| 摘要 |
PURPOSE:To prevent light reversely made incident from a semitransparent part from arriving at a film surface by providing a projection part for shading light, which projects to a second movable mirror side, on a first movable mirror. CONSTITUTION:The projection part for shading light 3c which is obtained by projectingly forming the cross-section of one part of the supporting frame 3 of the first movable mirror 1 in a V-shaped state and almost in parallel with the axis supporting part 10 of the second movable mirror 7 on the frame 3 of the mirror 1 is provided between the supporting part 10 and the axis supporting part 4 of the mirror 1 itself. At a photographing time, the mirror 1 is elevated and the mirror 7 is also elevated at the same time so as to cover an opening 3a. At this time, the light which is reversely made incident from a finder and which is going to enter a film side from a gap between the light shading pieces 9a and 9b of the mirror 7 and the supporting frame 3 of the mirror 1 is obstructed because the pieces 9b and 9b are alternately positioned on the lower side of the opening 3a. Besides, the light reversely made incident from the upper side of the opening 3a is obstructed by the piece 9a and the newly provided projection part 3c. |
