SUPRASIL by Heraeus

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SUPRASIL by Heraeus is an optical glass. It transmits from 0.19 to 3.50 µm with an nd of 1.458464 and a Vd of 67.878205. It has very low thermal expansion (CTE of 0.51×10⁻⁶/K).

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.19–3.5 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.19–3.5 µm
Abbe Number Calculator
Transmission vs Wavelength

No transmission data available.

Transmission Calculator
Valid wavelength range: 0.190–3.500 µm
Optical Properties
Refractive Index (nd) 1.458464
Abbe Number (Vd) 67.878205
Dispersion Formula Sellmeier
Wavelength Range 0.19 — 3.5 µm
$$n(\lambda) = \sqrt{1 + \frac{0.473116\,\lambda^2}{\lambda^2 - 0.0129957} + \frac{0.631039\,\lambda^2}{\lambda^2 - 0.00412809} + \frac{0.906404\,\lambda^2}{\lambda^2 - 98.7685}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 0.51
TCE 100/300°C (10-6/K) —
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 2.201
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
SK-1310 Ohara 1.458663 67.854535
SK-1300 Ohara 1.458567 67.837244
LITHOSIL-Q Schott 1.45844 67.83
F_SILICA Generic IR 1.458464 67.821433
C79-80 Corning 1.458467 67.795012
KDP-E Generic Birefringent 1.468324 68.984949
H-QK1 CDGM 1.47047 66.876032
FC1 Hoya 1.470787 66.706713
FSL3 Ohara 1.464499 65.938855
FK3 Schott 1.4645 65.77
Similar Glasses (Heraeus)
Glass Manufacturer nd Vd Compare
HOQ Heraeus 1.458563 67.664757
INFRASIL Heraeus 1.458563 67.664757
HERASIL Heraeus 1.458563 67.664757
HOMOSIL Heraeus 1.458563 67.664757
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