| 摘要 |
<p>PROBLEM TO BE SOLVED: To finely control an index display position over a wide area by moving/displaying an index selected from among plural indexes which can be displayed, in an arbitrary position in the screen of a finder. SOLUTION: A hole is opened at the center of a fixing part for a mask 11, in a movable base plate 12 and projected light which is emitted from light sources 8-10 and limited into an index shape by the mask 11 passes through the hole, to be projected toward a half mirror 6 and then, reflected toward an eyepiece. A photographer can observe the projected light (index), in such a manner that it is overlapped with a subject, by the half mirror 6. When a fixed current flows through a coil 15, the movable base plate 12 is moved in the direction of P against the energizing force of tension coil springs 17-20 by electromagnetic force and an index-projected position is vertically moved in the screen of the finder. When a current flows through a coil 16, the movable base plate 12 is moved in the direction of Y against the energizing force of the tension coil springs 17-20 and the index-projected position is horizontally moved in the screen of the finder.</p> |
