FR494113A - Improvements to photographic or cinematographic projections - Google Patents

Improvements to photographic or cinematographic projections

Info

Publication number
FR494113A
FR494113A FR494113A FR494113DA FR494113A FR 494113 A FR494113 A FR 494113A FR 494113 A FR494113 A FR 494113A FR 494113D A FR494113D A FR 494113DA FR 494113 A FR494113 A FR 494113A
Authority
FR
France
Prior art keywords
photographic
cinematographic
projections
cinematographic projections
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
FR494113A
Other languages
French (fr)
Inventor
Jacques-Louis Pech
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.)
JACQUES-LOUIS PECH
Original Assignee
JACQUES-LOUIS PECH
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 JACQUES-LOUIS PECH filed Critical JACQUES-LOUIS PECH
Application granted granted Critical
Publication of FR494113A publication Critical patent/FR494113A/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
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/606—Projection screens characterised by the nature of the surface for relief projection

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR494113A 1918-05-29 1918-05-29 Improvements to photographic or cinematographic projections Expired FR494113A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR494113T 1918-05-29

Publications (1)

Publication Number Publication Date
FR494113A true FR494113A (en) 1919-08-30

Family

ID=1529790

Family Applications (1)

Application Number Title Priority Date Filing Date
FR494113A Expired FR494113A (en) 1918-05-29 1918-05-29 Improvements to photographic or cinematographic projections

Country Status (1)

Country Link
FR (1) FR494113A (en)

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