BS ISO 9211-1:2010 pdf free.Optics and photonics — Optical coatings Definitions.
BS ISO 9211-1 ISO 9211 identifies surface treatments of components and substrates excluding ophthalmic optics (spectacles) by the application of optical coatings and gives a standard form for their specification. It defines the general characteristics and the test and measurement methods whenever necessary, but is not intended to define the process method.
This part of Iso 9211 defines terms relevant to optical coatings. These terms are grouped in four classes:basic definitions, definition of coatings by function, definitions of common coating imperfections and other definitions.
surface treatment of components and substrates application of a coating of material(s) intended to modify the optical, physical or chemical characteristics originally possessed by the surface of a component.
NOTE The substrates are considered to be geometrically perfect and optically homogeneous. In reality, an assembly made up of a substrate and a coating is identified and measured experimentally as an entity.
incident medium medium from which the electromagnetic radiation enters the coating.
emergent medium medium into which the electromagnetic radiation exits the coating.
NOTE Besides acting as mechanical support, the substrate carrying the coating physically can constitute the incident medium and/or the emergent medium.
The optical properties of a coated surface are characterized by spectrophotometric values. These values relate to the energy transported by electromagnetic waves (radiant or luminous) and they vary as a function of the wavelength, the angle of incidence, and the state of polarization. Additional influences may be caused by scattering.A surface for visual applications can be characterized by colorimetric parameters. These depend on the reference ilumination source, the reference observer, and the optical properties of the surface.
When a coating is used at an angle of incidence different from zero, its characteristics depend upon the state of polarization of the incident radiation and it may influence the polarization state of the emergent radiation. It may then be necessary to indicate the orientation of the electric field vector in relation to the plane of incidence.BS ISO 9211-1 pdf download.