| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light quantity adjustment device which does not become malfunctioning or inoperable, and in which opening and closing operations of diaphragm blades can be smoothly performed. <P>SOLUTION: The light quantity adjustment device comprises: a pair of substrates being first and second substrates each having an exposed opening; and a plurality of diaphragm blades which are supported between the pair of substrates so as to be openable/closable and adjust quantity of passing light of the exposed opening. The diaphragm blade comprises: a blade substrate forming a base end part located outside of the exposed opening, and a blade part which moves to and away from the exposed opening and forms a diaphragm aperture; and an auxiliary substrate which has a joint surface for joining to the base end part and forms a first shank for penetrating from the joint surface through the base end part and a second shank erected on a side opposite to the joint surface. <P>COPYRIGHT: (C)2012,JPO&INPIT |
