# US 11,029,589 B2 · Laser light source optical projection architecture > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,029,589 B2 - Document ID: US11029589B2 - Status: Granted - Kind: B2 - Application number: 16/713,126 - Filed: 2019-12-13 - Published: 2021-03-04 - Granted: 2021-06-08 - Earliest claimed: 2019-09-03 - Assignees: Syndiant, Inc.; Xdmicro (Zhongshan) Optoelectronic Semiconductor Co., Ltd. - Applicants: Syndiant Inc. - Inventors: Chun Chiu Daniel Wong; Sheng Hsiung Chan - Web page: https://patentgrep.com/patent/US11029589B2 ## CPC - G03B 21/2033: {LED or laser light sources} - 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 21/2066: {Reflectors in illumination beam (in projection beam G03B21/28)} - G03B 33/08: Sequential recording or projection (G03B33/02, G03B33/04, G03B33/06 take precedence) - H04N 9/3111: {for displaying the colours sequentially, e.g. by using sequentially activated light sources (sequential projection in colour photography G03B33/08)} - H04N 9/3114: {by using a sequential colour filter producing one colour at a time} - H04N 9/3117: {by using a sequential colour filter producing two or more colours simultaneously, e.g. by creating scrolling colour bands} - H04N 9/3158: {for controlling the spectrum} - H04N 9/3161: {using laser light sources (using laser beams scanning the display screen H04N9/3129)} - H04N 9/3164: {using multiple light sources} - H04N 5/7416: {involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal} - 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 The present invention relates to a laser light source optical projection architecture, which comprises a laser light source group, a color control device, a phosphor device and an optical filter group. Accordingly, the laser light source optical projection architecture does not require to synchronize the phosphor device with the color field sequential display system, and the color control (ratios of the color duty) does not need to be determined in advance, i.e. at the time the color control device is manufactured. Various color field ratios can be achieved by adjusting positions of the specific color control device to obtain different red, blue and green color field durations, allowing easy electronic control of the color field duty cycles. ## Claims ### Claim 1 A laser light source optical projection architecture, comprising: a laser light source, configured to generate light; and a color control device configured as a transparent/reflective wheel with at least one segment plated with a reflective aluminum film, wherein the proportion of the reflective aluminum film segment to the transparent segment of the color control device is designed to vary from small to large with increasing radius, placed in a light path and forming an angle of 45 degrees with an optical axis, configured to split the light into reflected light and pass through light, and capable of moving along the 45-degree direction to adjust the ratio of pass through light to reflected light for color control. ### Claim 2 (depends on 1) The laser light source optical projection architecture of claim 1, comprising an electrically controlled light shutter group, which is capable of color control by adjusting different time proportions of red light, green light and blue light through synchronous adjustment of the color control device and the electrically controlled light shutter group. ### Claim 3 A laser light source optical projection architecture, comprising: a laser light source, configured to generate light; and a color control device, configured as an actuator having a special segment thereof plated with a film sheet, wherein the proportion of a reflective aluminum film segment to a transparent segment of the color control device is designed to vary from small to large as the laser light beam traverses the length of the device, the color control device placed in a light path and forming an angle of 45 degrees with an optical axis, configured to split the light into reflected light and pass through light, and capable of moving along the 45-degree direction to adjust the ratio of pass through light to reflected light for color control. ### Claim 4 (depends on 3) The laser light source optical projection architecture of claim 3, comprising an electrically controlled light shutter group, which is capable of color control by adjusting different time proportions of red light, green light and blue light through synchronous adjustment of the color control device and the electrically controlled light shutter group. ### Claim 5 A laser light source optical projection architecture, comprising: a laser light source group, comprising a first laser light source and a second laser light source that are respectively configured to generate a first light beam and a second light beam; a color control device, configured as a transparent/reflective wheel with a segment plated with a reflective aluminum film, placed in a first light beam path and forming an angle of 45 degrees with an optical axis, configured to split the first light beam into a reflected light beam and a third pass through light beam, and capable of moving along the 45-degree direction to adjust different time proportions of the first light beam and the third light beam for color control; a phosphor device, placed in a third light beam path and configured to generate green light beam by exciting a green phosphor; a second phosphor device, placed in a second light beam path and configured to generate red light beam by exciting a red phosphor; and an optical filter group, placed in the light beam path, having a first optical filter which reflects green light beam and allows other light beams to pass through, and a second optical filter which reflects red light beam and allows other light beams to pass through, and configured to guide the light beam to an optical-illumination system. ### Claim 6 (depends on 5) The laser light source optical projection architecture of claim 5, wherein the phosphor device and the second phosphor device may be stationary or rotated in a free-run mode. ### Claim 7 (depends on 6) The laser light