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US6512993B2 Expired / Lapsed US ⏱️ 0.0 years remaining

Integrated system for quickly and accurately imaging and modeling three-dimensional objects

Assignee: Leica Geosystems AG
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Filing: 2001-10-17
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Granted: 2003-01-28
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Expires: 2021-10-17
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Abstract

Abstract An integrated system generates a model of a three-dimensional object. A scanning laser device scans the three-dimensional object and generates a point cloud. The points of the point cloud each indicate a location of a corresponding point on a surface of the object. A first model is generated, responsive to the point cloud, that generates a first model representing constituent geometric shapes of the object. A data file is generated, responsive to the first model, that can be inputted to a computer-aided design system.

Inventors

  • 👤 Ben K. Kacyra
  • 👤 Jerry Dimsdale

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 13:46
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/002; G01B11/24; G01C; G01C11/00; G01C15/00; G01C15/002; G01S; G01S17/00; G01S17/88; G01S17/89; G01S7/00; G01S7/48; G01S7/481; G01S7/4817; G01S7/4818

Claims Analysis

Total Claims: 24
Claim 1
Independent Claim 129 words
An apparatus for obtaining position information about surface points of a three dimensional object comprising: a diode pumped, frequency doubled solid state laser for generating a pulsed laser beam, with each pulse having an energy less than 0.2 μJ and wherein the laser beam has an average power of not greater than 1 milliwatt; a scanning mirror system for scanning the laser pulses over the object; and monitoring means for automatically measuring the range to the object based on the time of flight of the laser pulses, said time measurement having a resolution of 20 psec or less, said monitoring means also measuring the angular position of the laser beam and with the range and angular position information being suitable for generating a three dimensional representation of the object.
Claim 2
Independent Claim 129 words
An apparatus for obtaining position information about surface points of a three dimensional object comprising: a diode pumped, frequency doubled solid state laser for generating a pulsed laser beam, with each pulse having an energy less than 0.2 μJ and wherein the laser beam has an average power of not greater than 1 milliwatt; a scanning mirror system for scanning the laser pulses over the object; and monitoring means for automatically measuring the range to the object based on the time of flight of the laser pulses, said time measurement having a resolution of 20 psec or less, said monitoring means also measuring the angular position of the laser beam and with the range and angular position information being suitable for generating a three dimensional representation of the object.
Claim 3
Dependent Claim 18 words
An apparatus as recited in claim 1 wherein the laser pulses have a duration less than 1 nanosecond.
Claim 4
Independent Claim 163 words
An apparatus for obtaining position information about surface points of a three dimensional object comprising: a diode pumped, frequency doubled solid state laser for generating a pulsed laser beam, with each pulse having an energy less than 0.2 μJ and wherein the laser beam has an average power of not greater than 1 milliwatt; a scanning mirror system for scanning the laser pulses over the object; and monitoring means for automatically measuring the range to the object based on the time of flight of the laser pulses, said time measurement having a resolution of 30 psec or less, said monitoring means also measuring the angular position of the laser beam and with the range and angular position information being suitable for generating a three dimensional representation of the object and-wherein said monitoring means has a positional accuracy for each point in three dimensional space equal to or better than six millimeters at one standard deviation over a range of up to 100 meters.
Claim 5
Independent Claim 163 words
An apparatus for obtaining position information about surface points of a three dimensional object comprising: a diode pumped, frequency doubled solid state laser for generating a pulsed laser beam, with each pulse having an energy less than 0.2 μJ and wherein the laser beam has an average power of not greater than 1 milliwatt; a scanning mirror system for scanning the laser pulses over the object; and monitoring means for automatically measuring the range to the object based on the time of flight of the laser pulses, said time measurement having a resolution of 30 psec or less, said monitoring means also measuring the angular position of the laser beam and with the range and angular position information being suitable for generating a three dimensional representation of the object and-wherein said monitoring means has a positional accuracy for each point in three dimensional space equal to or better than six millimeters at one standard deviation over a range of up to 100 meters.
Claim 6
Dependent Claim 22 words
An apparatus as recited in claim 1 wherein the wavelength of the laser beam is in the visible region of the spectrum.
Claim 7
Dependent Claim 18 words
An apparatus as recited in claim 1 wherein the wavelength of the laser beam is about 532 nm.
Claim 8
Independent Claim 149 words
An apparatus for obtaining position information about surface points of a three dimensional object comprising: a diode pumped, frequency doubled solid state laser for generating a pulsed laser beam, with each pulse having an energy less than 0.2 μJ and wherein the laser beam has an average power of not greater than 1 milliwatt; a scanning mirror system for scanning the laser pulses over the object; and monitoring means for automatically measuring the range to the object based on the time of flight of the laser pulses, said time measurement having a resolution of 30 psec or less, said monitoring means also measuring the angular position of the laser beam and with the range and angular position information being suitable for generating a three dimensional representation of the object and where the object is provided with retro reflectors and wherein the range of operation is up to one mile.
Claim 9
Independent Claim 149 words
An apparatus for obtaining position information about surface points of a three dimensional object comprising: a diode pumped, frequency doubled solid state laser for generating a pulsed laser beam, with each pulse having an energy less than 0.2 μJ and wherein the laser beam has an average power of not greater than 1 milliwatt; a scanning mirror system for scanning the laser pulses over the object; and monitoring means for automatically measuring the range to the object based on the time of flight of the laser pulses, said time measurement having a resolution of 30 psec or less, said monitoring means also measuring the angular position of the laser beam and with the range and angular position information being suitable for generating a three dimensional representation of the object and where the object is provided with retro reflectors and wherein the range of operation is up to one mile.
Claim 10
Independent Claim 172 words
