Spatial far-ultraviolet high-sensitivity ionized layer imaging device

Abstract

The invention discloses a spatial far-ultraviolet high-sensitivity ionized layer imaging device. The imaging device comprises a main body, a primary mirror, a secondary mirror, a third mirror and a photon counting detector. Three reflector mirrors are successively arranged in the main body along the light transmission direction. A narrow-band reflection multi-layer film or a band-pass reflection multi-layer film is plated on each reflection mirror. The photon counting detector is arranged in the main body and on the end of a light path. According to the invention, according to spectrum response band width requirements on an imaging system imposed by irradiation features of an imaging target, reflection multi-layer film of a corresponding work waveband is directly plated on the surface of each reflector mirror, so a system light path is simplified, size and light are reduced, and research and development difficulty level and cost are reduced; through the photon counting detector, under the premise that the caliber of the optical system is not increased, the response efficiency of the imaging system is improved; imaging can be performed on a weak target in a counting manner without quite low dark noise; the imaging signal to noise ratio is higher than that of a general weak target imaging detector; and an objective of improving detection flexibility is achieved.

Description

technical field [0001] The invention relates to the technical field of far-ultraviolet band space weak target imaging detection, in particular to a space far-ultraviolet high-sensitivity ionospheric imager. Background technique [0002] With the development of space technology, more and more high-sensitivity imaging detection of far-ultraviolet band targets in space is required to achieve weak far-ultraviolet band radiation for deep space targets, near-earth space targets and targets flying outside the atmosphere Perform high-sensitivity imaging detection. Especially the imaging observation of the far-ultraviolet band radiation produced by the earth's plasma layer, ionosphere, and aurora in space. By monitoring the far-ultraviolet band radiation produced by these near-Earth space objects, the mechanism of the near-Earth space environment change can be studied , to predict the space environment, and provide observation data for space weather forecasting and space environment...

AI Technical Summary

Problems solved by technology

This principle instrument has complex structure, large volume, heavy mass, requires larger installation size and load weight, and the difficulty and cost of development are relatively large, and the detection sensitivity of the image-enhanced CCD cannot meet the needs of some extremely weak target imaging.

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