Optical: systems and elements – Lens – With variable magnification
Reexamination Certificate
2007-04-10
2007-04-10
Ben, Loha (Department: 2873)
Optical: systems and elements
Lens
With variable magnification
C359S694000, C359S695000, C359S700000, C359S701000, C359S823000, C359S825000, C396S246000, C396S268000, C396S072000, C396S355000, C396S535000, C348S240990, C348S357000
Reexamination Certificate
active
11340720
ABSTRACT:
A lens device in which a first movable lens holding frame and a second movable lens holding frame are moved along an optical axis by rotating a cam cylinder rotatably provided on a lens barrel, an escape channel for escapement of a portion of the second movable lens holding frame being formed in the first movable lens holding frame, the lens device comprising:a light shielding member moved along the optical axis by the rotation of the cam cylinder, the light shielding member being moved to a position at which the light shielding member closes the escape channel of the first movable lens holding frame.
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Ben Loha
Fujinon Corporation
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