Optical Glass, Block Glass, Drawn Glass,
and Rolled Sheet Glass

In this material category, you will find a list of all glass types that do not exist in the form of flat glass or sheets. These materials are available as unprocessed glass blocks and are only turned into usable optics through sawing, grinding, shaping, and polishing. They are often available at large thicknesses so that even very thick optics can be made from these materials. Follow the links after the brief description to obtain detailed specifications and further information about these materials.

N-BK7 Optical Glass

N-BK7 is an optical bor-crown glass with high optical transmission and a pure and bright appearance. It is a very high-quality standard material used to fabricate demanding optics that work in the visible range. The raw material comes in the form of unprocessed glass blocks. Manufacturing optics from N-BK7 requires sawing, grinding, shaping, and polishing processes.
Read more about BK7...

Synthetic Quartz Glass, UV-Grade Fused Silica

Synthetic optical quartz glass (fused silica) offers excellent UV transmission down to about 180 nm and has a very low expansion coefficient. It is temperature-resistant up to 1000 °C and exceptionally chemically resistant.
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ULE^® Zero Expansion Titania Silicate Glass

ULE^® is a transparent glass with an extremely low thermal expansion coefficient, used for high-tech applications in space. From ULE®, we produce length standards, laser resonators, or components for space technology.
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PYREX^® (Code 7740) Borosilicate Glass

PYREX^® 7740 is a borosilicate glass composition with good temperature stability and exceptional acid resistance. It has a relatively low thermal expansion coefficient and great energy transmission from ultraviolet to infrared.
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VYCOR^® (Code 7913)

VYCOR 7913 is a quartz glass substitution material with a 96% SiO2 content made by CORNING, USA. It has similar properties as natural quartz glass, like high optical transmission in the ultraviolet up to the IR and high chemical resistance.
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The glasses mentioned above need to be optically processed before they can be used as optics. They are ground, polished, and shaped to the customer's specifications and coated if required.

We make optical windows, optical substrates, or virtually any other optical component from these glass materials. Please follow the above links to the datasheets of the respective optical glasses.

Is the block, drawn, or rolled glass you are looking for not listed above?

If you can't find the optical glass, block, drawn, rolled, or bar glass you need, please send us an inquiry. We stock and process almost all optical glasses from SCHOTT, CORNING, OHARA, and many other well-known glass manufacturers.

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Technical Glass

Optical Glass, Block Glass, Drawn Glass, and Rolled Sheet Glass