LAH75 by Ohara

Obsolete Unknown Environmentally Friendly

LAH75 by Ohara is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.873996 and a Vd of 35.258591.

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) 1.873996
Abbe Number (Vd) 35.258591
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{3.39721 - 0.0158255\,\lambda^2 + 0.0368189\,\lambda^{-2} + 0.00175964\,\lambda^{-4} - 8.40417 \times 10^{-5}\,\lambda^{-6} + 1.05228 \times 10^{-5}\,\lambda^{-8}}$$
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
K-VC91(M) Sumita 1.88175 34.9
K-VC91 Sumita 1.8866 35.0
MC-TAFD317 Hoya 1.8812 37.17
MC-TAFD307 Hoya 1.88202 37.22
MP-TAFD307 Hoya 1.88202 37.22
M-TAFD307 Hoya 1.88202 37.22
D-ZLAF67-25 CDGM 1.88259 37.185491
D-ZLAF67 CDGM 1.88385 37.198899
TAFD13 Hoya 1.855396 36.557002
H-ZLAF3 CDGM 1.855449 36.59805
Similar Glasses (Ohara)
Glass Manufacturer nd Vd Compare
S-LAH75 Ohara 1.873996 35.258594
L-LAH94 Ohara 1.860999 37.097767
S-LAH92 Ohara 1.891899 37.134024
S-LAH93 Ohara 1.90525 35.036826
LAH71 Ohara 1.850259 32.28594
S-LAH71 Ohara 1.850259 32.27012
LAH78 Ohara 1.901355 31.550244
LAH80 Ohara 1.885 30.163795
L-LAH83 Ohara 1.864 40.577742
S-LAH95 Ohara 1.903659 31.343065
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