EP1097340A1 - Gobo rotation system - Google Patents

Gobo rotation system

Info

Publication number
EP1097340A1
EP1097340A1 EP99960689A EP99960689A EP1097340A1 EP 1097340 A1 EP1097340 A1 EP 1097340A1 EP 99960689 A EP99960689 A EP 99960689A EP 99960689 A EP99960689 A EP 99960689A EP 1097340 A1 EP1097340 A1 EP 1097340A1
Authority
EP
European Patent Office
Prior art keywords
bearing
effect disc
rotation system
optical axis
axis
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.)
Granted
Application number
EP99960689A
Other languages
German (de)
French (fr)
Other versions
EP1097340B1 (en
Inventor
Armin Hopp
Dirk Bertelmann
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1097340A1 publication Critical patent/EP1097340A1/en
Application granted granted Critical
Publication of EP1097340B1 publication Critical patent/EP1097340B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S10/00—Lighting devices or systems producing a varying lighting effect
    • F21S10/007—Lighting devices or systems producing a varying lighting effect using rotating transparent or colored disks, e.g. gobo wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/406—Lighting for industrial, commercial, recreational or military use for theatres, stages or film studios

Definitions

  • the invention relates to an effect disc rotation system with a base and at least one effect disc coupled to it, which can be rotated about an axis of rotation by means of a drive, the axis of rotation being offset from an optical axis and the effect disc having at least one optical element which is in the optical range Axis can be turned.
  • effect disc rotation systems also called gobo rotation systems
  • the effect disks usually have a plurality of circumferentially adjacent openings in their outer area, in which various optical elements are arranged, such as Color filters or aperture discs.
  • the effect disk is rotatably mounted about an axis, the distance of this axis from the optical axis of the effect disk rotation system being equal to the distance from the axis of rotation of the effect disk to the center of its openings.
  • each optical element of the effect disk can be rotated into the optical axis, so that a light beam can be influenced in different ways by the effect disk rotation system.
  • the base serves as a support for the effect disc rotation system and can, for example, be a mounting plate for fastening the effect disc rotation system to a headlight or a scaffold. However, it can also be a direct component of a headlight or scaffolding.
  • No. 5,113,332 describes an effect disk rotation system with a plurality of effect disks lying one behind the other in the direction of the optical axis, which are rotatably mounted about the same central axis and have openings in their outer area with different optical elements for producing different patterns.
  • Each of these effect discs has an opening without an optical element. If an optical element of an effect disc is rotated into the area of the optical axis of a light beam, the free openings of the other effect disks can be pivoted into the area of the optical axis, so that only one optical element influences the light beam.
  • optical elements are rotatably mounted in the effect disc. As soon as they are rotated into the area of the optical axis, they can be rotated via a drive.
  • This system has the disadvantage that the optical elements can only be rotated by the drive when they have reached the region of the optical axis. It is therefore not possible to allow the optical element to enter the region of the optical axis in a predetermined position. This is of particular interest, however, if not only the color, but also the contour of the light beam is to be influenced with the optical elements n or an image is to be projected via the optical element.
  • An effect disk rotation system is known from US Pat. No. 5,537,303 in which this problem does not exist. It has an effect disk, in the outer area of which optical elements are rotatably mounted. The optical elements are provided with toothed rings which each engage in a gearwheel rotatably mounted about the central axis of the effect disk. The effect wheel and the gear wheel can be rotated independently about the same axis. Both are rotated via separately controlled drives.
  • the present invention is based on the object of avoiding the aforementioned disadvantages and of providing a simple and inexpensive effect disk rotation system in which at least one optical element can be rotated about its own axis and pivoted into the optical axis of the effect disk rotation system.
  • an effect disk of the type mentioned at the outset in that the effect disk can be rotated about the optical axis independently of a rotation about the axis of rotation.
  • a rotation about its own axis of rotation causes an optical element that is intended to influence the light beam to be rotated into the optical area. Because the effect disk can be rotated about the optical axis, the optical element pivoted into the region of the optical axis can be rotated about the optical axis and thus - provided the optical axes of the optical element and the effect disk rotation system lie on one another - about its own optical axis.
  • the type and size of the optical elements that can be used in the effect disk are not limited by mechanical elements such as, for example, a ring gear that was previously required for the rotation of the optical elements about their own axis. This inevitably gives rise to the further advantage that the number of optical elements can be selected as desired.
  • an optical element rotated decentrally by a certain radius around the optical axis of the effect disc rotation system, namely if the distance between the axis of rotation of the effect disc and the optical axis by precisely this radius is not equal to the distance between the axis of rotation of the effect disc and the center of the opening for the optical element or to the optical axis of the optical element.
  • the axis of rotation of the effect disc is its central axis, so that in the case of a circular effect disc, all optical elements arranged next to one another in the circumferential direction with the same distance from the central axis can be pivoted into the same region of the optical axis of the effect disc rotation system.
  • the effect disc rotation system has a roller bearing with at least two bearing shells which can be rotated relative to one another about the optical axis, a shaft carrying the effect disc being connected to the one bearing shell via a connecting element and the shaft being able to roll on the other bearing shell .
  • the effect disk is hereby rotated about the optical axis of the effect disk rotation system.
  • the effect disk is rotated around its central axis in that the shaft connected to it rolls on the other bearing shell of the roller bearing. This rotary movement can be counteracted if both bearing shells are firmly connected to one another or are driven at the same angular velocity, so that the bearing shells have no relative movement to one another. If the other bearing shell is driven in the opposite direction, the angular velocity caused by the rolling is further increased.
  • the relative movement between the bearing shells of the rolling bearing is used.
  • the two bearing shells of the rolling bearing can be part of a rolling bearing or each part of a rolling bearing.
  • a fixed ring is provided, which is arranged around the optical axis of the system, on the inside of which there is an inner roller bearing and on the outside of which there is an outer roller bearing, the outer bearing shell of the outer roller bearing and the inner bearing shell of the inner roller bearing then are free to move.
  • outer bearing shell of the inner roller bearing is formed in one piece together with the inner bearing shell of the outer roller bearing and the ring arranged around the axis of the optical system and is fixedly connected to the base.
  • roller bearings are provided, each roller bearing being fixedly attached to its own base.
