The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 02, 2010
Filed:
Nov. 03, 2005
Tomiei Kuwa, Musashino, JP;
Tomiei Kuwa, Musashino, JP;
Konica Minolta Opto, Inc., Hachioji-shi, JP;
Abstract
In an oblique projection optical system for performing enlargement projection from a primary image surface on the reduction side to a secondary image surface on the enlargement side, at least one reflective surface having an optical power is provided, and, assuming that of the aforementioned surfaces, the reflective surface located on the most secondary image surface side in the optical path is a first curved reflective surface, the first curved reflective surface has a portion having a positive optical power and a portion having a negative optical power.
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