The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 2020
Filed:
Apr. 10, 2018
Idemia Identity & Security France, Issy les Moulineaux, FR;
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Joël-Yann Fourre, Issy les Moulineaux, FR;
Jean-François Mainguet, Grenoble, FR;
IDEMIA IDENTITY & SECURITY FRANCE, Issy les Moulineaux, FR;
COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris, FR;
Abstract
A compact device for capturing an imprint of a body part working by total reflection with dark background. The device includes a plurality of optically coupled elements including: a first transparent plate including a top face on which the body part bearing the imprint to be imaged can rest; a light source; a screen opaque to light situated below the first transparent plate including a network of holes; a second transparent plate situated below the opaque screen; and a sensor capable of generating an imprint image situated below the second transparent plate; each transparent plate having a refractive index greater than a refractive index of air, and the light source being able to be positioned at the level of the screen to directly illuminate the top face or below the screen to illuminate the top face through the holes.