Development of a low cost SWIR spectrometer for low resource settings (Conference Presentation)

Matthew D. Keller; James W. Stafford; Wenbo Wang; Ryan Calderon; Benjamin K. Wilson

doi:10.1117/12.2512007

4 March 2019 Development of a low cost SWIR spectrometer for low resource settings (Conference Presentation)

Matthew D. Keller, James W. Stafford, Wenbo Wang, Ryan Calderon, Benjamin K. Wilson

Proceedings Volume 10869, Optics and Biophotonics in Low-Resource Settings V; 1086916 (2019) https://doi.org/10.1117/12.2512007
Event: SPIE BiOS, 2019, San Francisco, California, United States

Abstract

Optical spectroscopic devices have historically been too expensive or not portable enough to take full advantage of their abilities to offer real-time, on-site, objective results, especially in the developing world. Recent advancements toward smaller and cheaper hardware, especially in the visible and near infrared (NIR) ranges, could enable widespread use in low resource settings, down to a rural health clinic or at the individual farm level. We recently designed and tested a spectroscopic device with these goals in mind. It is based on an initial commercial version of a low cost MEMS spectral detection chip operating in the NIR, or more properly short wave infrared (SWIR) region. Custom optics, electronics, and mechanical designs were created to produce a complete handheld system capable of operation in the lab or in the field. Initial lab testing indicated excellent reproducibility both within and between five different devices. We have verified desired performance (e.g. acceptable signal to noise for target integration times, spectral features equivalent to lab-grade devices, etc.) for applications including pharmaceutical analysis and for analyzing multiple agricultural materials, including soils, plants, fertilizers, and manures. We have also developed a custom mobile app to accompany the devices in upcoming field testing, which will validate their performance in realistic settings in sub-Saharan Africa.

Conference Presentation

Citation Download Citation

Matthew D. Keller, James W. Stafford, Wenbo Wang, Ryan Calderon, and Benjamin K. Wilson "Development of a low cost SWIR spectrometer for low resource settings (Conference Presentation)", Proc. SPIE 10869, Optics and Biophotonics in Low-Resource Settings V, 1086916 (4 March 2019); https://doi.org/10.1117/12.2512007

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Short wave infrared radiation

Spectroscopy

Near infrared

Spectroscopes

Electronics

Infrared detectors

Infrared radiation

Show All Keywords

Keywords/Phrases

Search In:

Publication Years