OPTICAL GLASSES WITH ULTRA-HIGH TRANSMITTANCE
As part of its extensive portfolio of optical glass types, SCHOTT has been offering special glass variants that are known for their superior transmittance. These special glass types with significantly improved transmittance, all being identified with the suffix "HT" or "HTultra", are especially suitable for digital projection and high end optical systems.
Our current portfolio includes 12 "HT" and "HTultra" glasses, e.g. N-BK7HT, N-SK2HT and is continuously extended, whereas the new glass type N-BAK4HT, the high refractive index glasses N-LASF9HT and N-LASF45HT, as well as N-SF57HTultra and N-SF6HTultra exhibit the best transmittance values available in the market.
"HT" and "HTultra" glasses are provided as raw material, as pressings and in the form of finished components.
"HT" and "HTultra" glasses are available as:
* Other supply forms and dimensions upon request (depend on glass type).
We also offer high-precision optical components made of "HT" and "HTultra" glasses.
* wavelength for transmittance 0.7 and 0.05
** 10 mm thickness, 400 nm wavelength
*** Whereas the internal transmittance curves of standard optical glasses in the datasheet comprise median values for the glass types, "HT" and "HTultra" glass internal transmittance curves are guaranteed minimum values for internal transmittance in the visible spectrum. Shown graphics are valid for 25 mm sample thickness.
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