Optical: systems and elements – Lens – With variable magnification
Reexamination Certificate
2006-08-01
2006-08-01
Sugarman, Scott J. (Department: 2873)
Optical: systems and elements
Lens
With variable magnification
C359S686000, C359S726000, C359S727000
Reexamination Certificate
active
07085072
ABSTRACT:
An optical path bending optical system includes, in order from the object side, a first lens unit, a second lens unit with negative power, and at least one lens unit with positive power. When the magnification of the optical system is changed in the range from a wide-angle position to a telephoto position, the lens unit with positive power is moved along the optical axis. The first lens unit is constructed with a prism including a reflecting surface for bending the optical path, an entrance surface, and an exit surface, and has negative power. The entrance surface of the prism is configured as a curved surface with negative power which is rotationally symmetrical with respect to the optical axis.
REFERENCES:
patent: 4249798 (1981-02-01), Moskovich
patent: 6728482 (2004-04-01), Hagimori et al.
patent: 6754446 (2004-06-01), Hagimori et al.
patent: 6771432 (2004-08-01), Mihara
patent: 6934095 (2005-08-01), Mihara
patent: 2004/0051960 (2004-03-01), Mihara
patent: 09-211287 (1997-08-01), None
patent: 10-020191 (1998-01-01), None
Kenyon & Kenyon LLP
Sugarman Scott J.
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