KR20170080728A - Three-dimensional display apparatus using a parabolic mirror - Google Patents

Abstract

The present invention relates to a stereoscopic image display apparatus using a polygon mirror, and more particularly, to a stereoscopic image display apparatus using a polygonal mirror, including a first projection optical unit for outputting a specified left eye image of a three-dimensional object in a predetermined direction through a first projector, A second projection optical unit that is spaced apart from the first projection optical unit by a predetermined distance and outputs a specific right-eye image of the three-dimensional object through a second projector in a predetermined direction; A projection lens having a concave mirror surface on which light output from the second projection optical unit is incident; The light output from the first and second projection optical units is reflected on the mirror surface and recognized in the left and right eyes of the viewer.
According to the present invention as described above, the light incident on the photomultiplier in a single projector is reflected, and the image is recognized in both eyes of the viewer at a point where the light is gathered in one direction, It is possible to realize a stereoscopic image even with a projector of the present invention, and the cost for implementing the image is reduced, and a stereoscopic image can be effectively implemented even in a narrow space without any space limitation.

Description

[0001] The present invention relates to a three-dimensional display apparatus using a parabolic mirror,

More particularly, the present invention relates to a stereoscopic image display apparatus using a polygonal mirror, and more particularly, to a stereoscopic image display apparatus using a polygonal mirror, in which light incident parallel to a polygon mirror is reflected, And a stereoscopic image is realized by forming a single viewpoint on the stereoscopic image.

Generally, a stereoscopic image expressing a three-dimensional (3D) image is made by the principle of stereoscopic vision through two eyes. Since the time difference between the two eyes, ie, the two eyes, is about 65 mm apart, the left and right eyes see slightly different images due to the difference in position of the two eyes. Thus, the difference in the image due to the positional difference between the two eyes is referred to as binocular disparity.

The above-described stereoscopic image display apparatus allows the left eye to see only the left eye and the right eye to see only the right eye image by using the binocular parallax, so that the user can feel the binocular disparity and feel the stereoscopic effect. In other words, the left and right eyes see different two-dimensional images, and when these two images are transmitted to the brain through the retina, the brain fuses them precisely to reproduce the depth and real feeling of the original three-dimensional image. This technique is called stereography.

However, when stereoscopic images are viewed using the binocular parallax, dizziness and eye fatigue are caused by the parallax of the two images and the mismatch of the focus functions of the eyes. Therefore, in recent years, many researches have been conducted to apply an integral imaging method which can solve the problem of stereo image.

The integrated imaging method was first proposed by Lippmann in 1908. The integrated image method is a method of collecting images by using an image such as a hologram and recognizing the three-dimensional image having a specific depth from a two-dimensional whole element image using a lens array composed of a plurality of single lenses without using glasses. . That is, a viewer can feel as if he or she is viewing a real three-dimensional object while viewing a three-dimensional image formed within a certain volume.

1 and 2 are cross-sectional views illustrating a pickup unit of a stereoscopic image display apparatus of a general integrated image display system and a display unit of a stereoscopic image display apparatus of a general integrated image display system, respectively. 2 is a view showing a viewing angle of a stereoscopic image display device according to a general integrated image method.

A stereoscopic image display apparatus of a general integrated image system includes a pickup unit and a display unit. 1, the pickup unit converts the three-dimensional information of the three-dimensional object 200 into an all-element image using the first lens array 100 and a photographing apparatus 110 such as a camera, and stores the three-dimensional information in the photographing apparatus 110 . As shown in FIG. 2, the display unit includes a display panel 420 and a second lens array 410 to display the entire element image displayed on the display panel 420 again in the form of a stereoscopic image 500.

Such an integrated imaging system does not require glasses or other tools for viewing a stereoscopic image, and it is possible to reproduce a continuous image without generating eye fatigue when a viewer views the stereoscopic image.

However, such a stereoscopic image display apparatus of the integrated image type displays images taken by a plurality of cameras, which causes a problem that a plurality of stereoscopic images reproduced by an error of an image displayed by the projector are simultaneously displayed.

In addition, it is necessary to provide equipment such as a plurality of projectors, so that a high cost is incurred, and a large space is required for image realization.

Therefore, there is an increasing demand for a display device capable of overcoming the unreasonable points of the conventional stereoscopic image display device and realizing a stereoscopic image efficiently in a narrow space at a low cost.

Korean Patent No. 1502407

SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems as described above, and it is an object of the present invention to provide a projection type display apparatus, a projection type projection type projection type projection display apparatus, And a stereoscopic image is realized with one viewpoint of the reflected image.

According to an aspect of the present invention, there is provided an image processing apparatus including a first projection optical unit for outputting a specific left eye image of a three-dimensional object through a first projector in a predetermined direction, A second projection optical unit that is spaced apart from the first projection optical unit and outputs a specific right-eye image of the three-dimensional object in a predetermined direction through a second projector; and a second projection optical unit that is spaced apart from the first and second projection optical units by a predetermined distance, A projection optical system in which a plane on which light output from the projection optical unit is incident is formed as a concave mirror surface; The light output from the first and second projection optical units is reflected on the mirror surface and recognized in the left and right eyes of the viewer.

