Abstract: A lens barrel of the present invention includes an image stabilizer configured to correct image shake by driving optical devices, a ring-shaped electronic circuit board on which a pair of the acceleration sensors is arranged at each of positions facing each other with an optical axis of the image pickup optical system in between, and a lens barrel body in which at least the image pickup optical system, the image stabilizer, and the ring-shaped electronic circuit board are accommodated, and the ring-shaped electronic circuit board is fixed to the lens barrel body so as to be perpendicular to the optical axis of the image pickup optical system, and each of the positions where each of the pair of acceleration sensors is fixed is a position where each of the pair of acceleration sensors outputs a same signal when vibration other than camera shake is generated.

Abstract: A lens barrel of the present invention includes an image stabilizer configured to correct image shake by driving optical devices, a ring-shaped electronic circuit board on which a pair of the acceleration sensors is arranged at each of positions facing each other with an optical axis of the image pickup optical system in between, and a lens barrel body in which at least the image pickup optical system, the image stabilizer, and the ring-shaped electronic circuit board are accommodated, and the ring-shaped electronic circuit board is fixed to the lens barrel body so as to be perpendicular to the optical axis of the image pickup optical system, and each of the positions where each of the pair of acceleration sensors is fixed is a position where each of the pair of acceleration sensors outputs a same signal when vibration other than camera shake is generated.

Abstract: A camera shake correction apparatus (100) comprising a coil (8) provided at the movable member (2), a magnet (41) used for driving provided at the stationary member (4), facing the coil (8) in the direction orthogonal to the optical axis (C), a yoke (43) provided at the stationary member (4), facing the coil (8) and the magnet (41) used for driving in the direction of the optical axis, the yoke and the magnet used for driving constituting a magnetic circuit (6), and a magnet (11) used for biasing provided at the movable member (2), facing the yoke (43) in a non-contact manner on the opposite side of the coil (8) and the magnet (41) used for driving, the magnet (41) used for biasing applying a magnetic suction force to the yoke (43).

Abstract: A lens driving apparatus includes a holding mechanism that holds a movable frame holding a lens at a position close to a reference position. A controller controls a first driving unit and a second driving unit so that the movable frame is held at the reference position when the power is turned off.

Abstract: A camera shake correction apparatus (100) comprising a coil (8) provided at the movable member (2), a magnet (41) used for driving provided at the stationary member (4), facing the coil (8) in the direction orthogonal to the optical axis (C), a yoke (43) provided at the stationary member (4), facing the coil (8) and the magnet (41) used for driving in the direction of the optical axis, the yoke and the magnet used for driving constituting a magnetic circuit (6), and a magnet (11) used for biasing provided at the movable member (2), facing the yoke (43) in a non-contact manner on the opposite side of the coil (8) and the magnet (41) used for driving, the magnet (41) used for biasing applying a magnetic suction force to the yoke (43).

Abstract: A blur correction apparatus includes a first fixing member, a moveable member and a second fixing member. A coil for generating a magnetic flux is arranged on the first fixing member. The movable member includes (1) an optical element, (2) a first magnet facing the coil, and (3) a second magnet arranged along a line parallel with an optical axis of the optical element and facing the first magnet, such that the first magnet is arranged between the second magnet and the coil. The movable member can move in a direction perpendicular to the optical axis. The second fixing member includes a hall element that is arranged adjacent to the second magnet. The second magnet is arranged between the first magnet and the hall element. The coil, the first magnet, the second magnet and the hall element are sequentially disposed in a line parallel with the optical axis, in this order.

Abstract: A blur correction apparatus includes a first fixing member, a moveable member and a second fixing member. A coil for generating a magnetic flux is arranged on the first fixing member. The movable member includes (1) an optical element, (2) a first magnet facing the coil, and (3) a second magnet arranged along a line parallel with an optical axis of the optical element and facing the first magnet, such that the first magnet is arranged between the second magnet and the coil. The movable member can move in a direction perpendicular to the optical axis. The second fixing member includes a hall element that is arranged adjacent to the second magnet. The second magnet is arranged between the first magnet and the hall element. The coil, the first magnet, the second magnet and the hall element are sequentially disposed in a line parallel with the optical axis, in this order.

