The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 2025
Filed:
Nov. 02, 2021
The Board of Trustees of the Leland Stanford Junior University, Stanford, CA (US);
Nathan Zhao, Stanford, CA (US);
Peter B. Catrysse, Redwood City, CA (US);
Shanhui Fan, Stanford, CA (US);
The Board of Trustees of the Leland Stanford Junior University, Stanford, CA (US);
Abstract
The present disclosure is directed toward systems for providing color-selective light detection and/or image sensing in a substantially lossless manner, thereby providing higher and up to nearly perfect optical efficiency. Embodiments disclosed herein include a plurality of pixel-repeat units, each including a color router that is configured to selectively route photons of each wavelength signal in a light signal to a different photodetector of the pixel-repeat unit. In some embodiments, the color router also functions as an anti-reflection coating that mitigates reflection of incident light, as well as a lensing system that directs substantially all photons of each wavelength signal only to their corresponding photodetector. As a result, the photodetectors collect more light than possible using prior-art absorptive color filters, thereby enabling smaller photodetectors to be used. Therefore, scaling of image sensor photodetectors to sub-wavelength sizes is possible.