公开(公告)号：US11740129B2

公开(公告)日：2023-08-29

申请号：US17298615

申请日：2020-03-30

Applicant: SOUTH CHINA NORMAL UNIVERSITY

Inventor： Xiaoxu Lv ,  Chengxin Zhou ,  Liyun Zhong ,  Qinwen Ning ,  Shengde Liu

IPC: G01J3/45 ,  G02F1/13363 ,  G01J3/02 ,  G01J3/12

CPC classification number: G01J3/45 ,  G01J3/0224 ,  G01J3/0229 ,  G01J3/0237 ,  G01J3/12 ,  G02F1/133638 ,  G01J2003/1291

Abstract: A differential interference imaging system capable of rapidly changing shear direction and amount includes: a light source (101), a filter (102), a polarizer (103), a sample stage (104), an infinite imaging microobjective (105), a tube lens (106), a shear component, an analyzer (113), and an image sensor (114). After the light intensity and a polarization direction is adjusted, the linearly polarized light passes through a transparent sample, to be collected by the infinite imaging microobjective (105) and to implement imaging through the tube lens (106). An imaging beam is divided into two linearly polarized light fields which are perpendicular to each other in the polarization directions and have tiny shear amount, then they are further combined into an interference light filed by the analyzer (103) to form a differential interference image in the image sensor (114). The system may be flexibly assembled, is simple in structure and easy to implement.

公开(公告)号：US20220003607A1

公开(公告)日：2022-01-06

申请号：US17298615

申请日：2020-03-30

Applicant: SOUTH CHINA NORMAL UNIVERSITY

Inventor： Xiaoxu Lv ,  Chengxin Zhou ,  Liyun Zhong ,  Qinwen Ning ,  Shengde Liu

IPC: G01J3/45 ,  G01J3/02 ,  G01J3/12 ,  G02F1/13363

Abstract: A differential interference imaging system capable of rapidly changing shear direction and amount includes: a light source (101), a filter (102), a polarizer (103), a sample stage (104), an infinite imaging microobjective (105), a tube lens (106), a shear component, an analyzer (113), and an image sensor (114). After the light intensity and a polarization direction is adjusted, the linearly polarized light passes through a transparent sample, to be collected by the infinite imaging microobjective (105) and to implement imaging through the tube lens (106). An imaging beam is divided into two linearly polarized light fields which are perpendicular to each other in the polarization directions and have tiny shear amount, then they are further combined into an interference light filed by the analyzer (103) to form a differential interference image in the image sensor (114). The system may be flexibly assembled, is simple in structure and easy to implement.