BE815655A - Procede et appareil pour le controle de projecteurs a lamelles - Google Patents

Procede et appareil pour le controle de projecteurs a lamelles

Info

Publication number
BE815655A
BE815655A BE144846A BE144846A BE815655A BE 815655 A BE815655 A BE 815655A BE 144846 A BE144846 A BE 144846A BE 144846 A BE144846 A BE 144846A BE 815655 A BE815655 A BE 815655A
Authority
BE
Belgium
Prior art keywords
projectors
laminated
control
laminated projectors
Prior art date
Application number
BE144846A
Other languages
English (en)
French (fr)
Inventor
A D Bowry
Ch Francis
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 filed Critical
Publication of BE815655A publication Critical patent/BE815655A/xx

Links

Classifications

    • 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
    • G03B23/00—Devices for changing pictures in viewing apparatus or projectors
    • 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
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/04—Controlling
    • H05B39/08—Controlling by shifting phase of trigger voltage applied to gas-filled controlling tubes also in controlled semiconductor devices
    • H05B39/083—Controlling by shifting phase of trigger voltage applied to gas-filled controlling tubes also in controlled semiconductor devices by the variation-rate of light intensity

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
BE144846A 1973-05-31 1974-05-29 Procede et appareil pour le controle de projecteurs a lamelles BE815655A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2596073A GB1477305A (en) 1973-05-31 1973-05-31 Circuit for controlling the illumination of slide projector lamps

Publications (1)

Publication Number Publication Date
BE815655A true BE815655A (fr) 1974-09-16

Family

ID=10236109

Family Applications (1)

Application Number Title Priority Date Filing Date
BE144846A BE815655A (fr) 1973-05-31 1974-05-29 Procede et appareil pour le controle de projecteurs a lamelles

Country Status (12)

Country Link
US (1) US3958875A (da)
JP (1) JPS5050040A (da)
BE (1) BE815655A (da)
CA (1) CA1043855A (da)
DE (1) DE2426097A1 (da)
DK (1) DK295674A (da)
ES (1) ES426832A1 (da)
FR (1) FR2232170B3 (da)
GB (1) GB1477305A (da)
IT (1) IT1014262B (da)
LU (1) LU70200A1 (da)
NL (1) NL7407281A (da)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0058163A1 (en) * 1980-08-20 1982-08-25 Gaf Corporation Built-in dissolve unit for slide projectors
DE3202124C2 (de) * 1982-01-23 1986-03-20 Kodak Ag, 7000 Stuttgart Schaltungsanordnung zur Steuerung der Überblendung bei Diaprojektoren
DE4201176A1 (de) * 1992-01-17 1993-07-22 Kodak Ag Fernbedienbarer diaprojektor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3282155A (en) * 1964-09-25 1966-11-01 Jr James C Cleary Slide projection control system
US3622236A (en) * 1970-03-04 1971-11-23 Univ Southern Illinois Image display dissolve control
US3841744A (en) * 1971-09-01 1974-10-15 L Rubin Multiple slide projector control system
BE785520A (fr) * 1972-06-28 1972-10-16 Oury Claude Dispositif et code permettant la projection de diapositives en fondu enchaine.

Also Published As

Publication number Publication date
CA1043855A (en) 1978-12-05
GB1477305A (en) 1977-06-22
ES426832A1 (es) 1976-07-16
DK295674A (da) 1975-01-20
US3958875A (en) 1976-05-25
JPS5050040A (da) 1975-05-06
LU70200A1 (da) 1974-10-09
DE2426097A1 (de) 1974-12-19
IT1014262B (it) 1977-04-20
FR2232170B3 (da) 1977-04-08
NL7407281A (da) 1974-12-03
FR2232170A1 (da) 1974-12-27

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