LAH55 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) 1.834807
Abbe Number (Vd) 42.72372
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{3.27649 - 0.0153091\,\lambda^2 + 0.0304159\,\lambda^{-2} + 0.000886707\,\lambda^{-4} - 1.7183 \times 10^{-5}\,\lambda^{-6} + 2.70507 \times 10^{-6}\,\lambda^{-8}}$$
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
H-ZLAF55D CDGM 1.83481 42.725177
TAFD5F Hoya 1.83481 42.72
TAFD5G Hoya 1.83481 42.72
H-ZLAF55C CDGM 1.83481 42.711575
K-LaSFn8W Sumita 1.8349 42.7
K-LaSFn8 Sumita 1.835 42.7
LASFN8 Sumita 1.835 42.7
TAFD5 Hoya 1.835 42.984244
N-LASF41 Schott 1.83501 43.13
D-ZLAF61 CDGM 1.82241 42.714541
Similar Glasses (Ohara)
Glass Manufacturer nd Vd
S-LAH55V Ohara 1.834807 42.725324
S-LAH55 Ohara 1.834807 42.713673
S-LAH55VS Ohara 1.834809 42.74368
L-LAH90 Ohara 1.8322 40.097595
S-LAH89 Ohara 1.8515 40.782269
S-LAH54 Ohara 1.815543 44.361146
LAH54 Ohara 1.815543 44.361146
L-LAH85 Ohara 1.854 40.393284
L-LAH85V Ohara 1.854 40.378368
L-LAH84P Ohara 1.81225 40.294279
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