S-TIH6 by Ohara
Standard
Very Common
Environmentally Friendly
S-TIH6 by Ohara is a standard optical glass with a very common melt frequency. It transmits from 0.37 to 2.40 µm with an nd of 1.805181 and a Vd of 25.425363. It has medium thermal expansion (CTE of 8.9×10⁻⁶/K), excellent 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) | 1.805181 |
|---|---|
| Abbe Number (Vd) | 25.425363 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.404656 — 2.32542 µm |
$$n(\lambda) = \sqrt{1 + \frac{1.77228\,\lambda^2}{\lambda^2 - 0.0131183} + \frac{0.345691\,\lambda^2}{\lambda^2 - 0.061448} + \frac{2.40789\,\lambda^2}{\lambda^2 - 200.753}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 8.9 |
|---|---|
| TCE 100/300°C (10-6/K) | — |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-4.43 \times 10^{-6} + 2(1.06 \times 10^{-8})\,\Delta T + 3(-3.14 \times 10^{-11})\,\Delta T^2 + \frac{9.45 \times 10^{-7} + 2(1.14 \times 10^{-9})\,\Delta T}{\lambda - 0.303}\right]
\Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 1 |
| Alkali Resistance | — |
| Phosphate Resistance | 1 |
Notes
Recommended
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| SF6 | Schott | 1.80518 | 25.43 | |
| SF6HT | Schott | 1.80518 | 25.43 | |
| SFLD6 | Sumita | 1.80518 | 25.4 | |
| K-SFLD6 | Sumita | 1.80518 | 25.4 | |
| H-ZF7LA | CDGM | 1.80518 | 25.456256 | |
| H-ZF7LAGT | CDGM | 1.80518 | 25.456256 | |
| FD60 | Hoya | 1.80518 | 25.46 | |
| FD60-W | Hoya | 1.80518 | 25.46 | |
| SFL6 | Schott | 1.80518 | 25.39 | |
| FD6 | Hoya | 1.805184 | 25.465194 |
Similar Glasses (Ohara)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| TIH6 | Ohara | 1.805181 | 25.432057 | |
| PBH6W | Ohara | 1.805177 | 25.435012 | |
| PBH6 | Ohara | 1.805177 | 25.435012 | |
| S-NPH1 | Ohara | 1.808095 | 22.760817 | |
| S-NPH1W | Ohara | 1.808095 | 22.760817 | |
| TIH11 | Ohara | 1.784723 | 25.677885 | |
| S-TIH11 | Ohara | 1.784723 | 25.683446 | |
| PBH11W | Ohara | 1.784718 | 25.712726 | |
| PBH11 | Ohara | 1.784718 | 25.712726 | |
| PBH23W | Ohara | 1.784702 | 26.216753 |