D-ZK3A-25 by CDGM

Preferred Common Precision Molding Environmentally Friendly

D-ZK3A-25 by CDGM is a preferred optical glass with a common melt frequency. It transmits from 0.29 to 2.40 µm with an nd of 1.58828 and a Vd of 61.012484. It has low thermal expansion (CTE of 5.9×10⁻⁶/K), excellent chemical resistance, moderate relative cost, and precision molding compatibility.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.302–2.325 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.302–2.325 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.290–2.400 µm
Optical Properties
Refractive Index (nd) 1.58828
Abbe Number (Vd) 61.012484
Dispersion Formula Sellmeier
Wavelength Range 0.302 — 2.325 µm
$$n(\lambda) = \sqrt{1 + \frac{0.600126\,\lambda^2}{\lambda^2 - 0.00150824} + \frac{0.885666\,\lambda^2}{\lambda^2 - 0.0142989} + \frac{1.12368\,\lambda^2}{\lambda^2 - 95.8974}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 5.9
TCE 100/300°C (10-6/K) 7.9
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[3.82 \times 10^{-6} + 2(1.69 \times 10^{-8})\,\Delta T + 3(-5.99 \times 10^{-11})\,\Delta T^2 + \frac{2.95 \times 10^{-7} + 2(2.52 \times 10^{-10})\,\Delta T}{\lambda - 0.271}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.01
Relative Cost 4.1
Mechanical Properties
Young's Modulus (GPa) 91.12
Poisson's Ratio 0.258
Knoop Hardness (kgf/mm²) 547.0
Chemical Resistance
Climatic Resistance 1
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Notes

anneal rate:25℃/h

Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
S-BAL35R Ohara 1.58913 60.960312
S-BAL35 Ohara 1.58913 61.135024
P-SK58A Schott 1.58913 61.15
L-BAL35 Ohara 1.58913 61.152601
BAL35 Ohara 1.58913 61.182174
K-SKLD5 Sumita 1.58913 61.2
K-SK5 Sumita 1.58913 61.2
SK5 Sumita 1.58913 61.2
B89-61 Corning 1.588998 61.218914
BAL35Y Ohara 1.58913 61.233033
Similar Glasses (CDGM)
Glass Manufacturer nd Vd Compare
D-ZK3A CDGM 1.58913 61.101573
D-ZK3 CDGM 1.58913 61.152901
H-ZK3A CDGM 1.58913 61.2531
H-ZK3 CDGM 1.58913 61.253571
D-ZK3-25 CDGM 1.58833 61.284362
D-ZK3L-25 CDGM 1.5909 60.618517
D-ZK3L CDGM 1.5917 60.701147
D-ZK2L CDGM 1.587 59.600321
D-ZK2L-25 CDGM 1.58625 59.524868
D-ZK2A CDGM 1.58313 59.539751
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