Patent ID: 9690081
Date: 2017-06-27
CPC Classifications: B33Y,G02B,G03B,G06T,H04N

Claim:
1. A lens system for redirecting light rays within a field of view toward a focal plane, the lens system comprising: a first lens having a first optical medium and a first non-spherical exterior surface opposite a first non-spherical interior surface, the first optical medium having a first refractive index; a second lens positioned adjacent the first lens, the second lens having a second optical medium and a second non-spherical interior surface opposite a second non-spherical exterior surface, the second optical medium having a second refractive index; and an optical medium providing a refractive interface with the first and second non-spherical interior surfaces, the optical medium having a refractive index that is different from the first refractive index and the second refractive index, the first non-spherical exterior surface, the first non-spherical interior surface, the second non-spherical interior surface, and the second non-spherical exterior surface configured so that light rays propagating through the first lens and refracted by the first non-spherical exterior surface and the first non-spherical interior surface propagate through the optical medium before refraction by the second non-spherical interior surface and the second non-spherical exterior surface and thereafter converge to a focal point between the focal plane and the second non-spherical exterior surface.