1. Anti-Reflection Coated
Anti -reflective coating reduces reflection of an optical device by using an optical coating when applied to the surface of a lens. The coating consists of a thin transparent film which produces two reflected waves, this creates a double interface. We stock two types of coating:
1.Multi-layer broad band coating, which is of very high quality and durability when applied to both surfaces of the glass. It also eliminates more than 90% glare and reflections.
2.OIF coating which is produced by dipping process on an interference optical basis. When applied to both surfaces there is a reduction in glare and reflections.
Application: Anti-Reflective coating is used for its capability to reduce reflection. This is especially useful for telescopes where contrast is improved. AR coating is also used on eye glasses and binoculars. Other uses include corrective lenses and camera lenses.
(i) Multi-layer broad band anti-reflection coatings are of high quality and very durable when applied to both surfaces of the glass. Eliminates more than 90% of glare and reflections. Available in 1.1, 1.6 and 3mm thicknesses. Used in VDU and LCD displays.
(ii) DIP coated anti-reflection glass – Anti-reflection coated glass produced by the dipping process on an interference-optical basis.
Applied to both surfaces it reduces disturbing glare and reflections. Used for picture glazing and showcased. Thicknesses available: 2, 3, 4 and 6mm from stock;
8 and 10mm laminated can be ordered.
2. Dichroic Coloured Filters
Dichroic filters are very accurate filters and have the ability to transmit certain regions of the visible spectrum and affect others with a high degree of efficiency. The coating is able to withstand up to 350 Degree C and will not fade, making this perfect for lighting. The light produced is perceived to be high saturation in colour, however they will not suffer from a burn out and can be used in close proximity to high powered light sources.
Application: Dichroic filters are especially popular in the architectural and theatrical field as well as for use in the home and commercial lighting. In addition dichroic filters can be used as a beam splitter and also as prism within LCD projectors to split white light. Dichroic filters have also been used as glass jewellery producing an iridescent effect.
We have a vast range of dichroic filters in stock in a wide range of colours and thicknesses, 1.1, 1.75, 2.0 & 3.3mm. Dichroic colour filters transmit certain regions of visible spectrum and reflect others with a high degree of efficiency. In contrast with our standard colour glass they are practically absorbent free.
The maximum temperature the coating will withstand is about 350 Degrees C and will not fade, which makes them perfect for the lighting industry. These characteristically result in high transmission colour saturated filters which will not suffer from burnout and can be used in close proximity to high powered light sources.
We hold a very extensive range of colours and various shades of these colours in stock and we can generally match any colour that is required.
We can also cut the glass in a wide range of shapes for specific fittings or projects that may be required, by our skilled cutters and CNC machines.
Dichroic coloured filters Glass
4. Neutral Density Filters
A neutral density filter is one which reduces light intensity, modifying the intensity of all wave lengths or colours, but with no change in hue.
This allows a photographer to be able to change aperture, shatter speed and or motion blur under varying conditions and circumstances.
Application: ND filter is primarily used for photography to make use of a larger aperture. A ND filter can also be used within large telescopes to reduce brightness/contrast of the moon and planets.
ND filters are also found in high precision laser experiments where they are used to reduce light levels without disrupting the settings of a laser.