K-PG325 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) | 1.5067 |
|---|---|
| Abbe Number (Vd) | 70.5 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36 — 1.55 µm |
$$n(\lambda) = \sqrt{2.24335 - 0.00704432\,\lambda^2 + 0.00959327\,\lambda^{-2} + 0.000193646\,\lambda^{-4} - 9.85855 \times 10^{-6}\,\lambda^{-6} + 6.10888 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 14.3 |
|---|---|
| TCE 100/300°C (10-6/K) | 16.5 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-1.86 \times 10^{-5} + 2(-3.2 \times 10^{-9})\,\Delta T + 3(-2.53 \times 10^{-11})\,\Delta T^2 + \frac{4.98 \times 10^{-7} + 2(8.02 \times 10^{-10})\,\Delta T}{\lambda - 0.172}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.0 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 5 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| PCS1 | Hoya | 1.517284 | 69.67869 | |
| APL1 | Ohara | 1.517277 | 69.563209 | |
| S-APL1 | Ohara | 1.517277 | 69.563209 | |
| S-APL | Ohara | 1.517277 | 69.56319 | |
| PK50 | Schott | 1.52054 | 69.712402 | |
| D-PK3-25 | CDGM | 1.52368 | 70.274839 | |
| D-PK3 | CDGM | 1.525 | 70.370578 | |
| H-QK3L | CDGM | 1.48749 | 70.440487 | |
| H-QK3LGTI | CDGM | 1.48749 | 70.440487 | |
| D-QK3L | CDGM | 1.48749 | 70.440487 |
Similar Glasses (Sumita)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| K-PG325(M) | Sumita | 1.50506 | 70.4 | |
| K-PMK30(M) | Sumita | 1.52002 | 70.2 | |
| K-PMK30 | Sumita | 1.525 | 70.4 | |
| FK5 | Sumita | 1.48749 | 70.4 | |
| K-FK5 | Sumita | 1.48749 | 70.4 | |
| BK10 | Sumita | 1.49782 | 67.0 | |
| BK4 | Sumita | 1.50048 | 66.0 | |
| BK3 | Sumita | 1.49831 | 65.1 | |
| K-PSK500(M) | Sumita | 1.55 | 71.9 | |
| K-PSK500 | Sumita | 1.55215 | 72.0 |