Solar simulator light source with multiple lenses and multi-optical fiber coupling

Abstract

The invention belongs to the technical field of optical electronic devices and in particular relates to a solar simulator light source with multiple lenses and multi-optical fiber coupling. In the invention, by utilizing the characteristic that a point light source has wider light-emitting opening angle in the cubical space, the high-efficiency utilization and output of light source energy is realized in the spatial light-emitting opening angle range of the light source by adopting the mode of the combination of multiple lenses and reflectors and the multi-optical fiber coupling. The invention is a novel solar simulation device and can be practically applied to the field of green energy sources, and the like.

Description

technical field [0001] The invention belongs to the technical field of optical and electronic devices, and in particular relates to a multi-mirror and multi-fiber coupling solar simulator light source. Background technique [0002] In the field of green solar energy and other fields, the development and application of various photoelectric conversion and photothermal conversion devices need to simulate the radiation spectrum of sunlight in an artificial experimental environment, and provide high-efficiency broad-spectrum sunlight simulation light sources from infrared to ultraviolet. The various light sources simulated and adopted generally have large stereoscopic luminous aperture angles. However, despite long-term efforts, research and use of light source collection systems with different structures, such as single-lens lighting with different focal lengths, or ellipsoidal , parabolic and other focusing mirrors improve the collection efficiency of the light source, but bec...

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Problems solved by technology

[0003] Since the solar simulator designed according to the above conventional method has a large loss of light source energy, in order to simulate sunlight to meet higher optical power output, a very high-power light source must be used, such as a lamp with a power of more than 1000 watts, but The volume and area of ​​the illuminant of high-power lamps are relatively large, so it is not an ideal point light source

Therefore, it will be difficult to obtain the simulated sunlight output characteristics of uniform distribution and low divergence angle through the transmission and mirror optical system designed according to the characteristics of point light source

Therefore, in practical applications, in order to obtain a simulated solar light source with uniform and low divergence angle output, an external diaphragm must not be added to significantly reduce the aperture of the light. In fact, the effective size of the illuminant is reduced to meet the optical principles of an ideal point light source. But at the cost of wasting more optical power and energy

In order to obtain high-power and large-area uniform low-divergence output simulated sunlight, the power of the lamp must be further increased, and the size of the light emitter of the lamp must be increased accordingly. However, limited by the size effect of the effective light emitter, the solar simulator The effective light output power is not directly proportional to the lamp power, but it significantly increases the heat generation of the system, which is a very low efficiency solar simulator application mode

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