LAL7 by Ohara

Obsolete Unknown Environmentally Friendly

LAL7 by Ohara is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.651597 and a Vd of 58.519433.

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) 1.651597
Abbe Number (Vd) 58.519433
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{2.68338 - 0.0123035\,\lambda^2 + 0.0156141\,\lambda^{-2} + 0.000474398\,\lambda^{-4} - 2.79356 \times 10^{-5}\,\lambda^{-6} + 1.54413 \times 10^{-6}\,\lambda^{-8}}$$
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
N-LAK7 Schott 1.6516 58.52
LAKN7 Schott 1.6516 58.517773
C52-58 Corning 1.6516 58.511488
H-LAK50A CDGM 1.6516 58.403057
LAC7 Hoya 1.6516 58.4
K-LaK7 Sumita 1.6516 58.3
LAK7 Sumita 1.6516 58.3
LAK6 Sumita 1.6425 58.1
K-LaK6 Sumita 1.6425 58.1
C42-58 Corning 1.642502 58.061633
Similar Glasses (Ohara)
Glass Manufacturer nd Vd Compare
S-LAL7Q Ohara 1.6516 58.544459
S-LAL7 Ohara 1.651597 58.550655
BSM36 Ohara 1.642495 58.369399
S-BSM36 Ohara 1.642495 58.369399
LAL11 Ohara 1.658296 57.332589
S-LAL11 Ohara 1.658296 57.332589
S-BSM93 Ohara 1.640998 56.927542
BSM93 Ohara 1.640998 56.927542
S-BSM81 Ohara 1.639999 60.078127
BSM81 Ohara 1.639999 60.091709
Compare Glasses
    Compare Selected