NBFD6 by Hoya

Obsolete Unknown Environmentally Dangerous

NBFD6 by Hoya is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.756702 and a Vd of 36.345258. 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) 1.756702
Abbe Number (Vd) 36.345258
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{2.9882 - 0.00711928\,\lambda^2 + 0.033239\,\lambda^{-2} + 0.000204853\,\lambda^{-4} + 9.22526 \times 10^{-5}\,\lambda^{-6} + 2.44433 \times 10^{-7}\,\lambda^{-8}}$$
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-LAFL5 CDGM 1.75367 37.491665
S-NBH51 Ohara 1.749504 35.33248
S-NBH59 Ohara 1.766342 35.82343
S-LAM7 Ohara 1.749497 35.283397
LAM7 Ohara 1.749497 35.278026
LAF70 Sumita 1.7495 35.0
H-LAF4GT CDGM 1.7495 34.989266
H-LAF4 CDGM 1.7495 34.989266
LAFN7 Schott 1.7495 34.95
N-LAF7 Schott 1.7495 34.82
Similar Glasses (Hoya)
Glass Manufacturer nd Vd Compare
LAF7 Hoya 1.749497 35.042695
E-LAF7 Hoya 1.7495 35.04
NBFD7 Hoya 1.782999 36.06621
NBFD5 Hoya 1.762001 40.263213
NBFD9 Hoya 1.756898 31.798532
BAFD8 Hoya 1.72342 37.99
ADF505 Hoya 1.739996 31.655919
MP-LAF81 Hoya 1.73077 40.5
M-LAF81 Hoya 1.73077 40.5
NBFD32 Hoya 1.73037 32.23
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