Kratz, Quintos & Hanson, LLP
Light quantity control device
A light quantity control device includes: a bottom board having an opening; a first blade, a supporting blade, and a second blade linearly moved in opposing directions and controlling the opening to a fully open state, a fully closed state, and a small aperture state; a driving lever connected to the set of blades and driving the set of blades by rotation of the driving lever; and a stopper restricting a rotational range of the driving lever. The set of blades controls the opening to the small aperture state when the driving lever is positioned at one end of the rotational range defined by the stopper.
Seiko Precision Inc.
G
G03B
inventional
Phichet Takashi Makoto
Numnual Nakano Mikami