Sensor array spectrometer

US12066329B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• John A. Wheatley · Stillwater, US
• Mark A. Roehrig · Stillwater, US
• Audrey A. Sherman · Windom, US
• Del R. Lawson · Cottage Grove, US
• Gilles J. Benoit · Minneapolis, US
• Daniel J. Schmidt · Woodbury, US
• Jonah Shaver · Okabena, US
• Raymond J. Kenney · Woodbury, US
• Zhaohui Yang · Beijing, CN

Key dates

• Filing date: Mar 19, 2020
• Grant date: Aug 20, 2024
• Expiry date: Sep 17, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01L25/167
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An optical device is disclosed and includes an optical sensor, a plurality of photosensitive pixels disposed on the optical sensor, a wavelength-selective optical filter in optical communication with the photosensitive pixels, and a plurality of spatially-variant written regions disposed in the optical filter, the written regions having a transmission spectrum and each of the written regions being larger than each of the pixels.