S-BAL14 by Ohara
Standard
Common
Environmentally Friendly
S-BAL14 by Ohara is a standard optical glass with a common melt frequency. It transmits from 0.33 to 2.40 µm with an nd of 1.568832 and a Vd of 56.363897. It has medium thermal expansion (CTE of 8.0×10⁻⁶/K), good chemical resistance, and low relative cost.
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) | 1.568832 |
|---|---|
| Abbe Number (Vd) | 56.363897 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.365015 — 2.32542 µm |
$$n(\lambda) = \sqrt{1 + \frac{1.27554\,\lambda^2}{\lambda^2 - 0.00749692} + \frac{0.146083\,\lambda^2}{\lambda^2 - 0.0310422} + \frac{1.16755\,\lambda^2}{\lambda^2 - 128.947}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 8.0 |
|---|---|
| TCE 100/300°C (10-6/K) | — |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-5.94 \times 10^{-7} + 2(1.27 \times 10^{-8})\,\Delta T + 3(-3.65 \times 10^{-11})\,\Delta T^2 + \frac{3.93 \times 10^{-7} + 2(3.72 \times 10^{-10})\,\Delta T}{\lambda - 0.26}\right]
\Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Chemical Resistance
| Climatic Resistance | 2 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 1 |
| Alkali Resistance | — |
| Phosphate Resistance | 2 |
Notes
Recommended
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| BAK4 | Schott | 1.56883 | 56.130661 | |
| H-BAK7A | CDGM | 1.568828 | 56.127804 | |
| B69-56 | Corning | 1.568797 | 56.044859 | |
| H-BAK7GT | CDGM | 1.56883 | 56.041308 | |
| H-BAK7 | CDGM | 1.56883 | 56.041308 | |
| BAC4 | Hoya | 1.56883 | 56.04 | |
| BAK4 | Sumita | 1.56883 | 56.0 | |
| N-BAK4HT | Schott | 1.56883 | 55.98 | |
| N-BAK4 | Schott | 1.56883 | 55.98 | |
| BAC6 | Hoya | 1.574441 | 56.357089 |
Similar Glasses (Ohara)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| BAL14 | Ohara | 1.568832 | 56.339266 | |
| S-BAL11 | Ohara | 1.572501 | 57.74298 | |
| BAL11 | Ohara | 1.572501 | 57.760854 | |
| BAL15Y | Ohara | 1.556711 | 58.679177 | |
| BAL15 | Ohara | 1.556711 | 58.689461 | |
| BAL3 | Ohara | 1.571351 | 52.968158 | |
| S-BAL3 | Ohara | 1.571351 | 52.952106 | |
| BAL42 | Ohara | 1.583126 | 59.373789 | |
| S-BAL42 | Ohara | 1.583126 | 59.374673 | |
| L-BAL42 | Ohara | 1.583126 | 59.385694 |