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New Glass Types


S-LAH88 is a tantalum-free glass with the lowest anomalous dispersion among glass types with both high refractive-index and high dispersion. By combining S-LAH88 with anomalous dispersion glasses with both low refractive index and low dispersion, S-LAH88 can be utilized for secondary color correction. In addition, its transmittance is superior to S-TIH53W glass and it is possible to use more than 1 element of S-LAH88 in products such as interchangeable lenses or zoom lenses. We are pleased to introduce S-LAH88 glass with unique properties, which will enable leading edge optical designs.  

Eco Optical Glass
Refractive Index nd 1.91650
Abbe Number νd 31.60
-30~70°C 51
+100~300°C 71
Transformation Point Tg(°C) 616
Yield Point At(°C) 642
Coloringλ70 400
λ5 355
Chemical ResistanceRW(P) 1
RA(P) 3
W(S) 1
SR 3.2
PR 1.1
Specific Gravity 4.74
Knoop Hardness Hk 650 [7]
Abrasion Aa 68
Detail Catalog DATA PDF
Available shapes •pressing
•saw cut center-less ground
cylindrical blanks
•cut blanks
Please consult us about available size and tolerance.

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