Patent ID: 6464798
Filing Date: 2002-10-15
Classification: A47L,G01J,G01N

Abstract:
A method for treating dishes in a dishwasher, which comprises:radiating a radiation into a washing liquid in a given direction; detecting a radiation quantity of a radiation emerging from the washing liquid substantially in the given direction, of a radiation emerging as a scattered radiation from the washing liquid substantially perpendicular to the given direction, and of a radiation emerging as a backscattered radiation from the washing liquid substantially opposite to the given direction for at least a given wavelength range; processing signals representing the detected radiation quantity; based upon the signals, determining data selected from the group consisting of a type, a concentration, and a prevailing size of the group consisting of a dirt component in the washing liquid, a cleaning agent component in the washing liquid, and suspended particles in the washing liquid based upon the detected radiation quantity of the emerging radiation; and optimizing a washing program with the determined data.