Patent ID: 8233101
Filing Date: 2012-07-31
Classification: G02B,G02F,G03B,G11B

Abstract:
1. A laminated wave plate comprising a first wave plate with a phase difference of Γ 1 =180° with respect to a designed wavelength λ 0 and a second wave plate with a phase difference of Γ 2 =180°, in which the first wave plate and the second wave plate are arranged and laminated so that optical axes thereof intersect each other, wherein when in-plane bearing angles of optical axes of the first and second wave plates are represented by θ wherein the maximum value a A A A A A A satisfies the following expressions in the designed wavelength range of 490≦λ A A A A A A A A satisfies the following expressions in the designed wavelength range of 520≦λ A A A A A A A