LACL2 by Hoya

Obsolete Unknown Environmentally Dangerous
Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.25–1.55 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.25–1.55 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.300–1.550 µm
Optical Properties
Refractive Index (nd) 1.650201
Abbe Number (Vd) 55.737216
Dispersion Formula Schott
Wavelength Range 0.25 — 1.55 µm
$$n(\lambda) = \sqrt{2.67367 - 0.0100571\,\lambda^2 + 0.0177752\,\lambda^{-2} + 0.000120724\,\lambda^{-4} + 2.08156 \times 10^{-5}\,\lambda^{-6} - 5.89403 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 6.9
TCE 100/300°C (10-6/K) 86.0
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[1.9084 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.74
Relative Cost 5.0
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 1
Stain Resistance 0
Acid Resistance 4
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd
LAKN5 Sumita 1.65 55.8
K-LaKn5 Sumita 1.65 55.8
N-LAK22 Schott 1.65113 55.89
H-LAK10 CDGM 1.65113 55.890872
LAKN22 Schott 1.65113 55.891754
C51-56 Corning 1.651124 55.895803
LAL54 Ohara 1.650996 56.154774
S-LAL54 Ohara 1.650996 56.163717
S-LAL54Q Ohara 1.651 56.238379
SK18RH Sumita 1.63854 55.5
Similar Glasses (Hoya)
Glass Manufacturer nd Vd
BACD18 Hoya 1.63854 55.45
MP-PCD55AR Hoya 1.63858 55.18
M-PCD55AR Hoya 1.63858 55.18
LACL1 Hoya 1.640851 56.835319
LAC11 Hoya 1.658296 57.262085
LAC6 Hoya 1.642498 57.959359
LAC7 Hoya 1.6516 58.4
BACED20 Hoya 1.648498 53.03151
E-BACED20 Hoya 1.6485 53.03
LACL3 Hoya 1.664798 53.401295
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