Abstract: A pixel pair (25) includes a first pixel readout transistor (40), a second pixel readout transistor (41), an electric charge accumulator (42), a reset transistor (43), an amplifier transistor (44), and a row selection transistor (45). The first pixel readout transistor (40) reads out signal charge of a first pixel (21). The second pixel readout transistor (41) reads out signal charge of a second pixel (22). The electric charge accumulator (42) temporarily accumulates the signal charge read out from each pixel. The reset transistor (43) resets the electric charge accumulator (42). The amplifier transistor (44) converts the signal charge accumulated in the electric charge accumulator (42) into signal voltage, and outputs the signal voltage. The row selection transistor (45) selects a row from which the signal voltage is to be transferred to vertical signal lines (50).

Abstract: An optical apparatus includes a magnification-varying lens, a controller configured to control an actuator, and to move the magnification-varying lens; and a temperature detector configured to detect a temperature of the optical apparatus, wherein the controller sets a telephoto end position of the magnification-varying lens to a first position when the temperature detected by the temperature detector is a first temperature, and the controller sets the telephoto end position of the magnification-varying lens to a second position closer to a wide-angle side than the first position when the temperature detected by the temperature detector is a second temperature higher than the first temperature.

Abstract: A lens apparatus includes a lens barrel, an image-capturing optical system, and a diaphragm device disposed in an optical path of the image-capturing optical system. The diaphragm device includes a plurality of diaphragm blades and an electroactive polymer actuator configured to move the plurality of diaphragm blades from a diaphragm-open state to a diaphragm-closed state and from a diaphragm-closed state to a diaphragm-open state.

Abstract: An optical apparatus includes a magnification-varying lens, a controller configured to control an actuator, and to move the magnification-varying lens; and a temperature detector configured to detect a temperature of the optical apparatus, wherein the controller sets a telephoto end position of the magnification-varying lens to a first position when the temperature detected by the temperature detector is a first temperature, and the controller sets the telephoto end position of the magnification-varying lens to a second position closer to a wide-angle side than the first position when the temperature detected by the temperature detector is a second temperature higher than the first temperature.

Abstract: A lens barrel includes: first and second movable lens units; first and second drive sources for moving the first and second movable lens units in a direction parallel to an optical axis, respectively; guide members for each retaining the first and second movable lens units and for guiding movements of the first and second movable lens units; and a reference position detector for detecting reference positions for the first and second movable lens units, in which: the reference position detector has light emitting receiving elements; the first and second movable lens units have sleeves each engaged with the guide members and have light blocking portions for detecting the reference positions by the light emitting and receiving elements of the reference position detector; and the first and second lens units can move in the optical axis direction, with their respective light blocking portions passing each other without any interference.

Abstract: A lens barrel includes: first and second movable lens units; first and second drive sources for moving the first and second movable lens units in a direction parallel to an optical axis, respectively; guide members for each retaining the first and second movable lens units and for guiding movements of the first and second movable lens units; and a reference position detector for detecting reference positions for the first and second movable lens units, in which: the reference position detector has light emitting receiving elements; the first and second movable lens units have sleeves each engaged with the guide members and have light blocking portions for detecting the reference positions by the light emitting and receiving elements of the reference position detector; and the first and second lens units can move in the optical axis direction, with their respective light blocking portions passing each other without any interference.

Abstract: A lens apparatus includes a lens barrel, an image-capturing optical system, and a diaphragm device disposed in an optical path of the image-capturing optical system. The diaphragm device includes a plurality of diaphragm blades and an electroactive polymer actuator configured to move the plurality of diaphragm blades from a diaphragm-open state to a diaphragm-closed state and from a diaphragm-closed state to a diaphragm-open state.

Abstract: A quantity-of-light adjusting device includes a drive source, a base member having an opening formed therein, and a blade arranged to move by being driven by the drive source and having three openings formed therein side by side in a row in a moving direction of the blade, wherein, among the three openings formed in the blade, the opening situated in the middle of the row is larger than the opening formed in the base member.

Abstract: A quantity-of-light adjusting device includes a drive source, a base member having an opening formed therein, and a blade arranged to move by being driven by the drive source and having three openings formed therein side by side in a row in a moving direction of the blade, wherein, among the three openings formed in the blade, the opening situated in the middle of the row is larger than the opening formed in the base member.

Abstract: A quantity-of-light adjusting device includes a drive source, a base member having an opening formed therein, and a blade arranged to move by being driven by the drive source and having three openings formed therein side by side in a row in a moving direction of the blade, wherein, among the three openings formed in the blade, the opening situated in the middle of the row is larger than the opening formed in the base member.

