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:
Feb. 12, 1980
Filed:
Jun. 20, 1978
Klaus-Dieter Schaefer, Braunfels, DE;
Ernst Leitz Wetzlar GmbH, Wetzlar, DE;
Abstract
A mirror reflex camera having a pentaprism and an electronic rangefinder is improved by displacing the viewer axis by an angle up to 5.degree. downward with respect to the optical axis of the picture taking lens. This is accomplished by modifying the pentaprism to have a fully specular concave mirror (7b) at the lower edge of the exit surface of pentaprism (7) and by selecting the angular dimensions of the pentaprism (7) so that the viewer axis (8a) deviates by an angle beta up to 5.degree. downward with respect to the optical axis (8) which is horizontal in the ordinary operational position of the camera, and by having ocular (6) offset upward and so slanted with respect to its position when the optic axis (8) is horizontal that the ocular axis (6a) subtends an angle alpha up to 5.degree. with the optic axis (8).