Method for overcoming ovalization of irradiating surface of off-axis collimating type solar simulator

Abstract

The invention discloses a method for overcoming the ovalization of an irradiating surface of an off-axis collimating type solar simulator, relates to a method for overcoming the ovalization of the effective irradiating area of the off-axis collimating type solar simulator and belongs to the technical field of optical designs. The technical problem to be solved is to provide the method for overcoming the ovalization of the irradiating surface of the off-axis collimating type solar simulator. The technical scheme comprises the following steps of: establishing a structural model of an optical system of an off-axis reflection collimating type solar simulator; selecting an off-axis angle of the optical system; regulating a relative aperture of the optical system; regulating an optical integrator to be in a minimal spherical aberration value state; optimizing optical parameters of a spherical surface collimating mirror; and performing fine tuning on a geometric position of the spherical collimating mirror on an optical axis. The method solves the problem of the ovalization of the irradiating surface output by an off-axis collimating optical system with a large relative aperture and a large off-axis angle, and meets design requirements.

Description

technical field [0001] The invention belongs to the technical field of optical design and relates to a method for overcoming the ellipse of the effective irradiated area of ​​an off-axis collimation type solar simulator. Background technique [0002] A solar simulator is a test or calibration device that simulates the characteristics of solar radiation under different air quality conditions indoors. The development of solar simulation technology is closely related to the development of space science in my country. The solar simulator has become an important part of the space environment simulation experiment research on the ground in my country's space environment science. The solar simulator is mostly used for the ground environment simulation test of the spacecraft, and provides the spacecraft with uniform, collimated and stable light irradiation that matches the solar spectral distribution. In the spacecraft vacuum thermal environment test, the solar simulator is the mo...

AI Technical Summary

Problems solved by technology

This kind of light convergence brings two adverse effects: first, the irradiated surface is obviously "biased" in the meridian plane off-axis, and the center is symmetrical in the sagittal direction, so that the radiant surface in the case of an off-axis collimated system The shape of the irradiated surface is elliptical; 2. The light density at the edge of the irradiated surface increases, and the irradiance increases, which is extremely unfavorable to the uniformity of the irradiation of the entire irradiated surface, so that the design indicators of the simulator cannot meet the design requirements

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