# US 11,029,579 B2 · Imaging apparatus and electronic apparatus for controlling a position of a lens > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,029,579 B2 - Document ID: US11029579B2 - Status: Granted - Kind: B2 - Application number: 16/607,034 - Filed: 2018-04-13 - Published: 2020-12-10 - Granted: 2021-06-08 - Earliest claimed: 2017-04-28 - Assignees: Sony Semiconductor Solutions Corporation - Applicants: Sony Semiconductor Solutions Corporation - Inventors: Katsuji Kimura - Web page: https://patentgrep.com/patent/US11029579B2 ## CPC - G03B 3/10: Power-operated focusing - G03B 13/36: Autofocus systems - G02B 5/208: {for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation} - G02B 7/08: adapted to co-operate with a remote control mechanism - G02B 7/09: adapted for automatic focusing or varying magnification - G03B 11/00: Filters or other obturators specially adapted for photographic purposes - G03B 17/02: Bodies - H02K 11/225: Detecting coils - H02K 41/0356: {moving along a straight path} - H04N 23/51: Housings - H04N 23/54: Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils - H04N 23/60: Control of cameras or camera modules - G03B 2205/0053: Driving means for the movement of one or more optical element - G03B 2205/0069: using electromagnetic actuators, e.g. voice coils - 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) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract The present technology relates to an imaging apparatus and an electronic apparatus that are capable of adjusting a focal position with high accuracy. There are provided a lens that collects subject light, an image sensor that photoelectrically converts the subject light from the lens, a circuit substrate including a circuit that outputs a signal from the image sensor to the outside, an actuator that drives the lens with a pulse width modulation (PWM) waveform, and a detection unit that detects a magnetic field generated by a coil included in the actuator. The detection unit detects an induced electromotive force generated by the magnetic field. In addition, the detection unit detects a position of the lens from the induced electromotive force. The present technology can be applied to an imaging apparatus. ## Claims ### Claim 1 An imaging apparatus comprising: a first lens that collects subject light; an image sensor that photoelectrically converts the subject light from the first lens; a circuit substrate including a circuit that outputs a signal from the image sensor to an outside, wherein the circuit substrate includes a plurality of layers; an actuator that drives the first lens with a pulse width modulation (PWM) waveform; and a detection unit that detects a magnetic field generated by a first coil included in the actuator, wherein the detection unit is formed on the circuit substrate, wherein the detection unit includes a second coil, and wherein the second coil is formed across the plurality of layers of the circuit substrate such that a start point of the second coil is on one layer of the plurality of layers and an end point of the second coil is on a different layer of the plurality of layers. ### Claim 2 (depends on 1) The imaging apparatus according to claim 1, wherein the detection unit detects an induced electromotive force generated by the magnetic field. ### Claim 3 (depends on 2) The imaging apparatus according to claim 2, wherein the detection unit detects a position of the first lens based on a magnitude of the induced electromotive force. ### Claim 4 (depends on 1) The imaging apparatus according to claim 1, wherein the image sensor has a chip size package (CSP) shape. ### Claim 5 (depends on 1) The imaging apparatus according to claim 1, wherein the image sensor has a chip size package (CSP) shape, and an infrared cut filter and a second lens are provided on a glass substrate of the image sensor in the CSP shape, wherein the second lens is below the first lens. ### Claim 6 (depends on 1) The imaging apparatus according to claim 1, wherein the image sensor has a flip-chip structure. ### Claim 7 (depends on 1) The imaging apparatus according to claim 1, wherein the image sensor has a flip-chip structure and is mounted on the circuit substrate, and an infrared cut filter serving as a base material is adhered to the circuit substrate. ### Claim 8 (depends on 1) The imaging apparatus according to claim 1, further comprising: a storage unit that stores a correction value for correcting variation between imaging apparatuses. ### Claim 9 An electronic apparatus comprising imaging apparatus including: a first lens that collects subject light; an image sensor that photoelectrically converts the subject light from the first lens; a circuit substrate including a circuit that outputs a signal from the image sensor to an outside, wherein the circuit substrate includes a plurality of layers; an actuator that drives the first lens with a pulse width modulation (PWM) waveform; and a detection unit that detects a magnetic field generated by a first coil included in the actuator, wherein the detection unit includes a second coil, and wherein the second coil is formed across the plurality of layers of the circuit substrate such that a start point of the second coil is on one layer of the plurality of layers and an endpoint of the second coil is on a different layer of the plurality of layers. ### Claim 10 (depends on 9) The electronic apparatus according to claim 9, wherein the detection unit detects an induced electromotive force generated by the magnetic field. ### Claim 11 (depends on 10) The electronic apparatus according to claim 10, wherein the detection unit detects a position of the first lens based on a magnitude of the induced electromotive force. ### Claim 12 (depends on 9) The electronic apparatus according to claim 9, wherein the image sensor has a chip size package (CSP) shape. ### Claim 13 (depends on 12) The electronic apparatus according to claim 12, further comprising: an infrared cut filter and a second lens are provided on a glass substrate of the image sensor in the CSP shape, wherein the second lens is below the first lens. ### Claim 14 (depends on 9) The electronic apparatus according to claim 9, wherein the image sensor has a flip-chip structure. ### Claim 15 (depends on 14) The electronic apparatus according to claim 14, further comprising: an infrared cut filter serving as a base material is adhered to the circuit substrate. ### Claim 16 (depends on 9) The electronic apparatus according to claim 9, further comprising: a storage unit that stores a correction value for correcting variation between imaging apparatuses. ### Claim 17 (depends on 1) The imaging apparatus according to claim 1, wherein the second coil is perpendicular to the magnetic field generated by the first coil. ### Claim 18 (depends on 9) The electronic apparatus according to claim 9, wherein the second coil is perpendicular to the magnetic field generated by the first coil.