Follow-up illuminating free stereo video image display

Abstract

A follow-up illuminating free stereo video image display is disclosed. The display comprises: an audience pupil position acquisition apparatus (an infrared source and an infrared camera), which is used to collect left and right pupil position information of all the audiences and does not affect the audiences to watch an image; an image display device (a transmission-type liquid crystal display), which is used to display the externally input left and right video images in a time sharing mode; a back-light follow-up lighting device (comprising a light source array, a laminated light guide plate and a cylindrical surface lens array), which is used to divide a backlight lighting beam into left and right two beams so as to achieve alternative illumination, wherein one beam follows movement of the left pupils of the audiences and the other beam follows the movement of the right pupils of the audiences. The beams and the left and right video images which are displayed in the time sharing mode are switched synchronously. The left image is projected to the left pupils of all the audiences and the right image is projected to the right pupils of all the audiences so that the audiences can watch the video stereo images without crosstalk. The audiences can independently set a 2D or a 3D mode. The highest transverse resolution is a physical resolution of the liquid crystal screen.

Description

technical field [0001] The invention belongs to the field of autostereoscopic display technology, and relates to the optimized design of a non-coaxial optical system, rapid identification and positioning of multiple targets, rapid grouping of targets, follow-up lighting control, and synchronous control of image display and lighting. Background technique [0002] At present, the display device is transitioning from the flat display mode to the stereoscopic display mode, and the liquid crystal light valve stereoscopic TV has begun to be commercialized, which can produce very good stereoscopic video images, but there are also some disadvantages: each viewer wears special glasses, By receiving the synchronous signal from the display, controlling the high-speed switch of the left and right liquid crystal light valves to obtain a three-dimensional image, all viewers must wear this kind of glasses to watch; the glasses are mainly composed of liquid crystal light valves, receiving co...

AI Technical Summary

Problems solved by technology

[0002] At present, the display device is transitioning from the flat display mode to the stereoscopic display mode, and the liquid crystal light valve stereoscopic TV has begun to be commercialized, which can produce very good stereoscopic video images, but there are also some disadvantages: each viewer wears special glasses, By receiving the synchronous signal from the display, controlling the high-speed switch of the left and right liquid crystal light valves to obtain a three-dimensional image, all viewers must wear this kind of glasses to watch; the glasses are mainly composed of liquid crystal light valves, receiving control circuits, battery frames, etc. Heavier than ordinary glasses, it is easy to fatigue after long-term use; viewers who usually wear ordinary corrected vision glasses need to wear double-layer glasses to watch, and are more prone to fatigue; glasses need battery power supply, and the battery has a certain life, which affects the continuity of use; the cost of glasses is compared High, one payment per person, difficult for many ordinary consumers to accept

This kind of display device solves the problem of image jump when the audience moves horizontally, but it has the disadvantage of being large and not suitable for many people to watch

[0007] "Multi-user free stereoscopic display technology" [Wang Yang, Wang Qingyuan, Liquid Crystal and Display, 2009, 24(3): 434-437] uses a Fresnel lens to project the light from the light source through a 17" LCD screen to the human eye, and obtains With a horizontal field of view of ±30°, the backlight beam can track multiple users in real time, but the light source is 839mm away from the LCD screen, and the size of the display is too large

[0008] "Autostereoscopic display technology based on single-pixel liquid crystal lens" [Ouyang Shihong, Lu Jiangang, Cui Hongqing, etc., Liquid Crystal and Display, 2010, 25(4): 561-564], studied an improved autostereoscopic display with volume The advantages of small size and high resolution, but the backlight beam needs to illuminate multiple users in time, and the brightness of the image will be significantly reduced

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