| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical scanner, even when a maximal deflection angle of a movable plate for reflecting light is changed, capable of retaining a detection accuracy of the maximal deflection angle. <P>SOLUTION: An optical scanner 1 includes: a movable plate 311a that is constituted of a plate-like body, includes a light reflection part 311e provided on one surface and reflecting display light LL", turns about a rotational central axis J1 and can vary a measure of the maximal deflection angle; and turning detecting means 2 for detecting that the movable plate 311a rotationally turns at the maximal deflection angle. The turning detection means 2 includes: a light source 21 for applying laser light SS to the light reflection part 311e; a light receiving part 22 for receiving the reflected light formed by reflecting the laser light SS from the light source 21, on the light reflection part 311e; and a displacement drive part for changing the position of the light source 21 according to the maximal deflection angle of the movable plate 311a. <P>COPYRIGHT: (C)2013,JPO&INPIT |
