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AssigneeCanon Kabushiki Kaisha
InventorTakuji Umezu
Estimating the term…
An image shake correction apparatus includes a first fixing member; a movable member configured to correct the image shake, and configured to hold an optical element; a plurality of spherical members that are movable; a biasing member configured to apply a biasing force through the spherical member in the optical axis direction; a second fixing member that is disposed on the opposite side of the optical axis direction; and a plurality of damping members disposed in the second fixing member that suppresses vibration resulting from movement of the movable member. Either one of the first fixing member or the movable member includes a contact surface configured to make contact with the spherical member, and the maximum movable range of the contact surface overlaps with at least a portion of the installation region of the damping member in the optical axis direction.
An image vibration correction apparatus, the apparatus comprising:
An optical device including an optical system configured from a plurality of optical elements, wherein the optical system includes an image vibration correction apparatus, wherein the image vibration correction apparatus comprising:
An image vibration correction apparatus, the apparatus comprising:
An optical device including an optical system configured from a plurality of optical elements, wherein the optical system includes an image vibration correction apparatus, wherein the image vibration correction apparatus comprising:
Dependencies are inferred from the claim text.
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Imaging systems using optical elements for stabilisation of the lateral and angular position of the image: compensating for small deviations, e.g.…
By relative axial movement of several lenses, e.g. of varifocal objective lens: controlled by a microcomputer
Motion detection: based on additional sensors, e.g. acceleration sensors
Vibration or motion blur correction: performed by mechanical compensation
About 6 years 11 months of term left · ends 3 Oct 2033 (estimated)
Field of the Invention
The present disclosure relates to an image shake correction apparatus, and to an optical device using the same.
Description of the Related Art
FIG. 1 illustrates the external appearance of an optical device that includes an image shake correction apparatus according to an embodiment.
FIG. 2 illustrates an optical system, and a control system configured to control the respective constituent elements of the optical system.
FIGS. 3A and 3B illustrate a perspective view of the external appearance of the image shake correction apparatus according to the embodiment.
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
Firstly, an optical device that applies the image shake correction apparatus according to an embodiment of the present disclosure will be described. The image shake correction apparatus according to the present embodiment can be mounted on an optical device such as a conversion lens unit or imaging apparatus such as a video camera, digital still camera, or the like. In the following description of the present embodiment, an example will be described of a video camera which is integrally formed with a lens barrel in which the image shake correction apparatus is included in an inner portion of the lens barrel. In the following figures, the Z axis is taken to be the direction with respect to the imaged body in the optical axis direction of the lens barrel, the Y axis is the direction (pitch direction) perpendicular to a plane that is vertically configured relative to the Z axis, and the X axis is the horizontal direction (yaw direction). FIG. 1 is a perspective view that illustrates the external appearance of a video camera 1 that applies an image shake correction apparatus according to the present embodiment. The video camera 1 includes a camera main body 2 and a lens barrel 3 that is integrally connected with the camera main body 2.
FIG. 2 illustrates an optical system that is configured from a plurality of optical elements (optical element group) included in the lens barrel 3, and a control system contained in the camera main body 2, and configured to control the operation of the respective constituent elements of the lens barrel 3. Firstly, in sequence from the imaged body (direction of light incidence), the optical system contained in the lens barrel 3 includes a first lens group L1, a second lens group L2, an optical amount adjustment unit 4, a shift lens (third lens group) L3, and a fourth lens group L4. For example, the optical system can adjust the zoom (magnification) or focus (focusing), or the like. An imaging element 5 is provided on the image plane side (light emission side) of the lens barrel 3 (optical system) in an inner portion of the camera main body 2. The imaging element 5 executes photoelectric conversion of the image of the imaged body that is formed by the respective lenses L1 to L4 of the first to fourth groups. A CCD image sensor for example may be adopted as the imaging element 5. The imaging element 5 may also be configured as another type of imaging element such as a CMOS image sensor, or the like. The image shake correction apparatus according to the present embodiment that includes a shift lens L3 will be described below. Thereafter, the control system related to the image shake correction apparatus will be described.