GB195176A - A method of producing visual depth in projected pictures - Google Patents
A method of producing visual depth in projected picturesInfo
- Publication number
- GB195176A GB195176A GB12822A GB12822A GB195176A GB 195176 A GB195176 A GB 195176A GB 12822 A GB12822 A GB 12822A GB 12822 A GB12822 A GB 12822A GB 195176 A GB195176 A GB 195176A
- Authority
- GB
- United Kingdom
- Prior art keywords
- colours
- blue
- area
- picture
- picture area
- 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)
- Overhead Projectors And Projection Screens (AREA)
Abstract
195,176. Marten, T. H. Jan. 3, 1922. Drawings to Specification. Projection screens have colour elements of different refrangibilty arranged around them to produce visual depth in the projected picture. In one form of the invention the picture area may be surrounded by a black area having coloured lines parallel to the edges of the picture area. The lines contain all the colours of the spectrum, the innermost being red and the outermost blue or blue violet, and are spaced closer together as they recede from the picture area. The picture area may have a blue tone which is strongest at the edges of the area. Various selections of colours may be used, and the colours may comprise only a blue outer line and a red inner line. The colours may be arranged on the screen and be illuminated by projected white lights, or may be otherwise produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB12822A GB195176A (en) | 1922-01-03 | 1922-01-03 | A method of producing visual depth in projected pictures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB12822A GB195176A (en) | 1922-01-03 | 1922-01-03 | A method of producing visual depth in projected pictures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB195176A true GB195176A (en) | 1923-03-29 |
Family
ID=9698894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12822A Expired GB195176A (en) | 1922-01-03 | 1922-01-03 | A method of producing visual depth in projected pictures |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB195176A (en) |
-
1922
- 1922-01-03 GB GB12822A patent/GB195176A/en not_active Expired
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