Patent application number | Description | Published |
20100014171 | LENS BARREL AND IMAGE PICKUP APPARATUS - An image pickup apparatus enabling construction of a small bending optical system with high magnification. A first lens group is movably disposed toward an object on a first optical axis. A second lens group is movably disposed radially inward of the first lens group. The second lens group comprises a drive frame drivingly controlled along the first optical axis and a lens holding frame for holding the second lens group. A prism is disposed on the first optical axis, for bending light incident on the prism to thereby guide the light along a second optical axis. The prism is retracted along the second optical axis in a non-shooting state. In the non-shooting state, the second lens group is retracted and accommodated in a space defined by the drive frame and the lens holding frame and a space occupied by the prism in a shooting state. | 01-21-2010 |
20100141827 | OPTICAL ELEMENT DRIVE MECHANISM AND IMAGE PICKUP APPARATUS HAVING THE SAME - An image pickup apparatus including a lens barrel with a bending optical system, in which a reflection optical element is movable between a storage state and a photographing state. When a rotary cylinder that retains a lens group to which light beams from an object are incident is being driven by a drive source to advance and retreat between a storage state and a photographing state, the coupling between a cam mechanism for rotary cylinder operation and a driving force transmission gear train for optical element operation is automatically established and released, whereby the operation for moving the reflection optical element between the storage state and the photographing state can be achieved by a single drive source. | 06-10-2010 |
20100290135 | OPTICAL ELEMENT POSITIONING APPARATUS - An optical element positioning apparatus capable of moving an optical element from a storage state to a use state and improving the accuracy of positioning the optical element to a use position on an optical path. A holding member that holds the optical element is guided by guide shafts to be movable between the storage state and the use state. The holding member is provided with guide-supporting and receiving portions through which the guide shafts are slidably inserted. The guide shafts are supported by holding portions. A degree of freedom in positioning the holding member at the use position is provided. Holding-member positioning parts of the guide-supporting and receiving portions are pressed by an urging device against ends of the holding portions, whereby the holding member is positioned and held at the use position. | 11-18-2010 |
20110109981 | LENS BARREL AND IMAGE PICKUP APPARATUS - An image pickup apparatus enabling construction of a small bending optical system with high magnification. A first lens group is movably disposed toward an object on a first optical axis. A second lens group is movably disposed radially inward of the first lens group. The second lens group comprises a drive frame drivingly controlled along the first optical axis and a lens holding frame for holding the second lens group. A prism is disposed on the first optical axis, for bending light incident on the prism to thereby guide the light along a second optical axis. The prism is retracted along the second optical axis in a non-shooting state. In the non-shooting state, the second lens group is retracted and accommodated in a space defined by the drive frame and the lens holding frame and a space occupied by the prism in a shooting state. | 05-12-2011 |
20130076969 | OPTICAL ELEMENT DRIVE MECHANISM AND IMAGE PICKUP APPARATUS HAVING THE SAME - An image pickup apparatus including a lens barrel with a bending optical system, in which a reflection optical element is movable between a storage state and a photographing state. When a rotary cylinder that retains a lens group to which light beams from an object are incident is being driven by a drive source to advance and retreat between a storage state and a photographing state, the coupling between a cam mechanism for rotary cylinder operation and a driving force transmission gear train for optical element operation is automatically established and released, whereby the operation for moving the reflection optical element between the storage state and the photographing state can be achieved by a single drive source. | 03-28-2013 |
20130163107 | OPTICAL BARREL AND OPTICAL APPARATUS - The optical barrel includes a first barrel member having a guiding portion to guide an optical element holding member in an optical axis direction, and a second barrel member disposed around the first barrel member and being relatively rotatable with the first barrel member. The second barrel member is provided with a cam portion to move the holding member, and with a bayonet engagement portion in an outer circumferential portion of the second barrel member. The first barrel member is provided with a flange portion, and with overhang portions and bayonet protrusion portions in plural areas of the flange portion. Each overhang portion extends along an outer circumferential surface of the second barrel member in the optical axis direction. Each bayonet protrusion portion extends inward in the radial direction and engaging with the bayonet engagement portion. | 06-27-2013 |
20140285066 | LINEAR ULTRASONIC MOTOR AND OPTICAL APPARATUS INCLUDING THE SAME - A small linear ultrasonic motor includes: a vibration element generating ultrasonic vibrations by applying high frequency drive voltage; a slider against which vibration element is pressed and which is relatively moved by the ultrasonic vibrations; a vibration element supporting member retaining the vibration element and relatively moving with respect to the slider; a guide portion guiding a moving direction of the relative movement of the vibration element supporting member; and a pressurizing portion pressing the vibration element against the slider, wherein the guide portion is arranged sandwiching a position at which the vibration element is pressed against the slider, in a plane that includes the moving direction and intersects with a pressurizing direction of a pressurizing force exerted by the pressurizing portion, and at least each part of the pressurizing portion and the guide portion is disposed at a position equidistant from the plane in the pressurizing direction. | 09-25-2014 |
20150137663 | VIBRATION ACTUATOR - A vibration actuator includes a vibrator including an electromechanical transducer and an elastic body, a vibrator fixing member configured to hold the vibrator, a driven member configured to come into frictional contact with the vibrator so as to move relative to the vibrator, a pressing portion configured to press the vibrator against the driven member, a guide portion configured to guide the vibrator in a direction in which the vibrator moves, and a vibration damping member disposed between the vibrator fixing member and the movable plate. The guide portion includes a movable plate configured to move integrally with the vibrator, a rolling member configured to roll in the direction in which the vibrator moves, and a press-and-hold member configured to press the rolling member against the movable plate. | 05-21-2015 |