Optical: systems and elements – Lens – With support
Reexamination Certificate
2009-06-30
2010-10-05
Hasan, Mohammed (Department: 2873)
Optical: systems and elements
Lens
With support
C359S700000, C359S811000, C359S819000
Reexamination Certificate
active
07808728
ABSTRACT:
A lens barrel that can be reduced in size and improve drive accuracy. A first cylindrical member is fixed. A rotatable second cylindrical member cam-engages with the first cylindrical member so as to move in an axial direction of an axial center. A third cylindrical member engaging with the first cylindrical member so as not to rotate can move in the axial direction by the rotation of the second cylindrical member. A fourth cylindrical member cam-engaging with the third cylindrical member engages with the second cylindrical member so as to move in the axial direction by following the rotation of the second cylindrical member. A lens holding member engaging with the third cylindrical member so as not to rotate relative to the third cylindrical member can move in the axial direction by cam-engaging with the fourth cylindrical member.
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Canon Kabushiki Kaisha
Cowan Liebowitz & Latman P.C.
Hasan Mohammed
LandOfFree
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