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Lens for LED street lamp

A technology of LED street lights and lenses, applied in the field of LED lighting, can solve problems such as far away from each other, and achieve the effect of eliminating blind spots of irradiation, reducing the number, and reducing the phenomenon of light flickering.

Inactive Publication Date: 2010-02-17
SHANGHAI SANSI ELECTRONICS ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, at present, the light spot illuminated by most LED street lights on the road surface is circular, which is far from the actual situation that the road needs to be illuminated uniformly along the road surface.

Method used

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  • Lens for LED street lamp
  • Lens for LED street lamp
  • Lens for LED street lamp

Examples

Experimental program
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Effect test

Embodiment Construction

[0020] Figure 1 to Figure 4 The first embodiment of the lens for LED street lamps shown in the present invention includes a bottom surface 1 for mounting the lens, and a pit 2 for mounting the LED is provided in the middle, the inner surface of the pit constitutes the incident surface of the lens, and the entire lens is butterfly-shaped. The pit 2 shown in the figure is hemispherical, of course, it can also be designed into other shapes according to different LEDs and light distribution requirements, such as: cylindrical, cylindrical with a concave arc surface or a convex arc surface, etc. Also included in the figure is the outer surface constituting the exit face. When the lens is installed with the LED, the optical axis of the LED is located at the center of the pit. There is a groove 3 with a wide mouth and a narrow bottom on the outer surface. The groove 3 extends from the top of the outer surface to the side edge of the bottom surface, and the shape of the outer surface...

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Abstract

The invention provides a lens for an LED street lamp. The lens comprises a planar mounting bottom surface, the middle part of the planar mounting bottom surface is provided with a concave pit in whichan LED is arranged, and the inner surface of the concave pit forms an incident surface of the lens; the lens also comprises an outer surface for forming a ray emergent surface; the outer surface of the lens is provided with a groove with a wide opening and a narrow bottom, the groove is extended to the side edge of the mounting bottom surface from the top part of the outer surface to the lower part of the lateral surface, the shapes of the lens are in bilateral symmetry distribution at two sides of the groove, and the inner surface of the groove forms a part of the emergent surface; and the shape of the emergent surface of the lens can be set into a curved surface, a plane or a combination of a curved surface and a plane according to requirements. After the structure is adopted, the directions of transmitted rays can be reasonably oriented, the distances of the rays irradiated along the road direction (called as horizontal direction) are enlarged, and the illumination is evener.

Description

technical field [0001] The invention relates to the field of LED lighting, in particular to a lens used for LED street lamps. Background technique [0002] As LED light sources gradually replace traditional light sources, the advantages of LED lighting fixtures have been gradually recognized by people. For example, using LEDs in the field of road lighting can bring many advantages such as improving light efficiency, energy saving, and environmental protection. [0003] However, at present, most LED street lamps irradiate the light spot on the road surface in a circular shape, which is far from the actual situation that the road needs to be illuminated uniformly along the road surface. The ideal state should be: the light along the direction of the road is spread as much as possible, and the light in the direction perpendicular to the road can be effectively controlled to improve the uniformity of road surface illumination, so that drivers have better visual conditions and re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V5/04F21W131/103F21Y101/02
CPCF21Y2101/02F21W2131/103Y02B20/72F21V5/04F21Y2115/10
Inventor 陈必寿王鹰华顾肖冬陆平叶烨
Owner SHANGHAI SANSI ELECTRONICS ENG
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