LED lighting fixtures are optimized to improve the quality of LED use

Update:01 Feb 2019
Summary:

LED lighting fixtures are optimized to improve the qual […]

LED lighting fixtures are optimized to improve the quality of LED use. Therefore, it is especially urgent to study the secondary optical light distribution design of high-power LED light source to meet the needs of large-area light projection and floodlighting. Through the secondary optical design technology, the design of the additional reflective cup and multiple optical lens and aspherical surface can improve the light extraction efficiency of the device. The traditional light source illuminates 360°. The luminaire relies on the reflector to reflect most of the light to a specific orientation. Only about 40% of the light passes directly through the glass cover to the road surface.

The other light is projected through the luminaire reflector. The efficiency of the reflector of the lamp is generally only 50%~60%, so about 60% of the light output is in the lamp, and it is projected onto the road after losing 30%~40%. A large portion of the light output of the source is limited to the internal heating of the luminaire. Most of the light of the LED lamp is forward light, which can achieve >95% light effect. This is one of the important characteristics that LED is different from other light sources. If this feature can not be used well, the advantage of LED will be great. discount. Most high-power LED lamps are assembled with multiple LED chips.

To illuminate so many light sources in different directions, we fully utilize the characteristics of the overall package of the chip, solve them with lenses, and design different convex curves according to different needs through optical design. Relying on the lens to distribute the light to different directions, to ensure that the light angle can reach 120°-160°, and the small light can concentrate the light within 30°. Once the lens is shaped, the same kind of lamp is guaranteed under the premise of the production process. The light distribution characteristics are also consistent. It is possible to continually sum up experience through multiple trials and trials, and to enable LED street lights to meet the batwing light type required by road lighting standards. Tunnel lights, street lights and general lighting have reached the lighting requirements of their respective applications.

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