Projection optical system

Details Projection optical system Projection optical system

2004-11-25

2009-02-17

Lester, Evelyn A. (Department: 2873)

Optical: systems and elements

Having significant infrared or ultraviolet property

Lens, lens system or component

C359S649000, C359S650000, C359S656000, C359S660000, C359S682000, C359S781000

Reexamination Certificate

active

07492509

ABSTRACT:
A projection optical system comprises a plurality of lenses disposed along an optical axis of the projection optical system; wherein the plurality of lenses is dividable into four non-overlapping groups of lenses of positive and negative refractive powers, wherein the following relation is fulfilled:2·y·NA·1k·∑i=1k⁢φi≥V1wherein:y is half a diameter in mm of a maximum image field imaged by the projection optical system,NA is a maximum numerical aperture on a side of the second object,φiis a refractive power in mm−1of the ithlens,k is a total number of lenses of the projection optical system,and wherein V1is greater than 0.045.

REFERENCES:
patent: 5969803 (1999-10-01), Mercado
patent: 6445510 (2002-09-01), Schuster et al.
patent: 6891683 (2005-05-01), Schuster
patent: 2002/0122164 (2002-09-01), Schuster et al.
patent: 2002/0186355 (2002-12-01), Omura
patent: 2003/0030916 (2003-02-01), Suenaga
patent: 2003/0147061 (2003-08-01), Omura
patent: 2004/0075894 (2004-04-01), Shafer et al.
patent: 2005/0190455 (2005-09-01), Rostalski et al.
patent: 2005/0231813 (2005-10-01), Rostalski et al.
patent: 2007/0019301 (2007-01-01), Schuster
patent: 2007/0109659 (2007-05-01), Rostalski et al.
patent: 2007/0188880 (2007-08-01), Schuster
patent: 199 55 984 (2001-05-01), None
patent: 1 139 138 (2001-10-01), None
patent: 1 245 984 (2002-10-01), None
patent: WO 03/050587 (2003-06-01), None
patent: WO 03/075049 (2003-09-01), None
patent: WO 03/075096 (2003-12-01), None
patent: WO 2005/019878 (2005-03-01), None
patent: WO 2005/054956 (2005-10-01), None

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