Patent ID: 8917435

Claim:
An optical scanner comprising: a light reflecting section; a movable plate provided to the light reflecting section; four link sections connected to the movable plate; and a supporting section supporting the four link sections, the four link sections are provided on an outer circumference of the movable plate at 90-degree intervals along a circumferential direction of the movable plate in an X-Y plane view, each link section includes: a turnable drive section, and a shaft section which connects the movable plate and the turnable drive section, the shaft section being bendable and deformable in a thickness direction of the movable plate by turning the turnable drive section, and the shaft section including a stress alleviating section, wherein the stress alleviating sections each have a pair of deformation sections, and one of the pair of deformation sections is connected to a movable plate-side shaft section, and the other of the pair of deformation sections is connected to a drive section-side shaft section, and the stress alleviating sections each have a non-deformable section provided between the pair of deformation sections, the non-deformable section extending in a direction parallel to an extending direction of the deformation section, and being torsionally non-deformable about a central axis thereof.