H-ZLAF1 by CDGM

Standard Rare Environmentally Friendly

H-ZLAF1 by CDGM is a standard optical glass with a rare melt frequency. It transmits from 0.32 to 2.40 µm with an nd of 1.80166 and a Vd of 44.263459. It has low thermal expansion (CTE of 5.3×10⁻⁶/K), excellent chemical resistance, and high 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: 0.320–2.400 µm
Optical Properties
Refractive Index (nd) 1.80166
Abbe Number (Vd) 44.263459
Dispersion Formula Sellmeier
Wavelength Range 0.365 — 2.325 µm
$$n(\lambda) = \sqrt{1 + \frac{0.513638\,\lambda^2}{\lambda^2 - 0.0313064} + \frac{1.65031\,\lambda^2}{\lambda^2 - 0.00735389} + \frac{1.47644\,\lambda^2}{\lambda^2 - 100.105}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 5.3
TCE 100/300°C (10-6/K) 7.2
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[3.15 \times 10^{-6} + 2(1.76 \times 10^{-8})\,\Delta T + 3(-6.68 \times 10^{-11})\,\Delta T^2 + \frac{5.2 \times 10^{-7} + 2(1.18 \times 10^{-10})\,\Delta T}{\lambda - 0.262}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 4.3
Relative Cost 11.5
Mechanical Properties
Young's Modulus (GPa) 123.21
Poisson's Ratio 0.292
Knoop Hardness (kgf/mm²) 725.0
Chemical Resistance
Climatic Resistance 1
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
NBFD14 Hoya 1.801699 44.321602
K-VC100 Sumita 1.804 43.6
K-VC100(M) Sumita 1.79916 43.5
M-TAF31 Hoya 1.80139 45.45
MP-TAF31-15 Hoya 1.80154 45.47
MC-TAF31-15 Hoya 1.80154 45.47
D96-43 Corning 1.796195 43.217783
LASFN19 Sumita 1.795 45.2
E00-46 Corning 1.800001 45.608618
S-LAH67 Ohara 1.794997 45.293967
Similar Glasses (CDGM)
Glass Manufacturer nd Vd Compare
D-ZLAF50-25 CDGM 1.80225 45.452746
D-ZLAF50 CDGM 1.80337 45.491557
H-LAF54 CDGM 1.799519 42.253294
H-LAF52 CDGM 1.7859 44.187159
H-ZLAF50E CDGM 1.804 46.574487
H-ZLAF50D CDGM 1.804 46.575016
H-ZLAF2A CDGM 1.80279 46.761307
H-ZLAF69 CDGM 1.816 46.5493
H-ZLAF69A CDGM 1.816 46.556066
D-ZLAF61-25 CDGM 1.82131 42.674895
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