NBFD10 by Hoya

Preferred Very Common Environmentally Dangerous

NBFD10 by Hoya is a preferred optical glass with a very common melt frequency. It transmits from 0.35 to 2.50 µm with an nd of 1.834 and a Vd of 37.34. It has low thermal expansion (CTE of 5.6×10⁻⁶/K), average chemical resistance, and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.36501–1.5296 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.36501–1.5296 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.350–2.500 µm
Optical Properties
Refractive Index (nd) 1.834
Abbe Number (Vd) 37.34
Dispersion Formula Schott
Wavelength Range 0.36501 — 1.5296 µm
$$n(\lambda) = \sqrt{3.26156 - 0.0145429\,\lambda^2 + 0.0334707\,\lambda^{-2} + 0.00122665\,\lambda^{-4} - 2.53918 \times 10^{-5}\,\lambda^{-6} + 5.59717 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 5.6
TCE 100/300°C (10-6/K) 7.3
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[7.08 \times 10^{-6} + 2(1.05 \times 10^{-8})\,\Delta T + 3(-9.04 \times 10^{-11})\,\Delta T^2 + \frac{1.33 \times 10^{-6} + 2(1.07 \times 10^{-9})\,\Delta T}{\lambda - 0.00338}\right] \Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
Density (g/cm³) 4.57
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 1
Stain Resistance 3
Acid Resistance 3
Alkali Resistance —
Phosphate Resistance —
Notes

Recommended glass type

Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
K-LaSFn14 Sumita 1.834 37.3
N-LASF40 Schott 1.83404 37.3
H-ZLAF53BGT CDGM 1.834 37.210555
H-ZLAF53B CDGM 1.834 37.210555
S-LAH60V Ohara 1.833999 37.206855
LASFN14 Sumita 1.834 37.2
S-LAH60MQ Ohara 1.833999 37.172099
LAH60 Ohara 1.834 37.166863
S-LAH60 Ohara 1.834 37.160487
LASF14A Schott 1.822226 37.454652
Similar Glasses (Hoya)
Glass Manufacturer nd Vd Compare
M-NBFD10 Hoya 1.83441 37.29
MP-NBFD10-20 Hoya 1.83461 37.29
NBFD40 Hoya 1.829 36.496616
M-NBFD82 Hoya 1.814741 37.027807
TAFD13 Hoya 1.855396 36.557002
MC-TAFD315 Hoya 1.85135 40.07
M-TAFD315 Hoya 1.85135 40.07
M-TAFD305 Hoya 1.85135 40.1
MP-TAFD305 Hoya 1.85135 40.1
MC-TAFD305 Hoya 1.85135 40.1
Compare Glasses
    Compare Selected