Title:
ESTIMATING METHOD FOR CHLOROPHYLL CONTENT OF LEAF AND ESTIMATING DEVICE USING IT
Document Type and Number:
Japanese Patent JP3579628
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enhance estimation accuracy even when chlorophyll content is high.
SOLUTION: Induced light of a shorter wavelength than blue light such as ultraviolet light is shone on a leaf which is the measurement object. Fluorescence irradiated from the leaf by the induced light is received for measuring a spectrum. The chlorophyll content of the leaf is estimated on the basis of a ratio of a peak intensity of chlorophyll fluorescence in the fluorescence spectrum and a peak intensity of fluorespence in a blue-green region such as F460/F740 and a correlation between the ratio and the chlorophyll content of the leaf.
Inventors:
Ko Nakaya
Application Number:
JP2000072065A
Publication Date:
October 20, 2004
Filing Date:
March 15, 2000
Export Citation:
Assignee:
CENTRAL RESEARCH INSTITUTE OF ELECTRIC POWER INDUSTRY
International Classes:
G01N21/64; (IPC1-7): G01N21/64
Domestic Patent References:
| JP2001527213A |
Attorney, Agent or Firm:
Kazumi Murase
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