LED lamp beads and LED light-emitting modules and LED street lamps using the LED lamp beads

Abstract

The invention relates to a light emitting diode (LED) lamp bead for illumination. The LED lamp bead comprises an LED light source and a lens, the lens performs optical processing on light that is emitted by the LED light source, the lens is provided with an in-light surface and an out-light surface, the in-light surface is provided with an in-light surface optical center axis, the out-light surface is provided with an out-light surface optical center axis, the LED light source is provided with an LED light source optical center axis, lengths of optical paths from the LED light source to the in-light surface are unequal in terms of light rays that are symmetrically emitted from two sides of the LED light source optical center axis, lengths of optical paths from the in-light surface to the out-light surface are unequal in terms of the light rays that are symmetrically emitted from the two sides, and when all light rays that are symmetrically uniformly emitted from the two sides of the LED light source optical center axis are emitted on the out-light surface, the light ray density of one side of the LED light source optical center axis is larger than that of the other side of the LED light source optical center axis. The invention further provides an LED light emitting module and an LED street lamp with the LED lamp bead. The LED lamp bead and the LED light emitting module and the LED street lamp with the same have the advantages that the light patterns are reasonably distributed, the structure is simple, the illuminating range is wide, and the light source utilization rate is high.

Description

[0001] 【Technical field】 [0002] The invention relates to an LED lamp bead for lighting, in particular to an LED lamp bead for street lamps irradiated with polarized light, an LED light-emitting module and an LED street lamp using the LED lamp bead. [0003] 【Background technique】 [0004] In the traditional lighting technology, tungsten filament bulbs are mostly used. Due to the large power consumption and volume, low luminous efficiency and short life, they are increasingly unable to meet the needs of modern society. With the development of semiconductor technology, the application of LEDs with small power consumption and volume, high luminous efficiency and long life in lighting technology has attracted more and more attention. As a new generation of light source, LED's secondary optical design is particularly important, but the biggest problem encountered is that LED lamps are composed of multiple point light sources into a surface light source, which is different from tra...

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the technical problems of poor lighting effect and low light source utilization rate in the existing LED secondary optical treatment, the present invention provides an LED lamp bead with reasonable light pattern distribution, simple structure, wide irradiation range and high light source utilization rate and adopting The LED lighting module of the LED lamp bead and the LED street lamp

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