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Receiving and transmitting coaxial auxiliary light correction device and method for active photoelectric system

An optoelectronic system and auxiliary light technology, applied in other optical calibration fields, can solve the problems of late start of the spaceborne laser remote sensing system, single test items, inability to satisfy the active laser remote sensing system, etc., and achieve a simple and effective device self-checking method and device structure. Simple, low-cost effects

Active Publication Date: 2016-09-07
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

Inquiry of domestic and foreign documents and materials on laser remote sensing system calibration and testing technology shows that every laser remote sensing system developed abroad will be equipped with a special test system, and a special general test system will be adopted in this century; and The domestic spaceborne laser remote sensing system started relatively late. At present, there are some test methods for airborne laser range finders. Can not meet the needs of calibrating active laser remote sensing system

Method used

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  • Receiving and transmitting coaxial auxiliary light correction device and method for active photoelectric system
  • Receiving and transmitting coaxial auxiliary light correction device and method for active photoelectric system
  • Receiving and transmitting coaxial auxiliary light correction device and method for active photoelectric system

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Embodiment Construction

[0026] The implementation examples of the method of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] The main devices adopted in the present invention are described as follows:

[0028] 1) The first single-mode fiber 1 and the second single-mode fiber 2: Thorlabs’ SM600 single-mode fiber is used, and its main performance parameters: the working band is 600-800nm; the fiber mode field diameter is 4.6um@680nm, including The core diameter of the layer is 125±1um, and the cut-off wavelength is 550±50nm;

[0029] 2) The first collimating mirror 3 and the second collimating mirror 4: the collimating mirror model 352280-B of Thorlabs company is adopted, and its main performance parameters: the working band is 600-1050nm; the focal length is 18.4mm, and the aperture is 6.5mm; The transmission material is ECO550;

[0030] 3) Beam splitter 5: a non-polarizing beam splitter prism model BS017 from Thorlabs is used. Its main ...

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Abstract

The invention discloses a receiving and transmitting coaxial auxiliary light correction device and method for an active photoelectric system, and is especially suitable for an auxiliary light correction process where there are transmitting and receiving optical systems at the same time, and is also suitable for other fields, such as the calibration of the normal of a plane mirror and the auxiliary light axis registering. The device is based on an auto-collimation function of a cube-corner prism, adjusts two laser beams to form a 180-degree inclined angle through the beam splitting function of a Beam Splitter, carries out the light axis registering of the simulation receiving echo of one laser beam and a receiving optical path and the light axis registering of the simulation transmitting light of the other laser beam and an actual transmitting light through employing the characteristic that the two laser beams form the 180-degree inclined angle, and achieves the coaxial installation and correction of the receiving and transmitting optical paths. The device is simple in structure, is low in cost, and is simple in calibration method.

Description

technical field [0001] The invention relates to a performance test and auxiliary optical calibration device and method of a laser active photoelectric instrument. It is especially suitable for the auxiliary calibration process of transmitting and receiving optical systems. Candidates and other optical school fields. Background technique [0002] The laser remote sensing system is an active modern photoelectric remote sensing device, which is an extension of the traditional radio or microwave radar (radar) to the optical frequency band. Due to the shortening of the detection wavelength and the strengthening of the directionality, the space and time resolution capabilities of the system have been greatly improved, and it has been widely used and deeply studied in military, aerospace, geodetic mapping, engineering construction, etc. Among them, in aerospace remote sensing, laser is favored for its high spatial resolution, high sensitivity, good monochromaticity, all-weather an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/497
CPCG01S7/4972
Inventor 吴金才何志平舒嵘王建宇
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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