AT350667B - Projektionsgeraet mit in der helligkeit steuerbarer lichtquelle - Google Patents

Projektionsgeraet mit in der helligkeit steuerbarer lichtquelle

Info

Publication number
AT350667B
AT350667B AT317574A AT317574A AT350667B AT 350667 B AT350667 B AT 350667B AT 317574 A AT317574 A AT 317574A AT 317574 A AT317574 A AT 317574A AT 350667 B AT350667 B AT 350667B
Authority
AT
Austria
Prior art keywords
brightness
light source
projection device
source controlled
controlled
Prior art date
Application number
AT317574A
Other languages
English (en)
Other versions
ATA317574A (de
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Priority to AT324175A priority Critical patent/AT347675B/de
Publication of ATA317574A publication Critical patent/ATA317574A/de
Application granted granted Critical
Publication of AT350667B publication Critical patent/AT350667B/de

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
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2026—Gas discharge type light sources, e.g. arcs
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Projection Apparatus (AREA)
AT317574A 1970-04-16 1974-04-17 Projektionsgeraet mit in der helligkeit steuerbarer lichtquelle AT350667B (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT324175A AT347675B (de) 1970-04-16 1975-04-28 Verstaerkungsmaterial fuer eine grundmasse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732319800 DE2319800A1 (de) 1973-04-18 1973-04-18 Projektionsgeraet mit in der helligkeit steuerbarer lichtquelle

Publications (2)

Publication Number Publication Date
ATA317574A ATA317574A (de) 1978-11-15
AT350667B true AT350667B (de) 1979-06-11

Family

ID=5878590

Family Applications (1)

Application Number Title Priority Date Filing Date
AT317574A AT350667B (de) 1970-04-16 1974-04-17 Projektionsgeraet mit in der helligkeit steuerbarer lichtquelle

Country Status (4)

Country Link
AT (1) AT350667B (de)
BE (1) BE813820A (de)
DE (1) DE2319800A1 (de)
GB (1) GB1454653A (de)

Also Published As

Publication number Publication date
GB1454653A (en) 1976-11-03
BE813820A (fr) 1974-08-16
DE2319800A1 (de) 1974-11-07
ATA317574A (de) 1978-11-15

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee
ELJ Ceased due to non-payment of the annual fee