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Depth and concentration estimation

Haswell, S.J., Fletcher, P.D.I. and Zhang, X. (Inventors) (2003) Depth and concentration estimation EP1271129.

Record type: Patent


A method of estimating dimensions of an opening (36) in a body (26) comprises filling the opening (36) with a fluid that absorbs an electromagnetic radiation (40). The radiation (40) is transmitted through the body (26) and through the fluid in the opening (36). The intensity of the electromagnetic radiation, after transmission through the fluid, is determined at an area that corresponds to a radiation path through the fluid in the opening. The intensity is used to determine the absorbance of the fluid in the radiation path and consequently the length of the radiation path. In an alternative method, when the depths of the opening are already known, the intensity is used to determine concentration of a chemical in the opening.

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Published date: 2 February 2003


Local EPrints ID: 49151
PURE UUID: 92976af9-f16d-43b8-9f4f-310aa8542ea1

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Date deposited: 26 Oct 2007
Last modified: 17 Jul 2017 14:57

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Inventor: S.J. Haswell
Inventor: P.D.I. Fletcher
Inventor: X. Zhang

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