Method for designing LED solar simulator optical system

Abstract

The invention discloses a method for designing an LED solar simulator optical system. The method comprises the following steps: (1) designing an LED light source module; and (2) carrying out secondary optical design on the LED light source module to form the LED solar simulator optical system, wherein the LED light source module is a COB light source module matched with the full spectrum of the sun or the LED light source module is a sun full spectrum light source module composed of a plurality of COB light source modules matched with local spectrum of the sun. The invention aims to provide the designing method of the LED solar simulator optical system.The LED solar simulator optical system is compact and small and can realize high irradiance uniformity of an effective irradiation surface and hyperspectral matching; and the emergent light has high collimation.

Description

technical field [0001] The invention belongs to the field of secondary optical design, in particular to a method for designing an optical system of an LED solar simulator. Background technique [0002] Solar simulation is a technology that uses artificial light sources to simulate the characteristics of solar radiation. It can provide a radiation source that matches the spectrum of sunlight, is collimated, and has stable irradiance. It is widely used in aerospace, meteorology, civil and other fields. . At present, most of the optical systems of solar simulators used at home and abroad are still designed for the xenon lamp as the light source. Although the spectral line of the xenon lamp is the closest to the natural sunlight, the use of the xenon lamp as the light source still has the advantages of short life, high cost, and large size. and other defects. In addition to the inherent defects of the light source, obtaining an ideal standard light source through the use of fi...

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Problems solved by technology

[0004] At present, the design of the optical system of LED solar simulators is mostly arranged in an array. In order to realize the sunlight spectrum, the array LED light source needs to be evenly mixed with LED chip light sources of different wavelengths, which makes it difficult to carry out secondary optical design for this series of array light sources. Very large, because there is currently no effective optical solution for multi-wavelength extended light sources, and the optical system needs to solve the three technical indicators of solar simulator collimation, irradiance uniformity, and spectral matching, which further aggravates the system. Difficulty of design

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