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US 6,271,974 B1Granted
Lens drive control device and image pickup apparatus having the same
AssigneeCanon Kabushiki Kaisha
InventorFumihito Wachi
Life of this patent
Estimating the term…
Abstract
A lens drive control device includes a zoom lens, a drive mechanism for driving at least one lens unit which constitutes the zoom lens, a control circuit for controlling the drive mechanism, and a switch for switching between a shooting state and a non-shooting state of the zoom lens, wherein, when the zoom lens is switched from the non-shooting state to the shooting state by the switch, the control circuit causes the drive mechanism to drive the zoom lens to a zoom position other than a wide-angle end.
Claims8
An optical appliance, comprising:
- a zoom lens having a first lens unit of negative refractive power located closest to an object side which moves including a locus convex toward an image side during zooming from a wide angle end to a telephoto end;
- an actuator which moves the lens unit of the zoom lens;
- a switch which switches between a retracted state and a non-retracted state of the zoom lens;
- and
- a controller which controls the actuator to move the lens unit of the zoom lens to a position other than the wide angle end when the zoom lens is switched from the retracted state to the non-retracted state by the switch.
2 more elements
An optical appliance, comprising:
- a zoom lens having a plurality of lens units, a lens unit closest to an object side of the plurality of lens units being positioned closest to an image side at a predetermined zoom position other than a wide angle end;
- an actuator which moves the lens unit of the zoom lens;
- a switch which switches between a retracted state and a non-retracted state of the zoom lens;
- and
- a controller which controls the actuator to move the lens unit of the zoom lens to a position other than a wide angle end, when the zoom lens is switched from the retracted state to the non-retracted state by the switch.
2 more elements
Dependencies are inferred from the claim text.