Patent ID: 7936513
Filing Date: 2011-05-03
Classification: B42D,G02B

Abstract:
1. A diffraction grating recording medium, comprising: a waveguide layer, having a reflective surface and a light incident surface, wherein a thickness of the waveguide layer is between 100 nanometers and 2 micrometers, and the reflective surface reflects a light entering the waveguide layer from the light incident surface; and a grating structure layer, disposed on the light incident surface of the waveguide layer, wherein the grating structure layer has a plurality of diffractive elements, and an arranging period of the diffractive elements is between 50 nanometers and 900 nanometers, wherein the diffractive elements have a width of 2.32 micrometers, a height of 0.4 micrometers, an arranging period of 0.58 micrometers, and the waveguide layer has a thickness of 0.1 micrometers.