JP2020510208A - 眼安全性走査lidarシステム - Google Patents
眼安全性走査lidarシステム Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
- G01S7/4814—Constructional features, e.g. arrangements of optical elements of transmitters alone
- G01S7/4815—Constructional features, e.g. arrangements of optical elements of transmitters alone using multiple transmitters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/42—Simultaneous measurement of distance and other co-ordinates
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/93—Lidar systems specially adapted for specific applications for anti-collision purposes
- G01S17/931—Lidar systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/4804—Auxiliary means for detecting or identifying lidar signals or the like, e.g. laser illuminators
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
- G01S7/4811—Constructional features, e.g. arrangements of optical elements common to transmitter and receiver
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
- G01S7/4818—Constructional features, e.g. arrangements of optical elements using optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/483—Details of pulse systems
- G01S7/484—Transmitters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/497—Means for monitoring or calibrating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
- H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
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- Optics & Photonics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Optical Radar Systems And Details Thereof (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
本願は、2017年3月13日に出願され“Eye−Safe Scanning LIDAR System”と題された米国仮特許出願第62/470,827号の通常出願である。米国仮特許出願第62/470,827号の全体の内容は、参照により本明細書中に援用される。
本出願人の教示は、多様な実施形態に関連して説明されるが、本出願人の教示がそのような実施形態に限定されることを意図するものではない。そうではなく、本出願人の教示は、多様な代替、変形および均等物に及び、当業者によって理解されるように、本教示の精神および範囲から逸脱することなくその中に作成されることが可能である。
Claims (35)
- LIDAR照明器であって、
a)複数のレーザ源であって、前記複数のレーザ源のそれぞれは、前記複数のレーザ源のそれぞれに光学ビームを生成させる変調駆動信号を受信する電気入力を備える、複数のレーザ源と、
b)複数の電気出力を有する、コントローラであって、前記複数の電気出力の個々のものは、前記複数のレーザ源の個々のものの電気入力に接続され、前記コントローラは、前記複数のレーザ源に組み合わせられた光学ビームを形成する複数の光学ビームを生成させる複数の変調駆動信号を生成し、測定距離における測定開口内の前記組み合わせられた光学ビームのピーク光学エネルギーは、所望の値未満である、コントローラと
を備える、LIDAR照明器。 - 前記複数のレーザ源は、複数の垂直キャビティ面発光レーザを備える、請求項1に記載のLIDAR照明器。
