ZF1 by CDGM

Obsolete Rare Environmentally Dangerous

ZF1 by CDGM is an obsolete optical glass with a rare melt frequency. It transmits from 0.33 to 2.40 µm with an nd of 1.647693 and a Vd of 33.836872. It has medium thermal expansion (CTE of 8.9×10⁻⁶/K), excellent chemical resistance, low relative cost, and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.365–0.7065 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.365–0.7065 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.330–2.400 µm
Optical Properties
Refractive Index (nd) 1.647693
Abbe Number (Vd) 33.836872
Dispersion Formula Schott
Wavelength Range 0.365 — 0.7065 µm
$$n(\lambda) = \sqrt{2.63562 - 0.00883964\,\lambda^2 + 0.0256448\,\lambda^{-2} + 0.000965224\,\lambda^{-4} - 1.83048 \times 10^{-5}\,\lambda^{-6} + 5.55635 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 8.9
TCE 100/300°C (10-6/K) 10.4
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) 3.84
Relative Cost 1.6
Mechanical Properties
Young's Modulus (GPa) 53.3
Poisson's Ratio 0.235
Knoop Hardness (kgf/mm²) 410.0
Chemical Resistance
Climatic Resistance 1
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
FD2 Hoya 1.647693 33.836872
E-FD2 Hoya 1.64769 33.84
SF2 Schott 1.64769 33.85
N-SF2 Schott 1.64769 33.82
PBM22 Ohara 1.647689 33.802937
S-TIM22 Ohara 1.647689 33.792803
SF2 Sumita 1.64769 33.9
SF12 Schott 1.64831 33.841187
SF12 Sumita 1.64831 33.8
FD12 Hoya 1.648308 33.793909
Similar Glasses (CDGM)
Glass Manufacturer nd Vd Compare
H-ZF1 CDGM 1.64769 33.840317
H-ZF1A CDGM 1.64769 33.887993
ZF8 CDGM 1.65446 33.651201
H-F51 CDGM 1.6398 34.46457
F7 CDGM 1.636365 35.386204
H-ZF39 CDGM 1.6668 33.053728
H-ZBAF4 CDGM 1.66426 35.484251
H-F13 CDGM 1.62588 35.698971
F13 CDGM 1.625884 35.713679
F6 CDGM 1.624954 35.577816
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