Method and device for quantification of plant chlorophyll content

US10175215B2 · kind B2 · utility

Assignee

• The Regents of the University of California · US

Inventors

• Aydogan Ozcan · Los Angeles, US
• Bingen Cortazar · Los Angeles, US
• Hatice Ceylan Koydemir · Los Angeles, US
• Derek Tseng · Buena Park, US
• Steve Wei Feng · Los Angeles, US

Key dates

• Filing date: Dec 21, 2015
• Grant date: Jan 8, 2019
• Expiry date: Dec 29, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2201/0634
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A system for measuring chlorophyll concentration in a leaf sample includes a leaf-holding illuminator device with a main body containing a power source, a plurality of switchable light sources emitting light at different spectra (e.g., red and white light from a broadband light source), and a cap detachably secured to the main body using one or more fastening means. The leaf sample is interposed between the main body and the cap and held in place during imaging. The system includes a mobile electronic device having a camera configured to capture an image of the leaf illuminated by the plurality of switchable light sources, the mobile electronic device having wireless connectivity to a network and an application contained therein configured to transfer the images to a remote sever or computer via the network for data processing. A final chlorophyll index value is calculated based on the transferred images.