LACL60 by Hoya

Special Very Rare Environmentally Dangerous

LACL60 by Hoya is a special optical glass with a very rare melt frequency. It transmits from 0.28 to 1.55 µm with an nd of 1.64 and a Vd of 60.2. It has low thermal expansion (CTE of 6.0×10⁻⁶/K), below average chemical resistance, and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.36501–1.5296 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.36501–1.5296 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.280–1.550 µm
Optical Properties
Refractive Index (nd) 1.64
Abbe Number (Vd) 60.2
Dispersion Formula Schott
Wavelength Range 0.36501 — 1.5296 µm
$$n(\lambda) = \sqrt{2.64909 - 0.0141599\,\lambda^2 + 0.0144511\,\lambda^{-2} + 0.000527079\,\lambda^{-4} - 4.34475 \times 10^{-5}\,\lambda^{-6} + 2.4613 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 6.0
TCE 100/300°C (10-6/K) 7.8
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[3.28907 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.02
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 3
Stain Resistance 5
Acid Resistance 4
Alkali Resistance —
Phosphate Resistance —
Notes

Not in a position to accept new order because of discontinuation.

Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
H-LAK4L CDGM 1.64 60.202769
C41-60 Corning 1.640495 60.130957
BSM81 Ohara 1.639999 60.091709
LAK21 Schott 1.640495 60.101885
N-LAK21 Schott 1.64049 60.1
LAKN2 Sumita 1.6405 60.1
K-LaKn2 Sumita 1.6405 60.1
S-BSM81 Ohara 1.639999 60.078127
LAKL21 Schott 1.64048 59.749915
BSM36 Ohara 1.642495 58.369399
Similar Glasses (Hoya)
Glass Manufacturer nd Vd Compare
LACL6 Hoya 1.640003 60.153568
LAC6 Hoya 1.642498 57.959359
LAC7 Hoya 1.6516 58.4
BACD16 Hoya 1.62041 60.35
BACD15 Hoya 1.62299 58.12
M-BACD15 Hoya 1.62263 58.17
MP-BACD15 Hoya 1.62263 58.17
LACL1 Hoya 1.640851 56.835319
ADC1 Hoya 1.62 62.192825
ATC1 Hoya 1.62 62.19284
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