Inventor
LEVOLA TAPANI
FI44 patents
⚠️ This page may combine multiple inventors who share the name “LEVOLA TAPANI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NOKIA CORP
15 patentsUS7764413B2Jul 27, 2010
General diffractive optics method for expanding an exit pupil
NOKIA CORP187 citations99
US7206107B2Apr 17, 2007
Method and system for beam expansion in a display device
NOKIA CORP324 citations99
US7184615B2Feb 27, 2007
Electrically tunable diffractive grating element
NOKIA CORP183 citations99
US7181108B2Feb 20, 2007
Method and optical system for coupling light into a waveguide
NOKIA CORP153 citations99
US6805490B2Oct 19, 2004
Method and system for beam expansion in a display device
NOKIA CORP206 citations99
US7483604B2Jan 27, 2009
Diffractive grating element for balancing diffraction efficiency
NOKIA CORP122 citations98
US6758563B2Jul 6, 2004
Eye-gaze tracking
NOKIA CORP50 citations93
US6445433B1Sep 3, 2002
Pixel structure having deformable material and method for forming a light valve
NOKIA CORP23 citations93
US7997723B2Aug 16, 2011
Display apparatus and device
NOKIA CORP42 citations92
US6773114B2Aug 10, 2004
Portable multimode display device
NOKIA CORP13 citations83
US6381061B2Apr 30, 2002
Pixel structure having deformable material and method for forming a light valve
NOKIA CORP12 citations74
US7885506B2Feb 8, 2011
Device and a method for polarized illumination of a micro-display
NOKIA CORP2 citations63
US7410309B2Aug 12, 2008
Optical shutter
NOKIA CORP5 citations62
US7050126B2May 23, 2006
Direct view display based on light diffraction from a deformable layer
NOKIA CORP6 citations62
US7542214B2Jun 2, 2009
Imaging system with a prism having adjustable number of reflections
NOKIA CORP0 citations52
LEVOLA TAPANI
11 patentsUS8547638B2Oct 1, 2013
Color distribution in exit pupil expanders
LEVOLA TAPANI198 citations99
US8320032B2Nov 27, 2012
Diffractive beam expander and a virtual display based on a diffractive beam expander
LEVOLA TAPANI185 citations99
US8160411B2Apr 17, 2012
Device for expanding an exit pupil in two dimensions
LEVOLA TAPANI333 citations99
US9372347B1Jun 21, 2016
Display system
LEVOLA TAPANI127 citations98
US8466953B2Jun 18, 2013
Stereoscopic exit pupil expander display
LEVOLA TAPANI120 citations98
US8314993B2Nov 20, 2012
Split exit pupil expander
LEVOLA TAPANI115 citations98
US8254031B2Aug 28, 2012
Color distribution in exit pupil expanders
LEVOLA TAPANI123 citations98
US8194325B2Jun 5, 2012
Optical apparatus and method
LEVOLA TAPANI90 citations98
US8717392B2May 6, 2014
Apparatus for enabling users to view images, methods and computer readable storage mediums
LEVOLA TAPANI14 citations84
US8331006B2Dec 11, 2012
Display device and a method for illuminating a light modulator array of a display device
LEVOLA TAPANI10 citations84
US8120762B2Feb 21, 2012
Light guide and optical sensing module input device and method for making same
LEVOLA TAPANI2 citations62
MICROSOFT TECHNOLOGY LICENSING LLC
10 patentsUS9535253B2Jan 3, 2017
Display system
MICROSOFT TECHNOLOGY LICENSING LLC102 citations98
US9459451B2Oct 4, 2016
Eye tracking apparatus, method and system
MICROSOFT TECHNOLOGY LICENSING LLC115 citations98
US9791696B2Oct 17, 2017
Waveguide gratings to improve intensity distributions
MICROSOFT TECHNOLOGY LICENSING LLC70 citations97
US10018844B2Jul 10, 2018
Wearable image display system
MICROSOFT TECHNOLOGY LICENSING LLC68 citations96
US10317677B2Jun 11, 2019
Display system
MICROSOFT TECHNOLOGY LICENSING LLC21 citations94
US10359627B2Jul 23, 2019
Waveguide coatings or substrates to improve intensity distributions having adjacent planar optical component separate from an input, output, or intermediate coupler
MICROSOFT TECHNOLOGY LICENSING LLC24 citations93
US9304235B2Apr 5, 2016
Microfabrication
MICROSOFT TECHNOLOGY LICENSING LLC23 citations92
US10345601B2Jul 9, 2019
Wearable image display system
MICROSOFT TECHNOLOGY LICENSING LLC6 citations82
US9910276B2Mar 6, 2018
Diffractive optical elements with graded edges
MICROSOFT TECHNOLOGY LICENSING LLC11 citations82
US10663734B2May 26, 2020
Image display system
MICROSOFT TECHNOLOGY LICENSING LLC0 citations50