US4664129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical movement sensor
Assignee: US Philips Corp
•
Filing: 1986-04-09
•
Granted: 1987-05-12
•
Expires: 2006-04-09
Abstract
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.
Inventors
- 👤 Thomas Helzel
- 👤 Jurgen Kordts
- 👤 Gerhard Martens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:54
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/103; A61B5/11; A61B5/1107; A61B5/113; A61B5/1135; A61B2562/00; A61B2562/02; A61B2562/0233; A61B2562/0238; A61B2562/22; A61B2562/225; A61B2562/228; A61B5/68; A61B5/6801; A61B5/6813; A61B5/6823; A61B5/683; A61B5/6831
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
167 words
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.
Claim 2
Dependent Claim
167 words
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.
Claim 3
Dependent Claim
27 words
An optical movement sensor as claimed in claim 1, characterized in that the receiving and transmitting light guides are arranged on opposite sides of the sensor element.
Claim 4
Dependent Claim
72 words
An optical movement sensor as claimed in claim 1, characterized in that: the receiving and transmitting light guides are arranged on the same side of the sensor element; and the sensor further comprises a mirror arranged in the first part of the buckle to receive light which passes through the sensor element from the transmitting light guide, and to reflect said light back through the sensor element to the receiving light guide.
Claim 5
Dependent Claim
54 words
An optical movement sensor as claimed in claim 3, characterized in that: the sensor further comprises a plug, said plug containing the transmitting and receiving light guides and a polarization foil arranged in front of the ends of the light guides; and the first part of the buckle contains a socket for the plug.
Claim 6
Dependent Claim
184 words
An optical movement sensor for detecting deformation of a human body during nuclear spin tomography, 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 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.
Claim 7
Dependent Claim
184 words
An optical movement sensor for detecting deformation of a human body during nuclear spin tomography, 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 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.
Claim 8
Dependent Claim
27 words
An optical movement sensor as claimed in claim 5, characterized in that the receiving and transmitting light guides are arranged on opposite sides of the sensor element.
Claim 9
Dependent Claim
72 words
An optical movement sensor as claimed in claim 5, characterized in that: the receiving and transmitting light guides are arranged on the same side of the sensor element; and the sensor further comprises a mirror arranged in the first part of the buckle to receive light which passes through the sensor element from the transmitting light guide, and to reflect said light back through the sensor element to the receiving light guide.
Claim 10
Dependent Claim
54 words
An optical movement sensor as claimed in claim 7, characterized in that: the sensor further comprises a plug, said plug containing the transmitting and receiving light guides and a polarization foil arranged in front of the ends of the light guides; and the first part of the buckle contains a socket for the plug.
References Cited (Backward Citations)
US3268845A
Cited
US3462223A
Cited
US3517999A
Cited
US3782368A
Cited
US4010632A
Cited
US4342907A
Cited
FR2456314A1
Cited
US4559953A
Cited
US4451730A
Cited
US4420251A
Cited
SU929058A1
Cited
US4321831A
Cited
WO1984004439A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-11 | 1990-11-10 | 1991-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-11 | 1994-11-10 | 1995-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-11 | 1998-11-10 | 1999-05-12 | $7700.00 | Window Closed / Lapsed |