Patent ID: 6829110
Filing Date: 2004-12-07
Classification: G02F,H04N

Abstract:
An adjustment mechanism for adjusting a mounting angle of an optical polarizing element, comprising:two frames, the optical polarizing element being supported by one of the two frames, one of the two frames being pivotally supported on an axis of pivot so that it can turn with respect to the other of the two frames, and each of the two frames including a main body and a lug extending in a direction perpendicular to the main body; and an adjustment member that operates to pivot one of the two frames about a pivoting axis with respect to the other of the two frames, the lug of one of the two frames including an opening continuous with a loose engagement portion that receives the adjustment member, the lug of the other of the two frames received in the opening and having a hole in a position in alignment with the loose engagement portion, the adjustment member being a screw, the screw being screwed into the one of the two frames while being inserted into the other of the two frames, the screw having a shoulder portion, and the loose engagement portion being held between a head of the screw and the shoulder portion.