FR854349A - Projection screen manufacturing process - Google Patents
Projection screen manufacturing processInfo
- Publication number
- FR854349A FR854349A FR854349DA FR854349A FR 854349 A FR854349 A FR 854349A FR 854349D A FR854349D A FR 854349DA FR 854349 A FR854349 A FR 854349A
- Authority
- FR
- France
- Prior art keywords
- manufacturing process
- projection screen
- screen manufacturing
- projection
- screen
- 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
- 238000004519 manufacturing process Methods 0.000 title 1
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
- G03B21/62—Translucent screens
- G03B21/625—Lenticular translucent screens
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE854349X | 1938-05-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR854349A true FR854349A (en) | 1940-04-10 |
Family
ID=6788833
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR854349D Expired FR854349A (en) | 1938-05-06 | 1939-05-06 | Projection screen manufacturing process |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR854349A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2616178A (en) * | 1947-06-18 | 1952-11-04 | Hartford Nat Bank & Trust Co | Device for manufacturing fresnel surfaces |
-
1939
- 1939-05-06 FR FR854349D patent/FR854349A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2616178A (en) * | 1947-06-18 | 1952-11-04 | Hartford Nat Bank & Trust Co | Device for manufacturing fresnel surfaces |
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