JPWO2023238279A5 - - Google Patents
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- JPWO2023238279A5 JPWO2023238279A5 JP2023544122A JP2023544122A JPWO2023238279A5 JP WO2023238279 A5 JPWO2023238279 A5 JP WO2023238279A5 JP 2023544122 A JP2023544122 A JP 2023544122A JP 2023544122 A JP2023544122 A JP 2023544122A JP WO2023238279 A5 JPWO2023238279 A5 JP WO2023238279A5
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- 238000002955 isolation Methods 0.000 claims description 14
- 230000003287 optical effect Effects 0.000 claims description 13
- 239000004065 semiconductor Substances 0.000 claims description 9
- 239000013307 optical fiber Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
Description
請求項１の発明の光給電コンバータは、光ファイバケーブルから入力される入射光を半導体受光素子により光電流に変換して出力する光給電コンバータにおいて、前記半導体受光素子は円形受光部を備え、前記円形受光部は、この円形受光部と同心の複数の円環状アイソレーション溝及び前記円形受光部の中心に対して放射状に形成された複数の放射状アイソレーション溝によって分割されて、前記円形受光部の中央部の円形フォトダイオードと、この円形フォトダイオードの外側で周方向に並ぶ複数の放射状フォトダイオードと、前記円形フォトダイオードの外周を仕切る円環状アイソレーション溝の外側で複数の前記放射状アイソレーション溝が周方向に連なる光線変換できない無効領域の形成を防ぐ１つ以上の円環状フォトダイオードを有し、前記円形フォトダイオードと前記円環状フォトダイオードと前記放射状フォトダイオードは、前記入射光の光軸から離隔するほど光強度が低下すると共にこの光軸に対して回転対称の光強度分布と、前記円形受光部の分割数とに基づいて受光量が互いに等しくなるように受光面積が夫々設定され、前記円形フォトダイオードと前記円環状フォトダイオードと複数の前記放射状フォトダイオードが複数の導電性部材によって直列に接続されたことを特徴としている。 According to a first aspect of the present invention, there is provided an optical power supply converter which converts incident light input from an optical fiber cable into a photocurrent using a semiconductor light receiving element and outputs the photocurrent, the semiconductor light receiving element having a circular light receiving portion, the circular light receiving portion being divided by a plurality of annular isolation grooves concentric with the circular light receiving portion and a plurality of radial isolation grooves formed radially from the center of the circular light receiving portion , and comprising a circular photodiode in the center of the circular light receiving portion, a plurality of radial photodiodes arranged in the circumferential direction outside the circular photodiode, and an outer periphery of the annular isolation grooves separating the outer periphery of the circular photodiode. the circular photodiode, the annular photodiode, and the radial photodiode each have a light receiving area set so that the light intensity decreases the farther away from the optical axis of the incident light, and the light receiving areas are set so that the amounts of light received are equal based on a light intensity distribution that is rotationally symmetrical about this optical axis and the number of divisions of the circular light receiving section, and the circular photodiode, the annular photodiode, and the radial photodiodes are connected in series by a plurality of conductive members.
