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Introducing a new optical glass type: S-LAH99W, an improved transmittance version of S-LAH99
11.30.2022
We are pleased to announce the release of a new optical glass type named S-LAH99W, which has improved internal transmittance in the 360 – 550 nm range while maintaining the high refractive index (Nd 2.001), low specific gravity and excellent polishing characteristics of S-LAH99. This new industry-leading, high index, glass provides an exciting new choice for optical designers and is very well suited for use in applications such Augmented Reality waveguides and other devices.
（Internal Transmittance Curve）
| S-LAH99W
(New Product) |
||
| Eco Optical Glass | 〇 | |
| Refractive Index nd | 2.00100 | |
| Abbe Number νd | 29.14 | |
| CTE α
(10-7 K-1) |
-30～+70℃ | 75 |
| +100～+300℃ | 88 | |
| Transformation Point Tg Tg(℃) | 725 | |
| Yield Point At At(℃) | 761 | |
| Coloring | λ70 | 405 |
| λ5 | 360 | |
| Chemical Resistance | RW(P) | 1 |
| RA(P) | 1 | |
| W(S) | 1 | |
| SR | 2.0 | |
| PR | 1.0 | |
| Specific Gravity | 5.02 | |
| Knoop Hardness Hk | 720〔7〕 | |
| Abrasion Aa | 55 | |
| Detail Catalog DATA | ||
(Please consult us about product form of supply, available shapes, sizes and tolerances.)