PBH71 by Ohara

Obsolete Unknown Environmentally Dangerous
Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.3–2.4 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.3–2.4 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.370–2.400 µm
Optical Properties
Refractive Index (nd) 1.922864
Abbe Number (Vd) 21.288699
Dispersion Formula Sellmeier
Wavelength Range 0.3 — 2.4 µm
$$n(\lambda) = \sqrt{1 + \frac{1.9704\,\lambda^2}{\lambda^2 - 0.015578} + \frac{0.52033\,\lambda^2}{\lambda^2 - 0.0632642} + \frac{1.30696\,\lambda^2}{\lambda^2 - 142.045}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 8.9
TCE 100/300°C (10-6/K) 10.1
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[1.76 \times 10^{-5} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) 6.05
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance —
Stain Resistance —
Acid Resistance 53
Alkali Resistance —
Phosphate Resistance 4
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd
REALVIEW_1.9_LIGHTWEIGHT Schott 1.922002 21.44
FDS1 Hoya 1.922859 20.883457
SF66 Schott 1.92286 20.88
E-FDS1-W Hoya 1.92286 20.88
M-FDS1 Hoya 1.92286 20.88
E-FDS1 Hoya 1.92286 20.88
N-SF66 Schott 1.92286 20.88
MP-FDS1 Hoya 1.92286 20.88
H-ZF62 CDGM 1.92286 20.879915
H-ZF62GT CDGM 1.92286 20.879915
Similar Glasses (Ohara)
Glass Manufacturer nd Vd
PBH21 Ohara 1.922861 20.884172
PBH72 Ohara 1.915356 21.171926
S-NPH2 Ohara 1.92286 18.896912
S-NPH4 Ohara 1.89286 20.36181
L-NBH54 Ohara 1.902 25.101413
S-TIH57 Ohara 1.963 24.1144
S-NPH3 Ohara 1.95906 17.471252
S-NPH5 Ohara 1.858955 22.728736
S-NBH56 Ohara 1.854779 24.79898
L-LAH86 Ohara 1.902699 31.00532
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