LF5G15 by Schott

Obsolete Unknown Radiation Resistant Environmentally Dangerous

LF5G15 by Schott is an obsolete optical glass. It transmits from 0.39 to 2.50 µm with an nd of 1.58397 and a Vd of 40.83. It has medium thermal expansion (CTE of 9.3×10⁻⁶/K), good chemical resistance, radiation resistance, and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.38–2.5 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.38–2.5 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.390–2.500 µm
Optical Properties
Refractive Index (nd) 1.58397
Abbe Number (Vd) 40.83
Dispersion Formula Sellmeier
Wavelength Range 0.38 — 2.5 µm
$$n(\lambda) = \sqrt{1 + \frac{1.28887\,\lambda^2}{\lambda^2 - 0.00920016} + \frac{0.162819\,\lambda^2}{\lambda^2 - 0.0456954} + \frac{10.558\,\lambda^2}{\lambda^2 - 1275.44}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 9.3
TCE 100/300°C (10-6/K) 10.66
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
Physical Properties
Density (g/cm³) 3.221
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 2
Stain Resistance 0
Acid Resistance 1
Alkali Resistance 1
Phosphate Resistance 2
Notes

radiation resistant, lead containing, inquiry glass

Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
PBL35Y Ohara 1.581591 40.855991
LF5 Sumita 1.58144 40.8
QF50 CDGM 1.58144 40.885954
QF50GTI CDGM 1.58144 40.885954
H-QF50 CDGM 1.58144 40.888972
FL5 Hoya 1.581437 40.887611
E-FL5 Hoya 1.58144 40.89
PBL25Y Ohara 1.581439 40.768047
B81-41 Corning 1.581396 40.816116
PBL25 Ohara 1.581439 40.753351
Similar Glasses (Schott)
Glass Manufacturer nd Vd Compare
N-LF5 Schott 1.58144 40.848909
LF5 Schott 1.58144 40.85
LF5HT Schott 1.581483 40.913786
LF5HTi Schott 1.58144 40.89
LF7 Schott 1.575011 41.490793
LF5G19 Schott 1.59655 39.89
F8HT Schott 1.59551 39.179444
F8 Schott 1.59551 39.179444
LF6HT Schott 1.56732 42.847665
F14HT Schott 1.601389 38.266237
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