JP2022000893A - 誘電体ミラーベースのマルチスペクトルフィルタアレイ - Google Patents
誘電体ミラーベースのマルチスペクトルフィルタアレイ Download PDFInfo
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Abstract
Description
tmax=2*(λmax/(4*nref));
tmin=2*(λmin/(4*nref));
と決定されてもよく、ここで、tmaxは、情報が捕獲される最も高い中心波長のためにミラー構造のセットを分離するスペーサ層の合計の厚さを表し、λmaxは、画像データが捕獲される最も高い中心波長を表し、nrefは、スペーサ層の屈折率を表し、tminは、画像データが捕獲される最も低い中心波長のためにミラー構造のセットを分離するスペーサ層の合計の厚さを表し、およびλminは、画像データが捕獲される最も高い中心波長を表す。
c=2x;
と決定されてもよく、ここで、cは、堆積されたスペーサ層の所与の数xに対して生成されることができるチャネルの最大数を表す。いくつかの実施形態では、スペーサ層の特定の数に対して最大のチャネル数を選択することができる。例えば、4つのスペーサ層の堆積では最大16チャネルが生成されてもよいが、4つのスペーサ層に対して9チャネル、10チャネルなどの別のチャネル数が選択されてもよい。この場合、1つ以上のチャネルは、省略または複製されてもよい。例えば、特定の光センサが、特定の波長に関する画像データを捕獲することについての性能不足に関連付けられる場合、特定の波長に関する情報は、情報の精度を向上させるために、複数のチャネルに関連する複数の光センサによって捕獲されるようにされてもよい。
t0=tmin;
t1=(c/2)/((c−1)*2*nref)*(λmax−λmin);
tn=tn−1/2;
n=log2(c);
と決定されてもよく、ここで、tnは、第n番目の層の厚さ(例えば、t0は、第1の層であり、t1は、第2の層である)を表し、cは、チャネルセットのチャネルのチャネル数を表す。いくつかの実施形態では、等距離でないチャネルセットが利用されてもよい。例えば、第1の波長セットと、第1の波長セットと不連続である第2の波長セットとに関する情報を得るために、チャネルの不連続なパターニングが選択されてもよい。この場合、tminおよびtmaxは、やはり決定されるが、異なる中間層のセットが選択されてもよい。いくつかの実施形態では、異なるチャネル数が利用されてもよい。さらに、または代わりに、チャネルのパターニングは、共通の厚さを有する複数のチャネルを用いて利用されてもよく、それにより複数の光センサが共通の波長の光に関する情報を捕獲することを可能にする。
Claims (20)
- 光センサのセットと、
基板と、
を含む光センサデバイスであって、
該基板に配置されたマルチスペクトルフィルタアレイは、
該基板の上に配置された第1の誘電体ミラーと、
該第1の誘電体ミラーの上に配置されたスペーサであって、層のセットを含むスペーサと、
該スペーサの上に配置された第2の誘電体ミラーと、
を含み、
該第2の誘電体ミラーは、センサ素子のセットの2つ以上のセンサ素子と整列している光センサデバイス。 - 前記第1の誘電体ミラーは、均一な厚さを有する請求項1に記載の光センサデバイス。
- 前記スペーサは、前記第1の誘電体ミラーの上に全面的に配置されている請求項1に記載の光センサデバイス。
- 前記第2の誘電体ミラーは、前記センサ素子のセットの大多数と整列している請求項1に記載の光センサデバイス。
- 前記第2の誘電体ミラーは、前記センサ素子のセットのすべてを覆っている請求項1に記載の光センサデバイス。
- 前記層のセットは、スペーサ層のセットを含み、
該スペーサ層のセットの第1の層は、前記光センサのセットと整列している光チャネルのセットの第1のチャネルに対応し、および第1の厚さに関連付けられ、
該スペーサ層のセットの第2の層は、該光チャネルのセットの第2のチャネルに対応し、および該第1の厚さと異なる第2の厚さに関連付けられている、
請求項1に記載の光センサデバイス。 - 前記第1の誘電体ミラーおよび前記第2の誘電体ミラーは、
水素化シリコンベースのミラー、または
二酸化シリコンベースのミラー
のうちの少なくとも1つを含む請求項1に記載の光センサデバイス。 - 前記スペーサは、
酸化物ベースの材料、
