FTL10 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: 0.380–0.700 µm
Optical Properties
Refractive Index (nd) 1.501372
Abbe Number (Vd) 56.399833
Dispersion Formula Schott
Wavelength Range 0.365 — 0.9 µm
$$n(\lambda) = \sqrt{2.22233 - 0.00857605\,\lambda^2 + 0.0109677\,\lambda^{-2} + 0.000416937\,\lambda^{-4} - 2.74634 \times 10^{-5}\,\lambda^{-6} + 2.17025 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 9.2
TCE 100/300°C (10-6/K) 10.4
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-5.4465 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) 2.53
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
K10 Schott 1.50137 56.41
C10 Hoya 1.50137 56.296772
KDP Generic Birefringent 1.509182 56.224997
C2 Hoya 1.51602 56.771193
H-K8 CDGM 1.51602 56.794825
KF3 Schott 1.51454 54.702547
CF3 Hoya 1.51454 54.628437
KF3 Sumita 1.51454 54.6
K4 Schott 1.518952 57.399398
K5G20 Schott 1.52344 56.76
Similar Glasses (Ohara)
Glass Manufacturer nd Vd
S-FTL10 Ohara 1.501372 56.421009
NSL2 Ohara 1.516016 56.800755
S-NSL2 Ohara 1.516016 56.858179
NSL33 Ohara 1.514536 54.714595
S-NSL3 Ohara 1.518229 58.902057
NSL3 Ohara 1.518229 58.966406
NSL7 Ohara 1.511121 60.485793
NSL5 Ohara 1.522494 59.790926
S-NSL5 Ohara 1.522494 59.835417
S-NSL36 Ohara 1.517417 52.430903
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