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

Claim 30:
31. A meta-lens comprising:
nano structures comprising:
a first phase shift layer configured to react with incident light to change a phase of the incident light; and
a second phase shift layer configured to change the phase of the incident light passing through the first phase shift layer,

wherein the nano structures are configured to form an identical phase delay profile for at least two different wavelengths of the incident light, and
wherein a first nano structure of one of the nano structures and a second nano structure 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, N22 is an effective refractive index of the second phase shift layer of the second nano structure.