Abstract: A laser marker includes a laser light source; a scanner configured to scan laser light, from the laser light source, outward; a first housing accommodating the laser light source; a second housing accommodating the scanner, the second housing being rotatable with respect to the first housing; a sensor configured to output a detection signal; and a controller configured to: based on receiving the detection signal indicating that the rotation position of the second housing is either in a first or second rotation position from the sensor, control the laser light source to emit the laser light outward; and based on receiving the detection signal, not indicating that the rotation position of the second housing is either in the first or second rotation position, control the laser light source not to emit the laser light outward.

Abstract: This antenna includes a first plate-shaped conductor, and a columnar conductor provided at a plate surface of the first plate-shaped conductor so as to protrude therefrom. A distal end of the columnar conductor has a feeding point, and a sectional area of a cross-section of the columnar conductor along the plate surface is larger than an area of an end surface of the distal end.

Abstract: An antenna device includes an antenna surface provided with an antenna conductor, a ground surface opposed to the antenna surface and provided with a ground conductor, and a stub in which a plurality of transmission lines having different line widths are connected to each other in series. The stub is located in approximately the same plane as the antenna surface or between the antenna surface and the ground surface.

Abstract: A laser marker includes a laser light source; a scanner configured to scan laser light, from the laser light source, outward; a first housing accommodating the laser light source; a second housing accommodating the scanner, the second housing being rotatable with respect to the first housing; a sensor configured to output a detection signal; and a controller configured to: based on receiving the detection signal indicating that the rotation position of the second housing is either in a first or second rotation position from the sensor, control the laser light source to emit the laser light outward; and based on receiving the detection signal, not indicating that the rotation position of the second housing is either in the first or second rotation position, control the laser light source not to emit the laser light outward.

Abstract: An antenna device includes an antenna surface provided with an antenna conductor, a ground surface opposed to the antenna surface and provided with a ground conductor, and a stub in which a plurality of transmission lines having different line widths are connected to each other in series. The stub is located in approximately the same plane as the antenna surface or between the antenna surface and the ground surface.