Relation of emittance to other optical properties

Key Points

• This research aims to derive an equation that connects spectral emittance of coatings to their properties and substrate reflectance.
• Derivation of an equation relating spectral emittance to thickness and optical properties of a partially transmitting coating.
• Consideration of the reflectance at the coating-substrate interface.
• Establishment of a relationship between spectral emittance and the thickness of the coating.
• Linking the optical properties of the coating to the reflectance of the underlying opaque substrate.