Zoom lens system

Details Zoom lens system Zoom lens system

2007-05-29

2007-05-29

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S357000, C359S432000, C359S434000, C359S676000

Reexamination Certificate

active

11192778

ABSTRACT:
A zoom lens system is disclosed. The zoom lens system forms a final image of an object and a first intermediate real image between the object and the final image. The zoom lens system includes a first optical unit located between the object and the first intermediate real image. The first optical unit comprises at least one optical subunit which is moved to change the size (magnification) of the first intermediate real image. The zoom lens system also includes a second optical unit located between the first intermediate real image and the final image, at least a portion of which is moved to change the size (magnification) of the final image. The zoom lens system provides a wide zoom range of focal lengths with continuous zooming between the focal lengths.

REFERENCES:
patent: 2454686 (1948-11-01), Back
patent: 3192829 (1965-07-01), Yamaji
patent: 3825315 (1974-07-01), Altman et al.
patent: 3947084 (1976-03-01), Noyes
patent: 3970366 (1976-07-01), Sekiguchi
patent: 4033674 (1977-07-01), Sekiguchi
patent: 4411488 (1983-10-01), Neil et al.
patent: 4676581 (1987-06-01), Roberts
patent: 4909614 (1990-03-01), Itoh et al.
patent: 4971428 (1990-11-01), Moskovich
patent: 5194886 (1993-03-01), Mukai et al.
patent: 5270857 (1993-12-01), Oizumi et al.
patent: 5448411 (1995-09-01), Morooka
patent: 5721641 (1998-02-01), Aoki
patent: 5771123 (1998-06-01), Hamano
patent: 5790309 (1998-08-01), Ohtake
patent: 5835272 (1998-11-01), Kodama
patent: 5999310 (1999-12-01), Shafer et al.
patent: 6157494 (2000-12-01), Nagata
patent: 6362923 (2002-03-01), Lange et al.
patent: 2002014283 (2002-01-01), None
Horne, D.F., “Lens Mechanism Technology” Crane, Russak & Company, Inc., New York, Oct. 1975.
Betensky, Ellis I., “Zoom Lenses II”, Proceedings of SPIE-The International Society for Optical Engineering, SPIE vol. 3129, Jul. 28-29, 1997, pp. 90-96.
Mann, Allen, “Selected Papers on Zoom Lenses”, SPIE Optical Engineering Press, SPIE Milestone Series, vol. MS85, Copyright 1993 (entire book).
Mann, Allen, “Zoom Lenses”, Proceedings, SPIE-The International Society for Optical Engineering, vol. 2539, Jul. 11-12, 1995 (entire volume).
Neil, Iain A. et al., “Zoom Lenses”, Proceedings of SPIE-The International Society for Optical Engineering, vol. 4487, Jul. 31, 2001 (entire volume).

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3784656