Abstract
Described herein are spectrometers comprising one or more wavelength-selective filters, such as guided mode resonance filters. Some of the spectrometers described herein are configured for obtaining absorbance spectra in a discrete fashion by measuring absorbances of a sample at multiple discrete wavelengths or wavelength bands. In another aspect, methods are also provided for obtaining spectra, images and chemical maps of samples in a discrete fashion.
| Original language | English (US) |
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| U.S. patent number | 8593630 |
| Filing date | 10/7/10 |
| State | Published - Nov 26 2013 |