JP2020167409A - 多波長光を利用した光学装置 - Google Patents
多波長光を利用した光学装置 Download PDFInfo
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- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
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- H01L33/26—Materials of the light emitting region
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- H01S5/00—Semiconductor lasers
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- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/026—Monolithically integrated components, e.g. waveguides, monitoring photo-detectors, drivers
- H01S5/0265—Intensity modulators
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- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
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- G01J3/10—Arrangements of light sources specially adapted for spectrometry or colorimetry
- G01J2003/102—Plural sources
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- G01J2003/102—Plural sources
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- G—PHYSICS
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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Abstract
Description
100 光学装置
120 光送信端
121 基板
122 発光アレイ
140 光受信端
141 光検出器
144 プロセッサ
160 制御部
200,200a 発光素子
210 活性層
220 第1反射層
230 第2反射層
240 第1電極
250 第2電極
260 波長決定層
Claims (26)
- 基板と、
前記基板上にモノリシックに配置され、それぞれが互いに異なる波長の光を放出する複数個の発光素子を含む発光アレイと、
前記波長が互いに異なる光が、互いに異なるように変調されて同時に放出されるように、前記発光アレイを制御する制御部と、を含む多波長光を利用した光学装置。 - 前記制御部は、
前記複数個の発光素子に印加される駆動信号の波形を異なるように変調することにより、波形が互いに異なる光が放出されるようにすることを特徴とする請求項1に記載の多波長光を利用した光学装置。 - 前記駆動信号の波形は、
前記駆動信号の周波数、振幅、位相のうち少なくとも一つが変調されて決定されることを特徴とする請求項2に記載の多波長光を利用した光学装置。 - 前記駆動信号の波形は、
正弦波、矩形波、三角波、パルス波のうち少なくとも一つを含むことを特徴とする請求項2に記載の多波長光を利用した光学装置。 - 前記発光アレイのうち隣接するように配置された発光素子から放出された光の波形相関度は、隣接しないように配置された発光素子から放出された光の波形相関度より大きいことを特徴とする請求項1〜4のいずれか一つに記載の多波長光を利用した光学装置。
- 前記発光アレイのうち隣接するように配置された発光素子から放出された光の波形相関度は、隣接しないように配置された発光素子から放出された光の波形相関度より小さいことを特徴とする請求項1〜4のいずれか一つに記載の多波長光を利用した光学装置。
- 前記複数個の発光素子は、二次元に配列されたことを特徴とする請求項1〜6のいずれか一つに記載の多波長光を利用した光学装置。
- 前記発光アレイのうち第1方向に順次に配列された発光素子は、波長が順次に変わる光を放出することを特徴とする請求項1〜7のいずれか一つに記載の多波長光を利用した光学装置。
- 前記複数個の発光素子それぞれは、
15nm未満の波長帯域を有する光を放出することを特徴とする請求項1〜8のいずれか一つに記載の多波長光を利用した光学装置。 - 前記発光アレイのうち隣接するように配列された発光素子の中心波長間の間隔は、0.5nm以上30nm以下であることを特徴とする請求項1〜9のいずれか一つに記載の多波長光を利用した光学装置。
- 前記複数個の発光素子のうち少なくとも一つは、
レーザまたはLEDであることを特徴とする請求項1〜10のいずれか一つに記載の多波長光を利用した光学装置。 - 前記複数個の発光素子のうち少なくとも一つは、
前記基板上に配置され、光を発生させる活性層と、
前記活性層で生じた光のうち特定波長の光を外部に放出させる波長決定層と、を含むことを特徴とする請求項1〜11のいずれか一つに記載の多波長光を利用した光学装置。 - 前記特定波長は、
前記波長決定層の厚み及び誘電率のうち少なくとも一つによって決定されることを特徴とする請求項12に記載の多波長光を利用した光学装置。 - 前記活性層は、
前記波長決定層内に配置されることを特徴とする請求項12または13に記載の多波長光を利用した光学装置。 - 前記波長決定層は、
グレーティングパターン構造を含むことを特徴とする請求項12〜14のいずれか一つに記載の多波長光を利用した光学装置。 - 前記波長決定層は、
前記基板の長手方向に複数層の誘電体層が離隔配置されたことを特徴とする請求項15に記載の多波長光を利用した光学装置。 - 前記複数層の誘電体層のピッチは、前記基板の長手方向に連続的に変わることを特徴とする請求項16に記載の多波長光を利用した光学装置。
- 前記複数層の誘電体層は、
第1ピッチに配列された誘電体層と、
前記第1ピッチと異なる第2ピッチに配列された誘電体層と、を含むことを特徴とする請求項16に記載の多波長光を利用した光学装置。 - 前記発光アレイは、
前記基板上に配置され、光を放出する活性層と、
前記活性層上に配置され、前記活性層から入射された光を互いに異なる波長に変換させる複数個の波長変換層と、を含むことを特徴とする請求項1〜18のいずれか一つに記載の多波長光を利用した光学装置。 - 前記活性層上に配置され、前記複数個の波長変換層を分離させる隔壁をさらに含むことを特徴とする請求項19に記載の多波長光を利用した光学装置。
- 前記発光アレイから放出された光のうち、対象体により、散乱、透過または反射した光を検出する光検出器と、
前記光検出器の検出結果を利用し、前記対象体に係わる情報を獲得するプロセッサと、をさらに含むことを特徴とする請求項1〜20のいずれか一つに記載の多波長光を利用した光学装置。 - 前記光検出器は、
イメージセンサを含むことを特徴とする請求項21に記載の多波長光を利用した光学装置。 - 前記プロセッサは、
前記発光アレイから放出された光の波長別に、前記光検出器の検出結果を分類し、
分類された波長別に検出結果を利用し、対象体に係わる情報を獲得することを特徴とする請求項22に記載の多波長光を利用した光学装置。 - 複数個の発光素子を含む光学装置の動作方法において、
前記複数個の発光素子から、波長及び変調が互いに異なる複数個の光を放出する段階と、
前記複数個の光のうち、対象体により、反射または透過された光を検出する段階と、
前記検出された結果を、前記変調を基に、波長別に分類する段階と、
前記分類された検出結果を利用し、対象体に係わる情報を獲得する段階と、を含む方法。 - 前記複数個の光それぞれは、
15nm未満の波長帯域を有することを特徴とする請求項24に記載の方法。 - 前記複数個の光の中心波長間の間隔は、0.5nm以上30nm以下であることを特徴とする請求項24または25に記載の方法。
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KR20210079824A (ko) | 2019-12-20 | 2021-06-30 | 삼성전자주식회사 | 편분광 필터, 편분광 필터 어레이, 및 편분광 센서 |
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