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Asymmetric LED street lamp lens

An LED street light, asymmetric technology, applied in lighting devices, outdoor lighting, light sources, etc., can solve the problems of glare and low energy utilization, reduce glare and zebra effect, reduce road traffic hidden dangers, and high energy utilization. Effect

Active Publication Date: 2015-04-29
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an asymmetric LED street lamp lens to solve the problems of "zebra effect", glare and low energy utilization rate in the prior art

Method used

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  • Asymmetric LED street lamp lens

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Embodiment Construction

[0026] The present case will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] This case involves an asymmetric LED street light lens, such as Figure 1-4 As shown, the lens includes a base surface 1 , an incident surface 2 and a light output surface 3 . Lenses are molded or injection molded from PMMA or glass material.

[0028] The base surface 1 of the lens is the bottom surface of the lens, and a recess is provided in the center of the lens to form the incident surface 2 of the lens. The cavity is used to place the LED light source 5, which can be a single high-power chip LED light source or a multi-chip integrated LED light source. The incident surface 2 of the lens can be a hemispherical surface, a semi-ellipsoidal surface or a free-form surface, and the diameter of the incident surface 2 can be 1-50 mm, preferably 3 mm in diameter.

[0029] The light-emitting surface 3 of the lens is a free-form surfa...

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Abstract

The invention discloses an asymmetric LED street lamp lens; the lens is symmetric along the central short axis, and asymmetric along the central long axis; the lens comprises a basal surface and a light outgoing surface; the center of the basal surface is hollowly provided with a concave pit in order to form an incident surface of the lens; the light outgoing surface is a discontinuously transitional free curve consisting of at least two pieces of free curves connected along the central long axis; both the at least two pieces of free curves incline to the same side along the central short axis. The provided lens is able to optimally distributing light of the LED light source; by an installation manner without an elevation, the light irradiating the car lanes is increased if the LED street lamp is provided with the lens, whereas the light irradiating the pavement is reduced, thereby greatly reducing the glare and increasing the utilization ratio of light energy; the asymmetric LED street lamp lens has a good application foreground in the field of illumination.

Description

technical field [0001] The invention belongs to the field of optical design, and in particular relates to an asymmetric LED street lamp lens. Background technique [0002] LED has the characteristics of high luminous efficiency, good stability and long life, and is widely used in indoor and outdoor lighting fixtures. Especially in the field of road lighting, LED street lamps have generally replaced traditional high-pressure sodium lamps. Since most LED street lighting focuses on the uniformity of illumination on the road surface, it often ignores the uniformity of road surface brightness, light environment requirements and glare limit threshold increments that are closely related to human vision, so it is easy to produce "zebra effect" and glare. There are certain road safety hazards. At the same time, traditional LED street lighting often adopts symmetrically distributed optical lenses, and its light distribution curve is symmetrical, and half of the light energy is irrad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V5/04F21W131/103F21Y101/02
CPCF21V5/043F21W2131/103F21Y2101/00
Inventor 郭震宁颜稳萍林介本
Owner HUAQIAO UNIVERSITY
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