A real-time detection system and method for liquid crystal polarization characteristics based on multi-channel measurement
A real-time detection, multi-channel technology, applied in the field of optical measurement, can solve problems such as long time consumption, influence of measurement accuracy, lack of real-time performance, etc., to achieve the effect of high measurement accuracy, high efficiency, and avoiding relative motion
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Embodiment 1
[0036] figure 1 It is a structural schematic diagram of Embodiment 1 of a real-time detection system for liquid crystal polarization characteristics based on multi-channel measurement in the present invention, referring to figure 1 , a real-time detection system for liquid crystal polarization characteristics based on multi-channel measurement, including a laser 1, a polarizer 2, a liquid crystal to be tested 3, an objective lens 4, a multi-channel polarization analysis unit 5, a CCD camera 6 and a computer 7, the positional relationship of which is : Along the laser beam output direction of laser 1, there are polarizer 2, liquid crystal to be measured 3, objective lens 4, multi-channel polarizer unit 5 and CCD camera 6 in sequence, and the output end of CCD camera 6 is connected with computer 7.
[0037] In this embodiment, the polarizer 2 may be a polarizer or a polarizing prism. The laser beam emitted by the laser 1 is modulated by the polarizer 2 to form linearly polarize...
Embodiment 2
[0041] image 3 It is a structural schematic diagram of Embodiment 2 of a real-time detection system for liquid crystal polarization characteristics based on multi-channel measurement in the present invention, referring to image 3 , a real-time detection system for liquid crystal polarization characteristics based on multi-channel measurement, including a laser 1, a polarizer 2, a liquid crystal to be tested 3, an objective lens 4, a multi-channel polarization analysis unit 5, a CCD camera and a computer 7, and its positional relationship is: Along the laser beam output direction of the laser 1, there are polarizer 2, liquid crystal to be measured 3, objective lens 4, multi-channel polarizer unit 5 and CCD camera in sequence, and the output end of the CCD camera is connected with computer 7.
[0042] In this embodiment, the polarizer 2 may be a polarizer or a polarizing prism. The laser beam emitted by the laser 1 is modulated by the polarizer 2 to form linearly polarized li...
Embodiment 3
[0057] Figure 5 is the liquid crystal molecular distribution structure diagram, combined with figure 1 , figure 2 with Figure 5 , the laser 1 is arranged on the Z-axis direction of the liquid crystal to be measured 3, the polarization direction of the polarizer 2 is the Y direction, θ is the deflection angle of the liquid crystal to be measured, and the laser beam emitted by the laser 1 propagates along the Z direction of the liquid crystal to be measured, After passing through the polarizer 2 whose polarization direction is the Y direction (also can be the X direction), the linearly polarized light in the vertical direction (that is, the Y direction) is generated, and the Jones matrix of the incident light incident to the liquid crystal 3 to be measured is expressed as:
[0058]
[0059] Wherein, A is the amplitude of the incident light, and the linearly polarized light in the vertical direction is modulated by the liquid crystal 3 to be measured, Image 6 is a schem...
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