FR2153366A1 - - Google Patents

Info

Publication number
FR2153366A1
FR2153366A1 FR7233436A FR7233436A FR2153366A1 FR 2153366 A1 FR2153366 A1 FR 2153366A1 FR 7233436 A FR7233436 A FR 7233436A FR 7233436 A FR7233436 A FR 7233436A FR 2153366 A1 FR2153366 A1 FR 2153366A1
Authority
FR
France
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.)
Withdrawn
Application number
FR7233436A
Other languages
French (fr)
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of FR2153366A1 publication Critical patent/FR2153366A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3922—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations and measurement of the incident light
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
    • G03B27/73—Controlling exposure by variation of spectral composition, e.g. multicolor printers

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
FR7233436A 1971-09-23 1972-09-21 Withdrawn FR2153366A1 (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18309471A 1971-09-23 1971-09-23

Publications (1)

Publication Number Publication Date
FR2153366A1 true FR2153366A1 (enExample) 1973-05-04

Family

ID=22671417

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7233436A Withdrawn FR2153366A1 (enExample) 1971-09-23 1972-09-21

Country Status (6)

Country Link
US (1) US3700960A (enExample)
JP (1) JPS4841565A (enExample)
CA (1) CA1031407A (enExample)
DE (1) DE2246234A1 (enExample)
FR (1) FR2153366A1 (enExample)
NL (1) NL7212886A (enExample)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2313997C3 (de) * 1973-03-21 1975-08-28 Intermadox Ag, Zug (Schweiz) Lichtelektrische Potentiometeranordnung unter Vermeidung beweglicher Strom Zuführungen
US3909609A (en) * 1973-10-29 1975-09-30 Xerox Corp Light source measuring apparatus
US3904922A (en) * 1973-11-19 1975-09-09 Xerox Corp Lamp control and lamp switch circuit
GB1449519A (en) * 1973-12-13 1976-09-15 Gunssons Sortex Ltd Light-sensitive sorting machine
US4012663A (en) * 1974-11-25 1977-03-15 General Electric Company Lighting control system
JPS5225484A (en) * 1975-08-21 1977-02-25 Mitsubishi Electric Corp Mixing light illuminating method
US4004188A (en) * 1975-09-26 1977-01-18 General Electric Company Starting circuit for inverter operated gaseous discharge lamps
JPS52104375A (en) * 1976-02-27 1977-09-01 Mitsubishi Electric Corp Illumination method by blended light
US4190795A (en) * 1977-09-09 1980-02-26 Coberly & Associates Constant intensity light source
US4360756A (en) * 1979-11-13 1982-11-23 General Electric Company Metal halide lamp containing ThI4 with added elemental cadmium or zinc
ZA824856B (en) * 1981-07-28 1983-05-25 Lee Electric Lighting Power supply for arc lamps
JPS61110996A (ja) * 1984-11-05 1986-05-29 株式会社日立製作所 高圧放電灯点灯装置
US4697709A (en) * 1985-09-03 1987-10-06 Delta Technology Corporation Sorter for agricultural products
US5333034A (en) * 1992-01-31 1994-07-26 Bremson Data Systems, Inc. System for selectively controlling the spectral make-up of visible light from a source thereof
JP2902272B2 (ja) * 1993-08-27 1999-06-07 株式会社三協精機製作所 磁気カードリーダ
US5581161A (en) * 1994-07-13 1996-12-03 Gong; Mingfu DC coupled electronic ballast with a larger DC and smaller AC signal
US6864642B2 (en) * 2002-10-07 2005-03-08 Bruce Industries, Inc. Electronic ballast with DC output flyback converter
US6879113B2 (en) * 2003-03-11 2005-04-12 Bruce Industries, Inc. Low frequency output electronic ballast

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2749501A (en) * 1950-10-06 1956-06-05 California Packing Corp Photoelectric voltage regulator
US3431427A (en) * 1965-10-24 1969-03-04 Henry D Pahl Jr Solid state color balance controller for incandescent lamps

Also Published As

Publication number Publication date
NL7212886A (enExample) 1973-03-27
DE2246234A1 (de) 1973-03-29
CA1031407A (en) 1978-05-16
JPS4841565A (enExample) 1973-06-18
US3700960A (en) 1972-10-24

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Legal Events

Date Code Title Description
ST Notification of lapse