| 摘要 |
PURPOSE:To adjust the angle of a quick return mirror easily and finely by providing a mechanism which adjusts the stop position of a mirror mechanism which rotates around a shaft parallel to the optical axis of a camera. CONSTITUTION:The mirror receiver 2 is fitted to a mirror frame 5 rotatably around a pin 22 and displaced elastically by a leaf spring 3 so that an eccentric pin 41 abuts on the reverse surface of the mirror frame 5 all the time. The mirror frame 5 is displaced with spring force in the opposite direction from the moving-away direction around a shaft 7. The 45 deg. initial angle of the mirror 1 to the optical axis O is adjusted easily and finely by rotating an adjusting body 4 and changing the reverse surface abutting position of the eccentric pin 4a on the mirror frame 5. Further, the initial position of the start of moving- away rotation is also adjusted easily and finely by rotating an adjusting screw 6 which abuts on the tip part 6a of a stopper 52.
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