CN103176345B - The human eye bionic stereo projection apparatus of non-rectangle plane - Google Patents

Abstract

The invention discloses a non-rectangular plane bionic three-dimensional projection device for human eyes, which includes a projection device and a projection screen. The projection device includes a left projection device and a right projection device. Integrating prism, there is a polarized light separator behind the integrating prism, the light is reflected by the total reflector after passing through the condenser lens, integrating prism, and polarized light separator, and then passes through the first dichroic dichroic mirror, the second dichroic The dichroic mirror is decomposed into RGB three-primary color light, and the RGB three-primary color light is incident on the liquid crystal panel under the action of the reflector and the lens, and then enters the color-combining prism, and a projection lens is arranged behind the color-combining prism. The viewer wears polarized glasses to watch, which is very comfortable and will not cause visual fatigue, dizziness, nausea and other discomfort.

Description

Human-eye bionic stereoscopic projection device with non-rectangular plane

technical field

The invention relates to a projection device, in particular to a bionic three-dimensional projection device for human eyes.

Background technique

The imaging situation of the human-eye bionic stereo camera device is the same as that of human binocular perception: when imaging, the image at the central focal point is the clearest, and the image becomes blurred as it expands to the surroundings; the captured video image is a non-rectangular shape that is similar to the actual perception of the human eye irregular shape, and the resolution is non-uniformly distributed. The projection screens of conventional projection equipment are all rectangular planes, and the resolutions projected on the projection screens are all fixed values. This kind of projection device does not match the bionic stereo camera device of human eyes, and the projection effect is still not good.

Contents of the invention

The technical problem to be solved by the present invention is that there is no projection device matching the human-eye bionic stereoscopic camera device, and a human-eye bionic stereoscopic projection device with a non-rectangular plane matched with the human-eye bionic stereoscopic camera device is provided, and its stereoscopic video has a strong sense of comfort .

The technical solution of the present invention is realized in the following manner: a non-rectangular plane bionic three-dimensional projection device for human eyes includes a projection device and a projection screen, the projection device includes a left projection device and a right projection device, and the left projection device includes a focusing An optical lens, an integrating prism is arranged behind the condenser lens, and a polarized light separator is arranged behind the integrating prism. The dichroic mirror and the second dichroic dichroic mirror are decomposed into RGB three-primary color light, and the RGB three-primary color light is incident on the liquid crystal panel under the action of the reflector and lens, and then enters the color-combining prism. projection lens.

The projection screen has a concave hemispherical shape, and the projection screen is a metal screen with polarization characteristics.

The video of the left and right viewpoints captured by the human-eye bionic stereo camera is a non-rectangular image sequence. Correspondingly, the projection screen in the present invention is a concave metal screen with polarization-maintaining properties. Simultaneously, the design of the projector of the present invention is matched with the bionic stereo camera device of the human eye, and the projector can project the left and right eye images taken by the bionic stereo camera device of the human eye onto the corresponding position of the hemispherical projection screen in the form of polarized light , and ensure that the polarized light of the left and right eye video signals projected onto the concave hemispherical screen has different polarization directions. The viewer wears polarized glasses to watch, the polarization direction of the polarized light of the video signal for the left eye is the same as that of the left polarized lens, and the polarization direction of the polarized light of the video signal for the right eye is the same as that of the right polarized lens. Finally, the left and right eye video signals are fused in the viewer's brain to form stereoscopic video information that is similar to the actual perception of the human eye. Watching this stereoscopic video is very comfortable and will not cause visual fatigue, dizziness, nausea and other discomfort.

Description of drawings

Figure 1 is a schematic structural view of the present invention.

Fig. 2 is the imaging area of the left projection instrument on the projection screen of the present invention.

Figure 3 is the imaging area of the right projection instrument on the projection screen of the present invention.

Figure 4 is a schematic diagram of the imaging fusion of the left and right projection equipment of the projection screen of the present invention.

Detailed ways

As shown in Figure 1, a kind of human eye bionic three-dimensional projection device of non-rectangular plane comprises projection equipment and projection screen 14, and described projection equipment comprises left projection instrument and right projection instrument, and left projection instrument comprises condensing lens 11, focusing An integrating prism 1 is arranged behind the optical lens 11, and a polarized light separator 2 (PBS) is arranged behind the integrating prism 1. The first dichroic dichroic mirror 6 and the second dichroic dichroic mirror 4 are decomposed into RGB trichromatic light successively, and the RGB trichromatic light is incident on the liquid crystal panel 7 under the action of the mirror 5 and the lens 10, Then enter the color combining prism 9, and the rear of the color combining prism 9 is provided with a projection lens 8.

In the present invention, the structures of the left projection apparatus and the right projection apparatus are the same, and the two are arranged symmetrically.

The projection screen 14 has a concave hemispherical shape, and the projection screen 14 is a metal screen with polarization characteristics.

The working process of the utility model is as follows: the light source projected by LCD three projectors 12 passes through the condenser lens 11, the integrating prism 1, and the polarized light separator 2, and is reflected by the total reflector 3, and is first incident on the first dichroic color separation Mirror 6, the dichroic mirror transmits red light and reflects blue light, and the blue light is split by the second dichroic mirror 4 to transmit blue light and reflect green light. So far, white light has been decomposed into RGB three primary colors. The RGB three primary colors are incident on the liquid crystal panel 7 after passing through the mirror 5 and the lens 10. The RGB three primary colors passing through the three liquid crystal panels 7 are modulated by the image signal voltage added to the liquid crystal panel. After being modulated, the RGB three primary colors Enter the color combination prism 9. Signals from the left and right projection devices are merged into image light in the color combining prism 9 and then projected onto the hemispherical projection screen 14 after the image light is focused, corrected and amplified by the projection lens 8 . The liquid crystal panels are all in concave hemispherical shape, and the liquid crystal units on the liquid crystal panel are cut surfaces of spheres. The specific distribution of the liquid crystal unit is consistent with the distribution of the photosensitive unit on the photoreceptor of the human eye bionic stereo camera device.

