Infrared detector with direction identification capability

US4914298A · kind A · utility

Assignee

• Heimann GmbH · DE

Inventors

• Reiner Quad · Taunusstein, DE
• Karlheinz Storck · Lorch, DE

Key dates

• Filing date: Apr 1, 1988
• Grant date: Apr 3, 1990
• Expiry date: Apr 1, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S250/01
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An infrared detector includes process and circuitry for detecting the direction of movement of a radiation source with a predetermined resolution. Four radiation-sensitive elements defining a square are provided in the detector, each connected to an evaluation circuit which compares the output signals from the elements. A normalized pulse is generated upon the occurrence of the maximum of the output signal from each of the elements. The direction of movement of the radiation source is identified from the chronological sequence and spacing of the normalized pulses.