Spectral imaging in a snapshot

A R Harvey, D W Fletcher-Holmes, A Gorman, K Altenbach, Jochen Arlt, N D Read, G H Bearman (Editor), A Mahadevan-Jansen (Editor), R M Levenson (Editor)

Research output: Chapter in Book/Report/Conference proceedingOther chapter contribution


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. Proof-of-concept demonstrations are reported for imaging of the ocular fundus and microscopy of fluorescently labelled living cells.
Original languageEnglish
Title of host publicationSpectral Imaging: Instrumentation, Applications, and Analysis III
Number of pages10
Publication statusPublished - 2005


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