上記構成によれば、半導体受光素子の円形受光部は、複数の円環状アイソレーション溝と複数の放射状アイソレーション溝によって分割され、円形フォトダイオードと１つ以上の円環状フォトダイオードと複数の放射状フォトダイオードが形成されている。そして、これら複数のフォトダイオードが直列に接続されている。この円形受光部が有する円形フォトダイオードと、円環状フォトダイオードと、放射状フォトダイオードの受光面積は、光ファイバケーブルから入力される入射光の光軸から離隔するほど光強度が低下すると共にこの光軸に対して回転対称の光強度分布と円形受光部の分割数とに基づいて、受光量が互いに等しくなるように夫々設定されている。それ故、円形受光部の複数のフォトダイオードで夫々生成される光電流のばらつきが抑制され、これら複数のフォトダイオードが直列に接続された場合に光電流のばらつきに起因する半導体受光素子の出力低下が抑制される。従って、この半導体受光素子を有する光給電コンバータの出力低下が抑制される。そして、円形受光部の分割数が多い場合でも、円形受光部の中央部の円形フォトダイオードの外側において、複数の放射状アイソレーション溝が集中して周方向に連なって形成される光電変換できない無効領域の形成を防ぐ１つ以上の円環状フォトダイオードが、円形フォトダイオードを囲んでいるので、光電流を生成できない無効領域が形成されない。従って、円形受光部の中央部で入射光の光強度が高い部分を光電流に変換することができ、円形受光部における光の利用効率を向上させることができるので、光給電コンバータの出力を向上させることができる。 According to the above configuration, the circular light receiving section of the semiconductor light receiving element is divided by a plurality of annular isolation grooves and a plurality of radial isolation grooves, and a circular photodiode, one or more annular photodiodes, and a plurality of radial photodiodes are formed. These photodiodes are connected in series. The light receiving areas of the circular photodiode, the annular photodiode, and the radial photodiodes of the circular light receiving section are set so that the light intensity decreases as the distance from the optical axis of the incident light input from the optical fiber cable increases, and the light receiving amounts are equal to each other based on the light intensity distribution rotationally symmetrical with respect to the optical axis and the number of divisions of the circular light receiving section . Therefore, the variation in the photocurrent generated by each of the photodiodes of the circular light receiving section is suppressed, and when the plurality of photodiodes are connected in series, the output reduction of the semiconductor light receiving element caused by the variation in the photocurrent is suppressed. Therefore, the output reduction of the optical power supply converter having the semiconductor light receiving element is suppressed. Even when the circular light-receiving section is divided into a large number of sections, one or more annular photodiodes that prevent the formation of an ineffective area in which photoelectric conversion is not possible, formed by a concentration of a plurality of radial isolation grooves connected in a circumferential direction outside the circular photodiode in the center of the circular light-receiving section , surround the circular photodiode, so that no ineffective area in which photocurrent cannot be generated is formed. Therefore, the part of the central part of the circular light-receiving section with high light intensity can be converted into photocurrent, and the light utilization efficiency in the circular light-receiving section can be improved, thereby improving the output of the optical power supply converter.
上記光給電コンバータ１の作用、効果について説明する。
光給電コンバータ１は、光ファイバケーブルＯＣから入力される入射光Ｌを半導体受光素子１０，１０Ａにより光電流に変換して出力する。半導体受光素子１０，１０Ａは、光電変換により光電流を生成する円形受光部１２を有する。円形受光部１２は、この円形受光部１２と同心の複数の円環状アイソレーション溝１３ａ～１３ｎと複数の放射状アイソレーション溝１５によって分割されている。これにより円形受光部１２には、中央部の円形フォトダイオード１４ａと、その外側で周方向に並ぶ複数の放射状フォトダイオード１６と、円形フォトダイオード１４ａの外周を仕切る円環状アイソレーション溝１３ａの外側で複数の放射状アイソレーション溝１５が周方向に連なる光電変換できない無効領域の形成を防ぐために、１つ以上の円環状フォトダイオード１４ｂが形成されている。これら円形フォトダイオード１４ａと円環状フォトダイオード１４ｂと放射状フォトダイオード１６は、入射光の光強度分布と円形受光部の分割数とに基づいて受光量が互いに等しくなるように受光面積が夫々設定され、複数の導電性部材２５，４によって直列に接続されている。
The operation and effects of the optical power supply converter 1 will now be described.
The optical power supply converter 1 converts incident light L input from an optical fiber cable OC into a photocurrent by a semiconductor light receiving element 10, 10A and outputs the photocurrent. The semiconductor light receiving element 10, 10A has a circular light receiving portion 12 that generates a photocurrent by photoelectric conversion. The circular light receiving portion 12 is divided by a plurality of annular isolation grooves 13a to 13n concentric with the circular light receiving portion 12 and a plurality of radial isolation grooves 15. As a result, the circular light receiving portion 12 is formed with a central circular photodiode 14a , a plurality of radial photodiodes 16 arranged in a circumferential direction outside the central circular photodiode 14a, and one or more annular photodiodes 14b in order to prevent the formation of an ineffective region in which photoelectric conversion is not possible, in which a plurality of radial isolation grooves 15 are arranged in a circumferential direction outside the annular isolation groove 13a that divides the outer periphery of the circular photodiode 14a. The circular photodiode 14a, the annular photodiode 14b and the radial photodiode 16 each have a light receiving area set based on the light intensity distribution of the incident light and the number of divisions of the circular light receiving section so that the amount of light received is equal, and are connected in series by a plurality of conductive members 25, 4.
