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New Glass Types


L-LAH90 is a tantalum-free optical glass recommended for glass molding applications. By reducing usage of expensive raw materials, L-LAH90 provides significant cost reduction and also features low specific gravity. We are pleased to introduce L-LAH90 optical glass with these unique properties to provide advantages in technical design and decreased production costs.

Eco Optical Glass
Refractive Index nd 1.83220
Abbe Number νd 40.10
-30~70°C 63
+100~300°C 74
Transformation Point Tg(°C) 607
Yield Point At(°C) 644
Coloring λ80 410
λ5 340
Chemical ResistanceRW(P) 1
RA(P) 4
W(S) 2
SR 5.2
PR 1.2
Specific Gravity 4.65
Knoop Hardness Hk 640[6]
Abrasion Aa 73
Detail Catalog DATA PDF
Available shapes •pressing
•saw cut center-less
groundcylindrical blanks
•polished ball
Please consult us about available size and tolerance.
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