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Non-imaging optical directional light distribution lens of LED light source

A non-imaging optics and LED light source technology, applied in the field of non-imaging optical light distribution, can solve the problems of inability to fundamentally improve the Lambertian property of LED light sources, inability to achieve directional light distribution, poor light distribution uniformity, etc. Light distribution control, beneficial to human eye health, and the effect of large light angle

Inactive Publication Date: 2010-03-31
XIAN ZHIHAI POWER TECH
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Problems solved by technology

[0010] The purpose of the present invention is to provide a non-imaging optical directional light distribution lens for LED light sources, which solves the problem that the prior art cannot fundamentally improve the Lambertian characteristics of LED light sources, so that directional light distribution cannot be realized, resulting in poor light distribution uniformity , technical problems of low light efficiency

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  • Non-imaging optical directional light distribution lens of LED light source
  • Non-imaging optical directional light distribution lens of LED light source
  • Non-imaging optical directional light distribution lens of LED light source

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Embodiment Construction

[0061] The directional refraction principle of the light distribution lens of the present invention:

[0062] (1.1) Snell's Law: Light incident on the interface of different media will be reflected and refracted. Where the incident light and the refracted light are located on the same plane, and the angle between them and the interface normal satisfies the following relationship:

[0063] Snell's formula N m sinθ m =N n sinθ n ,

[0064] where N m and N n are the refractive indices of the two media, θ m and θ n are the angle of incidence and angle of refraction, respectively.

[0065] (1.2) Principle of directional refraction of light distribution lens:

[0066] Such as Figure 5 As shown, the refractive index of the incident medium of the light distribution lens N 1 , Refractive index of light distribution lens N 2 , The refractive index of the exit medium after the LED light passes through the light distribution lens N 3 ; The incident angle θ of the LED light in...

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Abstract

The invention provides a non-imaging optical directional light distribution lens of an LED light source. The lens comprises a lens body, wherein the lens body is provided with an incident face and anemergent face; the incident face is an LED light incident face, and is arranged into a tooth shape; and an included angle theta between the incident face and the emergent face is between 0 and 90 degrees. By the lens, the technical problems of poor evenness of light distribution and low light efficiency due to the fact that the prior art cannot improve the Lambert character of the LED light sourceradically and cannot realize directional light distribution are solved. The lens can directionally control the light distribution of the LED light source, realizes precise light distribution, and hashigh reliability, energy conservation and environmental protection.

Description

technical field [0001] The invention belongs to the technical field of non-imaging optical light distribution, and in particular relates to a non-imaging optical directional light distribution lens for an LED light source. Background technique [0002] Functional lighting fixtures such as street lights and tunnel lights require that the illuminance of each point within the lighting range must meet the minimum illuminance index, the highest glare index, the light intensity uniformity index, and the lighting area limit requirements required by the lighting specification, which has a great impact on the reliability of the product. And energy-saving, environmental performance and other requirements are also very high. In order to improve the lighting effect and protect the health of human eyes, it is necessary to use lamps to carry out optical system lighting distribution, that is, in a given road position and a given road surface area, a light field with uniform illumination is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V5/04H01L33/00F21Y101/02
CPCG02B5/045F21V5/04F21Y2101/02F21W2131/103F21Y2115/10
Inventor 胡家培胡民海
Owner XIAN ZHIHAI POWER TECH
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