Ultrasonic cleaning appts. for exposed surface of imaging system - projects liq. film on to convex portion of window for atomisation by LV excited piezoelectric resonance

The window (1) shielding e.g. a CCD imaging camera matches the curvature of the lens (3) and is vibrated by an annular piezoceramic element (2) bonded e.g. by epoxy resin to the outer surface of its tubular portion sealed (7) into a capsule (6). Capillary waves (4) are excited in a film of liq. cont...

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Bibliographische Detailangaben
Hauptverfasser:	ARDITI, MARCEL., GENF, CH, RISCHBIETER, FRITZ., 6231 SCHWALBACH, DE, LIERKE, ERNST-GUENTER., 6231 SCHWALBACH, DE, DECKER, HANS-JOACHIM, 6200 WIESBADEN, DE
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES CLEANING CLEANING IN GENERAL DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHYSICS PREVENTION OF FOULING IN GENERAL RADIO DIRECTION-FINDING RADIO NAVIGATION SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, ORMANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR TESTING TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	The window (1) shielding e.g. a CCD imaging camera matches the curvature of the lens (3) and is vibrated by an annular piezoceramic element (2) bonded e.g. by epoxy resin to the outer surface of its tubular portion sealed (7) into a capsule (6). Capillary waves (4) are excited in a film of liq. contg. alcohol or similar detergent sprayed on to the convex surface from an annular nozzle (5). The liq. is atomised and any contaminant particles are dislodged from the surface. USE/ADVANTAGE - In an optical imaging or radar system, esp. on a vehicle, an inexpensive and reliable low-voltage appts. avoids heating of the piezoelectric resonator element.