公开(公告)号：US10768049B2

公开(公告)日：2020-09-08

申请号：US16800077

申请日：2020-02-25

Applicant: KOREA FOOD RESEARCH INSTITUTE

Inventor： Gyeong-Sik Ok ,  Sung-Wook Choi ,  Hyun-Joo Chang

IPC: G01J3/42 ,  G01V8/10 ,  G02B5/00 ,  G01V8/14 ,  G01N21/3581 ,  G01V8/18

Abstract: A high resolution inspection apparatus using a terahertz Bessel beam. The high resolution inspection apparatus comprises a terahertz wave generating unit for generating a terahertz wave; a Bessel beam forming unit for forming a terahertz Bessel beam at an inspection target object using a terahertz wave incident from the terahertz wave generating unit; a first lens for changing an angle of the terahertz wave radiated, when the terahertz Bessel beam is transmitted through the inspection target object, to be smaller; a second lens for concentrating the terahertz wave passing through the first lens and toward a detection unit; and a terahertz wave detection unit for detecting the terahertz wave concentrated by the second lens.

公开(公告)号：US10955293B2

公开(公告)日：2021-03-23

申请号：US16800085

申请日：2020-02-25

Applicant: KOREA FOOD RESEARCH INSTITUTE

Inventor： Gyeong-Sik Ok ,  Sung-Wook Choi ,  Hyun-Joo Chang

IPC: G01J3/42 ,  G01N21/3581 ,  G01V8/10 ,  G02B5/00 ,  G01V8/14 ,  G01V8/18

Abstract: According to one embodiment of the present invention, a terahertz wave concentrating module can comprise: a first lens for changing a terahertz wave, which is emitted while a terahertz Bessel beam penetrates an object to be inspected, so as to have a small angle; and a second lens for concentrating, on a detector, the terahertz wave having passed through the first lens.

公开(公告)号：US11248960B2

公开(公告)日：2022-02-15

申请号：US17137881

申请日：2020-12-30

Applicant: KOREA FOOD RESEARCH INSTITUTE

Inventor： Gyeong-Sik Ok ,  Sung-Wook Choi ,  Hyun-Joo Chang

IPC: G01J3/42 ,  G01V8/10 ,  G01N21/3581 ,  G02B5/00 ,  G01V8/14 ,  G01V8/18

Abstract: A high resolution inspection apparatus using a terahertz Bessel beam. The high resolution inspection apparatus comprises a terahertz wave generating unit for generating a terahertz wave; a Bessel beam forming unit for generating a terahertz Bessel beam using the terahertz wave incident from the terahertz wave generating unit; a ring beam forming unit for forming a ring beam using the terahertz Bessel beam and concentrating the formed ring beam to an inspection target object; a scattered light detecting unit for detecting scattered light generated from the inspection target object; and a ring beam detecting unit for detecting a ring beam transmitted through the inspection target object.

公开(公告)号：US10648864B2

公开(公告)日：2020-05-12

申请号：US16344494

申请日：2016-11-23

Applicant: KOREA FOOD RESEARCH INSTITUTE

Inventor： Gyeong-Sik Ok ,  Sung-Wook Choi ,  Hyun-Joo Chang

IPC: G01J3/42 ,  G01V8/14 ,  G01N21/3581 ,  G02B5/00 ,  G01V8/18 ,  G01V8/10

Abstract: According to one embodiment of the present invention, a terahertz wave concentrating module can comprise: a first lens for changing a terahertz wave, which is emitted while a terahertz Bessel beam penetrates an object to be inspected, so as to have a small angle; and a second lens for concentrating, on a detector, the terahertz wave having passed through the first lens.