JP2023524908A - Lidarビームワークオフ補正 - Google Patents
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- Optics & Photonics (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
Description
本出願は、2020年6月12日付で出願された米国仮出願第63/038,450号に対する優先権を主張する2021年6月9日付で出願された米国仮出願第17/343,511号に対する優先権を主張する。該当出願第17/343,511号及び第63/038,450号は本願に参照として含まれる。
技術分野
Claims (15)
- 光検出と測距(LIDAR)システムであって、
第1偏光配向を有する光を放出するように構成されるピクセルと、
表面に前記光を反射するように構成されるミラーと、
前記ピクセルと前記ミラーとの間には位置される複屈折性材料と、を含むが、前記複屈折性材料は前記第1偏光配向を有し、前記複屈折性材料を介して伝播される光の位置におけるオフセットを誘発するが、前記複屈折性材料は第2偏光配向を有する反射されたビームをシフトさせるLIDARシステム。 - 複屈折性材料は空間における反射されたビームをピクセル上で水平方向の反対方向にシフトさせ、第2偏光配向は第1偏光配向に直交するが、第1偏光配向を有する光の位置のオフセットは、第2偏光配向を有する反射されたビームの水平シフトとは異なる請求項1に記載のLIDARシステム。
- 複屈折性材料は複屈折性材料上に入射される光に対して角をなすが、複屈折性材料は複屈折性材料上に入射される反射されたビームに対してティルティングされる請求項1に記載のLIDARシステム。
- ミラーは回転ミラーとして構成される請求項1に記載のLIDARシステム。
- ピクセルは、
第1偏光配向を有する光を放出し、
第2偏光配向を有する反射されたビームを前記ピクセル内にカップリングさせるように構成される二重偏光カプラを含む請求項1に記載のLIDARシステム。 - ピクセルは、
第1偏光配向を有する光を放出するように構成される送信格子カプラと、
第2偏光配向を有する反射されたビームを前記ピクセル内に受信するように前記送信格子カプラに垂直に配向される単一偏光格子カプラと、を含む請求項1に記載のLIDARシステム。 - ピクセルは、
前記ピクセルによって前記光として放出される分割された光の第1百分率と、分割された光の第2第百分率とを提供するように構成されるスプリッタと、
前記分割された光の第2百分率を前記反射されたビームと混合して出力を生成するように構成される光学ミキサーと、を含む請求項1に記載のLIDARシステム。 - 複屈折性材料とミラーとの間に配置されるレンズであって、前記レンズはピクセルによって放出された光をコリメートするように構成されるレンズを更に含む請求項1に記載のLIDARシステム。
- 複屈折性材料は、LiNO3(硝酸リチウム)またはYVO4(オルトバナジウム塩イットリウム)のうち少なくとも一つを含む請求項1に記載のLIDARシステム。
- 複屈折性材料のティルティング角度及び複屈折性材料の厚さは50メートル以上の検出距離でオブジェクトを検出するために構成される請求項1に記載のLIDARシステム。
- 自律走行車両のための自律走行車両制御システムであって、前記自律走行車両制御システムは請求項1乃至請求項10のうちいずれか一項によるLIDARシステムを含む自律走行車両制御システム。
- 自律走行車両のための自律走行車両制御システムであって、前記自律走行車両制御システムは、
第1偏光配向を有する光を放出するように構成されピクセルであって、前記ピクセルは前記自律走行車両の環境のターゲットから反射される光の反射されたビームを受信するように構成される光学ミキサーを含むピクセルと、
前記ターゲットに対する光を反射させるように構成されるミラーと、
複屈折性材料であって、前記第1偏光配向を有し、前記複屈折性材料を介して伝播される光の位置のオフセットを導入するが、前記複屈折性材料は空間における前記反射されたビームを前記ピクセル上で反対方向の水平にシフトさせ、前記反射されたビームは前記第1偏光配向に直交する第2偏光配向を有する複屈折性材料と、
前記ピクセルの光学ミキサーの出力に応答して前記自律走行車両を制御するように構成される一つ以上のプロセッサと、を含む自律走行車両制御システム。 - 複屈折性材料のティルティング角度及び複屈折性材料の厚さは50メートル以上の検出距離でターゲットを検出するために構成される請求項12に記載の自律走行車両制御システム。
- 自律走行車両であって、
第1偏光配向を有する赤外線光を放出するように構成され、前記自律走行車両の環境のオブジェクトから反射される反射された赤外線光を受信するように構成されるピクセルと、
複屈折性材料であって、前記複屈折性材料を介して伝播される赤外線光の位置のオフセットを導入するが、前記複屈折性材料は空間における前記反射された赤外線ビームを前記ピクセル上で反対方向の水平にシフトさせ、前記反射された赤外線ビームは前記第1偏光配向に直交する第2偏光配向を有する複屈折性材料と、
前記反射された赤外線ビームに応答して前記自律走行車両を制御するように構成される制御システムと、を含む自律走行車両。 - 回転ミラーであって、前記回転ミラーが第1位置にある間に前記赤外線光を前記ターゲットに向けるように構成されるが、前記回転ミラーは、前記回転ミラーが第1位置とは異なる第2位置にある際に前記反射された赤外線ビームを前記ピクセルに更に向けるように構成される回転ミラーを含む請求項14に記載の自律走行車両。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US202063038450P | 2020-06-12 | 2020-06-12 | |
US63/038,450 | 2020-06-12 | ||
US17/343,511 US11454724B2 (en) | 2020-06-12 | 2021-06-09 | Lidar beam walk-off correction |
US17/343,511 | 2021-06-09 | ||
PCT/US2021/037007 WO2021252894A1 (en) | 2020-06-12 | 2021-06-11 | Lidar beam walk-off correction |
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JP7303949B2 JP7303949B2 (ja) | 2023-07-05 |
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EP (1) | EP4165433A1 (ja) |
JP (1) | JP7303949B2 (ja) |
KR (1) | KR102596726B1 (ja) |
CN (1) | CN115667982B (ja) |
AU (1) | AU2021288211B2 (ja) |
CA (1) | CA3180289C (ja) |
WO (1) | WO2021252894A1 (ja) |
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US11789149B2 (en) * | 2020-10-04 | 2023-10-17 | Silc Technologies, Inc. | Polarization separation in remote imaging systems |
US11592540B1 (en) * | 2022-06-23 | 2023-02-28 | Ours Technology, Llc | LIDAR sensor system including a dual-polarization transmit and receive optical antenna |
Citations (6)
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