Reflectance Curve – Kodial
The graph here shows typical before and after transmission effect of ‘AR’, ‘VAR’, and BBAR’ anti-reflective coatings on Kodial Viewports. Customers should specify wavelength range of application with their enquiry.
Please note that the optical reflectance curves are approximations and should be used for reference only.
The viewports comprise a borosilicate glass optic which is sealed to a Kovar weld ring using an induction heater process. The optic assemblies are TIG welded in to flanges and are helium leak tested and cleaned for ultra high vacuum (UHV) conditions.
The CF versions are offered using 304L or 316LN stainless steel flanges. Flanges in 316L stainless steel are used for the high vacuum KF and ISO viewports. The rugged construction of the Kodial viewports allows repeated bake out with UHV performance, whilst the window offers broadband optical transmission from the visible to near infrared. Anti-reflective coatings to match customer reflectance requirements are also processed at VacTechniche.
Please advise the wavelength or wavelength ranges of your application and a reflectance curve will be prepared. Nonstandard viewports can be manufactured on request, including re-entrant style microscope/ camera viewports. Annealed copper gaskets and other component accessories are also supplied by VacTechniche.