S-LAH67 by Ohara

Obsolete Unknown Environmentally Friendly
Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.3–2.4 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.3–2.4 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.330–0.700 µm
Optical Properties
Refractive Index (nd) 1.794997
Abbe Number (Vd) 45.293967
Dispersion Formula Schott
Wavelength Range 0.3 — 2.4 µm
$$n(\lambda) = \sqrt{3.14396 - 0.0155417\,\lambda^2 + 0.0266482\,\lambda^{-2} + 0.000778131\,\lambda^{-4} - 1.94622 \times 10^{-5}\,\lambda^{-6} + 2.46685 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 6.0
TCE 100/300°C (10-6/K) 6.9
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[4.95 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) 4.29
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance —
Stain Resistance —
Acid Resistance 4
Alkali Resistance —
Phosphate Resistance 1
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd
LASFN19 Sumita 1.795 45.2
TAF2 Hoya 1.7945 45.39
N-LAF32 Schott 1.79457 45.53
E00-46 Corning 1.800001 45.608618
M-TAF31 Hoya 1.80139 45.45
MP-TAF31-15 Hoya 1.80154 45.47
MC-TAF31-15 Hoya 1.80154 45.47
D-ZLAF50-25 CDGM 1.80225 45.452746
D-ZLAF50 CDGM 1.80337 45.491557
NBFD14 Hoya 1.801699 44.321602
Similar Glasses (Ohara)
Glass Manufacturer nd Vd
LAH67 Ohara 1.794997 45.293967
S-LAH51 Ohara 1.785896 44.202637
LAH51 Ohara 1.785896 44.186159
S-LAH65VS Ohara 1.804 46.527532
S-LAH65 Ohara 1.804 46.570373
LAH65 Ohara 1.804 46.575911
S-LAH65V Ohara 1.803999 46.583432
S-LAH64 Ohara 1.788001 47.368522
LAH64 Ohara 1.788001 47.385275
S-LAH54 Ohara 1.815543 44.361146
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