Dichroic prism assembly for off-axis triple mirror optical system and method of operation thereof

Abstract

A spectroscopic prism assembly for an off-axis three-mirror optical system and an operation method thereof belong to the technical field of optical element support. In the present invention, the support frame is an integrated structure, which reduces the complexity of assembly and adjustment. The positioning boss is used in the support frame for positioning, which reduces the contact surface and improves the assembly accuracy. The upper part of the beam-splitting prism is fixed with a beveled pressure plate, and then sealed with glue to realize low-stress connection into an assembly without over-constraint or under-constraint, thus ensuring the safety of the beam-splitter prism during positioning and installation. The integrated structure ensures that the beam splitting prism has better surface shape accuracy under loads such as gravity and temperature. Install the CCD base on the left and right ends of the support frame, then install the CCD bracket, place the CCD detector in the CCD bracket, adjust according to the actual optical path, and finally fix it to further ensure the assembly accuracy.

Description

technical field [0001] The invention belongs to the technical field of optical element support, and in particular relates to a beam splitting prism assembly for an off-axis three-reflection optical system and an operation method thereof. Background technique [0002] The off-axis three-mirror optical system has the advantages of no obstructing at the center, no chromatic aberration, foldable optical path, easy to light weight, large aperture and insensitivity to changes in temperature and air pressure, etc. It is widely used in biomedical imaging, remote sensing cameras, etc. The reflection system has sufficient design freedom, can well correct and balance the aberration of the system, has a compact structure and good image quality. [0003] In the field of space optics, with the development of space remote sensing technology, in order to obtain target image information with a larger spatial range and more spatial details, space remote sensing cameras are gradually developin...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to provide a dichroic prism assembly for an off-axis three-mirror optical system and its operating method to solve the problem of obtaining large-scale prisms through mechanical splicing of multiple small-scale CCD detectors in the prior art. The focal plane array with 100 million pixels has a complex structure, large volume and heavy weight, which cannot meet the technical problems of small size, light weight and compact structure of space remote sensing cameras

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