Our Optical Components

Colour Glass Filter

All our Colour Glass Filters are made from Schott Glass & Hoya Glass Materials.
We offer a complete range of colour glass filters for the ultraviolet, visible, and infrared spectral regions. Our services offer manufactured filters for use in a variety of applications ranging from scientific and analytical instruments to Astro-optics and photography. Filters can be supplied as round, square, and rectangular as standard, also custom-made sizes for special requirements. Heat absorbing filters give a high transmittance in the visible region and good absorption of heat infrared rays, making these filters highly effective for a variety of illumination equipment. Laminated combination filters for any spectral region can be offered to achieve a certain wavelength required. Spectral transmittance curves for all filters can be supplied on request.

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UV Fused Silica

UV Grade Fused Silica has excellent optical qualities and transmittance over a wide spectral range, especially in the ultraviolet.
It has a low coefficient of thermal expansion and low fluorescence, good resistance to thermal shock and scratching, making this an excellent material for UV transmission.

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IR Materials

Our standard Infrared Optical components range from the near Infrared to the far infrared spectral region.
Typical material types:
IR Grade Fused Silica, Sapphire, Germanium, Silicon, Calcium Fluoride (CaF₂), Magnesium Fluoride (MgF₂), Potassium Bromide (KBr), Zinc Selenoid, Zerodur, IR Filter Glass.
The wide range of use for Infrared optics makes these materials suitable for various applications, from high-power energy IR lasers to night vision systems.

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Optical flats / windows
Wedges / prisms / lenses
Stepped windows
Plates / Squares / Rectangular
Mirror substrates

Sapphire

Sapphire has excellent optical qualities and transmittance over a wide spectral range, especially in the infrared.
It has a low coefficient of thermal expansion and low fluorescence. It has excellent resistance to thermal shock and scratching, making this an excellent material for IR transmitting optics.
We can offer Sapphire with random orientation and C-cut Sapphire to zero-degree axis.

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Neutral Density Filters

Neutral Density Filters are manufactured from Schott Glass material.
We offer our standard filter sets comprising six filters:

Range: 0.50A / 1.00A / 1.50A / 2.00A plus a holmium oxide and Didymium oxide filter.

All our filter sets are mounted and labelled in black anodised 10mm cuvettes and supplied in a presentation box with a calibration certificate traceable to NPL standard.
Coated metal Inconel Neutral Density Filters on optical glasses for UV / VIS / IR range are available in a variety of sizes, either mounted or unmounted.

Custom Options:

Custom options can be supplied for all Neutral Density Filters, Holmium, and Didymium filters to meet customer specifications.
Available as sets or single filters in round, rectangular, or square options, mounted or unmounted.

Application:

Spectrophotometric calibration
Photometric systems
Astro-Optics
Radiometric

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ND filter sets
Coated ND filters
Custom-made filters
Round / Rectangular / Square

Optical Glass

The most common types of glasses used for optical applications are Crown and Flint glasses, based on their optical densities.
Flint Glasses containing lead provide high indices of refraction (1.75 / 1.80nd).
Crown glasses have indices of refraction 1.5 / 1.6nd.
We offer a wide range of optical glass types from Borosilicate, Crown glass, Corning glass, to high refractive Flint glasses.
Standard optical Crown glass, BK7, B270 are stock materials, suitable for many applications and widely used in various optical components due to their good optical performance.

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Filter Mounts / Holders

We can offer filters mounted in black anodised screw-in holders with retaining rings to fit most standard applications: 1.25”, 2” & 58mm diameters.
Filter holders can be laser printed or transfer printed to meet customer specifications, including filter details and logos.
Standard filter holders sold without filters are also available.
Cuvettes for spectrophotometers are available in black anodised material, with a standard size of 12.5mm x 12.5mm x 45mm external.
Custom-sized holders and cuvettes can be manufactured based on individual requirements.
Most holders and mounts are made from black anodised aluminium, but we also offer plastic mounts from black asitol material where appropriate.

Dichroic and Dielectric Coated Filters

We offer a large range of Dichroic colour filters, giving the option to transmit certain regions of the visible spectrum and reflect others.
Dielectric filters are coated filters and are practically absorbent-free.
Temperature range using various substrate materials is 150 / 450°C.

Hot Mirror / Heat Reflection Filter:

These filters provide excellent transmission in the visible region but reflect IR and block UV from light sources.

Cold Mirror / Heat Transmission Filter:

Works in contrast to the hot mirror, reflecting visible light and transmitting IR.

IR Transmission Filter:

Transmits IR wavelengths while blocking visible light at 400nm / 700nm.

IR Cut-off Filter:

Transmits visible light while blocking IR at 700nm.

UV Transmission Filter:

Allows UV transmission while blocking most visible light.

UV Blocking Filter:

Blocks undesirable UV radiation while allowing excellent visible transmission.

We can offer coatings such as: Anti-reflective, Single Layer, Multi-layer coatings & ITO coatings.

Front Surface Mirrors

Our standard mirrors are protected Aluminium coatings designed for applications in the visible and infrared regions.
The aluminium is over-coated with Silicon Monoxide (SiO) to protect the delicate aluminium, while maintaining the mirror's performance.
We also offer an over-coating of Magnesium Fluoride (MgF₂), an ultraviolet-transmitting dielectric, to preserve and enhance bare aluminium in the ultraviolet.

Application:

Imaging systems
Auto collimating
Laser application

Components:

Prisms
Lenses
Squares / Round mirrors
Ellipticals
Angled Rod Prisms