NBFD14 by Hoya

Obsolete Unknown Environmentally Dangerous

NBFD14 by Hoya is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.801699 and a Vd of 44.321602. It has 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

No transmission data available.

Transmission Calculator
Valid wavelength range: 0.334–2.325 µm
Optical Properties
Refractive Index (nd) 1.801699
Abbe Number (Vd) 44.321602
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{3.16354 - 0.014237\,\lambda^2 + 0.0281711\,\lambda^{-2} + 0.000744237\,\lambda^{-4} - 2.35703 \times 10^{-5}\,\lambda^{-6} + 3.1693 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) —
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) —
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance —
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
H-ZLAF1 CDGM 1.80166 44.263459
K-VC100 Sumita 1.804 43.6
K-VC100(M) Sumita 1.79916 43.5
D-ZLAF50-25 CDGM 1.80225 45.452746
D-ZLAF50 CDGM 1.80337 45.491557
LASFN19 Sumita 1.795 45.2
E00-46 Corning 1.800001 45.608618
LAH67 Ohara 1.794997 45.293967
S-LAH67 Ohara 1.794997 45.293967
D96-43 Corning 1.796195 43.217783
Similar Glasses (Hoya)
Glass Manufacturer nd Vd Compare
M-TAF31 Hoya 1.80139 45.45
MP-TAF31-15 Hoya 1.80154 45.47
MC-TAF31-15 Hoya 1.80154 45.47
TAF2 Hoya 1.7945 45.39
TAFD10 Hoya 1.815502 44.5379
NBFD12 Hoya 1.7995 42.34
NBFD11 Hoya 1.7859 43.94
TAF3D Hoya 1.8042 46.5
TAF3 Hoya 1.8042 46.5
NBFD1 Hoya 1.789004 42.757634
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