公开(公告)号：US20180166253A1

公开(公告)日：2018-06-14

申请号：US15837587

申请日：2017-12-11

Applicant: VG Systems Limited

Inventor： Zoran PESIC ,  Chris STEPHENS ,  Austin DAY ,  Bryan BARNARD

IPC: H01J37/22 ,  H01J37/28

CPC classification number: H01J37/224 ,  H01J37/222 ,  H01J37/244 ,  H01J37/28 ,  H01J37/295 ,  H01J2237/024 ,  H01J2237/10 ,  H01J2237/2443 ,  H01J2237/24475 ,  H01J2237/2804 ,  H01J2237/2805

Abstract: The invention relates to an image capture assembly and method for use in an electron backscatter diffraction (EBSD) system. An image capture assembly comprises a scintillation screen (10) including a predefined screen region (11), an image sensor (20) comprising an array of photo sensors and a lens assembly (30). The image capture assembly is configured to operate in at least a first configuration or a second configuration. In the first configuration the lens assembly (30) projects the predefined region (11) of the scintillation screen (10) onto the array and in the second configuration the lens assembly (30) projects the predefined region (11) of the scintillation screen (10) onto a sub-region (21) of the array. In each of the first and second configurations the field of view of the lens assembly (30) is the same.