Still image pickup apparatus with shortened exposure time
AssigneeCanon Kabushiki Kaisha
InventorMakoto Kondo
Life of this patent
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Abstract
In a still image pickup apparatus of the kind arranged to start an exposure by causing an image sensor to begin an accumulating action and to end the exposure by using a light-shielding member having a poor responsivity, the exposure time is arranged to be controlled by allowing the accumulating action of the image sensor to begin after the light-shielding member starts the light-shielding action for terminating the exposure time. This arrangement enables the apparatus to perform a high-speed shutter operation irrespectively of the responsivity of the light-shielding member.
Claims13
An image pickup apparatus comprising:
- (a) image pickup means for producing an electrical signal based on an optical image;
- (b) shutter means for shielding said image pickup means from said optical image;
- and
- (c) control means for controlling and causing said image pickup means to start producing the electrical signal after controlling and causing said shutter means to start shielding said image pickup means.
An image pickup apparatus comprising:
- (a) image pickup means for producing an electrical signal based on an optical image;
- (b) shutter means for shielding said image pickup means from said optical image;
- and
- (c) control means for resetting said image pickup means after starting shielding said image pickup means by operating said shutter means.
Dependencies are inferred from the claim text.