# US 2016/0366377 A1 · Scanning projector and method for operating a scanning projector > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0366377 A1 - Document ID: US20160366377A1 - Status: Published application - Kind: A1 - Application number: 15/049,689 - Filed: 2016-02-22 - Published: 2016-12-15 - Earliest claimed: 2015-06-11 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Jaehyuk LIM; Jaewook KWON; Woojae PARK - Web page: https://patentgrep.com/patent/US20160366377A1 ## CPC - H04N 9/3135: {Driving therefor} - G02B 26/0833: {the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD (G02B26/0825 takes precedence; micromechanical devices in general B81B)} - G02B 26/101: {with both horizontal and vertical deflecting means, e.g. raster or XY scanners (colour television using laser beams scanning a display screen H04N9/3129)} - G02B 26/123: {Multibeam scanners, e.g. using multiple light sources or beam splitters} - G03B 21/2033: {LED or laser light sources} - H04N 9/3129: {scanning a light beam on the display screen (scanning a light beam on a screen in displays other than projection devices G09G3/02; scanning systems in general G02B26/10; projectors using laser light sources in general H04N9/3161)} - H04N 9/3164: {using multiple light sources} - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - 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) ## Abstract A scanning projector and a method for operating a scanning projector including a light source module including a plurality of color light sources including at least one color light source provided in a plurality, and a scanner configured to execute scanning in the horizontal direction and the vertical direction using light beams emitted from the light source module. Light beams emitted from the plurality of same color light sources are projected on different positions on a screen within one frame and, thus, more rapid and effective scanning may be executed and a high-quality image may be formed. ## Claims ### Claim 1 A projector comprising: a light source module having a plurality of light sources, wherein each light source emits a light of a different color and at least one of the light sources includes a plurality of light emitting elements emitting same color light beams; and a scanner configured to execute scanning in a horizontal direction and a vertical direction using light beams emitted from the light source module, wherein same color light beams emitted from the light emitting element are projected onto different positions of a screen within one frame. ### Claim 2 (depends on 1) The projector according to claim 1, wherein the same color light beams emitted from the light emitting elements are reflected at different positions of the scanner within one frame. ### Claim 3 (depends on 1) The projector according to claim 1, wherein the scanner scans continuous frames in the same manner using the light beams emitted from the light source module. ### Claim 4 (depends on 1) The projector according to claim 1, wherein the light emitting elements are aligned such that projected same color light beams differ from each other by 1 pixel on the screen. ### Claim 5 (depends on 1) The projector according to claim 1, wherein the light source module includes red, green and blue laser diodes. ### Claim 6 (depends on 1) The projector according to claim 1, further including collimating lenses provided in front of the light source module to convert the light beams emitted from the light source module into parallel light beams. ### Claim 7 (depends on 6) The projector according to claim 6, wherein the collimating lenses are aligned such that projected same color light beams differ from each other by 1 pixel on the screen. ### Claim 8 (depends on 1) The projector according to claim 1, wherein turning-on/off of one of the light emitting elements is delayed as compared to the remaining light emitting elements. ### Claim 9 (depends on 1) The projector according to claim 1, further including light combining devices to combine the light beams emitted from the light source module. ### Claim 10 (depends on 1) The projector according to claim 1, further including: a light source driver configured to drive the light source module; and a scanner driver configured to control scanning of the scanner in the horizontal direction and scanning of the scanner in the vertical direction. ### Claim 11 (depends on 10) The projector according to claim 10, wherein the light source driver drives the light source module such that turning-on/off of one of the light emitting elements is delayed as compared to the remaining light emitting elements. ### Claim 12 (depends on 10) The projector according to claim 10, wherein the scanner driver drives the scanner such that scanning of the scanner in the horizontal direction is executed along a sinusoidal waveform and scanning of the scanner in the vertical direction is executed along a sawtooth waveform. ### Claim 13 A method for operating a projector, comprising: driving a light source module having a plurality of light sources wherein each light source emits a light of a different color from the other light sources and at least one of the light sources includes a plurality of light emitting elements emitting same color light beams; and executing scanning in a horizontal direction and a vertical direction through a scanner using light beams emitted from the light source module, wherein same color light beams emitted from the light emitting elements are projected on different positions of a screen within one frame. ### Claim 14 (depends on 13) The method according to claim 13, wherein the same color light beams emitted from the light emitting elements are reflected at different positions of the scanner within one frame. ### Claim 15 (depends on 13) The method according to claim 13, further including executing scanning of continuous frames in the same manner. ### Claim 16 (depends on 13) The method according to claim 13, wherein the same color light beams emitted from the light emitting elements differ from each other by 1 pixel on the screen. ### Claim 17 (depends on 13) The method according to claim 13, wherein the light source module is driven such that turning-on/off of one of the light emitting elements is delayed as compared to the remaining light emitting elements. ### Claim 18 (depends on 13) The method according to claim 13, wherein scanning of the scanner in the horizontal direction is executed along a sinusoidal waveform and scanning of the scanner in the vertical direction is executed along a sawtooth waveform. ### Claim 19 (depends on 13) The method according to claim 13, further including combining the light beams emitted from the light source module. ### Claim 20 A projector comprising: a light source module having a first light source including a plurality of light sources each emitting a different color light and a second light source including a plurality of light sources each emitting a different color light, wherein at least two of the light sources include a plurality of light emitting elements emitting same color light beams; and a scanner configured to execute scanning in the horizontal direction and the vertical direction using light beams emitted from the light source module, wherein light beams emitted from the first light source and light beams emitted from the second light source are projected on different positions on a screen within one frame.