Lens barrel rotation detection apparatus and lens barrel...

Details Lens barrel rotation detection apparatus and lens barrel... Lens barrel rotation detection apparatus and lens barrel...

2008-09-03

2011-10-11

Tran, Nhan T (Department: 2622)

Television

Camera, system and detail

Support or housing

C348S219100, C348S211140

Reexamination Certificate

active

08035733

ABSTRACT:
A lens barrel rotation detection apparatus for detecting a rotational state of a lens barrel to which a lens for image pickup is attached and which is rotated in a horizontal direction or a vertical direction by driving force of a driving section, includes: a single rotatable member rotatable together with rotation of the lens barrel; and three rotation detection section for detecting a rotational state of the rotatable member. The rotatable member has a fixed pattern formed thereon so as to be detected by said rotation detection section and a rotation limit section indicative of limit positions of a range of rotation of the lens barrel. The rotation detection section is disposed for detection of presence or absence of rotation of the rotatable member and the limit positions of the range of rotation.

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patent: 2007-121575 (2007-05-01), None

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