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 moving in opposing directions and controlling light quantity passing through the opening; and a driving lever connected to the set of blades and driving the set of blades by rotation of the driving lever. The driving lever rotates within degrees centering on a phantom line A passing through a rotational center of the driving lever and being parallel with the moving directions of the blades.
Seiko Precision Inc.
G
G03B
inventional
Takashi Phichet Makoto
Nakano Numnual Mikami