ADF8 by Hoya

Obsolete Unknown Environmentally Dangerous

ADF8 by Hoya is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.686498 and a Vd of 42.863902. 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) 1.686498
Abbe Number (Vd) 42.863902
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{2.77826 - 0.0139389\,\lambda^2 + 0.0225546\,\lambda^{-2} + 0.000673311\,\lambda^{-4} - 1.54763 \times 10^{-5}\,\lambda^{-6} + 3.07674 \times 10^{-6}\,\lambda^{-8}}$$
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
BAH54 Ohara 1.695 42.167111
S-BAH54 Ohara 1.695 42.167111
BAF50 Schott 1.682726 44.503507
K-BaFn1 Sumita 1.6825 44.5
BAFN1 Sumita 1.6825 44.5
ZBAF51 CDGM 1.682726 44.528543
IRG11 Generic IR 1.680932 44.434326
BAH27 Ohara 1.701536 41.242277
S-BAH27 Ohara 1.701536 41.23944
BAH77 Ohara 1.701539 41.21001
Similar Glasses (Hoya)
Glass Manufacturer nd Vd Compare
BAF20 Hoya 1.685777 43.901833
BAF22 Hoya 1.682496 44.671672
BAFD7 Hoya 1.70154 41.15
BAFD6 Hoya 1.66755 41.933458
BAF13 Hoya 1.668916 44.911265
BAFD15 Hoya 1.701999 40.195943
LAFL4 Hoya 1.712704 43.295113
LAFL6 Hoya 1.72 42.016239
LAFL5 Hoya 1.719998 43.903303
ATF4 Hoya 1.653757 44.723072
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