Patent ID: 11885943
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 23:
24. The electronic device of claim 17, wherein the nano structure array comprises a plurality of nano structures,
wherein the plurality of nano structures comprise a first phase shift layer configured to react with incident light passing through the first lens and change a phase of the incident light passing through the first lens, and a second phase shift layer configured to change a phase of incident light passing through the first phase shift layer, and
wherein a first nano structure of the plurality of nano structures and a second nano structure of the plurality of nano structures adjacent to the first nano structure satisfy the following expressions:

N11>N21, and

N12<N22,

where N11 is an effective refractive index of the first phase shift layer of the first nano structure, N12 is an effective refractive index of the second phase shift layer of the first nano structure, N21 is an effective refractive index of the first phase shift layer of the second nano structure, and N22 is an effective refractive index of the second phase shift layer of the second nano structure.