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SCHOTT
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Glass type
Glasses are assigned to glass families according to their position in the Abbe diagram. Environmentally friendly glasses are marked with the suffix "N-" or "P-" against the classic glasses. Prefixes such as "HT" or "HTultra" denote glasses with a high minimum transmission in the UV-near spectral range.
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L
Length in mm
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DIA
Diameter in mm
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nd
Refractive index at the yellow helium line at 587.5618 nm
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vd
Abbe number is a measure for the dispersion. It is calculated by νd=(nd-1)/(nF-nC)
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Weight
Weight (LB) greater than half is rounded up without taking tolerances into consideration.
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