Abstract: An optical apparatus is configured to execute a manual focus mode in which focusing is performed by an operation of a manual operating unit by moving an image pickup optical system configured to form an optical image of an object. The optical apparatus includes a diaphragm configured to adjust a light quantity, and a controller configured to control a movement of the image pickup optical system in accordance with an operating amount of the manual operating unit so that a unit moving amount that is a moving amount of an in-focus position of the image pickup optical system per unit operation of the manual operating unit corresponds to a product between a diameter of a minimum confusion circle of the image pickup optical system, a diaphragm value of the diaphragm in the manual focus mode, and a coefficient that is a natural number or a reciprocal of the natural number.

Abstract: The lens apparatus allows adjustment of lens tilt due to component variation caused by tolerance. The lens barrel includes a straight guiding barrel having a straight groove portion, a cam barrel having a cam groove portion, a straight movable barrel disposed outside the straight guiding and cam barrels, holding a lens and being movable in an optical axis direction by a relative movement of the straight guiding and cam barrels. A cam follower includes first and second cylindrical portions that respectively engage with the straight groove and cam groove portions. The first and second cylindrical portions have central axes decentered from each other. The cam follower includes an operation portion allowing rotational operation of the first and second cylindrical portions from outside of the straight movable barrel. A connecting member connects the cam follower and the straight movable barrel with each other.

Abstract: Provided is a photodetector including a light receiving portion that accumulates and outputs the amount of received observation light as electric charges; an offset portion that adds an offset signal to an output signal from the light receiving portion; an AD conversion portion that AD-converts the sum of the output signal and the offset signal obtained by the offset portion; a control unit that controls the AD conversion portion such that it A-D converts said sum when the light receiving portion is charged and discharged; and an offset correcting portion that corrects the offset signal by adjusting the value of the offset signal contained in the black level value such that the black level value obtained by the AD conversion portion from said sum when the capacitor is discharged becomes equal to a predetermined target value.

Abstract: The optical apparatus includes plural stop blades, an opening/closing mechanism moving the stop blades in opening and closing directions, an actuator driving the opening/closing mechanism, and a controller controlling drive of the actuator. The controller calculates, when moving the stop blades from a first position to a second position in video capturing, a control driving amount of the actuator that is a sum of a target driving amount corresponding to a moving amount of the stop blades from the first position to the second position and a driving correction amount that varies depending on a position and a moving direction of the aperture blades, the position being at least one of the first and second positions. The controller controls the drive of the actuator based on the control driving amount.

Abstract: The invention is to provide a leather-like sheet having a fine image drawn by an inkjet printing method, etc., on its surface and having practically sufficient physical properties. This invention includes a leather-like sheet including (i) a fibrous substrate and (ii) a porous layer thereon, the porous layer having a surface having open pores with a diameter of 1 ?m or more and the porous layer having the surface having an image whose definition is 5 dots/mm or more, and a process for the production thereof.

Abstract: The optical apparatus includes an image pickup optical system including a focus lens, a controller controlling movement of the focus lens in an optical axis direction of the image pickup optical system, a shake detector detecting a shake amount of the optical apparatus in the optical axis direction, and a memory storing plural shake amounts sequentially detected by the shake detector. The controller calculates, in response to a start instruction of exposure for the image pickup and before start of the exposure, a predictive value of the shake amount for a time point of the exposure based on the plural shake amounts stored in the memory and including at least one shake amount detected after the start instruction of exposure. The controller moves the focus lens to a position corresponding to the predictive value before the start of the exposure.

Abstract: An optical apparatus is configured to execute a manual focus mode in which focusing is performed by an operation of a manual operating unit by moving an image pickup optical system configured to form an optical image of an object. The optical apparatus includes a diaphragm configured to adjust a light quantity, and a controller configured to control a movement of the image pickup optical system in accordance with an operating amount of the manual operating unit so that a unit moving amount that is a moving amount of an in-focus position of the image pickup optical system per unit operation of the manual operating unit corresponds to a product between a diameter of a minimum confusion circle of the image pickup optical system, a diaphragm value of the diaphragm in the manual focus mode, and a coefficient that is a natural number or a reciprocal of the natural number.

Abstract: An optical apparatus includes a zoom optical system including a focus lens unit, an operation portion configured to manually and mechanically change a focal length of the zoom optical system, and a controller configured to control the focus lens unit so as to move along a track depending on an object distance in an operation of the operation portion. The controller moves the focus lens unit to a second position that is different from a first position that is a position of the focus lens unit in disconnecting a power when a first focal length that is a focal length of the zoom optical system in disconnecting the power is different from a second focal length that is a focal length of the zoom optical system in reconnecting the power.

Abstract: A lens-interchangeable camera includes a focus detector performing focus detection and a controller performing a drive control of a lens based on a defocus amount. The controller finishes focusing operation without driving the lens when the defocus amount is out a range of a first in-focus determination width, and performs the focusing operation when the defocus amount is out a range of the first in-focus determination width. The controller finishes the focusing operation without performing the focus detection again after completing the drive when the defocus amount is out a range of a second in-focus determination width, and performs the focus detection again after completing the drive when the defocus amount is out a range of the second in-focus determination width. The second in-focus determination width is set to be greater than the first in-focus determination width and be greater than or equal to a drive limit value.

