June 9, 2021
Blocking in an Optical Filter
To understand blocking, one has to understand the concept of optical density (OD). In an interference filter, OD is generated by reflecting unwanted light back instead of letting it go through the filter.
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August 15, 2018
Gradient Index Film Fabrication Using Optical Control Techniques
Proc. SPIE 2046, Inhomogeneous and Quasi-Inhomogeneous Optical Coatings, 224 (November 2, 1993); http://dx.doi.org/10.1117/12.163553
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August 15, 2018
Measuring Sharp Spectral Edges to High Optical Density
56th Annual Technical Conference Proceedings of the Society of Vacuum Coaters, (2013). Reproduced by permission of the Society of Vacuum Coaters.
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August 15, 2018
Measurement and Alignment of Linear Variable Filters
Proc. SPIE 10539, Photonic Instrumentation Engineering V, 105390Y (2018); http://dx.doi.org/10.1117/12.2290689
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August 14, 2018
Laser-based Assessment of Optical Interference Filters with Sharp Spectral Edges and High Optical Density
Surface & Coatings Technology 241 (2014), 54-58 (Oct 5, 2013); http://dx.doi.org/10.1016/j.surfcoat.2013.09.054
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LED Application Note
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