Glass lens and optical system, resin formation die, glass lens production device, and glass lens production manner

摘要

P To provide a resin-molded large-aparture meniscus shaped lens with high surface accuracy, which has an optical axis directional lens mounting reference plane ON a barrel abutting surface and to provide a resin molding die therefor. PSOLUTION: The resin-molded meniscus-shaped lens includes a lens outer circumferential flange part. A gradient part where the outer diameter is gradually reduced toward the convex surface side of the lens is provided ON the outermost circumferential side surface of the lens outer circumferential flange part. PCOPYRIGHT: (C)2009 and JPO& INPIT