Image pick-up apparatus having rotating shutter blades that move in mutually opposite directions for picking up a static image
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United States of America Patent
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Mar 5, 2013
Grant Date -
Feb 17, 2011
app pub date -
Jul 26, 2010
filing date -
Aug 17, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
An image pick-up apparatus that is capable of correcting shading due to a closing travel operation of a shutter by a simple process. An image pick-up device picks up the image formed. A shutter unit opens and closes a substantially rectangular aperture corresponding to image pick-up area of the image pick-up device by means of a plurality of rotating shutter blades. The shutter blades travel in mutually opposite directions perpendicular to a long side of the aperture while keeping edges of the shutter blades facing the aperture are parallel to the long side so that edge portions that cover a center area of the aperture start shading the aperture before edge portions that cover four corner areas of the aperture start shading the aperture.
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