Light modulation module and reflective projection device

A projection device and light modulation technology, applied in projection devices, optics, nonlinear optics, etc., can solve problems such as poor image response, no display, fading, etc., and achieve good projection quality and good reliability

Pending Publication Date: 2022-04-12
CORETRONIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, because the liquid crystal material is used in the LCOS projection device, if the LCOS projection device is located in an environment with too high temperature or a large temperature difference, the liquid crystal material will have a crystallization effect, which will cause poor image response, fade or no display, etc. Phenomenon

Method used

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  • Light modulation module and reflective projection device
  • Light modulation module and reflective projection device
  • Light modulation module and reflective projection device

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Embodiment Construction

[0017] figure 1 It is a schematic block diagram of a reflective projection device according to an embodiment of the present invention. figure 2 It is a schematic diagram of an optical path of a reflective projection device according to an embodiment of the present invention. Figure 3A for figure 2 The schematic diagram of the appearance of the optical modulation module in the embodiment. Figure 3B for figure 2 An exploded view of the optical modulation module of the embodiment.

[0018] Please refer to figure 1 and figure 2 , in this embodiment, the reflective projection device 200 includes an illumination system 210 , at least one light modulation module 100 and a projection lens 220 . Each of the above components will be described in detail in the following paragraphs. In this embodiment, the number of light modulation modules 100 is, for example, three, which are respectively marked as 100R, 100G, and 100B, but it is not limited thereto.

[0019] The illuminat...

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Abstract

A light modulation module comprises a liquid crystal silicon-coated display panel and a temperature adjusting module. The liquid crystal silicon-coated display panel is arranged on a transmission path of the illumination light beam and is used for modulating the illumination light beam. The liquid crystal silicon-coated display panel is arranged in the temperature adjusting module. The temperature adjusting module comprises a temperature sensing element and a temperature control element. The temperature sensing element is arranged beside the liquid crystal silicon-coated display panel and used for sensing the temperature of the environment where the liquid crystal silicon-coated display panel is located. The temperature control element is arranged beside the liquid crystal silicon-coated display panel and is coupled with the temperature sensing element. The temperature control element controls the temperature of the liquid crystal silicon-coated display panel according to the ambient temperature. In addition, a reflective projection device is also provided. The reflective projection device using the light modulation module has good reliability and good projection quality.

Description

technical field [0001] The present invention relates to an optical module and a projection device, and in particular to a light modulation module and a reflective projection device including the light modulation module. Background technique [0002] A projection device using Liquid Crystal on Silicon (LCOS) as a light valve is a reflective projection device, because it is different from a general projection device using a liquid crystal light valve and using Digital Light Processing (DLP). ) light valve projection device, the LCOS projection device can achieve high resolution compared with liquid crystal projection devices and digital projection devices because of the use of silicon substrates to make related circuits. [0003] However, because the liquid crystal material is used in the LCOS projection device, if the LCOS projection device is located in an environment with too high temperature or a large temperature difference, the liquid crystal material will have a crystal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/00G03B21/16
CPCG03B21/006G03B21/16G02F1/136277G02F1/133382
Inventor 李珩张广祥廖培丞谢镇宇
Owner CORETRONIC
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