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US 6,389,238 B1Granted
Lens barrel
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorHiroaki Suzuki
Life of this patent
Estimating the term…
Abstract
A lens barrel includes an outer barrel including a lens-hood mount portion at the front end of the outer barrel, a lens hood being detachably attached to the lens-hood mount portion; an inner barrel including a filter mount portion at the front end of the inner barrel and positioned inside the outer barrel to be rotatable about an optical axis relative to the outer barrel; and a manually rotatable structure adopted to rotate the inner barrel from the outside of the outer barrel.
Claims27
A lens barrel comprising:
- an outer barrel comprising a lens-hood mount portion at the front end of said outer barrel, a lens hood being detachably attached to said lens-hood mount portion;
- an inner barrel comprising a filter mount portion at the front end of said inner barrel, said inner barrel being positioned inside said outer barrel to be rotatable about an optical axis relative to said outer barrel;
- and
- a manual rotation structure adapted to rotate said inner barrel from the outside of said outer barrel.
1 more element
A lens barrel comprising:
- an outer barrel to which a lens hood is detachably attached at the front end thereof;
- a rotatable barrel comprising a filter mount portion at the front end thereof, said rotatable barrel being positioned inside said outer barrel to be rotatable about an optical axis relative to said outer barrel;
- and
- an operational opening formed on said outer barrel to radially expose part of an outer peripheral surface of said rotatable barrel through said operational opening, so that rotating force is applied to the rotatable barrel through said opening by a user.
1 more element
Dependencies are inferred from the claim text.