High-light-efficiency and anti-dazzling LED directional lamp based on forward Fresnel lens and backward Fresnel lens
A Fresnel lens, high light efficiency technology, applied in the light source, electric light source, point light source, etc., can solve the problem of secondary light distribution design illumination uniformity difficult to control, medium power chip module low light efficiency, COB chip price Advanced problems, to achieve the effect of improving optical efficiency, increasing central light intensity, and reducing light loss
Active Publication Date: 2015-11-04
HENGDIAN GRP TOSPO LIGHTING
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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
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[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 installed at the bottom of the reflector, and the reverse Fresnel lens 4 is suspended 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-em...
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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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Login to View More IPC IPC(8): F21S2/00F21V5/04F21V13/04F21Y101/02
CPCF21V5/045F21V13/04
Inventor 胡太荣陈亮药左红龚伊陆凌云张军
Owner HENGDIAN GRP TOSPO LIGHTING