# US 10,874,002 B2 · Method and apparatus for computing illumination mixed lights, computer device and storage medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,874,002 B2 - Document ID: US10874002B2 - Status: Granted - Kind: B2 - Application number: 16/420,182 - Filed: 2019-05-23 - Published: 2020-08-06 - Granted: 2020-12-22 - Earliest claimed: 2019-02-01 - Assignees: Dongguan Star Mount Trading Co., Ltd. - Applicants: Dongguan Star Mount Trading Co., Ltd. - Inventors: Chen-Yuan Hsu; Shou-Cheng Wu - Web page: https://patentgrep.com/patent/US10874002B2 ## CPC - H05B 45/20: Controlling the colour of the light - H05B 47/155: Coordinated control of two or more light sources - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL ## Abstract The present application relates to a method for computing illumination mixed lights. The method includes the following. Acquire a first chromaticity coordinate point corresponding to a first colored light, and acquire a second chromaticity coordinate point corresponding to a second colored light. Acquire a target chromaticity coordinate point, and compute a first lumen mixing ratio of the first colored light and the second colored light. Determine a middle chromaticity coordinate point corresponding to a middle-colored light obtained by mixing according to the first lumen mixing ratio. Determine a first compensation colored light and a second compensation colored light which are matched with the middle chromaticity coordinate point. Conduct compensation computation on the middle colored light, and determine a second lumen mixing ratio corresponding to the first compensation colored light, the second compensation colored light and the middle colored light when mixed to the target chromaticity coordinate point. ## Claims ### Claim 1 A method for computing illumination mixed lights from a light source, comprising: acquiring a first chromaticity coordinate point corresponding to a first colored light, and acquiring a second chromaticity coordinate point corresponding to a second colored light; acquiring a target chromaticity coordinate point, and computing a first lumen mixing ratio of the first colored light and the second colored light according to the target chromaticity coordinate point, the first chromaticity coordinate point and the second chromaticity coordinate point; determining a middle chromaticity coordinate point corresponding to a middle-colored light obtained by mixing the first colored light and the second colored light according to the first lumen mixing ratio; determining a first compensation colored light and a second compensation colored light according to the middle chromaticity coordinate point and the target chromaticity coordinate point; and conducting compensation computation on the middle-colored light according to the first compensation colored light and the second compensation colored light, and determining a second lumen mixing ratio corresponding to the first compensation colored light, the second compensation colored light and the middle colored light to become the target chromaticity coordinate point. ### Claim 2 (depends on 1) The method according to claim 1, wherein the step of determining the first compensation colored light and the second compensation colored light according to the middle chromaticity coordinate point and the target chromaticity coordinate point comprises: acquiring a third chromaticity coordinate point corresponding to a third colored light, a fourth chromaticity coordinate point corresponding to a fourth colored light and a fifth chromaticity coordinate point corresponding to a fifth colored light; determining a color gamut range of the target chromaticity coordinate point according to the third chromaticity coordinate point, the fourth chromaticity coordinate point, the fifth chromaticity coordinate point and the middle chromaticity coordinate point; and selecting two colored lights as the first compensation colored light and the second compensation colored light from the third colored light, the fourth colored light and the fifth colored light according to the color gamut range. ### Claim 3 (depends on 2) A computer device, comprising a memory and a processor, wherein the memory stores computer programs that, when executed by the processor, enable the processor to execute steps of the method in claim 2. ### Claim 4 (depends on 2) The method according to claim 2, wherein the step of determining the color gamut range of the target chromaticity coordinate point according to the third chromaticity coordinate point, the fourth chromaticity coordinate point, the fifth chromaticity coordinate point and the middle chromaticity coordinate point comprises: respectively computing triangle areas formed by any three points of the third chromaticity coordinate point, the fourth chromaticity coordinate point, the fifth chromaticity coordinate point, the middle chromaticity coordinate point and the target chromaticity coordinate point; determining a target triangle area matched with the target chromaticity coordinate point according to the computed triangle areas; and using the target triangle area as the color gamut range corresponding to the target chromaticity coordinate point. ### Claim 5 (depends on 4) A computer device, comprising a memory and a processor, wherein the memory stores computer programs that, when executed by the processor, enable the processor to