DE385419C - Image changer for projector - Google Patents
Image changer for projectorInfo
- Publication number
- DE385419C DE385419C DEE28577D DEE0028577D DE385419C DE 385419 C DE385419 C DE 385419C DE E28577 D DEE28577 D DE E28577D DE E0028577 D DEE0028577 D DE E0028577D DE 385419 C DE385419 C DE 385419C
- Authority
- DE
- Germany
- Prior art keywords
- image
- projector
- changer
- darkening
- frame
- 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
- G03B23/00—Devices for changing pictures in viewing apparatus or projectors
- G03B23/14—Carriers operable to move pictures into, and out of, the projection or viewing position and carrying one or two pictures only in a removable manner also other devices not provided with a stock, e.g. chutes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Description
Die Erfindung betrifft einen Bildwechsler für Bildwerfer mit Vorrichtung zum selbsttätigen Verdunkeln des Bildfeldes beim Bildwechsel und zeichnet sich gegenüber bekannten Einrichtungen durch besondere Einfachheit der Mittel aus, die den Wechsel des Bildrahmens bewirken.The invention relates to an image changer for projector with a device for automatic Darkening of the image field when changing the image and stands out against known ones Facilities characterized by particular simplicity of the means that change the picture frame cause.
Abb. ι zeigt eine Rückansicht mit geöffneter Verdunklervorrichtung: Abb. 2 ist ein ίο Längsschnitt nach Linie i-i der Abb. i, Abb. 3 eine Rückansicht, jedoch mit verschlossener Verdunklungsvorrichtung, Abb. 4 ein Querschnitt nach Linie 3-3 der Abb. 3.Fig. Ι shows a rear view with the darkening device open: Fig. 2 is a ίο longitudinal section along line i-i of Fig. i, Fig. 3 is a rear view, but with the darkening device closed, Fig. 4 a cross section along line 3-3 of Fig. 3.
An dem an sich bekannten Diabilderführungsrahmen sind zwei Führungsschienen b und c befestigt, in denen sich zwei starre Schieber d und e befinden. Ein am Führungsrahmen α angeordneter, um den Drehpunkt/ schwingbarer doppelarmiger Heia0 bei g ist mittels des einen Armes gt mit dem Schieber d bei / verbunden, während der Hebel g„ mittels einer Lenkstange h mit dem Schieber c bei m in Verbindung steht. Der Hebel g2 trägt an seinem Ende eine Gleitrolle i, die in die Bahn des unteren Diarahmens k hineinragt. Beim Herausziehen des unteren Diarahmens aus dem Führungsrahmen trifft die Kante η des Rahmens k auf die Rolle i. In diesem Augenblick erfährt der doppelarmige Hebel g eine Ausschwenkung, durch welche die Schieber d und c nach dem Bildfeld (Pfeile/ in Abb. 1) zu bewegtOn the slide picture guide frame known per se, two guide rails b and c are attached, in which there are two rigid slides d and e . An α on the guide frame disposed, about the fulcrum / swingable double-armed Hela 0 when g is by means of one arm g t to the slider d with / connected while the lever g "by means of a handlebar H with the slider c wherein m is in communication. The lever g 2 carries at its end a roller i which protrudes into the path of the lower slide frame k. When the lower slide frame is pulled out of the guide frame, the edge η of the frame k meets the roller i. At this moment the double-armed lever g is swung out, by means of which the slides d and c are moved towards the image field (arrows / in Fig. 1)
werden. Die Verschiebung der Schieber d und e ist beendet, wenn die Rolle i auf der Kante k^ des Diarahmens aufliegt (Abb. 3). 35 Die Weiterbewegung des Diarahmens hat zur Folge, daß das Gestänge gt, g„, h unter der Wirkung der gespannten Feder ο in die Anfangslage (Abb.1) zurückkehrt und dadurch das Bildfeld wieder freigegeben wird. In- 40 zwischen hat sich der Wechsel des Diabildes in bekannter Weise vollzogen, indem an die Stelle des Diarahmens k der Diarahmen p getreten ist.will. The shifting of the slide d and e is finished when the roller i rests on the edge k ^ of the slide frame (Fig. 3). 35 The further movement of the slide frame has the consequence that the linkage g t , g ″, h returns to the starting position (Fig. 1) under the action of the tensioned spring ο and the image field is released again. In the meantime, the slide image has been changed in a known manner, in that slide frame p has taken the place of slide frame k .
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEE28577D DE385419C (en) | Image changer for projector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEE28577D DE385419C (en) | Image changer for projector |
Publications (1)
Publication Number | Publication Date |
---|---|
DE385419C true DE385419C (en) | 1923-11-23 |
Family
ID=7073417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEE28577D Expired DE385419C (en) | Image changer for projector |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE385419C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1026552B (en) * | 1954-03-15 | 1958-03-20 | Pintsch Bamag Ag | Change slider for darkened image change of stereo slides in pairs |
US2916965A (en) * | 1957-11-22 | 1959-12-15 | Eastman Kodak Co | Slide changer |
-
0
- DE DEE28577D patent/DE385419C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1026552B (en) * | 1954-03-15 | 1958-03-20 | Pintsch Bamag Ag | Change slider for darkened image change of stereo slides in pairs |
US2916965A (en) * | 1957-11-22 | 1959-12-15 | Eastman Kodak Co | Slide changer |
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