Optical device capable of providing at least two different optical functions
AssigneeInterDigital CE Patent Holdings, SAS
InventorsArtem Boriskin, Oksana Shramkova
Life of this patent
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Abstract
An optical device forming an outgoing electromagnetic wave from an incident electromagnetic wave comprises at least one unit cell (UC), comprising: at least two subwavelength optical elements (1, 2), each of them belonging to a different set (MSI, MS2) of subwavelength optical elements, a set of subwavelength optical elements being characterized by a type of optical response to an incident electromagnetic wave; means (21) enabling selective excitation of all subwavelength optical elements belonging to a given set, in response to an electromagnetic wave (20) incident on said unit cell.
Claims20
An optical device forming an outgoing electromagnetic wave from an incident electromagnetic wave, wherein the optical device comprises at least one unit cell (UC;
- UC1, UC2),
- said unit cell comprising:
- at least two subwavelength optical elements (1, 2, . . . , N), each of them belonging to a different set (MS1, MS2, . . . , MSn) of subwavelength optical elements, a set of subwavelength optical elements being characterized by a type of optical response to an incident electromagnetic wave;
- and
- a nanojet microlens (21) enabling selective excitation of the subwavelength optical elements belonging to a given set, in response to said electromagnetic wave (20) incident on said unit cell.
An apparatus comprising:
- a plurality of nanojet microlenses;
- and
- for each of the nanojet microlenses, at least a first subwavelength optical element and a second subwavelength optical element, the second subwavelength optical element being different from the first subwavelength optical element;
- wherein the first and second subwavelength optical elements are arranged such that the first subwavelength optical elements are selectively illuminated for a first incident angle of an incident electromagnetic wave and the second subwavelength optical elements are selectively illuminated for a second incident angle of the incident electromagnetic wave.
Dependencies are inferred from the claim text.