BAC1 by Hoya

Obsolete Unknown Environmentally Dangerous

BAC1 by Hoya is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.572497 and a Vd of 57.488684. 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) 1.572497
Abbe Number (Vd) 57.488684
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{2.43251 - 0.00829832\,\lambda^2 + 0.01461\,\lambda^{-2} + 1.53973 \times 10^{-7}\,\lambda^{-4} + 3.72758 \times 10^{-5}\,\lambda^{-6} - 1.76217 \times 10^{-6}\,\lambda^{-8}}$$
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-BAK8 CDGM 1.5725 57.486797
B72-57 Corning 1.572498 57.494511
BAK1 Sumita 1.5725 57.5
BAK1 Schott 1.5725 57.54931
N-BAK1 Schott 1.5725 57.55
S-BAL11 Ohara 1.572501 57.74298
BAL11 Ohara 1.572501 57.760854
BAK50 Schott 1.567736 57.990411
S-BAL14 Ohara 1.568832 56.363897
BAL14 Ohara 1.568832 56.339266
Similar Glasses (Hoya)
Glass Manufacturer nd Vd Compare
BAC6 Hoya 1.574441 56.357089
BAC4 Hoya 1.56883 56.04
BAC5 Hoya 1.556708 58.562365
BACD12 Hoya 1.583129 59.459639
M-BACD12 Hoya 1.58313 59.46
MC-BACD12 Hoya 1.58313 59.46
MP-BACD12 Hoya 1.58313 59.46
BACD13 Hoya 1.59181 58.308789
BACD11 Hoya 1.56384 60.83
BAFL4 Hoya 1.579572 53.705963
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