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:
Apr. 21, 2026
Filed:
Aug. 16, 2024
Identification International, Inc., Blacksburg, VA (US);
Richard Karl Fenrich, Blacksburg, VA (US);
Identification International, Inc., Blacksburg, VA (US);
Abstract
In general, one aspect disclosed features a fingerprint scanner, comprising: a platen comprising a light-reflecting surface; a light source configured to emit light rays to illuminate a finger placed in proximity to the light-reflecting surface of the platen; and a sensor configured to capture image data of the finger in proximity to the light-reflecting surface of the platen; wherein the sensor and the platen are positioned relative to one another so that the sensor detects light having an axis of propagation which is at an angle relative to a surface normal of the platen, wherein the angle is greater than the critical angle corresponding to an interface of the platen and water, and less than the critical angle corresponding to an interface of the platen and the finger being imaged.