Optical scanning apparatus of light sources with different wavelengths

An optical scanning apparatus for light sources with different wavelengths, applying to light beams corresponding to different wavelengths scanning different positions, comprising:

• a plurality of light sources, generating a plurality of light beams of different wavelengths, each of the light beams passing through a collimator lens corresponding to each of the light sources to form a plurality of parallel beams as output;
• a plurality of modulators, each of the modulators modulating an intensity and an on/off time of each of the light sources;
• an optical beam combiner, combining the parallel beams into an output beam;
• a reflective lens, reflecting the output beam generated from the optical beam combiner;
• and
• at least one f-θ lens corresponding to a single wavelength, installed on a rotating platform with a rotating apparatus, and the reflective lens disposed at the middle of the platform, each of the f-θ lens rotating continuously by the rotating apparatus to make the parallel beam passing through the optical beam combiner, the reflective lenses, and the f-θ lenses to deflect onto a scanned object and to make the light beams corresponding to different wavelengths scanning different positions.

An optical scanning apparatus for light sources with different wavelengths, applying to light beams corresponding to different wavelengths scanning the same positions simultaneously, comprising:

• a plurality of light sources, generating a plurality of light beams of different wavelengths, each of the light beams passing through a collimator lens corresponding to each of the light sources to form a plurality of parallel beams as output;
• a plurality of modulators, each of the modulators modulating an intensity and an on/off time of each of the light sources;
• an optical beam combiner, combining the parallel beams from different directions into the same direction beam which users set the numbers of the output beam;
• a plurality of first reflective lenses, reflecting the output beam generated from the optical beam combiner;
• and
• a plurality of f-θ lens sets corresponding to the light sources of different wavelengths, installed on a plurality of a rotating platforms on top of a rotating apparatus, each of the f-θ lens corresponding to each of the light sources of different wavelengths are parallel to each other and rotating continuously by the rotating apparatus to make the parallel beams passing through the optical beam combiner, the reflective lenses, and the f-θ lenses to deflect, besides one of the parallel beam, the other parallel beams reflecting by a plurality of second reflective lenses corresponding to the wavelengths of the parallel beams to make the light beams with different wavelengths scanning the same positions simultaneously.