Back to results
US 5,706,137 AGranted
Wide field of view imaging system
OwnerShawn L. Kellyinventor
Life of this patent
Estimating the term…
Abstract
A wide FOV imaging system (10) includes an objective lens (14), a convergent reflective element (18) positioned proximate an intermediate image (16) formed by the objective lens, and a re-imaging lens (20) for re-imaging the intermediate image. The present invention significantly improves image fidelity while minimizing optical components by utilizing a convergent reflective element proximate the intermediate image to reverse the propagation of aberrations produced by the objective lens (14) to, as a result, significantly cancel or reduce the aberrations contributed by the re-imaging lens.
Claims9
An optical imaging system comprising:
- an object imaging means for forming an intermediate image of an object image, said object imaging means producing particular aberrations in the intermediate image;
- means for reversing at least some of the aberrations in the intermediate image comprising a convergent reflective medium positioned proximate the intermediate image;
- and
- a re-imaging means for re-imaging the intermediate image reflected by said reflective medium, said re-imaging means producing image aberrations similar to the aberrations produced by said object imaging means, thereby substantially cancelling the aberrations reversed by said reversing means in the re-imaged intermediate image.
1 more element
Dependencies are inferred from the claim text.