MULTIUSE OPTICAL SENSOR
1 Assignment
0 Petitions
Accused Products
Abstract
One or more electromagnetic radiation sources, such as a light emitting diode, may emit electromagnetic waves into a volume of space. When an object enters the volume of space, the electromagnetic waves may reflect off the object and strike one or more position sensitive detectors after passing through an imaging optical system such as glass, plastic lens, or a pinhole located at known distances from the sources. Mixed signal electronics may process detected signals at the position sensitive detectors to calculate position information as well as total reflected light intensity, which may be used in medical and other applications. A transparent barrier may separate the sources and detectors from the objects entering the volume of space and reflecting emitted waves. Methods and devices are provided.
15 Citations
60 Claims
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1-40. -40. (canceled)
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41. A method for determining a blood pressure, comprising:
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determining a pressure exerted on a surface by a body part that is pressed against the surface; determining a photoplethysmograph of the body part; and determining the blood pressure as a function of the pressure exerted on the surface and the photoplethysmograph. - View Dependent Claims (42, 43, 44, 45, 46, 47)
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48. A device for determining a blood pressure, comprising:
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means for determining a pressure exerted on a surface by a body part that is pressed against the surface; means for determining a photoplethysmograph of the body part; and means for determining the blood pressure as a function of the pressure exerted on the surface and the photoplethysmograph. - View Dependent Claims (49, 50, 51, 52, 53, 54)
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55. A device for determining a blood pressure, comprising:
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at least one light source emitting electromagnetic radiation; a surface arranged in a vicinity of the at least one light source; a detector sensing the electromagnetic radiation reflected from a body part on the surface; and electronics; determining a pressure exerted on the surface by the body part; determining a photoplethysmograph of the body part; and determining the blood pressure as a function of the pressure exerted on the surface and the photoplethysmograph. - View Dependent Claims (56, 57, 58, 59, 60)
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Specification