FDS30 by Hoya
Obsolete
Unknown
Environmentally Dangerous
FDS30 by Hoya is an obsolete optical glass. It transmits from 0.37 to 1.55 µm with an nd of 1.784701 and a Vd of 26.102957. It has medium thermal expansion (CTE of 9.0×10⁻⁶/K), excellent chemical resistance, moderate relative cost, and dangerous environmental properties.
Refractive Index vs Wavelength
Refractive Index Calculator
dn/dλ vs Wavelength
dn/dλ Calculator
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Optical Properties
Thermal Properties
| TCE -30/70°C (10-6/K) | 9.0 |
|---|---|
| TCE 100/300°C (10-6/K) | — |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-9.72693 \times 10^{-7} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | 1 |
| Acid Resistance | 1 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| N-SF56 | Schott | 1.7847 | 26.1 | |
| SF56A | Schott | 1.7847 | 26.08 | |
| SFL56 | Schott | 1.7847 | 26.078312 | |
| ZF51 | CDGM | 1.784701 | 26.075871 | |
| SFS3 | Sumita | 1.7847 | 26.2 | |
| PBH23W | Ohara | 1.784702 | 26.216753 | |
| PBH23 | Ohara | 1.784702 | 26.216753 | |
| S-TIH23 | Ohara | 1.784696 | 26.291221 | |
| TIH23 | Ohara | 1.784696 | 26.29817 | |
| SFLD11 | Sumita | 1.78472 | 25.9 |
Similar Glasses (Hoya)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| FDS3 | Hoya | 1.7847 | 26.057653 | |
| FD110 | Hoya | 1.78472 | 25.72 | |
| FD11 | Hoya | 1.784715 | 25.704276 | |
| FD6 | Hoya | 1.805184 | 25.465194 | |
| FD60 | Hoya | 1.80518 | 25.46 | |
| FD60-W | Hoya | 1.80518 | 25.46 | |
| FD14 | Hoya | 1.761823 | 26.552048 | |
| FD140 | Hoya | 1.76182 | 26.61 | |
| FDS5 | Hoya | 1.761804 | 26.914901 | |
| NBFD29 | Hoya | 1.77047 | 29.74 |