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A projection engine module of a single imaging device

A single imaging, imager technology, applied in the direction of instruments, electrical components, image communication, etc., can solve the problems that the illumination light 10 cannot be used and the light utilization rate is low, so as to improve the light utilization rate, increase the projection brightness, reduce the light cost effect

Active Publication Date: 2009-10-21
XIAN YISHEN OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

or similarly, only the illumination light 10 of the second polarization state 2 can be applied, while the illumination light 10 of the first polarization state 1 cannot be utilized
Therefore, the light utilization efficiency of the existing projection engine assembly 500 is relatively low

Method used

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  • A projection engine module of a single imaging device
  • A projection engine module of a single imaging device
  • A projection engine module of a single imaging device

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Embodiment Construction

[0041] The present invention will be described in further detail below through specific embodiments and in conjunction with the accompanying drawings.

[0042] The invention can be widely applied to various micro-display projection systems. In particular, the present invention relates to optical projection engines employing a reflective polarization modulating imager, a pair of polarizing beam splitter coatings, and reflective quarter wave composite sheets, which cooperate to improve optical performance in projection. However, the present invention is not limited thereto, and the value of various aspects of the present invention can be obtained through the following disclosed embodiments.

[0043] figure 1 Shown is a structural schematic diagram of an example of a simple and compact projection system in the prior art. Widely used in various portable, handheld projection display applications, this projection engine assembly 500, also known as an optical single imager projecti...

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Abstract

The invention relates to a projection engine module of a single imaging device, which comprises: a light source, a reflective polarization modulation imaging device, a reflective quarter-wavelength compound sheet, a projection lens system and a polarized beam light splitter module; the polarized beam light splitter module consists of a first polarized beam light splitter film layer and a second polarized beam light splitter film layer arranged in a V-shape incision structure in a pair. Illumination light of the first polarized state is reflected by the first polarized beam light splitter film layer to the reflective polarization modulation imaging device; meanwhile, the second polarized beam light splitter film layer and the reflective quarter-wavelength compound sheet are linked; illumination light of the second polarized state passing through the first polarized beam light splitter film layer is converted into the first polarized state; and the converted light is reflected to the reflective polarization modulation imaging device. After modulated, polarized, rotated, and reflected by the reflective polarization modulation imaging device, the combined illuminating light recurs to the polarized beam light splitter module, and is projected through the projection lens system. The projection engine module of a single imaging device can effectively improve light utilization efficiency.

Description

technical field [0001] The invention relates to a microdisplay projection system, in particular to a microdisplay projection system using a reflective microdisplay imager and a polarizing beam splitter. Background technique [0002] A typical microdisplay projection system includes a transmissive microdisplay imager or a reflective microdisplay imager, a transmissive or reflective microdisplay imager usually refers to a light valve or array of light valves, which are used to apply an image onto an illumination beam . One of the important advantages of reflective light valves over transmissive light valves is that reflective light valves allow the control circuitry to be placed in situ behind reflective surfaces, and since the substrate material is not limited to necessarily transparent materials, more transparent materials can be used. Advanced integrated circuit technology. [0003] A reflective Liquid-Crystal-On-Silicon (LCOS) imager is a type of reflective microdisplay ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/28G02F1/01
CPCH04N9/3167G02B27/283
Inventor 河·H·黄
Owner XIAN YISHEN OPTOELECTRONICS TECH CO LTD
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