fairfolio
Saved Projects

Using an Inexpensive Night Vision Camera as a Detector in NIR Spectroscopy

JSHS · 2024

Cayden Shen, Dr. Allyson Weseley, Dr. Jim Jr-Min Lin · Roslyn High School, Roslyn Heights, NY

Is this your project?

Overview

Near Infrared (NIR) Spectroscopy is a technique that measures wavelengths from 780 nm to 2500 nm to determine the chemical composition of a sample, making it useful in various applications, from detecting adulteration in food products to determining fruit ripeness. Recent efforts have aimed to increase the accessibility of spectrometers to consumers by lowering the cost of spectrometers by utilizing digital cameras as detectors in visible range spectrometers. This study investigated the potential use of common night vision cameras as detectors in NIR spectrometers. The design utilized an SQ13 mini camera as a detector to take the spectra of fluorescent, tungsten, and neon lamps. Initial measurements used to calibrate and determine the resolution of the spectrometer were done without any covering to block outside. Using the program ImageJ, the spectra was successfully extracted from the image, calibrated to wavelength, and calculated its full width at half maximum (FWHM) - the width of the peaks at half the height of the peak - to determine the spectrometer’s resolution. A base/container for the spectrometer was later designed to secure the optical parts and block outside light for more accurate measurements. Calibrating the spectrometer was again, its resolution was calculated to have a FWHM of 6.767 nm. While this project demonstrates that a common $20 night vision camera can be used to measure a spectra with low resolution, future studies are needed to improve the design and to test its ability to measure chemical samples.

Working on something like this? See what's been done and what's still open.

Competition history

  • JSHS 2024 Category not listed

Resources

Related projects

Closest projects by meaning, across every fair and year in the corpus.

Browse more like this

Report a problem

Source: Junior Science and Humanities Symposium

Save projects to your library

Sign in with Google to keep track of projects you find interesting, organized into folders. An account also raises your daily allowance for “Has this been done?”, and lets you create a key for the MCP server with a much higher limit than anonymous use. Browsing stays public.

Continue with Google