Title:
PHOTOELECTRIC SENSOR, METHOD FOR MEASURING RESIN TRANSMITTANCE IN LASER RESIN WELDING, LASER RESIN WELDING METHOD, AND LASER MACHINING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/261803
Kind Code:
A1
Abstract:
This photoelectric sensor comprises: a mounting stand (33a) for mounting a workpiece (W1); a projection means (4) having a laser diode (41) and a converging lens (45); and a photodiode (52) for receiving, at a position in the same plane as the mounting stand (33a), laser light (LB) that is transmitted through a detection region (DA), the optical axis of the laser light (LB) projected from the converging lens (45) being set so that the laser light (LB) is incident in the direction orthogonal to the incidence surface of the photodiode (52), and a focal point is formed on the incidence surface of the photodiode (52).
Inventors:
OGAWA YOSHIKI
Application Number:
PCT/JP2020/019527
Publication Date:
December 30, 2020
Filing Date:
May 15, 2020
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G01J1/02; B23K26/57; B29C65/16; G01N21/59; H01S3/00; H03K17/78
Domestic Patent References:
| WO2016084309A1 | 2016-06-02 | |||
| WO2016067508A1 | 2016-05-06 |
Foreign References:
| JP2004243629A | 2004-09-02 | |||
| JP2014113606A | 2014-06-26 | |||
| JP2005114720A | 2005-04-28 | |||
| JPS53100259A | 1978-09-01 | |||
| JP2009166115A | 2009-07-30 | |||
| JP2004291344A | 2004-10-21 | |||
| JP2004243629A | 2004-09-02 | |||
| JP2007319881A | 2007-12-13 | |||
| JP2019118973A | 2019-07-22 |
Other References:
See also references of EP 3992595A4
Attorney, Agent or Firm:
Eikoh Patent Firm, P.C. (JP)
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