Sharp Kabushiki Kaisha Corporation

Rohm Co., Ltd.

Yasuo Nakata

Tetsuo Ueyama

Hideaki Sato

Nobuo Ogata

Yoshihiro Sekimoto

Akihito Saito

Jun Maede

Kunio Kojima

Norimichi Shigemitsu

Tetsuya Fujimoto

Yukio Kurata

Shigeo Terashima

Tomoyuki Miyake

Kuniaki Okada

Hiroshi Nakanishi

Kazuya Kitamura

Toshiharu Inui

Hiromichi Tanimukai

Masahiro Nakamura

Toshiyuki Tanaka

Kazuya Fujita

Yoshihito Ishizue

Yukiko Nagasaka

Shigemi Maeda

Hiroshi Yokota

Hiroshi Fuji

Toshihisa Deguchi

Shinichi Abe

Isamu Nishimura

Masaru Nomura

Kiyoshi Kumata

Jun Akiyama

Mitsuo Ishii

Noboru Fujita

Atsushi Semi

Yoshinori Tanida

Yoshikazu Ohara

Kiyoharu Shimano

Yasuhiro Yamamoto

Shinji Kaioka

Tetsuya Yoshida

Kenji Sakai

Satsuki Tsukuda

Takuto Tsukamoto

Satoshi Yasukochi

Atsushi Shimatani

Hisateru Okai

A coil module includes a conductor layer, at least one element, and a sealing resin. The conductor layer is formed along a predetermined plane and includes a wiring portion and a helical-shaped coil portion. The at least one element is mounted on the wiring portion. The sealing resin covers the conductor layer and the at least one element. The sealing resin is integrally formed of a single type of resin material and has a predetermined thickness in a first direction perpendicular to the plane.

Coil module, actuator provided with coil module, and method for manufacturing coil module

A position detection unit generates a position detection value Pthat indicates the position of a control target. A temperature detection unit generates a temperature detection value that indicates the temperature. A correction unit corrects the position detection value P. A controller generates a control instruction value Ssuch that the position detection value Psubjected to the correction matches a position instruction value Pthat indicates the target position of the control target. A driver unit applies a driving signal that corresponds to the control instruction value Sto an actuator. The correction unit corrects the position detection value Psuch that the relation between the position detection value Pand the actual position exhibits linearity that is uniform independent of the temperature.

Actuator driver

An image stabilization actuator is used to displace a movable unit in a first direction, and a position in the first direction when an AF-axis position detection signal reaches a peak value is detected. Similarly, the image stabilization actuator is used to displace the movable unit in a second direction, and a position in the second direction when the AF-axis position detection signal reaches a peak value is detected. A reference position based on the position in the first direction and the position in the second direction thus obtained is stored. Correction information indicating a relationship between a displacement amount, from the reference position, of the movable unit displaced by the image stabilization actuator and a correction amount of the position detection signal is stored.

Crosstalk correction method and actuator driver

Disclosed is a camera module including an imaging lens supported in such a manner as to be displaceable in a first direction, an image sensor supported in such a manner as to be displaceable in a second direction different from the first direction, a first actuator that carries out positioning of the imaging lens in the first direction, and a second actuator that carries out positioning of the image sensor in the second direction. Autofocus operation is carried out by one of the first actuator, and the second actuator and optical image stabilization operation is carried out by the other of the first actuator and the second actuator.

Camera module that drives image sensor

The present invention reduces magnetic fog noise of an actuator. An actuator is used jointly with a position detection element to locate a lens in a direction of a first axis. A coil is formed in a manner of setting a second axis perpendicular to the first axis as a length direction, and has a first side and a second side parallel to the second axis, and a third side and a fourth side parallel to the first axis. A permanent magnet produces magnetic fields perpendicular to the first axis and the second axis and being in opposite directions with respect to the first side and the second side, respectively. During use, the position detection element is configured near the third side. The coil is split into multiple parts in a width direction on at least the third side.

