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New Glass Types


S-LAH92 is a tantalum-free optical glass recommended for polished lens blank applications. Located in the same extensively used area as S-LAH58 with potential for increased demand, S-LAH92 provides significant cost reduction and also features low specific gravity. We are pleased to introduce S-LAH92 optical glass with these unique properties to provide advantages in technical design and decreased production costs.

Eco Optical Glass
Refractive Index nd 1.89190
Abbe Number νd 37.13
-30~70°C 75
+100~300°C 87
Transformation Point Tg(°C) 689
Yield Point At(°C) 730
Coloringλ70 400
λ5 350
Chemical ResistanceRW(P) 1
RA(P) 3
W(S) 2
SR 4.0
PR 1.0
Specific Gravity 4.87
Knoop Hardness Hk 650 [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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