Patent ID: 7961393
Filing Date: 2011-06-14
Classification: G02B

Abstract:
1. A selectively absorptive wire-grid polarizer device for polarizing incident light and selectively absorbing one polarization, the device comprising: a) a substrate; b) at least two thin film layers, disposed over the substrate, the film layers having different refractive indices with respect to one another and each having a thickness less than 170 nm; c) the refractive index of at least one of the two film layers being greater than a refractive index of the substrate; and d) a wire-grid layer, disposed over the substrate, the wire-grid layer including an array of elongated metal elements having lengths longer than a wavelength of the incident light and a period less than half the wavelength of the incident light; and e) at least one of the film layers including a material which is optically absorptive of the incident light defining an absorptive layer such that one polarization is substantially absorbed.