H-ZLAF53BGT by CDGM

Preferred Medium Environmentally Friendly

H-ZLAF53BGT by CDGM is a preferred optical glass with a medium melt frequency. It transmits from 0.34 to 2.40 µm with an nd of 1.834 and a Vd of 37.210555. It has low thermal expansion (CTE of 5.9×10⁻⁶/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: 0.340–2.400 µm
Optical Properties
Refractive Index (nd) 1.834
Abbe Number (Vd) 37.210555
Dispersion Formula Sellmeier
Wavelength Range 0.365 — 2.325 µm
$$n(\lambda) = \sqrt{1 + \frac{0.302814\,\lambda^2}{\lambda^2 - 0.045592} + \frac{1.25522\,\lambda^2}{\lambda^2 - 99.9412} + \frac{1.95576\,\lambda^2}{\lambda^2 - 0.0108167}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 5.9
TCE 100/300°C (10-6/K) 7.2
Thermal Conductivity (W/mK) 0.764
Heat Capacity (J/gK) 0.501
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[9.87 \times 10^{-6} + 2(1.65 \times 10^{-8})\,\Delta T + 3(-3.22 \times 10^{-11})\,\Delta T^2 + \frac{8.9 \times 10^{-7} + 2(1.12 \times 10^{-9})\,\Delta T}{\lambda - 0.243}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 4.54
Relative Cost 9.3
Mechanical Properties
Young's Modulus (GPa) 110.43
Poisson's Ratio 0.313
Knoop Hardness (kgf/mm²) 613.0
Chemical Resistance
Climatic Resistance 1
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
S-LAH60V Ohara 1.833999 37.206855
LASFN14 Sumita 1.834 37.2
S-LAH60MQ Ohara 1.833999 37.172099
LAH60 Ohara 1.834 37.166863
S-LAH60 Ohara 1.834 37.160487
K-LaSFn14 Sumita 1.834 37.3
N-LASF40 Schott 1.83404 37.3
M-NBFD10 Hoya 1.83441 37.29
MP-NBFD10-20 Hoya 1.83461 37.29
NBFD10 Hoya 1.834 37.34
Similar Glasses (CDGM)
Glass Manufacturer nd Vd Compare
H-ZLAF53B CDGM 1.834 37.210555
H-ZLAF3 CDGM 1.855449 36.59805
D-ZLAF85LN-25 CDGM 1.84443 40.067973
D-ZLAF85LN CDGM 1.84558 40.094322
D-ZLAF85A-25 CDGM 1.8511 40.055609
D-ZLAF85A CDGM 1.85222 40.10819
D-ZLAF85L-25 CDGM 1.8526 40.534071
D-ZLAF85LS-25 CDGM 1.85344 40.557917
D-ZLAF85L CDGM 1.8537 40.579411
D-ZLAF85LS CDGM 1.8545 40.593546
Compare Glasses
    Compare Selected