Rohm Co., Ltd.

Sony Semiconductor Solutions Corporation

Nobuo Kohmura

Go Asayama

Akihito Saito

Tatsuro Shimizu

Tatsuya Ninomiya

Takahiro Akahane

Yuki Urano

Kento Nishizawa

An image sensor includes a pixel array including multiple pixels. A lens is provided on an optical path of incident light to the image sensor. An actuator includes a coil, and supports positioning of the lens according to a driving signal applied to the coil. A position detection coil is arranged such that it magnetically couples with the coil of the actuator. An actuator driver supplies a pulse-shaped driving signal to the coil of the actuator driver. A position detection circuit generates a position detection signal that indicates the position of the lens based on an induced electromotive force that occurs in the position detection coil according to the driving signal, and feeds back the position detection signal to the actuator driver.

Actuator driver

Growing community of inventors

Kyoto, Japan

Nobuo Kohmura