Patent ID: 7864297
Filing Date: 2011-01-04
Classification: G03F

Abstract:
1. A light blocking device comprising: a deformable member being deformable in a first direction and elongating in a second direction intersecting with the first direction; a plurality of light blocking plates arrayed along the second direction, each of said plurality of light blocking plates being connected to said deformable member so that adjoining blocking plates of said plurality of light blocking plates partly overlap with each other; and a plurality of actuators being (i) arrayed along the second direction, (ii) configured to cause deformation of said deformable member and (iii) connected with each other only through said deformable member, wherein at least one of said plurality of light blocking plates is tiltable independently from the other light blocking plates, in response to deformation of said deformable member, to define a light blocking region based on edges of said plurality of light blocking plates.