F2 by Sumita

Obsolete Very Rare Environmentally Dangerous

F2 by Sumita is an obsolete optical glass with a very rare melt frequency. It transmits from 0.33 to 2.00 µm with an nd of 1.62004 and a Vd of 36.3. It has excellent chemical resistance and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.27–2.0 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.27–2.0 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.330–2.000 µm
Optical Properties
Refractive Index (nd) 1.62004
Abbe Number (Vd) 36.3
Dispersion Formula Schott
Wavelength Range 0.27 — 2.0 µm
$$n(\lambda) = \sqrt{2.55156 - 0.00693995\,\lambda^2 + 0.0252839\,\lambda^{-2} - 5.59507 \times 10^{-5}\,\lambda^{-4} + 0.000119111\,\lambda^{-6} - 3.72344 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) 9.6
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.6
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 1
Stain Resistance —
Acid Resistance 1
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
E-F2 Hoya 1.62004 36.3
F2 Hoya 1.62004 36.303385
C20-36 Corning 1.62001 36.30126
PBM2Y Ohara 1.620041 36.269263
S-TIM2 Ohara 1.620041 36.263378
PBM2 Ohara 1.620041 36.256658
H-F4 CDGM 1.62005 36.345886
F4 CDGM 1.620047 36.35673
F2HT Schott 1.62004 36.37
F2 Schott 1.62004 36.37
Similar Glasses (Sumita)
Glass Manufacturer nd Vd Compare
F4 Sumita 1.61659 36.6
F1 Sumita 1.62588 35.6
F3 Sumita 1.61293 36.9
F9 Sumita 1.62045 38.0
F6 Sumita 1.63636 35.4
F5 Sumita 1.60342 38.0
BASF1 Sumita 1.62606 39.1
SF7 Sumita 1.6398 34.6
BASF3 Sumita 1.60717 40.2
F8 Sumita 1.59551 39.2
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