Method for manufacturing multi-curved surface lens light distribution device

Abstract

The invention provides a method for manufacturing a multi-curved surface lens light distribution device. A multi-curved surface lens of an axisymmetric structure composed of eight curved surfaces is designed and manufactured to serve as the light distribution device to conduct light distribution on an LED street lamp, so that a rectangular lighting light spot is obtained. The method for manufacturing the multi-curved surface lens light distribution device is characterized by comprising the following steps that step 1, the length L, width D and height H of the multi-curved surface lens and the installing height h of the LED street lamp are determined primarily; step 2, the cross section of the multi-curved surface composed of eight curved lines is designed through the SolidWorks and the structural parameter of the cross section is obtained; steps 3, the cross section is stretched longitudinally to be at the length L to obtain a complete multi-curved surface lens model; step 4, the multi-curved surface lens model is induced to optical design software Lighttools, stimulation optimization is conducted, and the optimized structural parameter of the multi-curved surface lens light distribution device is obtained; step 5, the multi-curved surface lens light distribution device is manufactured according to the optimized structural parameter of the multi-curved surface lens light distribution device.

Description

technical field [0001] The invention relates to the design of an illumination system, in particular to a manufacturing method of a multi-curved lens light distribution device for realizing LED rectangular light distribution. Background technique [0002] In recent years, street lighting systems have been continuously updated and developed. With the rapid development of microelectronics and semiconductor light-emitting technologies, LED lamps have become a hot spot in recent years due to their low energy consumption and durability. The light distribution method of LED lamps has an important impact on the light efficiency of the lamps. Taking LED street lamps as an example, it belongs to the Lambertian light source. The light distribution and the final rectangular lighting beam can effectively improve the illuminance of street lamps on the road. There have been many inventions about the way to realize the rectangular light distribution of LED street lamps, which are mainly div...

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Problems solved by technology

[0003] However, both of the above two technical solutions for realizing rectangular light distribution of LED lamps have certain defects: when using the fly-eye lens method for light distribution, the LED light source needs to be refracted by the lens twice to obtain a rectangular beam, which causes a large amount of light energy loss, resulting in The light energy utilization rate is very low; although the method of using an external reflector to make the LED lamp emit a rectangular beam is simple in principle, it needs to add an external reflector to the lamp, which makes the lamp larger and inconvenient for installation

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