# US 11,898,742 B2 · Spotlight LED light source > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,898,742 B2 - Document ID: US11898742B2 - Status: Granted - Kind: B2 - Application number: 17/640,783 - Filed: 2020-08-11 - Published: 2022-10-20 - Granted: 2024-02-13 - Earliest claimed: 2019-09-06 - Assignees: Arnold & Richter Cine Technik GmbH & Co. Betriebs KG - Applicants: Arnold & Richter Cine Technik GmbH & Co. Betriebs KG - Inventors: Erwin Melzner - Web page: https://patentgrep.com/patent/US11898742B2 ## CPC - F21K 9/62: using mixing chambers, e.g. housings with reflective walls - F21V 7/041: {with conical or pyramidal surface} - F21V 19/0035: {the fastening means being capable of simultaneously attaching of an other part, e.g. a housing portion or an optical component} - F21W 2131/406: for theatres, stages or film studios - F21Y 2105/12: characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities - F21Y 2115/10: Light-emitting diodes [LED] - 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 - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS - 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 ## Abstract A light source for a spotlight includes a carrier, a plurality of LEDs of different colors arranged on the carrier, a lensless collector optical system for collecting and mixing light from the LEDs, an output optical system for projecting the light from the collector optical system, and a control device for controlling the LEDs. ## Claims ### Claim 1 A light source for a spotlight, comprising: (i) a carrier with a single-layer circuit board, a plurality of LEDs of N>2 different color arranged on the carrier, and an N number of current lines for supplying the LEDs, the current lines forming no crossing regions in a vertical projection of an envelope of the LEDs; (ii) a lensless collector optical system for collecting and mixing the light emanating from the LEDs; (iii) an output optical system position to receive light from the collector optical system and outputting it towards a desired area; (iv) at least one control device for controlling the plurality of LEDs; (v) a holder, wherein the collector optical system is embedded in the holder, and the holder having a front face adjoining the output optical system, and a rear face with a flange portion; and (vi) a coupling layer configured to attach the flange portion to the carrier. ### Claim 2 (depends on 1) The light source according to claim 1, wherein neither individual lenses for the LEDs nor an individual lens array are provided between the output optical system and the LEDs. ### Claim 3 (depends on 1) The light source according to claim 1, wherein the collector optical system forms a primary optical unit of the light source and does not comprise a lens arrangement with at least one lens spanning the entirety of the LEDs. ### Claim 4 (depends on 1) The light source according to claim 1, wherein the output optical system (comprises a substrate on which a light-scattering layer is applied, wherein the substrate covers a light exit end of the collector optical system. ### Claim 5 (depends on 1) The light source according to claim 1, wherein the output optical system covers the light exit end of the collector optical system so that the interior of the collector optical system is environmentally sealed at the light exit end. ### Claim 6 (depends on 1) The light source according to claim 1, wherein the carrier is a ceramic carrier, and the lines are formed as conductor tracks applied to the carrier, by being laminated onto the carrier or deposited thereon by means of a physical or chemical process. ### Claim 7 (depends on 1) The light source according to claim 1, wherein the output optical system comprises a diffuser. ### Claim 8 (depends on 7) The light source according to claim 7, wherein the diffuser is a holographic diffuser. ### Claim 9 (depends on 1) A spotlight for illuminating at least one of a film, studio, stage, event, or theater environment, the spotlight comprising a light source according to claim 1. ### Claim 10 (depends on 9) The spotlight according to claim 9, wherein the output optical system is attached to a housing of the spotlight and environmentally seals the spotlight at this location. ### Claim 11 (depends on 1) The light source according to claim 1, wherein the collector optical system comprises an internally mirror-coated reflector that surrounds the entirety of the LEDs and, in the interior of the reflector, mixes the light emanating from each of the LEDs and outputs it, with a reduction in the emission angle, at a light exit end of the reflector. ### Claim 12 (depends on 11) The light source according to claim 11, wherein the reflector is formed from a mirrored sheet metal winding. ### Claim 13 (depends on 11) The light source according to claim 11, wherein neither individual lenses for the LEDs nor an individual lens array are provided between the output optical system and the LEDs. ### Claim 14 (depends on 11) The light source according to claim 11, wherein the reflector is formed with a polygonal cross-sectional area increasing in the light exit direction. ### Claim 15 (depends on 14) The light source according to claim 14, wherein the reflector is formed from a mirrored sheet metal winding. ### Claim 16 (depends on 11) The light source according to claim 11, wherein the output optical system directly adjoins the light exit end of the reflector. ### Claim 17 (depends on 16) The light source according to claim 16, wherein the reflector is formed with a polygonal cross-sectional area increasing in the light exit direction. ### Claim 18 (depends on 16) The light source according to claim 16, wherein the reflector is formed from a mirrored sheet metal winding. ### Claim 19 A light source for a spotlight, comprising: (i) a carrier with a single-layer circuit board, a plurality of LEDs of N>2 different color arranged on the carrier, and an N number of current lines for supplying the LEDs; (ii) a lensless collector optical system for collecting and mixing the light emanating from the LEDs; (iii) an output optical system position to receive light from the collector optical system and outputting it towards a desired area; (iv) at least one control device for controlling the plurality of LEDs; (v) a holder, wherein the collector optical system is embedded in the holder, and the holder having a front face adjoining the output optical system, and a rear face with a flange portion; and (vi) a coupling layer configured to attach the flange portion to the carrier; wherein crossing regions of the current lines in at least one of in the carrier, above the carrier, or below the carrier, are formed exclusively in those regions which do not overlap any vertical projection of each of the LEDs.