Non-contactable scanning mirror rotating angle and rotating speed testing system
A scanning mirror and detection system technology, which is applied in the directions of measuring devices, measuring angles, surveying and navigation, etc., can solve the problem of low swing angle measurement resolution and dynamic and static measurement accuracy, which cannot meet the resolution and accuracy of hyperspectral imager scanning mirrors Requirements and other issues, to achieve the effect of low cost, high precision, and avoid interference of resistance torque
Active Publication Date: 2012-11-14
YUSENSE INFORMATION TECH & EQUIP QINGDAO INC
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Problems solved by technology
[0007] The resolution of the swing angle measurement and the dynamic and static measurement accuracy of the system are low, which cannot meet the requirements of the resolution and accuracy of the detection system for the scanning mirror of the hyperspectral imager
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[0022] The invention according to figure 2 and image 3 The structure shown is implemented, wherein the semiconductor laser 11 adopts a semiconductor laser whose light spot is a word line, and the wavelength is 635nm; the adjustable support 12 of the semiconductor laser is a height adjustable adjustment seat purchased with the semiconductor laser 11; the array plane reflector 15 The first plane reflector 25, the second plane reflector 26, the third plane reflector 27, the fourth plane reflector 28 and the fifth plane reflector 29 are processed with better K4 glass with optical stability, and the working reflection surface Aluminum-plated film, the back of the five reflectors is glued to the fixed base 16 of the array plane reflector by epoxy resin glue to form the array plane reflector 15; the array plane reflector holder 16 is a fixed seat processed by Al; the CCD The receiving device 17 adopts the linear array CCD of Kodak Company; the fixing seat 18 of the CCD receiving d...
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The invention discloses a non-contactable scanning mirror rotating angel and rotating speed testing system and belongs to non-contactable testing systems in the field of the photoelectricity testing technology. The technical scheme is that the non-contactable scanning mirror rotating angel and rotating speed testing system comprises a semi-conductor laser, an optical filter, an array plane mirror, a charge coupled device (CCD) receiving device, a testing system substrate, a CCD processing circuit, a computer, a tested scan mirror and the like, wherein the semi-conductor laser, the optical filter, the tested scan mirror, the array plane mirror and the CCD receiving device are installed on the testing system substrate, the array plane mirror and the detected scan mirror are oppositely arranged, the array plane mirror and the CCD receiving device are oppositely arranged, and the horizontal central lines of working surfaces of the array plane mirror, the detected scan mirror and the CCD receiving device are arranged on planes with the same height. The testing system is high in accuracy and large in angle testing range, avoids interference of resisting moment of contactable measuring and improves accuracy in measuring of the rotating angle and the rotating speed of the low-speed scan mirror.
Description
technical field [0001] The invention belongs to a non-contact scanning mirror rotation angle and rotational speed testing system related to the technical field of photoelectric detection. Background technique [0002] The spaceborne hyperspectral imager is a new generation of detection equipment based on space-based platforms. It has the advantages of both imaging and spectral detection, so it has a wide range of applications in remote sensing and other scientific and technological fields. When the hyperspectral imager performs push-broom imaging on the ground target, due to the high flying speed of the aircraft, the time (integration time) for each pixel on the detector to receive the radiation of the ground target is very short. When the ground target is dark, the detector’s signal The noise ratio will be very low. In order to reduce the requirement for the high frame rate of the detector and increase the instrument's ability to observe some specific dark targets, a scanni...
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IPC IPC(8): G01C1/00G01P3/36
Inventor 颜昌翔王洋
Owner YUSENSE INFORMATION TECH & EQUIP QINGDAO INC