# US 2019/0170331 A1 · Optical converter colour wheel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0170331 A1 - Document ID: US20190170331A1 - Status: Published application - Kind: A1 - Application number: 16/173,022 - Filed: 2018-10-29 - Published: 2019-06-06 - Earliest claimed: 2015-06-12 - Assignees: Materion Corporation - Applicants: Materion Corporation - Inventors: Louisa Yu; Jie Fan; Xianjiang Wang - Web page: https://patentgrep.com/patent/US20190170331A1 ## CPC - F21S 41/16: Laser light sources - B60Q 1/02: the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments - F21S 41/125: Coloured light - F21S 41/176: Light sources where the light is generated by photoluminescent material spaced from a primary light generating element - F21S 41/192: {Details of lamp holders, terminals or connectors} - F21V 9/45: by adjustment of photoluminescent elements - F21V 17/002: {with provision for interchangeability, i.e. component parts being especially adapted to be replaced by another part with the same or a different function (F21V17/10 takes precedence)} - F21V 17/162: {the parts being subjected to traction or compression, e.g. coil springs} - G02B 7/006: {Filter holders} - G02B 26/008: {in the form of devices for effecting sequential colour changes, e.g. colour wheels} - G03B 21/204: {using secondary light emission, e.g. luminescence or fluorescence (using different colours G03B33/00; if related to video signals H04N9/3197)} - G03B 33/08: Sequential recording or projection (G03B33/02, G03B33/04, G03B33/06 take precedence) - G02B 1/11: Anti-reflection coatings - H04N 9/3158: {for controlling the spectrum} - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - 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) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A light converter comprises: a solid-state optical member configured to absorb light of an excitation wavelength and generate light of an emission wavelength; a base; and a mechanical fastener attaching the solid-state optical member to the base. The light converter may be part of a light engine, a phosphor wheel or an automotive headlight. A method of manufacturing such a phosphor wheel is also provided. ## Claims ### Claim 1 A light converter comprising: an annular solid-state optical member comprising a phosphor, the annular solid state optical member configured to absorb light of an excitation wavelength and generate light of an emission wavelength; a disk-shaped base; and a cover ring secured with the disk-shaped base and retaining the annular solid-state optical member by engaging an outer rim of the annular solid-state optical member. ### Claim 2 (depends on 1) The light converter of claim 1 wherein the annular solid state optical member comprises a plurality of color segments wherein the cover ring retains the color segments by engaging the outer rims of the color segment. ### Claim 3 (depends on 2) The light converter of claim 2 wherein the cover ring does not engage the inner rims of the color segments. ### Claim 4 (depends on 1) The light converter of claim 1 wherein the cover ring does not engage the inner rim of the annular solid-state optical member. ### Claim 5 (depends on 1) The light converter of claim 1 wherein the cover ring is secured with the disk-shaped base by plugs projecting from one of an outer flank of the disk-shaped base and the cover ring mated with corresponding notches of the other of the outer flank of the disk-shaped base and the cover ring. ### Claim 6 (depends on 1) The light converter of claim 1 wherein the outer rim of the annular solid-state optical member is disposed between the disk-shaped base and the cover ring. ### Claim 7 (depends on 1) The light converter of claim 1, wherein the annular solid-state optical member is configured to absorb blue light and generate yellow light and/or green light. ### Claim 8 (depends on 1) The light converter of claim 1, wherein the annular solid-state optical member comprises an annular ceramic phosphor member. ### Claim 9 (depends on 1) The light converter of claim 1, wherein the disk-shaped base includes a central opening. ### Claim 10 (depends on 1) A phosphor wheel comprising: the light converter of claim 1; and a motor arranged to rotate the disk-shaped base around an axis passing through the disk-shaped base and normal to a planar surface of the annular solid-state optical member. ### Claim 11 A phosphor wheel comprising: an annular ceramic phosphor member; a disk-shaped base; and a cover ring secured with the disk-shaped base and retaining the annular ceramic phosphor member by engaging an outer rim of the annular ceramic phosphor member. ### Claim 12 (depends on 11) The phosphor wheel of claim 11 wherein the cover ring does not engage the inner rims of the annular ceramic phosphor member. ### Claim 13 (depends on 11) The phosphor wheel of claim 11 wherein the cover ring is secured with the disk-shaped base by plugs projecting from one of an outer flank of the disk-shaped base and the cover ring mated with corresponding notches of the other of the outer flank of the disk-shaped base and the cover ring. ### Claim 14 (depends on 11) The phosphor wheel of claim 11 wherein the outer rim of the annular ceramic phosphor member is disposed between the disk-shaped base and the cover ring. ### Claim 15 (depends on 11) The phosphor wheel of claim 11, wherein the annular ceramic phosphor member is configured to absorb blue light and generate yellow light and/or green light. ### Claim 16 (depends on 11) The phosphor wheel of claim 11 wherein the disk-shaped base is configured for connection with a motor for rotating the disk-shaped base around an axis passing through the disk-shaped base and normal to a planar surface of the annular ceramic phosphor member by a threaded adapter or a central opening of the disk-shaped base. ### Claim 17 (depends on 11) The phosphor wheel of claim 11 further comprising: a motor connected with the disk-shaped base for rotating the disk-shaped base around an axis passing through the disk-shaped base and normal to a planar surface of the annular ceramic phosphor member. ### Claim 18 (depends on 11) The phosphor wheel of claim 11 wherein the annular ceramic phosphor member comprises a plurality of color segments wherein the cover ring retains the color segments by engaging the outer rims of the color segments. ### Claim 19 (depends on 18) The phosphor wheel of claim 18 wherein the cover ring does not engage the inner rims of the color segments. ### Claim 20 (depends on 18) A projector for generating color sequential illumination, the projector comprising: the phosphor wheel of claim 18; and a light source arranged to apply exciting light to the annular ceramic phosphor member.