Methods and apparatus for spectral imaging

US10240980B2 · kind B2 · utility

Assignee

• Massachusetts Institute of Technology · US

Inventors

• Juejun Hu · Newton, US
• Tian Gu · Fairfax, US
• Kazumi Wada · Lexington, US
• Anuradha M. Agarwal · Weston, US
• Lionel C. Kimerling · Concord, US
• Derek Kita · Cambridge, US
• Junying Li · Somerville, US
• Fleur Jacolien Fok · Delft, NL

Key dates

• Filing date: May 23, 2017
• Grant date: Mar 26, 2019
• Expiry date: May 23, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G01J2003/1226
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An apparatus for generating a spectral image includes a filter to receive incident light. The filter has a variable refractive index. The apparatus also includes a modulator, operably coupled to the filter, to modulate the variable refractive index of the filter so as to generate a plurality of optical patterns from the incident light. The plurality of optical patterns represents the spectral image and each optical pattern in the plurality of optical patterns corresponds to a different modulation of the variable refractive index. The apparatus further includes a detector, in optical communication with the filter, to detect the plurality of optical patterns.