Back to results
US 12,397,750 B2Granted
Method for keeping clear a viewing region of an optical monitoring device
AssigneeEchoVista Ultrasound Surface Cleaning LTD
InventorsMincheol Shin, Oliver Simon Matthews, Steffen Walter
Life of this patent
Estimating the term…
Abstract
A method of keeping a viewing area through a transparent element of an optical monitoring device clear, comprising: forming a closed film of a liquid on the transparent element, and coupling ultrasonic waves into the transparent element. The loosening of contaminations and/or adhesions to the transparent element is promoted by the ultrasonic waves coupled into the liquid film and/or the transparent element.
Claims17
A method of keeping a viewing area through a transparent element of an optical monitoring device clear of contaminations, comprising the steps of:
- forming a closed film of a liquid on the transparent element;
- coupling ultrasonic waves into at least one of the transparent element and the closed film of the liquid;
- and
- spontaneously increasing flow rate of the liquid, thereby improving removal of the contaminations from the transparent element,
- wherein the ultrasonic waves coupled into at least one of the transparent element and the closed film of the liquid promote at least one of a loosening of the contaminations and a dissolving of the contaminations,
- wherein the closed film is a flowing top layer formed by flowing the liquid from a first side of the transparent element to a second side of the transparent element, and
- wherein the transparent element comprises multiple layers including an outer layer on which the contaminations are present, and the ultrasonic waves are formed as surface waves that propagate through the transparent element only in the outer layer.
4 more elements
Dependencies are inferred from the claim text.