Laser Welding Apparatus and Laser Welding Method
US-2015360319-A1 · Dec 17, 2015 · US
Laser working method
US9012805B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9012805-B2 |
| Application number | US-44411907-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 26, 2007 |
| Priority date | Oct 3, 2006 |
| Publication date | Apr 21, 2015 |
| Grant date | Apr 21, 2015 |
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Abstract
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A converging point of processing laser light is made to accurately follow a laser light irradiation surface of an object to be processed. An object to be processed 1 is irradiated with measuring laser light along a line to cut 5 , astigmatism is added to a reflected light component of the measuring laser light reflected by a front face 3 of the object 1 irradiated with the measuring laser light, a displacement sensor signal corresponding to a converged light image of the reflected light component having the astigmatism added thereto is detected, and the displacement sensor signal is made to become a feedback reference value corresponding to the quantity of the reflected light component, so as to locate the converging point of the processing laser light at a predetermined position with respect to the front face 3 . This allows tire converging point of the processing laser light to follow the front face 3 of the object 1 reliably and accurately even when an area exhibiting an extremely low reflectance to the measuring laser light exists in a part of the front face 3 and lowers the quantity of the reflected light component of the measuring laser light.
First claim
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The invention claimed is: 1. A laser processing method of irradiating a planar object to be processed with processing laser light while locating a converging point within the planar object, so as to form a modified region to become a cutting start point within the planar object along a line to cut the planar object, the method comprising: a height setting step of irradiating the planar object with a measuring laser light, adding astigmatism to a reflected light component of the me…
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Operations & Transport · mapped topic
- B23K26/046Primary
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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- What does patent US9012805B2 cover?
- A converging point of processing laser light is made to accurately follow a laser light irradiation surface of an object to be processed. An object to be processed 1 is irradiated with measuring laser light along a line to cut 5 , astigmatism is added to a reflected light component of the measuring laser light reflected by a front face 3 of the object 1 irradiated with the measuring lase…
- Who is the assignee on this patent?
- Atsumi Kazuhiro, Kuno Koji, Suzuki Tatsuya, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification B23K26/046. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Apr 21 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).