K-SKLD100(M) by Sumita

Standard Rare Environmentally Friendly

K-SKLD100(M) by Sumita is a standard optical glass with a rare melt frequency. It transmits from 0.28 to 2.00 µm with an nd of 1.58773 and a Vd of 60.4. It has low thermal expansion (CTE of 6.1×10⁻⁶/K) and average chemical resistance.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.36–1.55 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.36–1.55 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.280–2.000 µm
Optical Properties
Refractive Index (nd) 1.58773
Abbe Number (Vd) 60.4
Dispersion Formula Schott
Wavelength Range 0.36 — 1.55 µm
$$n(\lambda) = \sqrt{2.48379 - 0.0116971\,\lambda^2 + 0.0136104\,\lambda^{-2} + 0.000197717\,\lambda^{-4} + 3.36347 \times 10^{-6}\,\lambda^{-6} - 9.67693 \times 10^{-8}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 6.1
TCE 100/300°C (10-6/K) 8.5
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[4.85 \times 10^{-6} + 2(1.02 \times 10^{-8})\,\Delta T + 3(-1.23 \times 10^{-10})\,\Delta T^2 + \frac{4.33 \times 10^{-7} + 2(8.06 \times 10^{-10})\,\Delta T}{\lambda - 0.176}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 2.69
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 3
Stain Resistance —
Acid Resistance 3
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
D-ZK3L-25 CDGM 1.5909 60.618517
S-BAL35R Ohara 1.58913 60.960312
D-ZK3A-25 CDGM 1.58828 61.012484
D-ZK3L CDGM 1.5917 60.701147
D-ZK3A CDGM 1.58913 61.101573
L-BAL43 Ohara 1.585729 59.69698
S-BAL35 Ohara 1.58913 61.135024
P-SK58A Schott 1.58913 61.15
L-BAL35 Ohara 1.58913 61.152601
D-ZK3 CDGM 1.58913 61.152901
Similar Glasses (Sumita)
Glass Manufacturer nd Vd Compare
K-PSK100(M) Sumita 1.58792 60.6
K-SKLD100 Sumita 1.5911 60.7
K-SKLD120 Sumita 1.5868 59.8
P-SK100 Sumita 1.5917 60.7
K-PSK100 Sumita 1.5917 60.7
K-SKLD5(M) Sumita 1.58606 61.0
K-CSK120 Sumita 1.587 59.6
CSK120 Sumita 1.587 59.6
CSK12 Sumita 1.5865 59.6
K-SKLD5 Sumita 1.58913 61.2
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