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Illumination systems utilizing light emitting diodes and light recycling to enhance output radiance

A technology of light-emitting diodes and lighting systems, which is applied in the field of lighting systems and can solve problems such as uncomfortable displays

Inactive Publication Date: 2007-05-30
GOLDENEYE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coherent semiconductor laser sources typically have higher brightness than incoherent sources, but are unsuitable for many applications such as displays due to the formation of undesired speckle light patterns arising from the coherent nature of light

Method used

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  • Illumination systems utilizing light emitting diodes and light recycling to enhance output radiance
  • Illumination systems utilizing light emitting diodes and light recycling to enhance output radiance
  • Illumination systems utilizing light emitting diodes and light recycling to enhance output radiance

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Embodiment Construction

[0045] [0033] Those skilled in the art will better understand the preferred embodiments of the present invention with reference to the above drawings. The preferred embodiments of the invention shown in the drawings are not intended to be exhaustive or to limit the invention to the precise forms disclosed. The drawings were chosen to describe or best explain the principles of the invention and its applicable and practical use to enable others skilled in the art to best utilize the invention.

[0046] [0034] Embodiments of the invention include at least a light source, a light-recycling envelope, and a light output aperture located on a surface of the light-recycling envelope.

[0047] [0035] A preferred light source of the present invention comprises at least one light emitting diode (LED). Preferred LEDs are inorganic light emitting diodes and organic light emitting diodes (OLEDs), which both emit and reflect light. More preferred LEDs are inorganic light emitting diodes du...

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PUM

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Abstract

An illumination system has a light source that is at least partially enclosed within a light-recycling envelope. The light source is a light-emitting diode that emits light, and a fraction of that light will exit the light-recycling envelope through an aperture. The light-recycling envelope recycles part of the light emitted by the light source back to the light source in order to enhance the output radiance of the light exiting the illumination system.

Description

[0001] Cross References to Related Applications [0002] [0001] This application is a continuation-in-part of US Patent Application No. 10445136, entitled "Lighting System Using Highly Reflective Light Emitting Diodes and Light Recycling to Enhance Brightness," which is hereby incorporated by reference. This application is also related to U.S. Patent Application No. ______, entitled "Illumination System Utilizing Multi-Wavelength Light Recycling," and U.S. Patent Application No. ______, entitled "Projection Display System Utilizing Light Emitting Diodes and Light Recycling," both of which are related to This application was filed concurrently and is hereby incorporated by reference. technical field [0003] [0002] The present invention relates to lighting systems that include light emitting diodes (LEDs). Light emitting diodes include inorganic light emitting diodes and organic light emitting diodes (OLEDs). Background technique [0004] [0003] The illumination system is u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01K1/26F21V7/00F21V9/06F21V9/14G02B17/06G02B17/08G02B19/00H01L33/60
CPCF21K9/00G02B19/0061G02B17/0668G02B19/0019G02B19/00G02B19/0028F21V5/041H01L33/60G02B17/0868G02B17/0673F21K9/68
Inventor 卡尔·比森斯科特·齐默尔曼
Owner GOLDENEYE