Olympus Corporation

Kaoru Matsuki

Sumio Kawai

Shinji Kaneko

Tsuyoshi Togawa

Akira Matsui

Takeshi Suga

You Kondoh

A medical power supply system includes: a medical device including an elongated insertion section, a power receiving unit including a power receiving member and movable relative to the insertion section in a longitudinal direction of the insertion section, and a biasing unit biasing the power receiving unit toward a distal end side of the insertion section; and a guide unit including a power transmitting unit including a power transmitting member, the insertion section being inserted into the guide unit. When the insertion section is inserted into the guide unit to a predetermined amount, the power receiving unit comes in contact with the power transmitting unit with being biased by the biasing unit, and the power transmitting member and the power receiving member face each other in an axial direction of the insertion section and have a positional relation in which wireless power transmission is possible.

Medical power supply system

A light adjusting apparatus includes substrates arranged in parallel, each including an opening to pass light, a rotary shaft member which is rotatable around an axis perpendicular to the substrates and movable in an axial direction, a light adjusting section fixed integrally to the rotary shaft member in a space between the substrates and configured to move to an insertion position or a retracted position along with the rotation of the rotary shaft member and adjust light that passes through the opening, and a holding member configured to restrict the rotation of the light adjusting section that moves to one substrate side in the space from the insertion/retracted position and allow the rotation of the light adjusting section that moves to the other substrate side in the space.

Light adjusting apparatus

A light adjusting apparatus including a drive section provided with an axial magnet, a coil core member and a coil, a first substrate provided an opening and a first cut-out portion, a second substrate provided with an opening and a second cut-out portion, located at a predetermined distance from the first substrate, an incident light adjusting section to which the axial magnet is joined, and an axial magnet support member provided with a distance keeping portion that keeps a distance between the coil core member and the axial magnet to within a certain range and a dropout prevention portion that prevents dropout of the axial magnet from the first cut-out portion, the axial magnet support member being fixed to the coil core member, in which the incident light adjusting section is rotated by the drive section for adjusting the incident light.

The light control system includes command means () for outputting a command signal indicating a direction of rotation of the light control means (), detection means () for detecting electromotive force generated in a coil (), switch means () for connecting the coil to drive means () in a driving state in which current is supplied to the coil and connecting the coil to the detection means in a non-driving state in which electromotive force generated in the coil is detected, determination means () for determining a rotational state of a rotary shaft member (), based on an output signal output from the detection means, and control means () for outputting a command for causing the drive means to output a drive signal, based on an output signal output from the determination means.

Light control system

The apparatus includes an upper substrate and a lower substrate, each of which has an optical aperture, at least one light control unit, a spacer arranged between the upper substrate and the lower substrate to provide a space in which the light control unit can move, and a drive unit arranged on the upper substrate to drive the light control unit. The drive unit includes a magnet arranged at a center of rotation of the light control unit and an electromagnetic drive source including a coil core and a winding coil, the coil core being arranged in such a way as to be opposed to the magnet. A positioning member is provided on the upper substrate. The distance between the coil core and the magnet is kept constant by the positioning member.

Light control apparatus

A shape memory alloy actuator system includes a shape memory alloy actuator, a mobile object, an elastic member, a first regulating member, and a second regulating member, a detecting section which detects a resistance value of the shape memory alloy wire, a calculating section which calculates an electric current applied, an output section, a control section which controls the detecting section, the calculating section, the output section. The calculating section calculates a first resistance value at which, a proportion of a resistance change with respect to a change in a unit temperature changes from a first proportion to a second proportion which differs from the first proportion, and the control section carries out a position control of the shape memory alloy actuator by the first resistance value, when the shape memory alloy wire is to be elongated.

Shape memory alloy actuator system

A shape memory alloy actuator includes a shape memory alloy wire portion, a non-deformable portion, a wire portion which is formed by the shape memory alloy wire portion and the non-deformable portion, and which is inserted into a tube member, a movable body which is movable in a direction in which the length of the shape memory alloy wire portion changes, an elastic member which exerts an external force in a direction in which, the shape memory alloy wire portion elongates, and a fixed member to which, one end of the tube member and one end of the shape memory alloy wire portion are fixed. One end of the non-deformable portion which forms the wire portion is connected to the movable body, and the tube member includes therein the shape memory alloy wire portion, and includes therein at least a part of the non-deformable portion.

