A lens triplet consisting of two identical aspherical acrylic lens elements and a liquid lens element is well-corrected for chromatic aberration and for spherochromatism, and is diffraction limited over the visible spectrum. The liquid lens element is made of an optical liquid selected because of its...http://www.google.fr/patents/US4911538?utm_source=gb-gplus-shareBrevet US4911538 - Lens system comprising plastic and liquid lens elements with aspherical surfaces
Lens system comprising plastic and liquid lens elements with aspherical surfaces
