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US 6,486,995 B2Granted
Vibration-resisting structure of optical scanner
AssigneeDenso Corporation
InventorsHideaki Nishikawa, Nobuaki Kawahara, Takeshi Matsui, Makoto Inomata
Life of this patent
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Abstract
An optical scanner and a two-dimensional scanning device using the same are provided. The optical scanner includes a scanning mechanism and a swing support. The swing support is designed to support the scanning mechanism on a housing so as to allow the scanning mechanism to swing and made up of a plurality of springs. The springs are so constructed so as resist unwanted vibrations acting on the optical scanner in directions different from a scan direction, thereby ensuring a stable scan of a light beam at all the time.
Claims15
An optical scanner comprising:
- a housing including a pair of arms extending in the same direction;
- a scanning mechanism constructed to be swingable about a given swing line to emit a light beam for scanning a given angular range;
- a support supporting said scanning mechanism on said housing so as to allow said scanning mechanism to swing, said support including a pair of elastic plates surrounded by the arms of said housing, each of the elastic plates having a housing-attachment strip and a scanning mechanism-attachment strip, the housing-attachment strip having a bent end attached to an end of one of the arms of said housing, the scanning mechanism-attachment strip having a bent end attached to said scanning mechanism, the elastic plates being arranged adjacent each other so that ridges defined by bends of the ends of the housing-attachment strips and the scanning mechanism-attachment strips are arrayed along a line;
- and
- a driver swinging said scanning mechanism about the line along which the ridges of the housing-attachment strips and the scanning mechanism-attachment strips are arrayed for directing the light beam to the given angular range.
2 more elements
Dependencies are inferred from the claim text.