Investigation on Rebound amount of Double Collision Method by DSLR Internal Mirror Model

Abstract

This research investigates with rebound vibration behavior of mirror inside a DSLR camera. The differences of the mirror vibration phenomena are tested by using the rectangular-metal-plates model. This aluminum alloys mirror model is fixed by a bolt and a nut on the horizontal rotatable shaft. In collision experiment, the bonded mirror model swings down freely and rotates about a shaft. Vibration behavior of mirror models is measured by laser displacement meter. As a result, the variation of maximum rebound angles has relationship with left and right stopper positions which manipulated by vertical and horizontal axis. The rebound angle is suppressed by changing the stoppers position in controlled behavior. In the experiment condition which is measured the lowest rebound angle, the vertical axis position-controlled stopper is at its optimum potential at 0.5[mm] height difference in regard to its opposite stopper position.