US 12,259,573 B2
Optical device and display panel
Chiara Greganti, Vienna (AT); and Jonas Zeuner, Vienna (AT)
Assigned to VITREALAB GMBH, Wein (AT)
Appl. No. 17/904,659
Filed by VitreaLab GmbH, Vienna (AT)
PCT Filed Mar. 3, 2021, PCT No. PCT/EP2021/055358
§ 371(c)(1), (2) Date Aug. 19, 2022,
PCT Pub. No. WO2021/175932, PCT Pub. Date Sep. 10, 2021.
Claims priority of application No. 20160644 (EP), filed on Mar. 3, 2020.
Prior Publication US 2023/0102740 A1, Mar. 30, 2023
Int. Cl. F21V 8/00 (2006.01)
CPC G02B 6/0076 (2013.01) [G02B 6/0055 (2013.01); G02B 6/0065 (2013.01)] 25 Claims
OG exemplary drawing
 
1. An optical device for controlling light, the optical device comprising:
a first waveguide for receiving a light beam from an external light source,
at least a second waveguide,
an optical coupler for coupling a light beam from the first waveguide to the second waveguide,
a beam shaping structure with a light emitting area for emitting a light beam,
wherein the second waveguide is configured to guide a light beam coupled from the first waveguide to the beam shaping structure,
wherein the beam shaping structure is configured to propagate a light beam received from the second waveguide to the light emitting area such that the beam divergence of a light beam emitted from the light emitting area is lower than the beam divergence of the light beam received from the second waveguide,
wherein the beam shaping structure comprises an optical shaping element, wherein the at least second waveguide directs the light beam coupled from the first waveguide at the optical shaping element, and
wherein the optical shaping element is a concave mirror or a diffractive optical element.