Method and system for compositely testing veiling glare coefficient and point source transmittance

Abstract

The invention relates to a method and system for compositely testing a veiling glare coefficient and point source transmittance. Cost can be saved to a large extent. According to the method, the positions of a collimating mirror in a first system and a second system are debugged in advance, and when the veiling glare coefficient is measured, the collimating mirror is moved to the position marked in the first system. When the point source transmittance is measured, the same collimating mirror is moved to the position marked in the second system. The system comprises the first system used for measuring the veiling glare coefficient and the second system used for measuring the point source transmittance, and the first system and the second system share the same collimating mirror. An off-axis reflector mechanism is innovatively used in the method and system, testing cost is greatly saved, and through the cooperation of a light source system, a collecting system and the like, the accurate and complete test of the stray light restraining capacity of the optical component of a large-bore long-focus camera is achieved.

Description

technical field [0001] The invention belongs to the field of optical detection, and relates to a low-cost composite test method and system for stray light coefficient and point source transmittance, and in particular to a laboratory with both stray light coefficient test and point source transmittance test, A set of high-precision, compound, low-cost testing methods and systems have been established. Background technique [0002] In recent years, with the development of high-sensitivity, low-detection-threshold detectors, it has become possible for people to detect weak targets in deep space, and the ability to suppress stray light in optical systems will directly affect the detection of weak targets. In order to seek better Optical testing is essential for the technology of suppressing stray light. A kind of testing equipment that can comprehensively and accurately test the stray light suppression ability of the optical system is ready to be released. [0003] Stray light ...

AI Technical Summary

Problems solved by technology

The aperture of the collimation system required for stray light testing must be larger than that of the camera under test, and the cost of an off-axis reflective collimation system with an aperture of about 1m and a focal length of about 30m is as high as more than 10 million yuan, while the cost of the main mirror of the system is close to that of the system 80% of the total cost, if the necessary collimating objective lenses are purchased according to the above two methods, the equipment purchase fee is extremely expensive and cannot be afforded, so it will seriously affect the development and capabilities of testing laboratories such as scientific research institutes, enterprises and institutions improvement

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