公开(公告)号：US20230213650A1

公开(公告)日：2023-07-06

申请号：US18008751

申请日：2021-10-19

Applicant: LG Chem, Ltd.

Inventor： Dae Han Seo ,  Bu Gon Shin ,  Chang Yoon Lim ,  Soyoung Choo ,  Hyunjoo Son

IPC: G01S17/04 ,  G02B5/32

CPC classification number: G01S17/04 ,  G02B5/32

Abstract: A system for observing an object by using a hologram optical element is disclosed herein. In some embodiments, a system for observing an object includes an infrared (IR) light source for emitting infrared light, a hologram optical element (HOE) including an optical element film, wherein the optical element film for reflecting and diffracting the emitted infrared light, wherein infrared light of a specific wavelength from among the emitted infrared light emitted is reflected towards the object, and an IR light detector for detecting the infrared light of a specific wavelength reflected from the object.

公开(公告)号：US11383324B2

公开(公告)日：2022-07-12

申请号：US16709054

申请日：2019-12-10

Applicant: LG Chem, Ltd.

Inventor： Jin Soo Lee ,  Sung Chul Park ,  Bu Gon Shin ,  Soyoung Choo

IPC: B23K26/323 ,  B23K11/20 ,  B23K26/21 ,  G01N23/20058 ,  G01N23/203

Abstract: A method of optimizing laser welding of two different metals is disclosed herein. In some embodiments, a method for optimizing laser welding of two different metals comprising laser welding a plurality of samples comprising a first metal and a second metal to form a weld between the first metal and the second metal, the weld having a molten area, wherein each sample is laser welded using a different line energy, measuring the content of an intermetallic compound produced by the laser welding in the molten area of the weld in each sample, and determining the line energy of the laser that results in the content of the intermetallic compound produced in the molten area of the weld being less than 10%.