The refractive index(nd) of H-ZF76 is 1.95906 while the abbe number(υd) is 17.47. Comparing to the glass in the same series, H-ZF76 has the higher refractive index and lower abbe number.
Glass name | H-ZF72B | H-ZF75A | H-ZF76 | |
Refractive index | nd | 1.92286 | 1.94595 | 1.95906 |
Abbe number | υd | 18.9 | 17.98 | 17.47 |
Relative partial dispersion | Pg,F | 0.6499 | 0.6549 | 0.6566 |
Anomalous dispersion | ⊿Pg,F | 0.0377 | 0.0412 | 0.042 |
Internal transmittance | 460 | 0.954 | 0.946 | 0.936 |
400 | 0.642 | 0.546 | 0.37 | |
460 | 0.915 | 0.894 | 0.876 | |
400 | 0.41 | 0.298 | 0.137 | |
Chemical stability | RC | 1 | 1 | 1 |
RA | 1 | 1 | 1 | |
DW | 1 | 1 | 1 | |
DA | 1 | 1 | 1 | |
ROH | 1 | 1 | 1 | |
RP | 1 | 1 | 1 | |
Density | ρ(g/cm3) | 3.57 | 3.53 | 3.56 |
