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Low-glare LED-based lighting unit

A technology for light-emitting units and light-emitting equipment, which is applied to optical elements for changing the spectral characteristics of emitted light, semiconductor devices for light-emitting elements, light sources, etc., and can solve the problem of reducing the light output efficiency of light-emitting equipment and insufficiently reducing glare And other issues

Active Publication Date: 2012-08-15
SIGNIFY HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While such lighting fixtures can help reduce the amount of glare, they may not sufficiently reduce glare and / or also reduce the light output efficiency of the lighting fixture through one or more light output reflections.

Method used

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  • Low-glare LED-based lighting unit
  • Low-glare LED-based lighting unit
  • Low-glare LED-based lighting unit

Examples

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Embodiment Construction

[0035] Various lighting fixtures have been designed that implement LED light sources. LED light sources have many known benefits, but often produce substantial glare due to the generally "point-source" nature of LEDs. Some LED-based street lighting fixtures have been designed that attempt to target all of the LEDs by moving away from the desired lighting area and utilize one or more redirecting optical lenses and / or redirecting reflectors to direct the light output from the LEDs toward Re-orient the desired illuminated area to compensate for glare from the LEDs. While such lighting fixtures may help reduce the amount of glare, they may not sufficiently reduce glare, may reduce the efficiency of the lighting fixture, and / or may require a different reflector for each different light output and / or or optical lenses. Accordingly, Applicants have recognized and appreciated that it would be beneficial to have a low glare LED-based lighting unit having vertically extending individu...

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PUM

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Abstract

The present disclosure is directed to inventive methods and apparatus for a low-glare LED-based lighting unit (110). The low-glare LED-based lighting unit (110) may have vertically extending LED support structure (120) and an array of individually aimed LEDs (133) coupled to the vertically extending LED support structure (120). At least one vertically extending translucent inner lens (150 / 260) may be provided adjacent a plurality of the LEDs (133) and intersect the LED light output axis (A) of a plurality of the LEDs (133).

Description

technical field [0001] The present invention is generally directed to low glare lighting units employing solid state light sources. More specifically, the various inventive methods and apparatus disclosed herein relate to low-glare LED-based lighting units that may be installed in lighting fixtures for illuminating selected lighting areas. Background technique [0002] Digital lighting technology (ie, lighting based on semiconductor light sources such as light emitting diodes (LEDs)) offers a viable alternative to traditional fluorescent, HID and incandescent lamps. Functional advantages and benefits of LEDs include high energy conversion and optical efficiency, durability, low operating costs, and the like. Recent advances in LED technology have provided efficient and robust full-spectrum lighting sources that enable a variety of lighting effects in many applications. Some fixtures implementing these sources feature a lighting unit that includes one or more LEDs capable o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21K99/00F21S8/08F21W131/103F21Y101/02
CPCF21K9/00F21S8/088F21V3/02F21V9/08F21W2131/103F21V31/005F21Y2115/10F21Y2107/00F21Y2113/13F21V5/04
Inventor E.罗思S.巴茨多拉
Owner SIGNIFY HLDG BV