LAL9 by Ohara

Obsolete Unknown Environmentally Friendly
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.

Optical Properties
Refractive Index (nd) 1.691002
Abbe Number (Vd) 54.84322
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{2.80622 - 0.0132531\,\lambda^2 + 0.0193707\,\lambda^{-2} + 0.000138855\,\lambda^{-4} + 2.59658 \times 10^{-5}\,\lambda^{-6} - 9.35516 \times 10^{-7}\,\lambda^{-8}}$$
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
H-LAK59A CDGM 1.691 54.815309
LAK9 Sumita 1.691 54.8
K-LaK9 Sumita 1.691 54.8
C90-55 Corning 1.691008 54.793839
LAK9G15 Schott 1.69064 54.76
N-LAK9 Schott 1.691 54.71
LAK9 Schott 1.691002 54.708408
LAC9 Hoya 1.691 54.7
H-LAK2A CDGM 1.69211 54.539198
N-LAK14 Schott 1.6968 55.41
Similar Glasses (Ohara)
Glass Manufacturer nd Vd
S-LAL9 Ohara 1.691002 54.822578
LAL14 Ohara 1.696796 55.528037
S-LAL14 Ohara 1.696797 55.532241
LAL13 Ohara 1.693501 53.231566
S-LAL13 Ohara 1.693501 53.205327
L-LAL13 Ohara 1.6935 53.185799
L-LAL12 Ohara 1.6779 54.88744
LAL12 Ohara 1.6779 55.337587
S-LAL12 Ohara 1.6779 55.341195
S-LAL12Q Ohara 1.6779 55.346888
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