Shape memory alloy actuator

An inertial driving actuator includes a fixing member, a moving element that is fixed to the fixing member and generates a small displacement by extension and contraction, an oscillation substrate that is fixed to the moving element and is moved linearly reciprocally by the small displacement, and a moving body that is moved by reciprocal movement of the oscillation substrate. The moving body has a first electrode. The oscillation substrate has a second electrode, the area of the facing portion of the second electrode and the first electrode changing continuously as the moving body moves. The actuator further includes a frictional force controller that controls a frictional force generated between the oscillation substrate and moving body, and a position detector that detects the position of the moving body on the basis of the electrostatic capacitance of the facing portion of the first electrode and the second electrode.

Inertial driving actuator

An inertial drive actuator includes a fixed member, a displacement generating mechanism which is connected to the fixed member, and which generates a minute displacement in a first direction and a second direction, a vibration substrate which reciprocates by the minute displacement generated by the displacement generating mechanism, a mobile object which is disposed on the vibration substrate, and which is movable by inertia, a driving mechanism which is connected to the mobile object, and which controls a frictional force between the mobile object and the vibration substrate by making an electromagnetic force to act in the mobile object by applying a current, a detecting electrode having a position detection function, which is disposed on a flat surface of the vibration substrate, to be facing the mobile object via an insulating body layer, and which is formed such that, an area face-to-face thereof with the mobile object either increases continuously or decreases continuously with the movement of the mobile object, and a position detecting mechanism which detects a position of the mobile object by detecting an electrostatic capacitance generated between the mobile object and the detecting electrode.

Inertial drive actuator

A magnetic coupling lens driving actuator includes an imaging element; a movable lens that is movable in a direction of an optic axis; a magnetic body that is coupled to the movable lens; a lens tube that encases and airtightly seals the imaging element, the movable lens, and the magnetic body; a magnetic field producing unit that is disposed on an outer surface of the lens tube and that is movable in the direction of the optic axis; and a wire member that has one end thereof attached to the magnetic field producing unit, and that is operative to move the magnetic field producing unit in the direction of the optic axis. The magnetic field producing unit includes two magnetic field producing members disposed with a predetermined gap therebetween in the direction of the optic axis, the magnetic body is disposed opposed to the predetermined gap within the lens tube, and the movable lens is moved by any one of deformation and movement of the wire member.

Magnetic coupling lens driving actuator

An impact drive actuator comprises a fixing member, a vibrator, a vibrating member, a movable body, a drive circuit, and a friction adjustment section. The friction adjustment section includes a first electrode disposed on a surface of the movable body that faces the vibrating member and a second electrode disposed on a surface of the vibrating member that faces the movable body and electrically isolated from the first electrode. An electrostatic force is caused to act between the first and second electrodes to change an electrostatic force between the vibrating member and movable body so as to change the frictional force acting between the movable body and vibrating member.

Impact drive actuator

To provide a position control method for a shape memory alloy actuator that improves positioning accuracy of the actuator while ensuring satisfactory response until achieving positioning, the method includes a commanded resistance value setting step of setting a commanded resistance value that corresponds to the predetermined length, a resistance value measurement step of measuring the value of resistance, a resistance value comparison step of comparing the commanded resistance value and the measured resistance value, a first control step of controlling the length of the shape memory alloy using a first gain based on the result of comparison until the commanded resistance value is reached, a termination determination step of making a determination as to a condition for terminating the first control step, and a second control step of keeping the moving body stationary, upon determination of termination in the termination determination step, by retaining the length of the shape memory alloy using a second gain smaller than the first gain based on the result of the comparison, wherein the second control step is continued until a commanded resistance value is set again, thereby performing position control of the moving body.

Position control method for shape memory alloy actuator

An inertial drive actuator includes a fixed member, a vibration substrate which is disposed on the fixed member, a displacement generating unit which causes a reciprocating movement of the vibration substrate with respect to the fixed member, a moving body which is disposed on the vibration substrate, and which is made of a magnetic body which moves with respect to the vibration substrate due to inertia with respect to the reciprocating movement of the vibration substrate, a coil which is provided on the moving body, and a driving unit which applies a voltage for causing a reciprocating movement of the moving body, and which controls a frictional force generated between the vibration substrate and the moving body by making an electromagnetic force act by applying an electric current to the coil.

To provide an inertial drive actuator that is easy to assemble and achieves high accuracy in position detection, the actuator has a fixed member, a vibration substrate, a piezoelectric element (movement unit), first and second moving bodies that moves relative to the vibration substrate by inertia, a first electrode provided on the surface of each of the first and second moving bodies, a second electrode provided on a surface of the vibration substrate, an insulating film provided between the first electrode and the second electrode, a drive unit, and a position detection unit that detects the position of the moving body with respect to the vibration substrate based on capacitance of the portion in which the first electrode and the second electrode are opposed to each other.

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Kawasaki, Japan

Kaoru Matsuki