S-FPM2
Introducing S-FPM2, an anomalous dispersion glass in the intermediate refractive index region that is easy to handle when processing and cleaning, thanks to the excellent balance between wear rate and acid resistance.
By combining it with a glass material of high refractive index and high dispersion, this product can be effective for correcting chromatic aberration and manufacturing compact lens units.
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S-FPM2 |
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| Eco Optical Glass |
○ |
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| Refractive Index nd |
1.59522 |
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| Abbe Number νd |
67.7
67.74 |
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CTE α
(10-7/°C) | -30～70°C |
117 |
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| +100～300°C |
135 |
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| Transformation Point Tg(°C) |
571 |
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| Yield Point At(°C) |
596 |
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| Coloring |
λ80 |
365 |
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| λ5 |
310 |
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| Chemical Resistance | RW(P) |
1 |
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| RA(P) |
2 |
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| W(S) |
2 |
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| SR |
51.3 |
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| PR |
4.1 |
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| Specific Gravity |
4.17 |
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| Knoop Hardness Hk |
390[4] |
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| Abrasion Aa |
488 |
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| Detail Catalog DATA |
PDF |
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| Available shapes |
•pressing
•saw cut center-less
groundcylindrical blanks
•polished ball
•cut blanks |
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Please consult us about available size and tolerance.
