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New Glass Types


S-NPH1W is an optical glass that the transmittance has been greatly improved by optimizing the production process of S-NPH1. Since any other properties are the same as S-NPH1 except transmittance, the conventional handling method can be maintained in the polishing process and the others. We are pleased to introduce S-NPH1W optical glass with these unique properties to provide design flexibility for the lens thickness and the usage number of lens.

Eco Optical Glass
Refractive Index nd 1.80809
Abbe Number νd 22.76
-30~70°C 83
+100~300°C 104
Transformation Point Tg(°C) 552
Yield Point At(°C) 589
Coloring λ80 420
λ5 375
Chemical ResistanceRW(P) 1
RA(P) 1
W(S) 1~2
SR 1.0
PR 1.0
Specific Gravity 3.29
Knoop Hardness Hk 460[5]
Abrasion Aa 291
Detail Catalog DATA PDF
Available shapes •pressing
•saw cut center-less
groundcylindrical blanks
•cut blanks

Please consult us about available size and tolerance.

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