Optical: systems and elements – Lens – With variable magnification
Reexamination Certificate
2009-02-23
2010-11-16
Spector, David N (Department: 2873)
Optical: systems and elements
Lens
With variable magnification
C359S687000, C359S694000
Reexamination Certificate
active
07835086
ABSTRACT:
The positioning of the first through the third lenses in the optical axis direction is performed in the state that the optical axes are aligned by press-fitting the outer circumference surfaces of the first through the third lenses of the second lens group respectively to the first through the third lens holding portions of the lens frame and the state that the first reference plane of the first lens and the second reference plane of the second lens are contacted and the third reference plane of the second lens and the fourth reference plane of the third lens are contacted.
REFERENCES:
patent: RE39899 (2007-10-01), Miyauchi
patent: 2004/0136086 (2004-07-01), Ohtake
patent: 2005/0243437 (2005-11-01), Hozumi et al.
patent: 2004-212616 (2004-07-01), None
patent: 2006-23529 (2006-01-01), None
patent: 2007-93934 (2007-04-01), None
Miyasaka So
Sakuraba Hiromitsu
Sutoh Hisashi
Watanabe Kazuya
Yamano Hiroki
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Sony Corporation
Spector David N
Tamron Co., Ltd.
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