Patent ID: 11886022
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A beam expander comprising:
a first optical element;
a second optical element;
a composite waveguide including a plurality of waveguide elements each having a form of a substrate; and
a dichroic coating provided between the plurality of waveguide elements,
wherein the first optical element is configured to input a collimated incident beam from outside the beam expander into the composite waveguide, and the second optical element is configured to output, from the composite waveguide, the collimated incident beam, input to the composite waveguide,
wherein the collimated incident beam input into the composite waveguide is divided into a plurality of wavefronts by the dichroic coating, and the plurality of wavefronts are mixed by total internal reflection in the composite waveguide.