FR974948A - Grande surface réfléchissante et divergente combinée - Google Patents

Grande surface réfléchissante et divergente combinée

Info

Publication number
FR974948A
FR974948A FR974948DA FR974948A FR 974948 A FR974948 A FR 974948A FR 974948D A FR974948D A FR 974948DA FR 974948 A FR974948 A FR 974948A
Authority
FR
France
Prior art keywords
surface combined
large reflective
divergent surface
divergent
reflective
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)
Inventor
Marc-Aurele-Marie-Ja Galliano
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
Application granted granted Critical
Publication of FR974948A publication Critical patent/FR974948A/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
    • G03B21/602—Lenticular screens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR974948D 1948-09-13 1948-09-13 Grande surface réfléchissante et divergente combinée Expired FR974948A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR974948T 1948-09-13

Publications (1)

Publication Number Publication Date
FR974948A true FR974948A (fr) 1951-02-27

Family

ID=9517773

Family Applications (1)

Application Number Title Priority Date Filing Date
FR974948D Expired FR974948A (fr) 1948-09-13 1948-09-13 Grande surface réfléchissante et divergente combinée

Country Status (1)

Country Link
FR (1) FR974948A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3931022A1 (de) * 1989-09-16 1991-03-28 Hommelwerke Gmbh Optischer retroreflektor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3931022A1 (de) * 1989-09-16 1991-03-28 Hommelwerke Gmbh Optischer retroreflektor

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