US 11,656,494 B2
Device for combining light beams which interact with adjacently arranged pixels of a light modulator
Norbert Leister, Dresden (DE); and Stephan Reichelt, Wanger i.A. (DE)
Assigned to SEEREAL TECHNOLOGIES S.A., Munsbach (LU)
Filed by SEEREAL TECHNOLOGIES S.A., Munsbach (LU)
Filed on Dec. 21, 2020, as Appl. No. 17/129,059.
Application 17/129,059 is a continuation of application No. 16/337,585, granted, now 10,871,674, previously published as PCT/EP2017/074903, filed on Sep. 29, 2017.
Claims priority of application No. 16191282 (EP), filed on Sep. 29, 2016.
Prior Publication US 2021/0109404 A1, Apr. 15, 2021
Int. Cl. G02F 1/1335 (2006.01); G02F 1/13363 (2006.01); G03H 1/22 (2006.01); G03H 1/02 (2006.01)
CPC G02F 1/133528 (2013.01) [G02F 1/13363 (2013.01); G03H 1/2294 (2013.01); G02F 1/13355 (2021.01); G02F 1/133541 (2021.01); G02F 1/133638 (2021.01); G03H 2001/0224 (2013.01); G03H 2222/31 (2013.01); G03H 2225/55 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device for combining light beams which interact with adjacently arranged pixels of a light modulator, the device comprising:
a beam splitting component,
the light modulator having a multiplicity of pixels,
a beam combining component, and
a beam superposition component,
wherein the beam splitting component is configured and arranged in such a way that incident light beams are thereby split into a first subbeam and a second subbeam by the beam splitting component, in such a way that the first subbeam propagates toward a first pixel of the light modulator and the second subbeam propagates toward a second pixel of the light modulator, the beam combining component is configured and arranged in such a way that the first subbeam and the second subbeam is thereby combined after interaction with the respective pixels of the light modulator, the beam splitting component and the beam combining component are configured and arranged in such a way that a sum of optical path lengths of the first subbeam and the second subbeam is respectively constant for different angles of incidence, and
wherein an optical beam path of the first subbeam in relation to a polarization property and an optical beam path of the second subbeam in relation to a polarization property are essentially configured point-symmetrically with respect to a midpoint between the first pixel and the second pixel.