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New Glass Types


S-LAH97 is an optical glass for polished lenses. We are successful in the cost reduction of S-YGH51 by removing expensive raw material from S-YGH51. We are pleased to introduce S-LAH97 as an optical glass which can be effective for cost reduction and higher performance of customer's products. S-LAH97 can be used in a wide variety of applications which are Interchangeable lenses for Single-lens reflex cameras, Projectors and so on.

(New Product)
(Current Product)
Eco Optical Glass
Refractive Index nd 1.75500 1.75500
Abbe Number νd 52.32 52.32
-30~70°C 58 58
+100~300°C 72 70
Transformation Point Tg(°C) 692 700
Yield Point At(°C) 709 712
Coloring λ80 355 370
λ5 - 280
Chemical ResistanceRW(P) 1 1
RA(P) 4 4
W(S) 2 1
SR 51.2 51.0
PR 2.0 2.0
Specific Gravity 4.17 4.40
Knoop Hardness Hk 730[7] 720[7]
Abrasion Aa 64 61
Detail Catalog DATA PDF PDF
Available shapes •pressing
•saw cut center-less
groundcylindrical blanks
•cut blanks
•saw cut center-less
groundcylindrical blanks
•cut blanks
Please consult us about available size and tolerance.

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