Lens barrel incorporating a one-way rotational transfer...

Details Lens barrel incorporating a one-way rotational transfer... Lens barrel incorporating a one-way rotational transfer...

2006-08-29

2006-08-29

Perkey, W B (Department: 2851)

Photography

With exposure objective focusing means, focusing aid, or...

Mechanical mechanism for displacement of exposure objective

C396S072000, C396S079000, C359S694000, C359S696000, C359S823000, C192S032000

Reexamination Certificate

active

07099576

ABSTRACT:
A lens barrel includes a distance adjustment ring for moving a movable lens group; a hand-operated ring and a motor for rotating the distance adjustment ring; a one-way rotational transfer mechanism which transfers torque of the hand-operated ring to the distance adjustment ring when the hand-operated ring is manually rotated, and prevents torque of the distance adjustment ring transferring to the hand-operated ring when the distance adjustment ring is rotated by the motor. A circumferentially-uneven-width-space forming portion formed on an annular overlapping portion of the hand-operated ring, is shaped so that a torque transfer member, installed in an accommodation space between the annular overlapping portion and-a torque transfer cylindrical surface on the distance adjustment ring, wedges between the circumferentially-uneven-width-space forming portion and the torque transfer cylindrical surface to transfer the torque of the manually rotated hand-operated ring to the distance adjustment ring.

REFERENCES:
patent: 5052781 (1991-10-01), Iizuka
patent: 5239417 (1993-08-01), Eguchi et al.
patent: 5915514 (1999-06-01), Nojiri et al.
patent: 6788890 (2004-09-01), Suzuki
patent: 6827190 (2004-12-01), Hamasaki
patent: 6879445 (2005-04-01), Hamasaki
patent: 2005/0115358 (2005-06-01), Hamasaki et al.
patent: 2-253210 (1990-10-01), None
patent: 2-253214 (1990-10-01), None
patent: 11-23939 (1999-01-01), None
patent: 11-202181 (1999-07-01), None
U.S. Appl. No. 10/952,727 to Hamasaki et al., filed Sep. 30, 2004.
U.S. Appl. No. 10/971,118 to Iikawa et al., filed Oct. 25, 2004.

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