by Abrisa Technologies | Aug 7, 2021 | Coatings Corner
A dichroic filter, thin-film filter, or interference filter is a very accurate color filter used to selectively pass light of a small range of colors while reflecting other colors. By comparison, dichroic mirrors and dichroic reflectors tend to be characterized by the...
by Abrisa Technologies | Aug 7, 2021 | Coatings Corner
Oleophobic (anti-smudge) coatings on glass and ceramic surfaces create an oil resistant, anti-fingerprint surface that is impervious to dirt, dust, oils, and other particulates resulting in a surface that is easy-to-clean and maintains a cleaner surface longer than...
by Abrisa Technologies | Aug 7, 2021 | Coatings Corner
A UV blocking filter or ultraviolet optical filter prevents ultraviolet light transmission. UV filters are commonly used in photography to reduce the level of ultraviolet light that strikes the recording medium. Historically, photographic films were mostly sensitive...
by Abrisa Technologies | Aug 7, 2021 | Coatings Corner
A neutral density or ND optical filter reduces or modifies the intensity of all wavelengths or colors of light equally, therefore providing for no changes in the hue of the color rendition. Neutral density filters can be colorless or clear, or they can be grey in...
by Abrisa Technologies | Aug 7, 2021 | Coatings Corner
Hot and cold mirrors “heat control filters” are types of dichroic filters used to remove unwanted energy from a light emitting source. Hot Mirror A hot mirror is a dichroic filter that reflects 90% of near infrared (NIR) and infrared (IR) light while transmitting up...
