L-LAH87
Glass materials for high-refractivity and low-dispersion applications require high molding temperatures, which have in turn caused issues with the durability of metallic molds.
L-LAH87 is presented as a glass material that can be formed at lower temperatures, in the high-refractivity and low-dispersion region with an nd of 1.76 or more and a νd of 46 or more.
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L-LAH87 |
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| Eco Optical Glass |
○ |
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| Refractive Index nd |
1.77030 |
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| Abbe Number νd |
47.4
47.40 |
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CTE α
(10-7/°C) | -30～70°C |
71 |
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| +100～300°C |
88 |
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| Transformation Point Tg(°C) |
548 |
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| Yield Point At(°C) |
597 |
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| Coloring |
λ80 |
370 |
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| λ5 |
280 |
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| Chemical Resistance | RW(P) |
1 |
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| RA(P) |
4 |
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| W(S) |
2 |
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| SR |
51.2 |
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| PR |
2.0 |
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| Specific Gravity |
4.34 |
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| Knoop Hardness Hk |
640[6] |
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| Abrasion Aa |
79 |
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| Detail Catalog DATA |
PDF |
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| Available shapes |
•pressing
•saw cut center-less
groundcylindrical blanks
•polished ball |
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| Please consult us about available size and tolerance. |
