JP4578797B2 - 撮像装置 - Google Patents
撮像装置 Download PDFInfo
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- JP4578797B2 JP4578797B2 JP2003380208A JP2003380208A JP4578797B2 JP 4578797 B2 JP4578797 B2 JP 4578797B2 JP 2003380208 A JP2003380208 A JP 2003380208A JP 2003380208 A JP2003380208 A JP 2003380208A JP 4578797 B2 JP4578797 B2 JP 4578797B2
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- visible light
- infrared light
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- light
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- 238000003384 imaging method Methods 0.000 title claims abstract description 40
- 238000001514 detection method Methods 0.000 claims abstract description 64
- 230000003287 optical effect Effects 0.000 claims abstract description 30
- 230000031700 light absorption Effects 0.000 claims description 6
- 239000003086 colorant Substances 0.000 description 18
- 238000010586 diagram Methods 0.000 description 17
- 239000004065 semiconductor Substances 0.000 description 14
- 239000000758 substrate Substances 0.000 description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003333 near-infrared imaging Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components 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
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14643—Photodiode arrays; MOS imagers
- H01L27/14645—Colour imagers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
- H04N23/11—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths for generating image signals from visible and infrared light wavelengths
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—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
- H01L31/08—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 in which radiation controls flow of current through the device, e.g. photoresistors
- H01L31/10—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 in which radiation controls flow of current through the device, e.g. photoresistors characterised by potential barriers, e.g. phototransistors
- H01L31/101—Devices sensitive to infrared, visible or ultraviolet radiation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/10—Circuitry of solid-state image sensors [SSIS]; Control thereof for transforming different wavelengths into image signals
- H04N25/11—Arrangement of colour filter arrays [CFA]; Filter mosaics
- H04N25/13—Arrangement of colour filter arrays [CFA]; Filter mosaics characterised by the spectral characteristics of the filter elements
- H04N25/131—Arrangement of colour filter arrays [CFA]; Filter mosaics characterised by the spectral characteristics of the filter elements including elements passing infrared wavelengths
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/10—Circuitry of solid-state image sensors [SSIS]; Control thereof for transforming different wavelengths into image signals
- H04N25/17—Colour separation based on photon absorption depth, e.g. full colour resolution obtained simultaneously at each pixel location
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2209/00—Details of colour television systems
- H04N2209/04—Picture signal generators
- H04N2209/041—Picture signal generators using solid-state devices
- H04N2209/042—Picture signal generators using solid-state devices having a single pick-up sensor
- H04N2209/047—Picture signal generators using solid-state devices having a single pick-up sensor using multispectral pick-up elements
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Hardware Design (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
- Color Television Image Signal Generators (AREA)
- Solid State Image Pick-Up Elements (AREA)
- Image Input (AREA)
- Facsimile Heads (AREA)
