WO2005050262A3 - Dichroic beam combiner utilizing blue led with green phosphor - Google Patents

Dichroic beam combiner utilizing blue led with green phosphor Download PDF

Info

Publication number
WO2005050262A3
WO2005050262A3 PCT/US2004/038162 US2004038162W WO2005050262A3 WO 2005050262 A3 WO2005050262 A3 WO 2005050262A3 US 2004038162 W US2004038162 W US 2004038162W WO 2005050262 A3 WO2005050262 A3 WO 2005050262A3
Authority
WO
WIPO (PCT)
Prior art keywords
blue led
green phosphor
green
white
blue
Prior art date
Application number
PCT/US2004/038162
Other languages
French (fr)
Other versions
WO2005050262A2 (en
Inventor
Juan Carlos Minano
Pablo Benitez
William A Parkyn Jr
Original Assignee
Light Prescriptions Innovators
Juan Carlos Minano
Pablo Benitez
William A Parkyn Jr
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 Light Prescriptions Innovators, Juan Carlos Minano, Pablo Benitez, William A Parkyn Jr filed Critical Light Prescriptions Innovators
Publication of WO2005050262A2 publication Critical patent/WO2005050262A2/en
Publication of WO2005050262A3 publication Critical patent/WO2005050262A3/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/69—Details of refractors forming part of the light source
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B33/00—Colour photography, other than mere exposure or projection of a colour film
    • G03B33/10—Simultaneous recording or projection
    • G03B33/12—Simultaneous recording or projection using beam-splitting or beam-combining systems, e.g. dichroic mirrors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/61—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S362/00—Illumination
    • Y10S362/80—Light emitting diode

Abstract

A white beam (22W) with high color-rendering index is formed by uniting a collimated red beam (22R) and a collimated blue-green beam (22B), the latter having as it's source a blue LED (11) with a green phosphor (12). The white beam is formed by a prism (20)with an amber low-pass dichroic filter. The prism cross-section can be either a square or an equilateral triangle. The triangular prism can have one third of it's mass reduced by stepped facets. Both types of prisms can be elongated to accommodate multiple collimators. Switching between white, red, and blue-green allows application to police vehicles.
PCT/US2004/038162 2003-11-14 2004-11-12 Dichroic beam combiner utilizing blue led with green phosphor WO2005050262A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US52051303P 2003-11-14 2003-11-14
US60/520,513 2003-11-14

Publications (2)

Publication Number Publication Date
WO2005050262A2 WO2005050262A2 (en) 2005-06-02
WO2005050262A3 true WO2005050262A3 (en) 2009-05-22

Family

ID=34619475

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/038162 WO2005050262A2 (en) 2003-11-14 2004-11-12 Dichroic beam combiner utilizing blue led with green phosphor

Country Status (2)

Country Link
US (1) US7144121B2 (en)
WO (1) WO2005050262A2 (en)

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Also Published As

Publication number Publication date
US7144121B2 (en) 2006-12-05
US20050117125A1 (en) 2005-06-02
WO2005050262A2 (en) 2005-06-02

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