| 摘要 |
An optical condenser device has light sources ( 10, 20 ) and an optical combiner ( 30 ). Each light source ( 10, 20 ) includes a semiconductor laser array ( 12, 22 ), a collimator lens ( 16, 26 ) and a beam converter ( 18, 28 ). The optical combiner ( 30 ) combines the beams from the light sources ( 10, 20 ). The spread of the beams in planes perpendicular to the direction of alignment of the active layers ( 14, 24 ) is restrained by the refraction of the collimator lenses ( 16, 26 ). The transverse sections of the respective beams are rotated by substantially 90° by the beam converters ( 18, 28 ). The spread of the beams in the direction of alignment of the active layers is thus restrained and crossing of adjacent beams becomes unlikely to occur.
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