TW201142199A - LED lamp or bulb with remote phosphor and diffuser configuration with enhanced scattering properties - Google Patents

LED lamp or bulb with remote phosphor and diffuser configuration with enhanced scattering properties Download PDF

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Publication number
TW201142199A
TW201142199A TW100107046A TW100107046A TW201142199A TW 201142199 A TW201142199 A TW 201142199A TW 100107046 A TW100107046 A TW 100107046A TW 100107046 A TW100107046 A TW 100107046A TW 201142199 A TW201142199 A TW 201142199A
Authority
TW
Taiwan
Prior art keywords
optical cavity
properties
phosphor carrier
bulb
light source
Prior art date
Application number
TW100107046A
Inventor
Tao Tong
Ronan Letoquin
Bernd Keller
Eric Tarsa
Mark Youmans
Theodore Lowes
Nicholas W Medendorp Jr
De Ven Antony Van
Gerald Negley
Original Assignee
Cree Inc
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
Priority to US33951510P priority Critical
Priority to US33951610P priority
Priority to US12/848,825 priority patent/US8562161B2/en
Priority to US38643710P priority
Priority to US12/889,719 priority patent/US9523488B2/en
Priority to US42466510P priority
Priority to US42467010P priority
Priority to US12/975,820 priority patent/US9052067B2/en
Priority to US201161434355P priority
Priority to US201161435326P priority
Priority to US201161435759P priority
Priority to US13/018,291 priority patent/US8882284B2/en
Application filed by Cree Inc filed Critical Cree Inc
Publication of TW201142199A publication Critical patent/TW201142199A/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Abstract

An LED lamp or bulb is disclosed that comprises a light source, a heat sink structure and an optical cavity. The optical cavity comprises a phosphor carrier having a conversions material and arranged over an opening to the cavity. The phosphor carrier comprises a thermally conductive transparent material and is thermally coupled to the heat sink structure. An LED based light source is mounted in the optical cavity remote to the phosphor carrier with light from the light source passing through the phosphor carrier. A diffuser dome is included that is mounted over the optical cavity, with light from the optical cavity passing through the diffuser dome. The properties of the diffuser, such as geometry, scattering properties of the scattering layer, surface roughness or smoothness, and spatial distribution of the scattering layer properties may be used to control various lamp properties such as color uniformity and light intensity distribution as a function of viewing angle.
TW100107046A 2010-03-03 2011-03-02 LED lamp or bulb with remote phosphor and diffuser configuration with enhanced scattering properties TW201142199A (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
US33951510P true 2010-03-03 2010-03-03
US33951610P true 2010-03-03 2010-03-03
US12/848,825 US8562161B2 (en) 2010-03-03 2010-08-02 LED based pedestal-type lighting structure
US38643710P true 2010-09-24 2010-09-24
US12/889,719 US9523488B2 (en) 2010-09-24 2010-09-24 LED lamp
US42466510P true 2010-12-19 2010-12-19
US42467010P true 2010-12-19 2010-12-19
US12/975,820 US9052067B2 (en) 2010-12-22 2010-12-22 LED lamp with high color rendering index
US201161434355P true 2011-01-19 2011-01-19
US201161435326P true 2011-01-23 2011-01-23
US201161435759P true 2011-01-24 2011-01-24
US13/018,291 US8882284B2 (en) 2010-03-03 2011-01-31 LED lamp or bulb with remote phosphor and diffuser configuration with enhanced scattering properties

Publications (1)

Publication Number Publication Date
TW201142199A true TW201142199A (en) 2011-12-01

Family

ID=46786020

Family Applications (1)

Application Number Title Priority Date Filing Date
TW100107046A TW201142199A (en) 2010-03-03 2011-03-02 LED lamp or bulb with remote phosphor and diffuser configuration with enhanced scattering properties

Country Status (1)

Country Link
TW (1) TW201142199A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104040716A (en) * 2012-01-17 2014-09-10 皇家飞利浦有限公司 Semiconductor light emitting device lamp that emits light at large angles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104040716A (en) * 2012-01-17 2014-09-10 皇家飞利浦有限公司 Semiconductor light emitting device lamp that emits light at large angles
CN104040716B (en) * 2012-01-17 2018-06-22 亮锐控股有限公司 The semiconductor light emitting device to emit light at a large angle

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