LASFN13 by Sumita

Obsolete Very Rare Environmentally Dangerous
Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.27–2.0 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.27–2.0 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.330–2.000 µm
Optical Properties
Refractive Index (nd) 1.863
Abbe Number (Vd) 41.6
Dispersion Formula Schott
Wavelength Range 0.27 — 2.0 µm
$$n(\lambda) = \sqrt{3.37126 - 0.014239\,\lambda^2 + 0.034073\,\lambda^{-2} + 0.000535014\,\lambda^{-4} + 5.80541 \times 10^{-5}\,\lambda^{-6} - 2.45337 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) 7.5
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 5.31
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 1
Stain Resistance —
Acid Resistance 1
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd
L-LAH83 Ohara 1.864 40.577742
TAFD32 Hoya 1.8707 40.73
E65-40 Corning 1.865 40.112393
D-ZLAF85LS CDGM 1.8545 40.593546
D-ZLAF85L CDGM 1.8537 40.579411
D-ZLAF85LS-25 CDGM 1.85344 40.557917
L-LAH85 Ohara 1.854 40.393284
L-LAH85V Ohara 1.854 40.378368
S-LAH89 Ohara 1.8515 40.782269
D-ZLAF85L-25 CDGM 1.8526 40.534071
Similar Glasses (Sumita)
Glass Manufacturer nd Vd
K-VC185 Sumita 1.85375 40.6
K-VC99 Sumita 1.8506 41.6
K-VC185(M) Sumita 1.84909 40.5
K-VC99(M) Sumita 1.84604 41.5
LASFN17 Sumita 1.883 40.9
K-LaSFn17 Sumita 1.883 40.8
K-VC90 Sumita 1.8528 39.0
K-VC90(M) Sumita 1.84859 38.9
LASFN8 Sumita 1.835 42.7
K-LaSFn8 Sumita 1.835 42.7
Compare Glasses
    Compare Selected