Optical apparatus
First Claim
1. An optical apparatus comprising:
- an optical system provided with a zoom lens for performing zooming by moving along the optical axis and a focus lens for performing correction and focusing at the time of zooming;
an image taking device for image taking an optical image supplied from the optical system;
a zoom actuator for driving the zoom lens;
a focus actuator for driving the focus lens;
a zoom position detecting device for detecting the position of the zoom lens;
a focus position detecting device for detecting the position of the focus lens;
an aperture stop member for driving a plurality of aperture stop vanes and thereby changing an opening diameter and the luminous energy of the optical system;
a filter member for changing the luminous energy passing through the opening diameter integrally set to at least one of the aperture stop vanes;
an aperture stop state detecting device for detecting the opening state of the aperture stop member;
a memory storing the movement information on the relation between the position of the zoom lens for keeping a focused state and the position of the focus lens at the time of zoom movement of the zoom lens; and
a control device for correcting the movement information in accordance with an output of the aperture stop state detecting device and controlling driving of the focus lens.
1 Assignment
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Accused Products
Abstract
An optical apparatus is disclosed which comprises an optical system provided with a zoom lens for performing zooming by moving along the optical axis and a focus lens for performing correction and focusing at the time of zooming, an imaging device for imaging an optical image supplied from the optical system, a zoom actuator for driving the zoom lens, a focus actuator for driving the focus lens, a zoom position detecting device for detecting the position of the zoom lens, a focus position detecting device for detecting the position of the focus lens, an aperture stop member whose opening diameter changes so as to adjust the luminous energy passing through the optical system a filter member to be freely inserted into or extracted from the optical path of the optical system, an aperture stop state detecting device for detecting the opening state of the aperture stop member, a filter state detecting device for detecting the insertion state of the filter member, a memory storing the movement information on the relation between the position of the zoom lens for keeping a focused state and the position of the focus lens, and a control device for correcting the movement information in accordance with an output of the aperture stop state detecting device and an output of the filer state detecting device and controlling driving of the focus lens.
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Citations
18 Claims
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1. An optical apparatus comprising:
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an optical system provided with a zoom lens for performing zooming by moving along the optical axis and a focus lens for performing correction and focusing at the time of zooming;
an image taking device for image taking an optical image supplied from the optical system;
a zoom actuator for driving the zoom lens;
a focus actuator for driving the focus lens;
a zoom position detecting device for detecting the position of the zoom lens;
a focus position detecting device for detecting the position of the focus lens;
an aperture stop member for driving a plurality of aperture stop vanes and thereby changing an opening diameter and the luminous energy of the optical system;
a filter member for changing the luminous energy passing through the opening diameter integrally set to at least one of the aperture stop vanes;
an aperture stop state detecting device for detecting the opening state of the aperture stop member;
a memory storing the movement information on the relation between the position of the zoom lens for keeping a focused state and the position of the focus lens at the time of zoom movement of the zoom lens; and
a control device for correcting the movement information in accordance with an output of the aperture stop state detecting device and controlling driving of the focus lens. - View Dependent Claims (2, 3)
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4. An optical apparatus comprising:
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an optical system provided with a zoom lens for performing zooming by moving along the optical axis and a focus lens for performing correction and focusing at the time of zooming;
an image taking device for image taking an optical image supplied from the optical system;
a zoom actuator for driving the zoom lens;
a focus actuator for driving the focus lens;
a zoom position detecting device for detecting the position of the zoom lens;
a focus position detecting device for detecting the position of the focus lens;
an aperture stop member whose opening diameter changes so as to adjust the luminous energy passing through the optical system;
a filter member to be freely inserted into or extracted from the optical path of the optical system;
an aperture stop state detecting device for detecting the opening state of the aperture stop member;
a filter state detecting device for detecting the insertion state of the filter member;
a memory storing the movement information on the relation between the position of the zoom lens for keeping a focused state and the position of the focus lens at the time of zoom movement of the zoom lens; and
a control device for correcting the movement information in accordance with an output of the aperture state detecting device and an output of the filter state detecting device and driving the focus lens. - View Dependent Claims (5, 6, 7, 8, 9)
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10. An optical apparatus comprising:
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an optical system provided with a focus lens;
an image taking device for image taking an optical image supplied from the optical system;
a focus actuator for driving the focus lens;
a focus position detecting device for detecting the position of the focus lens;
an aperture stop member for driving a plurality of aperture stop vanes and thereby changing an opening diameter and the luminous energy of the optical system;
a filter member for changing the luminous energy passing through the opening diameter integrally set to at least one of the aperture stop vanes;
an aperture stop state detecting device for detecting the opening state of the aperture stop member; and
a control device for controlling driving of the focus lens so as to correct the position of the focus lens in accordance with an output of the aperture stop state detecting device. - View Dependent Claims (11, 12)
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13. An optical apparatus comprising:
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an optical system provided with a focus lens;
an image taking device for image taking an optical image supplied from the optical system;
a focus actuator for driving the focus lens;
a focus position detecting device for detecting the position of the focus lens;
an aperture stop member whose opening diameter changes so as to adjust the luminous energy passing through the optical system;
a filter member to be freely inserted or extracted into or from the optical path of the optical system so that the insertion state of the member is continuously changed to the optical path;
an aperture stop state detecting device for detecting the opening state of the aperture stop member; and
a filter state detecting device for detecting the insertion state of the filter member;
a control device for controlling driving of the focus lens so as to correct the position of the focus lens in accordance with an output of the aperture stop state detecting device and an output of the filter state detecting device. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification