Imaging device with erroneous shake correction prevention due to front curtain shock
First Claim
1. An imaging apparatus which includes an imaging device having a plurality of pixels arrayed in a matrix, comprising:
- shake detection means for detecting an amount of shake applied to the imaging device;
shake correction means for performing a shake correction drive of a predetermined structure on the basis of a shake amount detection signal from the shake detection means;
a mechanical focal plane shutter including a curtain that moves in a direction substantially orthogonal to a predetermined pixel line of the imaging device, the mechanical focal plane shutter being configured to perform an optical-path opening operation and an optical-path blocking operation for opening and blocking an optical path of light guided to the imaging device;
timing signal generating means for supplying a predetermined reset signal to each of the pixels on the pixel line basis so as to start exposure on the imaging device; and
control means for controlling exposure of the imaging device,wherein the control means is capable of executing a first exposure start control for starting exposure on the imaging device by the optical-path opening operation by the mechanical focal plane shutter, and a second exposure start control for starting exposure on the imaging device by the reset signal supplied to each of the pixels from the timing signal generating means, the second exposure start control being selected in a shake-correction execution mode during which a shake correction operation by the shake correction means is actually performed.
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Accused Products
Abstract
In an imaging apparatus, an erroneous shake correction is prevented from being performed due to a front curtain shock. A shutter selecting section determines a current state is a shake-correction execution mode when a shake correction switch is ON, when a tripod detection sensor tripod is not mounted, when a shake detection sensor senses a shake amount equal to or larger than a predetermined value, and when a shutter speed is lower than a predetermined value. In this case, the shutter selecting section selects an electronic focal plane shutter as the front curtain, and supplies an operation command signal to an electronic focal plane shutter control section. In other cases, the shutter selecting section determines the current state is not the shake-correction execution mode, and selects a mechanical focal plane shutter as the front curtain and supplies an operation command signal to a shutter drive control section.
16 Citations
21 Claims
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1. An imaging apparatus which includes an imaging device having a plurality of pixels arrayed in a matrix, comprising:
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shake detection means for detecting an amount of shake applied to the imaging device; shake correction means for performing a shake correction drive of a predetermined structure on the basis of a shake amount detection signal from the shake detection means; a mechanical focal plane shutter including a curtain that moves in a direction substantially orthogonal to a predetermined pixel line of the imaging device, the mechanical focal plane shutter being configured to perform an optical-path opening operation and an optical-path blocking operation for opening and blocking an optical path of light guided to the imaging device; timing signal generating means for supplying a predetermined reset signal to each of the pixels on the pixel line basis so as to start exposure on the imaging device; and control means for controlling exposure of the imaging device, wherein the control means is capable of executing a first exposure start control for starting exposure on the imaging device by the optical-path opening operation by the mechanical focal plane shutter, and a second exposure start control for starting exposure on the imaging device by the reset signal supplied to each of the pixels from the timing signal generating means, the second exposure start control being selected in a shake-correction execution mode during which a shake correction operation by the shake correction means is actually performed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification