Patent ID: 8059344

Claim:
A lens system, comprising: a first lens including a first region and a second region; the first region made of a first material, and is shaped to partially focus a first band of wavelengths onto a focal plane; the second region made of a second material that is different from the first material, and is shaped to partially focus a second band of wavelengths onto the focal plane; a second lens including a third material that is different from the first material and the second material, the third material transmits both the first band of wavelengths and the second band of wavelengths, the second lens is situated between the first lens and the focal plane; wherein the second lens, in conjunction with the first region of the first lens, focuses the first band of wavelengths onto the focal plane; the second lens, in conjunction with the second region of the first lens, focuses the second band of wavelengths onto the focal plane; the second lens, in conjunction with the first region of the first lens, does not focus the second band of wavelengths onto the focal plane; and the second lens, in conjunction with the second region of the first lens, does not focus the first band of wavelengths onto the focal plane.