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EP0465806A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Charge integration range detector

Assignee: Ball Corp
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Filing: 1991-05-24
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Granted: —
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Expires: 2011-05-24
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Abstract

Abstract A system and a method for obtaining object data with a direct detection technique which employs radiation are disclosed. A set of radiation pulses are transmitted to an object area. A mechanical scan of the object area for returning pulses reflected off an object can be carried out for each pulse, so that each pulse is reflected onto a particular position of a light-sensitive array dependent upon the object distance and/or other data pertaining to the object. Alternatively, the scanning relative to each returning reflected pulse can be conducted by electrically scanning a radiation-sensitive array which comprises a CCD array having pixels. The scanning takes place relative to each pulse so that each returning reflected pulse strikes one or more pixels on the array so that the resulting signal reside at a position depending upon certain object data. The relationship between the generation of the pulses and the scanning can be changed as desired in order to seek objects at different ranges from the system or to improve accuracy of the object data.

Inventors

  • 👤 Jerome Chester Kollodge

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-04 00:37
CPC Classifications
G; G01; G01S; G01S17/00; G01S17/88; G01S17/89; G01S17/02; G01S17/50

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 84 words
A method for obtaining object data comprising the steps of: (a) transmitting a radiation pulse to an object area; (b) scanning relative to the radiation pulse radiation received from the object area across radiation-sensitive means so that radiation from the radiation pulse reflected from an object in the object area strikes a position on the radiation-sensitive means dependent upon distance to the object; and (c) determining the distance to the object based on the position on the radiation-sensitive means which receives the reflected radiation.
Claim 2
Dependent Claim 60 words
A method for obtaining object data according to Claim 1 , wherein the said step (a) and said step (b) are initiated by a common signal, said method further comprising the step of: (d) delaying the common signal prior to supplying the common signal for initiating said step (b) such that a desired distance range is scanned for an object.
Claim 3
Dependent Claim 37 words
A method for obtaining object data according to Claim 2, wherein said step (b) further comprises controlling scanning speed dependent upon the difference between a maximum distance and a minimum distance in the distance range being scanned.
Claim 4
Dependent Claim 38 words
A method for obtaining object data according to Claim 1 , wherein the radiation pulse is a laser pulse generated by a laser and the radiation-sensitive means comprises a one-dimensional CCD array having a predetermined number of pixels.
Claim 5
Dependent Claim 49 words
A method for obtaining object data according to Claim 4, further comprising, prior to said step (c), the step of: (e) storing radiation received during said step (b) in the pixel the radiation strikes; and (f) repeating said steps (a), (b) and (e) for a predetermined number of pulses.
Claim 6
Independent Claim 96 words
A system for obtaining object data comprising: (a) first means for transmitting a series of at least one radiation pulse to an object area based on a command signal; (b) second means for receiving returning radiation from the set of radiation pulses reflected off an object in the object area and selectively redirecting the returning radiation from each pulse dependent on the command signal and object characteristics; and (c) at least two radiation detectors arranged to receive the redirected returning radiation from said second means, each of said radiation detectors being representative of different object data.
Claim 7
Dependent Claim 27 words
A system for obtaining object data according to Claim 6, wherein object data is determined based on which of said radiation detectors receives the redirected returning radiation.
Claim 8
Dependent Claim 47 words
A system for obtaining object data according to Claim 6 , wherein the radiation pulses are laser pulses and said first means includes a laser and a laser controller connected to the laser for controlling the laser to transmit the laser pulses based upon the command signal.
Claim 9
Dependent Claim 65 words
A system for obtaining object data according to Claim 8, wherein said second means includes a scanning mirror and scanning mirror control means for controlling the scanning of the scanning mirror relative to each laser pulse based on the command signal so that returning radiation from each pulse is redirected to strike at least one of said radiation detectors dependent upon distance to the object.
Claim 10
Dependent Claim 37 words
A system for obtaining object data according to Claim 9, wherein said radiation detectors comprise pixels in one-dimensional CCD array, each of said pixels being representative of a different distance to an object in the object area.

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