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:
Feb. 05, 2019
Filed:
Feb. 26, 2015
Pgs Geophysical As, Oslo, NO;
Ib-Rune Johansen, Oslo, NO;
Matthieu Lacolle, Nesøya, NO;
Thor Bakke, Lysaker, NO;
Andreas Vogl, Oslo, NO;
Dag Thorstein Wang, Oslo, NO;
Sverre Knudsen, Trondheim, NO;
Odd Løvhaugen, Oslo, NO;
Hallvard Angelskår, Olso, NO;
Zeljko Skokic, Oslo, NO;
PGS Geophysical AS, Oslo, NO;
Abstract
The present invention relates to a displacement sensor device and the system including the device, wherein the device comprises a first at least partially transparent plane surface with a first diffraction pattern and a second plane surface comprising a second reflecting diffraction pattern. The diffractive patterns being adapted to diffract light within a chosen range of wavelengths, the second surface being positioned below and parallel to the first surface constituting a pair wherein said first and second diffractive patterns being essentially equal, the device also comprising displacement means for allowing a movement in a direction parallel to said surfaces, the device thus providing a movement sensitive diffraction pattern.