Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Waveguide based light source

a waveguide and light source technology, applied in the field of light sources, can solve the problems of extreme brightness, and achieve the effects of high power excitation and emission, small cross section, and high brightness

Inactive Publication Date: 2005-03-24
QUANTUM VISION
View PDF11 Cites 36 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is a device that uses a large area of phosphor film that is excited through conventional means. The device allows for high power excitation and emission. The phosphor emits a significant amount of light that is confined to one or more guided modes with a small cross section. These guided modes exit the device through one or more regions of similar small cross section, resulting in extremely high brightness. The technical effect of this invention is the creation of a device that can produce high-brightness light in a confined and efficient manner.

Problems solved by technology

These guided modes exit the device through one or more regions of similarly small cross section resulting in extremely high brightness.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Waveguide based light source
  • Waveguide based light source
  • Waveguide based light source

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] In the preferred embodiment the construction of the device is such that the guided modes have two dimensions which are of the order of a wavelength of light. One of these dimensions is given by the thickness 12, 14 of the thin film layer 16, 18 involved. This small dimension or thickness 12 can be formed by in-plane patterning.

[0017] The other in-plane dimension 20, 22 is sufficiently long in extent to produce a total area which may be many square centimeters. This one long dimension 20, 22 may consist of spirals or parallel lines so that a circular, rectangle, or other simple shape or surface area is substantially filled allowing for efficient broad area excitation.

[0018] The emitted light travels along the spirals or parallel lines and exits the device through “openings” approximately the same size as the small dimensions 12, 18 of the waveguide. FIG. 1 illustrates this spiral waveguide and is similar in appearance to a coiled garden hose.

[0019] In the simplest embodimen...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A wave guide based light source having a phosphor film with a large two-dimensional extent and a small thickness. The phosphor film is excited by an excitation means.

Description

[0001] This application is a continuation application of U.S. application Ser. No. 09 / 855,254, filed May 15, 2001, now U.S. patent application Publication No. 2003 / 0044160, Published Mar. 6, 2003 (QVIS-01057US1), which claims priority to Provisional Patent Application, S / C No. 60 / 204,645 filed May 17, 2000 (QVIS-01057US0).FIELD OF THE INVENTION [0002] The present invention relates to a light source comprising a phosphor film and a method of concentrating the emitted light. BACKGROUND OF THE INVENTION [0003] High brightness light sources are needed for many applications including optical fiber illumination and image projection. In optical fiber illumination, particularly for telecommunications applications, light-emitting diodes (LEDs), and semiconductor diode lasers are the dominant light sources as described in the article of Hecht, which is attached hereto and incorporated herein by reference (see Hecht, Jeff, Back to Basics: Fiber-optic Light Sources, Laser Focus World, January 2...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): F21V8/00F21V7/04G02B6/00H01J63/06H01LH05B33/00
CPCH01J63/06G02B6/0003
Inventor JONES, MICHIEAL L.JAFFE, STEVEN M.OLMSTED, BRIAN L.
Owner QUANTUM VISION
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com