We describe a new filter that simultaneously achieves spectral filtering and image replication to yield a two-dimensional, snapshot spectral imager. Filtering is achieved by spectral demultiplexing; that is without rejection of light; so optical throughput efficiency is, in principle, unity. The principle of operation can be considered as a generalisation of the Lyot filter to achieve multiple bandpasses. We report on the design and experimental implementation of an eight-band system for use in the visible and the design of an eight-band long-wave infrared system.
|Number of pages||9|
|Journal||Proceedings of SPIE - the International Society for Optical Engineering|
|Publication status||Published - 2004|
|Event||Advanced Free-Space Optical Communications Techniques and Technologies - London, United Kingdom|
Duration: 27 Oct 2004 → 28 Oct 2004