公开(公告)号：US20180160997A1

公开(公告)日：2018-06-14

申请号：US15827708

申请日：2017-11-30

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Guoping Zhu ,  Qitian Miao ,  Junli Li ,  Xiaoli Zhang

IPC: A61B6/00 ,  A61B6/03 ,  G02B27/30 ,  G21K1/02 ,  G21K1/12 ,  G01N23/046

CPC classification number: A61B6/583 ,  A61B6/03 ,  G01N23/046 ,  G02B27/30 ,  G21K1/02 ,  G21K1/025 ,  G21K1/12

Abstract: There are disclosed a collimator, a radiation emitting assembly and an inspection apparatus. The collimator is configured to collimate radiation from a radiation emitter. One of the collimator and the radiation emitter is provided with a protrusion portion and the other is provided with a recess portion such that the protrusion portion is capable of being placed within the recess portion and the radiation emitter and the collimator are allowed to be arranged close to and connected with each other, and that the radiation passes through passages in the protrusion portion and the recess portion from the radiation emitter to the collimator.

公开(公告)号：US10658088B2

公开(公告)日：2020-05-19

申请号：US15277828

申请日：2016-09-27

Applicant: Tsinghua University ,  NUCTECH COMPANY LIMITED

Inventor： Kejun Kang ,  Ying Li ,  Jianmin Li ,  Yulan Li ,  Guoping Zhu

IPC: G21K1/04 ,  G01V5/00

Abstract: A collimator and an inspection system having the collimator are disclosed. The collimator includes: a collimator body including a first part and a second part; a collimating slit formed between the first part and the second part and having a first end and a second end in a longitudinal direction thereof; and a shielding member which is movable relative to the collimator body such that both a beam divergent angle and an elevation angle of a ray beam propagating through the collimating slit are varied. An inspection system and an inspection method for scanning a vehicle are further disclosed.

公开(公告)号：US10939892B2

公开(公告)日：2021-03-09

申请号：US15827708

申请日：2017-11-30

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Guoping Zhu ,  Qitian Miao ,  Junli Li ,  Xiaoli Zhang

IPC: A61B6/03 ,  G21K1/02 ,  G02B27/30 ,  A61B6/00 ,  G01N23/046 ,  G21K1/12

Abstract: There are disclosed a collimator, a radiation emitting assembly and an inspection apparatus. The collimator is configured to collimate radiation from a radiation emitter. One of the collimator and the radiation emitter is provided with a protrusion portion and the other is provided with a recess portion such that the protrusion portion is capable of being placed within the recess portion and the radiation emitter and the collimator are allowed to be arranged close to and connected with each other, and that the radiation passes through passages in the protrusion portion and the recess portion from the radiation emitter to the collimator.

公开(公告)号：US10031261B2

公开(公告)日：2018-07-24

申请号：US14975387

申请日：2015-12-18

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Yanli Deng ,  Qitian Miao ,  Junli Li ,  Guoping Zhu ,  Weiqiang Guan ,  Yuxin Hu ,  Shenjin Ming ,  Ming Huang

IPC: G01D18/00 ,  G01V13/00 ,  G01N23/083

Abstract: The disclosure provides a method for measuring X-ray energy of an accelerator in an inspection system. the method comprises: building a database comprising correspondence between half-value layer (HVL) and energy under a predetermined condition; measuring HVL for X-rays of the accelerator in the inspection system on line under the same predetermined condition; and comparing the measured HVL with the HVLs in the database comprising correspondence between HVL and energy to determine the X-ray energy of the accelerator. The method is applicable to a large-scale container/vehicle inspection system for measurement of X-ray energy/HVL of the accelerator so as to acquire source state of the inspection system in real time.