BACD12 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: 0.290–0.700 µm
Optical Properties
Refractive Index (nd) 1.583129
Abbe Number (Vd) 59.459639
Dispersion Formula Schott
Wavelength Range 0.25 — 1.55 µm
$$n(\lambda) = \sqrt{2.47213 - 0.0117653\,\lambda^2 + 0.0107068\,\lambda^{-2} + 0.00120387\,\lambda^{-4} - 0.000140429\,\lambda^{-6} + 7.4543 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) 74.0
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) 3.27
Relative Cost 3.3
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 2
Stain Resistance 4
Acid Resistance 3
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd
H-ZK2 CDGM 1.58313 59.460082
SK12 Schott 1.583131 59.448822
L-BAL42 Ohara 1.583126 59.385694
D-ZK2 CDGM 1.58313 59.381686
D-ZK2A CDGM 1.58313 59.539751
S-BAL42 Ohara 1.583126 59.374673
BAL42 Ohara 1.583126 59.373789
D-ZK2A-25 CDGM 1.58229 59.453631
K-SKLD120(M) Sumita 1.58401 59.5
SK12 Sumita 1.58313 59.3
Similar Glasses (Hoya)
Glass Manufacturer nd Vd
MP-BACD12 Hoya 1.58313 59.46
M-BACD12 Hoya 1.58313 59.46
MC-BACD12 Hoya 1.58313 59.46
BACD13 Hoya 1.59181 58.308789
FCD600 Hoya 1.5941 60.47
MC-BACD5N Hoya 1.58913 61.25
M-BACD5N Hoya 1.58913 61.25
MP-BACD5N Hoya 1.58913 61.25
BACD5 Hoya 1.58913 61.25
BAC1 Hoya 1.572497 57.488684
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