Hamamatsu-photonics K.k.

Stichting Nederlands Instituut Voor Zuivelonderzoek (nizo)

Goro Nishimura

Yutaka Yamashita

Arjun Gaurang Yodh

Kazuyoshi Ohta

Motoki Oda

Mamoru Tamura

Cornelis Gijsbertus De Kruif

David Allan Weitz

Erik Ten Grotenhuis

Arrangement for measuring physico-chemical properties of liquid, such as solutions, dispersions and emulsions. The arrangement comprises a light source for producing and emitting light in the liquid, a detector for detecting said light after being scattered by said liquid, processing means arranged for receiving an output signal from said detector. The processing means is further arranged to calculate a maximum value of the mean square displacement <&Dgr;r > from the autocorrelation function g as a function of time and the value of the property from said calculated maximum value of the mean square displacement <&Dgr;r >.

Arrangement and method to apply diffusing wave spectroscopy to measure the properties of multi-phase systems, as well as the changes therein

Optical pulses emitted from an optical pulse source is incident on a living tissue and is input to an optical sampling unit. An optical sampling unit detects intensities, f, of optical pulses detected at the respective timings of trigger signals input from a delay unit. A first accumulator calculates products, t.multidot.f, of the intensities f and the delay times t from the delay unit. A second accumulator accumulates the light intensities f. An average optical pathlength calculating unit calculates an average optical pathlength using the accumulation results as the products t.multidot.f and the intensities f. An SO.sub.2 value calculating unit calculates a ratio of V.sub.HbO2 to V.sub.Hb from the average optical pathlength to calculate an SO.sub.2 value.

Method and apparatus for measuring concentration of absorptive

Growing community of inventors

Sapporo, Japan

Goro Nishimura