公开(公告)号：US20240091880A1

公开(公告)日：2024-03-21

申请号：US18522873

申请日：2023-11-29

Applicant: TOYOKOH Co.,Ltd.

Inventor： Kenjiro MOMI ,  Manabu HARAGUCHI ,  Momo TOSUE

IPC: B23K26/082

CPC classification number: B23K26/0821

Abstract: A laser irradiation apparatus irradiates an irradiation object with a laser beam. The apparatus comprises scanning pattern formation sections that change at least either of an emitting direction and a shift amount (size) of a laser beam periodically so that a position irradiated with a laser beam moves periodically along a predetermined scanning pattern on a predetermined plane. And the apparatus comprises an irradiation control section that stops irradiation of a laser beam directed to an excessive irradiation prevention area set in some area in the scanning pattern or makes an intensity of the laser beam lower in comparison with an intensity of a laser beam directed to an area other than the excessive irradiation prevention area.

公开(公告)号：US20230019043A1

公开(公告)日：2023-01-19

申请号：US17780278

申请日：2020-11-26

Applicant: TOYOKOH CO.,LTD.

Inventor： Kenjiro MOMI ,  Kazuhisa FUJITA ,  Manabu HARAGUCHI ,  Daisuke MORI ,  Momo TOSUE

IPC: G01N21/17 ,  H04R1/08 ,  H04R1/40 ,  H04R3/00

Abstract: Disclosed is a laser irradiation state diagnosing method which allows accurately diagnosing a laser irradiation state. When irradiating a laser beam so that an irradiation spot scans the surface of the irradiation object, acoustic information in vicinity of the irradiation spot is acquired. And based on characteristics of the acoustic information, such as an intensity of a component of a specific frequency band or a frequency band distribution, a state of peeling of the adhered substances existing on the surface of the irradiation object is determined.