PBM22 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: 0.330–0.700 µm
Optical Properties
Refractive Index (nd) 1.647689
Abbe Number (Vd) 33.802937
Dispersion Formula Schott
Wavelength Range 0.3 — 2.4 µm
$$n(\lambda) = \sqrt{2.63603 - 0.00894509\,\lambda^2 + 0.0252281\,\lambda^{-2} + 0.00111209\,\lambda^{-4} - 3.78874 \times 10^{-5}\,\lambda^{-6} + 6.3761 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 8.8
TCE 100/300°C (10-6/K) 9.8
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[5.749 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.85
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance —
Stain Resistance —
Acid Resistance 2
Alkali Resistance —
Phosphate Resistance 2
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd
N-SF2 Schott 1.64769 33.82
ZF1 CDGM 1.647693 33.836872
FD2 Hoya 1.647693 33.836872
E-FD2 Hoya 1.64769 33.84
H-ZF1 CDGM 1.64769 33.840317
SF2 Schott 1.64769 33.85
SF12 Sumita 1.64831 33.8
FD12 Hoya 1.648308 33.793909
H-ZF1A CDGM 1.64769 33.887993
SF12 Schott 1.64831 33.841187
Similar Glasses (Ohara)
Glass Manufacturer nd Vd
S-TIM22 Ohara 1.647689 33.792803
S-TIM27 Ohara 1.639799 34.466422
PBM27 Ohara 1.639799 34.477127
PBM6 Ohara 1.636358 35.376536
S-TIM6 Ohara 1.636358 35.391923
S-TIM39 Ohara 1.6668 33.054985
PBM39 Ohara 1.666799 33.046816
BAH22 Ohara 1.664459 35.812757
S-TIM1 Ohara 1.625882 35.699614
PBM1 Ohara 1.625882 35.700668
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