公开(公告)号：US11156821B2

公开(公告)日：2021-10-26

申请号：US16496676

申请日：2018-02-26

Applicant: NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Qian Chen ,  Chao Zuo ,  Jiasong Sun ,  Shijie Feng ,  Yuzhen Zhang ,  Guohua Gu

IPC: G02B21/06 ,  G02B21/02 ,  G02B21/08 ,  G02B21/33 ,  G02B21/36 ,  H04N5/235 ,  H04N5/361 ,  H04N9/47

Abstract: A high-illumination numerical aperture-based large field-of-view high-resolution microimaging device, and a method for iterative reconstruction, the device comprising an LED array (1), a stage (2), a condenser (3), a microscopic objective (5), a tube lens (6), and a camera (7), the LED array (1) being arranged on the forward focal plane of the condenser (3). Light emitted by the i-th lit LED unit (8) of the LED array (1) passes through the condenser (3) and converges to become parallel light illuminating a specimen (4) to be examined, which is placed on the stage (2); part of the diffracted light passing through the specimen (4) is collected by the microscopic objective (5), converged by the tube lens (6), and reaches the imaging plane of the camera (7), forming an intensity image recorded by the camera (1). The present device and method ensure controllable programming of the illumination direction, while also ensuring an illumination-numerical-aperture up to 1.20 and thus achieving a reconstruction resolution up to 0.15 μm.