LAH58 by Ohara

Obsolete Unknown Environmentally Friendly

LAH58 by Ohara is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.882997 and a Vd of 40.778667.

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) 1.882997
Abbe Number (Vd) 40.778667
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{3.44157 - 0.0142375\,\lambda^2 + 0.0347312\,\lambda^{-2} + 0.00102644\,\lambda^{-4} - 1.6387 \times 10^{-5}\,\lambda^{-6} + 2.87141 \times 10^{-6}\,\lambda^{-8}}$$
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
N-LASF31A Schott 1.883 40.76
K-LaSFn17 Sumita 1.883 40.8
H-ZLAF68B CDGM 1.883004 40.806875
TAFD30 Hoya 1.883 40.81
H-ZLAF68C CDGM 1.883 40.847465
LASFN17 Sumita 1.883 40.9
LASFN31 Schott 1.880669 41.009774
N-LASF31 Schott 1.88067 41.01
H-ZLAF73 CDGM 1.881 40.161331
TAFD33 Hoya 1.881 40.14
Similar Glasses (Ohara)
Glass Manufacturer nd Vd Compare
S-LAH58 Ohara 1.882997 40.765107
L-LAH83 Ohara 1.864 40.577742
S-LAH92 Ohara 1.891899 37.134024
L-LAH85 Ohara 1.854 40.393284
L-LAH85V Ohara 1.854 40.378368
S-LAH89 Ohara 1.8515 40.782269
L-LAH94 Ohara 1.860999 37.097767
S-LAH75 Ohara 1.873996 35.258594
LAH75 Ohara 1.873996 35.258591
S-LAH93 Ohara 1.90525 35.036826
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