DE375040C - Recording cinema with a movable mirror inclined at 45 ° to the axis of the object - Google Patents

Recording cinema with a movable mirror inclined at 45 ° to the axis of the object

Info

Publication number
DE375040C
DE375040C DEW58284D DEW0058284D DE375040C DE 375040 C DE375040 C DE 375040C DE W58284 D DEW58284 D DE W58284D DE W0058284 D DEW0058284 D DE W0058284D DE 375040 C DE375040 C DE 375040C
Authority
DE
Germany
Prior art keywords
recording
cinema
axis
mirror
movable mirror
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
Application number
DEW58284D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Publication date
Priority to DEW58284D priority Critical patent/DE375040C/en
Application granted granted Critical
Publication of DE375040C publication Critical patent/DE375040C/en
Expired legal-status Critical Current

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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/08—Trick photography

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Shutters For Cameras (AREA)

Description

Gegenstand der Erfindung ist ein Kinoaufnahmeapparat mit einem gegen die Objektivachse unter 45° geneigten, während der Abdeckung des Bildfensters durch den Verschluß in die Objektivachse rückenden Spiegel, welcher die Lichtstrahlen einer Mattscheii e zuführt.The subject of the invention is a cinema recording apparatus with one facing the lens axis inclined at 45 ° while the picture window is covered by the shutter in the lens axis moving mirror, which the rays of light from a matt sheet e feeds.

Man hat diese Aufga! e, das Bild des Objekts in den Belichtungspausen zu beobachten, i ereits zu lösen versucht, indem man die umlaufende Yerschlußscheibe selbst gegen die Objektivachse in einen Winkel von 450 1 rächte und ihre dem Objektiv zugekehrten feile verspiegelte. Dieser Spiegel wurde von der Belichtungsöffnung durchbrochen und warf das Bild auf eine Beobachtungsscheibe. Da dieser Spiegel sich l· ei der Aufnahme schnell drehen muß, befindet sich das reflektierte Bild stets in Fibration. Ein schwerer Fehler dieser bekannten Einrichtung liegt darin, daß die Belichtungsöffnung gegen den Film im Winkel steht und das Lichtstrahlenbündel an dem vom Film am weitesten entfernten Öffnungsrandteil anders beeinflußt als an den nächstliegenden. Ein zweiter Fehler liegt darin, daß in einer solchen Verschlußscheibe nur ein oder zwei aber immer nur gleich großer Öffnungen möglich sind, während man für gewisse Zwecke gezwungen ist, die Öffnung in der Verschlußscheibe zu verändern. You have this task! to observe e, the image of the object in the exposure pauses ven i tried to solve by itself avenge the orbiting Yerschlußscheibe against the objective axis at an angle of 45 0 1 and their mirrored side facing the objective file. This mirror was broken through by the exposure aperture and threw the image onto an observation disk. Since this mirror must rotate quickly during the recording, the reflected image is always vibrating. A serious flaw in this known device is that the exposure opening is at an angle to the film and influences the light beam differently at the edge of the opening which is furthest away from the film than at the nearest. A second error lies in the fact that only one or two openings of the same size are possible in such a closure disk, while for certain purposes one is forced to change the opening in the closure disk.

Gemäß der Erfindung wird zum Erzeugen des Kontrollbildes ein von der Verschlußscheibe getrennter, .geradlinig hin und her geschobener Spiegel benutzt.According to the invention, one of the shutter disc is used to generate the control image Separate mirror pushed back and forth in a straight line is used.

In der Zeichnung zeigt Abb. 1 das Schema der Anordnung der Teile in der Kammer, Abb. 2 ein Ausführungsbeispiel der Spiegelschlittensteuerung. In the drawing, Fig. 1 shows the scheme of the arrangement of the parts in the chamber, Fig. 2 shows an embodiment of the mirror slide control.

Das Antriebszahnrad 1 läuft mit seinem Exzenterzapfen 5 im Schlitz 2 des in Böcken 9 durch diesen Zapfen hin und her gleitenden Rahmengestänges 3, welches den Spiegel 4 trägt; 10 ist das Objektiv, 6 ein Verschluß, 7 eine Mattscheibe, 8 ein Beobachtungsprisma, 11 der Film, 12 die Lupe für die Filmteobachtung. Der Spiegel liegt zentrisch in der Bildachse, wenn die Verschlußscheibe, mit deren Bewegung die seine geeignet verbunden ist, geschlossen ist.The drive gear 1 runs with its eccentric pin 5 in the slot 2 of the bracket 9 through this pin back and forth sliding frame linkage 3, which the mirror 4 wearing; 10 is the lens, 6 is a shutter, 7 is a ground glass, 8 is an observation prism, 11 the film, 12 the magnifying glass for film observation. The mirror is centrally located in the image axis, if the shutter disc, with their Movement that is suitably connected to it is closed.

Claims (1)

Patent-Anspruch:Patent claim: Aufnahmekino mit einem gegen die Objektivachse unter 45 ° geneigten, während der Abdeckung des Bildfensters die Lichtstrahlen einer Mattscheibe zuführenden Spiegel, dadurch gekennzeichnet, daß der Spiegel (4) mit dem Filmschaltwerk so gekuppelt ist, daß er eine hin und her gehende Bewegung ausführt.Recording cinema with one against the lens axis inclined at 45 °, while covering the picture window the light rays a ground glass feeding mirror, characterized in that the mirror (4) with the film switching mechanism so is coupled that it performs a reciprocating motion. Hierzu ι Blatt Zeichnungen.For this purpose ι sheet of drawings. Berlin. öedruCKT in Der rkichsdruckereI.Berlin. PRINTED IN THE RKICHSPRINTING.
DEW58284D Recording cinema with a movable mirror inclined at 45 ° to the axis of the object Expired DE375040C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEW58284D DE375040C (en) Recording cinema with a movable mirror inclined at 45 ° to the axis of the object

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW58284D DE375040C (en) Recording cinema with a movable mirror inclined at 45 ° to the axis of the object

Publications (1)

Publication Number Publication Date
DE375040C true DE375040C (en) 1923-05-05

Family

ID=7605444

Family Applications (1)

Application Number Title Priority Date Filing Date
DEW58284D Expired DE375040C (en) Recording cinema with a movable mirror inclined at 45 ° to the axis of the object

Country Status (1)

Country Link
DE (1) DE375040C (en)

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