F14HT by Schott

Obsolete Unknown Environmentally Dangerous

F14HT by Schott is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.601389 and a Vd of 38.266237. It has medium thermal expansion (CTE of 7.9×10⁻⁶/K), excellent chemical resistance, and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.334–2.325 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.334–2.325 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.334–2.325 µm
Optical Properties
Refractive Index (nd) 1.601389
Abbe Number (Vd) 38.266237
Dispersion Formula Sellmeier
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{1 + \frac{1.33063\,\lambda^2}{\lambda^2 - 0.0100002} + \frac{0.16997\,\lambda^2}{\lambda^2 - 0.0474133} + \frac{0.919093\,\lambda^2}{\lambda^2 - 109.672}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 7.9
TCE 100/300°C (10-6/K) 9.0
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.44
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 1
Stain Resistance 0
Acid Resistance 1
Alkali Resistance 2
Phosphate Resistance 1
Notes

old, High UV Transmission; glass data moved from former "I_LINE" catalog

Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
C04-38 Corning 1.603499 38.110538
S-TIM5 Ohara 1.60342 38.027347
F5 Hoya 1.603417 38.014872
F1 CDGM 1.603417 38.01487
PBM5 Ohara 1.60342 38.012915
H-F1 CDGM 1.60342 38.010877
E-F5 Hoya 1.60342 38.01
F5 Sumita 1.60342 38.0
F15 Hoya 1.605651 37.899711
PBM18Y Ohara 1.595509 38.767114
Similar Glasses (Schott)
Glass Manufacturer nd Vd Compare
F14 Schott 1.601401 38.231923
F5 Schott 1.60342 38.03
F15 Schott 1.605651 37.830856
F8HT Schott 1.59551 39.179444
F8 Schott 1.59551 39.179444
LF5G19 Schott 1.59655 39.89
F3 Schott 1.612931 37.038954
F9 Schott 1.620451 38.080601
F4 Schott 1.616592 36.628072
TIFN5 Schott 1.593555 35.514529
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