CPC G06V 40/1318 (2022.01) [B29D 11/0073 (2013.01); G02B 5/1809 (2013.01); G02B 19/0076 (2013.01); H01L 27/14643 (2013.01)] | 16 Claims |
1. An optical structure, comprising:
an optical element having a planarized top surface; and
a plurality of protrusions disposed on the planarized top surface, wherein each of the plurality of protrusions independently has a size in subwavelength dimensions,
wherein the plurality of protrusions comprise V-antennas having a V-shape from a top view, and
wherein each of the plurality of protrusions has a first side length, a second side length and a third side length from a top view, the second side length connects the first side length and the third side length, the first side length is parallel to the third side length, the second side length is the shortest distance between the first side length and the third side length, the first side length is from 40 nm to 500 nm, the second side length is from 40 nm to 500 nm, and the third side length is from 40 nm to 500 nm.
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