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:
Oct. 24, 2017
Filed:
Jul. 19, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Ryoji Kondo, Yokohama, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
The image display apparatus includes an optical system causing a light flux entering from an original image by being transmitted through a fifth surface to reflect at a fourth surface, a third surface, a first surface and a second surface and then cause the light flux to be transmitted through the first surface and exit toward an exit pupil, causing the light flux to form an intermediate image and causing optical paths to intersect with each other. The optical system satisfies 0.62≦Lf≦5.00 and 1.80≦LL≦5.00. When a distance between hit points of a central-view-angle principal ray on the surfaces is referred to as a hit point distance, Lrepresents a hit point distance between the fourth and fifth surfaces, Lrepresents a hit point distance between the first and second surfaces, and f represents a focal length of the optical system.