Patent ID: 11899354
Assignee: EAST CHINA NORMAL UNIVERSITY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An ultrafast photographing apparatus based on polarization-time mapping, comprising:
an active illumination system (100), consisting of a femtosecond laser system (101), a pulse stretcher (102), a first mirror (103), a second mirror (104) and a scattering medium (105) which are optically connected in sequence;
a data acquisition system (200), consisting of a dynamic scene (201), a microscope objective (202), a linear polarizer (203), a first lens (204), an optical rotational dispersion crystal (205), a second lens (206), a micro-lens array (207), a third lens (208), a shutter (209), a linear polarizer array (210), and a high-sensitivity CMOS camera (211) which are optically connected in sequence, wherein the dynamic scene (201) is optically connected to the scattering medium (105) in the active illumination system (100);
a synchronous control system (300), consisting of a digital delay generator, which is connected to the femtosecond laser system (101) in the active illumination system (100), as well as the shutter (209) and the high-sensitivity CMOS camera (211) in the data acquisition system (200); and
a data reconstruction system (400), consisting of a computer, which is connected to the high-sensitivity CMOS camera (211) in the data acquisition system (200).