Stereoscopic display device based on asymmetric double-cylindrical-lens array and method thereof

A stereoscopic display device and stereoscopic display technology, applied in the directions of lenses, optics, instruments, etc., can solve problems such as complicated operation, unsatisfactory volume and weight, and difficult to realize

Active Publication Date: 2015-03-11
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the amount of video image information required for multi-viewpoint stereoscopic display is astonishing, especially in the application field for remote or wireless transmission, multi-viewpoint stereoscopic display will be limited by the channel bandwidth and become difficult to realize
In addition, since more than three cameras are required to shoot at the same time, the cost of image acquisition will increase, the volume and weight will be unsatisfactory, and the operation will be complicated

Method used

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  • Stereoscopic display device based on asymmetric double-cylindrical-lens array and method thereof
  • Stereoscopic display device based on asymmetric double-cylindrical-lens array and method thereof
  • Stereoscopic display device based on asymmetric double-cylindrical-lens array and method thereof

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Embodiment 1

[0029] Figure 5 The schematic diagram of the structure shown is an embodiment of the three-dimensional liquid crystal display of the present invention, and the structure of the display adopts a parallel asymmetric double-lens array 11 . Among them, the focal length of the short focal length cylindrical lens is 2 mm, and the cylindrical lens array is on the side of the liquid crystal panel; the focal length of the long focal length cylindrical lens is 5 mm, behind the Fresnel lens. Two rows of lighting source arrays 7 and 8 are arranged, and the lighting sources form an array, which is used to change the position of the stereoscopic display window parallel to the direction of the liquid crystal panel and expand the horizontal viewing angle of the stereoscopic display; the light source arrays are arranged in two rows along the normal direction of the liquid crystal panel, It is used to change the position of the stereoscopic display window perpendicular to the direction of the li...

Embodiment 2

[0032] Image 6 The schematic diagram of the structure shown is an embodiment of the projected stereoscopic display of the present invention, and the structure of the display adopts a parallel asymmetric double-lens array. On one side of the small focal length of the asymmetrical double-cylindrical mirrors, projector arrays P1, P2, P3..., PN are arranged. clear image. The images of different viewing angles are re-imaged by the long focal length cylindrical lens array, and the images of each viewing angle are projected to the corresponding main window positions W1, W2, W3, ... WN. The viewer's eyes are located in the adjacent main window and a certain area near it, and will watch images with different viewing angles respectively, so as to watch a stereoscopic image. The asymmetric double-lens array is used as a projection stereoscopic display screen, which enables the system to form a long stereoscopic imaging distance Ls with a short projection distance Lp, thereby reducing ...

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Abstract

The invention discloses a stereoscopic display method based on an asymmetric double-cylindrical-lens structure. Asymmetric double-cylindrical-lens units are adopted to be arranged into an array. Each asymmetric double-cylindrical-lens unit is highly approximate with size of a display screen in a length direction. The double-cylindrical-lens unit is a pair of cylindrical lenses with different focal lengths. The imaging planes of the two cylindrical lenses are overlapped with each other, and an image transferring element is arranged at the imaging planes. The display screen is arranged in the exact front of the lighting direction of the asymmetric double-cylindrical-lens array. A left image is displayed when a left eye lighting state is formed by the asymmetric double-cylindrical-lens array, and a right image is displayed when a right eye lighting state is formed by the asymmetric double-cylindrical-lens array. Therefore, stereoscopic image display can be realized. An image display unit can be a liquid crystal displayer, a transparent film image and a transparent printed picture and is used for providing left and right image pairs.

Description

technical field [0001] The invention relates to an auto-stereoscoopic display method that can be directly viewed by the naked eye without any auxiliary tools, especially an auto-stereoscoopic display method for a pair of stereoscopic images that can be watched by multiple people at the same time. Background technique [0002] In the era of information technology where display devices are the main human-computer interaction structure, the display is an indispensable device in human-computer interaction. On the other hand, the three-dimensional images that can be seen by a pair of human eyes, the images obtained by the two eyes can enable human beings to perceive the depth information of the scene, and the brain obtains the three-dimensional spatial distribution of the objective world with the help of these three-dimensional information, so that it can carry out accurate movements , positioning, operation and other complex activities. Stereoscopic display technology is the ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/22G02B3/06
CPCG02B3/06G02B30/27
Inventor 王元庆
Owner NANJING UNIV
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