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:
Jan. 13, 2026
Filed:
Aug. 18, 2023
Robert Bosch Gmbh, Stuttgart, DE;
Johannes Meyer, Haseluenne, DE;
Johannes Fischer, Pliezhausen, DE;
ROBERT BOSCH GMBH, Stuttgart, DE;
Abstract
A method for ascertaining at least one eye state of at least one person situated in a defined spatial region. At least one light beam is directed, in a scanning manner, into the defined spatial region using a light source of a scanning laser feedback interferometry sensor. The defined spatial region has, in the horizontal direction, at least the dimension of a width of a head of the person. A modulation of the power of the light source of the laser feedback interferometry sensor is measured as a function of at least one light beam reflected back by at least one eye of the person situated in the defined spatial region. The at least one eye state of the at least one person situated in the defined spatial region is ascertained as a function of the modulation of the power of the light source, using a processing unit.