Wherein the first projection optical unit includes a first projector for projecting a specific left eye image of a three-dimensional object, a first screen provided at a rear stage of the first projector and projecting an image projected from the first projector, And a first condenser lens provided at a rear end of the first condenser lens for condensing the light projected on the screen.

The second projection optical unit includes a second projector for projecting a specific right-eye image of the three-dimensional object, a second screen provided at a rear stage of the second projector and projecting an image projected from the second projector, And a second condenser lens provided at a rear end of the screen for condensing the light projected on the screen.

In addition, the parabolic curved surface is formed so that the four sides are curved concavely so that the parallel rays of light are reflected and gathered at one point.

Further, an interval between the parabolic object and the first and second projection optical parts is set on the basis of the focal distance formed on the pallet.

Further, the first and second condenser lenses are Fresnel lenses.

The parabolic reflector is a mirror made of a metal material.

In addition, a plurality of light projection modules having the first and second projection optical units as a single module are arranged at regular intervals so as to face the photographic lens, and each image captured at a predetermined angle so as to surround the side surface of the three- And the projected image is projected onto the bubble mirror in correspondence with each projector of the light projection module.

According to the present invention as described above, the light incident on the photomultiplier in a single projector is reflected, and the image is recognized in both eyes of the viewer at a point where the light is gathered in one direction, It is possible to realize a stereoscopic image even with a projector of the present invention, and the cost for implementing the image is reduced, and a stereoscopic image can be effectively implemented even in a narrow space without any space limitation.

1 is a cross-sectional view illustrating a pick-up unit of a stereoscopic image display apparatus of a general integrated image display system.
2 is a cross-sectional view illustrating a display unit of a stereoscopic image display apparatus of a general integrated image system.
3 is a view illustrating a stereoscopic image display apparatus using a capsule according to the present invention.
4 is a side view of a stereoscopic image display apparatus using a photographic lens according to the present invention.
5 is a conceptual diagram illustrating a state in which a projected image is reflected on a photographic paper according to an embodiment of the present invention and is recognized by the viewer's eyes.
6 is a conceptual view showing a state in which a projector image is reflected on a photographic paper according to the present invention.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a view illustrating a stereoscopic image display apparatus using a photographic lens according to the present invention, and FIG. 4 is a side view of a stereoscopic image display apparatus using a photographic lens according to an embodiment of the present invention.

Referring to FIG. 1, a stereoscopic image display apparatus using a photographic lens according to the present invention includes a first projection optical unit 10, a second projection optical unit 20, and a photodiode 30.

The first projection optical unit 10 outputs a specific left eye image of a three-dimensional object and comprises a first projector 11, a first screen 12, and a first condenser lens 13.

The first projector 11 projects a specific left eye image of a three-dimensional object photographed by the camera. The first screen 12 is provided at the rear end of the first projector 11, The first condensing lens 13 is provided at the rear end of the first screen 12 to condense the light of the image projected on the first screen 12 to form a four- And project it onto the water mirror (30).

The second projection optical unit 20 outputs a specific right-eye image of the three-dimensional object at a predetermined distance from the first projection optical unit 10 and includes a second projector 21, a second screen 22, And a 2-converging lens 23.

The second projector 21 projects a specific right-eye image of the three-dimensional object photographed by the camera. The second screen 22 is provided at the rear stage of the second projector 21, And the second condensing lens 23 is provided at the rear end of the second screen 22 to condense the light of the image projected on the second screen 22, And project it onto the water mirror (30). In addition, the first and second condenser lenses 23 may be formed of a plurality of ring-shaped Fresnel lenses having a predetermined thickness to reduce the thickness.

The first and second projection optical units 10 and 20 use the binocular parallax to orient the light sources provided in the respective projection optical units 10 and 20 so as to provide specific left and right eye images to the viewer So that they are collected at a certain angle.

The photopolymer 30 includes a mirror surface 31 whose inner surface has a concave shape with a predetermined curvature so that light incident from the first and second projection optical sections 10 and 20 is reflected by the mirror surface 31 . The reflected light is collected at a certain point by a certain curvature of the photopaper 30. The left eye and the right eye of the viewer are located at the spot where the light is gathered and the left eye and the right eye of the viewer Each image is recognized through the right eye, and the viewer is recognized as a stereoscopic image by binocular parallax.

Such a membrane 30 can generally be fabricated using a membrane, but such a membrane-type reflector has the advantage of being inexpensive to fabricate, but the membrane is stretched due to the tension and the pressure must be kept constant to maintain the tension And the size of the screen is limited by the characteristics of such a membrane. Accordingly, in the present invention, it is made of a metal material having a large diameter and is not deformed by tension, and has a sufficient reflectance and low surface curvature.

In addition, the photopaper (30) according to the present invention is formed so that the four sides are curved at a constant curvature, and a focal distance is formed in the photopaper (30). The arrangement distance between the photographic lens 30 and the first and second projection optical units 10 and 20 is set by the focal distance formula based on the focal distance.

