ZF3 by CDGM

Obsolete Rare Environmentally Dangerous

ZF3 by CDGM is an obsolete optical glass with a rare melt frequency. It transmits from 0.34 to 2.40 µm with an nd of 1.717365 and a Vd of 29.510385. It has medium thermal expansion (CTE of 8.3×10⁻⁶/K), excellent chemical resistance, low relative cost, and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.365–1.014 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.365–1.014 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.340–2.400 µm
Optical Properties
Refractive Index (nd) 1.717365
Abbe Number (Vd) 29.510385
Dispersion Formula Schott
Wavelength Range 0.365 — 1.014 µm
$$n(\lambda) = \sqrt{2.84759 - 0.0105088\,\lambda^2 + 0.0309451\,\lambda^{-2} + 0.00213696\,\lambda^{-4} - 0.00013104\,\lambda^{-6} + 1.42429 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 8.3
TCE 100/300°C (10-6/K) 9.5
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[3.61 \times 10^{-6} + 2(2.44 \times 10^{-8})\,\Delta T + 3(-3.11 \times 10^{-10})\,\Delta T^2 + \frac{1.38 \times 10^{-6} + 2(1.2 \times 10^{-9})\,\Delta T}{\lambda - 0.261}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 4.46
Relative Cost 2.2
Mechanical Properties
Young's Modulus (GPa) 54.6
Poisson's Ratio 0.235
Knoop Hardness (kgf/mm²) 390.0
Chemical Resistance
Climatic Resistance 1
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
SF1 Schott 1.71736 29.51
PBH1 Ohara 1.717362 29.513538
S-TIH1 Ohara 1.717362 29.518091
FD1 Hoya 1.71736 29.50028
SF1 Sumita 1.71736 29.5
E-FD1 Hoya 1.71736 29.5
K-SFLD1 Sumita 1.71736 29.5
E-FD1L Hoya 1.71736 29.5
D17-29 Corning 1.717409 29.492751
N-SF1 Schott 1.71736 29.62
Similar Glasses (CDGM)
Glass Manufacturer nd Vd Compare
H-ZF3 CDGM 1.71736 29.49911
ZF4 CDGM 1.728251 28.3239
H-ZF4A CDGM 1.72825 28.318797
H-ZF4AGT CDGM 1.72825 28.318797
H-ZF11 CDGM 1.69894 30.05045
ZF11 CDGM 1.698949 30.065686
H-ZF5 CDGM 1.74 28.295649
ZF5 CDGM 1.739999 28.245048
ZF50 CDGM 1.74077 27.76788
H-ZF50 CDGM 1.74077 27.760063
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