Small-angle lens for high-power LED

Abstract

The invention discloses a small-angle lens for a high-power LED. The small-angle lens comprises a lens body. The bottom of the lens body is provided with an LED containing cavity. The lens body comprises a fully reflecting surface on the side face and an arc-shaped concave surface on the top. The bottom of the arc-shaped concave surface is provided with a free-from surface. The top of the LED containing cavity is provided with a circular conical refraction part. An LED light source emits light at the bottom of the LED containing cavity. After reflected by the fully reflecting surface on the side portion of the lens body and refracted by the circular conical refraction part, light is subjected to light concentration of the free-form surface and light uniformization and color mixing treatment of the arc-shaped concave surface and is turned into a collimated beam to be protected out. Under conventional lens outline dimensions, small-angle light beam projection less than 10 degrees is realized. The small-angle lens has good light uniformization and color mixing effects and can be extensively applied to LED outdoor projection lamps, entertainment PAR lights, wall washer lamps, matrix lamps and the like.

Description

technical field [0001] The invention belongs to the technical field of LED lighting and relates to an LED lens, in particular to a small-angle lens for high-power LEDs. Background technique [0002] With the implementation of the incandescent lamp phase-out plan, LED lighting has gradually become popular. Compared with traditional lighting, LED lighting has significant advantages in energy saving, environmental protection and long life. Widely used in shopping malls, hotels, hospitals, roads, architectural landscapes, stage lighting and other lighting fields. [0003] Due to the large power required for stage entertainment lighting and outdoor landscape lighting, in order to realize this kind of high-power LED lighting, there are currently two technologies: packaging a single high-power LED chip or adopting multi-chip integrated packaging. For the former, The realization of high power is often limited by the size of the chip, while integrated packaging has greater flexibili...

AI Technical Summary

Problems solved by technology

[0005] For this reason, the present invention is to solve the above-mentioned technical problems, thereby proposing a high-power LED that improves the color mixing effect of small-angle beams, prevents the LED light source from scalding the light incident surface of the lens, and solves the problem that the lens appearance and optical properties are difficult to balance. small angle lens

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