TW200716955A - Circuit for the brightness measurement of light sources - Google Patents

Circuit for the brightness measurement of light sources

Info

Publication number
TW200716955A
TW200716955A TW095135088A TW95135088A TW200716955A TW 200716955 A TW200716955 A TW 200716955A TW 095135088 A TW095135088 A TW 095135088A TW 95135088 A TW95135088 A TW 95135088A TW 200716955 A TW200716955 A TW 200716955A
Authority
TW
Taiwan
Prior art keywords
light sources
circuit
operational amplifier
brightness measurement
input
Prior art date
Application number
TW095135088A
Other languages
Chinese (zh)
Inventor
Andreas Huber
Peter Niedermeier
Original Assignee
Patent Treuhand Ges Fuer Elek Sche Gluhlampen M B H
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 Patent Treuhand Ges Fuer Elek Sche Gluhlampen M B H filed Critical Patent Treuhand Ges Fuer Elek Sche Gluhlampen M B H
Publication of TW200716955A publication Critical patent/TW200716955A/en

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
    • 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
    • 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
    • G01J2001/4247—Photometry, e.g. photographic exposure meter using electric radiation detectors for testing lamps or other light sources

Abstract

A circuit arrangement to measure the brightness of light sources is provided, it has an operational amplifier (2) whose amplification factor is set to be fixed, where at least one photo-detector (3, 4) is conductively connected with a first input of the operational amplifier (2) and a current path (5) is conductively connected with the first input of the operational amplifier (2) to supply current to the operational amplifier (2).
TW095135088A 2005-09-23 2006-09-22 Circuit for the brightness measurement of light sources TW200716955A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202005015058U DE202005015058U1 (en) 2005-09-23 2005-09-23 Lamp brightness sensor has fixed gain operational amplifier with D/A driven current supply to photodetector connected input terminal

Publications (1)

Publication Number Publication Date
TW200716955A true TW200716955A (en) 2007-05-01

Family

ID=35502320

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095135088A TW200716955A (en) 2005-09-23 2006-09-22 Circuit for the brightness measurement of light sources

Country Status (6)

Country Link
EP (1) EP1927270A1 (en)
KR (1) KR101457021B1 (en)
CN (1) CN101278601B (en)
DE (1) DE202005015058U1 (en)
TW (1) TW200716955A (en)
WO (1) WO2007033966A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57185062A (en) * 1981-05-08 1982-11-15 Hitachi Ltd Controller of light volume
US5089748A (en) * 1990-06-13 1992-02-18 Delco Electronics Corporation Photo-feedback drive system
DE4320682C1 (en) * 1993-06-22 1995-01-26 Siemens Ag Method and circuit arrangement for regulating the lighting of a room
AU6794000A (en) * 1999-08-23 2001-03-19 Bausch & Lomb Incorporated Method of and system for closed loop control of fluorescent lamps
JP2003185497A (en) * 2001-12-20 2003-07-03 Ando Electric Co Ltd Optical power measuring apparatus and offset adjusting method thereof
US7183727B2 (en) 2003-09-23 2007-02-27 Microsemi Corporation Optical and temperature feedbacks to control display brightness
CN1621812A (en) * 2004-12-23 2005-06-01 北京源德生物医学工程有限公司 Photoelectric detection circuit for single photon counting instrument

Also Published As

Publication number Publication date
DE202005015058U1 (en) 2005-12-08
CN101278601A (en) 2008-10-01
WO2007033966A1 (en) 2007-03-29
KR101457021B1 (en) 2014-10-31
EP1927270A1 (en) 2008-06-04
KR20080050624A (en) 2008-06-09
CN101278601B (en) 2010-10-06

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