execute steps of the method in claim 4. ### Claim 6 (depends on 1) The method according to claim 1, wherein the steps of conducting compensation computation on the middle colored light according to the first compensation colored light and the second compensation colored light and determining the second lumen mixing ratio corresponding to the first compensation colored light, the second compensation colored light and the middle colored light to become the target chromaticity coordinate point comprises: acquiring a first compensation chromaticity coordinate point of the first compensation colored light, and acquiring a second compensation chromaticity coordinate point of the second compensation colored light; and determining a second lumen mixing ratio corresponding to the first compensation colored light, the second compensation colored light and the middle-colored light to become the target chromaticity coordinate point according to the first compensation chromaticity coordinate point, the second compensation chromaticity coordinate point and the middle chromaticity coordinate point. ### Claim 7 (depends on 6) A computer device, comprising a memory and a processor, wherein the memory stores computer programs that, when executed by the processor, enable the processor to execute steps of the method in claim 6. ### Claim 8 (depends on 1) The method according to claim 1, wherein the method further comprises: acquiring a color temperature corresponding to the target chromaticity coordinate point, and acquiring a mixing ratio of the first colored light, the second colored light, the first compensation colored light and the second compensation colored light corresponding to the target colored light; and storing the color temperature and the corresponding mixing ratio. ### Claim 9 (depends on 8) The method according to claim 8, wherein the method further comprises: determining a target color temperature corresponding to the current illumination according to a preset condition, and determining a target mixing ratio corresponding to the target color temperature according to the correspondence between the color temperature and the mixing ratio; and mixing the first colored light, the second colored light, the first compensation colored light and the second compensation colored light according to the target mixing ratio to obtain the target colored light corresponding to the target color temperature. ### Claim 10 (depends on 9) A computer device, comprising a memory and a processor, wherein the memory stores computer programs that, when executed by the processor, enable the processor to execute steps of the method in claim 9. ### Claim 11 (depends on 8) A computer device, comprising a memory and a processor, wherein the memory stores computer programs that, when executed by the processor, enable the processor to execute steps of the method in claim 8. ### Claim 12 (depends on 1) The method according to claim 1, wherein the step of determining a middle chromaticity coordinate point corresponding to a middle-colored light obtained by mixing the first colored light and the second colored light according to the first lumen mixing ratio comprises: acquiring a target lumen value, and determining a first lumen value corresponding to the first colored light and a second lumen value corresponding to the second colored light according to the target lumen and the first lumen mixing ratio; and determining a middle chromaticity coordinate point corresponding to the middle-colored light obtained by mixing the first colored light and the second colored light according to the first lumen and the second lumen. ### Claim 13 (depends on 12) A computer device, comprising a memory and a processor, wherein the memory stores computer programs that, when executed by the processor, enable the processor to execute steps of the method in claim 12. ### Claim 14 (depends on 1) A computer device, comprising a memory and a processor, wherein the memory stores computer programs that, when executed by the processor, enable the processor to execute steps of the method in claim 1. ### Claim 15 An apparatus for computing illumination mixed lights, comprising: a processor, configured to: acquire a first chromaticity coordinate point corresponding to a first colored light and acquiring a second chromaticity coordinate point corresponding to a second colored light; acquire a target chromaticity coordinate point and computing a first lumen mixing ratio of the first colored light and the second colored light according to the target chromaticity coordinate point, the first chromaticity coordinate point and the second chromaticity coordinate point; determine a middle chromaticity coordinate point corresponding to a middle-colored light obtained by mixing the first colored light and the second colored light according to the first lumen mixing ratio; determine a first compensation colored light and a second compensation colored light according to the middle chromaticity coordinate point and the target chromaticity coordinate point; and conduct compensation computation on the middle colored light according to the first compensation colored light and the second compensation colored light and determining a second lumen mixing ratio corresponding to the first compensation colored light, the second compensation colored light and the middle colored light to become the target chromaticity coordinate point.