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New Glass Types


S-TIH57 is an optical glass recommended for polished lens blank applications and can give low cost in the region of higher refractive index than S-TIH53 which is used in a wide variety of applications. We are pleased to introduce S-TIH57 which can contribute cost reduction and high-performance to the lenses in the field of CCTV, FA / Machine Vision, Automotive Cameras and so on.

(New Product)
(Current Product)
Eco Optical Glass
Refractive Index nd 1.96300 1.84666
Abbe Number νd 24.11 23.78
-30~70°C 75 88
+100~300°C 91 104
Transformation Point Tg(°C) 672 624
Yield Point At(°C) 707 658
Coloring λ70 450 420
λ5 375 370
Chemical ResistanceRW(P) 1 1
RA(P) 1 1
W(S) 1 1
SR 3.0 1.0
PR 1.0 1.0
Specific Gravity 4.20 3.54
Knoop Hardness Hk 630[6] 520[5]
Abrasion Aa 97 170
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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