公开(公告)号：US10690809B2

公开(公告)日：2020-06-23

申请号：US16125546

申请日：2018-09-07

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： Seyedeh Mahsa Kamali ,  Ehsan Arbabi ,  Amir Arbabi ,  Yu Horie ,  MohammadSadegh Faraji-Dana ,  Andrei Faraon

IPC: G02B1/00 ,  G02B1/02 ,  G02B5/02 ,  G02B5/08

Abstract: A metasurface is defined by an array of scattering elements having a U shape, where the geometrical dimensions determining the U shape are determined according to the different phase profiles that the metasurface is meant to generate in response to an incident electromagnetic wave. The metasurface, therefore, generates different phase shifts as a function of the incident electromagnetic wave.

公开(公告)号：US11187582B2

公开(公告)日：2021-11-30

申请号：US16831448

申请日：2020-03-26

Applicant: California Institute of Technology

Inventor： MohammadSadegh Faraji-Dana ,  Ehsan Arbabi ,  Andrei Faraon

IPC: G01J3/28 ,  G01J3/18 ,  G01J3/02 ,  G02B1/00 ,  G02B27/10

Abstract: Hyperspectal imagers including reflective and transmissive metasurfaces are disclosed. The described metasurfaces are used collectively to disperse and focus light of different wavelengths and incident angles on a focal plane. The disclosed devices are compact and light, and can be used in systems and applications requiring stringent form factors.

公开(公告)号：US11092486B2

公开(公告)日：2021-08-17

申请号：US16213810

申请日：2018-12-07

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： MohammadSadegh Faraji-Dana ,  Ehsan Arbabi ,  Amir Arbabi ,  Andrei Faraon

IPC: G01J3/02 ,  G02B5/18

Abstract: Compact optical devices such as spectrometers are realized with metasurfaces within a dielectric medium confined by reflective surfaces. The metasurfaces control the phase profiles of the reflected electromagnetic waves within the device. In a compact spectrometer, the metasurfaces within the device separate the electromagnetic waves in different wavelengths. The metasurfaces are designed according to their phase profile by varying the size of the array of scatterers.