PBL2 by Ohara

Obsolete Unknown Environmentally Dangerous

PBL2 by Ohara is an obsolete optical glass. It transmits from 0.31 to 0.70 µm with an nd of 1.54072 and a Vd of 47.23368. It has medium thermal expansion (CTE of 8.8×10⁻⁶/K), excellent chemical resistance, and dangerous environmental properties.

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: 0.310–0.700 µm
Optical Properties
Refractive Index (nd) 1.54072
Abbe Number (Vd) 47.23368
Dispersion Formula Schott
Wavelength Range 0.3 — 2.4 µm
$$n(\lambda) = \sqrt{2.33022 - 0.0085475\,\lambda^2 + 0.0147886\,\lambda^{-2} + 0.000480171\,\lambda^{-4} - 1.92216 \times 10^{-5}\,\lambda^{-6} + 2.171 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 8.8
TCE 100/300°C (10-6/K) 10.4
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) 2.86
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 1
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
H-QF8 CDGM 1.54072 47.230007
E-FEL2 Hoya 1.54072 47.2
LLF2 Sumita 1.54072 47.2
FEL2 Hoya 1.540718 47.198247
QF8 CDGM 1.540718 47.198243
LLF2 Schott 1.540719 47.171344
QF70GFI CDGM 1.547 48.161896
LLF8 Sumita 1.53256 46.0
LLF1 Sumita 1.54814 45.9
LLF1HTi Schott 1.54815 45.9
Similar Glasses (Ohara)
Glass Manufacturer nd Vd Compare
S-TIL2 Ohara 1.54072 47.227127
FTM8 Ohara 1.532565 45.914102
S-TIL1 Ohara 1.548141 45.784277
PBL1 Ohara 1.548141 45.781144
PBL1Y Ohara 1.548141 45.733282
PBL7 Ohara 1.548689 45.555746
S-TIL6 Ohara 1.531717 48.840718
PBL6 Ohara 1.531717 48.904553
PBL6Y Ohara 1.531717 48.956017
SSL2 Ohara 1.529441 51.722557
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