FR1277552A - Improvements to optical projection systems - Google Patents

Improvements to optical projection systems

Info

Publication number
FR1277552A
FR1277552A FR849271A FR849271A FR1277552A FR 1277552 A FR1277552 A FR 1277552A FR 849271 A FR849271 A FR 849271A FR 849271 A FR849271 A FR 849271A FR 1277552 A FR1277552 A FR 1277552A
Authority
FR
France
Prior art keywords
optical projection
projection systems
systems
optical
projection
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.)
Expired
Application number
FR849271A
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries Ltd
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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to FR849271A priority Critical patent/FR1277552A/en
Application granted granted Critical
Publication of FR1277552A publication Critical patent/FR1277552A/en
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
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2026—Gas discharge type light sources, e.g. arcs

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR849271A 1961-01-10 1961-01-10 Improvements to optical projection systems Expired FR1277552A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR849271A FR1277552A (en) 1961-01-10 1961-01-10 Improvements to optical projection systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR849271A FR1277552A (en) 1961-01-10 1961-01-10 Improvements to optical projection systems

Publications (1)

Publication Number Publication Date
FR1277552A true FR1277552A (en) 1961-12-01

Family

ID=8746421

Family Applications (1)

Application Number Title Priority Date Filing Date
FR849271A Expired FR1277552A (en) 1961-01-10 1961-01-10 Improvements to optical projection systems

Country Status (1)

Country Link
FR (1) FR1277552A (en)

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