Patent ID: 7274511
Filing Date: 2007-09-25
Classification: G02B

Abstract:
1. An anti-reflection film having reflectance minima in at least three wavelength regions containing respective three wavelength regions of three primary colors, said anti-reflection film comprising: a structure of 6 layers of thin films which are different from each other in at least one of an index of refraction and a film thickness, wherein said structure of said 6 layers of thin films comprises a first layer having an index of refraction 1.40 and a film thickness of 93.10 nm, a second layer having an index of refraction of 1.46 and a film thickness of 94.40 nm, a third layer having an index of refraction of 1.78 and a film thickness of 95.40 nm, a fourth layer having an index of refraction of 1.81 and a film thickness of 92.30 nm, a fifth layer having an index of refraction of 1.90 and a film thickness of 92.90 nm, and a sixth layer having an index of refraction of 1.40 and a film thickness of 90.90 nm.