公开(公告)号：US20250110263A1

公开(公告)日：2025-04-03

申请号：US18894603

申请日：2024-09-24

Applicant: STMicroelectronics International N.V.

Inventor： Simon GUILLAUMET ,  Stephanie AUDRAN ,  Benjamin VIANNE ,  James Peter Drummond DOWNING

IPC: G02B1/116 ,  B82Y20/00 ,  B82Y40/00 ,  G02B1/00

Abstract: An optical device includes a metasurface formed by a metasurface substrate having at least a first metasurface layer made of a first material and an array of pillars extending through the first metasurface layer. The pillars are made of a second material different from the first material. The metasurface has a first face and a second face opposite the first face. A first anti-reflection stack is positioned over the first face of the metasurface. The first anti-reflection stack has a third face and a fourth face opposite the third face and positioned over the first face of the metasurface. A metal trace has a portion which is exposed at the third face of the first anti-reflection stack.

公开(公告)号：US20240393500A1

公开(公告)日：2024-11-28

申请号：US18202418

申请日：2023-05-26

Applicant: STMicroelectronics International N.V.

Inventor： Enrico Giuseppe CARNEMOLLA ,  James Peter Drummond DOWNING ,  Matteo FISSORE

IPC: G02B1/00 ,  G02B27/00 ,  G06F30/12

Abstract: A metasurface optic, designed for short-wave infrared (SWIR) range devices, is formed of one or more unit cells with a specific arrangement of truncated cone-shaped subwavelength nanostructures, tailored to achieve various optical functionalities. The one or more unit cells are formed from a design set selected from among multiple different design sets, each of the multiple different design sets featuring truncated cones having a unique combination of height (800 nm to 1100 nm), sidewall angle (91° to) 93°, and pitch (550 nm to 750 nm), with base radius values of the truncated cones within a given design set varying from 75 nm to 250 nm in 1 nm increments.