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Lens and lighting device equipped with the same

A lens and light source technology, which is applied to lighting devices, lighting device components, lighting and heating equipment, etc., can solve the problem that it is difficult to obtain a sufficiently slender and uniform light distribution pattern

Inactive Publication Date: 2017-01-18
OSRAM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the first type of lens, this lens has a smaller thickness, but the cylindrical stripes on this lens are evenly arranged, so it is impossible to fully control the light with different incident angles according to the optical principle
In addition, it is difficult to obtain a sufficiently slender and uniform light distribution pattern through such a lens with cylindrical stripes

Method used

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  • Lens and lighting device equipped with the same
  • Lens and lighting device equipped with the same
  • Lens and lighting device equipped with the same

Examples

Experimental program
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Effect test

Embodiment Construction

[0024] figure 1 A cross-sectional view of a lens according to the invention for a linear light source L is shown. The linear light source L extends inward perpendicular to the plane of the paper. The lens according to the present invention has a flat outer surface as the light exit surface F and an inner surface facing the light source L. As shown in FIG. In order to obtain a uniform strip-shaped spot on the premise of ensuring high light efficiency, the central area of ​​the inner surface of the lens is designed as the first protruding area 1 protruding toward the light source L, and the two sides of the first protruding area 1 are designed The second recessed area 2 that is symmetrically recessed away from the light source L, the edge area 3 of the second recessed area 2, that is, at least part of the edge area parallel to the extending direction of the light source L, is basically at the same level as the light source L, thereby roughly covering the light source L's range...

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PUM

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Abstract

The invention relates to a lens for a linear light source (L), characterized in that the lens includes an outer surface away from the light source (L) and an inner surface facing the light source (L), and the outer surface is a flat light-emitting surface (F ), the inner side includes a first protruding area (1) and a second recessed area (2) symmetrical to the first protruding area (1), wherein each second recessed area (2) forms a microstructure, from the light source (2 ) light is reflected to the light exit surface (F) after being refracted by the microstructure. In addition, the present invention also relates to an illuminating device equipped with the above-mentioned lens. The lens according to the present invention has a small thickness, and can comprehensively refract and internally reflect light with different incident angles, so as to obtain a uniform and elongated light distribution pattern.

Description

technical field [0001] The invention relates to a lens and an illuminating device equipped with the lens. Background technique [0002] Today, lighting devices are widely used in various fields in daily life. For example, strip lighting devices are often mounted on the edges of furniture, cabinets or other objects to be illuminated. For such lighting devices, it is usually necessary to obtain a strip-shaped light distribution. For this purpose, the lens is usually used as a lampshade of the strip lighting device for deflecting the outgoing light from the light source towards a predetermined angle. [0003] There are mainly two kinds of such lenses in the prior art, one is designed as a TIR (total internal reflection) extrusion lens, and the other is a lens with cylindrical stripes. For the TIR extrusion lens, the part of the outgoing light with a larger angle with the optical axis undergoes total internal reflection in the lens, while the part of the outgoing light with a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21V5/04F21Y115/10
CPCF21V5/04G02B19/0047G02B19/0014F21V7/0091F21S4/28F21V5/045F21Y2103/00
Inventor 张奇辉胡瑾曾军华黎安淼
Owner OSRAM GMBH