Optical movement sensor
First Claim
Patent Images
1. An optical movement sensor for detecting deformation of a human body, said sensor comprising:
- a belt for placement around the body, said belt having first and second ends;
a buckle having a first part attached to the first end of the belt and a second part attached to the second end of the belt;
a light transmitting sensor element connecting the first and second parts of the buckle to each other;
a transmitting light guide having an end arranged in the first part of the buckle to illuminate the sensor element;
a receiving light guide having an end arranged in the first part of the buckle to receive light from the transmitting light guide after the light passes through the sensing element;
a polarizer arranged in the first part of the buckle between the end of the transmitting light guide and the sensor element; and
an analyzer arranged in the first part of the buckle between the end of the receiving light guide and the sensor element.
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Abstract
An optical movement sensor for clearly accurately detecting deformations of a human body. The movement sensor consists of a belt with a buckle made up of two parts which are joined together mechanically by a light-transmitting sensor element. Transmitting and a receiving fibre optic light guides are connected to one part of the buckle in such a way that light emitted by the transmitting light guide passes through the sensor element by way of a polarizer and is coupled to the receiving light guide via an analyzer.
67 Citations
8 Claims
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1. An optical movement sensor for detecting deformation of a human body, said sensor comprising:
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a belt for placement around the body, said belt having first and second ends; a buckle having a first part attached to the first end of the belt and a second part attached to the second end of the belt; a light transmitting sensor element connecting the first and second parts of the buckle to each other; a transmitting light guide having an end arranged in the first part of the buckle to illuminate the sensor element; a receiving light guide having an end arranged in the first part of the buckle to receive light from the transmitting light guide after the light passes through the sensing element; a polarizer arranged in the first part of the buckle between the end of the transmitting light guide and the sensor element; and an analyzer arranged in the first part of the buckle between the end of the receiving light guide and the sensor element. - View Dependent Claims (2, 3, 4)
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5. An optical movement sensor for detecting deformation of a human body during nuclear spin tomography, said sensor comprising:
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a belt for placement around the body, said belt having first and second ends; a buckle having a first part attached to the first end of the belt and a second part attached to the secone end of the belt; a light transmitting sensor element connecting the first and second parts of the buckle to each other; a transmitting light guide having an end arranged in the first part of the buckle to illuminate the sensor element; a receiving light guide having an end arranged in the first part of the buckle to receive light from the transmitting light guide after the light passes through the sensing element; a polarizer arranged in the first part of the buckle between the end of the transmitting light guide and the sensor element; and an analyzer arranged in the first part of the buckle between the end of the receiving light guide and the sensor element; characterized in that the optical movement sensor is entirely made of nonmetallic materials. - View Dependent Claims (6, 7, 8)
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Specification