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High-efficiency anti-glare led directional light based on positive and negative two-way Fresnel lens

A Fresnel lens and high light efficiency technology, which is applied to light sources, components of lighting devices, semiconductor devices of light-emitting elements, etc., can solve the problem of difficult control of illuminance uniformity in secondary light distribution design, and low light of medium-power chip modules. It can improve the optical efficiency, increase the central light intensity, and reduce the light loss.

Active Publication Date: 2017-05-17
HENGDIAN GRP TOSPO LIGHTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the price of COB chips in the lighting industry at home and abroad remains high, and the medium-power chip module has become the favorite because of its low price. However, due to the relative independence of a single light source chip, PC lens design or aluminum-plated reflection is generally used in the secondary light distribution design. device, resulting in the following technical problems in the secondary light distribution of LED directional lights: 1. The medium-power chip module has low light efficiency and high energy consumption, and the power of replacing halogen lamps is generally low; 2. The uniformity of illumination in the secondary light distribution design Difficult to control

Method used

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  • High-efficiency anti-glare led directional light based on positive and negative two-way Fresnel lens
  • High-efficiency anti-glare led directional light based on positive and negative two-way Fresnel lens
  • High-efficiency anti-glare led directional light based on positive and negative two-way Fresnel lens

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Embodiment

[0034] Such as figure 1 , figure 2 As shown, this embodiment is based on the high-efficiency anti-glare LED directional light of the positive and negative two-way Fresnel lens, including the LED substrate 1, the reflector 2, the forward Fresnel lens 3 and the reverse Fresnel lens 4, the described The reflector 2 is arranged on the LED substrate 1, the forward Fresnel lens 3 is arranged in the cavity of the reflector 2, the forward Fresnel lens 3 is suspended on the bottom of the reflector, and the reverse Fresnel lens The lens 4 is set on the top of the reflector 2; the geometric center of the medium power module is used as the reference point, and the chip light-emitting angle is divided into two ring parts of 0°-γ° and γ°-90°, and the optics of the two parts are independently designed .

[0035] In order to achieve a better light output effect, in this embodiment, the LED substrate 1 is provided with a plurality of LED light-emitting diodes, and the plurality of LED light...

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Abstract

The invention discloses a high-light-efficiency and anti-dazzling LED directional lamp based on a forward Fresnel lens and a backward Fresnel lens. The LED directional lamp comprises an LED substrate, a reflector, the forward Fresnel lens and the backward Fresnel lens. The reflector is arranged on the LED substrate. The forward Fresnel lens is arranged in a cavity of the reflector. The forward Fresnel lens is installed at the bottom of the reflector. The backward Fresnel lens is arranged on the top of the reflector in a suspended and erected manner. The light emitting angle of a chip is divided into a ring belt part of 0 degree-gamma degrees and a ring belt part of gamma degrees-90 degrees with the geometric center of the LED substrate as a reference point. According to a suspension structure, the forward Fresnel lens is designed, the optical path is shortened, the light losses are reduced, the optical efficiency is improved by 5% and the central light strength is improved by 30%. In addition, the forward Fresnel lens and the backward Fresnel lens can achieve a light gathering effect, the function of improving the central light strength is achieved, and a high-power halogen lamp can be replaced.

Description

technical field [0001] The invention relates to the research field of LED light distribution, in particular to a high-efficiency anti-glare LED directional light based on a front and back bidirectional Fresnel lens. Background technique [0002] At present, the price of COB chips in the lighting industry at home and abroad remains high, and the medium-power chip module has become the favorite because of its low price. However, due to the relative independence of a single light source chip, PC lens design or aluminum-plated reflection is generally used in the secondary light distribution design. device, resulting in the following technical problems in the secondary light distribution of LED directional lights: 1. The medium-power chip module has low light efficiency and high energy consumption, and the power of replacing halogen lamps is generally low; 2. The uniformity of illumination in the secondary light distribution design difficult to control. Therefore, an anti-glare ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21K9/20F21V5/04F21V13/04F21K9/69F21Y115/10
CPCF21V5/045F21V13/04
Inventor 胡太荣陈亮药左红龚伊陆凌云张军
Owner HENGDIAN GRP TOSPO LIGHTING
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