Two reflection laser scanning angle trigger device
A laser scanning and triggering device technology, applied in optics, optical components, instruments, etc., can solve the problem of insufficient laser scanning angle triggering accuracy, and achieve the effects of high-precision scanning angle triggering, fast response speed, and great flexibility
Active Publication Date: 2018-01-12
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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A laser beam scanning angle triggering device is described in the prior art (Zhou Yu, laser beam scanning angle triggering device, publication number: CN105137595A), but in each scanning angle triggering process of the device, the mirror group only reflects the laser light once, The deflection angle of the optical signal triggered by the scanning angle received by the optical transceiver structure is only 4 times the scanning angle of the laser scanning galvanometer. The triggering accuracy of the laser scanning angle is not high enough, and only two or four The laser beam scanning angle triggers the pulse, which has certain limitations in the application process
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[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments, but the protection scope of the present invention should not be limited thereto.
[0022] see first figure 1 , figure 1 It is a structural diagram of the twice-reflected laser scanning angle triggering device of the present invention. Depend on figure 1 It can be seen that the twice reflected laser scanning angle triggering device of the present invention comprises: a laser light source 11, an optical transceiver structure 12, a polarizing beam splitter 13, a half slide 14, an optical path reflector 15, and a laser scanning vibrating mirror 16 , mirror group 17, photodetector 18 and analog divider 19. The positional relationship of the above components is as follows:
[0023]The output end 21 of the laser light source 11 is connected to the input end of the optical transceiver structure 12, and the first output end 22 of the optical transcei...
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The invention provides a twice-reflection laser scanning angle trigger device, which comprises a laser light source, a light transmit-receive structure, a polarization beam splitter, a half glass slice, an optical path reflector, a laser scanning galvanometer, a reflector group, a photoelectric detector and an analog divider. The trigger device is on the basis of the high-speed laser scanning galvanometer, and in each triggering process, the reflector group reflects the laser twice, so that high-speed and high-precision laser scanning angle triggering can be realized, and a plurality of laser scanning angle trigger pulses can be generated in one scanning period of the scanning galvanometer; and the trigger device has great flexibility and practicality and wide application prospect.
Description
technical field [0001] The invention relates to a laser scanning angle triggering device, which uses a mirror group to reflect laser light twice to realize high-precision angle triggering, and uses multiple mirrors in the mirror group to generate multiple laser scanning angle trigger pulses. Background technique [0002] Angle triggering of high-speed and high-precision laser scanning is a key technology in the technical fields of deep space exploration, satellite laser communication, and laser imaging radar (see [1] Li Anhu, Sun Jianfeng, Liu Liren. Design principle [J]. Acta Optics Sinica, 2006, 26(7): 975~979. [2] Li Anhu, Liu Liren, Sun Jianfeng. Large-aperture precision laser beam scanning device [J]. Chinese Journal of Mechanical Engineering, 2009, 45(1) : 200~204.). With the development of military electronic technology, the application of lasers in modern and future warfare is becoming more and more common, and the precise determination of the direction of incident ...
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IPC IPC(8): G02B26/10
CPCG02B26/105
Inventor 周煜张国孙建锋蔡光宇张宁李光远贾昱成张波许蒙蒙刘立人
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI