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:
May. 06, 1997
Filed:
Apr. 14, 1994
Masaki Higashihara, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A camera with a mirror device comprises a first mirror, i.e., a main mirror, device for reflecting object light, and a second mirror, i.e., a sub-mirror, device for reflecting light transmitted through the first mirror device to another device, i.e., a focus detector. The second mirror device has a reflective layer formed as a sub-mirror surface formed directly on a base member. With the sub-mirror surface formed by, e.g., evaporation directly on a partial protruded area of the base member, the manufacture process is facilitated, a sub-mirror area can be increased, and reliability and durability are improved because the sub-mirror will not experience variations in its mounting angle or be subject to peeling-off from a separate base member.