Multifunctional photometer apparatus

Details Multifunctional photometer apparatus Multifunctional photometer apparatus

1997-11-13

1998-10-20

Evans, F. L.

Optics: measuring and testing

For optical fiber or waveguide inspection

356411, 356414, 356419, G01N 2127, G01N 2153

Patent

active

058254781

ABSTRACT:
A photometer for measuring electromagnetic radiation absorption of a sample utilizing a source of the electromagnetic radiation. Electromagnetic radiation is conducted from the source, to a sample sensor or sensors, and is passed through or scattered from, the sample utilizing a sample cell. The electromagnetic radiation is then directed to a detection system which determines absorbance of electromagnetic radiation by the sample at the sample cell. The detection system includes a beam splitter which receives the electromagnetic radiation and outputs first and second beams. A first detector having a first wavelength filter and a second detector having a second wavelength filter receives the two beams from the splitters. One detector may be employed to produce a reference signal. The remaining detector or detectors produce an output signal which is a representation of a characteristic, such as absorbance of the sample. The output signals are compared to a reference signal, and converted into a measurement of absorbance, transmission, reflectance, or turbidity.

REFERENCES:
patent: 3532434 (1970-10-01), James, Jr. et al.
patent: 3941487 (1976-03-01), Ehret et al.

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