Patent ID: 11933738
Assignee: KEYENCE CORPORATION
Field: Measurement (Instruments)
Classification: CPC B  G | IPC B  G

Claim 6:
7. The marking system according to claim 1, further comprising:
a housing that includes at least the laser light output section and the laser light scanning section provided inside;
a power monitor that detects an output of the laser light output from the laser light output section;
a distance measuring mechanism that is provided inside or outside the housing and measures a distance from the housing to the workpiece;
an image processing section that identifies a position of the workpiece when viewed along an area that is two-dimensionally scanned by the laser light scanning section on the captured image generated by the image acquisition section;
a light-transmissive window which is provided in the housing of the laser marker and through which the laser light two-dimensionally scanned by the laser light scanning section passes; and
a stain detection section that detects a stain in the light-transmissive window,
wherein the history storage section stores, as the plurality of types of state information, at least one or more of the output of the laser light detected by the power monitor, the distance to the workpiece measured by the distance measuring mechanism, the position of the workpiece identified by the image processing section, and the stain detected by the stain detection section.