Multi-degree-of-freedom field-of-view synthesis adjustment method

Abstract

The invention discloses a multi-degree-of-freedom field-of-view synthesis adjustment method, which is characterized by precisely controlling the field-of-view position through a two-degree-of-freedom rotary table; enabling a cross target to be imaged at a plurality of selected field-of-view positions according to a given any field-of-view segmentation mode; and with the imaged images of the cross target being as reference, carrying out precise adjustment by utilizing a six-degree-of-freedom adjusting frame to enable corresponding edge pixel elements on each detector target surface to be imaged, thereby realizing precise adjustment of detector target surface positions. The method is suitable for the cases of lapping and unparallel interval and the like between detector fields of view, can realize multi-detector high-precision adjustment under the any field-of-view segmentation mode and is wide in application range. A spliced field-of-view mirror group is small in aperture, does not need a large-scale adjusting device, is simple to operate, can realize independent imaging, and can serve as a postposition mirror group of a large-aperture infrared optical system; and through a preposition large-aperture non-focal optical system, field-of-view synthesis of detectors of the large infrared optical system is realized indirectly.

Description

technical field [0001] The invention belongs to the technical field of precision assembly and adjustment of photoelectric systems, and in particular relates to a multi-degree-of-freedom viewing field synthesis assembly method. Background technique [0002] Field of view and resolution are two important performance indicators of an infrared optical system. There is a restrictive relationship between field of view and resolution when the detector size and pixel size are fixed. In order to meet the requirements of infrared remote sensing instruments for high resolution and large field of view at the same time, it is necessary to use high resolution efficiency and large-scale area array infrared focal plane detectors. However, limited by the manufacturing process, yield, cost and other conditions, there are still difficulties in the preparation of large area array infrared detectors. The usual solution is to use multiple area array detectors to synthesize the field of view to me...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a multi-degree-of-freedom field of view synthesis adjustment method with high adjustment accuracy, wide application range and easy operation for the deficiencies in the prior art, such as low adjustment accuracy, narrow application range, and inconvenient operation. And it can be applied to large-aperture optical systems and arbitrary detector field of view segmentation forms

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