Abstract: A blur correction apparatus includes a first fixing member, a moveable member and a second fixing member. A coil for generating a magnetic flux is arranged on the first fixing member. The movable member includes (1) a first magnet facing the coil, (2) a second magnet arranged adjacent to the first magnet, such that the first magnet is arranged between the second magnet and the coil arranged in the first fixing member, and (3) an optical element. The movable member can move in a direction perpendicular to an optical axis of the optical element relative to the first fixing member. The second fixing member includes a hall element that is arranged adjacent to the second magnet in the movable member.

Abstract: A image stabilization apparatus includes a support member, a holder where a lens is movable between a retraction position and a vibration-prevention-and-correction region, an urging member that urges the holder in a direction of the vibration-prevention-and-correction region, and a drive member that causes the lens in the vibration-prevention-and-correction region to move to the retraction position when the drive member is in a first positional relation relative to the holder, and allows movement of the lens located in the retraction position to the vibration-prevention-and-correction region direction when the drive member is in a second positional relation relative to the holder, wherein when the holder and the drive member are in the second positional relation, the urging member causes the lens to move to the vibration-prevention-and-correction region from the retraction position, and in the position, enables movement of the holder within a plane perpendicular to the optical axis.

Abstract: A blur correction apparatus includes a first fixing member, a moveable member and a second fixing member. A coil for generating a magnetic flux is arranged on the first fixing member. The movable member includes (1) a first magnet facing the coil, (2) a second magnet arranged adjacent to the first magnet, such that the first magnet is arranged between the second magnet and the coil arranged in the first fixing member, and (3) an optical element. The movable member can move in a direction perpendicular to an optical axis of the optical element relative to the first fixing member. The second fixing member includes a hall element that is arranged adjacent to the second magnet in the movable member.

Abstract: A image stabilization apparatus includes a support member, a holder where a lens is movable between a retraction position and a vibration-prevention-and-correction region, an urging member that urges the holder in a direction of the vibration-prevention-and-correction region, and a drive member that causes the lens in the vibration-prevention-and-correction region to move to the retraction position when the drive member is in a first positional relation relative to the holder, and allows movement of the lens located in the retraction position to the vibration-prevention-and-correction region direction when the drive member is in a second positional relation relative to the holder, wherein when the holder and the drive member are in the second positional relation, the urging member causes the lens to move to the vibration-prevention-and-correction region from the retraction position, and in the position, enables movement of the holder within a plane perpendicular to the optical axis.

Abstract: An object is to provide an endoscope system that is capable of cooling photoelectric conversion devices provided in an inserted portion while suppressing an increase in an outer diameter of the inserted portion. An endoscope system employed includes a long, thin inserted portion; photoelectric conversion devices that are mounted at a distal end of the inserted portion; a fluid-feed channel that is provided in the inserted portion and that has a fluid-feed port which opens at the distal end of the inserted portion; a radiator that is connected to an intermediate position of the fluid-feed channel and that is provided in a manner enabling heat exchange with the photoelectric conversion devices; and a fluid-supply-direction switching portion that switches a supply direction of cooling fluid fed by the fluid-feed channel to the fluid-feed port side or to the radiator side.

Abstract: A light source apparatus in which a light guide member is held reliably also in the configuration in which the light guide member is displaced. The light source apparatus includes a plurality of light sources arranged on an identical virtual circle, a rotary table rotatable about an axial line of the virtual circle, a drive unit configured to rotate the rotary table, a light guide member configured to guide alight emitted from the light sources, and a fixing member configured to fix the light guide member in a state in which an outgoing end is positioned at the center of the virtual circle, and an incoming end is directed radially outwardly of the virtual circle. The fixing member includes supporting parts which receive the light guide member from the incoming end side to limit a movement of the light guide member toward the incoming end.

Abstract: Provided is a light source apparatus for illuminating an illumination area via an illumination optical part, including a plurality of light sources for emitting illumination light; one heat-absorbing member for absorbing heat which the plurality of light sources generates; a heat-radiating part for radiating the heat; and a heat-transporting part thermally connected to the heat-absorbing member and the heat-radiating part; wherein the heat-transporting part is formed of a tube member containing a refrigerant for transmitting the heat and is provided at a position shifted from an irradiation position of the illumination light.

