ALN by Generic Birefringent

Standard Unknown Environmentally Friendly

ALN by Generic Birefringent is a standard optical glass. It transmits from 0.22 to 5.00 µm with an nd of 2.154291 and a Vd of 50.733102.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.22–5.0 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.22–5.0 µm
Abbe Number Calculator
Transmission vs Wavelength

No transmission data available.

Transmission Calculator
Valid wavelength range: 0.220–5.000 µm
Optical Properties
Refractive Index (nd) 2.154291
Abbe Number (Vd) 50.733102
Dispersion Formula Sellmeier 4
Wavelength Range 0.22 — 5.0 µm
$$n(\lambda) = \sqrt{3.1399 + \frac{1.3786\,\lambda^2}{\lambda^2 - 0.02941} + \frac{3.861\,\lambda^2}{\lambda^2 - 225.901}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) —
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
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 —
Notes

source: Handbook of Optics Vol. II

Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
ALN Generic IR 2.154291 50.733102
H-ZLAF96 CDGM 2.0509 26.985858
TAFD65 Hoya 2.0509 26.94
LASF35 Schott 2.02204 29.06
TAFD75-W Hoya 2.102 23.39
H-ZLAF91 CDGM 2.001 29.151347
REALVIEW_2.0 Schott 2.001017 29.14
S-LAH99W Ohara 2.001 29.139473
S-LAH99 Ohara 2.001 29.139473
TAFD55-W Hoya 2.001 29.13
Similar Glasses (Generic Birefringent)
Glass Manufacturer nd Vd Compare
ALN-E Generic Birefringent 2.200116 44.15554
CAMOO4 Generic Birefringent 1.992539 28.832428
LINBO3-E Generic Birefringent 2.214539 20.455966
CAMOO4-E Generic Birefringent 2.002336 26.628162
CAWO4-E Generic Birefringent 1.937211 33.304949
CAWO4 Generic Birefringent 1.920414 34.953592
LINBO3 Generic Birefringent 2.300158 18.711921
TEO2 Generic Birefringent 2.274935 16.22277
PBMOO4-E Generic Birefringent 2.277375 15.77258
SRMOO4 Generic Birefringent 1.908806 29.94765
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