LAFL5 by Hoya

Obsolete Unknown Environmentally Dangerous

LAFL5 by Hoya is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.719998 and a Vd of 43.903303. 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) 1.719998
Abbe Number (Vd) 43.903303
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{2.87819 - 0.00633572\,\lambda^2 + 0.0293616\,\lambda^{-2} - 0.000708689\,\lambda^{-4} + 0.000147228\,\lambda^{-6} - 4.19035 \times 10^{-6}\,\lambda^{-8}}$$
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
LAM52 Ohara 1.72 43.705625
LAFN4 Sumita 1.72 43.7
S-LAM52 Ohara 1.72 43.689812
H-LAF62 CDGM 1.72 43.680739
LAFN10 Sumita 1.72016 42.1
LAM58 Ohara 1.72 41.989859
S-LAM58 Ohara 1.72 41.978463
K-LaFn11 Sumita 1.72013 46.0
LAFN11 Sumita 1.72013 46.0
S-LAM61 Ohara 1.720002 46.024571
Similar Glasses (Hoya)
Glass Manufacturer nd Vd Compare
LAFL4 Hoya 1.712704 43.295113
LAFL6 Hoya 1.72 42.016239
LAF20 Hoya 1.744 44.872914
LAF2 Hoya 1.744 44.9
M-LAF81 Hoya 1.73077 40.5
MP-LAF81 Hoya 1.73077 40.5
BAFD7 Hoya 1.70154 41.15
LAF30 Hoya 1.717 47.97772
LAF3 Hoya 1.717 47.98
BAFD15 Hoya 1.701999 40.195943
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