摘要:
It is provided an imaging apparatus including a plurality of motors configured to be driven to move lenses in synchronous with a drive pulse, a position detection unit configured to detect one of positions of the lenses moved by the driving of the plurality of motors, an operation unit configured to perform an output corresponding to an operation in response to the operation by a user, and a controller configured to receive the output from the position detection unit and control the plurality of motors. The controller supplies the number of drive pulses calculated based on a target position for moving the lens calculated based on the output from the operation unit and a lens position detected by the position detection unit.
摘要:
A piezoelectric resonator device includes a metal base through which at least two metal lead terminals are erected via an insulating material, a piezoelectric resonator plate that is placed on the metal lead terminals and is electrically connected to the metal lead terminals via an electroconductive resin adhesive, and a metal lid that hermetically covers the piezoelectric resonator plate placed on the metal lead terminals.The electroconductive resin adhesive has flexibility of at least a pencil hardness of 4B. Also, an anticorrosive film is formed on the outer surface of the metal base and the metal lead terminals, and the electroconductive resin adhesive is used for the direct electrical connecting and mechanical joining of the ends of the piezoelectric resonator plate to the upper face of the anticorrosive film of the metal lead terminals inside the hermetic seal.Alternatively, the piezoelectric resonator plate has a rectangular shape in plan view, and is placed on the metal lead terminals with the main face thereof facing in the same direction as the plane of the metal base. Wide nail-head parts on which the piezoelectric resonator plate is placed are formed at the end portions of the metal lead terminals inside the hermetic seal, and the piezoelectric resonator plate is attached at both ends of its long sides via the electroconductive resin adhesive in a state in which the middle parts of the short sides of the piezoelectric resonator plate are placed near the location of the center of gravity of the nail-head parts. The width of the piezoelectric resonator plate in its short side direction is set to not more than 2.8 times the width of the region of the nail-head part on the top portion thereof in the same direction that is joined with the electroconductive resin adhesive.
摘要:
A focus adjustment apparatus comprises a moving unit configured to move a focusing lens, a focus adjusting unit configured to perform focus adjustment by moving the focusing lens such that the sharpness of an image obtained from an image pickup unit picking up an object image is increased, and an in-focus position measuring unit configured to measure an in-focus position in a different manner from the focus adjusting unit. The focus adjusting unit moves the focusing lens to the in-focus position measured by the in-focus position measuring unit when a direction of movement of the focusing lens in which the image sharpness is increased is matched with the direction of a current position of the focusing lens relative to the in-focus position measured by the in-focus position measuring unit, and does not move the focusing lens to the measured in-focus position when both the directions are not matched with each other.
摘要:
This invention discloses a position detecting apparatus that can suppress the decrease of position detection accuracy. The position detecting apparatus includes a position sensor outputting position detecting signals which have different phases respectively that change periodically according to the movement of an object, and a phase converting unit generating phase converted signals which have different phases respectively by giving predetermined phase differences to the plurality of position detecting signals. In addition, the position detecting apparatus further includes a first calculating unit obtaining first position data corresponding to a position of the object based on the plurality of position detecting signals, and a second calculating unit obtaining second position data corresponding to a position of the object based on the plurality of phase converted signals. Furthermore, the position detecting apparatus further includes a third calculating unit obtaining a position of the object based on the first and the second position data.