces with vertical cylindrical convex lenses that divide the left and right screens into two left and right, and one common vertical to project this optical axis And an objective lens formed of an axial cylindrical concave lens, and has a function of horizontally rotating the left and right eyepiece cylindrical convex lenses along the cylindrical surface. The refraction angle generated by this rotation causes the projection input optical axis to be projected on the projection surface. A stereoscopic image projection adapter having a horizontal screen enlargement function, characterized in that both screens are refracted in the horizontal direction so that they overlap. By using a combination of a horizontal mirror that can be fixed in the horizontal direction or an angle adjustable reflector that reflects the optical axes sideways toward the center, and a vertical cylindrical cylindrical convex lens, or a vertical cylindrical cylindrical convex mirror that has the same function. The objective mirror optical system and the optical axis are received and reflected toward the front, respectively, to form a left and right arrayed stereoscopic image input light beam, installed in contact with each other at the center of the screen or shifted in the direction of the optical axis. A combination of a mirror that can be fixed or angled in the horizontal direction and a vertical cylindrical cylindrical convex lens, or a pair of eyepiece mirror optical systems with a vertical cylindrical cylindrical concave mirror having an equivalent function, and light between the two lenses A stereoscopic image companding input circuit in which the axial distance is set to be approximately the difference between the focal lengths of the two lenses (the ratio of the focal lengths of both lenses is the screen compression ratio). Descriptor apparatus. A combination of a reflecting mirror that inputs the three-dimensional left and right screens and reflects the optical axes sideways toward the center and a vertical cylindrical cylindrical concave lens, or a pair of objective mirror optical systems with a vertical cylindrical cylindrical convex mirror having the same function, and this light Receiving the axis and reflecting each to the front to form a left and right arrayed stereoscopic image input light beam, between the reflecting mirror and the vertical axis cylindrical convex lens installed in contact with each other in the center of the screen or shifted in the direction of the optical axis A pair of eyepiece mirror optical systems with a vertical axis cylindrical concave mirror having a combination or equivalent function, and the optical axis distance between the two lenses is set to the difference in focal length between the two lenses, Provided with an angle adjustment function for setting a plurality of independent adjustment functions for either one of the objective mirror optical system and the eyepiece mirror optical system, Characterized in that to enable each independently adjusting the angle comprising convergence angle and zoom angle by an integer function, the stereoscopic image companding input adapter device.

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