Member for light shielding blades.

摘要

A light weighted and strong plate member for light-shielding blades usable for the super-high speed shutter of a camera or the like is of a symmetrical structure with respect to plane, and comprises reinforced surface layers having the continuous fiber of carbon fibers arranged in one direction parallel or substantially parallel to the longitudinal direction of the light shielding blade, and matrix resin including this fiber, and a reinforced intermediate layer having the continuous fiber or staple fiber of carbon fibers arranged in one direction, and matrix resin including this fiber. The fiber directions of the intermediate layer and surface layers is substantially rectangular to each other, and the carbon fiber of the surface layers has a tensile modulus of elasticity of 30,000 Kgf/mm<2> or more, tensile strength of 350 Kgf/mm<2> or more, and tensility of 1.0% or more, and the carbon fiber of the intermediate layer has a tensility of 1.0% or more.