Abstract

The specification describes a method for monitoring a characteristic of a mixture of particles suspended in a liquid medium by generating a first interference signal by combining first and second radiation beams after the first beam traverses a reference path and the second beam traverses a path extending into the mixture, allowing the particles in the mixture to partially settle, then generating a second interference signal by the same technique as used for the first. The second interference signal is then compared to the first interference signal to determine a change in, e.g., the particle density.

Document Type

Patent

Patent Number

US 6,559,950 B1

Application Serial Number

09/690,904

Issue Date

5-6-2003

Current Assignee

Agency: Credit Suisse Securities (USA) LLC

Assignee at Issuance

Agency: Lucent Technologies, Inc.

College

College of Optics and Photonics

Department

CREOL

Filing Date

10-18-2000

Assignee at Filing

Agency: Lucent Technologies, Inc.

Filing Type

Nonprovisional Application Record

Donated

no

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