Automatic focus camera with interchangeable lens
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorsYasumasa Tomori, Mituhiko Shimoda
Life of this patent
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Abstract
An automatic focus camera with an interchangeable lens, comprising an interchangeable lens barrel having focussing lens means, a camera body having a focus detecting device, the lens barrel having a driving motor for axially moving the focussing lens means in accordance with a detection signal of the focus detecting device, switch circuit means on the camera body for actuating the focus detecting device and the driving motor, and external actuation switches on the lens barrel for actuating the focus detecting device and the driving motor, independently of the actuation of the switch circuit means.
Claims19
An automatic focus camera with an interchangeable lens, comprising an interchangeable lens barrel having focussing lens means movable in directions of the optical axis of the camera, and a camera body having a focus detecting device which detects an image of an object formed by the focussing lens means, said lens barrel having a driving motor for axially moving the focussing lens means in accordance with a detection signal of the focus detecting device, wherein the improvement comprises a switch circuit means on the camera body for actuating the focus detecting device and the driving motor, and an external actuation switch on the lens barrel for actuating the focus detecting device and the driving motor, independently of the actuation of the switch circuit means on the camera body.
An automatic focus camera with an interchangeable lens, comprising an interchangeable lens barrel having focussing lens means movable in directions of the optical axis of the camera, and a camera body having a focus detecting device which detects an image of an object formed by the focussing lens means, said lens barrel having a driving motor for axially moving the focussing lens means in accordance with a detection signal of the focus detecting device, wherein the improvement comprises a switch circuit means on the camera body for actuating the focus detecting device and the driving motor, an external actuation switch on the lens barrel for feeding the supply voltage to the driving motor and a semi-conductor switch circuit on the lens barrel which is operated when the external actuation switch is turned ON to actuating the focus detecting device.
Dependencies are inferred from the claim text.