Nederlandse Organisatie Voor Toegepast-natuurwetenschappelijk Onderzoek Tno

Niels Dijkhuizen

James Peter Robert Day

Gerard Christiaan Jurjen Otter

Marcela Pelica Pascoa

Ralph Claude Snel

A method and device () for making a calibrated measurement of light from an object (E). In a first measurement window (W), object light (L) is received from the object (E) onto a beam splitter () which splits the light into a signal path (Ps) and a reference path (Pr). A first signal (S=T·L·Hs) is measured by a signal detection element () in the signal path (Ps). A second signal (S=R·L·Hr) is measured by a reference detection element () in the reference path (Pr). In a second measurement window (W), calibration light (L) is received onto the beam splitter (). A third signal (S=R·L·Hs) is measured by the signal detection element () in the signal path (Ps). A fourth signal (S=T·L·Hr) is measured by the reference detection element () in the reference path (Pr). A measurement value of the object light (L) is determined based on the measured signals (S,S,S,S).

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Zoetermeer, Netherlands

Niels Dijkhuizen