Patent ID: 8149522
Filing Date: 2012-04-03
Classification: G02B

Abstract:
1. An image forming optical system comprising: a lens component which comprises a lens L the intermediate layer L a shape of an optical surface C of the intermediate layer L the lens L where, νd νd νd where, nd nd nd wherein in a rectangular coordinate system with a horizontal axis let to be νd θgF an area which is determined by a straight line when it is a lower limit value of a range of the following conditional expression (7) and a straight line when it is an upper limit value of the range of the following conditional expression (7), and an area determined by the following conditional expression (9) include θgF in a rectangular coordinate system with a horizontal axis let to be νd nd an area which is determined by a straight line when it is a lower limit value of a range of the following conditional expression (8) and a straight line when it is an upper limit value of the range of the following conditional expression (8), and an area determined by the following conditional expression (9) include nd where, θgF νd nd