Back to results
US RE33,185 EGranted
Camera with autofocusing device
AssigneeCanon Kabushiki Kaisha
InventorsMutsuhide Matsuda, Shuichi Tamura, Hideo Tamamura
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeCanon Kabushiki Kaisha
InventorsMutsuhide Matsuda, Shuichi Tamura, Hideo Tamamura
Estimating the term…
A camera comprises an exposure meter having a pointer deflected to a position dependent upon the brightness level of an object to be photographed, a scanning mechanism actuated by a camera release to scan the position of the deflected pointer with the scanning result being introduced to a lens aperture mechanism, an automatic focus adjusting device actuated by the camera release to control the focusing of an objective lens in accordance with a photoelectrically sensed distance from the camera to the object, and a control mechanism. Since the photoelectric elements in measuring the object distance have a relatively long time lag, the control mechanism functions upon actuation of the camera release to defer the actuation of the scanning mechanism and the autofocusing device, pending completion of the detection of the object distance. In this manner, an exposure setting accurately corresponding to the prevailing lighting conditions is obtained. When the light value is too low to assure the satisfactory operation of the automatic focus adjusting device, the camera may be switched to the flash mode where the objective lens and the aperture mechanism are automatically set in a pan-focus condition in response to actuation of the camera release.
In a camera having an automatic focus adjusting device and an automatic exposure control device, the combination comprises:
In a camera which is selectively settable to a daylight photography mode and to a flash photography mode and which includes an objective and a manually operable selector for selection of the photographic modes, an automatic focus adjusting device comprising:
An automatic focusing camera which is selectively settable to a daylight photography mode and to a flash photography mode, comprising:
A camera which is selectively settable to a daylight mode and to a flash-light mode, comprising:
A camera which is selectively settable to a daylight mode and to a flash-light mode, comprising:
A camera which is selectively settable to a daylight mode and to a flash-light mode, comprising:
A camera according to claim 18, wherein the predetermined position is a position where said lens means focuses on the object at a predetermined distance within the maximum permissible distance for the flash-light mode.
Dependencies are inferred from the claim text.