# US 2020/0401029 A1 · Light assembly for a projector > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0401029 A1 - Document ID: US20200401029A1 - Status: Published application - Kind: A1 - Application number: 16/915,003 - Filed: 2020-06-29 - Published: 2020-12-24 - Earliest claimed: 2016-03-23 - Inventors: George Erik McMillan - Web page: https://patentgrep.com/patent/US20200401029A1 ## CPC - F21V 14/06: by movement of refractors {(in vehicle head lamps F21S41/635)} - G03B 21/2033: {LED or laser light sources} - F21K 9/235: Details of bases or caps, i.e. the parts that connect the light source to a fitting; Arrangement of components within bases or caps (F21K9/238 takes precedence) - F21V 5/04: of lens shape - F21V 5/045: {the lens having discontinuous faces, e.g. Fresnel lenses} - F21V 17/02: with provision for adjustment (F21V17/04 - F21V17/08 take precedence) - F21V 17/06: the fastening being onto or by the lampholder - F21V 17/12: by screwing - F21V 23/02: the elements being transformers, impedances {or power supply units, e.g. a transformer with a rectifier} - F21V 23/06: the elements being coupling devices {, e.g. connectors} - F21V 29/67: characterised by the arrangement of fans - F21V 29/713: {in direct thermal and mechanical contact of each other to form a single system} - G03B 21/145: {Housing details, e.g. position adjustments thereof} - G03B 21/16: Cooling; Preventing overheating - G03B 21/208: {Homogenising, shaping of the illumination light} - F21W 2131/406: for theatres, stages or film studios - F21Y 2115/10: Light-emitting diodes [LED] - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - 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 (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D) - 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 - 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 In one aspect, a light assembly configured to be installed in a movie theatre projector includes an emitter housing with an LED emitter plate that emits a beam of light and a lens assembly. The light assembly also includes a cooling assembly configured to dissipate heat from the LED emitter plate. The a cooling assembly includes a cooling fluid jacket coupled to the LED emitter plate, where the cooling fluid jacket comprises a metal layer enclosing a hollow path for cooling fluid, and where the cooling fluid jacket is configured to allow the cooling fluid to pass through cooling fluid jacket, thereby drawing heat from the LED emitter plate. The light assembly also includes a heat sink and a cooling fan. The cooling assembly further includes cooling sections to cool the cooling fluid that flows out of the cooling fluid jacket. ## Claims ### Claim 1 A light assembly configured to be installed in a projector, the light assembly comprising: an adaptor configured to mechanically couple to a bulb mount of the projector; at least one Light Emitting Diode (LED) emitter; a heat sink configured to dissipate heat from the at least one LED emitter; a cooling device configured to transfer heat away from the heat sink; a lens mounting unit; and a lens configured to receive and redirect light emitted from the at least one LED emitter, wherein the lens is attached to the lens mounting unit. ### Claim 2 (depends on 1) The light assembly of claim 1, wherein the cooling device is a fan or a liquid circulating system. ### Claim 3 (depends on 1) The light assembly of claim 1, wherein the cooling device comprises one or more elements connected to the heat sink. ### Claim 4 (depends on 1) The light assembly of claim 1, wherein the at least one LED emitter is connected to the heat sink. ### Claim 5 (depends on 1) The light assembly of claim 1, wherein the lens assembly is configured to collimate light emitted from the at least one LED emitter. ### Claim 6 (depends on 1) The light assembly of claim 1, wherein the lens assembly is configured to adjust at least one of a size and a pitch of the beam of light emitted from the at least one LED emitter. ### Claim 7 (depends on 1) The light assembly of claim 1, wherein the adaptor comprises a cylindrical extension. ### Claim 8 (depends on 7) The light assembly of claim 7, wherein the cylindrical extension comprises screw threading configured to mate with screw threading of an internal surface of the bulb mount of the projector. ### Claim 9 (depends on 1) The light assembly of claim 1, wherein the adaptor is configured receive power from the bulb mount when the adaptor is mechanically coupled to the bulb mount. ### Claim 10 A light assembly configured to be installed in a projector, the light assembly comprising: an adaptor configured to mechanically couple to a bulb mount of the movie theatre projector; an emitter housing that comprises an emitter plate; at least one LED directly or indirectly attached to the emitter plate and configured to emit a beam of light; a lens assembly configured to receive and redirect light emitted from the at least one LED; and a cooling assembly configured to dissipate heat from the LED emitter plate, wherein the cooling assembly comprises: a heat sink coupled to the emitter plate, wherein the heat sink is configured to draw heat from the LED emitter plate. ### Claim 11 (depends on 10) The light assembly of claim 10, further comprising a first cooling device coupled to the heat sink. ### Claim 12 (depends on 11) The light assembly of claim 11, wherein the first cooling device is a fan. ### Claim 13 (depends on 10) The light assembly of claim 10, wherein the heat sink comprises one or more thermal transfer pads. ### Claim 14 (depends on 11) The light assembly of claim 11, wherein the first cooling device has one or more cooling elements disposed around a portion of the periphery of the first cooling device. ### Claim 15 (depends on 11) The light assembly of claim 11, wherein the first cooling device comprises a cooling jacket coupled to the heat sink, and wherein the first cooling device is configured to run cooling fluid through the cooling jacket. ### Claim 16 (depends on 15) The light assembly of claim 15, wherein the first cooling device is located between the heat sink and the emitter plate. ### Claim 17 (depends on 15) The light assembly of claim 15, further comprising one or more sensors that detect temperature information and send the temperature information to a control system of the light system. ### Claim 18 (depends on 17) The light assembly of claim 17, wherein the control system controls the flow of fluid through the cooling jacket based upon the temperature information. ### Claim 19 (depends on 15) The light system of claim 15, wherein the cooling jacket comprises internal flow path configured to flow the cooling fluid through the flow jacket. ### Claim 20 A light assembly configured to be installed in a projector, the light assembly comprising: an adaptor configured to mechanically couple to a bulb mount of the projector; at least one Light Emitting Diode (LED) emitter; a cooling device configured to dissipate or transfer heat away from the at least one LED emitter; and a lens configured to receive and redirect light emitted from the at least one LED emitter, wherein the lens is attached to a lens mounting unit.