S-LAH98 & S-LAH99 which have higher transmission, lower cost & lower specific gravity.
04.25.2018
S-LAH98 & S-LAH99 are optical glasses for polished lenses. We are successful in attaining higher transmission, lower cost & lower specific gravity at the region of glasses similar to S-LAH79.S-LAH98 & S-LAH99 can be used in a wide variety of applications which are lenses of Interchangeable lens cameras, Projectors and so on. We are pleased to introduce S-LAH98 & S-LAH99 as optical glasses which can be effective for cost reduction and higher performance of customer’s products.
| S-LAH98 (New Product) |
S-LAH99 (New Product) |
S-LAH79 (Current Product) |
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| Eco Optical Glass | ○ | ○ | ○ | |
| Refractive Index nd | 1.95375 | 2.00100 | 2.00330 | |
| Abbe Number νd | 32.32 | 29.14 | 28.27 | |
| CTE α (10-7/℃) |
-30～70℃ | 73 | 75 | 60 |
| +100～300℃ | 87 | 88 | 71 | |
| Transformation Point Tg(°C) | 723 | 725 | 699 | |
| Yield Point At(°C) | 757 | 761 | 731 | |
| Coloring | λ70 | 405 | 425 | 460 |
| λ5 | 355 | 360 | 370 | |
| Chemical Resistance | RW(P) | 1 | 1 | 1 |
| RA(P) | 1 | 1 | 1 | |
| W(S) | 1 | 1 | 2 | |
| SR | 3.0 | 2.0 | 1.0 | |
| PR | 1.0 | 1.0 | 1.0 | |
| Specific Gravity | 4.94 | 5.02 | 5.23 | |
| Knoop Hardness Hk | 650〔7〕 | 650〔7〕 | 700〔7〕 | |
| Abrasion Aa | 61* | 61* | 61 | |
| Detail Catalog DATA | ||||
| Available shapes |
•pressing
•saw cut center-less groundcylindrical blanks •cut blanks |
•pressing
•saw cut center-less groundcylindrical blanks •cut blanks |
•pressing
•saw cut center-less groundcylindrical blanks •cut blanks |
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Please consult us about product form of supply,available shapes,sizes and tolerances.