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. 21, 1984
Filed:
Dec. 15, 1981
Yoshichi Ohtake, Kamakura, JP;
Victor Company of Japan, Limited, Yokohama, JP;
Abstract
A single-lens reflex type viewfinder as for VTR cameras has a prism for deflecting a portion of light coming through a main camera lens along a first optical axis to pass through a viewfinder master lens along a second optical axis normal to the first optical axis, and a mirror for reflecting the deflected light portion toward a viewfinder eyepiece along a third optical axis normal to the second optical axis and parallel to the first optical axis. The mirror is disposed on an image formation point of the viewfinder master lens to keep viewfinder and picked-up camera images in agreement with each other and hence to eliminate viewfinder adjustment. To remove any deviation of the viewfinder image from the third optical axis and eliminate any inclination of the viewfinder image, the mirror and/or prism is angularly movable about the first axis, the second axis, and/or the third axis.