H-ZF39 by CDGM

Standard Rare Environmentally Friendly

H-ZF39 by CDGM is a standard optical glass with a rare melt frequency. It transmits from 0.36 to 2.40 µm with an nd of 1.6668 and a Vd of 33.053728. It has medium thermal expansion (CTE of 9.0×10⁻⁶/K), excellent chemical resistance, and moderate relative cost.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.365–2.325 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.365–2.325 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.360–2.400 µm
Optical Properties
Refractive Index (nd) 1.6668
Abbe Number (Vd) 33.053728
Dispersion Formula Sellmeier
Wavelength Range 0.365 — 2.325 µm
$$n(\lambda) = \sqrt{1 + \frac{0.153634\,\lambda^2}{\lambda^2 - 0.0603806} + \frac{1.54071\,\lambda^2}{\lambda^2 - 0.0118591} + \frac{1.20957\,\lambda^2}{\lambda^2 - 119.98}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 9.0
TCE 100/300°C (10-6/K) 11.2
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-4.14 \times 10^{-6} + 2(1.44 \times 10^{-8})\,\Delta T + 3(-6.69 \times 10^{-11})\,\Delta T^2 + \frac{8.18 \times 10^{-7} + 2(9.54 \times 10^{-10})\,\Delta T}{\lambda - 0.274}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 2.92
Relative Cost 5.1
Mechanical Properties
Young's Modulus (GPa) 82.82
Poisson's Ratio 0.248
Knoop Hardness (kgf/mm²) 531.0
Chemical Resistance
Climatic Resistance 1
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
S-TIM39 Ohara 1.6668 33.054985
FD19 Hoya 1.666797 33.059707
PBM39 Ohara 1.666799 33.046816
SF19 Sumita 1.6668 33.1
SF19 Schott 1.6668 33.005581
N-SF19 Schott 1.66679 33.12
C67-33 Corning 1.666997 33.114648
C72-32 Corning 1.672698 32.31788
N-SF5 Schott 1.67271 32.25
SF5 Schott 1.6727 32.21
Similar Glasses (CDGM)
Glass Manufacturer nd Vd Compare
ZF2 CDGM 1.672707 32.180986
H-ZF2 CDGM 1.6727 32.171186
ZF8 CDGM 1.65446 33.651201
H-ZBAF4 CDGM 1.66426 35.484251
ZF1 CDGM 1.647693 33.836872
H-ZF1 CDGM 1.64769 33.840317
H-ZF1A CDGM 1.64769 33.887993
D-ZF10-25 CDGM 1.68731 31.183804
ZF10 CDGM 1.688934 31.184753
H-ZF10 CDGM 1.68893 31.16057
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