公开(公告)号：US10859436B2

公开(公告)日：2020-12-08

申请号：US16279911

申请日：2019-02-19

Applicant: Renesas Electronics America Inc.

Inventor： Dan Gilbert Allen

IPC: G01J3/02 ,  G01J3/51 ,  G01J3/28 ,  G01J3/18

Abstract: A spectrometer having a plasmonic filter/microlens arrangement is provided. The spectrometer can include a controller; an image sensor with a pixel array formed by a plurality of pixels coupled to the controller; and an optical layer over the image sensor. The optical layer can include a plasmonic microlens array having a plurality of microlenses positioned over the spacer layer, each microlens of the plasmonic microlens array focusing light on one of the plurality of pixels, and a plasmonic filter array arranged with the plasmonic microlens array such that light incident on each of the plurality of pixels has a transmission function. The microlenses and plasmonic filters can be formed of a composite structure.