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Lens and asymmetric light distribution lighting device comprising same

A technology of lens and light, applied in lighting devices, parts of lighting devices, lighting and heating equipment, etc., can solve problems such as difficult to obtain asymmetric light distribution effects, and achieve the effect of reducing the overall size

Inactive Publication Date: 2013-05-08
OSRAM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in an asymmetric light distribution lighting device, when a linear light source made of an LED lighting device is used as a light source, it is difficult to obtain the asymmetric light generated by the existing common asymmetric light distribution lighting device through the existing wall lighting reflector. Symmetrical light distribution effect

Method used

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  • Lens and asymmetric light distribution lighting device comprising same
  • Lens and asymmetric light distribution lighting device comprising same
  • Lens and asymmetric light distribution lighting device comprising same

Examples

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Embodiment Construction

[0021] figure 1 A cross-sectional view of one embodiment of a lens according to the invention is shown. It can be seen from the figure that the lens according to the present invention has a top and a bottom, wherein the bottom includes the incident surface 1 and the first supporting surface 4a and the second supporting surface 4b respectively located on both sides of the incident surface 1, and the top includes the outgoing surface 2. The top also has a total internal reflection surface 3, wherein, viewed in cross section, the exit surface 2 is connected to the first support surface 4a, the total internal reflection surface 3 is connected to the second support surface 4b, and a part of the light of the linear light source passes through the incident surface 1 Refracted with the exit surface 2 and then exit, and another part of the light is refracted from the incident surface 1 to the total internal reflection surface 3 and then refracted by the exit surface 2 after total inter...

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Abstract

The invention relates to a lens for a linear light source. The lens is provided with a top portion and a bottom portion, wherein the bottom portion comprises an incidence plane (1) and a first bearing surface (4a) and a second bearing surface (4b) positioned on two sides of the incidence plane (1), and the top portion comprises an emergent surface (2) and a total internal reflection surface (3). Viewed from a cross section, the emergent surface (2) is connected to the first bearing surface (4a), the total internal reflection surface (3) is connected to the second bearing surface (4b), one part of light rays of the linear light source is emitted onto the incidence plane (1) and emitted out after being reflected via the emergent surface (2), and the other part of the light rays is emitted onto the incidence plane (1) and emitted out via the emergent surface (2) after the total internal reflection by the total internal reflection surface (3). In addition, the invention further relates to an asymmetric light distribution lighting device comprising the lens.

Description

technical field [0001] The invention relates to a lens for a linear light source. In addition, the present invention also relates to an asymmetrical light distribution lighting device having the above-mentioned type of lens. Background technique [0002] Asymmetrical light distribution lighting devices are used in many different fields of application, such as museums, booths at trade fairs, exhibitions, stores, promotional exhibition areas, and the like. This type of illuminating device specifically illuminates the exhibited content or items without illuminating other areas, so that viewers can clearly observe the details of the exhibited content or items. In today's asymmetrical light distribution lighting devices, T5 fluorescent tubes are usually used as linear light sources. The light emitted by the T5 fluorescent tube is deflected toward a predetermined direction by the wall lighting reflector fixed on the housing. [0003] However, due to the continuous improvement o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V5/04F21V5/08F21Y101/02
CPCG02B17/086G02B19/0047F21V5/043G02B19/0028F21K9/58F21Y2101/02F21V5/08F21V5/04F21K9/65F21Y2115/10
Inventor 张奇辉林晶胡瑾黎安淼
Owner OSRAM GMBH
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