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JPWO2019175062A5
JPWO2019175062A5 JP2020548739A JP2020548739A JPWO2019175062A5 JP WO2019175062 A5 JPWO2019175062 A5 JP WO2019175062A5 JP 2020548739 A JP2020548739 A JP 2020548739A JP 2020548739 A JP2020548739 A JP 2020548739A JP WO2019175062 A5 JPWO2019175062 A5 JP WO2019175062A5
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color splitter
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ｘ軸、ｙ軸、およびｚ軸によって定義された三次元デカルト座標系と関連付けられた色スプリッタ構造であって、前記色スプリッタ構造は、前記ｘ軸に沿って並べて位置付けられた、第１の部分および第２の部分を含み、前記第１の部分および第２の部分の各々は、前記ｘ軸に沿った誘電部分に隣接し、前記誘電部分の各々は、第１の屈折率ｎ1を有し、前記第１の部分は、第２の屈折率ｎ2を有し、前記第２の部分は、第３の屈折率ｎ3を有し、ｎ1＜ｎ3＜ｎ2であり、平面ｘｚを有する断面に従って、前記色スプリッタ構造の前記第１の部分は、前記ｘ軸に沿った第１の幅Ｗ1、および前記ｚ軸に沿った高さＨを有し、前記色スプリッタ構造の前記第２の部分は、前記ｘ軸に沿った第２の幅Ｗ2、および前記ｚ軸に沿った同一の高さＨを有し、前記色スプリッタ構造は更に、前記断面に従って、
－近接場ゾーンにおいて第１のビーム（ＮＪ１）を生成することができる、前記ｚ軸に沿った、前記誘電部分の１つと前記色スプリッタ構造の前記第１の部分との間の第１のエッジと、
－近接場ゾーンにおいて第２のビーム（ＮＪ２）を生成することができる、前記ｚ軸に沿った、前記色スプリッタ構造の前記第１の部分と前記色スプリッタ構造の前記第２の部分との間の第２のエッジと、
－近接場ゾーンにおいて第３のビーム（ＮＪ３）を生成することができる、前記ｚ軸に沿った、前記色スプリッタ構造の前記第２の部分と前記誘電部分の１つとの間の第３のエッジと、を備え、
前記高さＨは、値
Figure 2019175062000001
 に実質的に等しく、ΘB1およびΘB3はそれぞれ、前記第１のビームおよび前記第３のビームの放射角である、
ことを特徴とする色スプリッタ構造。 A first portion of a color splitter structure associated with a three-dimensional Cartesian coordinate system defined by the x-axis, y-axis, and z-axis, wherein the color splitter structure is positioned side-by-side along the x-axis. And a second portion, each of the first portion and the second portion adjacent to a dielectric portion along the x-axis, each of the dielectric portions having a first refractive index n 1 . The first portion has a second refractive index n 2 , the second portion has a third refractive index n 3 , n 1 <n 3 <n 2 , and is a plane. According to a cross section having xz, the first portion of the color splitter structure has a first width W 1 along the x-axis and a height H along the z-axis of the color splitter structure. The second portion has a second width W 2 along the x-axis and the same height H along the z-axis, and the color splitter structure further follows the cross section.
A first edge along the z-axis between one of the dielectric portions and the first portion of the color splitter structure capable of generating a first beam (NJ1) in the proximity zone. When,
-Between the first portion of the color splitter structure and the second portion of the color splitter structure along the z-axis capable of generating a second beam (NJ2) in the proximity zone. With the second edge of
A third edge along the z-axis between the second portion of the color splitter structure and one of the dielectric portions capable of generating a third beam (NJ3) in the proximity zone. And with
The height H is a value
Figure 2019175062000001
 Θ B1 and Θ B3 are the radiation angles of the first beam and the third beam, respectively.
It features a color splitter structure. 請求項１に記載の色スプリッタ構造を含む画像センサであって、前記画像センサは、前記色スプリッタ構造によって部分的に覆われた少なくとも２つの画素を含む、ことを特徴とする画像センサ。 The image sensor including the color splitter structure according to claim 1, wherein the image sensor includes at least two pixels partially covered by the color splitter structure. 前記画素の一方は、第１の色成分に光を記録し、前記画素の他方は、前記第１の色成分とは異なる第２の色成分に光を記録する、ことを特徴とする請求項２に記載の画像センサ。 The claim is characterized in that one of the pixels records light in a first color component and the other of the pixels records light in a second color component different from the first color component. 2. The image sensor according to 2.
