Patent ID: 9291809
Filing Date: 2016-03-22
CPC Classification: F41G,G02B

Claim Text:
1. A scanning telescope configured for installation in a missile and comprising: a primary mirror configured to receive electromagnetic radiation via a system aperture located proximate a nose of the missile and to reflect the electromagnetic radiation; a secondary mirror optically coupled to the primary mirror and configured to receive and further reflect the electromagnetic radiation reflected from the primary mirror; a tertiary mirror optically coupled to the secondary mirror and configured to receive and further reflect the electromagnetic radiation reflected from the secondary mirror, the tertiary mirror further configured to be movable over a range of angular tilt relative to an optical axis of the scanning telescope to scan a field of view of the scanning telescope over a scan range; and a quaternary mirror optically coupled to the tertiary mirror and configured to receive the electromagnetic radiation reflected from the tertiary mirror and to reflect and focus the electromagnetic radiation onto a focal plane of the scanning telescope; wherein the primary, secondary, tertiary, and quaternary mirrors are axisymmetric about the optical axis, a size and shape of the primary, secondary, tertiary, and quaternary mirrors being selected to configure the scanning telescope for installation in the missile; and wherein the primary, secondary, tertiary, and quaternary mirrors are fabricated from a same material, the material being selected from a group consisting of single crystal silicon, silicon carbide, aluminum, and Beryllium.