Patent ID: 11914163
Assignee: INTERDIGITAL MADISON PATENT HOLDINGS, SAS
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A device for generating and guiding nanojet beams from an incident electromagnetic wave that is incident on the device, the device comprising:
a host medium having a first refractive index value;
a first layer comprising a first dielectric material having a second refractive index value, wherein the second refractive index value is greater than the first refractive index value, and wherein the first layer comprises a first step structure and a third step structure at a boundary between the first layer and the host medium, wherein the first step structure and the third step structure face each other and are separated from each other by a first distance; and
a second layer comprising a second dielectric material and comprising a second step structure and a fourth step structure at a boundary between the second layer and the host medium, the second layer having a third refractive index value higher than the first refractive index value of the host medium, wherein the second step structure and the fourth step structure face each other and are separated from each other by a second distance that is smaller than the first distance, wherein the second step structure is stacked on the first step structure and wherein the fourth step structure is stacked on the third step structure, wherein each of the first step structure, the second step structure, the third step structure, and the fourth step structure is configured such that, in response to the incident electromagnetic wave reaching the device in a direction from the first layer toward the second layer, nanojet beams originating from edges of the first step structure, the second step structure, the third step structure, and the fourth step structure are combined at a focal spot to form a single high-intensity nanojet beam.