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An optical glass with an improved transmittance version of S-LAH99.
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.
| S-LAH99W (New product) | ||
| Eco Optical Glass | 〇 | |
| Refractive index nd | 2.00100 | |
| Abbe number vd | 29.14 | |
| CTE α (10 -7 K-1) | -30 ~ +70°C | 75 |
| +100 ~ +300°C | 88 | |
| Transition point Tg (℃) | 725 | |
| Yield point At (℃) | 761 | |
| Coloring degree | λ 70 | 405 |
| λ 5 | 360 | |
| Chemical durability | 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 degree Aa | 55 | |
| Available Shapes | ・Pressings ・Polished Preforms ・Polished Lenses ・Aspherical Glass Mold Lenses | |
Ohara Corporation Western Office
23141 Arroyo Vista, Suite 200
Rancho Santa Margarita, CA 92688
TEL: (949) 858-5700
FAX: (949) 585-5455
Ohara Corporation Eastern Office
50 Columbia Road, Branchburg
New Jersey 08876-3519
TEL: (908) 218-0100
FAX: (908) 218-1685
