H-ZBAF4 by CDGM

Standard Rare Environmentally Friendly

H-ZBAF4 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 1.66426 and a Vd of 35.484251. It has medium thermal expansion (CTE of 7.9×10⁻⁶/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) 1.66426
Abbe Number (Vd) 35.484251
Dispersion Formula Sellmeier
Wavelength Range 0.365 — 2.325 µm
$$n(\lambda) = \sqrt{1 + \frac{0.151467\,\lambda^2}{\lambda^2 - 0.0571831} + \frac{1.5402\,\lambda^2}{\lambda^2 - 0.0111587} + \frac{1.18737\,\lambda^2}{\lambda^2 - 120.129}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 7.9
TCE 100/300°C (10-6/K) 9.5
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-5.11 \times 10^{-7} + 2(1.36 \times 10^{-8})\,\Delta T + 3(-2.61 \times 10^{-11})\,\Delta T^2 + \frac{8.17 \times 10^{-7} + 2(8.22 \times 10^{-10})\,\Delta T}{\lambda - 0.257}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.11
Relative Cost 5.2
Mechanical Properties
Young's Modulus (GPa) 85.53
Poisson's Ratio 0.249
Knoop Hardness (kgf/mm²) 602.0
Chemical Resistance
Climatic Resistance 1
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
BAH22 Ohara 1.664459 35.812757
BASF2 Schott 1.66446 35.829357
BAFD2 Hoya 1.664457 35.887705
BASF2 Sumita 1.66446 35.9
N-BASF2 Schott 1.66446 36.0
K-PSFn166 Sumita 1.663 34.4
K-PSFn166(M) Sumita 1.65858 34.4
BASF56 Schott 1.657149 36.735021
K-PG395 Sumita 1.658 36.9
K-PG395(M) Sumita 1.65296 36.8
Similar Glasses (CDGM)
Glass Manufacturer nd Vd Compare
ZF8 CDGM 1.65446 33.651201
H-ZF39 CDGM 1.6668 33.053728
H-ZF1A CDGM 1.64769 33.887993
H-ZF1 CDGM 1.64769 33.840317
ZF1 CDGM 1.647693 33.836872
H-F51 CDGM 1.6398 34.46457
ZF2 CDGM 1.672707 32.180986
H-ZF2 CDGM 1.6727 32.171186
F7 CDGM 1.636365 35.386204
H-TF5 CDGM 1.6541 39.539424
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