US 2026/0172701 A1 · ALL-LIGHT-FIELD IMAGING CAMERA AND IMAGING METHOD THEREOF, AND ALL-LIGHT-FIELD IMAGING DEVICE

Abstract

The present application provides a full-light-field imaging camera, comprising an imaging assembly and a two-dimensional array detector which are sequentially arranged to form an intensity information acquisition system for image plane, the imaging assembly, a Fourier transform lens, and a two-dimensional array detector which are sequentially arranged to form an intensity information acquisition system for spatial Fourier spectrum, and an arithmetic processor in communicational connection with the detectors. The imaging assembly receives scattering light from an object and forms imaging light, the imaging light gives an image on a detection surface of the detector to form a first image plane, the imaging light gives an image in front of the Fourier transform lens to form a second image plane, and a spatial Fourier spectrum intensity information plane is formed on a detection surface of the detector on a focal plane behind the Fourier transform lens. The present application also provides a corresponding imaging method and a full-light field imaging device. The full-light-field imaging camera of the present application overcomes the difficulties that in existing phase imaging technologies, the requirement for the sampling rates is high, redundant information needs to be obtained by overlapping, and algorithm convergence is slow, etc.

Claims11

Dependent claims

A full-light-field imaging camera, comprising an imaging assembly and a first two-dimensional array detector which are sequentially arranged along a direction of a light path to form an intensity information acquisition system for image plane, an imaging assembly, a Fourier transform lens and a second two-dimensional array detector which are sequentially arranged along the direction of another light path to form an intensity information acquisition system for spatial Fourier spectrum, and an arithmetic processor in communicational connection with the first two-dimensional array detector and the second two-dimensional array detector;

wherein the imaging assembly is configured to receive scattering light from an object to form an imaging light, the imaging light gives an image on a detection surface of the first two-dimensional array detector to form a first image plane, and the imaging light gives an image at a position of a known distance in front of the Fourier transform lens to form a second image plane, and then forms a spatial Fourier spectrum plane on a detection surface of the second two-dimensional array detector, where it is on a focal plane behind the Fourier transform lens.

An imaging method of a full-light-field imaging camera, comprising:

Step S1′:
providing an imaging assembly such that illumination light irradiates an object and then passes through the imaging assembly to form an imaging light of the object, placing a detection surface of a first two-dimensional array detector on a first image plane at where the imaging light forms first image, placing a Fourier transform lens at a position at a known distance from a second image plane at where the imaging light forms second image, and placing a second two-dimensional array detector at a rear focal plane of the Fourier transform lens;
obtaining intensity information in image plane and intensity information in spatial Fourier spectrum plane of the object by using the first two-dimensional array detector and the second two-dimensional array detector;
Step S2′:
uploading the intensity information in image plane and the intensity information in spatial Fourier spectrum plane of the object obtained in step S1′ to an arithmetic processor, and utilizing said arithmetic processor to perform step S1 as follows:
using the intensity information in image plane and the intensity information in spatial Fourier spectrum plane as constraints for the Iterative Fourier operation, obtaining spatial distribution information of amplitude and phase of the object by using multiple Iterative Fourier operation, so as to realize full-light-field imaging.

3 more elements

Dependencies are inferred from the claim text.

All-light-field imaging camera and imaging method thereof, and all-light-field imaging device

Life of this patent

All-light-field imaging camera and imaging method thereof, and all-light-field imaging device

Life of this patent

Abstract

Claims11