Abstract: A rotation of a first eccentric member adjusts a parallel eccentricity of an optical element held by a holding member, rotation of a second eccentric member adjusts a tilt eccentricity of the optical element held by a holding member, and change of a position of an engaging member and a position where the second eccentric member is engaged with a second groove portion adjusts a position of the optical element in the direction of an optical axis.

Abstract: An optical apparatus includes a first driver configured to drive a focus lens unit in autofocusing, a second driver configured to drive the focus lens unit in the autofocusing, a first detector configured to detect a driving amount of the first driver, a second detector configured to detect a driving amount of the second driver, a memory configured to store a relationship between information of detection results of the first and second detectors, and an object distance as a distance from the optical apparatus to an object, and a controller configured to obtain information of the object distance based upon the relationship stored in the memory and the detection results of the first and second detectors.

Abstract: A rotation of a first eccentric member adjusts a parallel eccentricity of an optical element held by a holding member, rotation of a second eccentric member adjusts a tilt eccentricity of the optical element held by a holding member, and change of a position of an engaging member and a position where the second eccentric member is engaged with a second groove portion adjusts a position of the optical element in the direction of an optical axis.

Abstract: The lens apparatus includes a guide barrel including a guide groove portion penetrating through a circumferential wall of the guide barrel, and a cam barrel disposed rotatably and including a penetrating cam groove portion penetrating through a circumferential wall of the cam barrel and a non-penetrating cam groove portion not penetrating therethrough. The apparatus further includes a first holding member holding a first optical element and moved in an optical axis direction by the guide groove portion and the penetrating cam groove portion with rotation of the cam barrel, a second holding member holding a second optical element and moved in the optical axis direction by the guide groove portion and the non-penetrating cam groove portion with the rotation of the cam barrel, and an adjusting mechanism used for adjusting a position of one of the first and second optical elements relative to that of the other.

Abstract: A camera is provided which includes an image capturing element; a memory for recording images obtained from the image capturing element; and a controller for changing the number of recorded pixels of the images stored in the memory based on information about a lens apparatus that can be operatively connected to the camera.

Abstract: The lens apparatus includes a guide barrel including a guide groove portion penetrating through a circumferential wall of the guide barrel, and a cam barrel disposed rotatably and including a penetrating cam groove portion penetrating through a circumferential wall of the cam barrel and a non-penetrating cam groove portion not penetrating therethrough. The apparatus further includes a first holding member holding a first optical element and moved in an optical axis direction by the guide groove portion and the penetrating cam groove portion with rotation of the cam barrel, a second holding member holding a second optical element and moved in the optical axis direction by the guide groove portion and the non-penetrating cam groove portion with the rotation of the cam barrel, and an adjusting mechanism used for adjusting a position of one of the first and second optical elements relative to that of the other.

Abstract: An optical apparatus includes a zoom optical system including a focusing lens unit, a first cam member that rotates around the optical axis and moves along the optical axis in a magnification-changing operation, the first cam member including a focus cam portion for driving the focusing lens unit, and a speed-changing mechanism that changes the relative rotational speed between the focusing lens unit and the first cam member in accordance with the focal length of the zoom optical system in the magnification-changing operation. The speed-changing mechanism moves along the optical axis in the magnification-changing operation. In addition, the speed-changing mechanism includes a transmission member that is rotatable around the optical axis with respect to the first cam member and that includes a speed-changing cam portion for changing at least one of the rotational speed and the rotational direction of the focusing lens unit.

Abstract: Provided are a lens apparatus and an optical apparatus having the same, the lens apparatus including a lens holding member holding a lens, a supporting member for supporting the lens holding member movably in the direction of the optical axis of the lens, a first drive mechanism for moving the supporting member in the direction of the optical axis, and a second drive mechanism for moving the lens holding member in the direction of the optical axis, wherein a focusing lens can be moved to an in-focus position within a short time and highly accurately by an AF system.

Abstract: A camera system has a recording portion for recording an object image, a display portion for displaying an object image, a first blur correction portion for correcting blur of the object image displayed on the display portion by signal processing, and a second blur correction portion for optically correcting blur of the object image recorded by the recording portion. The camera system includes a controller for switching between a first blur correction mode in which the first blur correction portion is operated, a second blur correction mode in which the second blur correction portion is operated and a third blur correction mode in which both the first blur correction portion and the second blur correction portion are operated.

Abstract: The following lens apparatus is disclosed. That is, a lens apparatus, which forms an optical image by means of an image taking optical system, is detachably mountable to a camera comprising an image pickup device for photoelectric conversion of the optical image, comprising: an optical element, included in the abovementioned image taking optical system and being movable at least in a direction perpendicular to the optical axis; and a control circuit, which controls the driving of the optical element at an amplitude that is in accordance with information about the pixels of the image pickup device that has been acquired from the camera side. The lens apparatus, which can perform optimal control of the optical element even in combination with various digital cameras that respectively differ in the specifications concerning the pixels of the image pickup device, can thus be realized.

