The refractive index(nd) of H-ZLaF54A is 1.81600 while the abbe number(υd) is 46.55. Comparing with H-ZLaF50 material，H-ZLaF54A material has the higher refractive index. And H-ZLaF54A material has the lower cost than H-ZLaF54 material.
Material Name | H-ZLaF50 | H-ZLaF54 | H-ZLaF54A | |
Refractive index | nd | 1.80400 | 1.81600 | 1.81600 |
Abbe number | υd | 46.58 | 46.55 | 46.55 |
Relative partial dispersion | Pg,F | 0.5567 | 0.5551 | 0.5574 |
Anomalous dispersion | ⊿Pg,F | -0.0095 | -0.0112 | -0.0089 |
Internal transmittance | 460 | 0.991 | 0.996 | 0.992 |
400 | 0.973 | 0.966 | 0.971 | |
370 | 0.918 | 0.942 | 0.908 | |
Chemical stability | RC | 1 | 1 | 1 |
RA | 2 | 2 | 1 | |
DW | 1 | 1 | 1 | |
DA | 3 | 3 | 3 | |
ROH | 1 | 1 | 1 | |
RP | 1 | 1 | 1 | |
Density | ρ(g/cm3) | 4.47 | 5.04 | 4.99 |
