SK11 by Sumita

Obsolete Very Rare Environmentally Dangerous
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: 0.290–2.000 µm
Optical Properties
Refractive Index (nd) 1.56384
Abbe Number (Vd) 60.8
Dispersion Formula Schott
Wavelength Range 0.27 — 2.0 µm
$$n(\lambda) = \sqrt{2.4119 - 0.0107226\,\lambda^2 + 0.0115756\,\lambda^{-2} + 0.000585536\,\lambda^{-4} - 5.11784 \times 10^{-5}\,\lambda^{-6} + 2.65924 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) 7.7
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) 3.06
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 1
Stain Resistance —
Acid Resistance 2
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd
N-SK11 Schott 1.56384 60.8
SK11 Schott 1.56384 60.798869
BACD11 Hoya 1.56384 60.83
H-BAK6 CDGM 1.56388 60.764747
L-PHL1 Ohara 1.56455 60.818065
BAL41 Ohara 1.563839 60.695914
S-BAL41 Ohara 1.563839 60.666575
B64-61 Corning 1.564005 60.964853
BAL50 Ohara 1.559625 61.172671
S-BAL50 Ohara 1.559625 61.172671
Similar Glasses (Sumita)
Glass Manufacturer nd Vd
K-PSK11 Sumita 1.5658 61.0
P-SK11 Sumita 1.5658 61.0
K-SKLD300 Sumita 1.5642 60.4
K-PSK11(M) Sumita 1.55985 61.0
SK20 Sumita 1.55963 61.2
K-SKLD300(M) Sumita 1.56124 60.1
PSK2 Sumita 1.56873 63.1
SK12 Sumita 1.58313 59.3
K-SKLD5(M) Sumita 1.58606 61.0
K-SKLD120(M) Sumita 1.58401 59.5
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