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:
Aug. 11, 1987
Filed:
Dec. 24, 1985
Ryusho Hirose, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An off-axis imaging optical system, includes: a first imaging optical system including a reflection optical element and a refraction optical element; a second imaging optical system including a reflection optical element and a refraction optical element, wherein the second imaging optical system is disposed with respect to the first imaging optical system so as to reimage an image formed by the first imaging optical system; wherein one of the first and second imaging optical system has unit magnification or enlarging magnification imaging power, and the other imaging optical system has a reducing magnification imaging power, so as to provide a reducing magnification power as a whole.