Abstract: An optical device with an imaging device for forming an image of a subject with a lens device includes a lens unit, a movable member making the lens unit movable within a plane orthogonal to the optical axis of the lens unit, an image pickup device imaging the subject image formed by the lens device, a fixed member limiting the movement of the movable member in the optical axis direction, at least three balls rolling between the movable and fixed member, a vibration detecting unit, and a pitch direction drive unit for driving the movable member in the pitch direction within the optical axis orthogonal plane and a yaw direction drive unit for driving the movable member in the yaw direction within the optical axis orthogonal plane. The pitch and yaw direction drive units press the movable member toward the fixed member side by means of magnetic pressing forces caused by magnetic attractive action between drive magnets and yokes.

Abstract: A lightweight bumper structure is achieved without a reduction in the amount of absorption of collision energy. A bumper structure (B1) is provided with a left and right pair of bumper stays (1, 1) fixed to side members (S), and also with a bumper reinforcing member (2) supported by both the bumper stays (1, 1). Each bumper stay (1) is formed in a shape the width of which gradually increases from the side member (S) toward the bumper reinforcing member (2). The bumper reinforcing member (2) is curved between both the bumper stays (1, 1). The rigidity of the bumper stays (1) and the bumper reinforcing member (2) is set so that the bumper stays (1) are crushed in the front-rear direction after the curved portion of the bumper reinforcing member (2) is rectilinearly extended.

Abstract: Between an air source and a first pressure chamber of a double-acting main cylinder having a length measurement sensor for measuring an acting position of a piston, a supply solenoid valve is connected; between the first pressure chamber and the atmosphere, an exhaust solenoid valve is connected; and between a second pressure chamber and the air source, a stop solenoid valve is connected. When a target acting position of the piston is inputted into a controller, the controller moves the piston to the target acting position so that a position measured by the length measurement sensor agrees with the target position by on-off controlling the solenoid valves. Upon reaching the target position, the piston is stopped and held in the stopped state by confining air within the pressure chambers.

Abstract: A tapered face whose hole diameter is gradually reduced toward a riding-on direction is formed at a valve-seat end of a supply valve seat or an discharge valve seat where a seal member of a spool slides and rides onto from a side with a low fluid pressure to a side with a high fluid pressure, while the other valve-seat end is kept as a cylindrical surface with a constant hole diameter, by which two tapered faces are formed in a valve hole, and an inner diameter of a portion located between the two tapered faces of the valve hole is formed equal to an inner diameter of a small diameter end of the tapered face, while an inner diameter of a portion located on a hole end side rather than the two tapered faces of the valve hole is formed equal to or larger than the inner diameter of a large diameter end of the tapered face.

Abstract: The elastic wave measurement apparatus, when a high-frequency burst signal is input to the first ball SAW device, an input destination of the high-frequency burst signal is switched in sequence to another one of the ball SAW devices before a detection time at which an output signal from the first ball SAW device is detected, and at and after the detection time, output signals of the response characteristics of those ball SAW devices from the first ball SAW device to the last ball SAW device are detected in sequence.

Abstract: An optical image stabilizer includes a lens-holding member, first and second actuators driving the lens-holding member in first and second directions, a first guide member fixed to a base member, a second guide member placed between the first guide member and the lens-holding member, and a first ball placed between the base member and the lens-holding member and rolling in association with movement of the lens-holding member. Relative movement of the first and second guide members in a third direction accompanied by rolling of a second ball is allowed and relative movement thereof in a direction different from the third direction is limited by the second ball. Relative movement of the second guide member and the lens-holding member in a fourth direction accompanied by rolling of the third ball is allowed and relative movement thereof in a direction different from the fourth direction is limited by the third ball.

Abstract: An observation apparatus includes a first member 9 supporting first optical elements L1L and L1R, a second member 7 supporting second optical elements L4L and L4R and the first member via balls so as to be movable in an optical axis direction, and a biasing device 11 generating a biasing force for clamping the balls. The first and second members include guide portions 7a, 7b, 9a, and 9b engaging with first balls so as to permit a rolling motion of the two first balls 10a and 10b in the optical axis direction and prevent the first member from displacing with respect to the second member in a direction orthogonal to the optical axis direction, and ball holding portions 7c, 7d, 9c, and 9d holding second balls 10c and 10d so as to permit a rolling motion of the second balls in the optical axis direction.

Abstract: An optical device with an imaging device for forming an image of a subject with a lens device includes a lens unit, a movable member making the lens unit movable within a plane orthogonal to the optical axis of the lens unit, an image pickup device imaging the subject image formed by the lens device, a fixed member limiting the movement of the movable member in the optical axis direction, at least three balls rolling between the movable and fixed member, a vibration detecting unit, and a pitch direction drive unit for driving the movable member in the pitch direction within the optical axis orthogonal plane and a yaw direction drive unit for driving the movable member in the yaw direction within the optical axis orthogonal plane. The pitch and yaw direction drive units press the movable member toward the fixed member side by means of magnetic pressing forces caused by magnetic attractive action between drive magnets and yokes.

