AT301348B - Device for the optical compensation of the image field wandering of an information carrier in a recording or playback device - Google Patents

Device for the optical compensation of the image field wandering of an information carrier in a recording or playback device

Info

Publication number
AT301348B
AT301348B AT1045770A AT1045770A AT301348B AT 301348 B AT301348 B AT 301348B AT 1045770 A AT1045770 A AT 1045770A AT 1045770 A AT1045770 A AT 1045770A AT 301348 B AT301348 B AT 301348B
Authority
AT
Austria
Prior art keywords
wandering
recording
information carrier
image field
optical compensation
Prior art date
Application number
AT1045770A
Other languages
German (de)
Inventor
Wilhelm Heinz Broeckl
Original Assignee
Eumig
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Eumig filed Critical Eumig
Priority to AT1045770A priority Critical patent/AT301348B/en
Priority to DE2146319A priority patent/DE2146319B2/en
Priority to US00189623A priority patent/US3806244A/en
Priority to IT9728/71A priority patent/IT938616B/en
Priority to NL7114437A priority patent/NL7114437A/xx
Priority to GB4880971A priority patent/GB1367792A/en
Application granted granted Critical
Publication of AT301348B publication Critical patent/AT301348B/en
Priority to US05/441,000 priority patent/US4003645A/en

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
    • G03B41/00—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor
    • G03B41/02—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor using non-intermittently running film
    • G03B41/04—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor using non-intermittently running film with optical compensator
    • G03B41/10—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor using non-intermittently running film with optical compensator with oscillating reflecting member

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)

Description

  

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   Wie ersichtlich, beträgt der Abstand zwischen den Befestigungspunkten der   Schrauben-15, 19-     - -2a--. Im   dargestellten Ausführungsbeispiel ist nun der   Spiegel --6-- mittels   einer   Klemme --20-- mit   einer   Klemmschraube--21--im Abstand--a--vom   Angriffspunkt der   Schraube--15--bzw.   auch der   Schraube-19--,   somit also in der Mitte des   Torsionsstabes --7-- fixiert.   Da der   Torsionsstab --7-- an   seinem einen Ende im   Lagerbock --16-- eingespannt   ist, wogegen sein mit dem   Hebel --8-- verbundenes   Ende eine dessen Schwenkbewegung entsprechende Verdrehung mitmacht,

   wird diese Verdrehung in der Mitte des   Torsionsstabes --7-- exakt   halbiert. Somit wird eine Winkeldrehung des   Hebels-8-im   Betrag eines Winkels   a   auf den Spiegel im Verhältnis a/2 übertragen. Auf diese Weise wird nicht nur die gewünschte Untersetzung von Hebelbewegung zu Spiegelbewegung erzielt, sondern es wird darüber hinaus eine besondere Feder für den Rücklauf des   Hebels --8-- bzw.   des   Spiegels --6-- eingespart.   



   Im Rahmen der Erfindung sind zahlreiche Ausführungsvarianten denkbar. Vor allem können in entsprechender Weise auch andere Untersetzungsverhältnisse der Hebel- zur Spiegelbewegung erhalten werden. Eine Justierung kann dabei sowohl durch Versetzen des   Lagerbockes --16-- als   auch des Spiegels-6samt seiner Befestigung, schliesslich aber auch gegebenenfalls des   Hebels --8-- entlang   der Achse des   Torsionsstabes --7-- erzielt   werden. 



   PATENTANSPRÜCHE : 
1. Einrichtung zum optischen Ausgleich der Bildfeldwanderung eines in einer einem Teil einer Zylindermantelfläche folgenden Ebene geführten bandförmigen, perforierten Informationsträgers, bei einem Aufnahme- oder Wiedergabegerät, vorzugsweise Schmalfilmprojektor, wobei ein Schwingspiegel um eine Achse, vorzugsweise von einem von der Perforation des Informationsträgers mitgenommenen Schleppgreifer, zu 
 EMI2.1 
 stabförmigen Torsionsfeder, vorzugsweise etwa in deren Mitte, gelagert ist, die an einem Ende fixiert ist und an deren anderem Ende der Antrieb für den Spiegel angreift, wobei zweckmässig die Schwenkachse des Spiegels mit der Zylinderachse zusammenfällt. 
 EMI2.2 




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   As can be seen, the distance between the fastening points of the screws is -15, 19- - -2a--. In the illustrated embodiment, the mirror --6 - is now - by means of a clamp --20 - with a clamping screw - 21 - at a distance - a - from the point of application of the screw - 15 - or. also the screw -19--, thus fixed in the middle of the torsion bar --7--. Since one end of the torsion bar --7-- is clamped in the bearing block --16--, while its end connected to the lever --8-- participates in a rotation corresponding to its pivoting movement,

   this twist is exactly halved in the middle of the torsion bar --7--. Thus, an angular rotation of the lever-8- in the amount of an angle a is transmitted to the mirror in the ratio a / 2. In this way, not only is the desired step-down from lever movement to mirror movement achieved, but a special spring for the return of the lever --8-- or the mirror --6-- is saved.



   Numerous design variants are conceivable within the scope of the invention. Above all, other reduction ratios of the lever movement to the mirror movement can also be obtained in a corresponding manner. An adjustment can be achieved by moving the bearing block --16-- as well as the mirror -6 and its attachment, but also, if necessary, the lever --8-- along the axis of the torsion bar --7--.



   PATENT CLAIMS:
1. Device for optically compensating for the image field wandering of a band-shaped, perforated information carrier guided in a plane following a part of a cylinder jacket surface, in the case of a recording or playback device, preferably a narrow-film projector, with an oscillating mirror around an axis, preferably by a drag gripper carried along by the perforation of the information carrier , to
 EMI2.1
 rod-shaped torsion spring, preferably approximately in the middle, is mounted, which is fixed at one end and at the other end of which the drive for the mirror engages, the pivot axis of the mirror expediently coinciding with the cylinder axis.
 EMI2.2
AT1045770A 1970-10-20 1970-11-19 Device for the optical compensation of the image field wandering of an information carrier in a recording or playback device AT301348B (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
AT1045770A AT301348B (en) 1970-11-19 1970-11-19 Device for the optical compensation of the image field wandering of an information carrier in a recording or playback device
DE2146319A DE2146319B2 (en) 1970-10-20 1971-09-16 Recording or playback device
US00189623A US3806244A (en) 1970-10-20 1971-10-15 Film handling apparatus
IT9728/71A IT938616B (en) 1970-10-20 1971-10-19 APPARATUS FOR GRAPPING OR REPRODUCTION WITH CONTINUOUS MOVEMENT OF THE FILM
NL7114437A NL7114437A (en) 1970-10-20 1971-10-20
GB4880971A GB1367792A (en) 1970-10-20 1971-10-20 Film handling apparatus
US05/441,000 US4003645A (en) 1970-10-20 1974-02-11 Film-handling apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT1045770A AT301348B (en) 1970-11-19 1970-11-19 Device for the optical compensation of the image field wandering of an information carrier in a recording or playback device

Publications (1)

Publication Number Publication Date
AT301348B true AT301348B (en) 1972-08-25

Family

ID=3622470

Family Applications (1)

Application Number Title Priority Date Filing Date
AT1045770A AT301348B (en) 1970-10-20 1970-11-19 Device for the optical compensation of the image field wandering of an information carrier in a recording or playback device

Country Status (1)

Country Link
AT (1) AT301348B (en)

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee