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Light emitting diode (LED) secondary optical lens

A technology of secondary optical lens and total reflection surface, applied in the direction of light source, point light source, lighting device, etc., can solve the problems affecting LED lighting performance, luminous flux attenuation, etc., to achieve high effective light energy utilization, high uniformity, Even lighting effect

Inactive Publication Date: 2012-04-04
东莞市耀富实业投资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, light cups and reflective disks are mostly used in the secondary light distribution of LEDs to improve the uniformity of LED illumination. However, the existing technical solutions make the beams cross-reflect or refract multiple times, and the luminous flux is attenuated to a considerable extent. Affect the light performance of LED

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  • Light emitting diode (LED) secondary optical lens
  • Light emitting diode (LED) secondary optical lens
  • Light emitting diode (LED) secondary optical lens

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Embodiment Construction

[0040] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, and to analyze the advantages and spirit of the present invention, a further understanding of the present invention can be obtained through the following detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments.

[0041] As shown in the drawings of the description, the present invention includes an incident surface 1, a total reflection surface 2 and an exit surface 3, and the bottom of the total reflection surface 2 is provided with an LED light source groove 5, and the LED light source groove 5 is used to place an LED light source 4 . The exit surface 3 is a cross-shaped curved surface, and the cross-shaped curved surface is composed of a concave surface 31 with the same smooth transition structure in the horizontal direction and a vertical direction and a convex surface 32 with a ...

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Abstract

The invention discloses a light emitting diode (LED) secondary optical lens, which is simple in structure and uniform in illumination. The LED secondary optical lens comprises an incident surface, a fully reflecting surface and an exit surface, wherein the exit surface is a cross curved surface, and the cross curved surface consists of concave surfaces which have the same structure and are in smooth transition in the horizontal direction and the vertical direction and convex surfaces which are positioned between the concave surfaces in the horizontal direction and the vertical direction and convex surfaces and are in smooth transition; and the exit surface is arranged right above the fully reflecting surface, and the fully reflecting surface has conical structure and covers the whole incident surface. The LED secondary optical lens is reasonable in structural design and good in condensation effect, forms a square light spot in an irradiation plane, is uniform in illumination, effectively restrains glare, is more uniform in illumination, and can effectively improve the utilization rate of light.

Description

technical field [0001] The invention relates to a secondary optical lens of an LED lamp, in particular to an LED secondary optical lens with a square light spot. Background technique [0002] With the continuous advancement of LED manufacturing technology, compared with traditional light sources, LEDs are small in size, and can even be treated as electric light sources in many applications, which brings great convenience to the optical design of lamps. At the same time, the use of large The shading and absorption effects of light sources that occur in traditional light source lamps and lanterns do not exist. At present, the luminous efficacy of high-power white LEDs has reached 100lm / w, and the luminous efficacy of stable products is also above 90lm / w. This light effect makes it possible for LEDs to enter general lighting, especially in road lighting and other directional lighting fields that have gradually been applied. However, because the current price of LEDs is much hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V5/04F21Y101/02
Inventor 张道强
Owner 东莞市耀富实业投资有限公司
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