窒化物ベースの材料、
ゲルマニウムベースの材料、または
シリコンベースの材料、
のうちの少なくとも1つを含む請求項1に記載の光センサデバイス。 - マルチスペクトルフィルタアレイの1つ以上の層は、堆積層であって、
該堆積層は、パルスマグネトロンスパッタリングプロセスまたはリフトオフプロセスを使用して前記基板の上に堆積されている請求項1に記載の光センサデバイス。 - 前記基板は、半導体基板またはガラスベースの基板であり、および前記光センサのセットは、
該基板の上に配置されたフォトダイオードアレイ、
該基板の上に配置された電荷結合素子(CCD)センサアレイ、または
該基板の上に配置された相補型金属酸化膜半導体(CMOS)センサアレイ、
のうちの少なくとも1つを更に含む請求項1に記載の光センサデバイス。 - 前記光センサのセットに向けられた光をフィルタにかけるために前記マルチスペクトルフィルタアレイの上に配置された1つ以上のフィルタ層であって、
該1つ以上のフィルタ層は、
帯域外遮蔽層のセット、
反射防止コーティング層のセット、または
高次抑制層のセット、
のうちの少なくとも1つを含む、1つ以上のフィルタ層を更に含む請求項1に記載の光センサデバイス。 - 前記第1の誘電体ミラーまたは前記第2の誘電体ミラーのうちの少なくとも1つは、4分の1波長スタックミラーである請求項1に記載の光センサデバイス。
- 第1の層に向けられた光の一部を反射するための第1の誘電体ミラーであり、光センサのセットに関連付けられた基板の上に堆積されている第1の層と、
該第1の層の上のみに堆積され、センサ素子のセットに対応するチャネルのセットに関連付けられた第2の層のセットであって、
該チャネルのセットのチャネルは、該光センサのセットの特定の光センサに向けられるべき光の特定の波長に対応する特定の厚さに関連付けられている第2の層のセットと、
第3の層に向けられた光の一部を反射するための第2の誘電体ミラーであり、該第2の層のセットに関連付けられた複数の該センサ素子のセットの上に堆積されている第3の層と、
を含む光フィルタ。 - 前記光フィルタが光源に露光された場合、前記光センサのセットに向けられた光のスペクトル範囲は、約700nmから約1100nmの間である請求項13に記載の光フィルタ。
- 前記第2の層のセットは、ニオブチタン酸化物ベースの材料を含む請求項13に記載の光フィルタ。
- 前記チャネルのセットは、不均一なチャネル間隔に関連付けられている請求項13に記載の光フィルタ。
- 基板に組み込まれた光センサのセットと、
該基板の上に堆積されたマルチスペクトルフィルタアレイと、
を含むシステムであって、
該マルチスペクトルフィルタアレイは、
光源からの光を部分的に反射する第1の誘電体ミラーであって、高屈折率の層および低屈折率の層の第1の4分の1波長スタックを含む第1の誘電体ミラーと、
光源からの光を部分的に反射する第2の誘電体ミラーであって、高屈折率の層および低屈折率の層の第2の4分の1波長スタックを含む第2の誘電体ミラーと、
該第1の誘電体ミラーと該第2の誘電体ミラーとの間に配置された複数の高屈折率のスペーサ層と、
を含むシステム。 - 前記光センサのセットは、スーパーアレイの複数の光センサである請求項17に記載のシステム。
- 前記高屈折率の層は、水素化シリコン層であり、および前記低屈折率の層は、二酸化シリコン層である請求項17に記載のシステム。
- 前記高屈折率のスペーサ層は、
水素化シリコン層、
酸化チタン層、
酸化ニオブ層、または
酸化チタン層、
のうちの少なくとも1つである請求項17に記載のシステム。
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TW201734416A (zh) | 2017-10-01 |
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CA2952908A1 (en) | 2017-06-29 |
TWI731912B (zh) | 2021-07-01 |
CN107015302A (zh) | 2017-08-04 |
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US11450698B2 (en) | 2022-09-20 |
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