Light source power modulation for use with chemical and biochemical analysis

US6353475B1 · kind B1 · utility

Assignees

• Caliper Technologies, Corp. · US
• AGILENT TECHNOLOGIES, INC. · US

Inventors

• Morten Jensen · San Francisco, US
• Patrick Kaltenbach · Bischweier, DE
• Volker Brombacher · Remchingen, DE

Key dates

• Filing date: Aug 19, 1999
• Grant date: Mar 5, 2002
• Expiry date: Aug 19, 2019

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/44721
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Systems and methods for analyzing a sample are disclosed. The system may include a light source operable to transmit light onto the sample, a detector operable to detect intensity of the light emitted from the sample, and a power modulator. The power modulator modulates the light source power such that light is emitted from the light source in more than one mode to reduce changes in the emitted light due to temperature changes in the light source.