Anti-jamming automatic counting Michelson interferometer and interference fringe counting method
An interference fringe and automatic counting technology, which is applied in the field of Michelson interference experiment, can solve the problems of weak anti-interference ability and poor accuracy, and achieve the effects of reducing eye damage, accurate counting, and reducing the probability of jitter and mutation
Active Publication Date: 2017-02-08
STATE GRID CORP OF CHINA +1
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[0003] In order to solve the problems of poor accuracy and weak anti-interference ability of the existing Michelson interferometer and interference halo counting method, the present invention provides an anti-interference automatic counting Michelson interferometer and interference fringe counting method
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[0019] The anti-interference automatic counting Michelson interferometer includes an interferometer body 1, and also includes a CPU9 and an electronic display screen 13; Ring-shaped point-shaped laser sensors, and the radius difference of the concentric rings is much smaller than the radius difference of the concentric ring interference fringes presented on the ground glass screen; the laser sensor is connected to the CPU9, and the CPU9 is connected to the electronic display screen 13. The bright bands and dark bands of the concentric ring interference fringes presented on the frosted glass screen 2 pass through the laser sensor in turn, and the laser sensor generates electrical signals and transmits the signals to CPU9, which converts the electrical signals into digital signals and performs data processing , the processed data is displayed on the electronic display screen 13 .
[0020] During specific implementation, the Michelson interferometer of described anti-jamming auto...
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The invention relates to a michelson interference experience, specifically provides an anti-interference automatic counting type michelson interferometer and an interference fringe counting method, and aims at solving the problems of poor accuracy and low interference preventing performance of the existing instrument and mounting methods. The anti-interference automatic counting type michelson interferometer comprises an interferometer body, a CPU and an electronic display screen; point type laser sensors which are annularly distributed like a concentric circle are pairwise arranged on the surface of one side of a frosted glass screen of the interferometer body, facing the interferometer body; the radius difference of the concentric circle is far less than that of a concentric circle interference fringe appearing on the frosted glass screen; the laser sensors, the CPU and the electronic display screen are interconnected in sequence. The anti-interference automatic counting type michelson interferometer and the interference fringe counting method have the advantages that 1) the counting accuracy is improved, and the counting error caused by fringe offsetting and jittering can be lowered down; 2) the probability of jittering and sudden change of the interference fringe is reduced; 3), the damage of laser to eyes of an operator can be reduced.
Description
technical field [0001] The invention relates to a Michelson interference experiment, in particular to an anti-interference automatic counting Michelson interferometer and an interference fringe counting method. Background technique [0002] The Michelson interferometer uses the sub-amplitude method to generate two beams to achieve interference. By adjusting the interferometer, it is possible to generate equal-thickness interference fringes, and it is also possible to generate equal-tilt interference fringes. If it is observed that the interference fringe moves by one line, it means that the moving arm of the plane reflector is half the wavelength of the incident light, which is equivalent to the change of the thickness of the air film between the two plane reflectors being half the wavelength of the incident light. The traditional Michelson interference experiment requires the experimenter to look directly at the two laser beams to call out the interference fringes, and the...
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IPC IPC(8): G01B9/02
Inventor 呼艳生张彦涛白冶国
Owner STATE GRID CORP OF CHINA