Optical: systems and elements – Light control by opaque element or medium movable in or... – With rotating or pivoting element
Reexamination Certificate
2011-06-21
2011-06-21
Allen, Stephone B (Department: 2872)
Optical: systems and elements
Light control by opaque element or medium movable in or...
With rotating or pivoting element
Reexamination Certificate
active
07965432
ABSTRACT:
A light quantity control device includes: a bottom board having an opening; a first blade and second blade linearly moving in opposing directions and changing in an opening area of the opening; a supporting blade overlapping the first blade and closing the opening in cooperation with the first blade and second blade; and a driving lever connected to the first blade, the second blade, and supporting blade, and driving the first blade, second blade, and the supporting blade by rotation of the driving lever. The first blade and supporting blade are engaged with an identical pin provided in the driving lever. The first blade and supporting blade are misaligned in such a way to reduce an overlapping degree of the first blade and supporting blade. The first blade and supporting blade bring the opening to the fully closed state in cooperation with the second blade.
REFERENCES:
patent: 2005/0073604 (2005-04-01), Umezu
patent: 2006/0039695 (2006-02-01), Naganuma
patent: 4-119434 (1992-10-01), None
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patent: 11-194387 (1999-07-01), None
patent: 2004-109531 (2004-04-01), None
Dictionary.com, “along” accessed Apr. 18, 2010 at dictionary.com.
International Search Report for International Application No. PCT/JP2007/065939 dated Nov. 1, 2007.
Japanese Office Action dated Oct. 26, 2010, along with its English translation.
Chinese Office Action dated Nov. 4, 2010, along with its English translation.
Mikami Makoto
Nakano Takashi
Numnual Phichet
Allen Stephone B
Doak Jennifer L.
Kratz Quintos & Hanson, LLP
Seiko Precision Inc.
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