BACED20 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: 0.330–0.700 µm
Optical Properties
Refractive Index (nd) 1.648498
Abbe Number (Vd) 53.03151
Dispersion Formula Schott
Wavelength Range 0.25 — 1.55 µm
$$n(\lambda) = \sqrt{2.66496 - 0.00895902\,\lambda^2 + 0.0187469\,\lambda^{-2} + 6.53623 \times 10^{-5}\,\lambda^{-4} + 3.79168 \times 10^{-5}\,\lambda^{-6} - 1.30416 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 7.5
TCE 100/300°C (10-6/K) 88.0
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[9.56145 \times 10^{-7} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.74
Relative Cost —
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
BSM71 Ohara 1.648497 53.035185
S-BSM71 Ohara 1.648498 53.023881
SSKN1 Sumita 1.6485 53.0
K-LaKn11 Sumita 1.6583 53.4
LAKN11 Sumita 1.6583 53.4
H-ZBAF3 CDGM 1.65691 51.12138
C58-51 Corning 1.658503 51.012014
SSKN5 Schott 1.65844 50.882921
N-SSK5 Schott 1.65844 50.88
S-BSM25 Ohara 1.658441 50.877554
Similar Glasses (Hoya)
Glass Manufacturer nd Vd
E-BACED20 Hoya 1.6485 53.03
LACL3 Hoya 1.664798 53.401295
M-PCD55AR Hoya 1.63858 55.18
MP-PCD55AR Hoya 1.63858 55.18
BACED5 Hoya 1.65844 50.86
LACL2 Hoya 1.650201 55.737216
BACD18 Hoya 1.63854 55.45
LACL4 Hoya 1.669603 51.65903
BACED2 Hoya 1.6223 53.11226
LACL1 Hoya 1.640851 56.835319
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