MARINE LIDAR SYSTEM

An ultra-compact optical receiver supporting the laser scanning of objects in three-dimensions is disclosed. The receiver's narrow field-of-view may track the movement of a transmit beam, allowing isolation of a reflected receive signal from sensitivity reducing solar background and interfering...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Hall, Heidi L, Lewis, Robert A, Bietry, Joseph R
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	An ultra-compact optical receiver supporting the laser scanning of objects in three-dimensions is disclosed. The receiver's narrow field-of-view may track the movement of a transmit beam, allowing isolation of a reflected receive signal from sensitivity reducing solar background and interfering signals. Small portions of a full receive field may be selected using a Digital Light Projector (DLP) micromirror array by placing a small portion of the mirror array elements into a "pass-state" allowing light to be directed towards the optical detector. The remaining mirror elements can be placed into a "dump state" where light is directed away from the detector. Furthermore, a unique total internal reflection (TIR) prism configuration may be used to allow the incoming receive signal to pass directly to the DLP mirror array while directing the light from pass and dump state DLP mirror orientations to the detector or optical absorbing regions of the receiver respectively.