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. 09, 1989
Filed:
Feb. 18, 1988
Akira Ishisaka, Hachioji, JP;
Kohei Ota, Hachioji, JP;
Konica Corporation, Tokyo, JP;
Abstract
An Albada type inverted Galileo finder which is suitable foruse with a compace lens shutter camera, which is small in size, and which is visible without occurrence of any ghost not only in an object but a finder frame. If lenses are disposed in order of negative, positive and positive from the side of an object and a reflecting surface of an Albada system is a surface on the side of the object of a positive lens, a finder which involves no ghost and is advantageous for correction of aberrations can be obtained. Furthermore, if the on-the-axis thickness of each lens is restricted to thereby provide a plastic lens, precision of molding can be improved.