- 前記複数のレーザ源は、前記測定距離における前記測定開口内の組み合わせられた光学ビームが前記複数の光学ビームのうちの1つのみを備えるように位置付けられる、請求項1に記載のLIDAR照明器。
- 前記コントローラは、擬似ランダム時間において前記複数のレーザ源を励起するように、前記複数の変調駆動信号を生成するように構成される、請求項3に記載のLIDAR照明器。
- 前記コントローラは、前記複数の光学ビームのいずれも、任意の特定の時間において、前記測定距離における前記測定開口内で重複しないように、前記複数のレーザ源を励起するように、前記複数の変調駆動信号を生成するように構成される、請求項1に記載のLIDAR照明器。
- 前記コントローラは、1つを上回る光学ビームが、前記時間の少なくとも一部において、前記測定距離における前記測定開口を照射するように、前記複数のレーザ源を励起するように、前記複数の変調駆動信号を生成するように構成される、請求項5に記載のLIDAR照明器。
- 前記コントローラは、前記測定距離における前記測定開口内の組み合わせられた光学ビームが、前記複数の光学ビームのうちの1つの前記測定距離における前記測定開口内のピーク光学エネルギー以下であるピーク光学エネルギーを備えるように、前記複数のレーザ源を励起するように、前記複数の変調駆動信号を生成するように構成される、請求項1に記載のLIDAR照明器。
- 前記コントローラは、前記複数の光学ビームの1つのみが、任意の特定の時間において、前記測定距離における前記測定開口を照射するように、前記複数のレーザ源を励起するように、前記複数の変調駆動信号を生成するように構成される、請求項1に記載のLIDAR照明器。
- 前記コントローラは、任意の所与の時間において、前記測定距離における前記測定開口内で時間内に重複する光学ビームが存在しないように、前記複数のレーザ源を励起するように、複数の変調駆動信号を生成するように構成される、請求項1に記載のLIDAR照明器。
- 前記コントローラは、前記複数の光学ビームのうちの少なくとも2つが前記測定距離における前記測定開口内で時間内に同時に重複するように、前記複数のレーザ源を励起するように、複数の変調駆動信号を生成するように構成される、請求項1に記載のLIDAR照明器。
- 前記コントローラは、前記複数の光学ビームのうちの少なくとも2つが前記測定距離における前記測定開口内で時間内に同時に部分的に重複するように、前記複数のレーザ源を励起するように、複数の変調駆動信号を生成するように構成される、請求項1に記載のLIDAR照明器。
- 前記測定開口は、約7mmであり、前記測定距離は、約100mmである、請求項1に記載のLIDAR照明器。
- 前記コントローラは、前記複数のレーザ源が、所望のパルス幅、ピークパワー、および繰り返し率を伴うパルス状光学ビームを生成し、それにより、各ビームが、前記測定距離における前記測定開口内で最大許容可能暴露(MPE)限界を超えないように、複数の変調駆動信号を生成するように構成される、請求項1に記載のLIDAR照明器。
- 前記複数の光学ビームは、クラス1の眼安全性である前記測定距離における前記測定開口内にピーク光学エネルギーを伴う組み合わせられた光学ビームを生成する、請求項1に記載のLIDAR照明器。
- 前記コントローラは、前記LIDAR照明器のリフレッシュレートを最大限にするように、複数の変調駆動信号を生成するように構成される、請求項1に記載のLIDAR照明器。
- 前記コントローラはさらに、前記コントローラに電気的に接続されたメモリを備え、前記メモリは、前記LIDAR照明器に特定の所望のパターンの光を生成させる前記複数の変調駆動信号を表すデータを記憶する、請求項1に記載のLIDAR照明器。
- エネルギー密度を測定する光学センサをさらに備え、前記光学センサは、前記コントローラに電気的に接続された出力を有する、請求項1に記載のLIDAR照明器。
- 前記コントローラは、複数の変調駆動信号が、時間の関数として変化する組み合わせられた光学ビームを形成する複数の光学ビームを生成するように、複数の変調駆動信号を生成するように構成される、請求項1に記載のLIDAR照明器。
- LIDAR照明の方法であって、
a)複数のレーザ源を提供することと、
b)前記複数のレーザ源の各々に対し、前記複数のレーザ源に、組み合わせられた光学ビームを形成する複数の光学ビームを生成させる複数の変調駆動信号を生成することであって、測定距離における測定開口内の前記組み合わせられた光学ビームのピーク光学エネルギーは、所望の値未満である、ことと
を含む、方法。 - 前記複数のレーザ源を提供することは、複数の垂直キャビティ面発光レーザを提供することを含む、請求項19に記載の方法。
- 前記複数のレーザ源の各々に対し、前記複数の変調駆動信号を生成することは、擬似ランダム時間において前記複数のレーザ源を励起するように、前記複数の変調駆動信号を生成することを含む、請求項19に記載の方法。
- 前記複数のレーザ源の各々に対し、前記複数の変調駆動信号を生成することは、前記複数の光学ビームのいずれも、前記測定距離における前記測定開口内で任意の特定の時間において重複しないように、前記複数のレーザ源を励起するように、前記複数の変調駆動信号を生成することを含む、請求項19に記載の方法。
