Embedded type polarization state measuring instrument based on LCD

A polarization state and measuring instrument technology, applied in the field of optical measurement, can solve problems such as high cost, inflexible application, and large volume, and achieve the effect of high cost performance, broad application prospects, and strong real-time performance

Inactive Publication Date: 2008-11-12
CHANGCHUN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Analyzing the existing polarization state measuring instruments in the world, the cost is high, the volume is large, an external computer is required, and the application is not flexible

Method used

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  • Embedded type polarization state measuring instrument based on LCD
  • Embedded type polarization state measuring instrument based on LCD
  • Embedded type polarization state measuring instrument based on LCD

Examples

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Embodiment 1

[0023] As shown in Figure 1, the embedded polarization state measuring instrument based on liquid crystal is composed of two parts: detection unit 1 and control unit 2; the detection unit 1 is also composed of two parts: the first part consists of coaxially arranged liquid crystal type The adjustable phase retarder 3, the liquid crystal type adjustable phase retarder 4, the polarization beam splitter prism 5, the condenser lens 6 and the photodetector 7 are composed, and the second part is composed of the condenser lens 8 and the photodetector 9 arranged coaxially The first part is arranged orthogonally to the first part; the control unit 2 is composed of a signal acquisition and liquid crystal control module 10, a data processing module 11, a display module 12 and an RS232 serial port 13;

[0024] The liquid crystal adjustable phase retarder 3 and the liquid crystal adjustable phase retarder 4 are exactly the same, and are composed of nematic liquid crystals, both of which are...

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PUM

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Abstract

The present invention relates to an embedded polarization state measuring apparatus, which is composed of a detection unit (1), liquid crystal type adjustable-phase delayer(s) (3, 4), a polarization beam-splitting prism (5), a collective lens (6), a photo detector (7) arranging in a shaft of a first part of the detection unit (1); a collective lens (8) and a photo detector (9) arranging in a shaft of a second part being orthogonal with the first part; a control unit (2) containing a signal-collection and liquid crystal control module (10), a data treatment module (11), a display module (12) and a RS232 serial port (13). By means of replacing rotational wave sheet by the liquid crystal type adjustable-phase delayer, It is able to control polarization state of incident light and measure Stokes parameter for real time quantity of polarization state accurately, and to overcome mechanical vibration problem; it is used for collimation of optical element(s), measurement of optical phase delay, material representation, medicament development, communication equipment, ellipse polarization instrument and spectrum application as well as space optical communication.

Description

technical field [0001] The invention relates to an embedded polarization state measuring instrument based on liquid crystal, and belongs to the technical field of optical measurement. Background technique [0002] With the rapid development of laser technology, people's attention to artificial light sources has gradually increased from the initial intensity considerations to the study of their polarization states. [0003] As the polarization and polarization laws of light are continuously discovered and mastered by people, correspondingly, they are widely used in modern production practice and science and technology. For example, in laser communication, polarized light is used to realize confidential communication; in the chemical industry, polarized light is used to measure the concentration of solutions; in the mechanical industry, we can use the interference of polarized light to analyze the internal stress distribution of parts, etc. With the gradual increase of people...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J4/04G02F1/13
Inventor 赵海丽王晓曼刘智刘树昌刘鹏王彩霞景文博
Owner CHANGCHUN UNIV OF SCI & TECH
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