Inventor
Tapani Levola
Inventor
Tampere, FI
Overview
Patents· 48 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus52%
G06FElectric digital data processing8%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein6%
H04NPictorial communication, e.g. television5%
A61BDiagnosis4%
G06TImage data processing or generation, in general4%
F21VFunctional features or details of lighting devices or systems thereof2%
B05CApparatus for applying fluent materials to surfaces, in general1%
B05DProcesses for applying fluent materials to surfaces, in general1%
B29DProducing particular articles from plastics or from substances in a plastic state1%
PatentTitleYear
11,119,262Optical device, display device, and method for outputting light and displaying image thereof202110,663,734Image display system202010,359,627Waveguide coatings or substrates to improve intensity distributions having adjacent planar optical component separate from an input, output, or intermediate coupler201910,345,601Wearable image display system201910,317,677Display system201910,018,844Wearable image display system20189,910,276'Diffractive optical elements with graded edges'20189,791,696'Waveguide gratings to improve intensity distributions'20179,766,464'Reducing ghost images'20179,753,297'Optical apparatus and method for expanding an exit pupil'20179,632,316'Display system'20179,535,253'Display system'20179,459,451'Eye tracking apparatus, method and system'20169,372,347'Display system'20169,304,235'Microfabrication'20169,200,779'Three-dimensional display for displaying volumetric images'20158,885,997'NED polarization system for wavelength pass-through'20148,830,584'Exit pupil expanders with spherical and aspheric substrates'20148,717,392'Apparatus for enabling users to view images, methods and computer readable storage mediums'20148,547,638'Color distribution in exit pupil expanders'20138,494,229'Device and method for determining gaze direction'20138,466,953'Stereoscopic exit pupil expander display'20138,331,006'Display device and a method for illuminating a light modulator array of a display device'20128,320,032'Diffractive beam expander and a virtual display based on a diffractive beam expander'20128,314,993'Split exit pupil expander'20128,314,819'Displays with integrated backlighting'20128,254,031'Color distribution in exit pupil expanders'20128,194,325'Optical apparatus and method'20128,160,411'Device for expanding an exit pupil in two dimensions'20128,155,489'Method for coupling light into a thin planar waveguide'20128,120,762'Light guide and optical sensing module input device and method for making same'20128,092,723'Method of producing a diffraction grating element'20127,997,723'Display apparatus and device'20117,885,506'Device and a method for polarized illumination of a micro-display'20117,764,413'General diffractive optics method for expanding an exit pupil'20107,542,214'Imaging system with a prism having adjustable number of reflections'20097,483,604'Diffractive grating element for balancing diffraction efficiency'20097,410,309'Optical shutter'20087,206,107'Method and system for beam expansion in a display device'20077,184,615'Electrically tunable diffractive grating element'20077,181,108'Method and optical system for coupling light into a waveguide'20077,050,126'Direct view display based on light diffraction from a deformable layer'20066,805,490'Method and system for beam expansion in a display device'20046,773,114'Portable multimode display device'20046,758,563'Eye-gaze tracking'20046,445,433'Pixel structure having deformable material and method for forming a light valve'20026,381,061'Pixel structure having deformable material and method for forming a light valve'20025,556,465'Sample treatment apparatus for use in molecular beam epitaxy'1996Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1996Based in Turku, FI· patent location history
2002–2017Patents assigned to NOKIA CORP (30)· patent assignee history
2002–2019Based in Tampere, FI· patent location history
2012–2017Patents assigned to LEVOLA TAPANI (17)· patent assignee history
2012–2017Patents assigned to SAARIKKO PASI (5)· patent assignee history
2012–2015Patents assigned to LEVOLA TAPANI KALERVO (2)· patent assignee history
2016–2020Patents assigned to MICROSOFT TECHNOLOGY LICENSING LLC (12)· patent assignee history
2016–2020Based in Espoo, FI· patent location history
2021Based in Shenzhen, CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NOKIA CORP | 30 | 2002–2017 |
| LEVOLA TAPANIself | 17 | 2012–2017 |
| MICROSOFT TECHNOLOGY LICENSING LLC | 12 | 2016–2020 |
| SAARIKKO PASI | 5 | 2012–2017 |
| LEVOLA TAPANI KALERVOself | 2 | 2012–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tampere, FI | 38 | 2002–2019 |
| Espoo, FI | 8 | 2016–2020 |
| Shenzhen, CN | 1 | 2021 |
| Turku, FI | 1 | 1996 |