GB191640A - Improvements in optical projection screens - Google Patents
Improvements in optical projection screensInfo
- Publication number
- GB191640A GB191640A GB508422A GB508422A GB191640A GB 191640 A GB191640 A GB 191640A GB 508422 A GB508422 A GB 508422A GB 508422 A GB508422 A GB 508422A GB 191640 A GB191640 A GB 191640A
- Authority
- GB
- United Kingdom
- Prior art keywords
- optical projection
- projection screens
- screens
- optical
- projection
- 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
- G03B21/602—Lenticular screens
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB508422A GB191640A (en) | 1922-02-21 | 1922-02-21 | Improvements in optical projection screens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB508422A GB191640A (en) | 1922-02-21 | 1922-02-21 | Improvements in optical projection screens |
Publications (1)
Publication Number | Publication Date |
---|---|
GB191640A true GB191640A (en) | 1923-01-18 |
Family
ID=9789453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB508422A Expired GB191640A (en) | 1922-02-21 | 1922-02-21 | Improvements in optical projection screens |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB191640A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4006965A (en) * | 1974-04-18 | 1977-02-08 | Ryosaku Takada | Projection screen |
US12044686B2 (en) * | 2020-07-15 | 2024-07-23 | Diazyme Laboratories, Inc. | Compositions and methods for assaying neutralizing antibodies |
-
1922
- 1922-02-21 GB GB508422A patent/GB191640A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4006965A (en) * | 1974-04-18 | 1977-02-08 | Ryosaku Takada | Projection screen |
US12044686B2 (en) * | 2020-07-15 | 2024-07-23 | Diazyme Laboratories, Inc. | Compositions and methods for assaying neutralizing antibodies |
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