Knowledge Centre

This page lists corporate documents about our business and also specialist data sheets relating to our optical components and materials. These are available to download from Crystan Ltd.

Note: While every care has been taken to ensure that documents in the download section are virus free, when downloading any file you should always have an up-to-date virus checker.

Specialist Data


Barium Fluoride BaF2
Cadmium Telluride (CdTe)
Caesium Bromide CsBr
Caesium Iodide CsI
Calcite CaCO3
Calcium Fluoride CaF2
Crystal Quartz SiO2
Fused Silica SiO2
Gallium Arsenide GaAs
Gallium Lanthanum Sulphide GLS
Germanium Ge
KRS5 Thallium Bromo-Iodide
KRS6 Thallium Bromo-Chloride
Lanthanum Fluoride LaF3
Lead Fluoride (PbF2)
Lithium Fluoride LiF
Magnesium Oxide Mgo
Magnesium Fluoride MgF2
Optical Glass
Potassium Bromide KBr
Potassium Chloride KCl
Potassium Iodide KI
Rubidium Bromide RbBr
Rubidium Chloride RbCl
Rubidium Iodide RbI
Rutile TiO2
Sapphire Al2O3
Silicon Si
Silver Bromide AgBr
Silver Chloride AgCl
Sodium Chloride NaCl
Sodium Fluoride NaF
Spinel MgAl2O3
Strontium Fluoride SrF2
Thallium Chloride TlCl
Thallium Chloride TbCl
Yttrium Aluminium Garnet YAG
Zinc Selenide ZnSe
Zinc Sulfide ZnS FLIR
Zinc Sulfide ZnS Multispectral

Data relevant to special techniques

GLS Absorption

Near IR Absorption in Ga:La:S

KRS5 Safe Handling

Handling of KRS5 Optics

Guide to Calcium Fluoride Grades

Guide to Calcium Fluoride IR UV VUV Eximer and Raman Grades

Guide to Lanthanum Fluoride

Guide to Lanthanum Fluoride Ion-Selective Electrodes

Guide to Sapphire

Rough Guide to Sapphire

Guide to Grain Boundaries

Single Crystal versus Grain Boundaries

Guide to Quartz

Guide to Quartz Handedness

Guide to Cutting ZnSe and ZnS

Recommended direction for cutting ZnSe & ZnS

Guide to Silica

Rough Guide to Silica Glass

Zinc Selenide Handling

Handling of Zinc Selenide Optics

Thorium Coatings

Handling of Coatings containing Thorium Compounds


Aspheric Lens Design

Aspheric lenses discussion and formula

Cleaning Optics

How to clean optics - if you must!

Crystal Quality

Standard crystal quality benchmark

Design of Pressure Windows

Calculation of pressure window thickness

Guide to Thermal Properties

Materials and Thermal Shock


Conditions of Sale

Our Terms & Conditions

Quality Policy

Crystran Quality Policy

ISO9001 Certificate

Crystran Current Certificate from LRQI

Conditions of Purchase

Conditions of Purchase

Environmental Policy

Crystran Environmental Policy

ISO14001 Certificate

Crystran Current Certificate from SGS

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