Zoom lens barrel

Details Zoom lens barrel Zoom lens barrel

1997-10-27

2000-02-22

Epps, Georgia

Optical: systems and elements

Lens

With variable magnification

357701, G02B 1514

Patent

active

060287187

ABSTRACT:
A zoom lens barrel in which a zoom lens is switched to a plurality of focal lengths by a moving member by which a plurality of lens groups are moved in the direction of optical axis. After a desired focal length has been selected, a focusing operation is conducted by the moving member. At least two lens groups, which are moved for switching focal lengths, are moved while a distance between lens groups is being changed so that the focusing operation can be conducted.

REFERENCES:
patent: 4135786 (1979-01-01), Ikemori
patent: 4275952 (1981-06-01), Uesugi
patent: 4421389 (1983-12-01), Muryoi
patent: 4626076 (1986-12-01), Oshima
patent: 4750821 (1988-06-01), Yamamoto
patent: 4822153 (1989-04-01), Tomori et al.
patent: 4848884 (1989-07-01), Enomoto
patent: 4971427 (1990-11-01), Takamura
patent: 4990945 (1991-02-01), Cho
patent: 5014077 (1991-05-01), Yomogizawa et al.
patent: 5170294 (1992-12-01), Hakaguchi
patent: 5223873 (1993-06-01), Tsuboi
patent: 5233472 (1993-08-01), Haraguchi et al.
patent: 5301066 (1994-04-01), Higuchi
patent: 5333024 (1994-07-01), Labaziewicz
patent: 5416519 (1995-05-01), Ohtake
patent: 5488513 (1996-01-01), Tanaka
patent: 5790901 (1998-08-01), Nakayama et al.
English language abstract of Japanese Patent Publication Open to Public Inspection No. 287833/1988.
English language abstract of Japanese Patent Publication Open to Public Inspection No. 248110/1991.
English language abstract of Japanese Patent Publication Open to Public Inspection No. 259210/1986.

Affiliated with

Also associated with

Rating

Zoom lens barrel does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Zoom lens barrel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zoom lens barrel will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-525335