# US 2014/0192527 A1 · Integrated led-based luminaire for general lighting > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0192527 A1 - Document ID: US20140192527A1 - Status: Published application - Kind: A1 - Application number: 13/757,919 - Filed: 2013-02-04 - Published: 2014-07-10 - Earliest claimed: 2007-10-09 - Assignees: Koninklijke Philips Electronics N.V. - Applicants: Koninklijke Philips Electronics N.V. - Inventors: Kevin J. DOWLING; Ihor A. Lys; Ryan C. Williamson; Brian Roberge; Ron Roberts; Frederick Morgan; Michael Jay Datta; Tomas Jonathan Mollnow - Web page: https://patentgrep.com/patent/US20140192527A1 ## CPC - F21K 9/60: Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction - H05B 45/28: using temperature feedback - H05B 45/3725: Switched mode power supply [SMPS] - H05B 45/375: using buck topology - H10W 90/754: {between a chip and a stacked insulating package substrate, interposer or RDL} - Y02B 20/30: Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED] - 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 - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS ## Abstract Lighting apparatus and methods employing LED light sources are described. The LED light sources are integrated with other components in the form of a luminaire or other general purpose lighting structure. Some of the lighting structures are formed as Parabolic Aluminum Reflector (PAR) luminaires, allowing them to be inserted into conventional sockets. The lighting structures display beneficial operating characteristics, such as efficient operation, high thermal dissipation, high output, and good color mixing. ## Claims ### Claim 1 An illumination apparatus comprising: an LED-based light source (150) comprising a first die (202) and a second die (204) coupled to a substrate (206), the first die configured to produce a first spectrum of radiation (503) and the second die configured to produce a second spectrum of radiation (505), the LED-based light source further comprising a primary optic (203) having first texturing (205, 207) on at least a portion thereof; and a secondary optic (160) coupled to the LED-based light source (150) and configured to collimate light produced by the LED-based light source (150), wherein the secondary optic has second texturing (167) on at least a portion of a light receiving surface of the secondary optic. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the primary optic comprises a hemispherical lens (203) raised a distance (H1) above the substrate (206). ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the secondary optic forms an exit aperture through which light produced by the LED-based light source passes, and wherein there is no diffusing element across the exit aperture. ### Claim 4 (depends on 1) The apparatus of claim 1, further comprising a heat sink to which the LED-based light source is thermally coupled, and a thermal connector mounted in or on the heat sink. ### Claim 5 (depends on 4) The apparatus of claim 4, further comprising an element mechanically coupled to the heat sink and having a cavity therein for receiving power circuitry for providing power to the LED-based light source, the element configured to mate to a screw base. ### Claim 6 (depends on 5) The apparatus of claim 5, further comprising the power circuitry, and a flexible circuit interconnecting the LED-based light source and the power circuitry. ### Claim 7 (depends on 4) The apparatus of claim 4, further comprising a housing formed of electrically non-conducting material, and wherein the LED-based light source, the secondary optic, and the heat sink are disposed within the element. ### Claim 8 (depends on 7) The apparatus of claim 7, wherein the housing defines one or more holes configured to facilitate heat dissipation. ### Claim 9 (depends on 8) The apparatus of claim 8, further comprising a cover lens coupled to the housing, wherein the cover lens and housing in combination substantially surround the LED-based light source, the secondary optic, and the heat sink. ### Claim 10 (depends on 4) The apparatus of claim 4, wherein the thermal connector is a copper plug. ### Claim 11 (depends on 10) The apparatus of claim 10, wherein the copper plug has a first surface raised above the heat sink, and wherein the LED-based light source is mounted on the first surface of the copper plug. ### Claim 12 (depends on 11) The apparatus of claim 11, further comprising a temperature sensor mounted within or proximate to the heat sink and thermally coupled to the LED-based light source. ### Claim 13 (depends on 1) The apparatus of claim 1, wherein the secondary optic has an exit aperture, and wherein the apparatus further comprises a diffuser disposed across the exit aperture.