DE473070C - Device for copying film strips - Google Patents
Device for copying film stripsInfo
- Publication number
- DE473070C DE473070C DEB126132D DEB0126132D DE473070C DE 473070 C DE473070 C DE 473070C DE B126132 D DEB126132 D DE B126132D DE B0126132 D DEB0126132 D DE B0126132D DE 473070 C DE473070 C DE 473070C
- Authority
- DE
- Germany
- Prior art keywords
- prisms
- film strips
- same
- image
- film
- 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
- G03B27/00—Photographic printing apparatus
- G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
- G03B27/46—Projection printing apparatus, e.g. enlarger, copying camera for automatic sequential copying of different originals, e.g. enlargers, roll film printers
- G03B27/475—Projection printing apparatus, e.g. enlarger, copying camera for automatic sequential copying of different originals, e.g. enlargers, roll film printers copying cinematographic film
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection-Type Copiers In General (AREA)
Description
Vorrichtung zum Kopieren von Filmstreifen Durch 'die Einführung von Schmalfilmen für Heimkinos hat sich das Bedürfnis nach einem optischen Kopierapparat herausgestellt, der gestattet, die normal großen Bilder der üblichen Filmstreifen verkleinert auf den Schmalfilm zu übertragen.Device for copying film strips By 'the introduction of Narrow filming for home theaters has created the need for an optical copier which allows the normal-sized images of the usual film strips reduced to transfer to the cine film.
Grundsätzlich bieten sich hierbei keine Schwierigkeiten, da es bekannt ist, durch optische Mittel Bilder in jedem beliebigen Maßstab zu übertragen. In der Praxis bestehen jedoch eine Reihe von Wünschen und Bedingungen, die von einer solchen Kopiereinrichtung erfüllt werden müssen, wenn sie bequem und zuverlässig arbeiten soll. Wollte man nach dem üblichen Vergrößerungs- bzw. Verkleinerungsverfahren die Filmstreifen in entsprechendem Abstand parallel zueinander anordnen, so müßte man ihre gegenseitige Entfernung ändern können mit Rücksicht auf die Scharfeinstellung und den Abbildungsmaßstab, der ja bei den verschiedenen Schmalfilmformaten ungleich groß ist.In principle, there are no difficulties here, as it is known is to transmit images on any scale by optical means. In in practice, however, there are a number of desires and conditions that must be met by a such copier must be met if they are convenient and reliable should work. If you wanted to use the usual enlargement or reduction process the film strips should be arranged parallel to each other at an appropriate distance one can change their mutual distance with consideration of the focus and the reproduction scale, which is not the same for the various cine film formats is great.
Die Unbequemlichkeit dieser Anordnung wird gemäß vorliegender Erfindung dadurch beseitigt, daß die beiden Filme, nämlich das Original und die Kopie, parallel nebeneinander, und zwar am besten in der gleichen Ebene, geführt werden. Die Bildübertragung geschieht nun, wie die Abb. i zeigt, nicht unmittelbar, sondern durch Vermittlung spiegelnder Flächenplp2 (Prismen). Das Licht der Kopierlampe l tritt beispielsweise durch den zu verkleinernden Negativfilm a, wird durch die Prismen p1 p2 zweimal geknickt und durchläuft das Objektiv o, welches ein verkleinertes Abbild auf den Film b wirft. Scharfeinstellung und Vergrößerungsverhältnis werden durch entsprechende Verschiebung der Prismen und des Objektivs herbeigeführt, ohne daß die Filmstreifen ihre festgelegte Stellung ändern. Diese Ausführung hat noch den weiteren Vorteil, daß man die Fortschaltung des Filmbandes - entweder stetig oder schrittweise - von Schalträdern aus bewirken kann, die auf der gleichen Achse sitzen.The inconvenience of this arrangement is made in accordance with the present invention eliminated by the fact that the two films, namely the original and the copy, are parallel side by side, preferably on the same level. The image transfer now happens, as Fig. i shows, not immediately, but through mediation reflective surface plp2 (prisms). The light of the copy lamp 1 occurs, for example through the negative film a to be reduced, is through the prisms p1 p2 twice bent and passes through the lens o, which shows a reduced image on the Film b throws. The focus and the enlargement ratio are adjusted accordingly Displacement of the prisms and the lens is brought about without the film strip change their established position. This version has the further advantage that the advancement of the film tape - either continuously or step by step - from Can cause ratchet wheels that sit on the same axis.
