公开(公告)号：US06226460B1

公开(公告)日：2001-05-01

申请号：US09506321

申请日：2000-02-18

Applicant: Masayuki Hino ,  Takaaki Tomita

Inventor： Masayuki Hino ,  Takaaki Tomita

IPC: G03B7100

CPC classification number: G02B26/007 ,  G02B26/023

Abstract: A movable filter device comprises a rotary plate for holding an optical filter, a holding plate for holding the rotary plate rotatably at a pivot point, stopper pins, and a torsion coil spring. The torsion coil spring has one end coupled to the holding plate and the other end coupled to the rotary plate, and generates a force for extending both ends thereof. The force generated by the torsion coil spring prevents the rotary plate from stopping at positions other than those defined by the stopper pins. The rotary plate has slender portions of low rigidity for absorbing the impact of collision between the rotary plate and stopper pins.

Abstract translation: 可移动过滤装置包括用于保持滤光器的旋转板，用于将旋转板可旋转地保持在枢转点处的保持板，止动销和扭转螺旋弹簧。 扭转螺旋弹簧的一端联接到保持板，另一端联接到旋转板，并且产生用于延伸其两端的力。 由扭力螺旋弹簧产生的力防止旋转板停止在止动销定义的位置以外的位置。 旋转板具有低刚度的细长部分，用于吸收旋转板和止动销之间的碰撞冲击。