Patent ID: 7046441

Claim:
A high transmittance sub-wavelength structure polarization module, comprising: a transmission substrate, having a top surface and a bottom surface, said top surface being composed of a plurality of projecting parts and a plurality of sunken parts, wherein said sunken part has a first sub-wavelength structure disposed thereon and said projecting part has a second sub-wavelength structure disposed thereon; and a plurality of collimation units, being disposed at the bottom surface of said transmission substrate corresponding to said projecting and sunken parts of said top surface; wherein each collimation unit of the plurality of collimation units is capable of collimating a light into a position of said corresponding sunken part, wherein a light source is arranged beneath each collimation unit of the plurality of collimation units for providing said light, and said light composed of a first-polarized light and a second polarized light.