Acta Photonica Sinica, Volume. 50, Issue 7, 139(2021)
Design of Spatial Resolution PDV Probe Based on Double Telecentric Lens
In order to simultaneously measure the multi-point velocity of a plane target in the range of 5 mm in material dynamics experiments or structural response research, a laser transmitting and receiving probe with spatial resolution for photonic Doppler velocimetry is developed based on the dense fiber array and double telecentric lens. The optical design and structural design are described, and the installation and testing of the probe are performed. The test results of output spot characteristics show that the vertical axis magnification of the probe is consistent with the design value. The minimum diameter of the spot at the focusing position is 109 μm and the maximum is 202 μm. The test results of the receiving efficiency of the probe to the diffuse reflection target show that each fiber in the probe is not crosstalk, and the receiving efficiency of the fiber near the center is large, while that of the two sides is small.
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Jun YANG, Yadong YAN, Qi LI, Guokai SHI, Zhao WANG, Yang ZHANG, Suoqi ZHANG, Junhua HE. Design of Spatial Resolution PDV Probe Based on Double Telecentric Lens[J]. Acta Photonica Sinica, 2021, 50(7): 139
Category: Instrumentation, Measurement and Metrology
Received: Jul. 21, 2020
Accepted: Feb. 4, 2021
Published Online: Sep. 1, 2021
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