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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 the problems of large volume, high cost, and inflexible application, and achieve the effects of strong real-time performance, high cost performance, and broad application prospects

Inactive Publication Date: 2010-10-20
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • 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

Experimental program
Comparison scheme
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Embodiment 1

[0023] like figure 1 As shown, the embedded polarization measuring instrument based on liquid crystal is composed of two parts: a detection unit 1 and a control unit 2; the detection unit 1 is also composed of two parts: the first part is composed of coaxially arranged first liquid crystal The phase retarder 3, the second liquid crystal type adjustable phase retarder 4, the polarization beam splitter prism 5, the first condenser lens 6 and the first photodetector 7 are composed, and the second part is composed of the second condenser lens arranged coaxially 8 and the second photodetector 9; the first part and the first part are arranged orthogonally; 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 first liquid crystal adjustable phase retarder 3 and the second liquid crystal adjustable phase retarder 4 are exactly the same, and both are compos...

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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 Patents(China)
IPC IPC(8): G01J4/04G02F1/13
Inventor 王晓曼赵海丽刘智刘树昌刘鹏王彩霞景文博姜会林
Owner CHANGCHUN UNIV OF SCI & TECH
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