  • the roller bearing is formed by a first roller bearing with at least a first bearing shell and a second bearing shell and a second roller bearing with at least a third and a fourth bearing shell, both roller bearings being arranged around the optical axis, the shaft with the the first bearing shell is connected via the connecting element and can roll on the second bearing shell, and wherein the first bearing shell is firmly connected to the fourth bearing shell and the third bearing shell is fastened to the base.
  • the two bearing shells which are rotatable relative to one another and around the optical axis can each be rotated via a drive, so that both bearing shells can be rotated completely independently of one another.
  • This drive can, for example, drive the bearing shell connected to the connecting element, so that the effect disk can rotate about the axis of the optical system. If only an optical element pivoted into the region of the optical axis is to be rotated around the optical axis, the bearing shell on which the shaft rolls must be connected to the driven bearing shell via a driver, so that a relative movement of the two bearing shells is prevented. However, if the optical element is to be changed, the bearing shell on which the shaft rolls must be held so that the effect disk rotates about its own axis of rotation due to the relative movement between the two bearing shells.
  • the drives of the bearing shells preferably have the same transmission ratio. This ensures that, at the same speed of the drives, the bearing shells rotate at the same angular speed, so that in this case exactly one optical element is rotated around the optical axis in the region thereof.
  • the bearing shells as well as the shaft are driven via a gear transmission. Due to the positive power transmission in the case of gear wheels, a precisely defined position of the effect wheel can be specified at any time if stepper motors are used for the drive. Nevertheless, it is also possible to implement the drive in another way, for example using friction wheels, or even to design it as a belt drive.
  • the effect disk can be positioned around the optical axis in that the connecting element is designed in the form of an annular disk and is provided with a ring gear in which a drive engages. The bearing shell carrying the connecting element thus only fulfills the function of supporting the connecting element and no longer the function of transmitting the driving forces or moments.
  • the connecting element can have a lever arm, wherein the lever arm has a joint between the bearing shell supporting the lever arm and the shaft or is articulated on this bearing shell and can be pivoted about the joint by a drive.
  • the lever can be pivoted, for example, in the plane spanned by the optical axis and a lever arm extending radially to the optical axis, as a result of which the position of the effect disk and thus the position of the optical elements relative to the optical axis is changed.
  • suitable optical elements such as prisms.
  • Such a lever arm can also be designed telescopically and its length can be changed via a drive.
  • This drive can be used, for example, to determine whether an optical element is rotated out of center or centered about the optical axis of the effect disk rotation system.
  • the first and the second bearing shell of the first rolling bearing are an inner ring and an outer ring, the inner ring of the first rolling bearing being rotatably connected to the base, the connecting element being arranged on the inner ring and the shaft via the outer ring of the first rolling bearing can roll off.
  • the effect disk is thereby rotated about the optical axis of the effect disk rotation system.
  • the effect disk is rotated around its central axis in that the one connected to it
  • the shaft rolls on the outer ring of the rolling bearing. This rotary movement can be counteracted in that the outer ring is moved in the same direction as the inner ring by the drive assigned to it. If the outer ring is driven in the opposite direction, the angular velocity caused by the rolling is further increased.
  • the effect disk rotates so that a desired optical element can be brought into the area of the optical axis.
  • the shaft carrying the effect disk preferably rolls on the outer ring insofar as the possible largest transmitted light area of the effect disk rotation system is not unnecessarily restricted thereby and the roller bearing or bearings used can have a comparatively smaller diameter than if the shaft would roll on the inner ring of the roller bearing.
  • Figure 1 shows a cross section through a preferred embodiment of the invention and Figure 2 is a front view of this embodiment.
  • FIG. 1 shows an effect disk rotation system with a base 1 which has an opening 3 for a light beam in the region of an optical axis 2.
  • a first roller bearing 4 with an inner ring 5 and an outer ring 6 is connected to the base 1 via a second roller bearing 7 with an inner ring 8 and an outer ring 9.
  • the inner ring 8 of the second roller bearing 7 is held by a connecting ring 10 on the base 1 via an interference fit.
  • the outer ring 9 of the second roller bearing 7 is connected to the inner ring 5 of the first roller bearing 4 via an annular disc 11 which tapers conically in the axial direction.
  • the connection is made using press fits.
  • a second connecting ring 12 engages in the inner ring 5 of the roller bearing 4 via an interference fit.
  • This connecting ring is firmly connected to an annular disk-shaped connecting element 13.
  • the connecting element 13 has an opening concentric to the optical axis to pass a light beam and projects radially completely beyond the first roller bearing 4.
  • a shaft 14 is mounted, the axis 15 of which is arranged parallel to the optical axis 2 of the effect disc rotation system.
  • the shaft 14 carries an effect disk 16 on the side of the connecting element 13 facing away from the base 1. As can be seen in FIG. 2, this effect disk 16 has a multiplicity of openings 17 in which optical elements are arranged (not shown here).
  • the shaft 14 has at its other end a gear 18 which engages in a ring gear 19 which comprises the outer ring 6 of the first roller bearing 4.
  • a gearwheel 20 of a first drive which is not shown completely, engages in this ring gear 19.
  • the outer ring 9 of the second roller bearing 7 is also surrounded by a ring gear 21.
  • a toothed wheel 22 of a second drive which is also not shown here, engages in this ring gear 21.
  • the outer ring 6 of the roller bearing 4 is rotated about the optical axis 2, the inner ring 5 of the first roller bearing 4 remaining.
  • a desired optical element can be screwed into the area of the optical axis 2.
  • adjacent optical elements can be designed as pattern diaphragms, the patterns varying slightly so that a moving image can be generated when different successive pattern apertures are run through.
  • the effect disk 16 is rotated about the optical axis 2 of the effect disk rotation system. Due to the relative movement between the inner ring 5 and outer ring 6 of the first roller bearing 4, the effect disk 16 is simultaneously rotated about its central axis 15 in the opposite direction. The result of this is that the optical elements are moved over the region of the optical axis 2 in accordance with the angular velocity of the effect disk 16 about its central axis 15. If you want this rotation of the effect To compensate disc 16 in such a way that an optical element remains in the region of the optical axis 2, the outer ring 6 of the first roller bearing 4 must rotate at the same angular velocity as the inner ring 5, so that relative movement does not occur.
  • the direction of movement of the image can be changed by additionally using the second drive. If, for example, an image of passing clouds is generated, the direction of the clouds from horizontal to vertical or in any other direction can be changed in this way.
