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. 25, 2003
Filed:
Dec. 17, 2001
Moriyasu Kanai, Saitama, JP;
Satoru Nemoto, Saitama, JP;
Pentax Corporation, Tokyo, JP;
Abstract
A telescope includes an erecting system having first, second, third and fourth reflecting surfaces from an object side, the first and second reflecting surfaces and the third and fourth reflecting surfaces facing each other at right angle, respectively. An objective lens located between the first and fourth reflecting surfaces has a positive refractive power to converge object light that is reflected by at least the first reflecting surface for forming an image. An eyepiece located between the fourth reflecting surface and an eye point, has a positive refractive power to magnify the image formed by the objective lens. The first reflecting surface is formed on a retractable mirror that can swing between a working position such that the first and second reflecting surfaces are perpendicular, and a retracted position such that a free end of the retractable mirror moves close to the second reflecting surface.