BAFD15 by Hoya

Obsolete Unknown Environmentally Dangerous
Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.25–1.55 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.25–1.55 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.350–1.550 µm
Optical Properties
Refractive Index (nd) 1.701999
Abbe Number (Vd) 40.195943
Dispersion Formula Schott
Wavelength Range 0.25 — 1.55 µm
$$n(\lambda) = \sqrt{2.82055 - 0.0107898\,\lambda^2 + 0.0262163\,\lambda^{-2} + 0.000340587\,\lambda^{-4} + 4.6765 \times 10^{-5}\,\lambda^{-6} + 6.60304 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 8.0
TCE 100/300°C (10-6/K) 98.0
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[4.82134 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 2.99
Relative Cost 4.5
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 1
Stain Resistance 1
Acid Resistance 1
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd
BAH71 Ohara 1.701998 40.097173
BASF52 Schott 1.70181 41.010234
BASF64A Schott 1.704 39.384429
N-BASF64 Schott 1.704 39.38
BASF7 Sumita 1.70154 41.1
D01-41 Corning 1.701805 41.110216
H-ZBAF20 CDGM 1.70154 41.148468
BAH77 Ohara 1.701539 41.21001
S-BAH27 Ohara 1.701536 41.23944
BAH27 Ohara 1.701536 41.242277
Similar Glasses (Hoya)
Glass Manufacturer nd Vd
BAFD7 Hoya 1.70154 41.15
LAFL6 Hoya 1.72 42.016239
ADF8 Hoya 1.686498 42.863902
LAFL4 Hoya 1.712704 43.295113
BAFD8 Hoya 1.72342 37.99
MP-LAF81 Hoya 1.73077 40.5
M-LAF81 Hoya 1.73077 40.5
BAF20 Hoya 1.685777 43.901833
ADF405 Hoya 1.6765 37.477902
LAFL5 Hoya 1.719998 43.903303
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