Optical: systems and elements – Lens – With variable magnification
Patent
1997-08-27
2000-09-26
Epps, Georgia
Optical: systems and elements
Lens
With variable magnification
359691, 359726, 359727, G02B 1514, G02B 1700
Patent
active
061249866
ABSTRACT:
A zoom optical system and an image pickup apparatus using the same are disclosed. The zoom optical system comprises a first optical unit having a refractive power, the first optical unit having a reflecting surface, a second optical unit having a refractive power, and a driving portion for moving a light receiving surface which receives light from an object through the first optical unit and the second optical unit. The zoom optical system performs variation of magnification by moving at least one of the first optical unit and the second optical unit, and a deviation of a focus position due to the variation of magnification is corrected by the light receiving surface being moved by the driving portion.
REFERENCES:
patent: 3674334 (1972-07-01), Offner
patent: 4265510 (1981-05-01), Cook
patent: 4737021 (1988-04-01), Korsch
patent: 4743103 (1988-05-01), Estelle
patent: 4775217 (1988-10-01), Ellis
patent: 4812030 (1989-03-01), Pinson
patent: 4971428 (1990-11-01), Moskovich
patent: 4993818 (1991-02-01), Cook
patent: 5063586 (1991-11-01), Jewell et al.
patent: 5559629 (1996-09-01), Sheets
patent: 5777804 (1998-07-01), Nakamura
Akiyama Takeshi
Araki Keisuke
Kimura Ken-ichi
Nanba Norihiro
Saruwatari Hiroshi
Canon Kabushiki Kaisha
Epps Georgia
Lucas Michael A
LandOfFree
Zoom optical system and image pickup apparatus 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 optical system and image pickup apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zoom optical system and image pickup apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2105113