| 摘要 |
PURPOSE:To make focusing simple and accurate by introducing a light image passed through a finder objective lens and a pentagonal Dachprism and a light image of a range finder into a finder eyepiece via a half mirror. CONSTITUTION:The real image of an object passed through a finder objective lens 1 is formed on the same plane as a finder frame 3 through a pentagonal Dachprism 2. The light image is observed as an erecting image through a condensor lens 4, a half mirror 5 and an eyepiece 6. The finder is designed so as to become its the magnification to 0.7. The image of a range finder is focused on the same plane as that of a light image member 12 inside a range finder window 10 put on the center of a light image member 12 through a pentagonal Dachprism 7, a range finder objective lens 8 and a fixed mirror 9 and enlarged by the eyepiece 6 for observation after passing through a light image frame 11 and the half mirror 5. Thus, focusing is simply and accurately practiced. |