In the present invention, the diameter of the lens barrel 30 is 2,300 mm (diagonal length), the radius is 2,000 mm, and the focal interval is 1,100 mm. The lens barrel 30 and the first and second projection optics 10, 20 is set to 4,500 mm by the focal distance formula and the distance between the projectors 11 and 21 of the first and second projection optics 10 and 20 and the screens 12 and 22 is 700 mm, The size of the screens 12 and 22 is 250x250mm and the size of the Fresnel lens used as the condenser lenses 13 and 23 is 250x250mm and the focal length is 900mm .

Hereinafter, with reference to the drawings, a method of recognizing a stereoscopic image to a viewer by the light reflected by the bag according to the present invention will be described in detail.

FIG. 5 is a conceptual view illustrating a state in which a projected image is reflected on a photoreceptor according to an exemplary embodiment of the present invention and is recognized by a viewer. FIG. 6 is a conceptual diagram illustrating a state in which a projected image is reflected on a photoreceptor according to an exemplary embodiment of the present invention.

5, the left eye image of a three-dimensional object incident on the pupil plane 30 from the first projector 11 is reflected on the pupil plane 30 and is recognized in the left eye of the viewer, The right eye image of the three-dimensional object incident on the pupil plane 30 is reflected by the pupil plane 30 and is recognized as the right eye of the viewer, so that the stereoscopic image is felt.

Here, the light incident on the photopaper 30 from the first projector 11 and the second projector 21 is a parallel light source, and the light source reflected by the photopaper 30 is reflected by a certain curvature of the photopaper 30 As shown in FIG. 6, reflects a light beam 11a incident on the first projector 11 in parallel to the photopaper 30 so that light is collected at one point 11a ' The light rays 12a incident on the second projector 21 in parallel are also reflected on the photoreceptor 30 so that light is collected at one point 21a '.

In this manner, the left and right eyes of the viewer are positioned at one point 11a 'and 21a' at which light incident in parallel by the certain curvature of the lens barrel 30 is collected, so that light projected from each projector is recognized do.

In this case, the light source 11a projected from the first projector 11 and the light source 11a projected from the second projector 21 are arranged such that the points 11a 'and 21a' are spaced apart by an average distance of 65 mm, The light source of the projector is arranged so that the light sources 21a and 21a form a certain angle?.

As described above, according to the present invention, a single viewpoint is formed from a single image by the light reflected from the photopaper 30 through a single projector, so that errors caused by interference are less generated than in the conventional integrated image system, The stereoscopic image can be sufficiently recognized.

A plurality of the light projection modules having the first and second projection optical units 20 as a single module are arranged adjacent to each other at regular intervals so as to face the photopaper 30 and the side surfaces of the three- The left and right eye images photographed at predetermined angles are projected onto the photopaper 30 in correspondence with the respective projectors of the light projection module.

As described above, the stereoscopic image can be recognized from a plurality of angles while moving to a point where the viewer reflects the light reflected by the photographed body 30 by increasing the stereoscopic viewpoint by the projector arranged in a plurality of units.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications and variations without departing from the spirit and scope of the invention. Accordingly, the scope of the appended claims should include all such modifications and changes as fall within the scope of the present invention.

10: first projection optical section 11: first projector
12: first screen 13: first condensing lens
20: second projection optical section 21: second projector
22: second screen 23: second condenser lens
30: polygon 31: mirror face

Claims (8)

A first projection optical unit for outputting a specific left eye image of a three-dimensional object through a first projector in a predetermined direction;
A second projection optical unit disposed at a predetermined distance from the first projection optical unit and outputting a specific right eye image of the three-dimensional object through a second projector in a predetermined direction;
A projection lens spaced apart from the first and second projection optical units by a predetermined distance and having a concave mirror surface on which light output from the first and second projection optical units is incident; including,
And the light output from the first and second projection optical units is reflected on the mirror surface and is recognized in the left and right eyes of the viewer.
The method according to claim 1,
The first projection optical part
A first projector for projecting a specific left eye image of a three-dimensional object,
A first screen installed at a rear end of the first projector and projecting an image projected from the first projector,
And a first condenser lens installed at a rear end of the screen for condensing the light projected on the screen.
The method according to claim 1,
The second projection optical unit
A second projector for projecting a specific right-eye image of the three-dimensional object,
A second screen provided at a rear end of the second projector and projecting an image projected from the second projector,
And a second condenser lens installed at a rear end of the screen for condensing the light projected on the screen.
The method according to claim 1,
Wherein the parabolic curved surface is formed so as to be curved concavely at four corners so that the parallel rays of light are reflected and collected at one point.
5. The method of claim 4,
Wherein the interval between the parabolic object and the first and second projection optical units is set on the basis of a focal distance formed on the pallet.
The method according to claim 2 or 3,
Wherein the first and second condenser lenses are Fresnel lenses.
The method according to claim 1,
Wherein the parabolic surface is a mirror made of a metal material.
The method according to claim 1,
A plurality of light projection modules each having the first and second projection optical sections as a single module are arranged at regular intervals so as to face the photographic lens,
Wherein each image captured at a predetermined angle so as to surround the side surface of the three-dimensional object is projected to the projectors of the light projection module so that the projected images are projected on the projectors. .

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