BAC2 by Hoya

Obsolete Unknown Environmentally Dangerous

BAC2 by Hoya is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.539961 and a Vd of 59.721586. It has dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.334–2.325 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.334–2.325 µm
Abbe Number Calculator
Transmission vs Wavelength

No transmission data available.

Transmission Calculator
Valid wavelength range: 0.334–2.325 µm
Optical Properties
Refractive Index (nd) 1.539961
Abbe Number (Vd) 59.721586
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{2.33668 - 0.00850037\,\lambda^2 + 0.0125446\,\lambda^{-2} + 0.000141709\,\lambda^{-4} + 9.33908 \times 10^{-6}\,\lambda^{-6} - 3.19755 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) —
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) —
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance —
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
H-BAK2 CDGM 1.53996 59.724182
N-BAK2 Schott 1.53996 59.71
BAK2 Schott 1.53996 59.708588
BAK2 Sumita 1.53996 59.7
B39-59 Corning 1.539505 59.712433
S-BAL12 Ohara 1.539956 59.462478
BAL12 Ohara 1.539955 59.454008
H-BAK1 CDGM 1.53028 60.466139
H-K11 CDGM 1.52638 60.15737
ZK1 Schott 1.533149 57.980912
Similar Glasses (Hoya)
Glass Manufacturer nd Vd Compare
BACL1 Hoya 1.526417 60.113677
ZNC1 Hoya 1.533149 58.063515
C5 Hoya 1.522488 59.447258
C40 Hoya 1.523 60.4016
C12 Hoya 1.523073 58.640203
BAC5 Hoya 1.556708 58.562365
BSC6 Hoya 1.531128 62.075664
BACL3 Hoya 1.518351 60.396486
C3 Hoya 1.518234 58.96082
E-C3 Hoya 1.51823 58.96
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