D-ZLAF50 by CDGM

Preferred Rare Precision Molding Environmentally Friendly

D-ZLAF50 by CDGM is a preferred optical glass with a rare melt frequency. It transmits from 0.33 to 2.40 µm with an nd of 1.80337 and a Vd of 45.491557. It has low thermal expansion (CTE of 6.2×10⁻⁶/K), excellent chemical resistance, very high relative cost, and precision molding compatibility.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.313–2.325 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.313–2.325 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.330–2.400 µm
Optical Properties
Refractive Index (nd) 1.80337
Abbe Number (Vd) 45.491557
Dispersion Formula Sellmeier
Wavelength Range 0.313 — 2.325 µm
$$n(\lambda) = \sqrt{1 + \frac{1.13755\,\lambda^2}{\lambda^2 - 87.6011} + \frac{0.273776\,\lambda^2}{\lambda^2 - 0.034881} + \frac{1.89654\,\lambda^2}{\lambda^2 - 0.0098259}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 6.2
TCE 100/300°C (10-6/K) 7.5
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[4.6 \times 10^{-6} + 2(1.8 \times 10^{-8})\,\Delta T + 3(-2.67 \times 10^{-11})\,\Delta T^2 + \frac{7.73 \times 10^{-7} + 2(3.51 \times 10^{-10})\,\Delta T}{\lambda - 0.181}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 4.89
Relative Cost 25.4
Mechanical Properties
Young's Modulus (GPa) 121.74
Poisson's Ratio 0.302
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 1
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Notes

anneal rate:4℃/h

Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
MP-TAF31-15 Hoya 1.80154 45.47
MC-TAF31-15 Hoya 1.80154 45.47
M-TAF31 Hoya 1.80139 45.45
E00-46 Corning 1.800001 45.608618
LASFN30 Schott 1.803181 46.379894
E03-47 Corning 1.803002 46.408629
TAF3D Hoya 1.8042 46.5
N-LASF44 Schott 1.8042 46.5
TAF3 Hoya 1.8042 46.5
S-LAH65VS Ohara 1.804 46.527532
Similar Glasses (CDGM)
Glass Manufacturer nd Vd Compare
D-ZLAF50-25 CDGM 1.80225 45.452746
H-ZLAF50E CDGM 1.804 46.574487
H-ZLAF50D CDGM 1.804 46.575016
H-ZLAF1 CDGM 1.80166 44.263459
H-ZLAF2A CDGM 1.80279 46.761307
H-ZLAF69 CDGM 1.816 46.5493
H-ZLAF69A CDGM 1.816 46.556066
H-LAF52 CDGM 1.7859 44.187159
H-LAF10LA CDGM 1.788 47.491731
H-LAF54 CDGM 1.799519 42.253294
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