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:
Sep. 28, 2021
Filed:
Aug. 03, 2018
Université DE Rennes 1, Rennes, FR;
Albert Le Floch, Rennes, FR;
Albert Le Floch, Rennes, FR;
Guy Ropars, Rennes, FR;
Université de Rennes 1, Rennes, FR;
Other;
Abstract
The invention relates to a device (LIGHT) for lighting a graphic and/or textual content present on any medium and in particular on a paper medium. The lighting device (LIGHT) is configured to periodically activate and deactivate said lighting beam in successive cycles carried out at a preset frequency Fd. Each cycle has a duration T and comprises a period of activation of the light beam of duration Tfollowed by a period of deactivation of the light beam of duration Tor vice versa. The frequency Fd is comprised in an interval of values ranging from 60 to 90 Hz and the duration Tof the periods of activation of the light beam is comprised in an interval of values ranging from 15 to 30% of the duration T of the cycles.