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Waveguide apparatus for illumination systems

A technology of a waveguide device and a lighting system, applied in the field of manufacturing the device, can solve the problems of insignificant efficacy and the like

Active Publication Date: 2014-03-12
L E S S
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these techniques are less effective at efficiently producing illumination with a broadband visible component (herein also referred to as white light) and ensuring uniformity of this illumination along the length of the fiber

Method used

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  • Waveguide apparatus for illumination systems
  • Waveguide apparatus for illumination systems
  • Waveguide apparatus for illumination systems

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Embodiment Construction

[0021] This disclosure describes a waveguide suitable for an efficient distributed illumination system that produces white light at a location remote from the primary light source with a radiation pattern (including its radial angle and radial spread) and uniformity along the The waveguide length can be easily controlled. A discussion of some terms used herein is first given, followed by a description of various embodiments of the device in conjunction with the figures. When the shapes, relative positions, and other aspects of components described in the embodiments are not clearly defined, the scope of the present invention is not limited only to the illustrated components, which are for illustrative purposes only. Additionally, while numerous details have been set forth, it is understood that some embodiments of the invention may be practiced without these details. In other instances, well-known structures and techniques have not been shown in detail in order not to obscure...

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Abstract

A waveguide (100, 101) such as optical fiber is to receive a primary light in a longitudinal (propagation) direction. The fiber has formed therein scattering structures (105, 106, 107) that re-direct the propagating primary light out of the waveguide, for instance in a transverse direction. A photo-luminescent layer (103) absorbs the re-directed primary light to thereby emit secondary wavelength converted light having a different wavelength than and broader bandwidth than the primary light, resulting in white illumination light, being the secondary light combined with any unabsorbed primary light. Other embodiments are also described and claimed.

Description

[0001] related application [0002] This application claims the benefit of the earlier filing date of US Provisional Patent Application No. 61 / 480,216, filed April 28, 2011, entitled "Waveguide Apparatus for Illumination Systems." technical field [0003] Embodiments of the present invention generally relate to a cylindrical waveguide device that can be used as part of a distributed lighting system to illuminate white light in a more directional, more uniform intensity, and more energy efficient manner. Another embodiment is a method for manufacturing the device. Other implementations are also described. Background technique [0004] In a basic fiber optic lighting system, a light source fires light into an optical fiber, which is then used to transport the incoming light to a desired location over a long distance. At this remote location, the optical fiber is usually bare at its end face, so that light can exit and illuminate a remote area outside and close to the end fac...

Claims

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Application Information

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IPC IPC(8): G02B6/00F21V8/00
CPCG02B6/001G02B6/0003G02B6/0005Y10T29/49002G02B6/0026G02B6/0028G02B6/0031
Inventor 杨·蒂索
Owner L E S S