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Three-dimensional image display apparatus

A technology of display device and stereoscopic video, which can be applied to stereoscopic systems, optics, instruments, etc., and can solve the problems such as hindering the thinning of display devices, and the inability to arrange cylindrical lenses and display parts in close proximity.

Active Publication Date: 2013-03-20
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the lenticular lens cannot be arranged close to the display unit, which hinders the thinning of the display device.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0025] figure 1 It is a diagram showing the basic configuration of a stereoscopic video display system including the large stereoscopic video display device 1 (stereoscopic video display device) in Embodiment 1 of the present invention. The large stereoscopic video display device 1 uses LEDs (Light Emitting Diodes) as display pixels, and is a display device that displays video on a large screen of, for example, 32 inches or more. The large stereoscopic video display device 1 has an LED display unit 2 as a display unit and a front lens 3 arranged in front of the LED display unit 2 .

[0026] The LED display unit 2 is connected to a display controller (display control unit) 11 that has a video signal adjustment function and outputs a video signal. A progressive conversion device 13 is connected to the display controller 11 , and a 3D player (player device) 12 capable of outputting a 3D video signal (stereoscopic video signal) is connected to the progressive conversion device 13...

Embodiment approach 2

[0078] Next, a large stereoscopic video display device according to Embodiment 2 of the present invention will be described. The overall configurations of the large-scale stereoscopic video display device and the stereoscopic video display system in Embodiment 2 are the same as those described in Embodiment 1.

[0079] Figure 7 It is a plan view showing an optical system including the LED display unit 5 and the front lens 3 of the large-scale stereoscopic video display device in the second embodiment. The LED display unit 5 has LEDs 51 as display pixels. The LEDs 51 are arranged in a matrix at a certain arrangement interval d in both the X direction and the Y direction. LED51 has the same structure as LED 21 demonstrated in Embodiment 1, but is smaller than LED 21 in size.

[0080] In this Embodiment 2, LED51 is divided by the partition wall 52, respectively. The partition walls 52 are formed, for example, in a lattice shape in the X direction and the Y direction. The pa...

Embodiment approach 3

[0117] Next, a large-scale stereoscopic video display device according to Embodiment 3 of the present invention will be described. The overall configurations of the large-scale stereoscopic video display device and the stereoscopic video display system in Embodiment 3 are the same as those described in Embodiment 1.

[0118] Figure 10 (A) and Figure 10 (B) is a plan view and a side view showing an optical system including the LED display unit 6 and the front lens 3 in the third embodiment. The structure of the LED display part 6 of Embodiment 3 is basically the same as that of the LED display part 5 of Embodiment 2 ( Figure 7 ~ Figure 9 ) are the same, except that a sun visor (sun visor) 61 is provided on the exit side (front lens 3 side) and above the diffusion sheet 53 corresponding to each LED 51, and the sun visor 61 is used as a light shielding member to avoid light from above. Light (for example, external light such as sunlight) directly enters the diffusion sheet ...

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Abstract

The three-dimensional image display apparatus includes a display unit (2) having display pixels (21) arranged in rows and columns, and configured to display right-eye images and left-eye images alternately at every other column. Lenticular lenses (31) with positive refractive power are provided corresponding to respective columns of the display pixels (21). The lenticular lenses (31) and the columns of the display pixels (21) are the same in number. The lenticular lenses (31) collimate light representing the right-eye images and light representing the left-eye images. A deflection optical element (32) deflects the collimated light representing the right-eye images and the collimated light representing the left-eye images toward right-eye and left-eye three-dimensional viewing areas. The deflection optical element (32) includes a plurality of planes extending in a direction of the columns of the display pixels (21) and inclined relative to a normal line of the display unit (2). The planes and the columns of the display pixels (21) are the same in number.

Description

technical field [0001] The present invention relates to a large stereoscopic video display device capable of viewing stereoscopic video with naked eyes. Background technique [0002] Conventionally, an active shutter system has been known as a stereoscopic video display device. In the active shutter method, the video for the right eye and the video for the left eye are alternately displayed on the display unit at high speed (field sequential method), and observation is performed using active shutter glasses. The active shutter glasses alternately block the left and right fields of view in synchronization with the switching of the video through the liquid crystal shutter, so that the right eye can see the video for the right eye, and the left eye can see the video for the left eye. However, in this active shutter method, the observer has to wear glasses, which is troublesome. [0003] On the other hand, a lenticular lens system is known as a stereoscopic video display devic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N13/04G02B27/22G02B30/27H04N13/305
CPCG02B27/22H04N13/0404H04N13/0406G02B27/2214H04N13/305H04N13/307G02B30/27
Inventor 中原宏勋竹下伸夫
Owner MITSUBISHI ELECTRIC CORP
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