Patent ID: 6870151

Claim:
A shutter secured to a moving object made of a first material, comprising: a shutter plate crossing a light beam in a motion of said moving object; and a shutter holder including a base portion made of a second material and formed with a hollow space through which a fixing member made of a third material harder than said first and second materials is driven into said moving object for securing said shutter holder to said moving object, a coupling portion formed at a first sub-portion of said base portion and connected to said shutter plate so as to keep said shutter plate in a predetermined attitude with respect to said moving object and a tie portion projecting from a second sub-portion of said base portion into said hollow space, pressed to said moving object by means of said fixing member and having a small flexural rigidity for absorbing a deformation of said moving object due to said fixing member excessively driven thereinto without changing said attitude of said shutter plate.