Optical: systems and elements – Lens – With support
Patent
1997-09-05
1999-08-17
Epps, Georgia
Optical: systems and elements
Lens
With support
359601, 359611, G02B 702, G02B 2700, G02B 2100
Patent
active
059402261
ABSTRACT:
A light intercepting mechanism of a zoom lens barrel includes a movable lens frame which holds a frontmost lens group, and a drive ring which is fitted on an outer peripheral surface of the movable lens frame to relatively rotate, so that when the relative rotation of the drive ring occurs, the movable lens frame is moved in the optical axis direction. The movable lens frame has a dual-cylinder structure having a closed front end and an open rear end. The drive ring has a dual-cylinder structure having a closed rear end and an open front end. The movable lens frame having the dual-cylinder structure and the drive ring having the dual-cylinder structure are fitted one inside the each other.
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English language translation of Japanese Laid-Open Publication No. 46-33495 .
Asahi Kogaku Kogyo Kabushiki Kaisha
Epps Georgia
Letendre Suzanne
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