Optical: systems and elements – Lens – Multiple component lenses
Reexamination Certificate
2006-02-27
2008-03-11
Thompson, Tim (Department: 2873)
Optical: systems and elements
Lens
Multiple component lenses
C359S774000, C359S757000
Reexamination Certificate
active
07342730
ABSTRACT:
A compact zoom lens optical system suitable for use in a camera using a solid state photographing device and providing excellent correction of color aberrations, high zooming ratio, and telecentricity. The zoom lens optical system includes: a first lens group having a positive refractive power, the first lens group including two lenses; a second lens group having a negative refractive power; a third lens group having a positive refractive power; a fourth lens group having a positive refractive power; and a fifth lens group having a positive refractive power. The first through fifth lens groups are sequentially arranged from an object side and the first lens group is moved during zooming from a wide angle position to a telephoto position.
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patent: 6721105 (2004-04-01), Ohtake et al.
patent: 2005/0190447 (2005-09-01), Misaka
patent: 2006/0056055 (2006-03-01), Obama et al.
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patent: 2005-107273 (2005-04-01), None
Drinker Biddle & Reath LLP
Samsung Techwin Co. Ltd.
Thompson Tim
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