Digital holographic three-dimensional appearance detecting device based on multiple wavelengths
A digital holography and three-dimensional topography technology, applied in measurement devices, optical devices, instruments, etc., can solve problems such as wavelength limitation and limited application range, and achieve the effect of ensuring measurement accuracy, improving measurement range, and reducing exposure times.
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[0025] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.
[0026] The present invention is a multi-wavelength digital holographic three-dimensional shape detection device, such as figure 1 As shown, it includes a laser light source 1, a beam splitting unit 2, a mirror 3, a first beam collimating unit 4, a beam deflector 5, a second beam collimating unit 6, a depolarizing beam splitting prism 7, a five-dimensional adjustment installation platform 8, CMOS camera9.
[0027] Wherein, the first beam collimating unit 4 and the second beam collimating unit 6 have the same structure.
[0028] The laser light source 1 generates laser light 1a, and the laser light 1a is input to the light splitting unit 2;
[0029] Laser light source 1 is used to provide 635nm-682nm laser 1a, that is, optical information. This light source provides a single longitudinal mode laser with a central wavelength range of 635nm-682nm. The m...
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