Patent ID: 11904406
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A laser processing head comprising:
a housing including an optical path of a processing laser light;
a transparent protector configured to be detachably fixed to the housing, to pass the processing laser light, and to suppress dust entering into the housing, the dust being generated from the work material irradiated with the processing laser light; and
a temperature sensor configured to detect a temperature of the transparent protector,
wherein
the processing laser light includes a near-infrared light,
the transparent protector has a glass plate having a portion configured to pass the processing laser light, and
the temperature sensor includes an infrared radiation thermometer, the infrared radiation thermometer being configured to optically detect a temperature of the glass plate by detecting a peak wavelength of a far-infrared light generated by a black-body radiation from the dust adhering to the glass plate,
wherein
the glass plate includes:
an exposure region configured to pass the processing laser light; and
a non-exposure region configured not to pass the processing laser light, and
the exposure region is connected to the non-exposure region,

the temperature sensor optically detects a temperature of the glass plate in the non-exposure region, the temperature being transmitted from the exposure region to the non-exposure region in the glass plate, and
the housing includes a shade configured to block a light coming into the temperature sensor from the glass plate in the exposure region.