Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
SINGLE-SHOT FRESNEL NON-COHERENT CORRELATION DIGITAL HOLOGRAPHIC DEVICE BASED ON POLARIZATION-ORIENTED PLANAR LENS
Document Type and Number:
WIPO Patent Application WO/2020/034662
Kind Code:
A1
Abstract:
A single-shot Fresnel non-coherent correlation digital holographic device based on a polarization-oriented planar lens, comprising: A polarization-oriented planar lens (1) for wavefront modulation and beam splitting, a focusing element (2), a half-wave plate (3) with a small hole and a polarization imaging camera (4). Incident light passes through the polarization-oriented planar lens (1) and the focusing element (2) and is divided into two beams with different polarizations, that is, focused and parallel or focused and divergent beams, wherein the focused beam passes through the small hole of the half-wave plate (3), the parallel or divergent beam passes through the half-wave plate (3), so as to make the polarization of the two beams consistent behind pass through the half-wave plate (3). The holographic device performs wavefront modulation and beam splitting by using the characteristics of the polarization-oriented planar lens (1) sensitive to circularly polarized light, implements single-shot measurement of an imaging object by using a micro-polarization array in the polarization imaging camera (4), and has the advantages of being compact in structure, economical and practical, convenient to construct and easy to modulate.

Inventors:
LIU JUN (CN)
LIANG DONG (CN)
ZHANG QIU (CN)
Application Number:
PCT/CN2019/084899
Publication Date:
February 20, 2020
Filing Date:
April 29, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SHANGHAI INST OPTICS & FINE MECH CAS (CN)
International Classes:
G03H1/06
Foreign References:
CN109085745A2018-12-25
CN108459485A2018-08-28
CN104793475A2015-07-22
CN103257441A2013-08-21
US20170052508A12017-02-23
Attorney, Agent or Firm:
SHANGHAI HENGHUI INTELLECTUAL PROPERTY AGENCY (CN)
Download PDF: