ZF5 by CDGM

Obsolete Rare Environmentally Dangerous

ZF5 by CDGM is an obsolete optical glass with a rare melt frequency. It transmits from 0.35 to 2.40 µm with an nd of 1.739999 and a Vd of 28.245048. It has medium thermal expansion (CTE of 8.6×10⁻⁶/K), 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: 0.350–2.400 µm
Optical Properties
Refractive Index (nd) 1.739999
Abbe Number (Vd) 28.245048
Dispersion Formula Schott
Wavelength Range 0.365 — 0.7065 µm
$$n(\lambda) = \sqrt{2.91604 - 0.0104356\,\lambda^2 + 0.0339079\,\lambda^{-2} + 0.00227288\,\lambda^{-4} - 0.000135632\,\lambda^{-6} + 1.65276 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 8.6
TCE 100/300°C (10-6/K) 9.8
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) 4.65
Relative Cost 2.5
Mechanical Properties
Young's Modulus (GPa) 54.4
Poisson's Ratio 0.236
Knoop Hardness (kgf/mm²) 390.0
Chemical Resistance
Climatic Resistance —
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
FD3 Hoya 1.739999 28.245048
PBH3 Ohara 1.739998 28.283809
PBH3W Ohara 1.739998 28.287409
SF3 Schott 1.74 28.2
SF3 Sumita 1.74 28.2
S-TIH3 Ohara 1.739998 28.296005
D40-28 Corning 1.740001 28.102623
SF54 Schott 1.7408 28.090813
PBH13W Ohara 1.740769 27.793228
PBH13 Ohara 1.740769 27.793228
Similar Glasses (CDGM)
Glass Manufacturer nd Vd Compare
H-ZF5 CDGM 1.74 28.295649
ZF50 CDGM 1.74077 27.76788
H-ZF50 CDGM 1.74077 27.760063
H-ZF4AGT CDGM 1.72825 28.318797
H-ZF4A CDGM 1.72825 28.318797
ZF4 CDGM 1.728251 28.3239
ZF6 CDGM 1.755205 27.546239
H-ZF6 CDGM 1.7552 27.530047
H-ZF3 CDGM 1.71736 29.49911
ZF3 CDGM 1.717365 29.510385
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