WO1999002026A3 - Fluorescent dye added to epoxy of light emitting diode lens - Google Patents

Fluorescent dye added to epoxy of light emitting diode lens Download PDF

Info

Publication number
WO1999002026A3
WO1999002026A3 PCT/US1998/014939 US9814939W WO9902026A3 WO 1999002026 A3 WO1999002026 A3 WO 1999002026A3 US 9814939 W US9814939 W US 9814939W WO 9902026 A3 WO9902026 A3 WO 9902026A3
Authority
WO
WIPO (PCT)
Prior art keywords
lens
fluorescent dye
light
epoxy
light emitting
Prior art date
Application number
PCT/US1998/014939
Other languages
French (fr)
Other versions
WO1999002026A2 (en
Inventor
Mark M Butterworth
Rene P Helbing
Original Assignee
Hewlett Packard Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hewlett Packard Co filed Critical Hewlett Packard Co
Priority to JP2000501644A priority Critical patent/JP4574842B2/en
Priority to EP98935809.8A priority patent/EP1021817B1/en
Publication of WO1999002026A2 publication Critical patent/WO1999002026A2/en
Publication of WO1999002026A3 publication Critical patent/WO1999002026A3/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/50—Wavelength conversion elements
    • H01L33/505—Wavelength conversion elements characterised by the shape, e.g. plate or foil
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/58—Optical field-shaping elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/50—Wavelength conversion elements
    • H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
    • H01L33/502—Wavelength conversion materials
    • H01L33/504—Elements with two or more wavelength conversion materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/52—Encapsulations
    • H01L33/54—Encapsulations having a particular shape

Abstract

A process and apparatus is described to produce efficient light emission over a broad portion of the visible spectrum. A lens (240) containing a fluorescent dye is over molded to a short wavelength light emitter (110) such as a blue LED or laser diode placed within a reflector cup (120). The fluorescent dye absorbs at least a portion of the light emitted by the diode (110) and re-emits light of a second, longer wavelength. Concentration of the dye within the lens (240) can be varied to control the extent of a region within the lens where most of the light is re-emitted. One can readily and consistently tailor the color of the light emitted from the lens (240) through selection of the number and types of fluorescent dyes added to the lens.
PCT/US1998/014939 1997-07-14 1998-07-14 Fluorescent dye added to epoxy of light emitting diode lens WO1999002026A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2000501644A JP4574842B2 (en) 1997-07-14 1998-07-14 Light source and light source providing method
EP98935809.8A EP1021817B1 (en) 1997-07-14 1998-07-14 Light source comprising fluorescent organic dye and method of manufacturing the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/892,049 1997-07-14
US08/892,049 US5847507A (en) 1997-07-14 1997-07-14 Fluorescent dye added to epoxy of light emitting diode lens

Publications (2)

Publication Number Publication Date
WO1999002026A2 WO1999002026A2 (en) 1999-01-21
WO1999002026A3 true WO1999002026A3 (en) 1999-04-01

Family

ID=25399276

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/014939 WO1999002026A2 (en) 1997-07-14 1998-07-14 Fluorescent dye added to epoxy of light emitting diode lens

Country Status (4)

Country Link
US (1) US5847507A (en)
EP (1) EP1021817B1 (en)
JP (1) JP4574842B2 (en)
WO (1) WO1999002026A2 (en)

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WO1999002026A2 (en) 1999-01-21
EP1021817A4 (en) 2005-08-03
JP4574842B2 (en) 2010-11-04
JP2001512287A (en) 2001-08-21
US5847507A (en) 1998-12-08
EP1021817A1 (en) 2000-07-26
EP1021817B1 (en) 2013-11-20

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