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US 5,399,499 AGranted
Method of using multiwavelength upconversion for sample element interrogation in medical diagnostic equipment
AssigneeEastman Kodak Company
InventorsGustavo R. Paz-Pujalt, Charles R. Moon, James M. Chwalek, David D. Tuschel, Dilip K. Chatterjee
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Abstract
Disclosed is a source of visible and ultraviolet radiation that provides a focused beam for performing chemical analysis of a test element having a biological fluid deposited thereon.
Claims5
A method of optically testing a sample of a biological fluid which is used in clinical diagnostics comprising the steps of:
- a) providing a radiation upconversion phosphor layer or crystal exhibiting upconversion radiation when excited by visible or infrared irradiation from an independent source;
- b) exciting the layer or crystal to provide a source of light;
- and
- c) projecting such excited light onto a sample containing a biological fluid, in the presence of a chemically interactive material that produces a quantitative, detectable and measurable change.
1 more element
Dependencies are inferred from the claim text.