In der Abb. i sind die Prismen p1 p2 nur schematisch dargestellt; an Stelle der gezeichneten Prismen können solche von anderer Form verwendet werden, die bei der Abbildung eine Höhen- oder Seitenvertauschung oder eine Bilddrehung herbeiführen, wie dies unter Umständen für die Kopie wünschenswert sein kann.In Fig. I, the prisms p1 p2 are only shown schematically; Instead of the drawn prisms, those of a different shape can be used, the height or side reversal or an image rotation in the illustration bring about how this may be desirable for the copy under certain circumstances.
Die Abb. a stellt eine Vorderansicht, die Abb. 3 eine Seitenansicht des Kopierapparates dar. Die obererwähnte Abb: i entspricht etwa den mit A-B bezeichneten Schnitten.Fig. A shows a front view, Fig. 3 is a side view of the copier. The above-mentioned Fig: i corresponds approximately to those marked A-B Cuts.
Ausdrücklich sei erwähnt, daß der Kopierapparat selbstverständlich auch für Kontaktkopien ohne weiteres verwendbar ist; man braucht zu diesem Zweck Negativ und Positiv nur über dieselbe Filmbahn laufen zu lassen; die optische Einrichtung für die Bildverkleinerung ist in diesem Falle überflüssig.It should be expressly mentioned that the copier goes without saying can also be used for contact copies; one needs for this purpose To run negative and positive only over the same film web; the optical device for the image reduction is superfluous in this case.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB126132D DE473070C (en) | Device for copying film strips |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB126132D DE473070C (en) | Device for copying film strips |
Publications (1)
Publication Number | Publication Date |
---|---|
DE473070C true DE473070C (en) | 1929-03-09 |
Family
ID=6996616
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB126132D Expired DE473070C (en) | Device for copying film strips |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE473070C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE899898C (en) * | 1949-05-12 | 1954-05-24 | Thomas D Trabbic | Device for guiding the film in photographic cameras, enlarging apparatus, projectors and similar devices |
DE962402C (en) * | 1941-05-14 | 1957-04-18 | Electricitaets Ges Sanitas M B | Auxiliary device for X-ray screen photography |
DE1039829B (en) * | 1953-04-25 | 1958-09-25 | Zindler Lumoprint Kg | Apparatus for the optical copying of photographic images |
-
0
- DE DEB126132D patent/DE473070C/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE962402C (en) * | 1941-05-14 | 1957-04-18 | Electricitaets Ges Sanitas M B | Auxiliary device for X-ray screen photography |
DE899898C (en) * | 1949-05-12 | 1954-05-24 | Thomas D Trabbic | Device for guiding the film in photographic cameras, enlarging apparatus, projectors and similar devices |
DE1039829B (en) * | 1953-04-25 | 1958-09-25 | Zindler Lumoprint Kg | Apparatus for the optical copying of photographic images |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE473070C (en) | Device for copying film strips | |
DE2451892C3 (en) | Mirror shaft for photographic copiers | |
DE2527381C3 (en) | Copier | |
DE550665C (en) | Cinema playback device with optical compensation | |
DE2357582C2 (en) | An electrophotographic copier having an optical scanning system that can be reciprocated on a carriage | |
DE495684C (en) | Stereoscopic, cinematographic recording device | |
AT148262B (en) | Device for the optical copying of positive films for colored, cinematographic projection with small color partial images. | |
DE676577C (en) | Device for contact copying from lenticular film on lenticular film | |
DE682145C (en) | Method and device for copying intermediate titles or explanatory titles (footer titles) into positive films from an unchanged negative | |
AT165840B (en) | Apparatus for recording or projecting panoramic charts | |
DE528634C (en) | Method for the correct reading of lenticular lenticular films on films of the same type | |
DE660120C (en) | Method for the optical copying of stereo sub-image pairs on a lenticular film with cylindrical lens raster | |
DE598975C (en) | Recording device, in particular for color photography and cinematography | |
DE527158C (en) | Process for the right-sided optical copying of lenticular lenticular films on films of this type with illumination of the negative film from the raster side | |
DE683175C (en) | Method of copying lenticular film | |
DE657316C (en) | Optical copying machine | |
DE598662C (en) | Process for the production of raster images with the help of line or area grids | |
DE659607C (en) | Device for the optical copying of lenticular films | |
AT124422B (en) | Projector for incident and transmitted light. | |
DE511070C (en) | Method and device for stereoscopic cinematography | |
DE545551C (en) | Stereoscope for living images | |
DE711738C (en) | Cinema projector for different film sizes | |
DE375513C (en) | Method and apparatus for eliminating flicker in color cinematography | |
DE814797C (en) | Stereo viewer for picture series | |
DE521506C (en) | Method and device for the production of slide films of multicolored cinematograph images, the partial images of which lie next to one another on the same film |