Inexpensive LED-Based Optical Coating Sensor

Optical coatings are widespread in everyday life, from camera lenses and glasses, to complex optics experiments. Thus, a simple, reliable sensor that can quickly and inexpensively analyze optical coatings is a valuable laboratory tool. Such a device can help identify optical coatings and characteriz...

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Bibliographic Details
Published in:IEEE sensors journal 2017-10, Vol.17 (19), p.6224-6231
Main Authors: Hardie, Kayla, Agne, Sascha, Kuntz, Katanya B., Jennewein, Thomas
Format: Article
Language:English
Subjects:
Coatings
Lenses
Light emitting diodes
Microscopes
Optical coatings
Optical components
optical filters
optical losses
Optical sensors
Optical variables measurement
optics
photodetectors
Sensors
Spectral analysis
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Summary:Optical coatings are widespread in everyday life, from camera lenses and glasses, to complex optics experiments. Thus, a simple, reliable sensor that can quickly and inexpensively analyze optical coatings is a valuable laboratory tool. Such a device can help identify optical coatings and characterize the transmission spectra of optical components used in an experiment. We present the design and characterization of a LED-based spectrophotometer and demonstrate its ability to identify different optical coatings. Our approach uses ten LEDs that cover a spectrum from 365 nm to 1000 nm. The optical coating sensor is automated, portable, inexpensive, user-friendly, and simple to build.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2017.2740208