ES2076414T3 - Sistema de fotodiodos. - Google Patents

Sistema de fotodiodos.

Info

Publication number
ES2076414T3
ES2076414T3 ES91110156T ES91110156T ES2076414T3 ES 2076414 T3 ES2076414 T3 ES 2076414T3 ES 91110156 T ES91110156 T ES 91110156T ES 91110156 T ES91110156 T ES 91110156T ES 2076414 T3 ES2076414 T3 ES 2076414T3
Authority
ES
Spain
Prior art keywords
current
photodiode
output signal
converter
integrator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
ES91110156T
Other languages
English (en)
Inventor
Hubert Kuderer
Stefan Rohrer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hewlett Packard GmbH Germany
Original Assignee
Hewlett Packard GmbH Germany
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hewlett Packard GmbH Germany filed Critical Hewlett Packard GmbH Germany
Application granted granted Critical
Publication of ES2076414T3 publication Critical patent/ES2076414T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G01J3/2803—Investigating the spectrum using photoelectric array detector
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/44—Electric circuits
    • G01J1/46—Electric circuits using a capacitor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/50—Control of the SSIS exposure
    • H04N25/57—Control of the dynamic range
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/44—Electric circuits
    • G01J2001/4446—Type of detector
    • G01J2001/446—Photodiode

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Light Receiving Elements (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Facsimile Heads (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

UNA RED FOTODIODICA QUE CONSTA DE UNA PLURALIDAD DE CANALES N, CADA UNO DE LOS CUALES TIENE UN FOTODIODO (1) QUE SE POLARIZA INVERSAMENTE DE TAL MODO QUE ACTUA COMO UNA FUENTE DE CORRIENTE (2). CADA CANAL CONSTA TAMBIEN DE UN CONVERTIDOR DE A/D PARA PROPORCIONAR UNA SEÑAL DE SALIDA DIGITAL (DATA) REPRESENTATIVA DE LA FOTOCORRIENTE (LPH) PROPORCIONADA POR EL FOTODIODO (1) Y, POR TANTO, DE LA INTENSIDAD DE LA LUZ QUE INCIDE SOBRE EL FOTODIODO (1). EL CONVERTIDOR DE A/D CONSTA DE UNA FUENTE DE CORRIENTE CONTROLABLE (5), UN CIRCUITO INTEGRADOR (3,4), UN COMPARADOR (7) PARA COMPARAR LA SEÑAL DE SALIDA (VOUT) DEL INTEGRADOR CON UNA SEÑAL PREDETERMINADA (VTHRESHOLD), UN CIRCUITO LOGICO (6) PARA CONTROLAR LA FUENTE DE CORRIENTE (5) EN RESPUESTA A LA SEÑAL DE SALIDA (VCOMP) DEL COMPARADOR (7) DE MODO QUE LA VOUT SE MANTIENE DENTRO DE UN CIERTO LIMITE. PREFERENTEMENTE, LA FUENTE DE CORRIENTE (5) PROPORCIONA UNA CORRIENTE A MODO DE VACIADOS DE CARGA A Y/O DESDE EL INTEGRADOR (3,4). EL NUMERO DE VACIADOS EN UN SENTIDO LO CUENTA UN CONTADOR (8) Y ES UNA MEDIDA DIGITAL DE LA FOTOCORRIENTE (LPH). LA RED FOTODIODICA ES PARTICULARMENTE UTIL PARA ESPECTROFOTOMETROS PUESTO QUE EL HECHO DE QUE HAYA UN CONVERTIDOR DE A/D INDEPENDIENTE PARA CADA CANAL PERMITE EL PROCESAMIENTO SIMULTANEO DE TODAS LAS FOTOSEÑALES DE LA RED DE MODO QUE SE EVITAN LAS DISTORSIONES DE LOS ESPECTROS QUE TIENE LUGAR DEBIDO A LOS RETARDOS DE TIEMPO DURANTE EL PROCESAMIENTO DE LAS FOTOSEÑALES.
ES91110156T 1991-06-20 1991-06-20 Sistema de fotodiodos. Expired - Lifetime ES2076414T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91110156A EP0519105B1 (en) 1991-06-20 1991-06-20 Photodiode array

Publications (1)

Publication Number Publication Date
ES2076414T3 true ES2076414T3 (es) 1995-11-01

Family

ID=8206853

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91110156T Expired - Lifetime ES2076414T3 (es) 1991-06-20 1991-06-20 Sistema de fotodiodos.

Country Status (5)

Country Link
US (1) US5303027A (es)
EP (1) EP0519105B1 (es)
JP (1) JPH05215607A (es)
DE (1) DE69111800T2 (es)
ES (1) ES2076414T3 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8803064B2 (en) 2009-02-03 2014-08-12 Hamamatsu Photonics K.K. Signal processing device, including charge injection circuit, and photodetection device

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JP5701528B2 (ja) * 2010-07-16 2015-04-15 オリンパス株式会社 生体状態量測定装置
JP5270641B2 (ja) * 2010-11-10 2013-08-21 シャープ株式会社 照度センサ、およびこの照度センサを備えた表示装置
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8803064B2 (en) 2009-02-03 2014-08-12 Hamamatsu Photonics K.K. Signal processing device, including charge injection circuit, and photodetection device

Also Published As

Publication number Publication date
JPH05215607A (ja) 1993-08-24
DE69111800D1 (de) 1995-09-07
US5303027A (en) 1994-04-12
DE69111800T2 (de) 1995-12-14
EP0519105A1 (en) 1992-12-23
EP0519105B1 (en) 1995-08-02

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