K-SKLD310(M) by Sumita
Standard
Rare
Environmentally Friendly
K-SKLD310(M) by Sumita is a standard optical glass with a rare melt frequency. It transmits from 0.33 to 2.00 µm with an nd of 1.60132 and a Vd of 49.0. It has low thermal expansion (CTE of 4.8×10⁻⁶/K) and excellent chemical resistance.
Refractive Index vs Wavelength
Refractive Index Calculator
dn/dλ vs Wavelength
dn/dλ Calculator
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Optical Properties
Thermal Properties
| TCE -30/70°C (10-6/K) | 4.8 |
|---|---|
| TCE 100/300°C (10-6/K) | 7.1 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[8.58 \times 10^{-6} + 2(1.74 \times 10^{-8})\,\Delta T + 3(-7.72 \times 10^{-11})\,\Delta T^2 + \frac{5.67 \times 10^{-7} + 2(3.44 \times 10^{-10})\,\Delta T}{\lambda - 0.221}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 1 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| BAM5 | Ohara | 1.607289 | 49.188575 | |
| BAF5 | Hoya | 1.607292 | 49.336899 | |
| LAF50 | Hoya | 1.60199 | 50.21 | |
| KZFS6 | Schott | 1.591965 | 48.509579 | |
| C05-50 | Corning | 1.605004 | 50.419332 | |
| C0550 | Corning | 1.605004 | 50.419332 | |
| BAF6 | Hoya | 1.589003 | 48.543984 | |
| BAFN6 | Schott | 1.589 | 48.45 | |
| KZFSN9 | Schott | 1.598557 | 46.903842 | |
| SSKN8 | Schott | 1.61772 | 49.771451 |