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Three-lens full digital reflection back projection TV

A reflective, all-digital technology, applied in the field of televisions, can solve the problems of loss of light utilization rate, reduction of display color fidelity and contrast, difficulty in achieving ideal effects, etc., and achieve the effect of improving resolution and image quality

Inactive Publication Date: 2007-09-12
XINCHENG ZHIDIAN NETWORK TECH CO LTD SHANGHAI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the three-color polarized light is separated and synthesized in the same optical system TPA in this prior art liquid crystal projection system, the design requirements for the thin films of the prisms that make up the TPA are very high, and it is difficult to achieve the desired effect, resulting in serious light utilization. rate loss and reduced display color fidelity and contrast
There are other variants of this type of system, but they all have the imaging defect caused by only using the same projection lens and the same PBS for the three-color light

Method used

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  • Three-lens full digital reflection back projection TV
  • Three-lens full digital reflection back projection TV

Examples

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Embodiment

[0022] As shown in Figure 1, the three-lens all-digital reflective rear projection TV includes a casing 1, a screen 2, a three-lens all-digital reflective projector 3, a small reflector 4, and a large reflector 5, and the screen 2 is set On the front of the casing 1, the three-lens all-digital reflective projector 3, the small reflector 4, and the large reflector 5 are arranged in the casing 1, wherein the small reflector 4 is obliquely arranged at the bottom of the screen 2, and the large The reflector 5 is obliquely arranged on the top, and the light signal sent by the three-lens all-digital reflective projector 3 is projected to the small reflector 4, and then projected on the screen 2 after being reflected by the large reflector 5.

[0023] The three-lens reflective projector in this embodiment includes a housing, a light engine, a circuit board, a lighter, a power supply, a light source and a corresponding heat dissipation mechanism arranged in the housing. The light engi...

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Abstract

The invention relates to a three-lens all-digital reflecting back protection TV set, comprising case, screen, projector, small reflector and big reflector, where the screen is arranged on the obverse side of the case; the projector, the small reflector and the big reflector are arranged in the case, the small reflector is tiltedly arranged below the screen, the big reflector is tiltedly arranged at the top, and the light signal emitted by the projector is projected to the small reflector and the reflected through the big reflector onto the screen, and it is characterized in that: the projector is a three-lens all-digital reflecting projector. As compared with the existing techniques, the kernel part of the invention is an originally designed three-lens all-digital reflecting (LCOS) projector, therefore all the brightness, contrast, and resolution as well as image quality are obviously improved in comparison with common back projection TV sets.

Description

technical field [0001] The invention relates to a television set, in particular to a three-lens all-digital reflective (LCOS) rear-projection television. Background technique [0002] Traditional LCD rear-projection TVs, including transmissive LCD rear-projection TVs (ie LCD rear-projection TVs) and reflective LCD rear-projection TVs (ie LCOS rear-projection TVs), generally include lighting optical systems, color light separation optical systems, first to The third electro-optical device (the central element is a combined device of a liquid crystal light valve and a polarizer, and the liquid crystal light valve includes a transmissive liquid crystal light valve LCD or a reflective liquid crystal light valve LCOS device), a color-light synthesis device, a projection optical device and a screen. In LCD rear-projection TV, the first to third electro-optic devices pass through the first to third color lights in sequence respectively. Generally, the first to third color lights ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/74H04N9/31
Inventor 邓运明
Owner XINCHENG ZHIDIAN NETWORK TECH CO LTD SHANGHAI
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