| 摘要 |
A dielectric mirror includes a coating having alternating high and low index layers. The high index layers comprise niobium oxide and/ or titanium oxide, and the low index layers comprise silicon oxide. The mirror coating has no metallic reflective layer of Al or Ag in certain example embodiments, and may have film side and/or glass side visible reflection of from about 50-90% (more preferably from about 60-80% and most preferably from about 65-75%) and visible transmission of from about 10-50% (more preferably from about 10-40% or 20-40%) in certain example embodiments. The thicknesses and relative thicknesses of the layers, as well as their refractive indices, are specified. Asymmetry of reflectance between the glass substrate side and the film side is achieved. |
