Optical: systems and elements – Lens – With variable magnification
Reexamination Certificate
2005-02-08
2005-02-08
Sugarman, Scott J. (Department: 2873)
Optical: systems and elements
Lens
With variable magnification
C359S694000, C359S695000, C359S699000, C359S823000
Reexamination Certificate
active
06853503
ABSTRACT:
An eccentricity-prevention mechanism includes a pair of lens-supporting rings for supporting a pair of lens groups, respectively; and a pair of positioning recesses and a follower projection formed on one and the other of opposed surfaces of the pair of lens-supporting rings, such that the follower projection engages with one of the pair of positioning recess to define a relative position of the pair of lens-supporting rings with respect to the optical axis, at a mutually close position and at a mutually distant position. At least three pairs of the positioning recesses and at least three follower projections are provided at different positions in a circumferential direction, so that eccentricity between the pair of lens-supporting rings is eliminated when all of the follower projections are concurrently brought into engagement with corresponding positioning recesses.
REFERENCES:
patent: 4227792 (1980-10-01), Rentschler
patent: 4390262 (1983-06-01), Hirohata et al.
patent: 4416527 (1983-11-01), Okura
patent: 4426145 (1984-01-01), Hashimoto
patent: 4484800 (1984-11-01), Tamura
patent: 4576446 (1986-03-01), Kamata
patent: 4595081 (1986-06-01), Parsons
patent: 4662241 (1987-05-01), Edwards
patent: 4834514 (1989-05-01), Atsuta et al.
patent: 4839680 (1989-06-01), Amada et al.
patent: 4917482 (1990-04-01), Ito
patent: 4918480 (1990-04-01), Hori
patent: 4922274 (1990-05-01), Yamamoto et al.
patent: 4971427 (1990-11-01), Takamura et al.
patent: 4975725 (1990-12-01), Morisawa
patent: 4978204 (1990-12-01), Ito
patent: 4984877 (1991-01-01), Ito
patent: 4993815 (1991-02-01), Yamazaki et al.
patent: 5037187 (1991-08-01), Oda et al.
patent: 5126883 (1992-06-01), Sato et al.
patent: 5144352 (1992-09-01), Shono
patent: 5166829 (1992-11-01), Iizuka
patent: 5177638 (1993-01-01), Emura et al.
patent: 5196963 (1993-03-01), Sato et al.
patent: 5222407 (1993-06-01), Sekiguchi
patent: 5237357 (1993-08-01), Morisawa
patent: 5241422 (1993-08-01), Shimada et al.
patent: 5268794 (1993-12-01), Chan
patent: 5301066 (1994-04-01), Higuchi et al.
patent: 5313244 (1994-05-01), Arai
patent: 5461443 (1995-10-01), Nakayama et al.
patent: 5559571 (1996-09-01), Miyamoto et al.
patent: 5572276 (1996-11-01), Hirakawa
patent: 5589987 (1996-12-01), Tanaka
patent: 5646790 (1997-07-01), Kohmoto et al.
patent: 5671449 (1997-09-01), Shimizu
patent: 5701208 (1997-12-01), Sato et al.
patent: 5708533 (1998-01-01), Hamasaki
patent: 5739962 (1998-04-01), Asakura et al.
patent: 5774266 (1998-06-01), Otani et al.
patent: 5774748 (1998-06-01), Ito et al.
patent: 5812889 (1998-09-01), Nomura et al.
patent: 5842057 (1998-11-01), Nomura et al.
patent: 5870232 (1999-02-01), Tsuji et al.
patent: 5892998 (1999-04-01), Kodaira et al.
patent: 5933285 (1999-08-01), Sato et al.
patent: 6028714 (2000-02-01), Koyama
patent: 6069745 (2000-05-01), Fujii et al.
patent: 6089760 (2000-07-01), Terada
patent: 6118666 (2000-09-01), Aoki et al.
patent: 6125237 (2000-09-01), Park
patent: 6160670 (2000-12-01), Nakayama et al.
patent: 6176627 (2001-01-01), Suh
patent: 6195211 (2001-02-01), Iwasaki
patent: 6522478 (2002-02-01), Nomura et al.
patent: 6522481 (2002-02-01), Nomura et al.
patent: 6369955 (2002-04-01), Enomoto et al.
patent: 6424469 (2002-07-01), Hirai
patent: 6429979 (2002-08-01), Enomoto
patent: 6437922 (2002-08-01), Enomoto et al.
patent: 6437924 (2002-08-01), Azegami
patent: 6456442 (2002-09-01), Enomoto
patent: 6456445 (2002-09-01), Nomura et al.
patent: 6469840 (2002-10-01), Nomura et al.
patent: 6469841 (2002-10-01), Nomura et al.
patent: 6493511 (2002-12-01), Sato
patent: 6512638 (2003-01-01), Sato et al.
patent: 6522482 (2003-02-01), Nomura et al.
patent: 20020012178 (2002-01-01), Noguchi
patent: 20020036836 (2002-03-01), Hagimori
patent: 4-340907 (1992-11-01), None
patent: 8-146296 (1996-06-01), None
patent: 2000275518 (2000-10-01), None
English Language Abstract of JP 2000-275518, Jun. 10, 2000.
English Language Abstract of JP 8-146296, Jul. 6, 1996.
English Language Abstract of JP 4-340907.
Ishizuka Kazunori
Nomura Hiroshi
Sasaki Takamitsu
Takashima Maiko
Greenblum & Bernstein P.L.C.
Hasan M.
PENTAX Corporation
Sugarman Scott J.
LandOfFree
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