JP2009283941A - 反射型光学センサ装置 - Google Patents
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- H01L31/12—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto
- H01L31/16—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto the semiconductor device sensitive to radiation being controlled by the light source or sources
- H01L31/167—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto the semiconductor device sensitive to radiation being controlled by the light source or sources the light sources and the devices sensitive to radiation all being semiconductor devices characterised by potential barriers
- H01L31/173—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto the semiconductor device sensitive to radiation being controlled by the light source or sources the light sources and the devices sensitive to radiation all being semiconductor devices characterised by potential barriers formed in, or on, a common substrate
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- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
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- H01S5/00—Semiconductor lasers
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- H01S5/00—Semiconductor lasers
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- H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
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Abstract
【解決手段】基板上の一定領域に発光領域を備えて形成された半導体光源;および前記半導体光源が形成された基板と同一の基板上に集積されて前記半導体光源の外周面を囲む構造で形成され、受光領域を備える光検出素子;を含み、前記半導体光源から発光された光が外部のオブジェクトによって反射して戻ってくれば、前記光検出素子は、前記反射した光を検出して前記オブジェクトを感知する反射型光学センサ装置を含むことによって費用の節減および小型化が可能であり、光検出素子が半導体光源の外周面を囲むように構成されているため、より正確に光検出を行うことができる効果がある。
【選択図】図2a
Description
したがって、最近では、発光ダイオードの代わりに垂直共振器面発光レーザ(VCSEL)を用いた反射型光学センサが提供されている。
好ましくは、前記半導体光源は、前記基板側に背面発光することができる。
好ましくは、前記半導体光源の発光経路上にはマイクロレンズがさらに追加され、前記マイクロレンズは前記半導体光源の上面に集積されることができる。
また、本発明によれば、光検出素子が半導体光源の外周面を囲むように形成され、より正確な光検出が可能であるという利点がある。
図2aを参照すれば、本発明の一実施形態に係る反射型光学センサ装置は、大きく、半導体光源210および光検出素子220を含む。
また、例えば、積層された層数を加減して反射率を調節することにより、前記上部または下部方向に放出される光の量を調節することもできる。
図2bを参照すれば、まず、第1分散ブラッグ反射器(DBR)240、n型オーミック接触層250、250’、活性層(すなわち、発光領域および受光領域)260、260’、p型オーミック接触層270、270’、および第2分散ブラッグ反射器(DBR)280、280’を順に積層して形成された基板230、例えばn型半導体基板を準備する。
また、光検出素子220が半導体光源210の外周面を囲んでいるため、オブジェクトによって反射した光をより効率的に検出することができる。
この後、マイクロレンズLを製造するために、例えばアルミニウムの比率を徐々に増加させながら化合物半導体酸化可能層310を形成する。
このとき、マイクロレンズLの焦点距離は、例えば酸化時間、温度、および酸化可能層の成長条件などを調節して変化させることができる。
すなわち、図3aおよび図3bでは半導体光源210の上部にマイクロレンズLが形成される反面、図4aおよび図4bでは基板230の下部、すなわち半導体光源210が形成された領域の基板230下部にマイクロレンズLが形成される構造を有する。
このようなリフロー(Reflow)方法によって基板230の下部にマイクロレンズLを形成するためには、まず、基板230の下部に、例えばフォトリソグラフィ(Photo lithography)方法などを用いて所望する大きさのフォトレジスト(Photo−resist)円筒形パターンを形成する。
Claims (7)
- 基板上の一定領域に発光領域を備えて形成された半導体光源と、
前記半導体光源が形成された基板と同一の基板上に集積されて前記半導体光源の外周面を囲む構造で形成され、受光領域を有する光検出素子とを備え、
前記半導体光源から発光された光が外部の対象によって反射して戻ってくれば、前記光検出素子は、前記反射した光を検出して前記対象を感知することを特徴とする反射型光学センサ装置。 - 前記半導体光源の外周面および前記光検出素子の間の一定領域にブロッキング層がさらに形成されることを特徴とする、請求項1に記載の反射型光学センサ装置。
- 前記半導体光源は、トップエミッション方式で前記基板の上部に発光することを特徴とする、請求項1に記載の反射型光学センサ装置。
- 前記半導体光源は、前記基板側に背面発光することを特徴とする、請求項1に記載の反射型光学センサ装置。
- 前記半導体光源の発光経路上にはマイクロレンズがさらに追加され、前記マイクロレンズは、前記半導体光源の上部に集積されることを特徴とする、請求項1に記載の反射型光学センサ装置。
- 前記半導体光源の発光経路上にはマイクロレンズがさらに追加され、前記マイクロレンズは、前記半導体光源が形成された領域の基板下部に集積されることを特徴とする、請求項1に記載の反射型光学センサ装置。
- 前記半導体光源は、前記基板から第1分散ブラッグ反射器、発光領域、および第2分散ブラッグ反射器を含み、前記光検出素子は、前記基板から第1分散ブラッグ反射器、受光領域、および第2分散ブラッグ反射器を含むことを特徴とする、請求項1に記載の反射型光学センサ装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR1020080047166A KR101360294B1 (ko) | 2008-05-21 | 2008-05-21 | 반사형 광학 센서장치 |
KR10-2008-0047166 | 2008-05-21 |
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JP2009283941A true JP2009283941A (ja) | 2009-12-03 |
