Abstract

The optical components described here are variable narrow-band transmission filters, where the transmittance peak varies with the position along the surface of the filter itself. They allow the construction of ultracompact and low-weight spectrometers for space applications. The theoretical behavior of graded filters has been already investigated by the authors, for imaging spectrometry of the Earth surface. The application of graded filters to miniaturized instruments for planetary missions (Mercury) is considered. Experimental results on the fabrication of small-dimension variable transmission filters operating over a wide spectrum, from visible to near infrared, are reported.

© 2007 Optical Society of America

Variable narrowband transmission filters with a wide rejection band for spectrometry

Angela Piegari and Jiri Bulir
Appl. Opt. 45(16) 3768-3773 (2006)

Two-dimensional analytical modeling of a linear variable filter for spectral order sorting

Cheng-Hao Ko, Yueh-Hsun Wu, Jih-Run Tsai, Bang-Ji Wang, and Symphony Chakraborty
Appl. Opt. 55(17) 4531-4537 (2016)

Linear variable filters for NASA’s OVIRS instrument: pushing the envelope of blocking

Karen Hendrix
Appl. Opt. 56(4) C201-C205 (2017)

Reliable deposition of induced transmission filters with a single metal layer

Anna Sytchkova
Appl. Opt. 50(9) C90-C94 (2011)

Low-cost hyper-spectral imaging system using a linear variable bandpass filter for agritech applications

Shigeng Song, Des Gibson, Sam Ahmadzadeh, Hin On Chu, Barry Warden, Russell Overend, Fraser Macfarlane, Paul Murray, Stephen Marshall, Matt Aitkenhead, Damian Bienkowski, and Russell Allison
Appl. Opt. 59(5) A167-A175 (2020)