Patent · US Active

Device for the direct optical recording of skin prints

US10839241B2 · kind B2 · utility

0Cited by

0References

17Claims

0Family size

Assignee

JENETRIC GmbH · DE

Inventors

Philipp Riehl · Jena, DE
Joerg Reinhold · Jena, DE
Juergen Hillmann · Jena, DE
Tom MICHALSKY · Zwenkau, DE
Daniel Krenzer · Ruhla, DE
Holger Femel · Oelknitz, DE
Wolfgang Jaehne · Kahla, DE

Key dates

Filing date	Sep 10, 2019
Grant date	Nov 17, 2020
Priority date	—
Expiry date	Sep 10, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH04N1/02815
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A device for direct optical recording of skin prints offers recording of human skin prints for personal identification permitting a display layer directly below the placement surface. A light guide layer arranged below the sensor layer has at least one LED at a narrow side and light out-coupling structures which, by means of an inclination angle c and differences in the refractive indices relative to neighboring layers, permit a directed coupling out of light at a defined angle which results in total internal reflection at the placement surface at the air interface and with a small divergence angle range of ≤+/−15°. A first adhesion layer between cover layer and sensor layer and a second adhesion layer between sensor layer and light guide layer are provided, the refractive indices of which are 1% to 30% lower than the refractive indices of light guide layer and sensor layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.