PBM8 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: 0.320–0.900 µm
Optical Properties
Refractive Index (nd) 1.595508
Abbe Number (Vd) 39.213424
Dispersion Formula Schott
Wavelength Range 0.3 — 2.4 µm
$$n(\lambda) = \sqrt{2.48429 - 0.00826298\,\lambda^2 + 0.0204129\,\lambda^{-2} + 0.000596547\,\lambda^{-4} - 4.99918 \times 10^{-6}\,\lambda^{-6} + 2.80602 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 8.5
TCE 100/300°C (10-6/K) 9.6
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[3.609 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.36
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance —
Stain Resistance —
Acid Resistance 1
Alkali Resistance —
Phosphate Resistance 2
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd
E-F8 Hoya 1.59551 39.22
F8 Hoya 1.595514 39.221686
H-QF14 CDGM 1.59551 39.222748
F8 Sumita 1.59551 39.2
F8 Schott 1.59551 39.179444
F8HT Schott 1.59551 39.179444
LF5G19 Schott 1.59655 39.89
F14HT Schott 1.601389 38.266237
F14 Schott 1.601401 38.231923
C04-38 Corning 1.603499 38.110538
Similar Glasses (Ohara)
Glass Manufacturer nd Vd
S-TIM8 Ohara 1.595509 39.242273
PBM8Y Ohara 1.595509 39.260208
PBM18Y Ohara 1.595509 38.767114
S-TIM5 Ohara 1.60342 38.027347
PBM5 Ohara 1.60342 38.012915
BAM23 Ohara 1.607167 40.26316
PBL22 Ohara 1.589206 41.07921
S-TIL25 Ohara 1.581439 40.747566
PBL25 Ohara 1.581439 40.753351
PBL25Y Ohara 1.581439 40.768047
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