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Presetting device and presetting method for focal plane of detection camera

A camera and focal plane technology, applied in the field of detection camera focal plane preset devices, can solve the problems of cumbersomeness, low efficiency, inability to realize focal plane preset, etc., and achieve the effect of avoiding motion and improving test efficiency

Active Publication Date: 2018-05-25
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] In order to solve the technical problems that the existing detection camera focal plane preset method is cumbersome, low in efficiency, and unable to realize focal plane preset in a vacuum environment, the present invention provides a detection camera focal plane preset device and method

Method used

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  • Presetting device and presetting method for focal plane of detection camera
  • Presetting device and presetting method for focal plane of detection camera
  • Presetting device and presetting method for focal plane of detection camera

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Embodiment Construction

[0057] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0058] see figure 1 , the detection camera focal plane preset device of the present invention includes a star simulator 1 , a two-dimensional turntable 3 , a two-dimensional turntable controller 4 and a detection camera ground inspection 5 .

[0059] The star simulator 1 is used to provide a star point target located at infinity and satisfying the diffraction imaging of the detection camera to be preset with the focal plane, and the magnitude of the star point target is the actual work of the detection camera 2 to be preset with the focal plane The star magnitude used for positioning; the spectral type of star simulator 1 should be consistent with the observed magnitude target spectrum type; when the object provided by star simulator 1 is conjugated with the image received by detection camera 2, the detection camera 2 The diffuse spots formed are the smallest. In t...

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Abstract

For solving the technical problems that an existing presetting method for a focal plane of a detection camera is more trouble and low in efficiency, and cannot realize presetting of the focal plane ina vacuum environment, the invention provides a presetting device and a presetting method for the focal plane of the detection camera. The presetting device and the presetting method are characterizedin that defocusing distance of the detection camera is converted into that of a star simulator by using the conjugacy relation and the defocusing distance relationship between the star simulator andimaging of the detection camera; confusion spot images, acquired by the detection camera, of the star simulator at different defocusing distances, are analyzed to obtain imaging characteristics of thedetection camera at different defocusing distances, so that motion of a focal plane component of the detection camera is avoided, multiple fixation and adjustment of the posture of the focal plane component of the detection camera are not needed, and the testing efficiency is improved; the detection camera is arranged in a vacuum tank. The imaging characteristics of confusion spots of the detection camera under vacuum conditions are assessed by using the presetting device and the presetting method disclosed by the invention, and further focal plane presetting in the vacuum environment can berealized.

Description

technical field [0001] The invention belongs to the field of photoelectric testing, and relates to a detection camera focal plane preset device and method. Background technique [0002] Detection cameras refer to photoelectric detection equipment mounted on satellites, spacecraft and space station platforms for space target observation, platform self-attitude measurement, and point target imaging. This type of equipment is mainly composed of optical systems and area array detectors. Focal plane preset refers to placing the area array detector on the focal plane of the optical system of the detection camera. The area array detector collects the energy distribution of the optical system near the focal plane, analyzes the energy distribution, and obtains the size of the diffuse spot. The size of the aforementioned diffuse spot changes with the distance between the area array detector and the focal plane of the optical system. In order to ensure sufficient positioning accuracy,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C11/02
CPCG01C11/02
Inventor 李坤薛勋赵建科刘尚阔曹昆李晶王争锋鄂可伟昌明宋琦
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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