BAF7 by CDGM

Obsolete Rare Environmentally Dangerous
Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.365–0.7065 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.365–0.7065 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.330–2.400 µm
Optical Properties
Refractive Index (nd) 1.614131
Abbe Number (Vd) 40.025731
Dispersion Formula Schott
Wavelength Range 0.365 — 0.7065 µm
$$n(\lambda) = \sqrt{2.54364 - 0.00869252\,\lambda^2 + 0.0200492\,\lambda^{-2} + 0.000897954\,\lambda^{-4} - 4.97345 \times 10^{-5}\,\lambda^{-6} + 5.3556 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 8.3
TCE 100/300°C (10-6/K) 9.4
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) 3.56
Relative Cost 4.9
Mechanical Properties
Young's Modulus (GPa) 62.17
Poisson's Ratio 0.237
Knoop Hardness (kgf/mm²) 416.0
Chemical Resistance
Climatic Resistance 1
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd
BASF3 Sumita 1.60717 40.2
BAM23 Ohara 1.607167 40.26316
BAFD3 Hoya 1.607171 40.359687
S-NBM52 Ohara 1.622049 41.079324
BAM21 Ohara 1.626059 39.215631
BASF1 Sumita 1.62606 39.1
GEO2 Generic IR 1.608459 41.728763
BAFD1 Hoya 1.626057 39.085725
BASF1 Schott 1.626061 38.962861
PBM9 Ohara 1.620451 38.119955
Similar Glasses (CDGM)
Glass Manufacturer nd Vd
H-BAF7 CDGM 1.61413 39.985319
H-BAF8 CDGM 1.62604 39.071631
F1 CDGM 1.603417 38.01487
H-F1 CDGM 1.60342 38.010877
H-QF14 CDGM 1.59551 39.222748
H-F2 CDGM 1.61293 37.004441
F2 CDGM 1.612929 36.986002
H-F3 CDGM 1.61659 36.651688
F3 CDGM 1.616592 36.627394
F4GTI CDGM 1.62005 36.430327
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