Gregory J Fitzgerald

US Patent:

20220404593, Dec 22, 2022

Filed:

Jun 15, 2022

Appl. No.:

17/841338

Inventors:

- Goleta CA, US
Gregory Fitzgerald - Marlborough MA, US

International Classification:

G02B 13/00
G02B 13/22

Abstract:

An adjustable teleconverter is provided that may be selectively adjusted between a base lens configuration and one or more tele-lens configurations without adding, removing, or replacing lenses from an optical system. In one example, a system includes a front lens group configured to form a first image at an intermediate image plane in response to radiation from a scene. The system also includes a teleconverter configured to project the first image to form a second image at a final image plane. The teleconverter comprises a relay lens group configured to be selectively positioned between the intermediate image plane and the final image plane to adjust a magnification of the second image. Additional methods, devices, and systems are also provided.