  • the gear ratio of the gear 20 of the first drive to the ring gear 19 on the outer ring 6 of the first roller bearing 4 is the same as the gear ratio of the gear 22 of the second drive to the ring gear 21 on the outer ring 9 of the second rolling bearing 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Rolling Contact Bearings (AREA)
  • Automatic Disk Changers (AREA)
  • Friction Gearing (AREA)
  • Transmission Devices (AREA)
  • Telescopes (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Lock And Its Accessories (AREA)
  • Polarising Elements (AREA)

Abstract

The invention relates to a gobo rotation system comprising a base (1) and at least one gobo (16) coupled therewith which can be rotated about an axis of rotation (15) by means of a drive. The axis of rotation is offset in relation to an optical axis (2) and the gobo comprises at least one optical element which can be rotated into the area of the optical axis. The gobo can also be rotated about the optical axis independently of a rotation about the axis of rotation.

Description

Effektscheibenrotationssystem Effect disc rotation system
Die Erfindung betrifft ein Effektscheibenrotationssystem mit einer Basis und mindestens einer damit gekoppelten Effektscheibe, die mittels eines Antriebs um eine Drehachse drehbar ist, wobei die Drehachse zu einer optischen Achse versetzt angeordnet ist und die Effektscheibe mindestens ein optisches Element aufweist, das in den Bereich der optischen Achse hineingedreht werden kann.The invention relates to an effect disc rotation system with a base and at least one effect disc coupled to it, which can be rotated about an axis of rotation by means of a drive, the axis of rotation being offset from an optical axis and the effect disc having at least one optical element which is in the optical range Axis can be turned.
Solche Effektscheibenrotationssysteme, auch Gobo-Rotationssysteme genannt, werden vorwiegend in der Bühnenbeleuchtungstechnik eingesetzt. Die Effektscheiben weisen üblicherweise in ihrem äußeren Bereich eine Vielzahl von in Umfangsrichtung nebeneinander liegenden Öffnungen auf, in denen verschiedene optische Elemente angeordnet sind, wie z.B. Farbfilter oder Blendenscheiben. Die Effektscheibe ist um eine Achse drehbar gelagert, wobei der Abstand dieser Achse zur optischen Achse des Effektscheibenrotationssystems gleich ist dem Abstand der Rotationsachse der Effektscheibe zum Mittelpunkt ihrer Öffnungen. Somit kann jedes optische Element der Effektscheibe in die optische Achse hineingedreht werden, so daß ein Lichtstrahl durch das Effektscheibenrotationssystem auf unterschiedliche Weise beeinflußt werden kann. Die Basis dient als Träger für das Effektscheibenrotationssystem und kann beispielsweise eine Montageplatte zur Befestigung des Effektscheibenrotationssystems an einem Scheinwerfer oder einem Gerüst sein. Sie kann aber auch direkter Bestandteil eines Scheinwerfers oder Gerüsts sein.Such effect disc rotation systems, also called gobo rotation systems, are mainly used in stage lighting technology. The effect disks usually have a plurality of circumferentially adjacent openings in their outer area, in which various optical elements are arranged, such as Color filters or aperture discs. The effect disk is rotatably mounted about an axis, the distance of this axis from the optical axis of the effect disk rotation system being equal to the distance from the axis of rotation of the effect disk to the center of its openings. Thus, each optical element of the effect disk can be rotated into the optical axis, so that a light beam can be influenced in different ways by the effect disk rotation system. The base serves as a support for the effect disc rotation system and can, for example, be a mounting plate for fastening the effect disc rotation system to a headlight or a scaffold. However, it can also be a direct component of a headlight or scaffolding.
Es sind eine Vielzahl von Effektscheibenrotationssystemen bekannt. So ist in der US 5,113,332 ein Effektscheibenrotationssystem mit mehreren, in Richtung der optischen Achse hintereinander liegenden, Effektscheiben beschrieben, die um eine gleiche Mittelachse drehbar gelagert sind und in ihrem äußeren Bereich Öffnungen mit unterschiedlichen optischen Elementen zur Erzeugung unterschiedlicher Muster aufweisen. Jede dieser Effektscheiben weist eine Öffnung ohne optisches Element auf. Wird ein optisches Element einer Effektscheibe in den Bereich der optischen Achse eines Lichtstrahls hineingedreht, können die freien Öffnungen der anderen Effektscheiben in den Bereich der optischen Achse hineingeschwenkt werden, so daß ausschließlich ein optisches Element den Lichtstrahl beeinflußt.A large number of effect disk rotation systems are known. No. 5,113,332 describes an effect disk rotation system with a plurality of effect disks lying one behind the other in the direction of the optical axis, which are rotatably mounted about the same central axis and have openings in their outer area with different optical elements for producing different patterns. Each of these effect discs has an opening without an optical element. If an optical element of an effect disc is rotated into the area of the optical axis of a light beam, the free openings of the other effect disks can be pivoted into the area of the optical axis, so that only one optical element influences the light beam.
Darüber hinaus sind die optischen Elemente in der Effektscheibe drehbar gelagert. Sobald sie in den Bereich der optischen Achse hineingedreht werden, können sie über einen Antrieb gedreht werden.In addition, the optical elements are rotatably mounted in the effect disc. As soon as they are rotated into the area of the optical axis, they can be rotated via a drive.
Dieses System weist den Nachteil auf, daß die optischen Elemente erst dann von dem Antrieb gedreht werden können, wenn sie den Bereich der optischen Achse erreicht haben. Somit ist es nicht möglich, das optische Element in einer vorbestimmten Position in den Bereich der optischen Achse eintreten zu lassen. Dies ist aber insbesondere dann von Interesse, wenn mit den optischen Elemente n nicht nur die Farbe, sondern auch die Kontur des Lichtstrahls beeinflußt oder über das optische Element ein Bild projiziert werden soll.This system has the disadvantage that the optical elements can only be rotated by the drive when they have reached the region of the optical axis. It is therefore not possible to allow the optical element to enter the region of the optical axis in a predetermined position. This is of particular interest, however, if not only the color, but also the contour of the light beam is to be influenced with the optical elements n or an image is to be projected via the optical element.