Actuator and camera module

An imaging device includes an imaging lens, an imaging element that captures an image transmitted through the imaging lens, a blur detection part configured to detect a blur, an actuator configured to determine a position of the imaging lens, and an actuator driver configured to control the actuator in accordance with a blur detection signal from the blur detection part. The shift of the image occurring when forcibly changing the position of the imaging lens is corrected by shift of an effective pixel area of the imaging element according to the forcible change amount of the position of the imaging lens.

Actuator driver, imaging device using the same, and imaging method

An actuator positions a movable portion including a lens in a first direction (Z-axis direction). An acceleration sensor generates first acceleration information ACC that indicates the acceleration applied to the image capture apparatus in the first direction. An actuator driver IC superimposes a correction value that corresponds to the first acceleration information on a base instruction value that corresponds to the target position to be set for the lens in the first direction. The actuator driver IC controls the actuator according to a corrected instruction value thus obtained.

A calibration method for an imaging device including a camera module including an imaging element and a lens installed on a path of light incident on the imaging element; a blur detection element configured to detect an amount of blur acting on the imaging device; and a gravity detection element configured to determine a direction of gravity acting on the imaging device. The calibration method includes: detecting a first angle corresponding to a deviation of a direction of a coordinate axis of the blur detection element with respect to the direction of gravity; detecting a second angle corresponding to a deviation of a direction of the camera module with respect to the direction of gravity; and acquiring a parameter for correcting a detection signal of the blur detection element based on the first angle and the second angle.

Imaging device and calibration method thereof

An imaging device includes: an imaging element; a lens disposed on a path of incident light to the imaging element; an actuator configured to displace the lens in a plane perpendicular to an optical axis; a position detecting element configured to generate a position detection signal indicating a displacement of the lens; and an actuator driver configured to feedback-control the actuator based on the position detection signal and a target code indicating a target displacement of the lens. The actuator driver includes: a correction circuit that converts a first detection code corresponding to the position detection signal into a second detection code having a linear relationship with an actual displacement of the lens; and a control circuit that controls the actuator so that the second detection code approaches the target code.

Actuator driver, imaging device and calibration method

An imaging device includes: imaging lens displaceable in first and second directions in plane perpendicular to optical axis; actuator positioning the imaging lens in the first and second directions; position detector generating first and second position detection signals Hand H, Hincluding crosstalk component caused by displacing the imaging lens in the second direction, and Hincluding crosstalk component caused by displacing the imaging lens in the first direction; crosstalk compensator correcting Hand Hto reduce crosstalk components included in Hand H; and driver controlling the actuator based on corrected first and second position detection signals H' and H&#x2032;, wherein when ratio of Hto Hwhile driving the imaging lens in the first direction is &#x3b1; and ratio of Hto Hwhile driving the imaging lens in the second direction is &#x3b2;, the crosstalk compensator reduces crosstalk components included in Hand H.

Imaging device that adjusts lens positioning based on a ratio in order to address crosstalk

A camera window holding mechanism () for holding a terminal camera window () is provided in a shoulder portion of a camera module (), an opening (H) is formed in a center portion of the camera window holding mechanism (), and some of lenses on an object side of a lens unit () are accommodated in the opening (H).

Camera module including image sensor and camera window holding mechanism

An optical section () and a lens holder () are fixed to each other in a state where the lens holder () is at an intermediate position within a movable range so that the optical section () does not come into contact with an image pickup section () in a case where the lens holder () is driven within the movable range. This makes it possible to provide (i) a camera module in which it is possible to reduce the influence of a tilt that occurs in the vicinity of an infinite-distance side mechanical end and also reduce the influence of a tilt that occurs at an intermediate position away from the infinite-distance side mechanical end and a macro side and in which image pickup lenses are attachable with high positional accuracy and (ii) a method for producing a camera module.

Method for producing camera module

A method of manufacturing a camera module that is low profile and that can achieve superior resolving power, a camera module, and an imaging device are provided. A positioning step of positioning an object-side group optical unit () along an optical axis direction with the use of a jig () such that the object-side group optical unit () is located so as not to be in contact with an image-plane-side group lens () and a fixing step of fixing the object-side group optical unit () to a lens holder () are included.

Method of manufacturing camera module and camera module

Growing community of inventors

Kyoto, Japan

Yoshihiro Sekimoto