Title:
ACTUATOR DRIVER, IMAGE SENSOR, CAMERA MODULE, ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/155862
Kind Code:
A1
Abstract:
The image sensor 200 has a pixel array 202 including multiple pixels 201. A lens 102 is disposed on a light path of incident light on the image sensor 200. An actuator 104 has a coil 106 and performs positioning of the lens 102 in response to a drive signal S2 applied to the coil 106. A position detection coil 204 is arranged so as to be magnetically coupled with the coil 106 of the actuator 104. The actuator driver 300 supplies a pulsed drive signal S2 to the coil 106. A position detection circuit 208 generates a position detection signal PFB indicating the position of the lens 102 on the basis of an induced electromotive force S3 generated in the position detection coil 204 in accordance with the drive signal S2, and feeds back the position detection signal to the actuator driver 300.
Inventors:
SAITO AKIHITO (JP)
NINOMIYA TATSUYA (JP)
KOHMURA NOBUO (JP)
NISHIZAWA KENTO (JP)
SHIMIZU TATSURO (JP)
AKAHANE TAKAHIRO (JP)
ASAYAMA GO (JP)
URANO YUKI (JP)
NINOMIYA TATSUYA (JP)
KOHMURA NOBUO (JP)
NISHIZAWA KENTO (JP)
SHIMIZU TATSURO (JP)
AKAHANE TAKAHIRO (JP)
ASAYAMA GO (JP)
URANO YUKI (JP)
Application Number:
PCT/JP2019/001774
Publication Date:
August 15, 2019
Filing Date:
January 22, 2019
Export Citation:
Assignee:
ROHM CO LTD (JP)
SONY SEMICONDUCTOR SOLUTIONS CORP (JP)
SONY SEMICONDUCTOR SOLUTIONS CORP (JP)
International Classes:
H04N5/369; G02B7/04; G02B7/08; G02B7/28; G03B13/36; H04N5/225
Domestic Patent References:
| WO2016158161A1 | 2016-10-06 |
Foreign References:
| JP2016537665A | 2016-12-01 | |||
| US20150130990A1 | 2015-05-14 | |||
| JP2018189703A | 2018-11-29 |
Attorney, Agent or Firm:
MORISHITA Sakaki (JP)
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