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optical coatings

Precision Optical Coatings

Antireflection Coatings

Antireflection Coatings reduce the reflections present the interface between an optic and the air or other background medium.  These can be single wavelength coatings for lasers or complex broad or multband coatings.  Light Coatings can produce coatings from UV - FIR wavelengths.

Optical coating reflection

Metallic Mirrors

A metallic mirror can be a 1st or 2nd surface coating of metal, typically Aluminium, SIlver or Gold to a produce a wide angle, high reflectivity surface.  These coatings can be complemented with optical layers to improve reflectivity in select wavelengths or with layers to protect the metal from oxidation, abrasion and chemical degredation.

Gold and Silver mirrors

Beam Splitters

A beam splitter coating is used to split the incident light into 2 different paths, either for rejection purposes or the split a signal.  These coating types typically work by;

- Splitting the wavelengths of incident light

- Splitting the light based on polarisation

- Splitting the intensity with a partial mirror 

beam splitters

Dielectric Mirrors

A dielectric mirror is a stack of high and low index optical materials which provide a very high reflection level.  These coatings are generally  give the highest reflectivity (>99.9% possible) but can be very thick and time consuming to produce compared to a metal mirror.

dielectric mirrors

Edge Filters

Edge filters are typically  versions of a high/low index stack and combined antireflection optimisations to provide a sharp transition from high reflection to high transmission.  These can be in the form of long or short pass filters or other iterations to selectively filter incident light.

mounted windows

Custom Optical Coatings

Light Coatings regularly undertake custom coatings including transparent conductive oxides such as ITO, speciliased functional coatings such a thermochromics as well as a range of other optoelectronic coatings.

4 Windows with optical coatings

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