Optics: measuring and testing – Photometers – Photoelectric
Patent
1977-03-16
1979-12-11
Hille, Rolf G.
Optics: measuring and testing
Photometers
Photoelectric
356225, 350175SL, 250227, G01J 142, G02B 514
Patent
active
041781015
ABSTRACT:
An apparatus for measuring scalar irradiance or the incident flux of radiant energy from a 4.pi. solid angle about a point. The present invention relates to an apparatus which comprises a solid spherical radiant energy collector, a radiant energy detector which converts radiant energy into electrical signal, a light conductor which transmits a portion of the radiant energy within the spherical collector to the detector, a means for conditioning the electrical signal such that the electrical signal responds to the intensity of the incident flux, and a means for displaying the conditioned signal. The apparatus further includes a spectral shaping assembly located intermediate the detector and the light conductor whereby the spectral characteristics of the radiant energy are adjusted to compensate for apparatus response in the desired spectral region.
REFERENCES:
patent: 3145249 (1964-08-01), Meltzer
patent: 3180210 (1965-04-01), Tyler
patent: 3691001 (1972-09-01), Takahashi et al.
W. S. Maddux, "A 4 .pi. Light Meter" Limnology and Oceanography, vol. 2, pp. 136-137, 1966.
T. Sasaki et al. "A 4 .pi. Underwater Irradiance Meter" Journal of the Oceanographical Society of Japan, vol. 22, No. 4, Aug. 1966, pp. 123-128.
R. I. Currie, "Scalar Irradiance as a Parameter" Radiant Energy in the Sea, International Assoc. of Physical Oceanography, pp. 107-122, 1960.
Rich & Wetzel, "A Simple Sensitive Underwater Photometer" Limnology and Oceanography, vol. 14, pp. 611-613, 1969.
Smith, R. C., Wilson Jr, W. H., "Photon Scalar Irradiance" Applied Optics, vol. 11, No. 4, Apr. 1972, pp. 934-938.
Hille Rolf G.
Verbeck Bruno J.
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