L-LAH86
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.
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L-LAH86 |
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| Optical properties |
Refractive Index nd |
1.90270 |
| Abbe Number νd |
31.0
31.00 |
| Coloring |
λ70 |
410 |
| λ5 |
360 |
| Anomalous dispersion θ g,F |
0.5943 |
| Thermal Properties |
CTE α
(10-7/°C) |
-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) |
1 |
Acid Resistance RA(p)
(Powder Method) |
3 |
Weathering Resistance W(S)
(Surface Method) |
3 |
| Acid Resistance SR |
4.2 |
| Phosphate Resistance PR |
2.0 |
| Detail Catalog DATA | PDF |
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| 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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