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New Glass Types


S-LAH93 is an optical glass recommended for polished lens blank applications located in the high refractive index and low dispersion region. By tantalum-free and by reducing usage of expensive raw materials, S-LAH93 provides significant cost reduction and also features low specific gravity. This is the third glass that has been developed in the same concept as S-LAH89 and S-LAH92 that have been already released. We are pleased to introduce S-LAH93 optical glass with these unique properties to provide advantages in technical design and decreased production costs.

Eco Optical Glass
Refractive Index nd 1.90525
Abbe Number νd 35.04
-30~70°C 70
+100~300°C 86
Transformation Point Tg(°C) 677
Yield Point At(°C) 716
Coloringλ70 410
λ5 355
Chemical ResistanceRW(P) 1
RA(P) 3
W(S) 1
SR 4.0
PR 1.0
Specific Gravity 4.83
Knoop Hardness Hk 680 [7]
Abrasion Aa 51
Detail Catalog DATA PDF
Available shapes •pressing
•saw cut center-less ground
cylindrical blanks
•cut blanks
Please consult us about available size and tolerance.

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