Optical: systems and elements – Lens – With variable magnification
Patent
1996-02-26
2000-02-01
Epps, Georgia
Optical: systems and elements
Lens
With variable magnification
359678, 359631, 359729, 359731, 359366, 359431, G02B 1514, G02B 2714, G02B 1700, G02B 2300
Patent
active
060210044
ABSTRACT:
A zoom lens comprises a plurality of optical elements each of which includes a transparent body having two refracting surfaces and a plurality of reflecting surfaces and is arranged so that a light beam enters the transparent body from one of the two refracting surfaces, repeatedly undergoes reflection, and exits from the other of the two refracting surfaces, and/or a plurality of optical elements on each of which a plurality of reflecting surfaces made from front surface mirrors are integrally formed, and each of which is arranged so that an entering light beam repeatedly undergoes reflection by the plurality of reflecting surfaces and exits from the optical element. In the zoom lens, the optical element which the light beam from an object enters first has an entrance pupil positioned on an object side of a first reflecting surface, and an image of the object is formed via the plurality of optical elements and zooming is performed by causing at least two optical elements from among the plurality of optical elements to vary their relative positions.
REFERENCES:
patent: 3674334 (1972-07-01), Offner
patent: 3741622 (1973-06-01), Cox
patent: 4265510 (1981-05-01), Cook
patent: 4407567 (1983-10-01), Michelet et al.
patent: 4737021 (1988-04-01), Korsch
patent: 4775217 (1988-10-01), Ellis
patent: 4812030 (1989-03-01), Pinson
patent: 4993818 (1991-02-01), Cook
patent: 5063586 (1991-11-01), Jewell et al.
patent: 5453877 (1995-09-01), Gerbe et al.
patent: 5594588 (1997-01-01), Togino
patent: 5663833 (1997-09-01), Nanba et al.
patent: 5687025 (1997-11-01), Nanba
patent: 5699194 (1997-12-01), Takahashi
patent: 5701202 (1997-12-01), Takahashi
patent: 5726807 (1998-03-01), Nakaoka et al.
patent: 5734505 (1998-03-01), Togino et al.
patent: 5917662 (1999-06-01), Sekita
Akiyama Takeshi
Araki Keisuke
Kimura Ken-ichi
Kurihashi Toshiya
Nanba Norihiro
Canon Kabushiki Kaisha
Epps Georgia
Lester Evelyn A.
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