Particle field optical holographic high-precision reproduction collecting system and method

Abstract

The invention relates to a particle field optical holographic high-precision reproduction collecting system and a particle field optical holographic high-precision reproduction collecting method. A beam expanding alignment unit, a particle field information carrier, an imaging lens, and a charge coupled device (CCD) are arranged on the output optical path of a laser in turn, and the CCD is connected with a computer; the sensitive face of the CCD is positioned at the rear focusing face of the imaging lens; the particle field information carrier is a holographic photographic plate carrying particle field information; a carrier positioning and moving device comprises a three-dimensional translation platform; a CCD positioning and moving device comprises a one-dimensional translation platformand a lens focusing face positioning device; the lens focusing face positioning device comprises a positioning part and a standard partition plate; and the standard partition plate is arranged on oneend face of the positioning part, while the other part of the positioning part is connected with an object face side of the imaging lens. The device and the method solve the problems of low efficiency and low precision of the conventional optical path adjustment and low final data precision of the system caused thereby, realize accurate adjustment to the system optical path according to the lens imaging principle and improve the final data precision of the system.

Description

Technical field [0001] The invention relates to an imaging optical diagnosis system and method, in particular to a particle field optical holographic reproduction collection system and method. Background technique [0002] The particle field holographic diagnosis technology has the advantages of non-contact, high precision, and large test space. In particular, it can directly give the three-dimensional information of the particle field and has become a standard method for particle field measurement. The reproduction and collection of the particle field is an essential part of the particle field optical holographic diagnosis technology. The holographic interferogram that records the particle field information is optically reproduced to obtain a three-dimensional reproduced image of the original particle field. The CCD is used to receive the reproduced images of each level of the particle field and input them into the computer for storage and post-processing. This process is called...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of low efficiency and low precision of optical path adjustment in the existing particle field optical holographic reproduction acquisition technology and the resulting low accuracy of the final data of the system, the present invention provides a system and method for high-precision reproduction and acquisition of particle field optical holography , with the help of the lens focal plane positioning device, according to the principle of lens imaging, the precise adjustment of the system optical path is quickly realized, and the final data accuracy of the system is improved.

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