Abstract: An optical apparatus includes a zoom optical system including a focusing lens unit, a first cam member that rotates around the optical axis and moves along the optical axis in a magnification-changing operation, the first cam member including a focus cam portion for driving the focusing lens unit, and a speed-changing mechanism that changes the relative rotational speed between the focusing lens unit and the first cam member in accordance with the focal length of the zoom optical system in the magnification-changing operation. The speed-changing mechanism moves along the optical axis in the magnification-changing operation. In addition, the speed-changing mechanism includes a transmission member that is rotatable around the optical axis with respect to the first cam member and that includes a speed-changing cam portion for changing at least one of the rotational speed and the rotational direction of the focusing lens unit.

Abstract: A camera system which is capable of performing highly accurate focusing in a short time by using two kinds of AF methods, is disclosed. The camera system calculates the target driving amount of the focusing lens based on the result of detection by a first focus detection unit, and performs a first driving control to drive the focusing lens toward a position corresponding to the target driving amount and a second driving control to drive the focusing lens based on the result of detection by the second focus detection unit. When the remaining driving amount to the target driving amount of the focusing lens by the first driving control becomes a predetermined amount, the camera system switches from the first driving control to the second driving control without stopping the focusing lens.

Abstract: A camera is provided which includes an image capturing element; a memory for recording images obtained from the image capturing element; and a controller for changing the number of recorded pixels of the images stored in the memory based on information about a lens apparatus that can be operatively connected to the camera.

Abstract: A camera system has a recording portion for recording an object image, a display portion for displaying an object image, a first blur correction portion for correcting blur of the object image displayed on the display portion by signal processing, and a second blur correction portion for optically correcting blur of the object image recorded by the recording portion. The camera system includes a controller for switching between a first blur correction mode in which the first blur correction portion is operated, a second blur correction mode in which the second blur correction portion is operated and a third blur correction mode in which both the first blur correction portion and the second blur correction portion are operated.

Abstract: Provided are a lens apparatus and an optical apparatus having the same, the lens apparatus including a lens holding member holding a lens, a supporting member for supporting the lens holding member movably in the direction of the optical axis of the lens, a first drive mechanism for moving the supporting member in the direction of the optical axis, and a second drive mechanism for moving the lens holding member in the direction of the optical axis, wherein a focusing lens can be moved to an in-focus position within a short time and highly accurately by an AF system.

Abstract: A camera system which controls the driving of a focus lens through overlap control with a high degree of accuracy, is disclosed. The camera system comprises a lens apparatus with an image-taking optical system and a camera on which the lens apparatus is mountable. The camera system comprises a focus detection unit detecting a focusing state of the image-taking optical system, a driving unit driving the focus lens unit, and a controller controlling the driving speed of the focus lens unit and controls the focus detection unit to perform a focus detection operation at least once while the focus lens unit is moved. The controller sets the driving speed of the focus lens unit at the time of at least a final focus detection operation while it is moved toward an in-focus position, to a speed decelerated from the driving speed before the final focus detection operation.

Abstract: A camera system which controls the driving of a focus lens through overlap control with a high degree of accuracy, is disclosed. The camera system comprises a lens apparatus with an image-taking optical system and a camera on which the lens apparatus is mountable. The camera system comprises a focus detection unit detecting a focusing state of the image-taking optical system, a driving unit driving the focus lens unit, and a controller controlling the driving speed of the focus lens unit and controls the focus detection unit to perform a focus detection operation at least once while the focus lens unit is moved. The controller sets the driving speed of the focus lens unit at the time of at least a final focus detection operation while it is moved toward an in-focus position, to a speed decelerated from the driving speed before the final focus detection operation.

Abstract: A camera system which controls the driving of a focus lens through overlap control with a high degree of accuracy, is disclosed. The camera system comprises a lens apparatus with an image-taking optical system and a camera on which the lens apparatus is mountable. The camera system comprises a focus detection unit detecting a focusing state of the image-taking optical system, a driving unit driving the focus lens unit, and a controller controlling the driving speed of the focus lens unit and controls the focus detection unit to perform a focus detection operation at least once while the focus lens unit is moved. The controller sets the driving speed of the focus lens unit at the time of at least a final focus detection operation while it is moved toward an in-focus position, to a speed decelerated from the driving speed before the final focus detection operation.

Abstract: An optical-element holding mechanism includes a first holding member arranged to hold a first optical element, a second holding member arranged to hold a second optical element, a coupling member arranged to couple the first and second holding members with each other and to permit relative positions of the first and second holding members to be varied in process of being coupled, and an urging member disposed between the coupling member and the second holding member and arranged to urge and press the second holding member against the first holding member at least when the coupling member is in process of coupling the first and second holding members.

Abstract: A camera which optimally corrects focus variations caused by stopping down of the stop, is disclosed. The camera comprises a focus detection unit and a controller which controls the driving of the focus lens. The controller drives the focus lens based on the detection result from the focus detection unit when the stop is in a first state. Then, the controller sets the stop in a second state and drives the focus lens based on the detection result from the focus detection unit in the second state.