K-PG395(M) by Sumita
Obsolete
Very Rare
Environmentally Friendly
K-PG395(M) 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 1.65296 and a Vd of 36.8. It has high thermal expansion (CTE of 12.4×10⁻⁶/K) and good 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) | 12.4 |
|---|---|
| TCE 100/300°C (10-6/K) | 15.9 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-1.15 \times 10^{-5} + 2(1.65 \times 10^{-9})\,\Delta T + 3(-6.23 \times 10^{-11})\,\Delta T^2 + \frac{1.13 \times 10^{-6} + 2(1.19 \times 10^{-9})\,\Delta T}{\lambda - 0.255}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 3 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| BASF56 | Schott | 1.657149 | 36.735021 | |
| ATF2 | Hoya | 1.65052 | 38.036939 | |
| BAFD4 | Hoya | 1.651278 | 38.312578 | |
| N-BASF2 | Schott | 1.66446 | 36.0 | |
| BAFD2 | Hoya | 1.664457 | 35.887705 | |
| BASF2 | Schott | 1.66446 | 35.829357 | |
| BAH22 | Ohara | 1.664459 | 35.812757 | |
| H-ZBAF4 | CDGM | 1.66426 | 35.484251 | |
| BASF10 | Schott | 1.65016 | 39.148818 | |
| C51-39 | Corning | 1.650206 | 39.193419 |