Aus der US 5,537,303 ist ein Effektscheibenrotationssystem bekannt, bei dem dieses Problem nicht existiert. Es weist eine Effektscheibe auf, in deren äußerem Bereich optische Elemente drehbar gelagert sind. Die optischen Elemente sind mit Zahnkränzen versehen, die jeweils in ein um die Mittelachse der Effektscheibe drehbar gelagertes Zahnrad eingreifen. Die Effektscheibe und das Zahnrad können unabhängig voneinander um die gleiche Achse gedreht werden. Beide werden über getrennt voneinander angesteuerte Antriebe rotiert.An effect disk rotation system is known from US Pat. No. 5,537,303 in which this problem does not exist. It has an effect disk, in the outer area of which optical elements are rotatably mounted. The optical elements are provided with toothed rings which each engage in a gearwheel rotatably mounted about the central axis of the effect disk. The effect wheel and the gear wheel can be rotated independently about the same axis. Both are rotated via separately controlled drives.
Diese Konstruktion weist jedoch den Nachteil auf, daß jedes optische Element drehbar gelagert und mit einem Zahnkranz versehen sein muß. Somit ist diese Konstruktion aufwendig und teuer.However, this construction has the disadvantage that each optical element must be rotatably mounted and provided with a ring gear. This construction is therefore complex and expensive.
Der vorliegenden Erfindung liegt demgegenüber die Aufgabe zugrunde, die vorgenannten Nachteile zu vermeiden und ein einfaches und kostengünstiges Effektscheibenrotationssystem bereitzustellen, bei dem mindestens ein optisches Element um seine eigene Achse gedreht sowie in die optische Achse des Effektscheibenrotationssystems hineingeschwenkt werden kann.In contrast, the present invention is based on the object of avoiding the aforementioned disadvantages and of providing a simple and inexpensive effect disk rotation system in which at least one optical element can be rotated about its own axis and pivoted into the optical axis of the effect disk rotation system.
Diese Aufgabe wird bei einer Effektscheibe der eingangs genannten Art dadurch gelöst, daß die Effektscheibe unabhängig von einer Drehung um die Drehachse um die optische Achse drehbar ist. Eine Drehung um die eigene Drehachse bewirkt dabei, daß ein optisches Element, das den Lichtstrahl beeinflussen soll, in den optischen Bereich hinein gedreht wird. Indem die Effektscheibe um die optische Achse drehbar ist, kann das in den Bereich der optischen Achse geschwenkte optische Element um die optische Achse herum und damit - sofern die optischen Achsen des optischen Elements und des Effektscheibenrotationssystems aufeinander liegen - um seine eigene optische Achse gedreht werden.This object is achieved in the case of an effect disk of the type mentioned at the outset in that the effect disk can be rotated about the optical axis independently of a rotation about the axis of rotation. A rotation about its own axis of rotation causes an optical element that is intended to influence the light beam to be rotated into the optical area. Because the effect disk can be rotated about the optical axis, the optical element pivoted into the region of the optical axis can be rotated about the optical axis and thus - provided the optical axes of the optical element and the effect disk rotation system lie on one another - about its own optical axis.
Ein Vorteil dieses erfindungsgemäßen Systems gegenüber dem Stand der Technik besteht darin, daß lediglich die Effektscheibe um jeweils zwei unterschiedliche Achsen antreibbar sein muß. Somit bleibt die Anzahl der beweglichen Teile des Systems immer gleich, unabhängig davon, wieviel optische Elemente sich auf der Effektscheibe befinden.An advantage of this system according to the invention over the prior art is that it is only necessary to be able to drive the effect disk around two different axes. This means that the number of moving parts of the system always remains the same, regardless of how many optical elements are on the effect disc.
Neben dem daraus resultierenden Vorteil einer einfachen Herstellung bei reduzierten Kosten ergibt sich aufgrund der reduzierten Anzahl beweglicher Teile ein weiterer Vorteil hinsichtlich der Störanfälligkeit des Systems.In addition to the resulting advantage of simple manufacture at reduced costs, the reduced number of moving parts results in a further advantage in terms of the system's susceptibility to failure.
Hinzu kommt, daß Art und Größe der in der Effektscheibe verwendbaren optischen Elemente nicht begrenzt sind durch mechanische Elemente wie beispielsweise einen Zahnkranz, der bislang für die Drehung der optischen Elemente um ihre eigene Achse benötigt wurde. Zwangsläufig ergibt sich hieraus der weitere Vorteil, daß die Anzahl der optischen Elemente beliebig wählbar ist.In addition, the type and size of the optical elements that can be used in the effect disk are not limited by mechanical elements such as, for example, a ring gear that was previously required for the rotation of the optical elements about their own axis. This inevitably gives rise to the further advantage that the number of optical elements can be selected as desired.
Schließlich ist es möglich, ein optisches Element um einen bestimmten Radius dezentriert um die optische Achse des Effektscheibenrotationssystems rotieren zu lassen, wenn nämlich der Abstand der Drehachse der Effektscheibe zur optischen Achse um eben diesen Radius nicht gleich dem Abstand der Drehachse der Effektscheibe zum Mittelpunkt der Öffnung für das optische Element bzw. zur optischen Achse des optischen Elements ist.Finally, it is possible to have an optical element rotated decentrally by a certain radius around the optical axis of the effect disc rotation system, namely if the distance between the axis of rotation of the effect disc and the optical axis by precisely this radius is not equal to the distance between the axis of rotation of the effect disc and the center of the opening for the optical element or to the optical axis of the optical element.
In einer einfachen Ausgestaltung der Erfindung ist die Drehachse der Effektscheibe ihre Mittelachse, so daß bei einer kreisrunden Effektscheibe alle in Umfangsrichtung mit gleichem Abstand zur Mittelachse nebeneinander angeordneten optischen Elemente in den gleichen Bereich der optischen Achse des Effektscheibenrotationssystems hineingeschwenkt werden können. In einer besonderen Ausführungsform weist das Effektscheibenrotationssystem eine Wälzlagerung mit mindestens zwei Lagerschalen auf, die relativ zueinander um die optische Achse herum drehbar sind, wobei eine die Effektscheibe tragende Welle über ein Verbindungselement mit der einen Lagerschale verbunden ist und die Welle an der anderen Lagerschale abrollen kann.In a simple embodiment of the invention, the axis of rotation of the effect disc is its central axis, so that in the case of a circular effect disc, all optical elements arranged next to one another in the circumferential direction with the same distance from the central axis can be pivoted into the same region of the optical axis of the effect disc rotation system. In a special embodiment, the effect disc rotation system has a roller bearing with at least two bearing shells which can be rotated relative to one another about the optical axis, a shaft carrying the effect disc being connected to the one bearing shell via a connecting element and the shaft being able to roll on the other bearing shell .
