PHOTOGRAPHIC LENS

摘要

PURPOSE: A photographic lens is provided to revise aberration including chromatic aberration and to reduce costs by having a small sized structure. CONSTITUTION: A photographic lens arranges a first lens(10) and a second lens(20) from an object to an image in order. The first lens has positive refraction power. The second lens has negative refraction power. The first lens is formed into meniscus shape to the object side. The second lens is formed into concave shape to the object side from a radical axis. The refractive power of the first lens is 85%-100% of entire refractive power of the photographic lens. The radical axis curvature radius of the first lens is bigger than the radical axis curvature radius of the second lens.