Patent US4893922A successfully refreshed from Google Patents.
US4893922A
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Measurement system and measurement method
Assignee: Precitronic Gesellschaft fuer Feinmechanik und Electronic mbH
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Filing: 1988-12-23
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Granted: 1990-01-16
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Expires: 2008-12-23
Abstract
Abstract In the measurement system for the measurement of an object (2), the object2) is provided with two retro-reflectors (3, 4) disposed at a known spacing. A measuring device (1) exhibits a light source (5), a video camera (7, 8) and an arrangement (9) which carries out the measurement with reference to the two image points which are formed by the light reflected by the retroreflectors (3, 4). The light source (5) is preferably a flash light source, the flashes of which are synchronized by an arrangement (6) with the imaging sequence of the video camera (7, 8).
Inventors
- 👤 Kurt Eichweber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:37
CPC Classifications
G; G01; G01S; G01S17/00; G01S17/86; G01C; G01C15/00; G01S17/02; G01S17/06; G01S17/42; G01S17/46; G01S7/00; G01S7/48; G01S7/481; G01S7/4811
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
143 words
A system for the measurement of a target object, comprising: first and second retroreflectors carried by the object with a known spacing therebetween, each retroreflector adapted to return substantially all of any light impinging thereon from a light source; a measuring device including a light including a light source for projecting a single light beam onto both of the retroreflectors from a source location, a matrix CCD video camera at the source location oriented to receive first and second reflected source light beams from the first and second retroreflectors and to generate respective first and second image points, means for analyzing the distance relationship of the first and second image points in the camera to determine the measurement attributes of at least location of the object relative to the source location, and means for transmitting information from the measuring device to the object.
Claim 2
Independent Claim
143 words
A system for the measurement of a target object, comprising: first and second retroreflectors carried by the object with a known spacing therebetween, each retroreflector adapted to return substantially all of any light impinging thereon from a light source; a measuring device including a light including a light source for projecting a single light beam onto both of the retroreflectors from a source location, a matrix CCD video camera at the source location oriented to receive first and second reflected source light beams from the first and second retroreflectors and to generate respective first and second image points, means for analyzing the distance relationship of the first and second image points in the camera to determine the measurement attributes of at least location of the object relative to the source location, and means for transmitting information from the measuring device to the object.
Claim 3
Dependent Claim
19 words
The Measurement system according to claim 1, characterized in that the light source (5) is a white light source.
Claim 4
Dependent Claim
19 words
The Measurement system according to claim 1, characterized in that the light source (5) is an infrared light source.
Claim 5
Dependent Claim
16 words
Measurement system according to claim 1, characterized in that the light source (5) emits light flashes.
Claim 6
Dependent Claim
32 words
The measurement system according to claim 4, characterized in that the video camera has a scanning frequency and the light flashes are synchronized with the scanning frequency of the video camera (7,8).
Claim 7
Dependent Claim
30 words
The measurement system according to claim 1, characterized in that the means for analyzing includes means for the determination of the relative velocity of the object and the measuring device.
Claim 8
Dependent Claim
43 words
The measurement system according to claim 1, characterized in that the system includes means for adjusting the measuring device to maintain the light beam projected on the object and that the transmission of information is effected by another, narrowly concentrated beam of radiation.
Claim 9
Dependent Claim
21 words
The measurement system according to claim 1, characterized in that the transmission of the information takes place by means of light.
Claim 10
Dependent Claim
56 words
The measurement system according to claim 1, characterized in that the video camera (7,8) includes an objective lens (8) of variable focal length and the means for analyzing include means for the analysis of a plurality of recordings made with varying image angles for the determination of the distance between the object and the measuring device.
Claim 11
Dependent Claim
20 words
The measurement system according to claim 1, characterized in that the system includes means for displaying the determined measurement attribute.
Claim 12
Dependent Claim
25 words
The measurement system according to claim 10, characterized in that the system further includes an intermediate data storage means (10) for the determined measurement attribute.
Claim 13
Dependent Claim
70 words
The measurement system according to claim 1, characterized in that the system includes means for the illumination of a section (17) of the immediate environment of the measuring device, means (18) for the imaging of this section 17 by the camera (7,8) and means (9) for the determination of the specific movement of the measuring device (1) on the basis of changes of the image (17a) of the section (17).
Claim 14
Dependent Claim
36 words
The measurement system according to claim 1, wherein the means of analyzing is responsive to the focal length of the video camera, the instantaneous orientation of the video camera, and the known spacing of the retroreflectors.
Claim 15
Independent Claim
139 words
A system for the measurement of a target object, comprising: first and second retroreflectors carried by the object with a known spacing therebetween, each retroreflector adapted to return substantially all of any light impinging thereon from a light source; a measuring device including a light including a light source for projecting a single light beam onto both of the retroreflectors from a source location, a matrix CCD video camera at the source location oriented to receive first and second reflected source light beams from the first and second retroreflectors and to generate respective first and second image points, means for analyzing the distance relationship of the first and second image points in the camera to determine the measurement attributes of at least location of the object relative to the source location, and means for displaying the determined measurement attribute.
Claim 16
Independent Claim
139 words
A system for the measurement of a target object, comprising: first and second retroreflectors carried by the object with a known spacing therebetween, each retroreflector adapted to return substantially all of any light impinging thereon from a light source; a measuring device including a light including a light source for projecting a single light beam onto both of the retroreflectors from a source location, a matrix CCD video camera at the source location oriented to receive first and second reflected source light beams from the first and second retroreflectors and to generate respective first and second image points, means for analyzing the distance relationship of the first and second image points in the camera to determine the measurement attributes of at least location of the object relative to the source location, and means for displaying the determined measurement attribute.
Claim 17
Dependent Claim
25 words
The measurement system according to claim 14, characterized in that the system further includes an intermediate data storage means (10) for the determined measurement attribute.
References Cited (Backward Citations)
US3653769A
Cited
US3773422A
Cited
US3796492A
Cited
US3917196A
Cited
US4003659A
Cited
US4053233A
Cited
US4047816A
Cited
US4136950A
Cited
US4297725A
Cited
US4373804A
Cited
US4355895A
Cited
US4373808A
Cited
US4391514A
Cited
US4396945A
Cited
US4652917A
Cited
US4684247A
Cited
US4760269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-15 | 1993-07-17 | 1994-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-15 | 1997-07-17 | 1998-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-15 | 2001-07-17 | 2002-01-16 | $7700.00 | Window Closed / Lapsed |