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New Glass Types


S-LAH71 features a high refractive index and unique dispersion properties enabling you to produce compact optical systems for digital cameras and other applications.

Eco Optical Glass
Refractive Index nd 1.85026
Abbe Number νd 32.27
-30~70°C 77
+100~300°C 91
Transformation Point Tg(°C) 707
Yield Point At(°C) 752
Coloringλ70 425
λ5 370
Chemical ResistanceRW(P) 1
RA(P) 1
W(S) 2
SR 2.0
PR 1.0
Specific Gravity 4.36
Knoop Hardness Hk 590 [6]
Abrasion Aa 140
Detail Catalog DATA PDF
Available shapes •pressing
•saw cut center-less ground
cylindrical blanks
•polished ball
•cut blanks
Please consult us about available size and tolerance.

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