Claims (2)
前記半導体受光素子は円形受光部を備え、
前記円形受光部は、この円形受光部と同心の複数の円環状アイソレーション溝及び前記円形受光部の中心に対して放射状に形成された複数の放射状アイソレーション溝によって分割されて、前記円形受光部の中央部の円形フォトダイオードと、この円形フォトダイオードの外側で周方向に並ぶ複数の放射状フォトダイオードと、前記円形フォトダイオードの外周を仕切る円環状アイソレーション溝の外側で複数の前記放射状アイソレーション溝が周方向に連なる光線変換できない無効領域の形成を防ぐ１つ以上の円環状フォトダイオードを有し、
前記円形フォトダイオードと前記円環状フォトダイオードと前記放射状フォトダイオードは、前記入射光の光軸から離隔するほど光強度が低下すると共にこの光軸に対して回転対称の光強度分布と、前記円形受光部の分割数とに基づいて受光量が互いに等しくなるように受光面積が夫々設定され、
前記円形フォトダイオードと前記円環状フォトダイオードと複数の前記放射状フォトダイオードが複数の導電性部材によって直列に接続されたことを特徴とする光給電コンバータ。 In an optical power supply converter, an incident light from an optical fiber cable is converted into a photocurrent by a semiconductor light receiving element and outputted,
The semiconductor light receiving element has a circular light receiving portion,
the circular light receiving portion is divided by a plurality of annular isolation grooves concentric with the circular light receiving portion and a plurality of radial isolation grooves formed radially with respect to the center of the circular light receiving portion , and has a circular photodiode in the center of the circular light receiving portion, a plurality of radial photodiodes arranged in a circumferential direction outside the circular photodiode, and one or more annular photodiodes that prevent the formation of an invalid area in which light cannot be converted and where the plurality of radial isolation grooves are connected in a circumferential direction outside the annular isolation groove that separates the outer periphery of the circular photodiode ,
the circular photodiode, the annular photodiode and the radial photodiode have light receiving areas set such that the light intensity decreases as the photodiode moves away from the optical axis of the incident light, and the light receiving amounts are equal to each other based on a light intensity distribution that is rotationally symmetric with respect to the optical axis and a division number of the circular light receiving portion ;
2. An optically powered converter, comprising: said circular photodiode, said annular photodiode, and a plurality of said radial photodiodes connected in series by a plurality of conductive members.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2022/023117 WO2023238279A1 (en) | 2022-06-08 | 2022-06-08 | Optical power supply converter |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPWO2023238279A1 JPWO2023238279A1 (en) | 2023-12-14 |
| JP7412834B1 JP7412834B1 (en) | 2024-01-15 |
| JPWO2023238279A5 true JPWO2023238279A5 (en) | 2024-05-21 |
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ID=89117749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2023544122A Active JP7412834B1 (en) | 2022-06-08 | 2022-06-08 | optical power converter |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7412834B1 (en) |
| WO (1) | WO2023238279A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02224375A (en) * | 1989-02-27 | 1990-09-06 | Toshiba Corp | Solar cell module |
| US8742251B2 (en) * | 2006-12-20 | 2014-06-03 | Jds Uniphase Corporation | Multi-segment photovoltaic power converter with a center portion |
| JP6269945B2 (en) * | 2013-09-04 | 2018-01-31 | カシオ計算機株式会社 | Solar panels and watches |
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2022
- 2022-06-08 WO PCT/JP2022/023117 patent/WO2023238279A1/en unknown
- 2022-06-08 JP JP2023544122A patent/JP7412834B1/en active Active
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