Polarization conversion device

A polarization conversion and polarized light conversion technology, applied in the optical field, can solve the problems of low utilization rate of light energy and loss of light energy, and achieve the effect of improving the utilization rate of light energy

Inactive Publication Date: 2019-05-21
CHONGQING IQIYI INTELLIGENT TECHNOLOGY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the non-linearly polarized light-emitting screen is applied to the optical system of the principle of polarized display, it is common practice to add a polarizing filter in

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[0013] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0014] The polarization conversion device according to the present invention includes a plurality of sub-modules. figure 1 It shows a schematic structural diagram of a sub-module of a polarization conversion device according to an embodiment of the present invention.

[0015] Reference figure 1 , The sub-module includes two polarizing devices and a half retarder. Preferably, the sub-module includes two parts arranged up and down, namely an upper part and a lower part, wherein the upper part and the lower part each include a polarizing device 101, and the half retarder 102 is placed on the upper part.

[0016] Wherein, the half retarder 102 is placed on the upper or lower part. Specifically, if the incident light needs to pass through the sub-module to transmit the first polarized light, the half retarder is superimposed on the lower part; if the incident light need...

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Abstract

The invention aims to provide a polarization conversion device. The polarization conversion device comprises a plurality of sub-modules, wherein each sub-module comprises two polarizing devices and a1/2 delay sheet. The polarizing device is used for transmitting the first polarized light and reflecting the second polarized light. The 1/2 delay sheet is used for converting the first polarized light transmitted by the polarizer into second polarized light. The device has the advantages that by means of the deflection conversion device composed of the multiple polarizing devices and the 1/2 delay sheet, incident light is converted into polarized light, so that the non-polarized light emitting screen can be changed into a polarized light emitting screen, the theoretical light energy utilization rate of an optical system can be increased to 100%, and the light energy utilization rate is greatly increased.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to a polarization conversion device. Background technique [0002] In the prior art, some screen display technologies, such as LCD, emit light with linear polarization, while OLEDs, etc. do not emit light with linear polarization. If the non-linearly polarized light-emitting screen is applied to the optical system of the principle of polarized display, it is common practice to add a polarizing filter in front of the non-linearly polarized light-emitting screen to convert the light into polarized light, but this method will lose 50 % light energy, light energy utilization is low. Contents of the invention [0003] The object of the present invention is to provide a polarization conversion device. [0004] According to one aspect of the present invention, a polarization conversion device is provided, wherein the polarization conversion device includes a plurality of sub-modules, ...

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Application Information

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IPC IPC(8): G02B27/28
Inventor 韩昕彦
Owner CHONGQING IQIYI INTELLIGENT TECHNOLOGY CO LTD
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