Zoom lens

Details Zoom lens Zoom lens

2006-08-01

2006-08-01

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S678000, C359S726000

Reexamination Certificate

active

07085071

ABSTRACT:
A zoom lens includes a first lens unit fixed when the magnification of the zoom lens is changed and at least two positive lens units arranged on the image side of the first lens unit so that relative spacings between individual lens units are varied when the magnification is changed. The first lens unit has a prism containing a reflecting surface at the most object-side position, the entrance surface of the prism is configured as a concave surface directed toward the object side, and the concave surface is an aspherical surface that divergence is impaired progressively in separating from the optical axis.

REFERENCES:
patent: 5920428 (1999-07-01), Kim
patent: 5978150 (1999-11-01), Hamanishi et al.
patent: 6124987 (2000-09-01), Kayanuma et al.
patent: 6259564 (2001-07-01), Kamo
patent: 6308011 (2001-10-01), Wachi et al.
patent: 6587281 (2003-07-01), Hozumi et al.
patent: 6754446 (2004-06-01), Hagimori et al.
patent: 2003/0206352 (2003-11-01), Mihara et al.
patent: 09-211287 (1997-08-01), None
patent: 11-194274 (1999-07-01), None
patent: 2004070235 (2004-03-01), None

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