- 前記複数のレーザ源の各々に対し、前記複数の変調駆動信号を生成することは、1つを上回る光学ビームが、前記時間の少なくとも一部において、前記測定距離における前記測定開口を照射するように、前記複数のレーザ源を励起するように、前記複数の変調駆動信号を生成することを含む、請求項19に記載の方法。
- 前記複数のレーザ源の各々に対し、前記複数の変調駆動信号を生成することは、前記測定距離における前記測定開口内の組み合わせられた光学ビームが、前記測定距離における前記測定開口内の前記複数の光学ビームのうちの1つのピーク光学エネルギー以下であるピーク光学エネルギーを備えるように、前記複数のレーザ源を励起するように、前記複数の変調駆動信号を生成することを含む、請求項19に記載の方法。
- 前記複数のレーザ源の各々に対し、前記複数の変調駆動信号を生成することは、前記複数の光学ビームの1つのみが、任意の特定の時間において、前記測定距離における前記測定開口を照射するように、前記複数のレーザ源を励起するように、前記複数の変調駆動信号を生成することを含む、請求項19に記載の方法。
- 前記複数のレーザ源の各々に対し、前記複数の変調駆動信号を生成することは、任意の所与の時間において、前記測定距離における前記測定開口内で時間内に重複する光学ビームが存在しないように、前記複数のレーザ源を励起するように、前記複数の変調駆動信号を生成することを含む、請求項19に記載の方法。
- 前記複数のレーザ源の各々に対し、前記複数の変調駆動信号を生成することは、前記複数の光学ビームのうちの少なくとも2つが前記測定距離における前記測定開口内で時間内に同時に重複するように、前記複数のレーザ源を励起するように、前記複数の変調駆動信号を生成することを含む、請求項19に記載の方法。
- 前記複数のレーザ源の各々に対し、前記複数の変調駆動信号を生成することは、前記複数の光学ビームのうちの少なくとも2つが前記測定距離における前記測定開口内で時間内に同時に部分的に重複するように、前記複数のレーザ源を励起するように、前記複数の変調駆動信号を生成することを含む、請求項19に記載の方法。
- 前記測定開口は、約7mmであり、前記測定距離は、約100mmである、請求項19に記載の方法。
- 前記複数のレーザ源の各々に対し、前記複数の変調駆動信号を生成することは、前記複数のレーザ源が、所望のパルス幅、ピークパワー、および繰り返し率を伴うパルス状光学ビームを生成し、それにより、各ビームが、前記測定距離における前記測定開口内で最大許容可能暴露(MPE)限界を超えないように、前記複数の変調駆動信号を生成することを含む、請求項19に記載の方法。
- 前記複数のレーザ源の各々に対し、前記複数の変調駆動信号を生成することは、クラス1の眼安全性である、前記測定距離における前記測定開口内にピーク光学エネルギーを伴う組み合わせられた光学ビームを生成するように、前記複数の変調駆動信号を生成することを含む、請求項19に記載の方法。
- 前記複数のレーザ源の各々に対し、前記複数の変調駆動信号を生成することは、前記LIDAR照明器のリフレッシュレートを最大限にする複数の変調駆動信号を生成するように、前記複数の変調駆動信号を生成することを含む、請求項19に記載の方法。
- メモリにアクセスし、前記複数の変調駆動信号を取得することをさらに含む、請求項19に記載の方法。
- 前記測定距離における前記測定開口内のエネルギー密度を測定することをさらに含む、請求項19に記載の方法。
- 前記複数のレーザ源の各々に対し、前記複数の変調駆動信号を生成することは、複数の変調駆動信号が、時間の関数として変化する組み合わせられた光学ビームを形成する複数の光学ビームを生成するように、複数の変調駆動信号を生成することを含む、請求項19に記載の方法。
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CN110402398A (zh) | 2019-11-01 |
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US20230213625A1 (en) | 2023-07-06 |
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JP7360196B2 (ja) | 2023-10-12 |
KR102326493B1 (ko) | 2021-11-17 |
US11016178B2 (en) | 2021-05-25 |
KR20210065207A (ko) | 2021-06-03 |
JP2021139918A (ja) | 2021-09-16 |
KR20230061568A (ko) | 2023-05-08 |
US11927694B2 (en) | 2024-03-12 |
WO2018169758A1 (en) | 2018-09-20 |
JP7037830B2 (ja) | 2022-03-17 |
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CN110402398B (zh) | 2023-12-01 |
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