Lantal 1.9
The extremely high refractive
index of 1.893 is achieved by the addition of lanthanum
and niobium to the glass melt. |
Lantal 1.9
The extremely high refractive
index of 1.893 is achieved by the addition of lanthanum
and niobium to the glass melt. |
The
high index lenses Lantal 1.9 have been available from
Carl Zeiss since 1995. In the correction of high myopia,
Lantal 1.9 lenses allow a reduction in edge thickness,
the like of which the inventors of Punktal never even
dreamed of.