JP5175243B2 JP5175243B2 (ja) | 2013-04-03 |
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JP2009122952A Expired - Fee Related JP5175243B2 (ja) | 2008-05-21 | 2009-05-21 | 反射型光学センサ装置 |
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US (1) | US7982226B2 (ja) |
EP (1) | EP2124263B1 (ja) |
JP (1) | JP5175243B2 (ja) |
KR (1) | KR101360294B1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2017117891A (ja) * | 2015-12-22 | 2017-06-29 | 株式会社リコー | 光学センサ、光学検査装置、及び光学特性検出方法 |
Families Citing this family (21)
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US8395226B2 (en) * | 2009-01-27 | 2013-03-12 | Insiava (Pty) Limited | Microchip-based MOEMS and waveguide device |
DE112011105262A5 (de) * | 2011-05-19 | 2014-02-27 | Osram Opto Semiconductors Gmbh | Optoelektronische Vorrichtung und Verfahren zur Herstellung von optoelektronischen Vorrichtungen |
US8796724B2 (en) | 2011-12-20 | 2014-08-05 | Todd W Hodrinsky | Light emitting systems and methods |
JP6006108B2 (ja) * | 2012-12-20 | 2016-10-12 | 株式会社アルファ | 光センサユニット |
US9018645B2 (en) * | 2013-08-29 | 2015-04-28 | Stmicroelectronics Pte Ltd | Optoelectronics assembly and method of making optoelectronics assembly |
WO2015055600A1 (en) | 2013-10-16 | 2015-04-23 | Koninklijke Philips N.V. | Compact laser device |
US20150330897A1 (en) * | 2014-05-14 | 2015-11-19 | Semiconductor Components Industries, Llc | Image sensor and method for measuring refractive index |
JP6380973B2 (ja) | 2014-06-16 | 2018-08-29 | 日東電工株式会社 | 光学式センサ |
EP3176888A1 (en) * | 2015-12-03 | 2017-06-07 | Koninklijke Philips N.V. | Sensor chip |
JP6747910B2 (ja) * | 2016-08-10 | 2020-08-26 | 浜松ホトニクス株式会社 | 発光装置 |
US11031751B2 (en) * | 2016-08-10 | 2021-06-08 | Hamamatsu Photonics K.K. | Light-emitting device |
US10734786B2 (en) | 2016-09-07 | 2020-08-04 | Hamamatsu Photonics K.K. | Semiconductor light emitting element and light emitting device including same |
US11646546B2 (en) | 2017-03-27 | 2023-05-09 | Hamamatsu Photonics K.K. | Semiconductor light emitting array with phase modulation regions for generating beam projection patterns |
US11637409B2 (en) | 2017-03-27 | 2023-04-25 | Hamamatsu Photonics K.K. | Semiconductor light-emitting module and control method therefor |
JP6959042B2 (ja) | 2017-06-15 | 2021-11-02 | 浜松ホトニクス株式会社 | 発光装置 |
US10928438B2 (en) | 2017-07-20 | 2021-02-23 | International Business Machines Corporation | Embedded photodetector as device health monitor for hot carrier injection (HCI) in power semiconductors |
JP7245169B2 (ja) | 2017-12-08 | 2023-03-23 | 浜松ホトニクス株式会社 | 発光装置およびその製造方法 |
US20200035862A1 (en) * | 2018-07-26 | 2020-01-30 | Bolb Inc. | Light-emitting device with optical power readout |
US10811400B2 (en) * | 2018-09-28 | 2020-10-20 | Apple Inc. | Wafer level optical module |
US20210098962A1 (en) * | 2019-10-01 | 2021-04-01 | Facebook Technologies, Llc | Vertical cavity surface-emitting laser (vcsel) with a light barrier |
EP3901612A1 (en) * | 2020-04-23 | 2021-10-27 | Sensirion AG | Integrated particulate matter sensor with cavity |
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- 2009-05-19 US US12/468,664 patent/US7982226B2/en not_active Expired - Fee Related
- 2009-05-20 EP EP09160742.4A patent/EP2124263B1/en not_active Not-in-force
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US20090289266A1 (en) | 2009-11-26 |
JP5175243B2 (ja) | 2013-04-03 |
EP2124263B1 (en) | 2017-05-03 |
US7982226B2 (en) | 2011-07-19 |
KR20090121057A (ko) | 2009-11-25 |
KR101360294B1 (ko) | 2014-02-11 |
EP2124263A2 (en) | 2009-11-25 |
EP2124263A3 (en) | 2012-11-07 |
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