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dc.contributor.authorKrantz, EP-
dc.contributor.authorWatson, J-
dc.contributor.authorHobson, PR-
dc.contributor.authorLampitt, RS-
dc.contributor.authorRogerson, A-
dc.identifier.citationProceedings of SPIE. 2774(1996): 189-198en
dc.description.abstractWe describe a holographic system for recording particles suspended in water. The hologram plate is located in air, separated from the test tank by an air/glass/water boundary. The holographic emulsion is therefore unaffected by adverse aquatic conditions within the tank (i.e. surface contamination, non-uniform swelling). The design geometry is intended to minimise the aberrations that arise from recording subjects located in water and replaying their hologram image in air. Third order aberrations, most crucially spherical aberration and astigmatism, are suppressed to give an experimental resolution of 7 lp/mm using USAF 1951 target in water 600mm from the boundary. Particles (plankton species) in the sub-millimeter to several millimeters size range are observed at planar sections within the recording volume by visual inspection of the hologram replayed in real image mode.en
dc.format.extent629761 bytes-
dc.rightsCopyright 1996 Society of Photo-Optical Instrumentation Engineers. This paper was published in Proceedings of SPIE volume 2774 and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.en
dc.subjectOff-axis hologramen
dc.titleOff-axis transmission holographic system for recording aquatic particlesen
dc.typeConference Paperen
Appears in Collections:Electronic and Computer Engineering
Dept of Electronic and Computer Engineering Research Papers

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