Wird die mit der Welle verbundene Lagerschale angetrieben, wird hierdurch die Effektscheibe um die optische Achse des Effektscheibenrotationssystems gedreht. Gleichzeitig wird die Effektscheibe um ihre Mittelachse herum dadurch gedreht, daß die mit ihr verbundene Welle an der anderen Lagerschale des Wälzlagers abrollt. Dieser Drehbewegung kann dadurch entgegengewirkt werden, wenn beide Lagerschalen fest miteinander verbunden oder mit gleicher Winkelgeschwindigkeit angetrieben werden, so daß die Lagerschalen keine Relativbewegung zueinander aufweisen. Wird die andere Lagerschale in entgegengesetzter Richtung angetrieben, wird die durch das Abrollen bewirkte Winkelgeschwindigkeit weiter erhöht.If the bearing shell connected to the shaft is driven, the effect disk is hereby rotated about the optical axis of the effect disk rotation system. At the same time, the effect disk is rotated around its central axis in that the shaft connected to it rolls on the other bearing shell of the roller bearing. This rotary movement can be counteracted if both bearing shells are firmly connected to one another or are driven at the same angular velocity, so that the bearing shells have no relative movement to one another. If the other bearing shell is driven in the opposite direction, the angular velocity caused by the rolling is further increased.
Somit wird bei dieser Ausführungsform die relative Bewegung zwischen den Lagerschalen der Wälzlagerung ausgenutzt.Thus, in this embodiment, the relative movement between the bearing shells of the rolling bearing is used.
Es sind eine Vielzahl von konstruktiven Ausführungsformen denkbar, wobei die beiden Lagerschalen der Wälzlagerung Bestandteil eines Wälzlagers oder jede Bestandteil jeweils eines Wälzlagers sein kann.A large number of constructive embodiments are conceivable, wherein the two bearing shells of the rolling bearing can be part of a rolling bearing or each part of a rolling bearing.
Bei einer möglichen Ausführungsform ist ein feststehender, um die optische Achse des Systems herum angeordneter Ring vorgesehen, an dessen Innenseite ein inneres Wälzlager und an dessen Außenseite ein äußeres Wälzlager angeordnet ist, wobei dann die äußere Lagerschale des äußeren Wälzlagers sowie die innere Lagerschale des inneren Wälzlagers frei beweglich sind.In one possible embodiment, a fixed ring is provided, which is arranged around the optical axis of the system, on the inside of which there is an inner roller bearing and on the outside of which there is an outer roller bearing, the outer bearing shell of the outer roller bearing and the inner bearing shell of the inner roller bearing then are free to move.
Das gleiche Konstruktionsprinzip wird erreicht, wenn die äußere Lagerschale des inneren Wälzlagers gemeinsam mit der inneren Lagerschale des äußeren Wälzlagers und dem um die Achse des optischen Systems herum angeordneten Ring einstückig ausgebildet und fest mit der Basis verbunden ist.The same design principle is achieved if the outer bearing shell of the inner roller bearing is formed in one piece together with the inner bearing shell of the outer roller bearing and the ring arranged around the axis of the optical system and is fixedly connected to the base.
Bei einer anderen möglichen Ausführungsform ist es denkbar, daß zwei Wälzlager vorgesehen sind, wobei jedes Wälzlager fest an einer eigenen Basis befestigt ist. In einer bevorzugten einfachen Konstruktion wird die Wälzlagerung durch ein erstes Wälzlager mit mindestens einer ersten Lagerschale und einer zweiten Lagerschale sowie ein zweites Wälzlager mit mindestens einer dritten und einer vierten Lagerschale ausgebildet, wobei beide Wälzlager um die optische Achse herum angeordnet sind, die Welle mit der ersten Lagerschale über das Verbindungselement verbunden ist und an der zweiten Lagerschale abrollen kann, und wobei die erste Lagerschale mit der vierten Lagerschale fest verbunden sowie die dritte Lagerschale an der Basis befestigt ist.In another possible embodiment, it is conceivable that two roller bearings are provided, each roller bearing being fixedly attached to its own base. In a preferred simple construction, the roller bearing is formed by a first roller bearing with at least a first bearing shell and a second bearing shell and a second roller bearing with at least a third and a fourth bearing shell, both roller bearings being arranged around the optical axis, the shaft with the the first bearing shell is connected via the connecting element and can roll on the second bearing shell, and wherein the first bearing shell is firmly connected to the fourth bearing shell and the third bearing shell is fastened to the base.
In einer besonders bevorzugten Ausführungsform sind die zwei relativ zueinander und um die optische Achse herum drehbaren Lagerschalen über jeweils einen Antrieb drehbar, so daß beide Lagerschalen völlig unabhängig voneinander drehbar sind.In a particularly preferred embodiment, the two bearing shells which are rotatable relative to one another and around the optical axis can each be rotated via a drive, so that both bearing shells can be rotated completely independently of one another.
Es ist aber grundsätzlich auch möglich, lediglich einen Antrieb vorzusehen. Dieser Antrieb kann beispielsweise die mit dem Verbindungselement verbundene Lagerschale antreiben, so daß sich die Effektscheibe um die Achse des optischen Systems drehen kann. Soll lediglich ein in den Bereich der optischen Achse hineingeschwenktes optisches Element um die optische Achse herum gedreht werden, muß die Lagerschale, auf der die Welle abrollt, mit der angetriebenen Lagerschale über einen Mitnehmer verbunden werden, so daß eine Relativbewegung der beiden Lagerschalen unterbunden wird. Soll aber das optische Element gewechselt werden, muß die Lagerschale, auf der die Welle abrollt, festgehalten werden, so daß sich die Effektscheibe aufgrund der Relativbewegung zwischen den beiden Lagerschalen um die eigene Drehachse dreht.In principle, however, it is also possible to provide only one drive. This drive can, for example, drive the bearing shell connected to the connecting element, so that the effect disk can rotate about the axis of the optical system. If only an optical element pivoted into the region of the optical axis is to be rotated around the optical axis, the bearing shell on which the shaft rolls must be connected to the driven bearing shell via a driver, so that a relative movement of the two bearing shells is prevented. However, if the optical element is to be changed, the bearing shell on which the shaft rolls must be held so that the effect disk rotates about its own axis of rotation due to the relative movement between the two bearing shells.
