US 12,438,341 B2
Illumination device
Jean-Francois Seurin, Princeton Junction, NJ (US); Baiming Guo, Old Bridge, NJ (US); Markus Rossi, Jona (CH); and Anderson Singulani, Graz (AT)
Assigned to AMS SENSORS ASIA PTE. LTD., Singapore (SG)
Appl. No. 17/278,127
Filed by ams Sensors Asia Pte. Ltd., Singapore (SG)
PCT Filed Sep. 23, 2019, PCT No. PCT/IB2019/001014
§ 371(c)(1), (2) Date Mar. 19, 2021,
PCT Pub. No. WO2020/065391, PCT Pub. Date Apr. 2, 2020.
Claims priority of provisional application 62/735,367, filed on Sep. 24, 2018.
Prior Publication US 2022/0131345 A1, Apr. 28, 2022
Int. Cl. H01S 5/183 (2006.01); G01B 11/24 (2006.01); G01S 7/481 (2006.01); G01S 17/89 (2020.01); G02B 3/00 (2006.01); G02B 19/00 (2006.01); H01S 5/02253 (2021.01); H01S 5/42 (2006.01); H04N 23/56 (2023.01)
CPC H01S 5/18388 (2013.01) [G01B 11/24 (2013.01); G01S 7/4815 (2013.01); G01S 17/89 (2013.01); G02B 3/0006 (2013.01); G02B 19/0057 (2013.01); H01S 5/02253 (2021.01); H01S 5/18305 (2013.01); H01S 5/18386 (2013.01); H01S 5/423 (2013.01); H04N 23/56 (2023.01)] 42 Claims
OG exemplary drawing
 
1. A device comprising:
an illumination device for emitting an illumination beam, the illumination device comprising:
an emitter array comprising multiple light emitters;
and a meta-structure array comprising multiple transmission areas, the meta-structure array being positioned to receive light emitted from the emitter array,
in which light from the meta-structure array forms the illumination beam, in which a first one of said multiple transmission areas is arranged to emit light in a different direction than a second one of said multiple transmission areas,
in which each meta-structure of the meta-structure array at least partially overlaps multiple corresponding light emitters,
in which each transmission area of the meta-structure array is positioned to receive light from a corresponding subset of the light emitters and to output a corresponding sub-beam of the illumination beam, a first sub-beam output from the first transmission area of the meta-structure array having a different angle of deflection than a second sub-beam output from the second transmission area of the meta-structure array,
in which the first and second transmission areas of the meta-structure array are adjacent to each other and are positioned such that the first sub-beam overlaps with the second sub-beam at the full width at half maximum (FWHM) points of the first and second sub-beams.