Adjusting method of compact infrared optical lens

Abstract

The invention discloses the adjusting method of a compact infrared optical lens. The method comprises the following steps of (1) for all infrared lenses in a single infrared lens group, using space ring grinding and machining precision to ensure the interval and the coaxiality of all the infrared lenses; (2) using a visible light transmission material to make a single-piece tool lens, depicting across curve, and plating a semi-reflection semi-transparent film visible light band to replace the corresponding infrared lens group; (3) arranging trimming pads for interval adjustment and trimming pads for inclined angle and coaxial adjustment which are independent to each other on all lens barrels; (4) using a theodolite, standard flat glass, and a level meter to detect the inclined angles andthe coaxiality of a tooling lens and each plane mirror (5) adjusting the inclined angles and the coaxiality of the tooling lens and each plane mirror by the trimming pads; (6) using a laser range finder to detect the interval of each tooling lens, and reaching a design value through the trimming pads; and (7) using the infrared lens to replace the tooling lens to achieve the adjustment of a system.

Description

technical field [0001] The invention belongs to the field of space infrared optical system installation and adjustment, and in particular relates to an installation and adjustment method of a compact infrared optical system, which is suitable for the installation and adjustment process of a compact infrared optical system with limited space and shortened optical path by using multiple folding mirrors . Background technique [0002] Miniaturization, high integration, and high cost performance are the development trends in the field of space optical remote sensing today, and are important prerequisites for agile and fast-response satellites. A satellite usually carries multiple payloads, through the effective collocation and collaborative work of different payloads and different functions to achieve various mission requirements, which brings various contradictions in space and volume allocation. Therefore, the miniaturization and compactness of space optical remote sensors ar...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing infrared optical transmission materials such as silicon and germanium cannot transmit visible light, so the commonly used visible light centering instrument cannot directly adjust the infrared optical system with multi-lens groups

The traditional infrared optical transmission lens with less strict tolerance requirements mainly relies on precision machining to ensure the dimensional accuracy of the mirror housing, and then installs it. It is impossible to make subsequent adjustments to optimize the imaging quality; it can also be used for lenses with a small number of lenses and a shared lens barrel. Use a centering instrument or laser interferometer and a micro-adjustment mechanism to adjust each lens (or lens assembly) individually, and finally realize the system assembly and adjustment. Systems that are no longer simply coaxial (the compact systems described above) are difficult to apply

Images