Lens barrel and image pickup apparatus

Details Lens barrel and image pickup apparatus Lens barrel and image pickup apparatus

2011-05-17

2011-05-17

Mack, Ricky L (Department: 2873)

Optical: systems and elements

Lens

With support

Reexamination Certificate

active

07944635

ABSTRACT:
A lens barrel includes a shooting optical system contained in a barrel and operable to lead a subject image to an image sensor, a back focus adjustment lens group constituting a part of the shooting optical system and operable to be fixed immovably after the position of the back focus adjustment lens group is adjusted in an optical axis direction of the shooting optical system, and a back focus adjustment mechanism operable to adjust the position of the back focus adjustment lens group in the optical axis direction.

REFERENCES:
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patent: 5408285 (1995-04-01), Azegami et al.
patent: 5594517 (1997-01-01), Tsunefuji
patent: 6654187 (2003-11-01), Ning
patent: 7215483 (2007-05-01), Sekita
patent: 7254322 (2007-08-01), Kusaka
patent: 7468753 (2008-12-01), Butterworth et al.
patent: 11-133291 (1999-05-01), None
patent: 2002-303776 (2002-10-01), None
patent: 2004-085603 (2004-03-01), None
patent: WO-2004/107007 (2004-12-01), None
Japanese Office Action issued Apr. 9, 2009 for corresponding Japanese Application No. 2007-212772.

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