Korth Kristalle GmbH

Refractive Index

A selection of our optical components for various applications


We are delighted that you have found your way to our website. We hope this means we are on the same Wavelength The range of electro-magnetic waves covers a wide spectrum of wavelengths from a trillionth of a meter in length up to waves which are some 1000 meters long (you can visualize the wavelength as the distance between two neighbouring wave crests or wave troughs). These waves (or energy radiations) are generated by the movement of atomic particles and their electrical charges (which in turn bring magnetic forces into play). In a vacuum, electro-magnetic waves travel at the speed of light (30000000 m/s). The relationship between frequency and wavelength is determined by the following formula: Wavelength =speed of light / frequency - because we know all about wavelengths! Our client relationships are very important to us, we regard them as the foundation for good co-operation.

For nearly 70 years we have grown crystals and used them to manufacture highly precise optical components for the Infrared, Ultraviolet and visible regions of the spectrum.

More information about our achievements over the last 70 years and the people behind Korth Kristalle GmbH can be found under “Our Business”.

Our products are used in a wide variety of applications where high quality, precise, technical  equipment is essential – from analytics to medical and space technology. If you are interested in a particular area, please click on the corresponding link.

We are always available to advise on the best choice of materials and to assist with any problems you may have with your own materials or components. We offer a repair service and can test your own materials using our equipment.

If you would like to know more about the way we work, what our factory looks like or what steps are required to turn a raw crystal into a perfect lens, then please click on Our Day.