Focusable light source structure

Abstract

The invention relates to a focusable light source structure, which adopts a light guide pipe structure and comprises a luminous body and a condensing mechanism that are arranged on the same optical axis, wherein the distance between the luminous body and the condensing mechanism is continuously adjustable in the focal range at one side of the condensing mechanism. Particularly, the light source structure also comprises an inner sleeve and an outer sleeve which are arranged coaxially; the luminous body is arranged in the outer sleeve; one end of the inner sleeve is inserted into one end of the outer sleeve, and the other end of the inner sleeve is fixedly provided with the condensing mechanism; and the inner sleeve and the outer sleeve can slide relatively. In the focusable light source structure, the illuminance level of the emitted light can be effectively improved, the module test area is enlarged, the uniformity of the emitted light is guaranteed to meet the requirement, and the test accuracy and the optical efficiency are improved, so that the focusable light source structure can become an important structure form for large-area module measurement and simulation of the outer space environment measurement.

Description

technical field [0001] The invention relates to a light source structure, in particular to an adjustable focus light source used in an on-line test system for concentrated photovoltaic modules. Background technique [0002] At present, the commonly used CPV online detection system usually includes several parts such as projection light source, IV test system, power control system, and off-axis parabolic mirror. Among them, the light source part can choose several forms such as light pipe structure, integrating sphere structure, integrator structure, and Kohler lighting structure. The disadvantage of the light pipe structure is that the energy utilization rate is low, and the large amount of direct light emitted by the filament will reduce the illumination uniformity of the system; the light components emitted by the integrating sphere are single, all of which are direct light, but the optical efficiency is very low, so it is only suitable for small The optical efficiency of...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose an adjustable focus light source, which can effectively improve the illuminance level of the outgoing light, expand the test area of ​​the module, ensure that the uniformity of the outgoing light meets the requirements, and improve the test accuracy, thereby overcoming the existing focus. In the optical module online test system, the irradiance value of the outgoing light is low, the uniformity of the pupil is poor, and there are defects such as filament images on the battery.

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