C79-80 by Corning

Standard Unknown Environmentally Friendly

C79-80 by Corning is a standard optical glass. It transmits from 0.18 to 1.12 µm with an nd of 1.458467 and a Vd of 67.795012. It has very low thermal expansion (CTE of 0.52×10⁻⁶/K).

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.185–1.12 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.185–1.12 µm
Abbe Number Calculator
Transmission vs Wavelength

No transmission data available.

Transmission Calculator
Valid wavelength range: 0.185–1.120 µm
Optical Properties
Refractive Index (nd) 1.458467
Abbe Number (Vd) 67.795012
Dispersion Formula Sellmeier
Wavelength Range 0.185 — 1.12 µm
$$n(\lambda) = \sqrt{1 + \frac{0.68374\,\lambda^2}{\lambda^2 - 0.00460353} + \frac{0.420324\,\lambda^2}{\lambda^2 - 0.0133969} + \frac{0.585027\,\lambda^2}{\lambda^2 - 64.4933}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 0.52
TCE 100/300°C (10-6/K) —
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 22\,°\text{C}$$
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 —
Notes

Corning 7980 KrF Grade glass

Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
F_SILICA Generic IR 1.458464 67.821433
LITHOSIL-Q Schott 1.45844 67.83
SK-1300 Ohara 1.458567 67.837244
SK-1310 Ohara 1.458663 67.854535
SUPRASIL Heraeus 1.458464 67.878205
HOQ Heraeus 1.458563 67.664757
HOMOSIL Heraeus 1.458563 67.664757
INFRASIL Heraeus 1.458563 67.664757
HERASIL Heraeus 1.458563 67.664757
KDP-E Generic Birefringent 1.468324 68.984949
Similar Glasses (Corning)
Glass Manufacturer nd Vd Compare
A63-65 Corning 1.464501 65.763211
A88-66 Corning 1.487502 65.807152
A87-70 Corning 1.487248 70.500557
B10-63 Corning 1.509992 63.551713
B18-65 Corning 1.518199 65.115452
B16-64 Corning 1.516804 64.224234
B11-60 Corning 1.510999 60.383147
B19-61 Corning 1.519061 61.386004
B18-60 Corning 1.518201 60.291781
B23-59 Corning 1.522996 59.479482
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