IT988400B - Proiettore cinematografico con mez zi per nioliorare l illuminazione della pellicola - Google Patents

Proiettore cinematografico con mez zi per nioliorare l illuminazione della pellicola

Info

Publication number
IT988400B
IT988400B IT729689A IT968972A IT988400B IT 988400 B IT988400 B IT 988400B IT 729689 A IT729689 A IT 729689A IT 968972 A IT968972 A IT 968972A IT 988400 B IT988400 B IT 988400B
Authority
IT
Italy
Prior art keywords
niolioring
mez
illumination
film
cinematographic projector
Prior art date
Application number
IT729689A
Other languages
English (en)
Inventor
J Thevenaz
Original Assignee
Bolex Int Sa
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 Bolex Int Sa filed Critical Bolex Int Sa
Application granted granted Critical
Publication of IT988400B publication Critical patent/IT988400B/it

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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/32—Details specially adapted for motion-picture projection
    • G03B21/42—Preventing damage to film due to abnormal operation of projector
    • 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
    • G03B19/00—Cameras
    • G03B19/18—Motion-picture cameras
    • 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2053—Intensity control of illuminating 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/32—Details specially adapted for motion-picture projection
    • G03B21/50—Control devices operated by the film strip during the run

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Projection Apparatus (AREA)
  • Protection Of Plants (AREA)
IT729689A 1971-09-27 1972-09-22 Proiettore cinematografico con mez zi per nioliorare l illuminazione della pellicola IT988400B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1414771 1971-09-27

Publications (1)

Publication Number Publication Date
IT988400B true IT988400B (it) 1975-04-10

Family

ID=4398375

Family Applications (1)

Application Number Title Priority Date Filing Date
IT729689A IT988400B (it) 1971-09-27 1972-09-22 Proiettore cinematografico con mez zi per nioliorare l illuminazione della pellicola

Country Status (8)

Country Link
US (1) US3841743A (it)
JP (1) JPS5515694B2 (it)
AT (1) AT307879B (it)
CH (1) CH534894A (it)
DE (1) DE2247039C2 (it)
GB (1) GB1344400A (it)
IT (1) IT988400B (it)
NL (1) NL7212284A (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2230619B2 (it) * 1972-07-07 1978-05-12 Basf Ag
SE7212663L (it) * 1972-09-29 1974-04-01 Octagon Med Prod
US4150886A (en) * 1976-08-26 1979-04-24 Airborne Mfg. Co. Motion picture projector system
DE102011080641A1 (de) 2011-08-09 2013-02-14 Osram Ag Projektionseinheit und Verfahren zum Steuern der Projektionseinheit

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1011593A (en) * 1911-02-23 1911-12-12 William H C Dudley Jr Kinetoscope-shutter.
US1812212A (en) * 1925-08-01 1931-06-30 William H Meyer Motion picture projector
US1900966A (en) * 1927-12-27 1933-03-14 Wilmot R Evans Projection apparatus
US1917408A (en) * 1930-10-01 1933-07-11 Eastman Kodak Co Film gate for motion picture apparatus
GB480267A (en) * 1935-10-03 1938-02-21 Kodak Ltd Improvements in or relating to motion picture or other projection apparatus
DE1120271B (de) * 1956-06-15 1961-12-21 Frieseke & Hoepfner Gmbh Anordnung zur Verminderung der Strahlungswaerme, insbesondere an Kinoprojektoren
US3532424A (en) * 1967-11-16 1970-10-06 Addressograph Multigraph Elliptical reflector for photocopying machine
US3428397A (en) * 1967-12-28 1969-02-18 Dennison Mfg Co Illumination in optical imaging apparatus

Also Published As

Publication number Publication date
NL7212284A (it) 1973-03-29
GB1344400A (en) 1974-01-23
DE2247039A1 (de) 1973-04-05
AT307879B (de) 1973-06-12
CH534894A (fr) 1973-03-15
DE2247039C2 (de) 1981-11-26
JPS5515694B2 (it) 1980-04-25
JPS4843332A (it) 1973-06-22
US3841743A (en) 1974-10-15

Similar Documents

Publication Publication Date Title
BE805137A (fr) Tympan reflechissant la chaleur et la lumiere
CH460950A (de) Leuchte mit Spiegelreflektor und oberflächenleuchtender Lichtquelle
BE773552A (fr) Lampe a intensite et couleur de lumiere variables
AU5103473A (en) Light source
DK126872B (da) Lyskilde med en halogenglødelampe og en reflektor.
IT988400B (it) Proiettore cinematografico con mez zi per nioliorare l illuminazione della pellicola
CH471398A (de) Beleuchtungseinrichtung zur Beleuchtung des Filmfensters eines Filmprojektors
IT983572B (it) Complesso lineare di lampade fotografiche e unita di riflet tore per esse
CH375109A (de) Elektrische Glühlampe mit lichtzerstreuendem Kolben
AT311792B (de) Einrichtung zur bestimmung der farblichtmengen beim photographischen kopieren von transparenten farbnegativen
AT306857B (de) Halogenglühlampe
CA941932A (en) Light valve projector with improved image detail and brightness
AR199088A1 (es) Dispositivo proyector con lampara cambiable
CH460528A (de) Träger mit photographischen Blitzlichtlampen und mit aufgesetzter Haube
CH504822A (de) Bildwiedergabevorrichtung mit Hilfslichtquelle
FR1504229A (fr) Source lumineuse à intensité orientée
BE760928A (fr) Reflecteur pour source lumineuse
BE783826A (fr) Lampe eclair
BE769701A (fr) Lampe-eclair
CH480644A (de) Photographisches oder kinematographisches Objektiv sehr grosser Lichtstärke
FR2116855A5 (fr) Parapluie diffuseur de lumiere
IT950445B (it) Proiettore cinematografico
IT949901B (it) Proiettore con riflettore orientabile
DE2150450B2 (de) Stableuchte fuer roehrenlampen
BR7206753D0 (pt) Luminaria