Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
DIFFRACTION GRATINGS FORMED BY METASURFACES HAVING DIFFERENTLY ORIENTED NANOBEAMS
Document Type and Number:
WIPO Patent Application WO/2018/140651
Kind Code:
A8
Abstract:
Metasurfaces provide compact optical elements in head-mounted display systems to, e.g., incouple light into or outcouple light out of a waveguide. The metasurfaces may be formed by a plurality of repeating unit cells, each unit cell comprising two sets or more of nanobeams elongated in crossing directions: one or more first nanobeams elongated in a first direction and a plurality of second nanobeams elongated in a second direction. As seen in a top-down view, the first direction may be along a y-axis, and the second direction may be along an x-axis. The unit cells may have a periodicity in the range of 10 nm to 1 μm, including 10 nm to 500 nm or 300 nm to 500 nm. Advantageously, the metasurfaces provide diffraction of light with high diffraction angles and high diffraction efficiencies over a broad range of incident angles and for incident light with circular polarization.

Inventors:
LIN, Dianmin (7500 W. Sunrise Blvd, Plantation, FL, 33322, US)
KLUG, Michael, Anthony (7500 W. Sunrise Blvd, Plantation, FL, 33322, US)
ST. HILAIRE, Pierre (7500 W. Sunrise Blvd, Plantation, FL, 33322, US)
MELLI, Mauro (7500 W. Sunrise Blvd, Plantation, FL, 33322, US)
PEROZ, Christophe (7500 W. Sunrise Blvd, Plantation, FL, 33322, US)
POLIAKOV, Evgeni (7500 W. Sunrise Blvd, Plantation, FL, 33322, US)
Application Number:
US2018/015324
Publication Date:
August 08, 2019
Filing Date:
January 25, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MAGIC LEAP, INC. (7500 W. Sunrise Blvd, Plantation, FL, 33322, US)
International Classes:
G02B1/00; G02B5/18; H01Q15/02
Attorney, Agent or Firm:
ALTMAN, Daniel, E. (Knobbe, Martens Olson & Bear LLP,2040 Main Street 14th Floo, Irvine CA, 92614, US)
Download PDF: