Abstract: Provided is an image pickup lens that forms an image on an image pickup element with light from a subject. In the image pickup lens, a lens that is disposed on an image pickup element side is fixed in position, and a focusing lens group having a plurality of lenses including a lens closest to the subject is moved in an optical axis direction, thereby performing focusing.

Abstract: A drive mechanism and a drive device which have an SMA actuator applied thereto, wherein the drive mechanism is configured in such a manner that the size of a constituent component contained within a driven part can be increased to enable the driven part to be moved stably and wherein the drive device is configured in such a manner that the diameter of a lens mounted to a lens unit can be increased to enable the lens unit to be smoothly displaced in the optical axis direction. The drive mechanism and the drive device are configured in such a manner that a drive support point for a lever member is provided at a corner of an affixed section, a guide body is provided to a second corner, which faces said corner, so as to protrude from the body section of the driven part, the guide body is supported slidably, and the drive mechanism and the drive device are provided with a drive guide section provided with a pressing spring for pressing the guide body.

Abstract: A drive mechanism and an imaging device according to the present invention each include: an ultrasonic linear actuator 4 provided with a rod 42 that moves reciprocally in response to expansion/contraction of a piezoelectric element 41 and a first group unit 2 serving as an example of a moving body that engages with the rod 42 with a prescribed frictional force. The moving body (first group unit 2) is provided with a holding member 24, a pressing member 30 or other member that engages with the rod 42 in such a way that fluctuation in the frictional force is suppressed, and drive performance is stabilized. As a consequence, the drive mechanism and the imaging device according to the present invention can suppress fluctuation in the frictional force (gripping force) of the moving body in the ultrasonic linear actuator 4, making it possible to stabilize drive performance.

Abstract: In an image pickup device 1 and a method for manufacturing same according to the present invention, one end of a rod 42 in an ultrasonic linear actuator 4 is supported tiltably by a first supporting section (for example, a front frame 52), and after the position of the ultrasonic linear actuator 4 is adjusted in such a manner that an optical axis of a moving lens group (for example, a first unit 2) which engages with the rod 42 is perpendicular to an element surface of an image pickup element 7, a piezoelectric element 41 which is connected to another end of the rod 42 is fixed by adhesive to a second supporting section (for example, a rear frame 51) which is disposed in the vicinity of the piezoelectric element 41.

Abstract: Provided is an image pickup lens that forms an image on an image pickup element with light from a subject. In the image pickup lens, a lens that is disposed on an image pickup element side is fixed in position, and a focusing lens group having a plurality of lenses including a lens closest to the subject is moved in an optical axis direction, thereby performing focusing.

Abstract: A driving device includes an electromechanical transducer that is extended and contracted by application of voltage, and a support member that slidably supports a movable body and that is displaced together with the electromechanical transducer to which the support member is connected, the movable body being driven along the support member with the extension and contraction of the electromechanical transducer. The movable body has a main element, a pinch member that is assembled on the main element so as to pinch and hold the support member, and a biasing member that biases the pinch member toward the support member. A part of the pinch member abuts on the support member and other part thereof is held on the main element in a cross section perpendicular to a movement direction of the movable body when the pinch member is biased by the biasing member.

Abstract: Provided is a compact thin type optical unit provided also with a housing 2 having an mounting surface 31 for mounting an imaging device 18 on, an optical system driving device 5 for driving the optical system 3, a light quantity control member 16 for controlling a light quantity projecting on the imaging device 18 and a light quantity control driving device 6 for driving the light quantity control member 16, and the optical system driving device 5, wherein the light quantity control driving device 6 are arranged outside a same side of the mounting surface 31 so as to overlap each other in a direction perpendicular to an optical axis X of the optical system 3.

Abstract: A dimension between ends of a magnet is set to be larger than a moving distance of a lens of a photographing optical system. The magnet is arranged such that a direction of connecting magnetic poles (S-pole and N-pole) is substantially parallel to an optical axis direction of the lens. A Hall sensor is disposed in the center of a movable range of the lens along the optical axis direction. The magnet is mounted in a lens frame such that the center of the magnet faces the Hall sensor. Lens positions and outputs of the Hall sensor can be in one-to-one correspondence with each other within the movable range of the lens. The position detecting device and the electronic apparatus are miniaturized and produced at reduced costs.

Abstract: A driving device includes an electromechanical transducer that is extended and contracted by application of voltage, and a support member that slidably supports a movable body and that is displaced together with the electromechanical transducer to which the support member is connected, the movable body being driven along the support member with the extension and contraction of the electromechanical transducer. The movable body has a main element, a pinch member that is assembled on the main element so as to pinch and hold the support member, and a biasing member that biases the pinch member toward the support member. A part of the pinch member abuts on the support member and other part thereof is held on the main element in a cross section perpendicular to a movement direction of the movable body when the pinch member is biased by the biasing member.

Abstract: Provided is a compact thin type optical unit provided also with a housing 2 having an mounting surface 31 for mounting an imaging device 18 on, an optical system driving device 5 for driving the optical system 3, a light quantity control member 16 for controlling a light quantity projecting on the imaging device 18 and a light quantity control driving device 6 for driving the light quantity control member 16, and the optical system driving device 5, wherein the light quantity control driving device 6 are arranged outside a same side of the mounting surface 31 so as to overlap each other in a direction perpendicular to an optical axis X of the optical system 3.