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New Glass Types


Due to the high refractive index optical glass and abnormal partial dispersion(Δ θ g,F)this glass will be suitable for secondary color correction.
Due to the low transformation temrerature this will also be suitable for use in aspheric lens molding processes. L-LAH86 glass has very interesting properties and we think you will find it useful in new lens designs.

Optical properties Refractive Index nd 1.90270
Abbe Number νd 31.00
Coloring λ70 410
λ5 360
Anomalous dispersion θ g,F 0.5943
Thermal Properties CTE α
-30~+70°C 61
+100~+300°C 76
Transformation Point Tg(°C) 578
Yield Point At(°C) 610
Mechanical Properties Specific Gravity 4.90
Knoop Hardness Hk 650 [7]
Abrasion Aa 97
Chemical Properties Water Resistance RW(P)
(Powder Method)
Acid Resistance RA(p)
(Powder Method)
Weathering Resistance W(S)
(Surface Method)
Acid Resistance SR 4.2
Phosphate Resistance PR 2.0
Detail Catalog DATAPDF
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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