Bevorzugt haben die Antriebe der Lagerschalen das gleiche Übersetzungsverhältnis. Somit ist gewährleistet, daß bei gleicher Drehzahl der Antriebe die Lagerschalen mit der gleichen Winkelgeschwindigkeit rotieren, so daß in diesem Fall genau ein optische Element im Bereich der optischen Achse um diese herum rotiert wird.The drives of the bearing shells preferably have the same transmission ratio. This ensures that, at the same speed of the drives, the bearing shells rotate at the same angular speed, so that in this case exactly one optical element is rotated around the optical axis in the region thereof.
Im weiteren ist es von Vorteil, wenn die Lagerschalen ebenso wie die Welle über ein Zahnradgetriebe angetrieben werden. Durch die formschlüssige Kraftübertragung bei Zahnrädern kann zu jeder Zeit eine genau definierte Position der Effektscheibe vorgegeben werden, wenn zum Antrieb beispielsweise Steppermotoren eingesetzt werden. Dennoch ist es auch möglich, den Antrieb auf andere Weise, beispielsweise über Reibräder zu realisieren oder gar als Riemenantrieb auszubilden. In einer anderen Ausgestaltung kann die Effektscheibe um die optische Achse herum dadurch positioniert werden, daß das Verbindungselement ringscheibenförmig ausgebildet und mit einem Zahnkranz versehen ist, in das ein Antrieb eingreift. Somit erfüllt die das Verbindungselement tragende Lagerschale nur noch die Funktion der Lagerung des Verbindungselements und nicht mehr die Funktion der Übertragung der Antriebskräfte bzw. -momente.Furthermore, it is advantageous if the bearing shells as well as the shaft are driven via a gear transmission. Due to the positive power transmission in the case of gear wheels, a precisely defined position of the effect wheel can be specified at any time if stepper motors are used for the drive. Nevertheless, it is also possible to implement the drive in another way, for example using friction wheels, or even to design it as a belt drive. In another embodiment, the effect disk can be positioned around the optical axis in that the connecting element is designed in the form of an annular disk and is provided with a ring gear in which a drive engages. The bearing shell carrying the connecting element thus only fulfills the function of supporting the connecting element and no longer the function of transmitting the driving forces or moments.
Ein anderer besonderer Vorteil des erfindungsgemäßen Effektscheibenrotationssystems ist, daß die Position der Effektscheibe gegenüber der optischen Achse nicht genau festgelegt sein muß, da sie ohnehin um die optische Achse rotierbar ist. Insofern kann das Verbindungselement einen Hebelarm aufweisen, wobei der Hebelarm zwischen der den Hebelarm tragenden Lagerschale und der Welle ein Gelenk aufweist oder an dieser Lagerschale gelenkig gelagert ist und durch einen Antrieb um das Gelenk verschwenkbar ist.Another particular advantage of the effect disc rotation system according to the invention is that the position of the effect disc with respect to the optical axis does not have to be precisely defined, since it can be rotated about the optical axis anyway. In this respect, the connecting element can have a lever arm, wherein the lever arm has a joint between the bearing shell supporting the lever arm and the shaft or is articulated on this bearing shell and can be pivoted about the joint by a drive.
Hierdurch kann der Hebel beispielsweise in der von der optischen Achse und einem zur optischen Achse radial verlaufenden Hebelarm aufgespannten Ebene verschwenkt werden, wodurch die Lage der Effektscheibe und damit die Lage der optischen Elemente zur optischen Achse verändert wird. Hierdurch können bei geeigneten optischen Elementen wie beispielsweise Prismen zusätzliche optische Effekte erzielt werden.As a result, the lever can be pivoted, for example, in the plane spanned by the optical axis and a lever arm extending radially to the optical axis, as a result of which the position of the effect disk and thus the position of the optical elements relative to the optical axis is changed. As a result, additional optical effects can be achieved with suitable optical elements such as prisms.
Auch kann ein solcher Hebelarm teleskopartig ausgebildet und über einen Antrieb in seiner Länge veränderbar sein. Über diesen Antrieb kann beispielsweise bestimmt werden, ob ein optisches Element dezentriert oder zentriert um die optische Achse des Effektscheibenrotationssystems rotiert wird.Such a lever arm can also be designed telescopically and its length can be changed via a drive. This drive can be used, for example, to determine whether an optical element is rotated out of center or centered about the optical axis of the effect disk rotation system.
In einer konkreten bevorzugten Ausführungsform sind die erste und die zweite Lagerschale des ersten Wälzlagers ein Innenring und ein Außenring, wobei der Innenring des ersten Wälzlagers drehbar mit der Basis verbunden ist, das Verbindungselement an dem Innenring angeordnet ist und die Welle über den Außenring des ersten Wälzlagers abrollen kann.In a specific preferred embodiment, the first and the second bearing shell of the first rolling bearing are an inner ring and an outer ring, the inner ring of the first rolling bearing being rotatably connected to the base, the connecting element being arranged on the inner ring and the shaft via the outer ring of the first rolling bearing can roll off.
Wird der Innenring des Wälzlagers angetrieben, wird hierdurch die Effektscheibe um die optische Achse des Effektscheibenrotationssystems gedreht. Gleichzeitig wird die Effektscheibe um ihre Mittelachse herum dadurch gedreht, daß die mit ihr verbundene Welle auf dem Außenring des Wälzlagers abrollt. Dieser Drehbewegung kann dadurch entgegengewirkt werden, daß der Außenring durch den ihm zugeordneten Antrieb in gleicher Richtung bewegt wird wie der Innenring. Wird der Außenring in entgegengesetzter Richtung angetrieben, wird die durch das Abrollen bewirkte Winkelgeschwindigkeit weiter erhöht.If the inner ring of the roller bearing is driven, the effect disk is thereby rotated about the optical axis of the effect disk rotation system. At the same time, the effect disk is rotated around its central axis in that the one connected to it The shaft rolls on the outer ring of the rolling bearing. This rotary movement can be counteracted in that the outer ring is moved in the same direction as the inner ring by the drive assigned to it. If the outer ring is driven in the opposite direction, the angular velocity caused by the rolling is further increased.
