Patent ID: 7085485
Filing Date: 2006-08-01
Classification: G03B

Abstract:
1. An intermediate adapter used in a camera system, the camera system comprising: a first interchangeable lens; a second interchangeable lens including a protruding portion protruding toward an image plane from its mount reference surface whose protruding amount is larger than that of the first interchangeable lens, and having a flange back equal to that of the first interchangeable lens; a first camera on which the first interchangeable lens is mounted, the first camera including a first wall portion inside its mount and preventing mounting of the second interchangeable lens by the protruding portion of the second interchangeable lens contacting the first wall portion; and a second camera on which the first interchangeable lens and the second interchangeable lens are selectively mounted, the second camera including a second wall portion provided inside its mount at a position retreated from the protruding portion of the second interchangeable lens, the intermediate adapter comprising: a third wall portion provided inside its mount at a position retreated from the protruding portion of the second interchangeable lens, wherein the intermediate adapter is mounted between the first interchangeable lens and the first and second cameras, and is mounted between the second interchangeable lens and the first and second cameras.