Patent ID: 8300291
Filing Date: 2012-10-30
Classification: G02B,G03B,H04N

Abstract:
1. An optical scanning device, comprising: at least one laser light source for emitting a laser light; a deflection section for deflecting and scanning the laser light emitted from the at least one laser light source; and a light guide plate of which a side surface is irradiated with the laser light deflected and scanned by the deflection section, wherein the laser light with which the side surface of the light guide plate is irradiated enters the light guide plate through the side surface and exits the light guide plate through a front surface of the light guide plate, the laser light is scanned at the side surface of the light guide plate with a longitudinal direction of the side surface as a scanning direction, the at least one laser light source includes a multi-mode fiber light source, or a broad-stripe semiconductor laser light source which is arranged such that a vertical direction of a stripe structure is parallel to the scanning direction, and an exit pupil in a thickness direction, which is perpendicular to the scanning direction, is formed at least in one area on the side surface of the light guide plate.