NSL5 by Ohara

Obsolete Unknown Environmentally Dangerous
Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.365–0.9 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.365–0.9 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.340–0.900 µm
Optical Properties
Refractive Index (nd) 1.522494
Abbe Number (Vd) 59.790926
Dispersion Formula Schott
Wavelength Range 0.365 — 0.9 µm
$$n(\lambda) = \sqrt{2.2843 - 0.00813286\,\lambda^2 + 0.0124095\,\lambda^{-2} - 7.44677 \times 10^{-6}\,\lambda^{-4} + 2.86937 \times 10^{-5}\,\lambda^{-6} - 1.23762 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 8.2
TCE 100/300°C (10-6/K) 9.6
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-1.9066 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) 2.56
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
K5 Sumita 1.52249 59.6
K5HT Schott 1.522453 59.530889
K5 Schott 1.522489 59.482671
H-K50 CDGM 1.52249 59.480754
N-K5 Schott 1.52249 59.48
B23-59 Corning 1.522996 59.479482
C5 Hoya 1.522488 59.447258
K50 Schott 1.522572 60.179756
KN1 Sumita 1.524 59.3
UK50 Schott 1.522571 60.383109
Similar Glasses (Ohara)
Glass Manufacturer nd Vd
S-NSL5 Ohara 1.522494 59.835417
NSL3 Ohara 1.518229 58.966406
S-NSL3 Ohara 1.518229 58.902057
NSL7 Ohara 1.511121 60.485793
S-BAL12 Ohara 1.539956 59.462478
BAL12 Ohara 1.539955 59.454008
S-NSL2 Ohara 1.516016 56.858179
NSL2 Ohara 1.516016 56.800755
S-BSL7R Ohara 1.51633 63.881689
BSL1 Ohara 1.510091 63.635037
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