Laser marker
AssigneeSCREEN Holdings Co., Ltd.
InventorYoshimi HASHIMOTO
Life of this patent
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Abstract
There is provided a technique that enables efficient and uniform laser marking. A laser marker includes a laser light source, an illumination optical system, a spatial light modulator, a projection optical system, and a scanning unit. The laser light source emits laser light. The illumination optical system shapes the laser light into a line-shaped parallel beam. The spatial light modulator includes a plurality of modulation components arranged along a long-axis direction, and modulates the parallel beam into a line-shaped modulated beam using the plurality of modulation components. The projection optical system guides the modulated beam to an object. The scanning unit scans the surface of the object with the modulated beam.
Claims7
A laser marker that radiates laser light to an object including a metal surface, to form a mark, comprising:
- a laser light source configured to emit the laser light;
- an illumination optical system configured to shape the laser light into a line-shaped parallel beam;
- a spatial light modulator including a plurality of modulation components arranged along a long-axis direction, the spatial light modulator being configured to modulate the parallel beam into a line-shaped modulated beam using the plurality of modulation components;
- a projection optical system configured to guide the modulated beam to the object;
- and
- a scanning unit configured to scan the surface of the object with the modulated beam.
Dependencies are inferred from the claim text.