US 11,726,310 B2
Meta optical device and electronic apparatus including the same
Sangeun Mun, Seoul (KR); Hyeonsoo Park, Seoul (KR); Hyunsung Park, Suwon-si (KR); and Seunghoon Han, Seoul (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Feb. 12, 2021, as Appl. No. 17/174,703.
Claims priority of application No. 10-2020-0120029 (KR), filed on Sep. 17, 2020.
Prior Publication US 2022/0082815 A1, Mar. 17, 2022
Int. Cl. G02B 26/06 (2006.01); G02B 1/00 (2006.01)
CPC G02B 26/06 (2013.01) [G02B 1/002 (2013.01); G02B 2207/101 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A meta-optical device comprising:
a plurality of phase modulation areas arranged in a first direction and configured to modulate a phase of an incident light, each of the plurality of phase modulation areas comprising a plurality of nanostructures; and
a compensation area located between a kth phase modulation area and a (k+1)th phase modulation area adjacent to each other, from among the plurality of phase modulation areas, and comprising a compensation structure for buffering an effective refractive index change occurring in a boundary area between the kth phase modulation area and the (k+1)th phase modulation area according to respective rules of the kth phase modulation area and the (k+1)th phase modulation area,
wherein N is a number of the plurality of phase modulation areas, k and N are natural numbers, and k is equal to or greater than 1 and less than N,
wherein the plurality of phase modulation areas have a circular shape or an annular shape surrounding the circular shape, and the first direction is a radial direction that extends from a center of the circular shape toward a boundary of the meta-optical device, and
wherein sizes of the plurality of nanostructures in the kth phase modulation area change according to a first pattern in the radial direction, sizes of the plurality of nanostructures in the (k+1)th phase modulation area change according to a second pattern in the radial direction, and a size of the compensation structure located between the kth phase modulation area and the (k+1)th phase modulation area does not follow the first pattern and the second pattern.