Abstract: An optical apparatus is disclosed which has a minimized protruding portion at a portion where a plurality of barrel-constituting members are connected and which allows easy assembly and disassembly. The optical apparatus includes a first member and a second member which constitute a lens barrel for accommodating lenses and a connecting member which connects the first and second members together. The connecting member is formed of a plate-like member placed along the outer surfaces of the first and second members, is elastically deformed when the connecting member is attached to the first and second members, and pulls the first and second members in and connects them with elastic force caused by the elastic deformation.

Abstract: An optical device with an imaging device for forming an image of a subject with a lens device includes a lens unit, a movable member making the lens unit movable within a plane orthogonal to the optical axis of the lens unit, an image pickup device imaging the subject image formed by the lens device, a fixed member limiting the movement of the movable member in the optical axis direction, at least three balls rolling between the movable and fixed member, a vibration detecting unit, and pitch and yaw direction drive units for driving the movable member in the pitch and yaw directions within the optical axis orthogonal plane, respectively. The pitch and yaw direction drive units press the movable member toward the fixed member side by means of magnetic pressing forces caused by magnetic attractive action between drive magnets and yokes.

Abstract: An image stabilizer for stabilizing an image against unexpected vibrations or shaking of a zoom lens includes a diaphragm arranged to vary its full-open-aperture diameter according to a magnification varying (zooming) action from a wide-angle end position to a telephoto end position of the zoom lens for the purpose of preventing variations in light quantity which more conspicuously take place in the peripheral part than in the central part of an image plane when an image stabilizing action is performed.

Abstract: Between an air source and a first pressure chamber of a double-acting main cylinder having a length measurement sensor for measuring an acting position of a piston, a supply solenoid valve is connected; between the first pressure chamber and the atmosphere, an exhaust solenoid valve is connected; and between a second pressure chamber and the air source, a stop solenoid valve is connected. When a target acting position of the piston is inputted into a controller, the controller moves the piston to the target acting position so that a position measured by the length measurement sensor agrees with the target position by on-off controlling the solenoid valves. Upon reaching the target position, the piston is stopped and held in the stopped state by confining air within the pressure chambers.

Abstract: Between an air source and first and second pressure chambers of a double-acting main cylinder having a length measurement sensor for measuring an acting position of a piston, a first supply solenoid valve and a second supply solenoid valve are connected, respectively, while between the first and second pressure chambers and the atmosphere, a first exhaust solenoid valve and a second exhaust solenoid valve are connected, respectively. When a target acting position of the piston is inputted into a controller, the controller moves the piston to the target acting position so that a position measured by the length measurement sensor agrees with the target position by on-off controlling the solenoid valves. Upon reaching the target position, the piston is stopped and held in the stopped state by confining air within the pressure chambers.

Abstract: An electromagnetic operation-type automatic pressure-adjusting valve outputting an air pressure corresponding to an amount of electric power is connected in an air flow path connecting a pressure chamber of a single-acting main cylinder and an air source. A controller is configured to obtain a relationship between a position of a piston and an air pressure from a relationship between the position of the piston of the main cylinder and a spring force of a return spring, and a relationship between the air pressure supplied to the pressure chamber and an acting force applied to the piston by the air pressure. When a target position of a movement of the piston is inputted to the controller, the controller is operated to move the piston toward the target position and to stop the piston at the position by means of controlling the amount of electric power for the automatic pressure-adjusting valve so that an air pressure corresponding to the target position is outputted.

Abstract: A lens apparatus capable of realizing better optical performance by suppressing an inclination of each lens unit more reliably while shortening the overall length in a collapsed position to the smallest possible level is disclosed. The lens apparatus comprises a fixed member which makes up the body of the apparatus, first and second lens holding members which hold their respective lens units and are movable in the direction of the optical axis with respect to the fixed member and a driving member which engages the first and second lens holding members and drives these first and second lens holding members in the direction of the optical axis.

Abstract: An optical image stabilizer includes a lens-holding member, first and second actuators driving the lens-holding member in first and second directions, a first guide member fixed to a base member, a second guide member placed between the first guide member and the lens-holding member, and a first ball placed between the base member and the lens-holding member and rolling in association with movement of the lens-holding member. Relative movement of the first and second guide members in a third direction accompanied by rolling of a second ball is allowed and relative movement thereof in a direction different from the third direction is limited by the second ball. Relative movement of the second guide member and the lens-holding member in a fourth direction accompanied by rolling of the third ball is allowed and relative movement thereof in a direction different from the fourth direction is limited by the third ball.