An apparatus for obtaining position information about surface points of a three dimensional object comprising: a diode pumped, frequency doubled solid state laser for generating a pulsed laser beam, with each pulse having an energy less than 0.2 μJ and wherein the laser beam has an average power of not greater than 1 milliwatt; a scanning mirror system for scanning the laser pulses over the object; and monitoring means for automatically measuring the range to the object based on the time of flight of the laser pulses, said time measurement having a resolution of 30 psec or less, said monitoring means also measuring the angular position of the laser beam and with the range and angular position information being suitable for generating a three dimensional representation of the object, said apparatus further including a processor for generating a point cloud based upon the range and angular position information, the point cloud comprising a plurality of data points that each represents a location of a corresponding point on the surface of the object.
Claim 11
Independent Claim 172 words
An apparatus for obtaining position information about surface points of a three dimensional object comprising: a diode pumped, frequency doubled solid state laser for generating a pulsed laser beam, with each pulse having an energy less than 0.2 μJ and wherein the laser beam has an average power of not greater than 1 milliwatt; a scanning mirror system for scanning the laser pulses over the object; and monitoring means for automatically measuring the range to the object based on the time of flight of the laser pulses, said time measurement having a resolution of 30 psec or less, said monitoring means also measuring the angular position of the laser beam and with the range and angular position information being suitable for generating a three dimensional representation of the object, said apparatus further including a processor for generating a point cloud based upon the range and angular position information, the point cloud comprising a plurality of data points that each represents a location of a corresponding point on the surface of the object.
Claim 12
Independent Claim 155 words
An apparatus for obtaining position information about surface points of a three dimensional object comprising: a diode pumped, frequency doubled solid state laser for generating a pulsed laser beam, with each pulse having an energy less than 0.2 μJ and wherein the laser beam has an average power of not greater than 1 milliwatt; a scanning mirror system for scanning the laser pulses over the object; and monitoring means for automatically measuring the range to the object based on the time of flight of the laser pulses, said time measurement having a resolution of 30 psec or less, said monitoring means also measuring the angular position of the laser beam and with the range and angular position information being suitable for generating a three dimensional representation of the object, said apparatus further including a processor means for rendering a model of the object which includes the range and position information generated by the modeling means.
Claim 13
Independent Claim 155 words
An apparatus for obtaining position information about surface points of a three dimensional object comprising: a diode pumped, frequency doubled solid state laser for generating a pulsed laser beam, with each pulse having an energy less than 0.2 μJ and wherein the laser beam has an average power of not greater than 1 milliwatt; a scanning mirror system for scanning the laser pulses over the object; and monitoring means for automatically measuring the range to the object based on the time of flight of the laser pulses, said time measurement having a resolution of 30 psec or less, said monitoring means also measuring the angular position of the laser beam and with the range and angular position information being suitable for generating a three dimensional representation of the object, said apparatus further including a processor means for rendering a model of the object which includes the range and position information generated by the modeling means.
Claim 14
Independent Claim 107 words
An apparatus for obtaining position information about surface points of a three dimensional object comprising: a laser for generating a pulsed laser beam; means for scanning the laser pulses over the object; and monitoring means for automatically measuring the range to the object based on the time of flight of pulses, said time measurement having a resolution of 30 psec or less, said monitoring means also measuring the angular position of the laser beam, said monitoring means having a positional accuracy for each point in three dimensional space equal to or better than six millimeters at one standard deviation over a range of up to 100 meters.
Claim 15
Independent Claim 107 words
An apparatus for obtaining position information about surface points of a three dimensional object comprising: a laser for generating a pulsed laser beam; means for scanning the laser pulses over the object; and monitoring means for automatically measuring the range to the object based on the time of flight of pulses, said time measurement having a resolution of 30 psec or less, said monitoring means also measuring the angular position of the laser beam, said monitoring means having a positional accuracy for each point in three dimensional space equal to or better than six millimeters at one standard deviation over a range of up to 100 meters.
Claim 16
Dependent Claim 32 words
An apparatus as recited in claim 9 wherein each output pulse has an energy less than 0.2μJ and wherein the average power of the laser beam is not greater than 1 milliwatt.
Claim 17
Dependent Claim 18 words
An apparatus as recited in claim 9 wherein the laser pulses have a duration less than 1 nanosecond.
Claim 18
Dependent Claim 41 words
An apparatus as recited in claim 9 wherein said monitoring means has a positional accuracy for each point in three dimensional space equal to or better than six millimeters at one standard deviation over a range of up to 100 meters.
Claim 19
Dependent Claim 18 words
An apparatus as recited in claim 9 wherein each range measurement can be made in under 0.005 seconds.
Claim 20
Dependent Claim 22 words
An apparatus as recited in claim 9 wherein the wavelength of the laser beam is in the visible region of the spectrum.
Claim 21
Dependent Claim 18 words
An apparatus as recited in claim 9 wherein the wavelength of the laser beam is about 532 nm.
Claim 22
Dependent Claim 26 words
An apparatus as recited in claim 9 where the object is provided with retro reflectors and wherein the range of operation is up to one mile.
Claim 23
Dependent Claim 48 words
An apparatus as recited in claim 9 further including a processor for generating a point cloud based upon the range and angular position information, the point cloud comprising a plurality of data points that each represents a location of a corresponding point on the surface of the object.
Claim 24
Dependent Claim 31 words
An apparatus as recited in claim 9 further including a processor means for rendering a model of the object which includes the range and position information generated by the modeling means.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2006-01-27 2006-07-29 2007-01-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2010-01-27 2010-07-29 2011-01-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2014-01-27 2014-07-29 2015-01-28 $7700.00 Window Closed / Lapsed

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