Wird der Innenring des Wälzlagers nicht bewegt, aber der Außenring angetrieben, rotiert die Effektscheibe, so daß hierüber ein gewünschtes optisches Element in den Bereich der optischen Achse gebracht werden kann.If the inner ring of the roller bearing is not moved, but the outer ring is driven, the effect disk rotates so that a desired optical element can be brought into the area of the optical axis.
Die die Effektscheibe tragende Welle rollt insofern bevorzugt auf dem Außenring ab, als insofern der mögliche größte Durchlichtbereich des Effektscheibenrotationssystems hierdurch nicht unnötig eingeschränkt wird und das oder die verwendeten Wälzlager einen vergleichsweise geringeren Durchmesser aufweisen können, als wenn die Welle am Innenring des Wälzlagers abrollen würde.The shaft carrying the effect disk preferably rolls on the outer ring insofar as the possible largest transmitted light area of the effect disk rotation system is not unnecessarily restricted thereby and the roller bearing or bearings used can have a comparatively smaller diameter than if the shaft would roll on the inner ring of the roller bearing.
Die Erfindung wird im folgenden anhand der Beschreibung eines bevorzugten Ausführungsbeispiels näher erläutert. Es zeigenThe invention is explained in more detail below on the basis of the description of a preferred exemplary embodiment. Show it
Figur 1 einen Querschnitt durch eine bevorzugte Ausführungsform der Erfindung sowie Figur 2 eine Frontansicht dieser Ausführungsform.Figure 1 shows a cross section through a preferred embodiment of the invention and Figure 2 is a front view of this embodiment.
Figur 1 zeigt ein Effektscheibenrotationssystems mit einer Basis 1, die im Bereich einer optischen Achse 2 eine Öffnung 3 für einen Lichtstrahl aufweist. Mit der Basis 1 ist ein erstes Wälzlager 4 mit einem Innenring 5 und einem Außenring 6 über ein zweites Wälzlager 7 mit einem Innenring 8 und einem Außenring 9 verbunden. Der Innenring 8 des zweiten Wälzlagers 7 wird über eine Presspassung von einem Verbindungsring 10 an der Basis 1 gehalten.FIG. 1 shows an effect disk rotation system with a base 1 which has an opening 3 for a light beam in the region of an optical axis 2. A first roller bearing 4 with an inner ring 5 and an outer ring 6 is connected to the base 1 via a second roller bearing 7 with an inner ring 8 and an outer ring 9. The inner ring 8 of the second roller bearing 7 is held by a connecting ring 10 on the base 1 via an interference fit.
Der Außenring 9 des zweiten Wälzlagers 7 ist über eine in Achsrichtung konisch zulaufende Ringscheibe 11 mit dem Innenring 5 des ersten Wälzlagers 4 verbunden. Auch hier erfolgt die Verbindung jeweils über Preßpassungen. Auf der der Basis 1 abgewandten Seite des ersten Wälzlagers 4 greift ein zweiter Verbindungsring 12 über eine Preßpassung in den Innenring 5 des Wälzlagers 4 ein. Dieser Verbindungsring ist fest mit einem ringscheibenförmig ausgebildeten Verbindungselement 13 verbunden. Das Verbindungselement 13 weist eine zur optischen Achse konzentrische Öffnung zum Durchlaß eines Lichtstrahls auf und ragt radial vollständig über das erste Wälzlager 4 hinaus.The outer ring 9 of the second roller bearing 7 is connected to the inner ring 5 of the first roller bearing 4 via an annular disc 11 which tapers conically in the axial direction. Here, too, the connection is made using press fits. On the side of the first roller bearing 4 facing away from the base 1, a second connecting ring 12 engages in the inner ring 5 of the roller bearing 4 via an interference fit. This connecting ring is firmly connected to an annular disk-shaped connecting element 13. The connecting element 13 has an opening concentric to the optical axis to pass a light beam and projects radially completely beyond the first roller bearing 4.
In dem radial über das erste Wälzlager 4 hinausragenden Bereich des Verbindungselements 13 ist eine Welle 14 gelagert, deren Achse 15 parallel zur optischen Achse 2 des Effektscheibenrotationssystems angeordnet ist. Die Welle 14 trägt auf der der Basis 1 abgewandten Seite des Verbindungselements 13 eine Effektscheibe 16. Diese Effektscheibe 16 weist, wie in Figur 2 zu sehen ist, eine Vielzahl von Öffnungen 17 auf, in denen - hier nicht dargestellte - optische Elemente angeordnet sind.In the region of the connecting element 13 projecting radially beyond the first roller bearing 4, a shaft 14 is mounted, the axis 15 of which is arranged parallel to the optical axis 2 of the effect disc rotation system. The shaft 14 carries an effect disk 16 on the side of the connecting element 13 facing away from the base 1. As can be seen in FIG. 2, this effect disk 16 has a multiplicity of openings 17 in which optical elements are arranged (not shown here).
Die Welle 14 weist an ihrem anderen Ende ein Zahnrad 18 auf, das in einen Zahnkranz 19 eingreift, der den Außenring 6 des ersten Wälzlagers 4 umfaßt. In diesen Zahnkranz 19 greift auf der anderen Seite des ersten Wälzlagers 4 das Zahnrad 20 eines - hier nicht vollständig dargestellten - ersten Antriebes ein.The shaft 14 has at its other end a gear 18 which engages in a ring gear 19 which comprises the outer ring 6 of the first roller bearing 4. On the other side of the first roller bearing 4, the gearwheel 20 of a first drive, which is not shown completely, engages in this ring gear 19.
Auch der Außenring 9 des zweiten Wälzlagers 7 ist von einem Zahnkranz 21 umfaßt. In diesen Zahnkranz 21 greift ein Zahnrad 22 eines - hier ebenso nicht vollständig dargestellten - zweiten Antriebes ein.The outer ring 9 of the second roller bearing 7 is also surrounded by a ring gear 21. A toothed wheel 22 of a second drive, which is also not shown here, engages in this ring gear 21.
