SSKN1 by Sumita
Obsolete
Very Rare
Environmentally Dangerous
SSKN1 by Sumita is an obsolete optical glass with a very rare melt frequency. It transmits from 0.33 to 2.00 µm with an nd of 1.6485 and a Vd of 53.0. It has average chemical resistance and dangerous environmental properties.
Refractive Index vs Wavelength
Refractive Index Calculator
dn/dλ vs Wavelength
dn/dλ Calculator
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Optical Properties
| Refractive Index (nd) | 1.6485 |
|---|---|
| Abbe Number (Vd) | 53.0 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.27 — 2.0 µm |
$$n(\lambda) = \sqrt{2.66545 - 0.00945667\,\lambda^2 + 0.018571\,\lambda^{-2} + 9.99784 \times 10^{-5}\,\lambda^{-4} + 3.38771 \times 10^{-5}\,\lambda^{-6} - 1.01132 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
Chemical Resistance
| Climatic Resistance | 2 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 4 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| S-BSM71 | Ohara | 1.648498 | 53.023881 | |
| E-BACED20 | Hoya | 1.6485 | 53.03 | |
| BACED20 | Hoya | 1.648498 | 53.03151 | |
| BSM71 | Ohara | 1.648497 | 53.035185 | |
| H-ZBAF3 | CDGM | 1.65691 | 51.12138 | |
| LACL3 | Hoya | 1.664798 | 53.401295 | |
| C58-51 | Corning | 1.658503 | 51.012014 | |
| SSKN5 | Schott | 1.65844 | 50.882921 | |
| N-SSK5 | Schott | 1.65844 | 50.88 | |
| S-BSM25 | Ohara | 1.658441 | 50.877554 |