S-LAL12Q has improved processability and durability of S-LAL12.
03.06.2020
We are pleased to introduce S-LAL12Q as an optical glass which has improved processability and chemical durability desired in the LAL region. S-LAL12Q has the same refractive index and abbe number as S-LAL12. A glass material that can be used in a wide range of applications, such as interchangeable, automotive and projector lenses.
(Product features)
１．Improved chemical durability (conventional ratio)
Water Resistance [RW(p)]: Class 1, Acid Resistance[RA(p)]: Class 3
２． Low specific gravity (conventional ratio): 3.59
| S-LAL12Q
(New Product) |
S-LAL12
(Current Product) |
||
| Eco Optical Glass | ○ | ○ | |
| Refractive Index nd | 1.67790 | 1.67790 | |
| Abbe Number νd | 55.35 | 55.34 | |
| CTE α
(10-7/℃) |
-30～+70℃ | 49 | 72 |
| +100～+300℃ | 59 | 86 | |
| Transformation Point Tg(°C) | 689 | 652 | |
| Yield Point At(°C) | 717 | 679 | |
| Coloring | λ80 | 380 | 360 |
| λ5 | 310 | 285 | |
| Chemical Resistance | RW(P) | 1 | 2 |
| RA(P) | 3 | 5 | |
| W(S) | 2 | 2 | |
| SR | 51.0 | 53.0 | |
| PR | 3.0 | 4.2 | |
| Specific Gravity | 3.59 | 4.01 | |
| Knoop Hardness Hk | 700〔7〕 | 560〔6〕 | |
| Abrasion Aa | 62 | 166 | |
| Detail Catalog DATA | |||
| Available shapes | •pressing •saw cut center-less ground cylindrical blanks •cut blanks |
•pressing •saw cut center-less ground cylindrical blanks •cut blanks |
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