The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 28, 1996
Filed:
Apr. 20, 1994
Paul M Mileski, Mystic, CT (US);
Roger L Morency, Voluntown, CT (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A system for sensing motion of an object in an underwater environment is vided. The system has a circuit board, a light-emitting diode, an infrared filter, an integrated circuit, and an acrylic transparent housing. The light-emitting diode and the integrated circuit are mounted on the circuit board. The integrated circuit has a photoelectric transducer and a low-noise amplifier. The housing surrounds and seals the diode, the filter, the integrated circuit, and the board from exposure to the underwater environment. The housing also provides a convex lens on one end which corresponds with the direction in which the diode emits infrared radiation. The convex lens spreads the radiation emitted from the diode. The emitted radiation approaches and reflects back from the moving object. The convex lens also spreads this reflected radiation. The infrared filter screens unwanted radiation. The photoelectric transducer converts the filtered radiation into an electrical signal which the low-noise amplifier amplifies. The output of the amplifier is then recorded and correlated to the motion of the object underwater.