Optical: systems and elements – Lens – Multiple component lenses
Reexamination Certificate
2006-04-25
2006-04-25
Sugarman, Scott J. (Department: 2873)
Optical: systems and elements
Lens
Multiple component lenses
C359S781000, C359S795000
Reexamination Certificate
active
07035023
ABSTRACT:
This application discloses a lens system comprising in order from an object side to an image side: an aperture stop; a first lens element, having a positive optical power; and a second lens element, having a negative optical power. By setting the shapes of the respective lens elements and the materials making up the respective lens elements so as to meet predetermined conditions in such a lens system, a lens system of a compact size which provides good optical performance is realized while securing telecentric characteristics.
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Higuchi Toshitaka
Ito Daisuke
Nanba Norihiro
Sekita Makoto
Canon Kabushiki Kaisha
Collins Darryl J.
Morgan & Finnegan , LLP
Sugarman Scott J.
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