VC79 by Sumita

Obsolete Very Rare Environmentally Dangerous

VC79 by Sumita is an obsolete optical glass with a very rare melt frequency. It transmits from 0.27 to 2.00 µm with an nd of 1.6097 and a Vd of 57.8. It has average 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: 0.270–2.000 µm
Optical Properties
Refractive Index (nd) 1.6097
Abbe Number (Vd) 57.8
Dispersion Formula Schott
Wavelength Range 0.27 — 2.0 µm
$$n(\lambda) = \sqrt{2.54939 - 0.0109663\,\lambda^2 + 0.0148726\,\lambda^{-2} + 0.000310438\,\lambda^{-4} - 9.05534 \times 10^{-6}\,\lambda^{-6} + 6.72689 \times 10^{-7}\,\lambda^{-8}}$$
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) 3.09
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 2
Stain Resistance —
Acid Resistance 4
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
P-SK60 Schott 1.61035 57.9
D-ZK79 CDGM 1.60886 57.895896
D-ZK79-25 CDGM 1.60809 57.820851
C13-58 Corning 1.612693 58.570371
H-ZK6 CDGM 1.61272 58.577083
BACD4 Hoya 1.61272 58.58
SK4 Schott 1.61272 58.629829
N-SK4 Schott 1.61272 58.63
S-BSM4 Ohara 1.612716 58.716945
S-BSM2 Ohara 1.607379 56.816076
Similar Glasses (Sumita)
Glass Manufacturer nd Vd Compare
K-VC79 Sumita 1.61035 57.9
K-VC79(M) Sumita 1.60737 57.2
K-SK4 Sumita 1.61272 58.6
SK4 Sumita 1.61272 58.6
SK3 Sumita 1.60881 58.9
K-PSK200(M) Sumita 1.61083 58.9
SK2 Sumita 1.60738 56.7
K-PSK200 Sumita 1.61305 59.0
SK1 Sumita 1.61025 56.5
K-SK7 Sumita 1.60729 59.5
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