Light polarity conversion module and conversion method thereof

A technology of polarity conversion and polar light, applied in optics, optical components, nonlinear optics, etc.

Inactive Publication Date: 2006-05-17
示创科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The second object of the present invention is to provide an optical polarity conversion module that parallelizes the incident light signal, thereby reducing the problem of poor purity of the converted light signal caused by the scattering of the incident light signal

Method used

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  • Light polarity conversion module and conversion method thereof
  • Light polarity conversion module and conversion method thereof
  • Light polarity conversion module and conversion method thereof

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Embodiment Construction

[0050] see image 3As shown, the present invention provides an optical polarity conversion module 10, which is used in a liquid crystal projection system. The liquid crystal projection system is a single-chip liquid crystal projection system, which includes a light emitting unit 20, an optical polarity conversion module 10, and a uniform light unit. 30. The color transmission wheel 40, the light transmission lens unit 50 and the liquid crystal reflector 60; wherein the light emitting unit 20 includes an ellipsoid lamp 21 and a UV filter 22, so that the ellipsoid lamp 21 emits a light signal and passes through the UV filter The mirror 22 is output to the optical polarity conversion module 10, and the incident optical signal is converted into a single polarity optical signal by the optical polarity conversion module 10, and then focused on the light homogenizing unit 30 to homogenize the optical signal, and passed through The color transmission wheel 40 and the light transmissio...

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Abstract

An optical polarity conversion module and its conversion method, comprising a convex lens, a polarization beam splitting element, an optical phase conversion element, a reflection mirror and a condenser lens, so as to use the convex lens to parallelize the incident optical signal, and then transmit a part of the optical signal through the polarization beam splitting element , a part is reflected by the polarization splitting element, and the transmitted light signal is transmitted through the optical phase conversion element to convert the light phase and then output to the condenser lens, and at the same time, the reflected light signal is reflected by the mirror in the direction of the condenser lens, and then the condenser lens is converged The light signal is in an area. In this way, the optical signal is converted into a single polarity in the state of parallel light, so that the optical signal is more purified, and the thermal effect is reduced with a large-scale optical element.

Description

technical field [0001] The invention relates to an optical polarity conversion module, in particular to an optical polarity conversion module of a projection system, that is, a module for converting a luminous signal into a single polarity optical signal. Background technique [0002] Today's liquid crystal projection system is constantly innovating and breaking through technology. It has many advantages such as thin and light weight, no flicker, low radiation, low reflection and better physical plane. It is enough to replace traditional CRT monitors and is accepted by the general public. [0003] see figure 1 As shown, it is a known liquid crystal projection system, which includes an ellipsoid lamp 10a, a cylindrical integrator 20a, a transparent color wheel 30a, a light transmission lens unit 40a, and a reflective liquid crystal panel 50a, wherein the front end of the cylindrical integrator 20a It has an optical polarity conversion unit 21a whose cross-sectional area is t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/28G02B27/18G03B21/20H04N9/31G02B5/30G02F1/13G03B21/00G03B21/28
Inventor 廖留良
Owner 示创科技股份有限公司
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