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Thermal-optical test calibrating device

A calibration device and thermal optics technology, which is applied in determining the optical axis, testing optical performance, determining the position of the lens, etc., can solve the problems of not reflecting the defocus amount of the collimator, introducing many errors, and low detection accuracy.

Inactive Publication Date: 2016-08-17
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual work, the position of the focal plane of the collimator can only be calibrated with a dial indicator (this method is based on work experience, and no relevant literature has been found). This method has low detection accuracy, introduces more errors, and cannot reflect parallel light. tube real defocus

Method used

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Embodiment Construction

[0012] This system is mainly composed of target emission component 1, beam deflection component 2, image acquisition component 3, computer control terminal 4, semiconductor laser 5, beam splitting prism 6, semi-reflective and semi-transparent prism 7, slit 8, pentaprism and its adjustment Mechanism 9, converging lens 10, CCD camera 11 etc. are composed of eleven parts.

[0013] a) The semiconductor laser 5 is used as a light source to emit a laser beam, and the laser beam is divided into two beams with a fixed angle through a beam splitting prism 6;

[0014] b) the detection light beam is converged on the focal plane of the parallel light tube through the semi-reflective and semi-transparent prism 7 to illuminate the slit 8 thereon, as the detection target of the device;

[0015] c) The two detection beams emitted from the slit 8 pass through the optical system of the collimator to the pentaprism 9 installed on the edge of the aperture of the collimator, and then the detection...

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Abstract

The invention relates to a calibrating device for space thermal-optical testing. The device can be used for detecting a defocusing amount of a parallel light tube with a large calibre in a thermal-optical test and belongs to the field of photoelectric detection. Aiming at the problems that the defocusing of the parallel light tube causes that the detection precision is reduced and system errors are increased when an optical remote sensor is used for carrying out the thermal-optical test, the invention designs the thermal-optical test calibrating device, which can detect the defocusing amount of the parallel light tube in real time. The thermal-optical test calibrating device is small in optical shielding, high in detection precision, good in instantaneity and good in reliability and has very high practicability.

Description

technical field [0001] The invention relates to a calibration device for space thermal optical test, which can detect the defocus amount of a large-diameter collimator in operation, and belongs to the field of photoelectric detection. Background technique [0002] With the continuous development of space optical remote sensors, the requirements for their technical performance indicators are getting higher and higher. In order to achieve higher ground resolution, the aperture and focal length of space optical remote sensors are gradually increasing. The detection of thermo-optical performance of remote sensors brings a series of new problems. For example: with the increase of the aperture and focal length of the optical remote sensor, a collimator with a larger aperture and longer focal length is required for its detection and image quality evaluation. A collimator with a larger aperture and longer focal length has higher requirements for image quality, focal plane position ...

Claims

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Application Information

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IPC IPC(8): G01M11/02
CPCG01M11/0221
Inventor 李响张家齐李英超张立中白杨杨孟立新李小明
Owner CHANGCHUN UNIV OF SCI & TECH