K-PMK30 by Sumita
Standard
Medium
Precision Molding
Environmentally Friendly
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) | 1.525 |
|---|---|
| Abbe Number (Vd) | 70.4 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36 — 1.55 µm |
$$n(\lambda) = \sqrt{2.29842 - 0.00989779\,\lambda^2 + 0.0104544\,\lambda^{-2} - 1.17622 \times 10^{-5}\,\lambda^{-4} + 2.22068 \times 10^{-5}\,\lambda^{-6} - 1.22127 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 8.3 |
|---|---|
| TCE 100/300°C (10-6/K) | 8.7 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[3.49 \times 10^{-7} + 2(1.51 \times 10^{-8})\,\Delta T + 3(-7.35 \times 10^{-11})\,\Delta T^2 + \frac{3.65 \times 10^{-7} + 2(5.07 \times 10^{-10})\,\Delta T}{\lambda - 0.174}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 2.6 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 2 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 1 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| D-PK3 | CDGM | 1.525 | 70.370578 | |
| D-PK3-25 | CDGM | 1.52368 | 70.274839 | |
| PK50 | Schott | 1.52054 | 69.712402 | |
| PCS1 | Hoya | 1.517284 | 69.67869 | |
| S-APL1 | Ohara | 1.517277 | 69.563209 | |
| APL1 | Ohara | 1.517277 | 69.563209 | |
| S-APL | Ohara | 1.517277 | 69.56319 | |
| QUARTZ | Generic Birefringent | 1.544296 | 70.132045 | |
| S-FPM5 | Ohara | 1.552 | 70.697068 | |
| B42-73 | Corning | 1.542198 | 73.473057 |
Similar Glasses (Sumita)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| K-PMK30(M) | Sumita | 1.52002 | 70.2 | |
| K-PG325 | Sumita | 1.5067 | 70.5 | |
| K-PG325(M) | Sumita | 1.50506 | 70.4 | |
| K-PSK500(M) | Sumita | 1.55 | 71.9 | |
| K-PSK500 | Sumita | 1.55215 | 72.0 | |
| K-PMK155(M) | Sumita | 1.55471 | 68.0 | |
| K-PMK155 | Sumita | 1.5582 | 68.2 | |
| BK10 | Sumita | 1.49782 | 67.0 | |
| FK5 | Sumita | 1.48749 | 70.4 | |
| K-FK5 | Sumita | 1.48749 | 70.4 |