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A kind of polarization measuring device and method

A measurement device and polarization technology, applied in the optical field, can solve problems such as cumbersome methods, complicated measurement steps, and low efficiency, and achieve the effect of high-efficiency measurement

Active Publication Date: 2022-06-28
SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD
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  • Description
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Problems solved by technology

When studying multiple different incident angles, it is cumbersome to rotate the polarizer to change the incident angle of the incident light entering the polarizer, and the measurement steps are complicated and the efficiency is low

Method used

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  • A kind of polarization measuring device and method
  • A kind of polarization measuring device and method
  • A kind of polarization measuring device and method

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the present invention.

[0029] figure 1 It is a schematic structural diagram of a polarization measurement device at an incident angle in the prior art. like figure 1 As shown, the polarization measurement device is mainly composed of: a light source 1, a first collimating lens 2, a small aperture diaphragm 3, a second collimating lens 4, a polarizer 5, an analyzer 6, and an energy detector 7. The principle In order for the collimated incident light to enter the polarizer 5 and the analyzer 6, the analyzer 6 rotates according to a certain step during t...

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Abstract

The invention discloses a polarization measurement device and method. Light sources incident at different angles carry multiple incident angle information, and the light sources carrying multiple incident angle information are polarized through a polarizer, and the polarized light passing through the polarizer The angle is constrained by the diaphragm, the light passing through the diaphragm is collimated by the first collimator lens, the collimated polarized light is analyzed by the analyzer, and the imaging device detects the polarized light after passing through the analyzer Imaging is performed, wherein the driving device rotates the analyzer, and after each rotation of the analyzer, the imaging device performs imaging, thereby determining the extinction ratio and Polarization angle, which realizes high-efficiency measurement of extinction ratio and polarization angle at different angles of incidence, and then obtains the difference in polarization performance of the polarizer at different angles of incidence, so as to select a suitable angle for incidence according to actual needs.

Description

technical field [0001] The present invention relates to the field of optical technology, and in particular, to a polarization measurement device and method. Background technique [0002] At present, polarizers are more and more widely used. Due to the anisotropy of polarizers, the extinction ratio and polarization angle of polarizers will change when light enters at different angles, and then the polarizing properties of polarizers will also change. When the application scenario of the polarizer is a non-collimated light source, that is, when the light is incident at different angles, it is necessary to measure the extinction ratio and polarization angle of the polarizer under different incident angles to analyze the polarizer under the light source. The extinction ratio and polarization angle are integrated to analyze the polarization performance of the polarizer, so as to set the incident angle of light according to the actual needs of the polarization performance. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M11/02G01J4/00
CPCG01M11/02G01J4/00G01J4/04
Inventor 张一志
Owner SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD
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