Abstract: The optical apparatus includes an image pickup optical system including a focus lens, a controller controlling movement of the focus lens in an optical axis direction of the image pickup optical system, a shake detector detecting a shake amount of the optical apparatus in the optical axis direction, and a memory storing plural shake amounts sequentially detected by the shake detector. The controller calculates, in response to a start instruction of exposure for the image pickup and before start of the exposure, a predictive value of the shake amount for a time point of the exposure based on the plural shake amounts stored in the memory and including at least one shake amount detected after the start instruction of exposure. The controller moves the focus lens to a position corresponding to the predictive value before the start of the exposure.

Abstract: An interchangeable lens which is removably mounted on a camera body including an image sensor includes a tilt unit configured to move a lens unit in a tilt direction with respect to the image sensor, a shift unit configured to move the lens unit in a shift direction with respect to the image sensor, a changing unit configured to change a relative angle between the shift unit and the tilt unit by relatively rotating the shift unit and the tilt unit, a detection unit configured to detect the relative angle, and a control unit configured to transmit to the camera body a detection result of the relative angle detected by the detection unit.

Abstract: There is provided a physical property measuring method for a TFT liquid crystal panel, includes an impedance setting step of setting the impedance between the source and drain of a TFT of the TFT liquid crystal panel to be less than or equal to a predetermined value, a voltage application step of applying a voltage that cyclically varies to a liquid crystal layer of the TFT liquid crystal panel. And the method further includes a physical property measuring step of measuring a transient current flowing through the liquid crystal layer to which the voltage that cyclically varies is applied in the voltage application step to measure physical properties of the liquid crystal layer.

Abstract: The optical apparatus includes an image pickup optical system including a focus lens, a controller controlling movement of the focus lens in an optical axis direction of the image pickup optical system, a shake detector detecting a shake amount of the optical apparatus in the optical axis direction, and a memory storing plural shake amounts sequentially detected by the shake detector. The controller calculates, in response to a start instruction of exposure for the image pickup and before start of the exposure, a predictive value of the shake amount for a time point of the exposure based on the plural shake amounts stored in the memory and including at least one shake amount detected after the start instruction of exposure. The controller moves the focus lens to a position corresponding to the predictive value before the start of the exposure.

Abstract: There is provided a physical property measuring method for a TFT liquid crystal panel, includes an impedance setting step of setting the impedance between the source and drain of a TFT of the TFT liquid crystal panel to be less than or equal to a predetermined value, a voltage application step of applying a voltage that cyclically varies to a liquid crystal layer of the TFT liquid crystal panel. And the method further includes a physical property measuring step of measuring a transient current flowing through the liquid crystal layer to which the voltage that cyclically varies is applied in the voltage application step to measure physical properties of the liquid crystal layer.

Abstract: The optical apparatus includes plural stop blades, an opening/closing mechanism moving the stop blades in opening and closing directions, an actuator driving the opening/closing mechanism, and a controller controlling drive of the actuator. The controller calculates, when moving the stop blades from a first position to a second position in video capturing, a control driving amount of the actuator that is a sum of a target driving amount corresponding to a moving amount of the stop blades from the first position to the second position and a driving correction amount that varies depending on a position and a moving direction of the aperture blades, the position being at least one of the first and second positions. The controller controls the drive of the actuator based on the control driving amount.

Abstract: A lens-interchangeable camera includes a focus detector performing focus detection and a controller performing a drive control of a lens based on a defocus amount. The controller finishes focusing operation without driving the lens when the defocus amount is out a range of a first in-focus determination width, and performs the focusing operation when the defocus amount is out a range of the first in-focus determination width. The controller finishes the focusing operation without performing the focus detection again after completing the drive when the defocus amount is out a range of a second in-focus determination width, and performs the focus detection again after completing the drive when the defocus amount is out a range of the second in-focus determination width. The second in-focus determination width is set to be greater than the first in-focus determination width and be greater than or equal to a drive limit value.

Abstract: There is provided a physical property measuring method for a TFT liquid crystal panel, includes an impedance setting step of setting the impedance between the source and drain of a TFT of the TFT liquid crystal panel to be less than or equal to a predetermined value, a voltage application step of applying a voltage that cyclically varies to a liquid crystal layer of the TFT liquid crystal panel. And the method further includes a physical property measuring step of measuring a transient current flowing through the liquid crystal layer to which the voltage that cyclically varies is applied in the voltage application step to measure physical properties of the liquid crystal layer.

Abstract: There is provided a physical property measuring method for a TFT liquid crystal panel, includes an impedance setting step of setting the impedance between the source and drain of a TFT of the TFT liquid crystal panel to be less than or equal to a predetermined value, a voltage application step of applying a voltage that cyclically varies to a liquid crystal layer of the TFT liquid crystal panel. And the method further includes a physical property measuring step of measuring a transient current flowing through the liquid crystal layer to which the voltage that cyclically varies is applied in the voltage application step to measure physical properties of the liquid crystal layer.

Abstract: The invention is to provide a leather-like sheet having a fine image drawn by an inkjet printing method, etc., on its surface and having practically sufficient physical properties. This invention includes a leather-like sheet comprising (i) a fibrous substrate and (ii) a porous layer thereon, the porous layer having a surface having open pores with a diameter of 1 ?m or more and the porous layer having the surface having an image whose definition is 5 dots/mm or more, and a process for the production thereof.

Abstract: An interchangeable lens which is removably mounted on a camera body including an image sensor includes a tilt unit configured to move a lens unit in a tilt direction with respect to the image sensor, a shift unit configured to move the lens unit in a shift direction with respect to the image sensor, a changing unit configured to change a relative angle between the shift unit and the tilt unit by relatively rotating the shift unit and the tilt unit, a detection unit configured to detect the relative angle, and a control unit configured to transmit to the camera body a detection result of the relative angle detected by the detection unit.