Patent ID: 11971504
Assignee: PIONEER CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 5:
6. An irradiation device comprising:
a plurality of irradiation units which emit electromagnetic waves; and
a control unit which controls the plurality of irradiation units,
wherein the control unit controls outputs a plurality of first periodic signals for respectively controlling movements of a irradiation directions of the electromagnetic waves from the plurality of irradiation units to a first direction, and a plurality of second periodic signals for respectively controlling movements of the irradiation directions of the electromagnetic waves to a second direction in the plurality of irradiation units,
wherein periods of the plurality of first periodic signals are the same as each other,
wherein the control unit outputs the second periodic signals for a plurality of periods during outputting the first periodic signals for one period,
wherein an effective repetition number of the movement of the irradiation direction to the second direction while the irradiation direction is moved one period to the first direction is the same for the plurality of irradiation units,
wherein a difference in the effective repetition numbers of the second periodic signals before a reference point in each period of the first periodic signal is less than 1 between the plurality of irradiation units, and
wherein the electromagnetic wave is not emitted from the irradiation device during a time of movement to the second direction that is not counted as the effective repetition number.