Figure 2019175062000002
 であり、Ｗ1＋Ｗ2に等しい前記色スプリッタ構造の幅Ｗは、３９０ナノメートルよりも長く、前記少なくとも２つの画素の一方は、第１の波長λ1が範囲［６２０ナノメートル，７００ナノメートル］の可視光に属するケースでは、前記第１の波長λ1と関連付けられた光を記録し、前記色スプリッタ構造の前記第１の部分の法線に位置する、ことを特徴とする請求項２に記載の画像センサ。
Figure 2019175062000002
 The width W of the color splitter structure equal to W 1 + W 2 is longer than 390 nanometers, and one of the at least two pixels has a first wavelength λ 1 in the range [620 nanometers, 700 nanometers. ], The light associated with the first wavelength λ 1 is recorded and is located at the normal line of the first portion of the color splitter structure. The image sensor described in.
Figure 2019175062000003
 であり、Ｗ1＋Ｗ2に等しい前記色スプリッタ構造の幅Ｗは、３９０ナノメートルよりも長く、前記少なくとも２つの画素の一方は、第１の波長λ1が範囲［３９０ナノメートル，４５０ナノメートル］の可視光に属するケースでは、前記第１の波長λ1と関連付けられた光を記録し、前記色スプリッタ構造の前記第２の部分の法線に位置する、ことを特徴とする請求項２に記載の画像センサ。
Figure 2019175062000003
 The width W of the color splitter structure equal to W 1 + W 2 is longer than 390 nanometers, and one of the at least two pixels has a first wavelength λ 1 in the range [390 nanometers, 450 nanometers. ], The light associated with the first wavelength λ 1 is recorded and is located at the normal line of the second portion of the color splitter structure. The image sensor described in.
Figure 2019175062000004
 であり、Ｗ1＋Ｗ2に等しい前記色スプリッタ構造の幅Ｗは、３９０ナノメートルよりも長く、前記少なくとも２つの画素の一方は、第１の波長λ1が範囲［６２０ナノメートル，７００ナノメートル］の可視光に属するケースでは、前記第１の波長λ1と関連付けられた光を記録し、前記色スプリッタ構造の前記第２の部分の法線に位置する、ことを特徴とする請求項２に記載の画像センサ。
Figure 2019175062000004
 The width W of the color splitter structure equal to W 1 + W 2 is longer than 390 nanometers, and one of the at least two pixels has a first wavelength λ 1 in the range [620 nanometers, 700 nanometers. ], The light associated with the first wavelength λ 1 is recorded and is located at the normal line of the second portion of the color splitter structure. The image sensor described in.
Figure 2019175062000005
 であり、Ｗ1＋Ｗ2に等しい前記色スプリッタ構造の幅Ｗは、３９０ナノメートルよりも長く、前記少なくとも２つの画素の一方は、第１の波長λ1が範囲［３９０ナノメートル，４５０ナノメートル］の可視光に属するケースでは、前記第１の波長λ1と関連付けられた光を記録し、前記色スプリッタ構造の前記第１の部分の法線に位置する、請求項２に記載の画像センサ。
Figure 2019175062000005
 The width W of the color splitter structure equal to W 1 + W 2 is longer than 390 nanometers, and one of the at least two pixels has a first wavelength λ 1 in the range [390 nanometers, 450 nanometers. ], The image sensor according to claim 2, wherein the light associated with the first wavelength λ 1 is recorded and located at the normal line of the first portion of the color splitter structure. .. 前記可視光は、３９０ナノメートルから７００ナノメートルまでに至る波長を有する電磁波を含む、ことを特徴とする請求項３乃至５のいずれか一項に記載の画像センサ。 The image sensor according to any one of claims 3 to 5, wherein the visible light includes an electromagnetic wave having a wavelength ranging from 390 nanometers to 700 nanometers. 前記第１の幅Ｗ1および前記第２の幅Ｗ2は、相互に等しい、ことを特徴とする請求項２乃至８のいずれか一項に記載の画像センサ。 The image sensor according to any one of claims 2 to 8, wherein the first width W 1 and the second width W 2 are equal to each other. 画素の各々のペアは、前記色スプリッタ構造と同一の構造によって覆われる、ことを特徴とする請求項２乃至９のいずれか一項に記載の画像センサ。 The image sensor according to any one of claims 2 to 9, wherein each pair of pixels is covered with the same structure as the color splitter structure. 画素の各々のペアは、代替的に、前記色スプリッタ構造と同一の構造か、または前記色スプリッタ構造と比較して反転した第１の部分および第２の部分を含む構造かのいずれかである構造よって部分的に覆われる、ことを特徴とする請求項２乃至９のいずれか一項に記載の画像センサ。 Each pair of pixels is either alternative to the same structure as the color splitter structure or to include a first and second portion inverted relative to the color splitter structure. The image sensor according to any one of claims 2 to 9, wherein the image sensor is partially covered by a structure. 各々の連続した構造は、Ｗ3に等しい、ｘ軸に沿った幅を有する同一の誘電部分によって分離され、Ｗ3の値は、２５０ナノメートルから６００ナノメートルまでの間に含まれる、ことを特徴とする請求項１０または１１に記載の画像センサ。 Each contiguous structure is separated by the same dielectric moiety having a width along the x-axis, equal to W 3 , and the value of W 3 is contained between 250 and 600 nanometers. The image sensor according to claim 10 or 11. 