source optical projection architecture of claim 6, wherein the proportion of the reflective aluminum film to a transparent segment of the color control device is designed to vary from small to large at various radii using an irregular symmetrical pattern. ### Claim 8 (depends on 6) The laser light source optical projection architecture of claim 6, wherein the color control device is an actuator having a special segment thereof plated with a film sheet. ### Claim 9 (depends on 8) The laser light source optical projection architecture of claim 8, wherein the proportion of the reflective aluminum film segment to the transparent segment of the color control device is designed to vary from small to large, traversing the length of the device. ### Claim 10 A laser light source optical projection architecture, comprising: a laser light source group, comprising a first laser light source and a second laser light source that are respectively configured to generate a first light and a second light; a color control device, being configured as a transparent/reflective wheel with a segment of the wheel plated with a reflective aluminum film, placed in a first light beam path and forming an angle of 45 degrees with an optical axis, configured to split the first light beam into a first reflected light beam and a third pass through light beam, and being capable of moving along the 45-degree direction to adjust different time proportions of the first light beam and the third light beam for color control; a phosphor device, placed in a third light beam path and configured to generate green light beam by exciting a green phosphor; and an optical filter group, placed in the light beam path, having a first optical filter which reflects green light beam and allows other light beams to pass through, and a second optical filter which reflects red light beam and allows other light beams to pass through, and configured to guide the light beam to the optical-illumination system. ### Claim 11 (depends on 10) The laser light source optical projection architecture of claim 10, wherein the phosphor device may be stationary or rotated in a free-run mode. ### Claim 12 (depends on 11) The laser light source optical projection architecture of claim 11, wherein the proportion of the reflective aluminum film to the transparent segment of the color control device, designed with an irregular asymmetrical pattern, varies from small to large at various radii. ### Claim 13 (depends on 11) The laser light source optical projection architecture of claim 11, wherein the color control device is an actuator having a special segment thereof plated with a film sheet. ### Claim 14 (depends on 13) The laser light source optical projection architecture of claim 13, wherein the proportion of the reflective aluminum film to the transparent segment of the color control device is designed to vary from small to large, traversing the length of the device. ### Claim 15 A laser light source optical projection architecture, comprising: a blue laser light source, configured to generate a first light; a color control device, configured as a transparent/reflective wheel with a segment plated with a reflective aluminum film, placed in a first light beam path and forming an angle of 45 degrees with an optical axis, configured to split the first light beam into a first reflected light beam and a third pass through light beam, and capable of moving along the 45-degree direction to adjust different time proportions of the first light beam and the third light beam for color control; a phosphor device, placed in a second light beam path and configured to excite a yellow phosphor to generate yellow light beam comprising a composition of red light beam and green light beam and an optical filter group, placed in the light beam path, having a first optical filter and a third optical filter which reflects the green light beam and allow other light beams to pass through, a second optical filter which only reflects the red light beam and allows other light beams to pass through, and a fourth optical filter which only reflects the first light beam and allows other light beams to pass through, and configured to guide the light beam to the optical-illumination system. ### Claim 16 (depends on 15) The laser light source optical projection architecture of claim 15, wherein the phosphor device may be stationary or rotated in a free-run mode. ### Claim 17 (depends on 16) The laser light source optical projection architecture of claim 16, wherein the proportion of the reflective aluminum film segment to the transparent segment of the color control device, designed with an irregular asymmetrical pattern, varies from small to large at various radii. ### Claim 18 (depends on 16) The laser light source optical projection architecture of claim 16, wherein the color control device is an actuator having a special segment thereof plated with a film sheet. ### Claim 19 (depends on 18) The laser light source optical projection architecture of claim 18, wherein the proportion of the reflective aluminum film to the transparent segment of the color control device is designed to vary from small to large, traversing the length of the device. ### Claim 20 (depends on 17) The laser light source optical projection architecture of claim 17, comprising an electrically controlled light shutter group, which is placed in a path of green light beam and red light beam, and is capable of color control by adjusting the different time proportions of red light beam, green light beam and blue light beam through synchronous adjustment of the color control device and the electrically controlled light shutter group. ### Claim 21 (depends on 19) The laser light source optical projection architecture of claim 19, comprising an electrically controlled light shutter group, which is placed in a path of green light beam and red light beam, and is capable of color control by adjusting the different time proportions of red light beam, green light beam and blue light beam through synchronous adjustment of the color control device and the electrically controlled light shutter group.