ZK1 by Schott

Obsolete Unknown Environmentally Dangerous

ZK1 by Schott is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.533149 and a Vd of 57.980912. It has medium thermal expansion (CTE of 7.5×10⁻⁶/K) and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.334–2.325 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.334–2.325 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.334–2.325 µm
Optical Properties
Refractive Index (nd) 1.533149
Abbe Number (Vd) 57.980912
Dispersion Formula Sellmeier
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{1 + \frac{1.09192\,\lambda^2}{\lambda^2 - 0.006555} + \frac{0.22346\,\lambda^2}{\lambda^2 - 0.0243713} + \frac{0.869353\,\lambda^2}{\lambda^2 - 102.338}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 7.5
TCE 100/300°C (10-6/K) 8.6
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[2.39 \times 10^{-6} + 2(1.51 \times 10^{-8})\,\Delta T + 3(-2.19 \times 10^{-11})\,\Delta T^2 + \frac{5.33 \times 10^{-7} + 2(6.38 \times 10^{-10})\,\Delta T}{\lambda - 0.186}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 2.71
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

old

Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
ZNC1 Hoya 1.533149 58.063515
C12 Hoya 1.523073 58.640203
H-K51 CDGM 1.52307 58.639792
BAL12 Ohara 1.539955 59.454008
S-BAL12 Ohara 1.539956 59.462478
KN1 Sumita 1.524 59.3
B39-59 Corning 1.539505 59.712433
BAK2 Sumita 1.53996 59.7
BAC2 Hoya 1.539961 59.721586
H-BAK2 CDGM 1.53996 59.724182
Similar Glasses (Schott)
Glass Manufacturer nd Vd Compare
B270 Schott 1.52308 58.571369
K5G20 Schott 1.52344 56.76
BAK2 Schott 1.53996 59.708588
N-BAK2 Schott 1.53996 59.71
K4 Schott 1.518952 57.399398
N-K5 Schott 1.52249 59.48
K5 Schott 1.522489 59.482671
K5HT Schott 1.522453 59.530889
K3 Schott 1.51823 58.976559
K50 Schott 1.522572 60.179756
Compare Glasses
    Compare Selected