# US 11,307,034 B2 · Gyroscope, electronic device and method of detecting angular velocity > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,307,034 B2 - Document ID: US11307034B2 - Status: Granted - Kind: B2 - Application number: 16/337,581 - Filed: 2018-09-04 - Published: 2021-10-28 - Granted: 2022-04-19 - Earliest claimed: 2017-12-13 - Assignees: Beijing Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Applicants: Beijing Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Inventors: Ying Wang; Tien Lun Ting; Xue Cao; Peizhi Cai; Hao Liu; Chuncheng Che; Hailin Xue; Xibin Shao; Jie Wu - Web page: https://patentgrep.com/patent/US11307034B2 ## CPC - G01C 19/661: {details} - H04M 1/026: {Details of the structure or mounting of specific components} - G01C 19/00: Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects - G01C 19/34: for indicating a direction in the horizontal plane, e.g. directional gyroscopes - G01C 19/56: Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces - G01C 19/64: Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams - G01C 19/66: Ring laser gyrometers - G01C 19/72: with counter-rotating light beams in a passive ring, e.g. fibre laser gyrometers - H04M 1/21: Combinations with auxiliary equipment, e.g. with clocks or memoranda pads - H04M 1/72454: according to context-related or environment-related conditions - H04M 2250/12: including a sensor for measuring a physical value, e.g. temperature or motion - G01C: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effects, propagation time, of radio waves, analogous arrangements using other waves G01S) - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) ## Abstract A gyroscope, an electronic device and a method of detecting an angular velocity. The gyroscope includes: a photoelectric detector and a light source, wherein the light source is movable relative to the photoelectric detector, and light emitted by the light source is able to be irradiated onto the photoelectric detector. ## Claims ### Claim 1 A gyroscope, comprising: a photoelectric detector and a light source, wherein the light source is movable relative to the photoelectric detector, and light emitted by the light source is able to be irradiated onto the photoelectric detector, wherein the light source is a polarization light source; the gyroscope further comprises a polarization analyzer for polarization light; wherein the polarization light source is movable relative to the polarization analyzer for polarization light, and polarization light emitted by the polarization light source is able to be irradiated onto the photoelectric detector through the polarization analyzer for polarization light. ### Claim 2 (depends on 1) The gyroscope according to claim 1, wherein the polarization analyzer for polarization light comprises: a first substrate and a second substrate opposite to each other; and a liquid crystal layer between the first substrate and the second substrate, wherein the liquid crystal layer comprises a dichroic dye among liquid crystal molecules. ### Claim 3 (depends on 1) The gyroscope according to claim 1, wherein the polarization analyzer for polarization light comprises: a first substrate, and a first polarizer on the first substrate. ### Claim 4 (depends on 3) The gyroscope according to claim 3, wherein the polarization analyzer for polarization light further comprises: a second substrate, a second polarizer on the second substrate, and a liquid crystal layer between the first substrate and the second substrate. ### Claim 5 (depends on 2) The gyroscope according to claim 2, further comprising driving electrodes, wherein the driving electrodes are on the first substrate and/or on the second substrate to drive deflection of liquid crystal molecules in the liquid crystal layer. ### Claim 6 (depends on 5) The gyroscope according to claim 5, further comprising a controller, wherein the controller is configured to be in signal connection to the photoelectric detector to receive a detecting signal of the photoelectric detector, and is configured to control driving voltages applied to the driving electrodes. ### Claim 7 (depends on 1) The gyroscope according to claim 1, further comprising an elastomer, wherein the elastomer allows the light source and the photoelectric detector to be directly or indirectly connected, and an end, which is far away from the light source, of the elastomer is further connected to a power supply to supply power to the light source. ### Claim 8 (depends on 2) The gyroscope according to claim 2, wherein the photoelectric detector is on a light emitting side of the second substrate. ### Claim 9 An electronic device, comprising a gyroscope, wherein the gyroscope comprises: a photoelectric detector and a light source, the light source is movable relative to the photoelectric detector, and light emitted by the light source is able to be irradiated onto the photoelectric detector, wherein the light source is a polarization light source; the gyroscope further comprises a polarization analyzer for polarization light; wherein the polarization light source is movable relative to the polarization analyzer for polarization light, and polarization light emitted by the polarization light source is able to be irradiated onto the photoelectric detector through the polarization analyzer for polarization light. ### Claim 10 A method of detecting an angular velocity, comprising: allowing a light source that is movable to perform an angular movement with a motion state of a detected object; allowing light emitted by the light source to be irradiated onto a photoelectric detector, and allowing illumination areas irradiated onto the photoelectric detector in different motion states to be different; obtaining a detecting result provided by the photoelectric detector; and obtaining a change in intensity of the light irradiated onto the photoelectric detector from the detecting result to obtain the angular movement of the light source, wherein the light source is a polarization light source, and allowing the light emitted by the light source to be irradiated onto the photoelectric detector, and allowing illumination areas irradiated onto the photoelectric detector in different motion states to be different, comprises: allowing polarization light emitted by the polarization light source to be irradiated onto the photoelectric detector through the polarization analyzer for polarization light, and allowing intensity of the polarization light irradiated onto the photoelectric detector in different motion states to be different. ### Claim 11 (depends on 10) The method of detecting the angular velocity according to claim 10, wherein the polarization analyzer for polarization light comprises a liquid crystal cell, and the liquid crystal cell comprises a liquid crystal layer; the liquid crystal layer in the liquid crystal cell comprises liquid crystal into which a dichroic dye is added; a deflection angle of liquid crystal molecules in the liquid crystal layer is controlled by driving voltages of the liquid crystal cell, and the method further comprises: subsequent to obtaining the detecting result provided by the photoelectric detector, adjusting the driving voltages of the liquid crystal cell to control deflection of liquid crystal molecules, allowing the detecting result provided by the photoelectric detector to reach an initial value, and recording corresponding values of the driving voltages; and obtaining an angular movement of the polarization light source from the change in intensity of the light and the corresponding values of the driving voltages. ### Claim 12 (depends on 4) The gyroscope according to claim 4, further comprising driving electrodes, wherein the driving electrodes are on the first substrate and/or on the second substrate to drive deflection of liquid crystal molecules in the liquid crystal layer. ### Claim 13 (depends on 12) The gyroscope according to claim 12, further comprising a controller, wherein the controller is configured to be in signal connection to the photoelectric detector to receive a detecting signal of the photoelectric detector, and is configured to control driving voltages applied to the driving electrodes. ### Claim 14 (depends on 4) The gyroscope according to claim 4, wherein the photoelectric detector is on a light emitting side of the second substrate. ### Claim 15 (depends on 2) The gyroscope according to claim 2, further comprising an elastomer, wherein the elastomer allows the light source and the photoelectric detector to be directly or indirectly connected, and an end, which is far away from the light source, of the elastomer is further connected to a power supply to supply power to the light source. ### Claim 16 (depends on 3) The gyroscope according to claim 3, further comprising an elastomer, wherein the elastomer allows the light source and the photoelectric detector to be directly or indirectly connected, and an end, which is far away from the light source, of the elastomer is further connected to a power supply to supply power to the light source.