Thin Film Optical Coatings

摘要: Within the scientific conception of modern world, thin film optical coatings can be interpreted as one-dimensional photonic crystals. In general, they are composed a sequence single layers which consist different transparent dielectrics with thickness in nanometer scale according to operation wavelength range. The major function these structures is adapt properties an surface needs specific applications. By application optimized designs, spectral characteristics modified practically any required transfer for certain For example, Fresnel reflection lens or laser window suppressed broad range by depositing antireflective coating containing only few layers. On basis layer stack alternating high- and low-refracting materials, high reflectance values up 99.999% achieved wavelength. addition basic functions, realize variety filter even extremely sophisticated demands precision optics technology. Moreover, recent developments technology provide means combine selected other features concerning, instance, thermal, mechanical chemical stability surface. latest progress ophthalmic includes integration self-cleaning, photoactive anti-fogging functions on glass.