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Optical characteristic measuring system and method of liquid crystal unit

A technology of optical characteristics and measurement system, which is applied in the direction of testing optical performance, optics, nonlinear optics, etc., and can solve problems such as component detection that cannot have optical birefringence characteristics

Active Publication Date: 2011-12-28
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] As mentioned above, the existing PSA system cannot accurately and quickly detect components with optical birefringence characteristics, in view of this, the present invention provides a solution

Method used

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  • Optical characteristic measuring system and method of liquid crystal unit
  • Optical characteristic measuring system and method of liquid crystal unit
  • Optical characteristic measuring system and method of liquid crystal unit

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Embodiment Construction

[0031] The technology disclosed in the present invention is used to complete the measurement of the characteristics of birefringent samples. The angle of the optical axis of the sample is obtained by rotating the polarizer and the analyzer. In the algorithm, the measurement accuracy can be effectively improved under the limited number of measurements. The solution method does not need to obtain a large amount of measurement data and then fit the data to solve the optical axis angle. And according to different applications, the phase difference information can be obtained through mathematical calculations.

[0032] figure 1 A schematic diagram of an optical characteristic measuring system 100 of a liquid crystal cell according to an embodiment of the present invention is shown. The optical characteristic measurement system 100 of the liquid crystal unit comprises a light source 102 that emits a multi-wavelength emitted light (for example: white light), a light source 102 that ...

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Abstract

The invention relates to a system and method for measuring the optical characteristics of a liquid crystal unit. The system includes a light source for emitting emitted light with multiple wavelengths, and a projecting light for converting the emitted light into a polarized beam projected on the object to be tested. Probe, a light-receiving probe having a second penetration axis and used for analyzing the polarization state of the polarized beam generated after the polarized beam penetrates the object under test, and a spectrometer for obtaining the spectral signal of the polarized beam, and a signal analysis unit for calculating the optical axis azimuth angle and / or phase difference distribution of the DUT with a plurality of the spectral signals and a plurality of rotation angles corresponding to each of the spectral signals.

Description

technical field [0001] The invention relates to an optical characteristic measuring system and method of a liquid crystal unit. Background technique [0002] Among the components used in liquid crystal panels, components with optical birefringence characteristics such as liquid crystal layer (Liquid Crystal Cell) and optical compensation film (Compensation Film), etc., whose optical characteristics determine the quality of the liquid crystal display image quality, and the components of the Optical properties can be measured by a polarizer-sample-analyzer (Polarizer-Sample-Analyzer; PSA) system architecture. [0003] The existing PSA measures the optical axis angle or phase difference of anisotropic substances by synchronously rotating or rotating the sample under the condition that the transmission axes of the polarizer and the analyzer are parallel or perpendicular, and using the light measured by the photodetector The intensity signal determines its maximum or minimum val...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13G01M11/02
Inventor 刘志祥庄凯评林友崧
Owner IND TECH RES INST