LACL7 by Hoya

Obsolete Unknown Environmentally Dangerous

LACL7 by Hoya is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.669996 and a Vd of 57.308358. 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) 1.669996
Abbe Number (Vd) 57.308358
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{2.7437 - 0.014435\,\lambda^2 + 0.0154072\,\lambda^{-2} + 0.000857441\,\lambda^{-4} - 8.02733 \times 10^{-5}\,\lambda^{-6} + 4.18681 \times 10^{-6}\,\lambda^{-8}}$$
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
LAL52 Ohara 1.669999 57.327972
S-LAL52 Ohara 1.669999 57.327972
K-LaKn4 Sumita 1.671 57.2
LAKN4 Sumita 1.671 57.2
LAK23 Schott 1.668816 57.38444
H-LAK1 CDGM 1.6595 57.34726
K-LaK11 Sumita 1.6583 57.3
LAK11 Sumita 1.6583 57.3
LAK11 Schott 1.658302 57.261599
LAL11 Ohara 1.658296 57.332589
Similar Glasses (Hoya)
Glass Manufacturer nd Vd Compare
LAC11 Hoya 1.658296 57.262085
LAC12 Hoya 1.6779 55.52
LAC7 Hoya 1.6516 58.4
LACL2 Hoya 1.650201 55.737216
LAC6 Hoya 1.642498 57.959359
LAC15 Hoya 1.6968 56.114704
LAC9 Hoya 1.691 54.7
LACL3 Hoya 1.664798 53.401295
LACL1 Hoya 1.640851 56.835319
LACL8 Hoya 1.677896 53.419218
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