Method and apparatus for monitoring a condition in...

Radiant energy – Luminophor irradiation

Reexamination Certificate

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C250S459100

Reexamination Certificate

active

10332888

ABSTRACT:
A method of monitoring health in chlorophyll containing matter comprises exposing the matter to a light source to cause chlorophyll to fluoresce and emit a fluorescence signal. Any changes in a parameter indicative of changes in the intensity of the fluorescence signal are detected and compared with a predetermined threshold. A change which exceeds the predetermined threshold is interpreted as a transition of the level of stress in the chlorophyll containing matter. An apparatus for monitoring health in chlorophyll containing matter is also provided and comprises a light source for causing chlorophyll in the matter to fluoresce, a detector for detecting the intensity the fluorescent signal, means for measuring changes in a parameter indicative of changes in the intensity of the fluorescent signal and a detector to detect an increase in the change of the parameter above a predetermined threshold.

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patent: 6563122 (2003-05-01), Ludeker et al.
patent: 35 18 527 (1986-11-01), None
patent: WO/2000/025114 (2000-05-01), None
Prange et al., “Chlorophyll Fluorescence Detects Low Oxygen Stress In ‘Elstar’ Apples,”Proceedings of the National Controlled Atmosphere Research Conference on Controlled Atmospheres for Storage and Transport of Perishable Agricultural Commodities(1997) 2:57-64.

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