公开(公告)号：US10532427B2

公开(公告)日：2020-01-14

申请号：US14888582

申请日：2015-02-20

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Hiroshi Ohno ,  Tetsuo Sakai ,  Mitsuo Sasaki ,  Kazuyuki Masukawa ,  Takashi Obara ,  Yuji Sasaki ,  Satoshi Tsuno

IPC: G02B27/40 ,  B23K26/06 ,  B23K26/342 ,  G02B27/09 ,  G02B27/30

Abstract: An optical processing head capable of reducing the energy loss at the time of optical processing is disclosed. The optical processing head includes a first optical element that converts light emitted by a light source into first parallel light, a second optical element that is arranged downstream of the first optical element and converts the first parallel light into first divergent light, a third optical element that is arranged downstream of the second optical element and converts the first divergent light into second parallel light, and a fourth optical element that is arranged downstream of the third optical element and converts the second parallel light into convergent light which is condensed on the processing surface side.