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HOLOGRAPHIC ANALYZER

IP.com Disclosure Number: IPCOM000022904D
Original Publication Date: 1976-Apr-30
Included in the Prior Art Database: 2004-Mar-27
Document File: 2 page(s) / 288K

Publishing Venue

Xerox Disclosure Journal

Abstract

A system for holographic based recording and analyzing of particulate distribution is described, A holographic record is made of a volume of a suspension, and reconstruction of individual planes within the volume are automatically analyzed and where desired, recorded, preferably xero~ graphically

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XEROX DISCLOSURE JOURNAL

                                  Proposed Classification
David A~Walker~-Arnott TJ.S, Cl. 250/222PC

   IntO Cl. GOld 21/04
/16

~DINGSTAT~ON

/0 6

A system for holographic based recording and analyzing of
particulate distribution is described, A holographic record
is made of a volume of a suspension, and reconstruction of

individual planes within the volume are automatically
analyzed and where desired, recorded, preferably xero~
graphically

The method for analyzing a suspension comprises coherently
illuminating a sample volume of a suspension, for example,
fog, silt in a river, particles of dust in air, etc,, with
radiation; exposing a photosensitive medium to the radiation
which has passed through the suspension; and developing the
photosensitive medium to form a hologram, The hologram,
represented by numeral 6 in the drawing is illuminated by

light source 8, for example a laser, through lens 10 so
that the image is reflected by semi~silver mirror 12 towards
recording station 16 and towards scanner 14, This provides
two images of the image plane, the first being projected to
a recording station such as a photocopier and the second to
a scanner~ The second image is scanned at scanner 14 to
provide an electrical output signal corresponding to the

second image, and the electrical output signal is compared,
for example in a comparator, with a predetermined signal
to provide a comparator output signal which causes the

'/2

Volume 1 Number 4 April 1976 47

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