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US 5,327,184 AGranted
Zoom lens barrel with focal length detector
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorsHiroshi Nomura, Norio Sato, Nobuaki Aoki
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AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorsHiroshi Nomura, Norio Sato, Nobuaki Aoki
Estimating the term…
A zoom lens barrel includes a code plate and brushes which selectively come into contact with the code plate to detect focal length variance during zooming, so that focal length data thus detected can be transmitted to a camera body through a flexible printed circuit (FPC) board, one of the code plate land brushes being secured to a mounting member and the other of the brushes or code plate being secured to a linearly movable member. The brushes are provided with elastically deformable lengths which can be connected to the FPC board, and a connecting portion thereof connected to the code plate. The mounting member or linearly movable member to which the brush assembly is secured is provided with an FPC board inserting groove with which the elastically deformable legs of the brushes can come into contact. The FPC board is provided with an insertion portion which is inserted between the FPC board inserting groove and the elastically deformable legs.
A zoom lens barrel comprising a code plate and a brush assembly which selectively comes into contact with the code plate to detect focal length variance during zooming, so that focal length data thus detected can be transmitted to a camera body through a flexible printed circuit (FPC) board, one of the code plate and brush assembly being secured to a mounting member and the other of the brush assembly or code plate being secured to a linearly movable member, said linearly movable member being movable with respect to said mounting member, wherein
A zoom lens barrel comprising a code plate and brushes which selectively come into contact with the code plate to detect focal length variance during zooming, so that focal length data thus detected can be transmitted to a camera body through a flexible printed circuit (FPC) board, one of the code plate and brushes being secured to a mounting member and the other of the brushes or code plate being secured to a linearly movable member which is linearly moved in an optical axis direction with respect to said mounting member during zooming, comprising:
A zoom lens barrel comprising a code plate and brushes having elastically deformable free ends which selectively come into contact with the code plate to detect focal length variance during zooming, one of the code plate and brushes being secured to a mounting member and the other of the brushes or code plate being secured to a linearly movable member, said linearly movable member being movable with respect to said mounting member, comprising:
Dependencies are inferred from the claim text.