Method of detecting and evaluating photometric signals and devic

Details Method of detecting and evaluating photometric signals and devic Method of detecting and evaluating photometric signals and devic

1982-08-31

1985-11-19

Rosenberger, R. A.

Optics: measuring and testing

Of light reflection

By comparison

356226, 356236, G01J 100, G01D 100, G01N 2100, G01N 3350

Patent

active

045538484

ABSTRACT:
A method and device for detecting and evaluating the optical properties of a specimen, utilizing a light source that has alternating light and dark phases, a detector that picks up light from the light source by way of the specimen being examined, and a circuit that integrates and digitalizes the signals received from the detector, that includes an integrator, and that can be connected to the detector. The signals emitted from the detector are integrated both during at least part of the light phase and during at least part of the dark phase. The integral obtained during the dark phase is subtracted from that obtained during the light phase in order to determine the results. The integrator that is used to integrate the signals is used like an analog-to-digital converter of the double-integration type to convert the integral into a digital signal. To achieve maximum precision and simplicity in the integration and digitalization phase, each part of the light or dark phase is followed by a measurement-voltage period during which the signals coming from the detector are applied in sequence and with opposite mathematical signs to a single integrator. Integration is carried out over a whole number of measurement-voltage periods to form a total integral.

REFERENCES:
patent: 3684378 (1972-08-01), Lord
patent: 3738755 (1973-06-01), Chaney et al.
patent: 4061925 (1977-12-01), van der Gaag et al.
patent: 4124301 (1978-11-01), Pocock
patent: 4201472 (1980-05-01), Maeda
patent: 4320970 (1982-03-01), Dowben et al.
patent: 4381152 (1983-04-01), Riech et al.
Stark, Georg, "Fotometer fur die Absorptionmessung im Durchlicht," Electronik, 1975, No. 12, pp. 65-68.

Affiliated with

Also associated with

Rating

Method of detecting and evaluating photometric signals and devic does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of detecting and evaluating photometric signals and devic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of detecting and evaluating photometric signals and devic will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-81049