Patent ID: 6104534
Filing Date: 2000-08-15
Classification: C03C,G02B

Abstract:
An optical member having a coating for reducing a ray reflecting on the coating and for reducing an electromagnetic wave incident on the coating, the optical member comprising:a transparent substrate; andsaid coating formed on said transparent substrate, comprising:a first light transmitting thin layer having a high refractive index, formed over said transparent substrate;a first light transmitting thin layer having a low refractive index, formed over said first light transmitting thin layer having the high refractive index;a second light transmitting thin layer having a high refractive index, formed over said first light transmitting thin layer having the low refractive index;a second light transmitting thin layer having a low refractive index, formed over said second light transmitting thin layer having the high refractive index; anda third light transmitting thin layer having a low refractive index, provided between said transparent substrate and said first light transmitting thin layer having the high refractive index,wherein at least one of said first light transmitting thin layer having the high refractive index and said second light transmitting thin layer having the high refractive index is a transparent conductive layer having a sheet resistivity of 100 .OMEGA./.quadrature. or less,wherein at least one of said first light transmitting thin layer having the low refractive index and said second light transmitting thin layer having the low refractive index includes one of silicon dioxide, silicon monooxide and magnesium fluoride,wherein said transparent substrate is a plastic substrate, andwherein said third light transmitting thin layer having the low refractive index is provided on said transparent substrate.