FR1227802A - écran de projection repliable - Google Patents

écran de projection repliable

Info

Publication number
FR1227802A
FR1227802A FR797982A FR797982A FR1227802A FR 1227802 A FR1227802 A FR 1227802A FR 797982 A FR797982 A FR 797982A FR 797982 A FR797982 A FR 797982A FR 1227802 A FR1227802 A FR 1227802A
Authority
FR
France
Prior art keywords
projection screen
folding projection
folding
screen
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
FR797982A
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.)
Lens N V
Original Assignee
Lens N V
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 Lens N V filed Critical Lens N V
Application granted granted Critical
Publication of FR1227802A publication Critical patent/FR1227802A/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
    • G03B21/58—Projection screens collapsible, e.g. foldable; of variable area

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR797982A 1958-06-24 1959-06-19 écran de projection repliable Expired FR1227802A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1227802X 1958-06-24

Publications (1)

Publication Number Publication Date
FR1227802A true FR1227802A (fr) 1960-08-24

Family

ID=19872284

Family Applications (1)

Application Number Title Priority Date Filing Date
FR797982A Expired FR1227802A (fr) 1958-06-24 1959-06-19 écran de projection repliable

Country Status (1)

Country Link
FR (1) FR1227802A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112485959A (zh) * 2020-12-01 2021-03-12 北京字节跳动网络技术有限公司 可折叠幕布

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112485959A (zh) * 2020-12-01 2021-03-12 北京字节跳动网络技术有限公司 可折叠幕布

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