PBL7 by Ohara

Obsolete Unknown Environmentally Dangerous

PBL7 by Ohara is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.548689 and a Vd of 45.555746. 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) 1.548689
Abbe Number (Vd) 45.555746
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{2.35293 - 0.00890819\,\lambda^2 + 0.015049\,\lambda^{-2} + 0.000700289\,\lambda^{-4} - 4.75189 \times 10^{-5}\,\lambda^{-6} + 3.89956 \times 10^{-6}\,\lambda^{-8}}$$
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
FEL7 Hoya 1.54883 45.439785
LLF7 Schott 1.548831 45.40834
LLF7 Sumita 1.54869 45.4
B48-46 Corning 1.548098 45.718533
LLF1 Schott 1.54814 45.75
E-FEL1 Hoya 1.54814 45.82
H-QF1 CDGM 1.54814 45.820011
FEL1 Hoya 1.548136 45.822169
N-LLF1 Schott 1.54814 45.851572
QF1 CDGM 1.5481 45.886233
Similar Glasses (Ohara)
Glass Manufacturer nd Vd Compare
PBL1Y Ohara 1.548141 45.733282
PBL1 Ohara 1.548141 45.781144
S-TIL1 Ohara 1.548141 45.784277
S-TIL2 Ohara 1.54072 47.227127
PBL2 Ohara 1.54072 47.23368
FTM8 Ohara 1.532565 45.914102
PBL26Y Ohara 1.567322 42.855569
PBL26 Ohara 1.567322 42.831708
S-TIL26 Ohara 1.567322 42.817076
S-TIL6 Ohara 1.531717 48.840718
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