Image pickup apparatus with removable ND filter

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United States of America Patent

PATENT NO 8922698
SERIAL NO

13445994

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Abstract

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An image pickup apparatus includes: a lens apparatus; and a camera apparatus that can be attached and removed from the lens apparatus, wherein the camera apparatus includes: an image pickup element; and an optical element configured to be inserted and removed from an optical path, the optical element is a ND filter, and the ND it has a surface with positive refractive power. A ratio of a thickness of the optical element on an optical axis and a thickness of the optical length adjustment unit on the optical axis is appropriately set.

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Patent Owner(s)

  • CANON KABUSHIKI KAISHA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Iriyama, Yutaka Utsunomiya, JP 12 40
Ohmuro, Ryuji Utsunomiya, JP 16 172
Takemoto, Shoichi Utsunomiya, JP 33 146

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