Light emitting diode (LED) lamp lens

Abstract

The invention discloses a light emitting diode (LED) lamp lens, which comprises a collimation lens, wherein the side face of the collimation lens is a total reflection face; a light outlet face of a sheet lens consists of convex faces of triangular convex lenses and concave faces of triangular concave lenses; and the collimation lens is provided with a refraction groove at an end plane opposite to the light outlet face of the collimation lens. Through the combination of the collimation lens and the sheet lens, the LED lamp lens is applicable to different LED chips and is more universal; and light which is emitted by the LED lamp lens is distributed uniformly and softer.

Description

technical field [0001] The invention relates to the field of LED lighting equipment, in particular to an LED lamp lens. Background technique [0002] A light-emitting diode (Light-Emitting-Diode, referred to as LED) is a semiconductor that can convert electrical energy into light energy, and its core component is an LED chip. [0003] As a high-profile new-generation light source, LED has many advantages such as small size, large luminous flux, all-solid-state operation, compact structure, green and pollution-free, high efficiency, and energy saving. However, because its typical light output characteristic is a half-space Lambertian light source, direct application is likely to cause shortcomings such as unreasonable brightness distribution and glare. Therefore, secondary light distribution technology is usually used in lighting applications to redistribute light. Various LED optical lenses have become the most Ideal secondary light distribution technology. [0004] At pre...

AI Technical Summary

Problems solved by technology

The design of the common secondary light distribution lens needs to consider the luminous characteristics of the chip itself. For different LED chips or different LED packages, due to the differences in the luminous characteristics of the chips, after replacing the chip, the secondary optical lens needs to be redesigned to meet the requirements. The same illumination distribution requirements, that is, the versatility of the secondary optical lens has strong limitations, resulting in the need to design different lenses for different chips in the actual production process, which increases the high cost of lens mold opening, which is not conducive to General promotion and application

[0005] In the prior art, the light distribution effect of the secondary light distribution lens of the LED lamp is not ideal, so that the LED light source emitted through the secondary light distribution lens still has the technical problems of light glare and uneven light distribution.

[0006] The Chinese patent application with the publication number CN 101943368A discloses an LED condenser lens, the lens is a truncated cone lens, the rear end of the lens is provided with a cylindrical first refraction groove, and its front end is provided with a cylindrical second refraction groove. groove, the outer wall of the lens is a total reflection surface, and the groove walls of the first refraction groove and the second refraction groove form a refraction surface, which provides an LED concentrating lens with a small beam divergence angle, high light concentration, and high light efficiency, which solves the problem of existing problems. There are defects of non-circular light spot and uneven light spot formed by LED in the technology

However, the limitations of the generality of the secondary optical lens, light glare, and technical problems of uneven light distribution still exist.

[0007] Therefore, it is necessary to provide an improved high-power LED lamp lens in order to overcome the limitations of the generality of the light distribution lens in the prior art and the problems of glare and uneven light distribution in the LED light source

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