Mars surface spectrum simulator

Abstract

The invention discloses a Mars surface spectrum simulator, which comprises a light source assembly, a dodging device and an optical filter group, the light source assembly is used for emitting a light beam, the light homogenizer and the optical filter group are sequentially located on a propagation path of the light beam, the light homogenizer comprises a plurality of discrete lens groups and is used for segmenting the light beam and emitting a uniform light beam, and the optical filter group is used for adjusting the spectrum of the uniform light beam and emitting a Mars surface simulation light beam. According to the Mars surface spectrum simulator provided by the embodiment of the invention, the light homogenizer comprises a plurality of discrete lens groups, a Gaussian distribution light beam is divided into a plurality of light beams, the plurality of light beams are superposed to form a uniform light beam with high uniformity distribution, and the light filter group is used for adjusting the spectrum of the uniform light beam, so that the spectrum of the uniform light beam is close to the spectrum of the Mars surface, so that the Mars surface simulation light beam with high uniformity distribution is realized.

Description

technical field [0001] The embodiments of the present invention relate to the field of optical technology, in particular to a Mars surface spectrum simulator. Background technique [0002] Mars is 1.52au away from the sun, and the light intensity reaching the surface of Mars is much weaker than that of the earth. The average light intensity in the orbit of Mars is 590W / m 2 , the earth orbit AM0 standard light intensity is 1367W / m 2 , that is, the average solar intensity in the orbit of Mars is only about 43% of the standard AM0 intensity of the Earth. In addition, according to the difference between perihelion and aphelion, the light intensity of Mars will fluctuate by ±19% (the corresponding solar light intensity is about 493-717W / m 2 ), which is proportionally calculated as 36% to 53% of the earth's light intensity. [0003] In addition, due to the presence of atmospheric components and suspended dust on the surface of Mars, sunlight will be absorbed and scattered when ...

AI Technical Summary

Problems solved by technology

[0003] In addition, due to the presence of atmospheric components and suspended dust on the surface of Mars, sunlight will be absorbed and scattered during the process of passing through the Martian atmosphere and reaching the surface of Mars, resulting in a further reduction in the intensity of Martian light. At the same time, the effects of absorption and scattering in different wavelength ranges are The difference caused a large change in the spectrum of Mars. In the blue light segment, the transmittance of sunlight in the Martian atmosphere is only about 70%, while the transmittance of red light and visible light can reach about 85%. Compared with the AM0 The spectrum has a large distortion

[0004] The Mars spectrum is an important input for the development of the Mars spectrum solar cell and the performance evaluation of the Mars rover solar cell array. If the existing AM0 spectrum simulator is used to test the solar cell for Mars surface exploration, the test results will be different from the actual performance output on the Mars surface. there is a huge difference

Images