Catadioptric imaging system with prolate spheroidal-shaped...

Details Catadioptric imaging system with prolate spheroidal-shaped... Catadioptric imaging system with prolate spheroidal-shaped...

2011-08-02

2011-08-02

Consilvio, Mark (Department: 2872)

Optical: systems and elements

Compound lens system

With curved reflective imaging element

Reexamination Certificate

active

07990609

ABSTRACT:
A catadioptric imaging optical system of a high numerical aperture in which various aberrations are properly corrected without using a reflection surface having an aspherical shape of high order or a reciprocal optical element. The catadioptric imaging optical system forms an image of a first plane on a second plane and includes a first imaging system for forming a first intermediate image of the first plane based on light from the first plane, a second imaging system having two concave reflection mirrors for forming a second intermediate image of the first plane based on light from the first intermediate image, and a third imaging system for forming a final image of the first plane on the second plane based on light from the second intermediate image. The two concave reflection mirrors have prolate spheroidal-shaped reflection surfaces.

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English translation of the International Preliminary Report on Patentability, dated Aug. 14, 2008.
European Patent Application issued May 12, 2009 in corresponding European Patent Application 06835158.4.
International Search Report mailed Apr. 10, 2007 in connection with International Application No. PCT/JP2006/325711.

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