Title:
METHOD FOR MEASURING SPECTRAL DISTRIBUTION OF LIGHT SOURCE AND METHOD FOR MEASURING SPECTRAL RESPONSIVENESS OF PHOTODETECTOR SYSTEM
Document Type and Number:
Japanese Patent JPH03138538
Kind Code:
A
Abstract:
PURPOSE:To make easy measurement by adopting the constitution to measure the photodetector output of every set wavelength via a monochrometer for the light from a sample surface and comparing the respective values of the reflection spectral radiation luminance rate, relative external fluorescent radiation efficiency and relative spectral distribution of the fluorescent component thereof and known data values. CONSTITUTION:The total spectral radiation luminance rate betaw(lambda) of the i-th fluorescent sample is determined from Yw(lambda), Yt,x,i(lambda) when the photodetector output obtd. by installing a normal standard white surface on the sample surface is designated as Yw(lambda), and the photodetector output obtd. by installing the i-th (i=1 to n) fluorescent sample as Yf,x,i(lambda) (i=1 to n), the spectral radiation luminance rate betaw(lambda) of the above-mentioned normal standard white surface and equation I. The effective excitation efficiency ND,I under the light source SD(mu) for photometry of the i-th fluorescent sample is determined from the relative external fluorescent radiation efficiency Qx,i(mu) of the i-th fluorescent sample when the spectral distribution of the light source D for photometry of the known value is designated as SD(lambda) and equation II. Further, the spectral distribution SX(lambda) of the light source X is determined from the reflected spectral radiation luminance rate betao,i(lambda) of the i-th fluorescent sample, the relative spectral distribution Fi, (lambda) of the fluorescent component, the total spectral radiation luminance rate betat,x,i(lambda), and the effective excitation efficiency ND,I and equation III.
Inventors:
ICHIJO TAKASHI
Application Number:
JP27824389A
Publication Date:
June 12, 1991
Filing Date:
October 25, 1989
Export Citation:
Assignee:
TOSHIBA LIGHTING & TECHNOLOGY
International Classes:
G01J3/443; G01J3/50; (IPC1-7): G01J3/443; G01J3/50
Attorney, Agent or Firm:
Junichi Izumi (1 person outside)
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