Figure 2 and Figure 3 are the imaging areas of the left and right projection instruments respectively. The left and right projected polarized light reaches the viewer's polarized glasses after being scattered by the projection screen. The direction of light polarization is the same. The left and right projected polarized light scattered by the projection screen 14 will filter out the right projected polarized light after passing through the left polarizing lens of the polarized glasses, and only the left projected polarized light will enter the left eye of the viewer. In the same way, after passing through the right polarized lens of polarized glasses, the left projected polarized light will be filtered out, and only the right projected polarized light will enter the viewer's right eye. Finally, corresponding stereoscopic video information is formed in the viewer's brain. Figure 4 shows the fusion of left and right projected polarized light in the viewer's brain. Area a in the figure is the fusion area of left and right viewpoints. This area can be seen by left and right eyes, and it is a stereoscopic image; areas b and c in the figure are non-fused areas. That is, the area b can only be seen by the left eye, and the area c can only be seen by the right eye, which is a non-stereoscopic image. The resolution of the entire projection display image gradually decreases from the center to the surroundings, ensuring that the non-concerned areas and the edge areas of the image are presented to the viewer at a lower resolution than the central area, and the display situation is consistent with the actual perception of the human eye. The situation is consistent, and the problem of discomfort such as visual fatigue will not be caused by the viewer watching the stereoscopic video for a long time.

The liquid crystal cells on the liquid crystal panel in the left projection instrument are distributed non-uniformly at the intersection of the circular ring extending outward from the center and several straight lines passing through the center: for the high-density distribution area of the center, the high-density distribution of liquid crystal cells from the central high-density distribution area Diffusion to the surroundings, as the distance from the center increases, the density of photosensitive units decreases in an approximately linear ratio, which is the same as the proportion of photosensitive units on the photoreceptors of the human eye bionic stereo camera; compared with the high-density distribution area in the center, the low The density of liquid crystal cells in the density distribution area is reduced by 2/3, and the spacing between liquid crystal cells is increased to more than three times that of the central high density distribution area. The specific distribution of liquid crystal units in the liquid crystal panel of the right projection instrument is the same as that of the left display. In order to ensure that the polarization directions of the polarized light projected on the hemispherical screen by the left and right projectors are different, the left and right projectors are equipped with different polarized light separators 2 respectively, or polarizers with different polarization states are placed in front of the two projectors. After the left and right projected polarized light reaches the projection screen, it is scattered and incident on the polarized glasses of the viewer. The polarization direction of the left polarized lens is parallel to the polarization direction of the left projected polarized light, and the polarization direction of the right polarized lens is parallel to the polarization direction of the right projected polarized light. The projected polarized light can only enter the viewer's left eye, and the right projected polarized light can only enter the viewer's right eye. Finally, the left and right eye video signals are fused in the viewer's brain to form stereoscopic video information that is similar to the actual perception of the human eye.

The above is only described as a specific embodiment of the method of the present invention, and can also be extended to other similar embodiments, all of which are within the category of the method of the present invention. As is well known to those skilled in the art, all other hardware or software implementations similar to the embodiments are within the scope of the devices and methods of the present invention.

In addition, it should be noted that although an LCD three-chip projector is used as an example here, the present invention is applicable to other existing projection devices, such as LCOS projectors and DLP projectors. It should also be noted that although the stereoscopic projection here takes a dual projection mode (two projectors) as an example, the present invention is applicable to other single projection modes.

Claims (2)

1. A bionic three-dimensional projection device for human eyes with a non-rectangular plane, comprising a projection device and a projection screen (14), characterized in that: the projection device includes a left projection device and a right projection device, and the left projection device and the right projection device include A condenser lens (11), an integrating prism (1) is arranged behind the condenser lens (11), and a polarized light separator (2) is arranged behind the integrating prism (1), the light passes through the condenser lens (11), the integrating prism ( 1), the polarized light separator (2) is reflected by the total reflector (3), and then decomposed into RGB by the first dichroic dichroic mirror (6) and the second dichroic dichroic mirror (4) in turn The three primary colors, the RGB three primary colors are incident on the liquid crystal panel (7) under the action of the reflector (5) and the lens (10), and then enter the color combination prism (9), and there is a projection behind the color combination prism (9) Lens (8); the liquid crystal panels are all concave hemispherical, and the liquid crystal units on the liquid crystal panel are spherical cut planes; the liquid crystal units on the liquid crystal panel are non-uniformly distributed at the intersection of the circular ring extending outward from the center and several straight lines passing through the center In the above, the liquid crystal cells in the central high-density distribution area are distributed in high density, and diffuse from the central high-density distribution area to the surroundings. As the distance from the center increases, the density of the liquid crystal cells decreases in an approximately linear ratio. Compared with the central high-density distribution In the area, the density of liquid crystal cells in the edge low-density distribution area is reduced by 2/3, and the distance between liquid crystal cells is increased to more than three times that of the central high-density distribution area. 2. The human-eye bionic three-dimensional projection device with a non-rectangular plane according to claim 1, characterized in that: the projection screen (14) is in a concave hemispherical shape, and the projection screen (14) is a metal screen with polarization characteristics .