US 11,079,582 B2Granted

Broadband hyperspectral spectrophotometer

AssigneesCentre National D'Etudes Spatiales, Centre National De La Recherche Scientifique, Sorbonne University

InventorsFrédéric Bourcier, Philippe Walter

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Abstract

The present disclosure concerns a broadband hyperspectral imaging spectrophotometer configured to analyze an object and includes an illumination assembly having a source for emitting a light beam and configured so that the light beam scans line by line the object to be analyzed, a focusing mirror, a first mirror folding, and a planar scanning mirror movable in rotation. The illumination assembly, the focusing mirror, the first folding mirror and the planar mirror are arranged to bring the light beam to the object along a line which will be displaced on the object via the scanning mirror. The imaging spectrophotometer further includes two measuring sensors by a distance between the object and the scanning mirror. The focusing mirror is movable in translation to adapt the imager to the measured distance by the measuring sensors.

Claims10

Dependent claims

A broadband hyperspectral imaging spectrophotometer configured to analyze an object, said spectrophotometer comprising

an illumination assembly comprising a source for emitting a light beam, said assembly being configured so that the light beam scans line by line the object to be analyzed;
a focusing mirror configured to receive the light beam from the illumination assembly;
a first folding mirror arranged to face the focusing mirror to receive the light beam reflected from the focusing mirror;
a planar scanning mirror movable in rotation and configured to receive the light beam reflected by the first folding mirror and reflect the light beam to the object along a line which is to be displaced;
and
two measuring sensors configured to measure a distance between the object and the planar scanning mirror,
wherein the focusing mirror is movable in translation to adapt the imaging spectrophotometer to the measured distance by said measuring sensors, wherein the focusing mirror is moved along an axis that transverses an axis of light beam reflected by the planar scanning mirror onto the object.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/028,695Filed 6 Jul 2018
Priority: FR 17/563846 Jul 2017
Published: US 2019/0018230 A117 Jan 2019
Granted: 3 Aug 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

G02B 21/0048
Scanning details, e.g. scanning stages: scanning mirrors, e.g. rotating or galvanomirrors, MEMS mirrors
G01J 3/0208
Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows: using focussing or collimating elements, e.g. lenses or…
G01J 3/021
Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows: using plane or convex mirrors, parallel phase plates, or…
G01J 3/0243
Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows: having a through-hole enabling the optical element to fulfil…

Family

US 2019/0018230 A1Pre-grant publication · published 17 Jan 2019
US 11,079,582 B2This patent

From the US filing history. Foreign family members aren’t listed.

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