Accurate turbidity measurement system and method, using speckle pattern
AssigneeThe Wave Talk, Inc.
InventorsYoung Dug Kim, Kyoung Man Cho
Life of this patent
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Abstract
Provided is an accurate turbidity measurement system and method, using a speckle pattern, in which a speckle pattern may be used for turbidity measurement, thereby enabling turbidity and bacterial or microbial contamination to be measured with high accuracy. The system may include: a measuring container which has a light input part formed in one side thereof, has a light scattering space formed therein, and has a light output part formed in the other side thereof; and an optical dilution member which is formed in at least a portion of the light scattering space, has a sample receiving part formed in one side thereof, and comprises an optical dilution medium having a role of optically diluting a speckle pattern of the sample.
Claims8
An accurate turbidity measurement system using a speckle pattern, the system comprising:
- a measuring container which has a light input part disposed in one side thereof and configured to enable laser light to be inputted, has a light scattering space defined therein and configured to enable multiple reflection or multiple scattering of the laser light through multiple paths, and has a light output part disposed in an other side thereof and configured to enable a measurement of micro-turbidity by using the speckle pattern generated in the light scattering space;
- an optical dilution member which is disposed in at least a portion of the light scattering space, has a sample receiving part disposed in one side thereof and configured to receive a sample being measured, and comprises an optical dilution medium configured to dilute the speckle pattern of the sample and enable the measurement of the micro-turbidity of the sample;
- a laser source configured to emit the laser light to the light input part;
- a first camera configured to photograph the speckle pattern of the light output part;
- and
- a speckle pattern variation calculation part configured to measure a variation over time of the speckle pattern using video information received from the first camera,
- wherein the speckle pattern variation calculation part is configured to calculate a micro-turbidity value proportionally by multiplying a measured turbidity value obtained from the variation of the speckle pattern with a multiple of an area of the optical dilution member based on an area of the sample.
An accurate turbidity measurement method using a speckle pattern, the method comprising:
- emitting laser light into a measuring container through a light input part;
- enabling multiple reflection or multiple scattering of the laser light through multiple paths using a light scattering space of the measuring container, wherein a part of the laser light passes through a sample and exhibits the speckle pattern, and another part of the laser light passes through an optical dilution medium that optically dilutes the speckle pattern of the sample;
- and
- measuring micro-turbidity of the sample by measuring the optically diluted speckle pattern of the sample through a light output part of the measuring container,
- wherein, in the measuring the micro-turbidity, the micro-turbidity is calculated proportionally by multiplying a turbidity value obtained from a measured variation of the speckle pattern with a multiple of an area of the optical dilution medium based on an area of the sample.
Dependencies are inferred from the claim text.