led lighting module and its light control method

Abstract

The invention relates to an LED (light emitting diode) lightening module which comprises an LED and a one-piece transmitting component which is table-shaped generally and covered on the LED, wherein the upper bottom of the transmitting component is inward sunken to form an internal reflection cavity so as to cover the LED; the lower bottom of the transmitting component is inward sunken to form anexternal reflection cavity; and the external reflection cavity is limited by an external refraction wall on the middle part of the external reflection cavity and an external catadioptric wall surrounded on the external refraction wall, and the external catadioptric wall is protruded outward. The LED lightening module in the invention utilizes the internal reflection cavity of the transmitting component to carry out refraction, reflection and refraction on the LED ray, the LED ray is subjected to primary control, and the ray is further subjected to refraction and reflection by virtue of the side walls of the external reflection cavity and the transmitting component, thereby realizing secondary control on the LED ray; a reflector is combined to realize the omnibearing control on the rays emitted by the LED; and the lighting rang of the LED lightening module is obviously enlarged, and the illumination is more uniform.

Description

technical field [0001] The invention relates to an LED (light emitting diode, light emitting diode) lighting module, in particular to an LED lighting module using a light-transmitting single-piece auxiliary optical system (lens) on an LED lighting element and a light control method thereof. Background technique [0002] Compared with traditional light sources, LEDs have higher luminous efficiency, and also have the advantages of small size, low radiation, low power consumption, long life, and fast start-up. The application of LED in the field of lighting has become increasingly mature. Ordinary LEDs are packaged in a common COB (Chip On Board, chip on board). The light emitted by the LED light-emitting chip is not optically corrected, and a circular spot will be formed. The illumination range is small and the illumination is very uneven, which cannot meet the requirements. Road lighting and even home lighting requirements. Now there is also a method of adding a Fresnel le...

AI Technical Summary

Problems solved by technology

Ordinary LEDs are packaged in a common COB (Chip On Board, chip on board). The light emitted by the LED light-emitting chip is not optically corrected, and a circular spot will be formed. The illumination range is small and the illumination is very uneven, which cannot meet the requirements. Requirements for road lighting and even home lighting

Now there is also a method of adding a Fresnel lens in front of the LED to improve the LED light spot and light output aperture, but the effect is not ideal. In the case of a better light spot effect, the light output aperture cannot be enlarged, which leads to this problem. The LED-like light emitting surface is too small, and the lighting appearance is uncoordinated and other defects

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