Image surface correcting structure for imaging spectrograph

Abstract

A image surface checkout structure of imaging spectrometer is suitable for assembling and checkout of imaging spectrometer, comprising computer, and collimator, imaging lens, spectrometer, CCD area array probe, which are successively linked as light circuit, and close cycle control linking to the CCD area array probe, and checkout processing module set in the computer. The invention uses programmable moving desk and special checkout software to detect focal plane position of each imaging frequency range with high accuracy, analyzing position and tilt angle of CCD area array probe and ensuring the best overall resolving power of spectrometer imaging frequency range.

Description

technical field [0001] The invention relates to an image plane calibration device for an imaging spectrometer, in particular to a high-precision image plane calibration device for a push-broom type spectral imager. Background technique [0002] Imaging spectrometer is a new generation of remote sensing instrument developed with the needs of earth observation and the progress of optoelectronic technology in recent years. It organically combines traditional two-dimensional imaging remote sensing technology At the same time as spatial information, the spectral image of the target is acquired with high spectral resolution. Since the obtained spectral image data contains spectral information related to the components of the observed target, it can reveal the spectral characteristics, existence and material composition of the surface object, thus making it possible to directly identify the imaging target. Therefore, in the atmosphere, ocean and It has been widely used in land obs...

AI Technical Summary

Problems solved by technology

The traditional method generally uses a collimator to simulate an object at infinity, uses a reading microscope to measure the focal plane position of the system, and fine-tunes the area array detector to a relatively ideal position based on this focal plane position. The disadvantage of this method is that Using the visual optical system to measure and judge is greatly affected by personal subjective factors. At the same time, this adjustment method cannot solve the problem of resolution degradation in some spectral bands to the greatest extent.

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