Illumination device

A lighting device and vehicle technology, which can be applied to lighting devices, window lighting devices, sunshade lighting devices, etc., and can solve problems such as user glare

Inactive Publication Date: 2009-08-19
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, many luminaires provide direct lighting, where the light source emits light directly towards the target area, which can create undesired glare on the illuminated target area or on the user

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0069] Make the lamp assembly as follows. Light source LL1 was fixed to one end of a 7.6 cm x 12.7 cm x 6 mm open-faced plastic housing. A sheet of white polyester film was placed on the underside of the case. The light guide LG1 is arranged with its proximal edge adjacent to the LED and the light deflecting side facing the white polyester sheet. A sheet of 5 mil (127 microns) x 7.6 cm x 12.7 cm diffuser film (available under the trade designation "Lexan XL4251 Bottom Diffuser Film 0.005 White WH5A201X" from GE Polymershapes Film Division, Fairfield, Connecticut) was placed over the lightguide. above. Two orthogonal sheets of brightness enhancing film (available from 3M Company under the trade designation "Vikuiti BEF" (BEF)) were then placed on top of the diffuser film. The LED was illuminated with a mA power supply (commercially available from Hewlett-Packard, Palo Alto, CA, model number 6214).

example 2

[0071] Example 1 was repeated with LL1 replaced with LL2 and a sheet of enhanced specular reflector film (commercially available from 3M Company, St. Paul, MN) under the trade designation "WSR") was placed on top of the uppermost layer of the BEF. When the LED array is off, the lighting fixture has a reflective metallic or mirror-like appearance. Instead of this reflective metallic appearance, a substantially uniform red light emission was observed when the LED array was turned on.

example 3

[0073] Example 1 was repeated with a printed open weave fabric (available under the trade designation "TanThru" from Solar Fashion GmbH, Bandlach, Germany) placed on top of the BEF uppermost layer. When the LED array is off, the front of this lighting fixture maintains the printed look of the fabric. When the LED array was turned on, a substantially uniform emission of white light was observed instead of the fabric surface.

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PUM

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Abstract

The present invention is generally directed to illumination devices, and particularly directed to illumination devices which utilize thin light sources or edge-lit sources in combination with a light turning plate. The illumination devices may be used in a broad range of applications, and are particularly suited for the interior lighting of vehicles.

Description

technical field [0001] The present invention relates generally to lighting devices, and in particular to lighting devices utilizing unique cover materials. Background technique [0002] Luminaires are used to illuminate various surfaces or spaces. Examples of known light fixtures include dome lights in vehicles, lights attached to the exterior or interior of dwellings or buildings, and lights attached to appliances or implements. Many luminaires for these applications employ bulky housings that house the bulb and reflector. In addition, many light fixtures provide direct illumination, where the light source emits light directly towards the target area, which may create undesired glare in the illuminated target area or to the user. Contents of the invention [0003] In one embodiment, the invention relates to a lighting arrangement for vehicle interior lighting comprising: [0004] a. at least one light source, [0005] b. At least one light management device comprising...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60Q3/02F21Y101/00
CPCF21S48/2243G02B6/0035B60Q3/0213G02B6/0046G02B6/005G02B6/0053B60Q3/0283B60Q3/004F21S48/2268B60Q3/64B60Q3/208B60Q3/745B60Q3/54F21S43/239F21S43/245F21V7/00G02B6/0001
Inventor 马克·R·沃尔纳杰奎琳·A·韦德尔刘军钪丽贝卡·A·希普曼迈克尔·A·梅斯戈登·D·亨森迪安·J·斯蒂克尼古拉斯·A·李
Owner 3M INNOVATIVE PROPERTIES CO
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