Abstract: An object is to provide a coupling that prevents connection failure of a scope and a light source device and that is compatible with existing scopes as well as to provide an endoscope system having the same. A coupling employed includes a columnar plug and a socket into which the plug is inserted and connected. The plug has engaging projections that are radially projected from and retracted into an outer circumferential surface thereof. The socket has a connection surface to which an end surface of the plug is abutted, a pressing member having a through-hole that is slightly larger than the outside diameter of the plug, a coil spring that urges the pressing member along an insertion direction of the plug toward the connection surface, and stopper members that stop the pressing member so as to push it in a direction opposite to a direction toward the connection surface until the engaging projections pass through the through-hole in the pressing member.

Abstract: A light source device and a projector having the light source device provide a light emission unit for radiating illuminating light L, a light emission control unit for controlling the amount of light of the illuminating beam L radiated by the light emission unit, a cooling unit for cooling the heat generated at the time the light emission unit radiates the illuminating light L, a cooling control unit for controlling the amount of heat cooled by the cooling unit, an operation unit capable of regulating a manipulated variable amount with respect to a prescribed controlled system, and a calculation unit for computing at least one of the controlled variables of the light emission control unit and the cooling control unit based on the manipulated variable regulated by the operation unit.

Abstract: A constant-temperature liquid circulating apparatus including a constant-temperature liquid circuit section, a refrigerating circuit section and a control section in which the refrigerating circuit section includes a main circuit section having a compressor whose revolution speed is controlled by an inverter power source. The main circuit section has a condenser, an electronic expansion valve and an evaporator, and the refrigerating circuit section also includes a hot gas circuit section which bypasses the condenser and which has an electronic expansion valve. The constant-temperature circuit section includes a heat exchanger, a temperature sensor and a circulating unit; and the control section controls the opening degree of the electronic expansion valve, and the revolution speed of the compressor according to a signal from the temperature sensor, thereby controlling the temperature of constant-temperature liquid supplied to a load to a predetermined temperature.

Abstract: In a constant-temperature liquid circulating apparatus provided with a constant-temperature liquid circuit section, a refrigerating circuit section and a control section, the refrigerating circuit section is provided with a main circuit section which comprises a compressor whose revolution speed is controlled by an inverter power source, a condenser, an electronic expansion valve and an evaporator, and a hot gas circuit section which bypasses the condenser and which has an electronic expansion valve; the constant-temperature circuit section is provided with a heat exchanger, a temperature sensor and circulating means; and the control section controls the opening degree of the electronic expansion valve, and the revolution speed of the compressor according to a signal from the temperature sensor, thereby controlling the temperature of constant-temperature liquid supplied to a load to a predetermined temperature.

Abstract: In the coolant circulating apparatus for supplying a coolant in a tank to a heat load connected to the tank through a feed pipe and a return pipe in a circulating manner to cool the heat load, the coolant building up in the feed pipe, the heat load, and the return pipe is caused to flow back into the tank and recovered by supplying compressed gas from a compressed gas supply source into the feed pipe through a recovery gas duct when operation of the apparatus is completed and changes in a liquid level in the tank caused by supply and recovery of the coolant to and from the heat load are absorbed by, supplying or discharging compressed gas from and into a liquid level regulating gas duct into and from a liquid level regulating chamber to thereby push the coolant out from the liquid level regulating chamber or cause the coolant to flow into the liquid level regulating chamber.

Abstract: In the coolant circulating apparatus for supplying a coolant in a tank to a heat load connected to the tank through a feed pipe and a return pipe in a circulating manner to cool the heat load, the coolant building up in the feed pipe, the heat load, and the return pipe is caused to flow back into the tank and recovered by supplying compressed gas from a compressed gas supply source into the feed pipe through a recovery gas duct when operation of the apparatus is completed and changes in a liquid level in the tank caused by supply and recovery of the coolant to and from the heat load are absorbed by supplying or discharging compressed gas from and into a liquid level regulating gas duct into and from a liquid level regulating chamber to thereby push the coolant out from the liquid level regulating chamber or cause the coolant to flow into the liquid level regulating chamber.