Patent US5638164A successfully refreshed from Google Patents.
US5638164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for laser imaging
Assignee: RAFAEL Ltd
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Filing: 1995-08-09
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Granted: 1997-06-10
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Expires: 2015-08-09
Abstract
Abstract This invention discloses a laser imager for imaging a scene having targets comprising a laser scanner operative to scan the scene at a given spacing with a laser beam, a receiver which receives laser light reflected from the scene and determines the range and reflectance of an object reflecting said laser light at various scan positions and control logic which changes the given spacing in response to the determined range.
Inventors
- 👤 Uzi Landau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:01
CPC Classifications
G; G01; G01S; G01S17/00; G01S17/88; G01S17/89; G01S17/02; G01S17/06; G01S17/42; G01S7/00; G01S7/48; G01S7/4802; G01S7/481; G01S7/4814; G01S7/51
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
65 words
A laser imager for imaging a scene having targets comprising: a laser scanner operative to scan the scene at a given spacing with a laser beam; a receiver which receives laser light reflected from the scene and determines the range of an object reflecting said laser light at various scan positions; and control logic which changes the given spacing in response to the determined range.
Claim 2
Dependent Claim
65 words
A laser imager for imaging a scene having targets comprising: a laser scanner operative to scan the scene at a given spacing with a laser beam; a receiver which receives laser light reflected from the scene and determines the range of an object reflecting said laser light at various scan positions; and control logic which changes the given spacing in response to the determined range.
Claim 3
Dependent Claim
65 words
A laser imager for imaging a scene having targets comprising: a laser scanner operative to scan the scene at a given spacing with the laser beam; a receiver which receives laser light reflected from the scene and determines the reflectance of an object reflecting said laser light at various scan positions; and control logic which changes the given spacing in response to the determined reflectance.
Claim 4
Dependent Claim
65 words
A laser imager for imaging a scene having targets comprising: a laser scanner operative to scan the scene at a given spacing with the laser beam; a receiver which receives laser light reflected from the scene and determines the reflectance of an object reflecting said laser light at various scan positions; and control logic which changes the given spacing in response to the determined reflectance.
Claim 5
Dependent Claim
44 words
A laser imager according to claim 2 wherein the receiver is also operative to determine the range of an object reflecting said laser light at a scan position, and wherein the control logic is also responsive to the determined variations in range and reflectance.
Claim 6
Dependent Claim
44 words
A laser imager according to claim 1 wherein the control logic also changes the resolution of said scan in response to the results of a comparison between an array of values at scan positions and a pre-set array of values representing a target signature.
Claim 7
Dependent Claim
44 words
A laser imager according to claim 2 wherein the control logic also changes the resolution of said scan in response to the results of a comparison between an array of values at scan positions and a pre-set array of values representing a target signature.
Claim 8
Dependent Claim
16 words
A laser imager according to claim 1 wherein the values at scan positions represent target range.
Claim 9
Dependent Claim
17 words
A laser imager according to claim 2 wherein the values at scan positions includes target reflectance values.
Claim 10
Dependent Claim
16 words
A laser imager according to claim 1 wherein the laser source is a GaAs type laser.
Claim 11
Dependent Claim
16 words
A laser imager according to claim 2 wherein the laser source is a GaAs type laser.
Claim 12
Dependent Claim
16 words
A laser imager according to claim 1 wherein the laser source is a NdYaG type laser.
Claim 13
Dependent Claim
16 words
A laser imager according to claim 2 wherein the laser source is a NdYaG type laser.
Claim 14
Dependent Claim
16 words
A laser imager according to claim 1 wherein the laser source is a NdYLF type laser.
Claim 15
Dependent Claim
16 words
A laser imager according to claim 2 wherein the laser source is a NdYLF type laser.
Claim 16
Dependent Claim
72 words
A laser imaging system for imaging a scene including targets, the system comprising: a laser scanner operative to scan the scene at a given resolution with a laser beam; a laser receiver which receives and analyzes laser light reflected from the scene to determine candidate target locations; and a laser scanner controller operative to increase the resolution of the scan and to pinpoint the scan to at least one candidate target location.
Claim 17
Dependent Claim
72 words
A laser imaging system for imaging a scene including targets, the system comprising: a laser scanner operative to scan the scene at a given resolution with a laser beam; a laser receiver which receives and analyzes laser light reflected from the scene to determine candidate target locations; and a laser scanner controller operative to increase the resolution of the scan and to pinpoint the scan to at least one candidate target location.
Claim 18
Dependent Claim
37 words
A system according to claim 14 and also comprising a target size memory storing target size information wherein the laser receiver determines candidate target locations by comparing the size of identified objects with the target size information.
Claim 19
Dependent Claim
37 words
A system according to claim 10 and also comprising a target shape memory storing target shape information wherein the laser receiver determines candidate target locations by comparing the shape of identified objects with the target shape information.
Claim 20
Dependent Claim
87 words
A laser imaging method for imaging a scene including targets, the method comprising: scanning at least a portion of the scene at a first resolution with a laser beam and analyzing the light reflected back, only until a region of interest satisfying at least one general target-characterizing criterion is found; and scanning at least a portion of said region of interest at a second resolution higher than said first resolution with said laser beam, only until a location satisfying at least one specific target-characterizing criterion is found.
Claim 21
Dependent Claim
87 words
A laser imaging method for imaging a scene including targets, the method comprising: scanning at least a portion of the scene at a first resolution with a laser beam and analyzing the light reflected back, only until a region of interest satisfying at least one general target-characterizing criterion is found; and scanning at least a portion of said region of interest at a second resolution higher than said first resolution with said laser beam, only until a location satisfying at least one specific target-characterizing criterion is found.
Claim 22
Dependent Claim
42 words
A method according to claim 14 and also comprising scanning at least a portion of said specific criterion satisfying location at a third resolution higher than said second resolution with said laser beam, only until a highly characteristic target feature is found.
Claim 23
Dependent Claim
37 words
A system according to claim 10 and also comprising a target color memory storing target color information wherein the laser receiver determines candidate target locations by comparing the color of identified objects with the target color information.
Claim 24
Independent Claim
53 words
A method for 3D imaging of at least a portion of a scene, the method comprising: generating a 3D representation of a first portion of the scene at a first resolution; and upon receipt of a control signal, generating a 3D representation of a second portion of the scene at a second resolution.
Claim 25
Independent Claim
53 words
A method for 3D imaging of at least a portion of a scene, the method comprising: generating a 3D representation of a first portion of the scene at a first resolution; and upon receipt of a control signal, generating a 3D representation of a second portion of the scene at a second resolution.
Claim 26
Dependent Claim
20 words
A method according to claim 20 wherein said control signal comprises an indication that a putative target has been encountered.
Claim 27
Dependent Claim
16 words
A method according to claim 20 wherein said second resolution is greater than said first resolution.
Claim 28
Dependent Claim
27 words
A method according to claim 20 and also comprising the step of generating a 3D representation of a third portion of the scene at a third resolution.
Claim 29
Dependent Claim
16 words
A method according to claim 20 wherein generating comprises laser scanning a portion of the scene.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-06-09 | 2000-12-09 | 2001-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-06-09 | 2004-12-09 | 2005-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-06-09 | 2008-12-09 | 2009-06-10 | $7700.00 | Window Closed / Lapsed |