Method for designing irradiation attenuator of xenon lamp light source solar simulator

Abstract

The invention discloses a method for designing an irradiation attenuator of a xenon lamp light source solar simulator, relates to the technical field of optical instrument design, and provides a method for designing an attenuator for realizing large-range adjustment of irradiance and irradiation uniformity of a solar simulator, which comprises the following steps of: determining the shape and themounting position of the attenuator; carrying out theoretical analysis on the attenuator by utilizing the optical expansion amount, and determining a light transmission area; and studying irradiationdistribution at the attenuator by adopting an annulus method, and specifically designing structural parameters such as the number, the size and the arrangement mode of holes of the attenuator to improve the irradiation uniformity. The irradiation attenuator of the xenon lamp light source solar simulator is convenient to install, large-range adjustment of irradiance is achieved under the conditionthat high stability and high uniformity of irradiation are guaranteed, and the xenon lamp light source solar simulator irradiation attenuator has important significance in improving the performance ofa solar simulator.

Description

technical field [0001] The invention relates to the technical field of optical instrument design, and relates to a design method of a solar simulator attenuator with low irradiance attenuation function, which can realize wide-range and high-uniformity adjustment of irradiance. Background technique [0002] As a detection device that simulates the characteristics of solar radiation indoors, the solar simulator is widely used in aerospace, meteorological science, new material development, agriculture and forestry breeding and other fields. [0003] In order to eliminate the instability problem under low irradiance caused by adjusting the xenon lamp power supply current, an attenuator is added to the solar simulator, and the output light of the solar simulator can be attenuated by replacing the attenuator with different attenuation rates. However, at present, the attenuator mostly adopts a mesh structure of equal size and equal spacing to attenuate the output light as a whole. ...

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Problems solved by technology

However, at present, the attenuator mostly adopts a grid hole structure of equal size and equal spacing to attenuate the output light as a whole. The design does not consider increasing the edge radiation energy at the light entrance of the integrator, and does not consider the impact on the uniformity of irradiation.

[0004] At present, with the utilization and development of solar energy, especially the development and production of low-light photodetectors, it is necessary for a solar simulator to realize a large-scale adjustment of irradiation and ensure a high uniformity of irradiation. The current technical level unable to meet actual needs

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