DE525792C - Lens grids for making car types - Google Patents
Lens grids for making car typesInfo
- Publication number
- DE525792C DE525792C DEE37984D DEE0037984D DE525792C DE 525792 C DE525792 C DE 525792C DE E37984 D DEE37984 D DE E37984D DE E0037984 D DEE0037984 D DE E0037984D DE 525792 C DE525792 C DE 525792C
- Authority
- DE
- Germany
- Prior art keywords
- lenses
- lens
- making car
- car types
- cut
- 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
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F5/00—Screening processes; Screens therefor
- G03F5/02—Screening processes; Screens therefor by projection methods
- G03F5/12—Screening processes; Screens therefor by projection methods using other screens, e.g. granulated screen
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
Description
Linsenraster zur Herstellung von Autotypien Die Erfindung betrifft einen Linsenraster zur Herstellung von Autotypien. Von den bekannten Linsenrastern für Lichtdruck unterscheidet sich der Erfindungsgegenstand dadurch, daß die Linsen in Vieleckformen abgeschnitten sind und zwischen mehreren benachbarten Linsen mit zusammenfallenden Kanten eine durch nicht abgeschnittene Linsenrandteile begrenzte Fläche frei bleibt. Dadurch wird der Vorteil erzielt, daß die Linsen näher als bisher aneinandergebracht werden und bessere Hochbelichtungen entstehen.Lenticular grids for making autotypes The invention relates to a lenticular screen for the production of autotypes. From the well-known lens grids for collotype the subject of the invention differs in that the lenses are cut in polygonal shapes and between several adjacent lenses with coincident edges limited by not cut off lens edge parts Area remains free. This has the advantage that the lenses are closer than before are brought together and better high exposures are created.
Auf der Zeichnung ist der Gegenstand der Erfindung beispielsweise dargestellt.In the drawing, the subject of the invention is for example shown.
In einen Linsenraster z aus biegsamem Werkstoff ist eine große Anzahl plankonvexer Linsen 2 mikroskopischer Größe eingedrückt worden. Die Linsen besitzen im wesentlichen parallele optische Achsen und sind in Gruppen von je vier nebeneinanderliegenden Linsen angeordnet.In a lenticular lens z made of flexible material there is a large number plano-convex lenses 2 microscopic size have been impressed. Own the lenses essentially parallel optical axes and are in groups of four adjacent to each other Lenses arranged.
Das Merkmal nach der Erfindung besteht darin, daß jede der Linsen -- abgeschnitten ist. Ihre Kante ist durch vier am Umfang der Linse in gleichen Abständen angeordnete abgeschnittene Linsen gebildet. Die die abgeschnittenen Linsen begrenzenden Flächen stellen Segmente dar, wie aus der Zeichnung ersichtlich ist. Ferner schneiden sich die konvexen sphärischen Oberflächen der Linsen 2, und zwar jede mit den entsprechenden Flächen der vier benachbarten Linsen, so daß jedes benachbarte Linsenpaar in jedem der zwei entsprechenden Schnitte so liegt, daß die die abgeschnittenen Linsen begrenzenden Ebenen bei 3 zusammenfallen. Durch diese Anordnung werden Vertiefungen q. gebildet, die in regelmäßigen Abständen liegen. Die Böden der Vertiefungen q. sind im wesentlichen flach, während die vier Seiten der Vertiefungen durch entsprechende Teile der sphärischen Oberflächen von vier einzelnen sie umgebenden Linsen gebildet werden.The feature of the invention is that each of the lenses - is cut off. Their edge is equal by four on the circumference of the lens Spaced cut lenses formed. The cut lenses Boundary areas represent segments, as can be seen from the drawing. Furthermore, the convex spherical surfaces of the lenses 2 intersect, to be precise each with the corresponding faces of the four adjacent lenses so that each is adjacent Lenses pair in each of the two corresponding cuts is so that the cut off Lenses limiting planes coincide at 3. This arrangement creates depressions q. formed that are at regular intervals. The bottoms of the wells q. are essentially flat, while the four sides of the indentations by corresponding Parts of the spherical surfaces are formed by four individual lenses surrounding them will.
Der Linsenraster nach der Erfindung besteht aus einem einzigen Stück und wird mittels entsprechenden Stempels hergestellt. Die Größe der Zwischenräume der Linsen bestimmt die Größe der vierseitigen abgeschnittenen Linsen. Die Linsenmittelpunkte liegen so dicht wie möglich aneinander, damit unnötig große Zwischenräume vermieden werden.The lens grid according to the invention consists of a single piece and is produced by means of a corresponding stamp. The size of the spaces of the lenses determines the size of the quadrilateral trimmed lenses. The lens centers are as close to each other as possible to avoid unnecessarily large gaps will.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEE37984D DE525792C (en) | 1927-06-18 | Lens grids for making car types |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEE37984D DE525792C (en) | 1927-06-18 | Lens grids for making car types | |
| US199842A US1887872A (en) | 1927-06-18 | 1927-06-18 | Lensic screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE525792C true DE525792C (en) | 1931-05-28 |
Family
ID=22739244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEE37984D Expired DE525792C (en) | 1927-06-18 | Lens grids for making car types |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1887872A (en) |
| DE (1) | DE525792C (en) |
| FR (1) | FR668156A (en) |
| GB (1) | GB324050A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1177934B (en) * | 1958-10-23 | 1964-09-10 | Anton Wilhelm Jemseby | Process for making a raster copy of a transparent original |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2507431A (en) * | 1945-05-17 | 1950-05-09 | Anne F Goddard | Indirect photomechanical reproduction |
| US2569516A (en) * | 1948-04-16 | 1951-10-02 | Corsi Telemaco | Optical system for the determination of the focal point |
| US3549463A (en) * | 1968-06-21 | 1970-12-22 | Riegel Paper Corp | Universal graphic display material having an embossed polyvinyl fluoride surface layer |
| US4332438A (en) * | 1979-03-23 | 1982-06-01 | Lucas Industries Limited | Lens element |
| US4501488A (en) * | 1981-12-16 | 1985-02-26 | Morton Goldsholl | Image processor and method for use in making photographic prints |
-
0
- DE DEE37984D patent/DE525792C/en not_active Expired
-
1927
- 1927-06-18 US US199842A patent/US1887872A/en not_active Expired - Lifetime
-
1928
- 1928-10-11 GB GB29347/28A patent/GB324050A/en not_active Expired
- 1928-10-25 FR FR668156D patent/FR668156A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1177934B (en) * | 1958-10-23 | 1964-09-10 | Anton Wilhelm Jemseby | Process for making a raster copy of a transparent original |
Also Published As
| Publication number | Publication date |
|---|---|
| US1887872A (en) | 1932-11-15 |
| GB324050A (en) | 1930-01-13 |
| FR668156A (en) | 1929-10-29 |
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