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Light unit with light output pattern synthesized from multiple light sources

A technology of lamp components and optical components, applied in the field of LED-based light units, can solve problems such as LED wear and tear

Inactive Publication Date: 2011-08-03
SUNOVIA ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although white LEDs based on phosphors are relatively easier to manufacture, such LEDs suffer from Stokes energy loss (a condition in which shorter-wavelength photons, such as blue photons, are converted to longer-wavelength photons). photons (such as white photons) are lost)

Method used

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  • Light unit with light output pattern synthesized from multiple light sources
  • Light unit with light output pattern synthesized from multiple light sources
  • Light unit with light output pattern synthesized from multiple light sources

Examples

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Embodiment Construction

[0037] The present disclosure recognizes that it is desirable to manufacture a low-cost LED lamp that includes an array of LEDs in an LED-based lighting design. The present disclosure also recognizes that it is desirable to produce a uniform illumination pattern, or where a particular non-uniform illumination pattern is desired, to provide illumination of the desired pattern. Furthermore, the present disclosure recognizes that to further reduce costs, the number of LEDs that need to be collimated should also be minimized. The present disclosure provides light units meeting these criteria, as well as methods of producing such improved designs. Applications in which such lamps are to be used, such as roadway lighting, office or other workplace lighting, or residential lighting, have basic output pattern requirements. Such output map requirements may include a minimum illumination in foot-candles, and a range of illuminated areas depending on the height of the lights and the spa...

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PUM

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Abstract

The present disclosure provides an LED based light unit that produces an output lighting pattern that meets desired lighting characteristics using a reduced number of LED elements. The present disclosure provides a number of point sources that are directed into a desired direction such that, when combined with other point sources, a synthesized light output is provided that minimizes the LED headcount.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application No. 61 / 077,747, filed July 2, 2008, entitled "Light Unit With LightOutput Pattern Synthesized From Multiple Light Source," the entire disclosure of which is hereby incorporated by reference. technical field [0003] The present disclosure relates to LED-based light units, and more particularly, to LED-based light units that synthesize an output pattern using a reduced number of LED elements and reduced optics. Background technique [0004] Conventional lighting systems use a number of different types of lighting fixtures, typically including incandescent, fluorescent and light emitting diode (LED) based lamps. LED-based lamps generally rely on multiple diode elements to produce sufficient light required by a particular light system or lighting system. As a method for offsetting rising energy prices and placing meaningful orders on greenhouse gas pro...

Claims

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Application Information

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IPC IPC(8): F21S2/00F21V17/00F21V8/00F21Y101/02
CPCF21Y2101/02F21Y2111/002F21K9/00F21K9/13F21W2131/103F21S8/08F21K9/50F21K9/60F21Y2115/10F21Y2107/00F21Y2107/10F21K9/23
Inventor 唐纳德·赛普斯里克·考夫曼
Owner SUNOVIA ENERGY TECH