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:
Apr. 18, 2000
Filed:
Jan. 24, 1997
Susumu Tamura, Sagamihara, JP;
Takanori Honda, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An optical apparatus is provided with an eyepiece, a focusing screen onto which an image is projected, a reflecting device for reflecting the light from the focusing screen to thereby cause it to enter the eyepiece in order to show the image, an illuminating device for illuminating an eye, an imaging optical system for receiving the light from the eye through the eyepiece and a certain portion of the reflecting device, and forming the image of the eye by the light from the eye, and a photoelectric converter for receiving the image of the eye. The reflecting device comprises a hollow optical part, and the light from the eye passes through the hollow portion and the mirror portion of the optical part.