# US 10,309,617 B2 · Phosphor wheel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,309,617 B2 - Document ID: US10309617B2 - Status: Granted - Kind: B2 - Application number: 15/467,300 - Filed: 2017-03-23 - Published: 2018-02-01 - Granted: 2019-06-04 - Earliest claimed: 2016-08-01 - Assignees: Delta Electronics, Inc. - Applicants: Delta Electronics, Inc. - Inventors: Keh-Su Chang; Yen-I Chou; Chi Chen; Chun-Hsien Lu - Web page: https://patentgrep.com/patent/US10309617B2 ## CPC - F21V 9/08: for producing coloured light, e.g. monochromatic; for reducing intensity of light (with provision for controlling the colour F21V9/40) - F21V 9/30: Elements containing photoluminescent material distinct from or spaced from the light source (shades F21V1/17; globes, bowls or cover glasses F21V3/08, F21V3/12; refractors F21V5/10; reflectors F21V7/26, F21V7/30; elements with provision for controlling the spectral properties or intensity F21V9/40) - F21V 9/45: by adjustment of photoluminescent elements - G03B 21/16: Cooling; Preventing overheating - G03B 21/204: {using secondary light emission, e.g. luminescence or fluorescence (using different colours G03B33/00; if related to video signals H04N9/3197)} - 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) ## Abstract A phosphor wheel includes a substrate, at least a phosphor agent and a plurality of vortex generators. The substrate has a first region and a second region. The second region has a plurality of openings. The phosphor agent is disposed on the first region for converting the wavelength of waveband light. Each vortex generator includes at least a guide vane. Each guide vane is disposed on the second region, and the projection, which is on the second region, of each guide vane is corresponded to one of the openings, such that a vortex is generated during a rotation of the substrate. Therefore, the efficiency of heat exchange is enhanced, the temperature of light spot is reduced, and further the output efficiency of light of the phosphor agent is increased. ## Claims ### Claim 1 A phosphor wheel applied to convert a wavelength of a waveband light, the phosphor wheel including: a substrate having a first region and a second region, wherein the second region has a plurality of openings; a phosphor agent disposed on the first region for converting the wavelength of the waveband light; and a plurality of vortex generators, wherein each vortex generator includes at least one guide vane disposed on the second region and projects over at least one of the openings, and wherein the vortex generator is configured to generate an airflow through the openings proximal to the guide vanes during a rotation of the phosphor wheel. ### Claim 2 (depends on 1) The phosphor wheel according to claim 1, wherein the substrate is circular and includes concentric regions and wherein the vortex generators are disposed circumferentially on the concentric regions. ### Claim 3 (depends on 2) The phosphor wheel according to claim 2, wherein each guide vane extends from the substrate, and a first angle formed between the guide vane and a planar face of the substrate is greater than or equal to 10 degrees and less than or equal to 90 degrees. ### Claim 4 (depends on 3) The phosphor wheel according to claim 3, wherein the guide vane includes a length extending from the substrate and the opening includes an aperture length, and wherein a ratio of the guide vane length to the corresponding aperture length is greater than or equal to 0.1 and less than or equal to 10. ### Claim 5 (depends on 4) The phosphor wheel according to claim 4, wherein each vortex generator includes two guide vanes symmetric with each other relative to the circumference of the concentric region. ### Claim 6 (depends on 5) The phosphor wheel according to claim 5, further including a second angle formed between one of the two guide vanes and a motion tangent direction of the substrate, and a third angle formed the two guide vanes, wherein the second angle is greater than or equal to 0 degree and less than or equal to 90 degrees, and wherein the third angle is greater than or equal to 0 degree and less than or equal to 180 degrees. ### Claim 7 (depends on 6) The phosphor wheel according to claim 6, wherein the two guide vanes and the third angle are configured to include a narrow opening end and a wide opening end, and wherein during the rotation of the phosphor wheel, the generated airflow includes an airstream entering the narrow opening end and an airstream exiting the wider opening end. ### Claim 8 (depends on 2) The phosphor wheel according to claim 2, wherein each vortex generator includes two guide vanes each extending at an angle from the substrate and each having a length along the circumferential direction of the concentric region, and wherein said lengths of the two vanes are the same, and wherein said angles of the two vanes are different. ### Claim 9 (depends on 2) The phosphor wheel according to claim 2, wherein each vortex generator includes two guide vanes each extending at an angle from the substrate and each having a length along the circumferential direction of the concentric region, wherein said lengths of the two vanes are different, and wherein said angles of the two vanes are the same. ### Claim 10 (depends on 2) The phosphor wheel according to claim 2, wherein each vortex generator includes two guide vanes each extending at an angle from the substrate and each having a length along the circumferential direction of the concentric region, and wherein said lengths of the two vanes are the different, and wherein said angles of the two vanes are different. ### Claim 11 (depends on 1) The phosphor wheel according to claim 1, wherein the first region is a wavelength conversion region, and the second region is a non-wavelength conversion region. ### Claim 12 (depends on 1) The phosphor wheel according to claim 1, wherein the guide vanes are formed by a bending of the substrate. ### Claim 13 (depends on 1) The phosphor wheel according to claim 1, wherein each guide vane includes a polygonal shape, and at least one edge of the polygonal shaped guide vane is connected with the substrate. ### Claim 14 (depends on 1) The phosphor wheel according to claim 1, wherein the projection of the guide vane over a corresponding opening and a shape of the corresponded opening are different. ### Claim 15 A phosphor wheel applied to convert a wavelength of a waveband light, the phosphor wheel including: a substrate having a first region and a second region, wherein the second region has a plurality of openings; a phosphor agent disposed on the first region for converting the wavelength of the waveband light; and a plurality of vortex generators, each vortex generator includes two symmetric guide vanes, wherein the two symmetric guide vanes are disposed on the second region and projects over a corresponding opening, such that a vortex is generated during a rotation of the substrate to effect a heat exchange through the opening. ### Claim 16 A phosphor wheel, including: a substrate having an uneven inner ring surface and an even outer ring surface, wherein the substrate is circular and includes concentric regions; a phosphor agent disposed on the even outer ring surface; and a plurality of guide vanes disposed on the uneven inner ring surface, wherein a rotation of the substrate generates a vortex of air flowing via the guide vanes, and every two neighboring guide vanes are symmetric with each other relative to a circumference of the corresponding concentric region. ### Claim 17 (depends on 16) The phosphor wheel according to claim 16, wherein the guide vanes are formed by cutting and bending the uneven inner ring surface of the substrate. ### Claim 18 (depends on 17) The phosphor wheel according to claim 17, wherein an opening is formed at each place cut corresponding to each guide vane, and each opening penetrates through the substrate. ### Claim 19 (depends on 18) The phosphor wheel according to claim 18, wherein a ratio of a length of each guide vane to an aperture length of the guide vane's corresponding opening is greater than or equal to 0.1 and less than or equal to 10. ### Claim 20 (depends on 17) The phosphor wheel according to claim 17, wherein each guide vane includes a protrusion extending from the substrate at an angle greater than or equal to 10 degrees and less than or equal to 90 degrees.