| 摘要 |
The light beam scanning device (1) comprises light source device (2) which emits a light beam, disk-shaped refracting optical element (3) which refracts a light beam emitted from light source device (2), and drive motor (4) which rotationally drives refracting optical element (3). In light beam scanning device (1), when the light beam emitted from light source device (2) is made incident on refracting optical element (3) while having refracting optical element (3) rotated, and the light beam is refracted with refracting optical element (3) and scanned in a predetermined direction. Such light beam scanning device (1) can be downsized even when a light beam scanning is carried out at high resolution. Moreover, light beam scanning device (1) has superior temperature characteristics and can scan a light beam of stable strength.
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