US 2026/0259137 A1 · DEVICE FOR AMPLIFYING A SIGNAL IN SELF-REFERENCE QUANTITATIVE PHASE IMAGING

Abstract

Quantitative phase imaging device having an imaging optical system for imaging an object in an image plane, a light source for emitting light radiation over the Fourier plane of the imaging optical system, an optical spatial filter in the Fourier plane, having an area of least attenuation and an area of greatest attenuation, a wavefront sensor for measuring, in the image plane, the intensity and the phase of the light radiation which has passed through the imaging optical system and of which at least part has interacted with the object, in order to quantify the phase induced by the object, the light source, the imaging optical system and the optical spatial filter being such that, when the object is absent, the light radiation is focused on the area of greatest attenuation.

Claims17

Dependent claims

1-28. (canceled)

A quantitative phase imaging device comprising:

an imaging optical system for imaging an object in an image plane,
a light source for emitting light radiation (I) over at least part of the Fourier plane of the imaging optical system,
an optical spatial filter extending in the Fourier plane of the imaging optical system and comprising an area in which the light radiation is attenuated to the least extent and an area in which the light radiation is attenuated to the greatest extent,
a wavefront sensor for measuring, in the image plane, the intensity and the phase of the electromagnetic field associated with the light radiation that was emitted by the light source, has passed through the imaging optical system and the optical spatial filter and of which at least part has interacted with the object, in order to quantify the phase induced by the object,
the light source, the imaging optical system and the optical spatial filter being arranged so that, when the object to be imaged is absent, the light radiation is focused on the area of greatest attenuation.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/879,528Filed 30 Jun 2022

Published

3 Sep 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

G01N 21/45
Refractivity; Phase-affecting properties, e.g. optical path length: using interferometric methods; using Schlieren methods
G02B 21/14
Condensers: affording illumination for phase-contrast observation
G01N 2021/458
Using interferometric methods; using Schlieren methods: using interferential sensor, e.g. sensor fibre, possibly on optical waveguide
G01N
Investigating or analysing materials by determining their chemical or physical properties

Device for amplifying a signal in self-reference quantitative phase imaging

Life of this patent

Device for amplifying a signal in self-reference quantitative phase imaging

Life of this patent

Abstract

Claims17