Freeform offner spectrometer
AssigneeRaytheon Company
InventorBenjamin James Lewis
Life of this patent
Estimating the term…
Abstract
A spectrometer is configured to form a spectrally resolved image of electromagnetic radiation from an electromagnetic radiation source. The spectrometer can include an optical guide device configured to guide electromagnetic radiation along an optical path. The optical guide device can include a first prism positioned in the optical path. The optical guide device can further include a focusing optic. The first prism can include at least one freeform prism surface that comprises at least some degree of cylindrical curvature having freeform polynomial terms formed thereon, which surface can be a substantially cylindrical, a substantially acylindrical, or a substantially flat surface having freeform polynomial terms formed thereon.
Claims21
An optical guide device configured to guide electromagnetic radiation along an optical path, the optical guide device comprising:
- a first prism positioned in the optical path;
- and
- a focusing optic positioned in the optical path;
- wherein the first prism comprises at least one freeform prism surface having at least some degree of cylindrical curvature, and having freeform polynomial terms formed thereon.
A method of configuring an optical guide device comprising:
- configuring the optical guide device to include a first prism in an optical path;
- configuring the optical guide device to include a focusing optic positioned in the optical path;
- and
- configuring the first prism to comprise at least one freeform prism surface having at least some degree of cylindrical curvature, and having freeform polynomial terms formed thereon.
An optical system comprising:
- an electromagnetic radiation inlet configured to receive electromagnetic radiation from a source;
- and
- an optical guide device configured to guide electromagnetic radiation along an optical path from the electromagnetic radiation inlet to a focal plane, the optical guide device comprising:
- a first prism positioned in the optical path;
- a focusing optic positioned in the optical path;
- wherein the first prism comprises at least one freeform prism surface having at least some degree of cylindrical curvature, and having freeform polynomial terms formed thereon.
Dependencies are inferred from the claim text.