Reflecting type highly effective LED optical lens

Abstract

A reflective-type efficient LED optical lens is disclosed, belonging to the technical field of semiconductor illumination. A recess is arranged at the middle of the bottom surface of a transparent material body, walls of the recess form into a light-incoming face, the top surface corresponding to the transparent material body at the periphery of the light-incoming face is a light-exiting face, full-circle inclined planes are arranged along the edges of the light-incoming face and the light-exiting face, the bottom surface around the recess is provided with a positioning wall that positions an LED light source, a support leg is arranged on the inclined plane near the positioning wall around the recess, the bottom surface of the support leg is provided with a positioning post. An optical portion of the lens composed of the inclined planes, a light-incoming face and the light-exiting face and a mounting portion of the lens composed of the positioning wall, the support leg and the positioning post constitute the lens jointly. By utilizing the optical lens to implement a secondary light distribution on dispersed lights emitted from the LED light source and to reflect partial lights, the light-exiting efficiency of the LED is efficiently promoted and the optical system for light field distribution of the LED is varied so that illuminance in road illumination areas are distributed uniformly and the illumination effect is superior.

Description

technical field [0001] The invention discloses a reflective high-efficiency LED optical lens mainly used in road lighting lamps, and belongs to the technical field of semiconductor lighting. Background technique [0002] In recent years, with the rapid development of the lighting technology industry, semiconductor lighting (LED) is being widely used in various fields of the lighting industry due to its advantages such as high brightness, low energy consumption, long service life, and environmental protection. [0003] Road lighting occupies a large proportion in the lighting industry, and consumes a huge amount of electricity every year. The promotion of semiconductor lighting (LED) as an energy-saving product seems to be imminent. The energy-saving potential is huge. Most manufacturers around the world are actively developing and promoting it. Currently, there are A variety of LED road lighting fixtures have appeared. [0004] Because the LED light source is a point light ...

AI Technical Summary

Problems solved by technology

[0004] Because the LED light source is a point light source, the current LED road lighting fixtures have a small effective irradiation range and uneven illumination distribution. Now some lamps on the market use reflective cups to reflect and diffuse the light emitted by the LED light source, which can effectively expand the illumination. area, and can direct the light emitted by the LED light source to the required area, but the illuminance distribution is uneven, the middle light intensity is weak at the edge, and the dark area between the two lights is obvious

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