L-BAL43 by Ohara
Standard
Rare
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) | 1.585729 |
|---|---|
| Abbe Number (Vd) | 59.69698 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.365015 — 2.32542 µm |
$$n(\lambda) = \sqrt{1 + \frac{1.04745\,\lambda^2}{\lambda^2 - 0.0056321} + \frac{0.428453\,\lambda^2}{\lambda^2 - 0.0188321} + \frac{1.14111\,\lambda^2}{\lambda^2 - 114.197}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 7.3 |
|---|---|
| TCE 100/300°C (10-6/K) | — |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[3.03 \times 10^{-6} + 2(9.62 \times 10^{-9})\,\Delta T + 3(-1.13 \times 10^{-11})\,\Delta T^2 + \frac{4.9 \times 10^{-7} + 2(5.73 \times 10^{-10})\,\Delta T}{\lambda - 0.199}\right]
\Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.05 |
|---|---|
| Relative Cost | 1.7 |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 3 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 51 |
| Alkali Resistance | — |
| Phosphate Resistance | 2 |
Notes
Low Softening Temperature
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| CSK12 | Sumita | 1.5865 | 59.6 | |
| K-SKLD120 | Sumita | 1.5868 | 59.8 | |
| D-ZK2L-25 | CDGM | 1.58625 | 59.524868 | |
| D-ZK2L | CDGM | 1.587 | 59.600321 | |
| K-CSK120 | Sumita | 1.587 | 59.6 | |
| CSK120 | Sumita | 1.587 | 59.6 | |
| P-SK57 | Schott | 1.587 | 59.6 | |
| P-SK57Q1 | Schott | 1.586 | 59.5 | |
| K-SKLD120(M) | Sumita | 1.58401 | 59.5 | |
| D-ZK2A | CDGM | 1.58313 | 59.539751 |
Similar Glasses (Ohara)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| L-BAL42P | Ohara | 1.58593 | 59.248294 | |
| L-BAL42 | Ohara | 1.583126 | 59.385694 | |
| S-BAL42 | Ohara | 1.583126 | 59.374673 | |
| BAL42 | Ohara | 1.583126 | 59.373789 | |
| S-BAL35R | Ohara | 1.58913 | 60.960312 | |
| S-BAL35 | Ohara | 1.58913 | 61.135024 | |
| L-BAL35 | Ohara | 1.58913 | 61.152601 | |
| BAL35 | Ohara | 1.58913 | 61.182174 | |
| L-BAL35P | Ohara | 1.59208 | 60.993997 | |
| BAL35Y | Ohara | 1.58913 | 61.233033 |