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Self-calibration device and method for measuring parallelism of laser receiving and transmitting optical axes

An optical axis parallel, laser transceiver technology, applied in measurement devices, optical devices, instruments, etc., can solve the problem that the device cannot self-calibrate

Active Publication Date: 2011-11-02
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0008] The present invention aims to overcome the defect that the existing device cannot be self-calibrated, and at the same time improve the adaptability of the test device, and proposes a method and device for measuring the parallelism of the optical axis of laser transmission and reception with a self-calibration function, so as to be applicable to lasers with different offsets Optical Axis Parallelism Test for Active Optoelectronic Instruments

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  • Self-calibration device and method for measuring parallelism of laser receiving and transmitting optical axes
  • Self-calibration device and method for measuring parallelism of laser receiving and transmitting optical axes

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Embodiment Construction

[0026] Combine below figure 1 A preferred embodiment of this patent is given and explained in detail.

[0027] figure 1 It is the light path diagram of test device, wherein used device is: attenuator 2 adopts neutral density attenuation film; Optical lens 31 adopts reflective telescopic objective lens in reflective beam analysis unit 3, and beam analyzer 32 is the beam analyzer of U.S. Coherent Company Instrument; the fiber laser 401 in the simulated echo source 4 is a pulsed fiber laser of Mingxin Company, the beam collimator 402 is a fiber collimator of Thorlabs Company plus a 10× beam expander, and the aperture stop 403 is a variable stop; two The three-dimensional beam scanning unit 5 can adopt a double-wedge scanner, wherein the wedge angle is 0.5°, and the angle rotation stage adopts the TRB-m-1-1 type rotation stage of Shanghai Lianyi; The mirror 601 is a 1:1 beam splitter with vertical incidence, the No. 1 45° incident beam splitter 602 is a 45° incident beam splitte...

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Abstract

The invention discloses a self-calibration device and method for measuring the parallelism of laser receiving and transmitting optical axes. The device comprises an analog echo source, a two-dimensional light beam pointing scanning unit, a system self-detection light path component, a receiving optical axis offset regulating unit and a light beam monitoring and data processing unit. The device and the method can meet measurement of coaxial or common-path laser receiving and transmitting coaxiality and can be used for measuring the parallelism of non-coaxial optical axes of different offsets. The device is mainly characterized by having a self-calibration function so that the state of the device can be monitored at any time and an optical axis offset adjusting function so that the parallelism test of optical axels of different offsets can be met, thereby being particularly suitable for calibrating and testing a laser positive photoelectric instrument.

Description

technical field [0001] The invention relates to an optical axis parallelism measurement technology, in particular to a measuring device and method for the optical axis parallelism of a laser transceiver optical system with a self-calibration function. Background technique [0002] Laser active optoelectronic instrument is a kind of active modern optical remote sensing equipment, which is the extension of traditional radio or microwave radar (radar) to the optical frequency band. Due to the shortening of the detection wavelength and the strengthening of the directivity, the spatial and time resolution capabilities of the system have been greatly improved. [0003] The space-borne laser remote sensing systems that have been developed at home and abroad mainly include laser altimeters, laser rangefinders, and laser radars. Laser remote sensing systems can accurately detect space distance values, and can be applied not only to the detection of three-dimensional For the tracking...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/26G01B11/27
Inventor 何志平况耀武舒嵘狄慧鸽张明方抗美杨世骥
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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