Quasi-monocentric-lens-based multi-scale optical system
AssigneeDuke University
InventorsDaniel Marks, David Jones Brady
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Abstract
Optical systems based on an objective lens comprising one or more plastic lens elements are disclosed. The inclusion of plastic lens element reduces one or more of system cost, size, weight, and/or complexity. The chromatic performance of some imaging systems in accordance with the present invention is improved by incorporation of a diffractive surface into the entry surface of the objective lens.
Claims30
An imaging system comprising an objective lens that is operative for providing a first image of a scene, the objective lens comprising:
- a first lens element that includes a first polymer;
- a first surface, wherein each point on the first surface is equidistant from a center point of the objective lens;
- and
- a second surface that is a diffractive surface.
An imaging system comprising an objective lens that is operative for providing a first image of a scene, the objective lens comprising:
- a first lens element that includes PMMA;
- a second lens element that includes polycarbonate, the second lens element being between the first lens element and the scene, and the second lens element including a first surface that is a diffractive surface;
- and
- a third lens element that includes PMMA, the third lens element being between the first lens element and the first image.
An imaging system comprising an objective lens that is operative for providing a first image of a scene, the objective lens having a plurality of surfaces that are concentric about a center point, and the objective lens comprising a first surface that is reflective, the first surface including the center point.
Dependencies are inferred from the claim text.