Figure 3. Thick lens immersed between two optical media on index n1 and n2

From

Thick Lenses Systems between Arbitrary Index of Refraction Optical Media. A Simple Optical Model for the Human Eye

Fulvio Andres Callegari

International Journal of Physics. 2021, 9(6), 259-268 doi:10.12691/ijp-9-6-1