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:
Aug. 11, 2015
Filed:
Jan. 04, 2011
Henrik Chresten Pedersen, Jyllinge, DK;
Michael Linde Jakobsen, Roskilde, DK;
Vagn Steen Gruner Hanson, Fakse, DK;
Henrik Chresten Pedersen, Jyllinge, DK;
Michael Linde Jakobsen, Roskilde, DK;
Vagn Steen Gruner Hanson, Fakse, DK;
O-Net Wavetouch Limited, Hong Kong, CN;
Abstract
The present invention relates to a method () and device () for detecting presence of an object () by means of influencing propagation of light () arriving to a detector (). The device () for detecting presence of the object () at the device () comprises a light source (), a first redirecting structure (), a second redirecting structure (), and a light detector device (). The light source () is adapted to emit light () towards the first redirecting structure (), which is adapted to redirect light () from the light source () towards the second redirecting structure (), which is adapted to return light () from the first redirecting structure () back towards the first redirecting structure (), which is adapted to redirect light () from the second redirecting structure () towards the light detector device (). The device () has a sensing zone () formed by light () propagating between the first redirecting structure () and the second redirecting structure ().