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Lens and omnidirectional illumination device with same

An all-round technology for lighting devices, applied in lighting devices, lighting device parts, cooling/heating devices of lighting devices, etc., can solve the problem of omnidirectional lighting without a lens, and achieve a simple manufacturing process and uniform light distribution , the effect of low manufacturing cost

Active Publication Date: 2013-07-31
LEDVANCE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] None of the above-mentioned schemes proposes a scheme to realize omni-directional lighting through lens design

Method used

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  • Lens and omnidirectional illumination device with same
  • Lens and omnidirectional illumination device with same
  • Lens and omnidirectional illumination device with same

Examples

Experimental program
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Embodiment Construction

[0037] figure 2 is a schematic diagram of the rotation pair forming figure of the first embodiment of the lens formed by rotation according to the present invention. The lens 10 according to the invention is designed to be rotationally symmetrical. therefore, figure 2 It shows a rotationally symmetric figure finally formed by rotation of the lens 10 according to the present invention, that is, shows a cross-sectional profile diagram of a quadrant of the lens. The rotationally symmetrical figure includes a top edge, a bottom edge and a side edge connecting the top edge and the bottom edge. The top, bottom, and sides are rotated to form the top, bottom, and sides connecting the top and bottom of the lens 10 .

[0038] image 3 is a cross-sectional complete profile view of the first embodiment of the lens 10 according to the present invention. It can be seen from the figure that the complete profile diagram of the cross-section of the lens 10 obtained after rotation. comb...

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Abstract

The invention relates to a lens (10) used for omnidirectional illumination, which is characterized in that the lens (10) is rotationally symmetric and comprises a light incident surface (1), a first light refraction surface (2), a first light reflection surface (3), a second light refraction surface (4), and a third light refraction surface (5) rotationally and symmetrically designed respectively, wherein a first part (A1) of light transmitting through the light incident surface (1) is refracted for emergence by the first light refraction surface (2) to generate first emergent light (B1); a second part (A2) of the light transmitting through the light incident surface (1) is reflected to the second light refraction surface (4) by the first light reflection surface (3), and refracted for emergence by the second light refraction surface (4) to generate second emergent light (B2); a third part (A3) of the light transmitting through the light incident surface (1) is refracted for emergence by the third light refraction surface (5) to generate third emergent light (B3); and the omnidirectional illumination is achieved by the first emergent light (B1), the second emergent light (B2) and the third emergent light (B3) together. The lens has the advantages that the lens is low in manufacturing cost, simple in manufacturing technology, and uniform in light distribution, and achieves the omnidirectional illumination.

Description

technical field [0001] The invention relates to a lens and an omnidirectional lighting device with the lens. Background technique [0002] Since the LED light source has the advantages of long life, energy saving, environmental protection, anti-vibration, etc., the LED light source can be applied in a wide range of fields. With the continuous development of manufacturing technology, the cost of LED is getting lower and lower and the light efficiency is also increased. Solid-state lighting (SSL) has become a trend to replace traditional light-emitting devices. [0003] The Energy Star standard in the United States is for full-range SSL replacement lamps (see attached figure 1 ) put forward certain requirements. In the area of ​​0-135 degrees, the difference between the light intensity at any angle and the average light intensity in the area of ​​0-135 degrees is not higher than 20%. The luminous flux in the area of ​​135-180 degrees should account for at least 5% of the t...

Claims

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Application Information

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IPC IPC(8): F21V5/04
CPCF21K9/50F21V29/2231F21K9/135F21V7/0091F21Y2101/02F21V5/04F21K9/232F21K9/60F21V29/773F21Y2115/10F21V13/04
Inventor 林雪琴程迎军
Owner LEDVANCE GMBH
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