FR2420784A1 - Dispositif de projection a double ecran pour cliches photographiques et films - Google Patents
Dispositif de projection a double ecran pour cliches photographiques et filmsInfo
- Publication number
- FR2420784A1 FR2420784A1 FR7809173A FR7809173A FR2420784A1 FR 2420784 A1 FR2420784 A1 FR 2420784A1 FR 7809173 A FR7809173 A FR 7809173A FR 7809173 A FR7809173 A FR 7809173A FR 2420784 A1 FR2420784 A1 FR 2420784A1
- Authority
- FR
- France
- Prior art keywords
- synchronised
- publicity
- projectors
- texts
- slides
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F19/00—Advertising or display means not otherwise provided for
- G09F19/12—Advertising or display means not otherwise provided for using special optical effects
- G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
-
- 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
- G03B21/10—Projectors with built-in or built-on screen
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Marketing (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Projection Apparatus (AREA)
Abstract
L'objet de l'invention concerne un dispositif de projection à double écran pour clichés photographiques et films. Il est constitué par la combinaison de deux écrans juxtaposés sur lesquels sont projetés avec synchronisation, d'une part les images et d'autre part les commentaires. Il est destiné à la projection simultanée, sur un même plan visuel juxtaposé, d'une part d'une image et d'autre part d'un texte explicatif ou publicitaire.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7809173A FR2420784A1 (fr) | 1978-03-22 | 1978-03-22 | Dispositif de projection a double ecran pour cliches photographiques et films |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7809173A FR2420784A1 (fr) | 1978-03-22 | 1978-03-22 | Dispositif de projection a double ecran pour cliches photographiques et films |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2420784A1 true FR2420784A1 (fr) | 1979-10-19 |
Family
ID=9206404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7809173A Withdrawn FR2420784A1 (fr) | 1978-03-22 | 1978-03-22 | Dispositif de projection a double ecran pour cliches photographiques et films |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2420784A1 (fr) |
-
1978
- 1978-03-22 FR FR7809173A patent/FR2420784A1/fr not_active Withdrawn
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |