LACL1 by Hoya

Obsolete Unknown Environmentally Dangerous

LACL1 by Hoya is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.640851 and a Vd of 56.835319. It has dangerous environmental properties.

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) 1.640851
Abbe Number (Vd) 56.835319
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{2.64758 - 0.0122318\,\lambda^2 + 0.0157136\,\lambda^{-2} + 0.000512717\,\lambda^{-4} - 4.03019 \times 10^{-5}\,\lambda^{-6} + 2.74768 \times 10^{-6}\,\lambda^{-8}}$$
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
LAKN13 Sumita 1.641 56.8
S-BSM93 Ohara 1.640998 56.927542
BSM93 Ohara 1.640998 56.927542
LAKN6 Schott 1.642499 57.962061
C42-58 Corning 1.642502 58.061633
LAK6 Sumita 1.6425 58.1
K-LaK6 Sumita 1.6425 58.1
C39-56 Corning 1.638505 55.504447
K-SK18 Sumita 1.63854 55.5
SK18RH Sumita 1.63854 55.5
Similar Glasses (Hoya)
Glass Manufacturer nd Vd Compare
LAC6 Hoya 1.642498 57.959359
BACD18 Hoya 1.63854 55.45
LACL2 Hoya 1.650201 55.737216
M-PCD55AR Hoya 1.63858 55.18
MP-PCD55AR Hoya 1.63858 55.18
LAC7 Hoya 1.6516 58.4
LAC11 Hoya 1.658296 57.262085
E-BACD10 Hoya 1.6228 56.91
BACD10 Hoya 1.622799 56.906336
BACD15 Hoya 1.62299 58.12
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