LAH66 by Ohara

Obsolete Unknown Environmentally Friendly

LAH66 by Ohara is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.772499 and a Vd of 49.60134.

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) 1.772499
Abbe Number (Vd) 49.60134
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{3.07311 - 0.0150432\,\lambda^2 + 0.0239335\,\lambda^{-2} + 0.000556967\,\lambda^{-4} - 1.00823 \times 10^{-5}\,\lambda^{-6} + 1.18733 \times 10^{-6}\,\lambda^{-8}}$$
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
LASFN7 Sumita 1.7725 49.6
K-LaSFn7 Sumita 1.7725 49.6
H-LAF50B CDGM 1.7725 49.598996
N-LAF34 Schott 1.7725 49.62
TAF1 Hoya 1.7725 49.63
LAFN28 Schott 1.773142 49.568242
D-LAF50-25 CDGM 1.77288 49.519338
MP-TAF105 Hoya 1.7725 49.5
MC-TAF105 Hoya 1.7725 49.5
M-TAF105 Hoya 1.7725 49.5
Similar Glasses (Ohara)
Glass Manufacturer nd Vd Compare
S-LAH66 Ohara 1.772499 49.598371
L-LAH91 Ohara 1.7645 49.096913
S-LAH96 Ohara 1.76385 48.488692
YGH52 Ohara 1.7865 50.001717
S-YGH52 Ohara 1.7865 50.001717
L-LAH87 Ohara 1.7703 47.401904
S-LAM54 Ohara 1.756998 47.82317
LAM54 Ohara 1.756998 47.815604
LAH64 Ohara 1.788001 47.385275
S-LAH64 Ohara 1.788001 47.368522
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