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:
Oct. 30, 1990
Filed:
Aug. 18, 1989
Applicant:
Inventors:
Ariold Ludmirsky, Jerusalem 92509, IL;
Arie Zigler, Rishon Le Zion, IL;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B / ; A61B / ;
U.S. Cl.
CPC ...
340575 ; 351210 ;
Abstract
A method and apparatus is disclosed which is capable of detecting an individual's level of fatigue and generating an alarm signal in accordance therewith. The level of fatigue is determined based on changes in the reflectivity of a projected IR beam which is reflected off an eyelid. At initial stages of drowsiness the eyelid is relatively rough and the reflectivity is lower than when the eyelid fully closes as when a person is heavily fatigued.