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. 05, 2019
Filed:
Jan. 18, 2013
Nikon Corporation, Chiyoda-ku, Tokyo, JP;
Satoshi Arai, Kawasaki, JP;
Nikon Corporation, Tokyo, JP;
Abstract
A telescopic optical system that can be compact and lightweight is provided, and an optical apparatus including the telescopic optical system is also provided. A telescopic optical system, which is used in a telescope and other optical apparatus, includes the following optical systems arranged from an object side: an objective optical system; and an erecting optical system, which erects an image formed by the objective optical system, and the erecting optical systemincludes a first reflection mirror, which is a first reflection member and has a reflection surface that reflects light from the objective optical system, a second reflection mirror, which is a second reflection member and has a reflection surface that reflects the light reflected off the first reflection mirror, and a roof prism, which is a third reflection member, has at least three surfaces including at least one roof surface, uses one of the surfaces as a light incident surface and another one of the surfaces as a light exiting surface, and causes the light reflected off the second reflection mirrorto be incident through the light incident surface, to be reflected off the surfaces, and then to exit through the light exiting surface.