Patent ID: 6818287
Filing Date: 2004-11-16
Classification: B32B,G03B,Y10T

Abstract:
A light shielding blade material for use in an optical apparatus, comprising:a substrate composed of a plastic film having a pair of surfaces opposed to each other, said substrate having no reinforcing fibers; a shield coating being capable of blocking an incident light and being formed on each surface of the substrate, the shield coating being composed of a paint resin containing a carbon black and having no reinforcing fibers; a reinforcement member disposed on each shield coating, the reinforcement member being composed of a thermosetting resin prepreg sheet reinforced with fibers arranged in an alignment direction, and hardened to laminate with the substrate through the shield coating, the thermosetting resin prepreg sheet containing no carbon black; and a lubricant coating having a black appearance and a lubricity sufficient to suppress a surface friction, the lubricant coating being formed on each reinforcement member such that the lubricant coating and the shield coating are separated from each other by the reinforcement member.