Sub-arc-second large-aperture compact optical structure for detecting dim point targets
A target detection and optical structure technology, applied in optics, optical components, instruments, etc., can solve the problems of heavy system weight and poor adaptability to aerospace environment, achieve good thermal stability, avoid harsh space radiation environment conditions, reduce The effect of small obscuration ratio
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[0055] See figure 1 , The present invention provides a sub-arc-second large-aperture compact optical structure for detecting dark and weak point targets, which includes a lens barrel 1 and an optical system and an image plane 2 arranged inside the lens barrel 1. The lens barrel 1 serves as a shield The space environment irradiates and supports the role of the lens group in the optical system; the optical system includes a first aperture correcting mirror 3, a secondary reflector 4, a second aperture correcting mirror 5, and a first field of view that are arranged in sequence on the same line. The mirror 6, the second field of view correction mirror 7, and the main mirror 8; the first aperture correction mirror 3 and the second field correction mirror 7 are biconvex spherical lenses, the second aperture correction mirror 5 and the first field correction mirror 6 It is a negative meniscus lens, the surface of the primary reflector 8 is concave spherical; the secondary reflector 4 ...
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