- Paper (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Electrotherapy Devices (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
複数の画素を有する撮像素子とを備え、前記複数の画素は、波長によって同一画素内の深さの異なる位置に結像する前記3成分の可視光を検出する可視光検出手段、又は画素内の前記3成分の可視光が結像する深さとは異なる位置に結像する近赤外光を検出する近赤外光検出手段のいずれかを有するものである。
<第1の実施の形態>
図1は、本発明の実施の形態に係る可視・近赤外撮像装置及び方法を説明する概観及び光学系の発明のポイントを記した図であり、図2は、光学系の焦点距離と波長との関係図、図3は、第1の実施の形態に係る撮像素子の構成概略図、図4は、第1の実施の形態に係る撮像素子の具体的構成図、図5は、第1の実施の形態に係る撮像素子の等価回路図、図6と図7は、それぞれ第1の実施の形態に係る撮像素子の可視光検出手段と近赤外光検出手段の混在配置例1と2を示す図である。
Y=0.299×R+0.587×G+0.114×B・・・・・・(1)
と、RGBの線形和として求めるが、
隣接する複数の近赤外光検出手段8からの平均輝度情報Iがあるならば、
Y=c1×R+c2×G+c3×B+c4×I・・・・・・(2)
(ただし、c1+c2+c3+c4=1)
として求めてもよい。
次に、図8は、第2の実施の形態に係る撮像素子の具体的構成図であり、図9は、第2の実施の形態に係る撮像素子の等価回路図である。図8に示す撮像素子の構成では、可視光検出手段及び近赤外光検出手段として、1つの画素内に、波長域の異なる3つの成分の可視光と近赤外光との4つの成分を分離しながら検出する検出手段を配置している。すなわち、1つの画素に配置した4つの電流検出器23、24、25、26で可視光B、G、Rと近赤外光を検出する。
2 撮像素子
3 Blue(青)検出器
4 Green(緑)検出器
5 Red(赤)検出器
6 可視光検出手段
7、31、84 近赤外光検出器
8 近赤外光検出手段
9、91 P型半導体基板
10、12、17、19、21、92、94 N型ドープ領域
11、20、22、93、 P型ドープ領域
13 近赤外光カットフィルタ板
14〜16、18、23〜26、95〜97 電流検出器
27 可視光カットフィルタ板
30 可視光検出器
81 Mg(マゼンダ)色検出器
82 Ye(イエロー)色検出器
83 Cy(シアン)色検出器
Claims (8)
- 波長域の異なる3成分の可視光と近赤外光とがそれぞれ波長によって異なる位置に結像する光学系手段と、
複数の画素を有する撮像素子とを備え、前記複数の画素は、波長によって同一画素内の深さの異なる位置に結像する前記3成分の可視光を検出する可視光検出手段、又は画素内の前記3成分の可視光が結像する深さとは異なる位置に結像する近赤外光を検出する近赤外光検出手段のいずれかを有する撮像装置。 - 前記可視光検出手段は青色、緑色、赤色の3つの異なる波長域の可視光を検出する、光吸収深さの波長依存性に応じた深さの異なる位置に設けた3つの検出器を有し、前記近赤外光検出手段は近赤外光を検出する前記3つの検出器とは深さの異なる位置に検出器を有する請求項1に記載の撮像装置。
- 前記撮像素子は、前記可視光検出手段を有する画素と前記近赤外光検出手段を有する画素とを縦横交互に配置した請求項1又は2に記載の撮像装置。
- 前記撮像素子は、前記可視光検出手段を有する画素の個数と前記近赤外光検出手段を有する画素の個数とを1:3の割合で均等に配置した請求項1又は2に記載の撮像装置。
- 前記撮像素子は、前記可視光検出手段を有する画素の面積と前記近赤外光検出手段を有する画素の面積とを1:3の割合で均等に配置した請求項1又は2に記載の撮像装置。
- 波長域の異なる3成分の可視光と近赤外光とがそれぞれ波長によって異なる位置に結像する光学系手段と、複数の画素を有する撮像素子とを備え、前記複数の画素は、波長によって各々同一画素内の深さの異なる位置に結像する前記3成分の可視光と前記近赤外光とを検出する撮像装置。
- 前記複数の画素は、青色、緑色、赤色の3成分の可視光と近赤外光とを、光吸収深さの波長依存性に応じた深さの異なる位置に設けた4つの検出器で検出する請求項6に記載の撮像装置。
- 前記光学系手段は、可視光の波長の短い光から近赤外光まで、その焦点距離を単調増加させることで、青色、緑色、赤色の3つの異なる波長域の可視光と近赤外光とが異なる位置に結像する請求項1から7のいずれか1つに記載の撮像装置。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003380208A JP4578797B2 (ja) | 2003-11-10 | 2003-11-10 | 撮像装置 |
US10/533,853 US7247851B2 (en) | 2003-11-10 | 2004-04-22 | Imaging device and an imaging method |
DE602004025922T DE602004025922D1 (de) | 2003-11-10 | 2004-04-22 | Abbildungsvorrichtung und abbildungsverfahren |
PCT/JP2004/005799 WO2005045936A1 (ja) | 2003-11-10 | 2004-04-22 | 撮像装置及び撮像方法 |
AT04728931T ATE460748T1 (de) | 2003-11-10 | 2004-04-22 | Abbildungsvorrichtung und abbildungsverfahren |
EP04728931A EP1630871B1 (en) | 2003-11-10 | 2004-04-22 | Imaging device and imaging method |
CNB2004800007772A CN100416843C (zh) | 2003-11-10 | 2004-04-22 | 成像装置及成像方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003380208A JP4578797B2 (ja) | 2003-11-10 | 2003-11-10 | 撮像装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005143038A JP2005143038A (ja) | 2005-06-02 |
JP4578797B2 true JP4578797B2 (ja) | 2010-11-10 |
Family
ID=34567228
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003380208A Expired - Lifetime JP4578797B2 (ja) | 2003-11-10 | 2003-11-10 | 撮像装置 |
Country Status (7)
Country | Link |
---|---|
US (1) | US7247851B2 (ja) |
EP (1) | EP1630871B1 (ja) |
JP (1) | JP4578797B2 (ja) |
CN (1) | CN100416843C (ja) |
AT (1) | ATE460748T1 (ja) |
DE (1) | DE602004025922D1 (ja) |
WO (1) | WO2005045936A1 (ja) |
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WO2005045936A1 (ja) | 2005-05-19 |
CN1723564A (zh) | 2006-01-18 |
JP2005143038A (ja) | 2005-06-02 |
EP1630871A4 (en) | 2007-03-14 |
DE602004025922D1 (de) | 2010-04-22 |
US20060114551A1 (en) | 2006-06-01 |
CN100416843C (zh) | 2008-09-03 |
US7247851B2 (en) | 2007-07-24 |
ATE460748T1 (de) | 2010-03-15 |
EP1630871B1 (en) | 2010-03-10 |
EP1630871A1 (en) | 2006-03-01 |
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