Space camera field curvature detection device and method

Abstract

The invention provides a space camera field curvature detection device and method, relating to the field of space optical remote sensing. The space camera field curvature detection device comprises a heavy-calibre normal lens, a space camera used for receiving parallel light of the heavy-calibre normal lens and positioned at the lower end of the heavy-calibre normal lens, an optical engine, a Z-direction micrometric displacement platform, a data processing display and synchronous control system, thirty optical probes and an X-Y-direction micrometric displacement regulating frame, a flat plate and two Z-direction regulating supports, wherein the lower surface of the optical engine is positioned at the focal plane of the heavy-calibre normal lens, the Z-direction micrometric displacement platform is connected with the optical engine, the data processing display and synchronous control system is connected with the Z-direction micrometric displacement platform, the thirty optical probes and the XY-direction micrometric displacement regulating frame are connected with the data processing display and synchronous control system, the thirty optical probes are distributed on the X-Y-direction micrometric displacement regulating frame in a manner in which three lines and ten rows are arranged, the upper surface of the flat plate is positioned on the focal plane of the space camera, the thirty optical probes are positioned at the lower end of the flat plate, and the two Z-direction regulating supports are respectively fixed at two ends of the flat plate. The space camera field curvature detection device is small in measurement and calculation errors; and according to the space camera field curvature detection device, the detection problem of field curvature of the space camera is effectively solved.

Description

technical field [0001] The invention relates to the technical field of space optical remote sensing, in particular to a space camera curvature detection device and detection method. Background technique [0002] In the development of space cameras, the installation position error of optical components will cause field curvature, which will destroy the consistency of image plane definition. Therefore, field curvature is an aberration that needs to be strictly controlled during the development of space cameras. [0003] At present, in the process of space camera computer-aided adjustment and wave aberration test, the most commonly used method is the self-collimation test method based on interferometer. Since the focus of the space camera optical system and the focus of the standard mirror of the interferometer are difficult to coincide precisely, so , in the wave aberration fitting process, the defocus will generally be removed as a systematic error (this is the case for each ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the existing method for detecting projection objective lens distortion and field curvature cannot effectively detect space camera curvature, the present invention provides a space camera curvature detection device with small measurement error and high calculation accuracy and its detection method

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