JPS4843332A - - Google Patents

Info

Publication number
JPS4843332A
JPS4843332A JP47096556A JP9655672A JPS4843332A JP S4843332 A JPS4843332 A JP S4843332A JP 47096556 A JP47096556 A JP 47096556A JP 9655672 A JP9655672 A JP 9655672A JP S4843332 A JPS4843332 A JP S4843332A
Authority
JP
Japan
Prior art keywords
frame
intensity
establish
portions
central portion
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.)
Granted
Application number
JP47096556A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5515694B2 (en:Method
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 JPS4843332A publication Critical patent/JPS4843332A/ja
Publication of JPS5515694B2 publication Critical patent/JPS5515694B2/ja
Expired legal-status Critical Current

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)
JP9655672A 1971-09-27 1972-09-26 Expired JPS5515694B2 (en:Method)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
JPS4843332A true JPS4843332A (en:Method) 1973-06-22
JPS5515694B2 JPS5515694B2 (en:Method) 1980-04-25

Family

ID=4398375

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9655672A Expired JPS5515694B2 (en:Method) 1971-09-27 1972-09-26

Country Status (8)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4951218A (en:Method) * 1972-07-07 1974-05-18
CN103842906A (zh) * 2011-08-09 2014-06-04 欧司朗有限公司 投影单元和用于控制投影单元的方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7212663L (en:Method) * 1972-09-29 1974-04-01 Octagon Med Prod
US4150886A (en) * 1976-08-26 1979-04-24 Airborne Mfg. Co. Motion picture projector system

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4951218A (en:Method) * 1972-07-07 1974-05-18
CN103842906A (zh) * 2011-08-09 2014-06-04 欧司朗有限公司 投影单元和用于控制投影单元的方法
US9423679B2 (en) 2011-08-09 2016-08-23 Osram Gmbh Projection unit and method for controlling the projection unit

Also Published As

Publication number Publication date
AT307879B (de) 1973-06-12
GB1344400A (en) 1974-01-23
DE2247039A1 (de) 1973-04-05
CH534894A (fr) 1973-03-15
NL7212284A (en:Method) 1973-03-29
US3841743A (en) 1974-10-15
DE2247039C2 (de) 1981-11-26
JPS5515694B2 (en:Method) 1980-04-25
IT988400B (it) 1975-04-10

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