Optical rotation angle field detection device based on polarized beam splitting imaging and measurement method thereof
A detection device and polarized light technology, which is applied in the field of photoelectric detection, can solve the problems of not being able to give quantitatively the angle of rotation, the influence of light source fluctuations, and complicated operations, and achieve accurate and intuitive results, simple operations, and accurate detection results. Effect
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[0027] The detection device of the present invention is mainly composed of two parts: an optical system and a signal acquisition and processing system. The optical system includes the laser in the polarized light generation device, the optical attenuator, the beam expander, the linear polarizer and the polarized beam splitter in the polarized beam splitter, and the signal acquisition and processing system includes an image acquisition card in the image acquisition device , a high-precision CCD detector in the light receiving and imaging device and a computer in the data processing system. system according to figure 1 As shown in the construction, the following measures are taken during the construction process:
[0028] When connecting the optical path, adjust the height of the laser, attenuator, beam expander, linear polarizer, object under test, polarizing beam splitter, and dual optical path CCD detector to ensure that the center of the device is aligned to maximize the de...
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