FR831476A - Improvements to cinematographic screens - Google Patents
Improvements to cinematographic screensInfo
- Publication number
- FR831476A FR831476A FR831476DA FR831476A FR 831476 A FR831476 A FR 831476A FR 831476D A FR831476D A FR 831476DA FR 831476 A FR831476 A FR 831476A
- Authority
- FR
- France
- Prior art keywords
- cinematographic
- screens
- cinematographic screens
- 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
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB831476X | 1936-12-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR831476A true FR831476A (en) | 1938-09-05 |
Family
ID=10543494
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR831476D Expired FR831476A (en) | 1936-12-31 | 1937-12-30 | Improvements to cinematographic screens |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR831476A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE753376C (en) * | 1938-12-23 | 1953-02-09 | Zeiss Ikon Ag | Focusing screen, especially for photographic and cinematographic apparatus |
-
1937
- 1937-12-30 FR FR831476D patent/FR831476A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE753376C (en) * | 1938-12-23 | 1953-02-09 | Zeiss Ikon Ag | Focusing screen, especially for photographic and cinematographic apparatus |
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