Abstract: A turbine cooling apparatus comprising a turbine disk having a plurality of moving blades, a torque tube coupled coaxially to one surface side of the turbine disk and having a thick stepped inner wall portion in the central portion thereof, an air separator fitted on the torque tube with the inner surface thereof in contact with the outer surface of the torque tube so that a passage through which cooling air is supplied to the moving blades via the turbine disk is defined between the air separator and the torque tube, and a torque tube cooling hollow portion provided along and in the vicinity of the outer surface of the thick stepped wall portion of the torque tube.

Abstract: The present invention relates to an optical instrument such as an optical axis deflecting device or an image stabilizing device having an optical member supported for rotation about a predetermined axis and rotated about the predetermined axis to thereby deflect the optical axis of passing light, moving means adapted to move in a direction along a plane inclined by a predetermined angle from a plane perpendicular to the predetermined axis to thereby rotate the optical member about the predetermined axis, and driving means for driving the moving means. With such construction, a driving force generated by the driving means acts on that portion of the optical member which is far from the rotational shaft thereof and as a result, a driving torque for driving the optical member can be enhanced without causing the bulkiness and higher cost of the device and an increase in consumed electric power.

Abstract: A focus detecting system for effecting automatic focusing by detecting the in-focus position of a focusing lens and driving the focusing lens to this position. This system has a signal processing means supplied with a video signal from image pick-up means to output a signal related to the in-focus state, a detection means for detecting the position of a focusing lens for forming an image in the image pick-up means, when the signal output from the signal processing means is processed, and a calculating means for calculating the presupposed in-focus position of the focusing lens from at least two groups of items of data on the signal outputted from the signal processing means and on the position of the focusing lens supplied from the detection means. Each time the deviation of the present position of the focusing lens from the presupposed in-focus position is calculated, the focusing lens is driven to move to an extent smaller than the deviation, thus being focused.

Abstract: An automatic follow-up focus detecting device comprises means for shiftably setting a follow-up field; extracting means for extracting a feature of an object in relation to the follow-up field; storing means for storing the extracted feature; detecting means for detecting a relative shift between the object and the device on the basis of the feature of the object extracted by the extracting means and the feature stored by the storing means; and shifting means for shifting a distance measuring field following the object according to the relative shift.

Abstract: This specification discloses an optical instrument comprising a focusing lens, a zooming lens, first detecting means for detecting the focus state of the focusing lens, and control means for moving the zooming lens in conformity with the output of the first detecting means and making the size of an object which is occupied in the picture plane substantially constant, the control means varying the movement speed of the zooming lens in conformity with the output of the first detecting means.

Abstract: In an optical system arranged to detect a distance to an object to be photographed by projecting beams of light from a light emitting element which emits visible light or infrared rays or the like and by receiving reflected light from the object at a light receiving element, a light projecting lens system having a plurality of optical axes is arranged in front of the light emitting element to have a spherical or aspherical surface on the side of the object and a plurality of planes for forming the plurality of optical axes on the side of the light emitting element.

Abstract: An active, external distance measurement type apparatus for focus adjustment of a photographic lens comprises a light emitting element arranged outside a light beam passing through the photographic lens, a projection lens for projecting light from the light emitting element to an object field, a collection lens arranged in spaced relation to the projection lens by a base line length, and a photosensitive element to which the irregular reflection of the light rays projected by the projection lens onto an object to be phtotgraphed is directed by the collection lens. An optical unit is arranged to refract a portion of each of a projecting light beam and a receiving light beam in a different direction so that parallax is compensated for.

Abstract: A glass tube bending apparatus according to the present invention includes a drum for bending a heated/softened glass tube into a circular shape, a first driving device, coupled to the drum, for moving the drum straight, and a second driving device, coupled to the drum, for rotating the drum in a direction, and a control for independently controlling the rotating speed and the moving speed of the drum. According to this apparatus, the operation speeds of rotating and moving of the drum can be controlled independently. Therefore, distortion of glass tubes can be decreased, and thermal bending of tubes can be performed with high precision. Further, various sorts of glass tubes can be treated. Still further, since the first driving device and the second driving device are operated in synchronism, the precision of the thermal bending of glass tubes is enhanced.

Abstract: An automatic object image follow-up device includes a setting circuit for shiftably setting a follow-up field; an extracting circuit for extracting a feature of an object in relation to the follow-up field; a store for storing the extracted feature; a detecting circuit for detecting a relative shift between the object and the device on the basis of the feature of the object extracted by the extracting circuit and the feature stored by the store; and a shifting circuit for shifting the follow-up field following up the object according to the relative shift.

Abstract: The invention relates to an active type AF apparatus. In an AF type apparatus for radiating light from a projecting means to an object, receiving light reflected by the object by first and second photosensor portions, and obtaining distance data based on outputs form the photosensor portions, the signals from the first and second photosensor portions are time-divisionally integrated in the same direction by a single integrating circuit and distance data is obtained based on data on integrated values.