Crystran Ltd specialises in the manufacture and supply of optical components. We manufacture high quality windows, lenses, prisms and specialist optics using a wide range materials, including calcium fluoride, barium fluoride, magnesium fluoride, zinc sulphide, zinc selenide, geranium, and many other exotic materials. Our products are used in ultraviolet, visible and infrared optical systems all over the world. A wide variety of windows, lenses, prisms and ATRs are available as standard products, but we also manufacture bespoke optical components for specialist applications. In fact, the very nature of the IR, UV and visible optics industry means that custom components form the bulk of our operations. Crystran draws upon the experience of its optical experts and utilises state-of-the-art technologies to deliver first class solutions in line with our customers' design requirements. Customised optics can be manufactured as prototypes and in larger quantities. Our reputation as a leading manufacturer of windows, lenses, and prisms extends to the four corners of the globe. The quality of our products has been the cornerstone of our success for many years, and we remain fully committed to the ongoing improvement in product and service standards. Our operations are constantly monitored to ISO 9001 standards to ensure quality is maintained. Crystran is also now accredited to the Environmental Standard ISO 14001:2004. We employ an expert team of sales staff that possess in-depth knowledge not only of the optical components themselves, but also of the chemistry and physics of materials and crystal growth. They can provide all the advice and guidance you need to indentify the right product for your application. Give them a call or send a fax or email, and they’ll get back to you immediately with a response to your query. One of the many reasons why customers keep coming back to Crystran is our flexible approach to manufacturing. Whether you need a single optic or a high volume manufacturing run, we’re always ready to accommodate your needs. Crystran works with a wide range of crystals and innovative glasses that are valued for their transmission properties. You can find out more about these in the short summaries below. More information can be found by visiting the Crystran website, where Pdf downloads are available detailing each and every material that we use. If you would like any further advice or guidance regarding Crystran and the products we offer, please do not hesitate to get in touch with our experts.
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Calcium Fluoride is commonly used to produce windows,
prisms and lenses used in IR applications. The purest grades of Calcium Fluoride
are often used in UV applications such as UV Excimer Laser Windows. It is
available doped with Europium as a beta and low energy gamma-ray scintillator.
To find out more, simply follow the link.
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Barium Fluoride is commonly used in
spectroscopic components and is suitable for applications in the passive IR band
(8 to 14µm). It can also be used as view-port window for
thermography.
The highest quality Barium Fluoride is the fastest known scintillator material
and may be employed in High Energy Physics Experiments. BaF2
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This is a high index material that is used to manufacture Attenuated Total
Reflection (ATR) prisms typically employed for spectroscopy. With a refractive
index of
4.0026 at 11µm, Geranium makes an effective natural 50% beamsplitter without the
need for coatings. It is also extensively used as substrate for production of
optical filters. AR Coatings can be applied to produce an extremely tough front
optic. For information on transmission range, reflection loss, absorption
coefficient, density, melting point, conductivity and hardness, head directly to
the Crystran website.
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Lithium Fluoride is the material
with the most extreme UVV
transmission of all, and as such is used for specialised UV optics. It transmits
very well into the VUV region at the
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Magnesium Fluoride transmits well into the VUV region to the hydrogen
Lyman-alpha line (121nm) and beyond. It is most commonly used for UV optics and
is excellent for Excimer laser applications. Magnesium Fluoride is a tough
material that polishes very well. It can be worked to the very highest
standards, and is usually supplied with the optic axis cut perpendicular to the
window faces. For more information and specifications, just follow the link.
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Quartz crystal is a synthetically produced material
that is widely used as a wave retardation mediumm .
The birefringent properties of Quartz are of use in quarter-wave plates and in
polarisers. It is also often used for electronic filters and resonators.
Crystalline quartz should not be processed or used a temperature greater than
490°C – this is because it will start to revert to a glassy state where
annealing is unlikely, and component fracture is very probable.
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Sapphire is highly valued for its
extreme toughness and strength. It is a very useful optical window material that
can be used in UV, visible and near infrared applications. It has a transmission
range
of
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This material is mostly used as an optical window - primarily in the 3 to 5
micron band - and also as a substrate for the production of optical filters.
Large blocks of silicon with polished faces are used as neutron targets in
physics experiments. It has a transmission range
of
1.2 to 15µm, a refractive index of 3.4223 at 5µm, and reflection loss of 46.2%
at 5µm. If you would like to find out more about the properties and uses of
silicone in optics, head to the Crystran website, where you will also find Pdf
technical data sheets on all of the materials we use to make glasses, lenses and
prisms.
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http://www.crystran.co.uk
