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Teaching experiment platform based on liquid crystal device

A technology of liquid crystal devices and experimental platforms, applied in the field of teaching experiment platforms based on liquid crystal devices, can solve problems such as difficult to arouse interest in optical experiments, small hands-on operation space, and complexity, so as to improve the learning ability of exploring unknown knowledge, improve The effect of hands-on experiment ability and simple design method

Pending Publication Date: 2022-04-15
EAST CHINA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, in the physical experiment education, the experiments on the characteristics of light still stay in the more traditional direction, such as: using two polarizers to conduct Marius' law experiments to verify the polarization characteristics of light, and using reference light and object light interference to conduct holographic experiments , or directly use various interferometers (such as Mach-Zehnder, Michelson, etc.) Arouse students' interest in optical experiments, and the experimental device is bulky and not easy to carry

Method used

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  • Teaching experiment platform based on liquid crystal device
  • Teaching experiment platform based on liquid crystal device
  • Teaching experiment platform based on liquid crystal device

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Experimental program
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Embodiment 2

[0052] In this embodiment, the teaching experiment platform also includes a polarization microscope module 94 for presenting the microscopic texture of liquid crystal devices, such as figure 1 and image 3 , the polarizing microscope module 94 is located on the optical breadboard 1, including a recorder 941 arranged in sequence, a microscope 942 for enlarging the texture of the liquid crystal device, a fourth polarizer 943, a rotatable stage 944, a fifth polarizer 945 and The light source 946, the recorder 941 is a CCD or CMOS camera, and the fourth polarizer 943 and the fifth polarizer 945 are rotatable.

Embodiment 1

[0054] Embodiment 1 and Embodiment 2 propose a teaching experiment platform based on liquid crystal devices, and the design method of integrating the interference, diffraction, reflection, and polarization state characterization tests of liquid crystal devices into the same optical experiment platform is simple, efficient and innovative , Increase the interest of students' experiments, mobilize the enthusiasm of students' experiments, effectively improve students' hands-on experiment ability and learning ability to explore unknown knowledge.

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Abstract

The invention relates to a teaching experiment platform based on a liquid crystal device. Comprising an optical breadboard, a laser emitting unit, an interference unit and a first experiment unit, wherein the laser emitting unit, the interference unit and the first experiment unit are arranged on the optical breadboard; the first experiment unit is used for representing far-field diffraction light intensity distribution of a liquid crystal device and testing parameters of the liquid crystal device, the second experiment unit is used for representing far-field diffraction light intensity distribution of the liquid crystal device and testing parameters of the liquid crystal device, and the third experiment unit is used for representing spectral characteristics of a reflective liquid crystal device. And the electric control liquid crystal polarization grating is electrically connected with the multi-path voltage signal generator. Compared with the prior art, the device integrates the characterization and test functions of interference, diffraction, reflection and polarization state of a liquid crystal device, is high in operability, small in size and portable, and is very suitable for physical experiment teaching of students of all ages.

Description

technical field [0001] The invention relates to the field of optical devices, in particular to a teaching experiment platform based on liquid crystal devices. Background technique [0002] At present, in the physical experiment education, the experiments on the characteristics of light still stay in the more traditional direction, such as: using two polarizers to conduct Marius' law experiments to verify the polarization characteristics of light, and using reference light and object light interference to conduct holographic experiments , or directly use various interferometers (such as Mach-Zehnder, Michelson, etc.) It can arouse students' interest in optical experiments, and at the same time, the experimental device is bulky and not easy to carry. Contents of the invention [0003] The purpose of the present invention is to provide a teaching experiment platform based on liquid crystal devices in order to overcome the defects of the above-mentioned prior art, which integ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/22
Inventor 王骁乾郑致刚罗锻斌
Owner EAST CHINA UNIV OF SCI & TECH
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