前記少なくとも２つの画素のうちの少なくとも１つの画素は更に、前記色スプリッタ構造と前記少なくとも２つの画素の各々と関連付けられた感光材質との間に位置付けられた従来の色フィルタを含む、ことを特徴とする請求項２乃至１２のいずれか一項に記載の画像センサ。 At least one of the at least two pixels is further characterized by comprising a conventional color filter positioned between the color splitter structure and the photosensitive material associated with each of the at least two pixels. The image sensor according to any one of claims 2 to 12. 前記高さＨは、値ＨBの約±５％である、ことを特徴とする請求項２乃至１３のいずれか一項に記載の画像センサ。 The image sensor according to any one of claims 2 to 13, wherein the height H is about ± 5% of the value H B. 前記第１のビームおよび前記第３のビームの前記放射角ΘB1およびΘB3は、
Figure 2019175062000006
 に等しく、１または３に等しいｊを有する角度αjは、前記第１のエッジおよび第３のエッジの底角であり、１または３に等しいｊを有するΘTIRjは、前記第１のエッジおよび第３のエッジのそれぞれと関連付けられた屈折の臨界角である、ことを特徴とする請求項２乃至１４のいずれか一項に記載の画像センサ。 The radiation angles Θ B1 and Θ B3 of the first beam and the third beam are
Figure 2019175062000006
 The angle α j having equal j equal to 1 or 3 is the base angle of the first edge and the third edge, and Θ TIRj having j equal to 1 or 3 is said to be equal to 1 or 3 The image sensor according to any one of claims 2 to 14, characterized in that it is a critical angle of refraction associated with each of the third edges. 光学部品であって、
第１の屈折率（ｎ1）を有する第１の誘電部分と、
第２の屈折率（ｎ2）を有する第１の色スプリッタ部分であって、前記第１の色スプリッタ部分は、第１のサイドエッジに沿って前記第１の誘電部分と隣接する、第１の色スプリッタ部分と、
第３の屈折率（ｎ3）を有する第２の色スプリッタ部分であって、ｎ1＜ｎ3＜ｎ2であり、前記第１の色スプリッタ部分および前記第２の色スプリッタ部分は、第２のサイドエッジに沿って隣接し、共通の高さＨを有する、第２の色スプリッタ部分と、
前記第１の屈折率（ｎ1）を有する第２の誘電部分であって、前記第２の誘電部分および前記第２の色スプリッタ部分は、第３のサイドエッジに沿って隣接する、第２の誘電部分と、
を備えたことを特徴とする光学部品。 It ’s an optical component,
A first dielectric moiety having a first refractive index (n 1 ),
A first color splitter portion having a second refractive index (n 2 ), wherein the first color splitter portion is adjacent to the first dielectric portion along a first side edge. Color splitter part and
A second color splitter portion having a third refractive index (n 3 ), where n 1 <n 3 <n 2 , the first color splitter portion and the second color splitter portion are second. A second color splitter portion that is adjacent along the side edge of 2 and has a common height H.
A second dielectric moiety having the first refractive index (n 1 ), wherein the second dielectric moiety and the second color splitter moiety are adjacent along a third side edge. Dielectric part and
An optical component characterized by being equipped with.
Figure 2019175062000007
 である、ことを特徴とする請求項１６に記載の光学部品。
Figure 2019175062000007
 The optical component according to claim 16, wherein the optical component is the same.
Figure 2019175062000008
 である、ことを特徴とする請求項１６に記載の光学部品。
Figure 2019175062000008
 The optical component according to claim 16, wherein the optical component is the same. 前記第１の色スプリッタ部分および前記第２の色スプリッタ部分は、共通の高さ（Ｈ）を有する、ことを特徴とする請求項１６に記載の光学部品。 The optical component according to claim 16, wherein the first color splitter portion and the second color splitter portion have a common height (H). 前記第１の色スプリッタ部分は、第１の幅（Ｗ1）を有し、前記第２の色スプリッタ部分は、第２の幅（Ｗ2）を有し、前記第１の幅および前記第２の幅の合計Ｗ1＋Ｗ2は、３９０ナノメートルよりも長い、ことを特徴とする請求項１６に記載の光学部品。 The first color splitter portion has a first width (W 1 ), the second color splitter portion has a second width (W 2 ), the first width and the first. The optical component according to claim 16, wherein the total width of 2 W 1 + W 2 is longer than 390 nanometers. 少なくとも２つの画像センサ画素を更に備え、前記第１の色スプリッタ部分および前記第２の色スプリッタ部分は、関連付けられた前記画像センサ画素を部分的に覆う、ことを特徴とする請求項１６に記載の光学部品。 16. The 16th aspect of claim 16, further comprising at least two image sensor pixels, wherein the first color splitter portion and the second color splitter portion partially cover the associated image sensor pixel. Optical components.
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