초록 ▼

A refractive inverse telephoto optical system (10) has a first lens doublet (12), a Pechan prism assembly (14) and a second lens doublet (16). The Pechan prism assembly (14) is spaced between the front negative doublet (12) and the rear positive doublet (16). The Pechan prism assembly (14) may be ro

A refractive inverse telephoto optical system (10) has a first lens doublet (12), a Pechan prism assembly (14) and a second lens doublet (16). The Pechan prism assembly (14) is spaced between the front negative doublet (12) and the rear positive doublet (16). The Pechan prism assembly (14) may be rotated and, as rotation occurs, the associated linear detector array is rotated around within the optical field of view.

대표청구항 ▼

A refractive optical system comprising: first lens means for receiving light from a scene; prism means for redirecting said light, said prism means including a singlet lens and being positioned to receive light from said first lens means, said prism means enabling scanning of an ultra wide field of

A refractive optical system comprising: first lens means for receiving light from a scene; prism means for redirecting said light, said prism means including a singlet lens and being positioned to receive light from said first lens means, said prism means enabling scanning of an ultra wide field of view of said scene; second lens means for focusing said light on a viewing plane, said second lens means positioned to receive light from said prism means such that said ultra wide field of view of said scene is focused on a detection plane.