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FR898123A - écran de projection - Google Patents

écran de projection

Info

Publication number
FR898123A
FR898123A FR898123DA FR898123A FR 898123 A FR898123 A FR 898123A FR 898123D A FR898123D A FR 898123DA FR 898123 A FR898123 A FR 898123A
Authority
FR
France
Prior art keywords
projection screen
projection
screen
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
Other languages
English (en)
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon 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 Zeiss Ikon AG filed Critical Zeiss Ikon AG
Application granted granted Critical
Publication of FR898123A publication Critical patent/FR898123A/fr
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
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR898123D 1942-11-28 1943-09-16 écran de projection Expired FR898123A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE898123X 1942-11-28

Publications (1)

Publication Number Publication Date
FR898123A true FR898123A (fr) 1945-04-11

Family

ID=6849018

Family Applications (1)

Application Number Title Priority Date Filing Date
FR898123D Expired FR898123A (fr) 1942-11-28 1943-09-16 écran de projection

Country Status (1)

Country Link
FR (1) FR898123A (fr)

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