Compact fast catadioptric imager

Details Compact fast catadioptric imager Compact fast catadioptric imager

2007-05-29

2007-05-29

Amari, Alessandro (Department: 2872)

Optical: systems and elements

Having significant infrared or ultraviolet property

Lens, lens system or component

C359S663000, C359S727000, C359S728000

Reexamination Certificate

active

10951538

ABSTRACT:
A compact, optically fast catadioptric imager. In one embodiment, the catadioptric imager of this invention includes a first group of optical elements optically disposed to receive electromagnetic radiation from an object and having positive optical power, a second group of optical elements, optically disposed between the first group of optical elements and an image plane, having at least one optical surface and having positive optical power, a third group of optical elements, optically disposed between the object and the second group of optical elements, having at least one optical surface and having negative optical power, a fourth group of optical elements substantially centered along an optical axis of said second group of optical elements and having negative optical power, and a fifth group of optical elements having positive optical power.

REFERENCES:
patent: 4264136 (1981-04-01), Ogino
patent: 4398809 (1983-08-01), Canzek
patent: 4443068 (1984-04-01), Itoh
patent: 4482219 (1984-11-01), Canzek
patent: 4666259 (1987-05-01), Iizuka
patent: 4951078 (1990-08-01), Okada
patent: 5802335 (1998-09-01), Sturlesi et al.

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