Multi-frequency hybrid heterodyne laser tracker system based on single light source

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United States of America Patent

PATENT NO 12055391
APP PUB NO 20230061358A1
SERIAL NO

17706343

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Abstract

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The present disclosure provides a multi-frequency hybrid heterodyne laser tracker system based on a single light source. According to the laser tracking system proposed in the present disclosure, multi-frequency laser is obtained by conducting multi-acousto-optic frequency shift on a dual-longitudinal-mode laser unit, and an absolute ranging precision gauge is constructed by using a dual-longitudinal-mode interval of a light source. With the frequency shift difference of a multi-acousto-optic frequency shifter, an absolute ranging roughness gauge is constructed, and the relative displacement measurement of dual-frequency light interference is achieved. Meanwhile, by utilizing the reflection of multiple reflectors and light splitting and combining of polarization prisms, synchronous measurement of multi-wavelength absolute distance, relative displacement and PSD position is achieved, resolving the problem that an existing laser tracker uses multiple light sources, which leads to difference in measurement datum, and consequently to the difficultly in traceback.

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Patent Owner(s)

Patent OwnerAddress
HARBIN INSTITUTE OF TECHNOLOGYHEILONGJIANG 150001

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hu, Pengcheng Harbin, CN 18 8
Tan, Jiubin Harbin, CN 55 146
Yang, Hongxing Harbin, CN 4 10
Yin, Ziqi Harbin, CN 2 0

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