# US 2025/0146643 A1 · Illumination module > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0146643 A1 - Document ID: US20250146643A1 - Status: Published application - Kind: A1 - Application number: 18/938,210 - Filed: 2024-11-05 - Published: 2025-05-08 - Earliest claimed: 2023-11-08 - Assignees: Qisda Corporation - Applicants: Qisda Corporation - Inventors: Chao-Shun Yu; Cheng-Chieh Juan; Wen-Chang Chen; Chun-Sheng Hu - Web page: https://patentgrep.com/patent/US20250146643A1 ## CPC - F21S 41/675: by moving reflectors - F21S 41/25: Projection lenses - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS ## Abstract An illumination module includes a light source configured to emit an illumination light beam, a reflective light valve disposed on a path of the illumination light beam and configured to form a plurality of pixels, a lens, and an image sensing module. Each pixel is adapted to be switched between a first state and a second state. The pixels in the first state among the pixels are configured to reflect the illumination light beam into an effective light beam. The pixels in the second state among the pixels are configured to reflect the illumination light beam into a complementary light beam. The lens is disposed on a path of the effective light beam and configured to project the effective light beam to an area to be illuminated. The image sensing module is disposed on a path of a complementary light beam from the reflective light valve and configured to sense the complementary light beam. ## Claims ### Claim 1 An illumination module, comprising: a light source, configured to emit an illumination light beam; a reflective light valve, disposed on a path of the illumination light beam, and configured to form a plurality of pixels, wherein each pixel is adapted to be switched between a first state and a second state, the pixels in the first state among the pixels are configured to reflect the illumination light beam into an effective light beam, and the pixels in the second state among the pixels are configured to reflect the illumination light beam into a complementary light beam; a lens, disposed on a path of the effective light beam, and configured to project the effective light beam to an area to be illuminated; an image sensing module, disposed on a path of the complementary light beam from the reflective light valve, and configured to sense the complementary light beam and convert an image formed by the sensed complementary light beam into a sensing signal; and a controller, electrically connected to the reflective light valve and the image sensing module, wherein the controller is configured to provide an image signal to the reflective light valve to control a distribution of the first state and the second state of the pixels, and the controller is configured to determine whether the reflective light valve is operating normally by comparing the sensing signal and the image signal. ### Claim 2 (depends on 1) The illumination module according to claim 1, wherein the controller is configured to compare each first pixel data of the sensing signal and each second pixel data of the image signal, in response to the first pixel data and the second pixel data located at a same pixel position showing complementary grayscales, the controller is configured to determine that the reflective light valve is operating normally, and in response to the first pixel data and the second pixel data located at a same pixel position not showing complementary grayscales, the controller is configured to determine that the reflective light valve is not operating normally. ### Claim 3 (depends on 1) The illumination module according to claim 1, wherein the reflective light valve is a digital micro-mirror device, the pixels are respectively a plurality of micro-mirrors, a pixel in the first state represents that the micro-mirror of the pixel rotates to a first angle to reflect the illumination light beam irradiated thereon to the lens, and another pixel in the second state represents that the micro-mirror of the another pixel rotates to a second angle to reflect the illumination light beam irradiated thereon to the image sensing module. ### Claim 4 (depends on 1) The illumination module according to claim 1, wherein the light source comprises at least one of a light-emitting diode, a laser diode, and a gas discharge lamp. ### Claim 5 (depends on 1) The illumination module according to claim 1, wherein the light source is a laser diode group, and the reflective light valve is a galvanometer adapted for swinging. ### Claim 6 (depends on 1) The illumination module according to claim 1, wherein the illumination module is an automotive headlight. ### Claim 7 (depends on 1) The illumination module according to claim 1, wherein the illumination module is a projector. ### Claim 8 (depends on 1) The illumination module according to claim 1, wherein in response to the controller determining that the sensing signal and the image signal are mismatched, the controller sends a warning signal that the illumination module is abnormal. ### Claim 9 (depends on 8) The illumination module according to claim 8, wherein the warning signal comprises at least one of a display signal, a sound signal, and a text message. ### Claim 10 (depends on 8) The illumination module according to claim 8, wherein the illumination module is an automotive headlight, and in response to the controller determining that the sensing signal and the image signal are mismatched, the controller turns off the illumination module or switches the illumination module to low beam mode. ### Claim 11 (depends on 1) The illumination module according to claim 1, wherein in response to the controller determining that an image carried by the effective light beam has an error bright spot pixel by comparing the sensing signal and the image signal, the controller changes at least a portion of the pixels around the error bright spot pixel in the image signal into dark spot pixels. ### Claim 12 (depends on 1) The illumination module according to claim 1, wherein in response to the controller determining that an image carried by the effective light beam has an error dark spot pixel by comparing the sensing signal and the image signal, the controller changes at least a portion of the pixels around the error dark spot pixel in the image signal into bright spot pixels. ### Claim 13 (depends on 1) The illumination module according to claim 1, wherein the controller compares the sensing signal and the image signal in real time to monitor in real time whether the illumination module is operating normally. ### Claim 14 (depends on 1) The illumination module according to claim 1, wherein the controller is configured to command the reflective light valve to provide the effective light beam with a test pattern when the illumination module is turned on, and compare the sensing signal and the image signal to self-determine whether the illumination module is normal. ### Claim 15 (depends on 1) The illumination module according to claim 1, wherein the image sensing module is an image sensor. ### Claim 16 (depends on 1) The illumination module according to claim 1, wherein the image sensing module comprises: a reflective surface, configured to receive the complementary light beam; and a camera, configured to shoot towards the reflective surface. ### Claim 17 (depends on 16) The illumination module according to claim 16, wherein the reflective surface is a diffuse reflective surface. ### Claim 18 (depends on 16) The illumination module according to claim 16, wherein the reflective surface is a specular reflective surface. ### Claim 19 (depends on 1) The illumination module according to claim 1, further comprising a lens group disposed between the reflective light valve and the image sensing module. ### Claim 20 (depends on 19) The illumination module according to claim 19, wherein the lens group comprises at least one of another lens, a beam splitter, and a light reducing mirror.