DE419404C - Lock for demonstration cinematograph - Google Patents
Lock for demonstration cinematographInfo
- Publication number
- DE419404C DE419404C DEH94397D DEH0094397D DE419404C DE 419404 C DE419404 C DE 419404C DE H94397 D DEH94397 D DE H94397D DE H0094397 D DEH0094397 D DE H0094397D DE 419404 C DE419404 C DE 419404C
- Authority
- DE
- Germany
- Prior art keywords
- demonstration
- lock
- cinematograph
- wings
- white
- 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
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/08—Shutters
- G03B9/10—Blade or disc rotating or pivoting about axis normal to its plane
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Projection Apparatus (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Description
Verschluß für Vorführungskinematographen. Der Verschluß zur Abdeckung des Bildwechsels an Kinoprojektionsapparaten verursacht in der heute gebräuchlichen Form einen erheblichen Verlust der nutzbaren Energie der Lichtquelle,- und seine Anpassung an die Stärke der Lichtquelle und deren Farbe ist nicht möglich. Ferner wirkt der Verschluß in physiologischer Hinsicht infolge der Reizschwankungen ermüdend auf den Zuschauer (s. F o r c h: Der Kinematograph, S.. 63, Abs. t).Lock for demonstration cinematograph. The lock to the cover the change of image on cinema projectors caused in today's common Form a significant loss of usable energy from the light source - and its Adaptation to the strength of the light source and its color is not possible. Further the closure has a physiological effect due to the fluctuations in stimuli on the viewer (see F o r c h: Der Kinematograph, p. 63, para. t).
Diese Fehler lassen sich auf spektralanalytischem Wege beseitigen. Man hat z. B. die Dunkelsektoren durchscheinend gemacht und je in vier Teile, grün, rot, blau und weiß, aufgeteilt. Durchscheinende Stoffe sind indessen wegen ihrer großen Streuung ungeeignet, ergeben daher keine Lichtersparnis und auch schwer eine sich zu Weiß ergänzende Farbenmischung.These errors can be eliminated using spectral analysis. One has z. B. made the dark sectors translucent and divided each into four parts, green, red, blue and white, divided. Translucent fabrics are, however, because of their unsuitable for large scattering, so they do not result in any savings in light and are also difficult to achieve Mixture of colors complementing white.
Es ist ferner bekannt, an einer Verschlußscheibe mit einem festen und zwei in der Verschlußebene schwenkbaren, an sich undurchsichtigen Flügeln bikonvexe Linsen und durchscheinende farbige, sich zu Weiß oder zu einer Farbe ergänzende Scheibchen so einzusetzen, daß sämtliche Flügel gleiche Farbenzusammenstellungen erhalten. Die beabsichtigte Wirkung ist jedoch infolge der größtenteils undurchsichtigen Scheibe gering. Nach der Erfindung werden an einem Verschluß, dessen Flügel je aus mehreren verschiedenfarbigen, sich zu Weiß oder zu einer Farbe ergänzenden Farbfiltern bestehen, für die Abdeckflügel glasklare Farbenfilter verwandt. Gegenüber den Verschlüssen mit nur durchscheinenden, mehrfarbig unterteilten Abdeckflügeln ergeben glasklare Farbfilter eine erheblich günstigere Ausnutzung der an der Projektionslampe verfügbaren Lichtmenge und decken - trotz ihrer Durchsichtigkeit - die Bewegung des Films von Bild zu Bild infolge der Verschmelzung der verschiedenen Farben innerhalb des Abdeckflügels für die Schaltung vollkommen ab. Die gleiche Verschmelzung bei den übrigen Flügeln bewirkt eine Herabsetzung des Flimmerns, so daß also mit dem Verschluß nach der Erfindung ein bei gleicher Lichtquelle helleres und zugleich ruhiger wirkendes Bild erzielt wird.It is also known to attach to a closure disc with a fixed and two biconvex wings, which are opaque in themselves and pivotable in the closing plane Lentils and translucent colored ones, complementary to white or to a color Insert discs so that all wings have the same color combinations obtain. The intended effect, however, is due to the largely opaque Disc low. According to the invention are attached to a closure, the wings of which are ever made several different colored filters that complement each other with white or one color exist, for the cover wings crystal clear color filters are used. Opposite the closures with only translucent, multi-colored subdivided cover wings result in crystal-clear Color filters a considerably more favorable utilization of the ones available on the projection lamp Amount of light and cover - despite their transparency - the movement of the film from Picture to picture as a result of the merging of the different colors within the cover wing for the circuit completely. The same fusion with the other wings causes a reduction in the flicker, so that with the shutter after the Invention of an image that is brighter and at the same time calmer with the same light source is achieved.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH94397D DE419404C (en) | 1923-08-03 | 1923-08-03 | Lock for demonstration cinematograph |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH94397D DE419404C (en) | 1923-08-03 | 1923-08-03 | Lock for demonstration cinematograph |
Publications (1)
Publication Number | Publication Date |
---|---|
DE419404C true DE419404C (en) | 1925-09-29 |
Family
ID=7166994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEH94397D Expired DE419404C (en) | 1923-08-03 | 1923-08-03 | Lock for demonstration cinematograph |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE419404C (en) |
-
1923
- 1923-08-03 DE DEH94397D patent/DE419404C/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE419404C (en) | Lock for demonstration cinematograph | |
DE646918C (en) | Process for showing images in black and white on lenticular film | |
DE575512C (en) | Device for demonstrating advertising on a universal light or color flap structure | |
DE434539C (en) | Closure for cinematographic demonstration devices | |
US1573890A (en) | Cinematograph projection apparatus | |
AT158691B (en) | Process for the production of series picture films for reproduction in the natural colors using color filters. | |
DE547239C (en) | Arrangement of color filters for naturally colored films | |
DE448968C (en) | Device to achieve three-dimensional and spatially free-floating appearing image effects for advertising and entertainment purposes | |
DE600221C (en) | Process for the projection of photographic images recorded through several color filters | |
DE383729C (en) | Light filters for photographic use | |
DE634494C (en) | Multi-zone filters for the projection of images on lenticular films | |
DE645918C (en) | Process for showing images in black and white on lenticular film | |
DE676734C (en) | Lamp for photographic purposes | |
DE647756C (en) | Process for the projection of lenticular films | |
DE696525C (en) | Process for making colored photographic discs | |
AT111333B (en) | Device for achieving three-dimensional and spatially free-floating visual effects for advertising or entertainment purposes. | |
DE499013C (en) | Filters for color cinematography | |
DE517664C (en) | Color cinematography method | |
DE500401C (en) | Procedure for the demonstration of items placed in a container | |
AT97497B (en) | Device and method for generating natural-colored projection images, in particular row images. | |
AT138480B (en) | Process for the correct reading of lenticular films on photographic materials without a lenticular screen. | |
DE436687C (en) | Process for the production of demonstration screens for photos u. like | |
DE630203C (en) | See-through angle and top view finder | |
DE691539C (en) | Method for reproducing multicolor cinematographic images | |
DE449655C (en) | Device for demonstrating advertising on a universal light or color flap structure |