Optical efficiency detection method for reflecting surface of primary mirror of large-aperture photoelectric telescope

Abstract

The invention discloses an optical efficiency detection method for the reflecting surface of a primary mirror of a large-aperture photoelectric telescope, belongs to the technical field of photoelectric instruments and aims to solve the problem that optical efficiency of the primary mirror reflecting surface cannot be detected in real time if the primary mirror of the large-aperture photoelectric telescope is not demounted in the prior art. A monitoring test lens component which can be quickly demounted for detection is mounted on the inner wall of a primary mirror chamber through a fixing device and comprises a mirror frame and a test lens, the test lens is positioned outside a primary mirror clear aperture, and the test lens and the primary mirror reflecting surface are in an identical using environment; the test lens and the primary mirror are made by an identical material and coated, a film coated on the surface of the test lens and a film system of the primary mirror reflecting surface are identical in structure, and optical efficiency of the primary mirror reflecting surface is determined by detecting optical efficiency of the test lens which is demounted. Detection of optical efficiency of the primary mirror reflecting surface is replaced by detection of optical efficiency of the test lens, so that the optical efficiency detection method is simple, quick and convenient in realization and low in cost.

Description

technical field [0001] The invention belongs to the technical field of photoelectric instruments, and in particular relates to a method for detecting the optical efficiency of a main mirror reflection surface of a large-aperture photoelectric telescope. Background technique [0002] Large-aperture photoelectric telescopes are mainly used for real-time measurement of the position and trajectory of flying targets in the air. Generally, the optical system of a large-aperture photoelectric telescope is open and exposed to the working environment when it is working. Even when working in the field with a relatively harsh environment, it is difficult for the entire optical system of the large-aperture photoelectric telescope to be in a sealed state. Therefore, the surface of the corresponding lens will be There are dust and other attachments, especially the pollution of the primary and secondary mirrors that are directly in contact with the external environment in the optical syste...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a method for detecting the optical efficiency of the reflective surface of the primary mirror of a large-diameter photoelectric telescope, to solve the problem that the efficiency of the reflective surface of the primary mirror of a large-diameter photoelectric telescope cannot be detected online in the prior art, and to determine the optical efficiency of the reflective surface of the primary mirror. Whether the efficiency can meet the requirements of use and whether it needs to be cleaned, so as to avoid frequent cleaning of the reflecting surface of the primary mirror

Images