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

摘要

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