US 9,310,767 B2 · Reconstruction of an image of an object at least partially hidden by a flame

Abstract

Disclosed a system for reconstructing an image of an object hidden by a flame. The system comprises a laser source emitting an infrared radiation and a lensless, off-axis interferometric arrangement that divides the infrared radiation into an object beam and a reference beam. The object beam is enlarged and then irradiates the object, that scatters it. The reference beam is enlarged and then interferes with the scattered object beam, so as to create a hologram. The system comprises an infrared detector which detects the hologram and a processor that reconstructs the image of the object by numerically processing the hologram.

Claims20

Dependent claims

A system comprising:

a laser source configured to emit infrared radiation having a wavelength between 3 μm and 1 mm;
an interferometric arrangement configured to divide said infrared radiation into an object beam to irradiate at least a portion of an object at least partially hidden by a flame and to be scattered by said object and a reference beam that interferes with said scattered object beam to create a hologram of said object;
an infrared detector configured to detect said hologram;
and
a processor configured to reconstruct an image of said object at least partially hidden by the flame by numerically processing said hologram.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/100,775Filed 9 Dec 2013

Published

US 2015/0160613 A111 Jun 2015

Granted

12 Apr 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

G03H 1/0443
Processes or apparatus for producing holograms: digital holography, i.e. recording holograms with digital recording means
G03H 2001/0083
Adaptation of holography to specific applications: for restoring distorted objects, e.g. restoring objects through scattering media
G03H 2001/0445
Digital holography, i.e. recording holograms with digital recording means: off-axis recording arrangement
G03H 2001/2655
Multiplexing processes, e.g. aperture, shift, or wavefront multiplexing: time multiplexing, i.e. consecutive records wherein the period between…

Reconstruction of an image of an object at least partially hidden by a flame

Life of this patent

Reconstruction of an image of an object at least partially hidden by a flame

Life of this patent

Abstract

Claims20