Support mechanism for multi-side cylindrical achromatic prism

An achromatic and prism technology, which is applied in the field of spatial imaging spectrum, can solve problems such as not being able to meet imaging requirements, and achieve the effects of light weight, high surface shape precision, and simple and reliable structure

Inactive Publication Date: 2011-05-18
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

When the linear expansion coefficients of the two prisms differ greatly, and they are in a space environment with a large temperature difference, this installation method will change the mirror surface shape very seriously when the temperature changes, so that it cannot meet the imaging requirements

Method used

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  • Support mechanism for multi-side cylindrical achromatic prism
  • Support mechanism for multi-side cylindrical achromatic prism
  • Support mechanism for multi-side cylindrical achromatic prism

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Embodiment Construction

[0015] The present invention is described in further detail below in conjunction with the embodiment given with accompanying drawing.

[0016] The invention according to figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 The structural implementation shown includes a gland 1, an outer cylinder 2, a gasket 3, a prism base assembly and an achromatic prism assembly. The material of the gland 1 and the outer cylinder 2 is TC4; the material of the gasket 3 is 7A09; the material of each part in the prism seat assembly is ZTC4, which is precision cast and formed, and the large facade 8 and the small facade 9 are guaranteed by finishing or grinding. The included angle is consistent with the corresponding included angle of the first prism 13, ensuring the parallelism of the upper end surface 4 and the lower end surface 11, and the flatness of the lower end surface boss 10. The first prism 13 in the achromatic prism assembly is made of fused silica material, the p...

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Abstract

The invention provides a support mechanism for a multi-side cylindrical achromatic prism and relates to a support mechanism belonging to the field of space imaging spectrum technologies. The invention aims at providing a support mechanism for a multi-side cylindrical achromatic prism and adopts the technical scheme that the support mechanism for the multi-side cylindrical achromatic prism comprises a gland, an outer drum, a gasket, a prism holder assembly and an achromatic prism assembly, wherein the prism holder assembly comprises an upper end surface, a jack screw hole, an end surface glue injecting hole, a vertical surface cavity wall pit, a big vertical surface, a small vertical surface, a lower end surface boss, a lower end surface and a pit washer; the achromatic prism assembly comprises a first prism, a prism spacer, a second prism, a lower clamp plate, a front clamp plate, a first composite washer and a second composite washer; the achromatic prism assembly is arranged in a cavity of the prism holder assembly, the prism holder assembly is arranged in the outer drum, the gland is inserted from the right end of the outer drum, and the bottom end of the gland is connected with the upper end surface in the prism holder assembly by a screw. The mechanism has the advantages of compact structure, wide temperature range and high surface precision and meets the development requirement of satellite borne spectrum imaging instruments.

Description

technical field [0001] The invention belongs to the technical field of space imaging spectrum and relates to a support mechanism of a polyhedral cylindrical achromatic prism. Background technique [0002] Satellite earth observation remote sensing is developing a hyperspectral imager with a ground resolution of tens of meters, a spectral resolution of λ / Δλ=100, and one or two hundred narrowband spectral channels adjacent to each other in wavelength. It has broad application prospects in fields such as agriculture, forestry, water, soil, mining and other resource investigations and environmental testing. The hyperspectral imager mainly has three kinds of light splitting methods: grating dispersion type, prism dispersion type and interferometric Fourier transform type. Among them, the prism dispersion type has become the most common due to its mature technology, high light energy utilization rate, and simple structure. One of the spectroscopic forms. However, prism dispersio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/02
Inventor 汪逸群颜昌翔董得义
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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