Wird lediglich der erste Antrieb betätigt, wird der Außenring 6 des Wälzlagers 4 um die optische Achse 2 gedreht, wobei der Innenring 5 des ersten Wälzlagers 4 stehen bleibt. Dadurch kann ein gewünschtes optisches Element in den Bereich der optischen Achse 2 hineingedreht werden. Es ist aber auch möglich, die Effektscheibe 16 dauerhaft zu rotieren, um über die Abfolge verschiedener durch die optischen Elemente generierter „Bilder" besondere Lichteffekte zu erzielen. So können einander benachbarte optische Elemente als Musterblenden ausgeführt sein, wobei die Muster leicht variieren, so daß bei dem Durchlauf verschiedener aufeinander folgender Musterblenden ein bewegtes Bild erzeugt werden kann.If only the first drive is actuated, the outer ring 6 of the roller bearing 4 is rotated about the optical axis 2, the inner ring 5 of the first roller bearing 4 remaining. As a result, a desired optical element can be screwed into the area of the optical axis 2. However, it is also possible to rotate the effect disk 16 permanently in order to achieve special lighting effects via the sequence of different “images” generated by the optical elements. For example, adjacent optical elements can be designed as pattern diaphragms, the patterns varying slightly so that a moving image can be generated when different successive pattern apertures are run through.
Wird nur der zweite Antrieb eingesetzt, wird die Effektscheibe 16 um die optische Achse 2 des Effektscheibenrotationssystems gedreht. Aufgrund der Relativbewegung zwischen Innenring 5 und Außenring 6 des ersten Wälzlagers 4 wird gleichzeitig die Effektscheibe 16 um ihre Mittelachse 15 herum in entgegengesetzter Richtung gedreht. Dies hat zur Folge, daß die optischen Elemente entsprechend der Winkelgeschwindigkeit der Effektscheibe 16 um ihre Mittelachse 15 herum über den Bereich der optischen Achse 2 hinwegbewegt werden. Will man diese Drehbewegung der Effekt- Scheibe 16 derart kompensieren, daß ein optisches Element im Bereich der optischen Achse 2 verbleibt, muß der Außenring 6 des ersten Wälzlagers 4 mit der gleichen Winkelgeschwindigkeit rotieren wie der Innenring 5, so daß eine Relativbewegung unterbleibt.If only the second drive is used, the effect disk 16 is rotated about the optical axis 2 of the effect disk rotation system. Due to the relative movement between the inner ring 5 and outer ring 6 of the first roller bearing 4, the effect disk 16 is simultaneously rotated about its central axis 15 in the opposite direction. The result of this is that the optical elements are moved over the region of the optical axis 2 in accordance with the angular velocity of the effect disk 16 about its central axis 15. If you want this rotation of the effect To compensate disc 16 in such a way that an optical element remains in the region of the optical axis 2, the outer ring 6 of the first roller bearing 4 must rotate at the same angular velocity as the inner ring 5, so that relative movement does not occur.
Wird der erste Antrieb zur Erzeugung eines bewegten Bildes eingesetzt, kann die Bewegungsrichtung des Bildes durch zusätzlichen Einsatz des zweiten Antriebes geändert werden. Wird beispielsweise ein Bild von vorbeiziehender Wolken erzeugt, kann auf diese Weise die Zugrichtung der Wolken von der Horizontalen in die Vertikale oder auch in jede andere Richtung verändert werden.If the first drive is used to generate a moving image, the direction of movement of the image can be changed by additionally using the second drive. If, for example, an image of passing clouds is generated, the direction of the clouds from horizontal to vertical or in any other direction can be changed in this way.
Um die Steuerung der Antriebe zu vereinfachen, ist es hierbei von Vorteil, wenn das Übersetzungsverhältnis vom Zahnrad 20 des ersten Antriebes zum Zahnkranz 19 am Außenring 6 des ersten Wälzlagers 4 gleich ist zu dem Übersetzungsverhältnis vom Zahnrad 22 des zweiten Antriebes zum Zahnkranz 21 am Außenring 9 des zweiten Wälzlagers 7. In order to simplify the control of the drives, it is advantageous if the gear ratio of the gear 20 of the first drive to the ring gear 19 on the outer ring 6 of the first roller bearing 4 is the same as the gear ratio of the gear 22 of the second drive to the ring gear 21 on the outer ring 9 of the second rolling bearing 7.
BezugszeichenlisteReference list
BasisBase
Achseaxis
Öffnungopening
Wälzlagerroller bearing
InnenringInner ring
AußenringOuter ring
Wälzlagerroller bearing
InnenringInner ring
AußenringOuter ring
VerbindungsringConnecting ring
RingscheibeWasher
VerbindungsringConnecting ring
•Verbindungselement • connecting element
Wellewave
MittelachseCentral axis
EffektscheibeEffect disc
Öffnung für optisches ElementOpening for optical element
Zahnradgear
ZahnkranzSprocket
Zahnradgear
ZahnkranzSprocket
Zahnrad gear

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Effektscheibenrotationssystem mit einer Basis (1) und mindestens einer damit gekoppelten Effektscheibe (16), die mittels eines Antriebs um eine Drehachse drehbar ist, wobei die Drehachse zu einer optischen Achse (2) versetzt angeordnet ist und die Effektscheibe (16) mindestens ein optisches Element aufweist, das in den Bereich der optischen Achse (2) hineingedreht werden kann, dadurch gekennzeichnet, daß die Effektscheibe (16) unabhängig von einer Drehung um die Drehachse auch um die optische Achse (2) drehbar ist.1. Effect disc rotation system with a base (1) and at least one effect disc (16) coupled to it, which can be rotated about an axis of rotation by means of a drive, the axis of rotation being offset from an optical axis (2) and the effect disc (16) at least one Optical element which can be turned into the region of the optical axis (2), characterized in that the effect disc (16) can also be rotated about the optical axis (2) independently of a rotation about the axis of rotation.
2. Effektscheibenrotationssystem nach Anspruch 1, dadurch gekennzeichnet, daß die Drehachse die Mittelachse (15) der Effektscheibe (16) ist.2. Effect disc rotation system according to claim 1, characterized in that the axis of rotation is the central axis (15) of the effect disc (16).
3- Effektscheibenrotationssystem nach Anspruch 1 oder 2, gekennzeichnet durch eine Wälzlagerung mit mindestens zwei Lagerschalen, die relativ zueinander und um die optische Achse (2) herum drehbar sind, wobei eine die Effektscheibe (16) tragende Welle (14) über ein Verbindungselement (13) mit der einen Lagerschale verbunden ist und die Welle (14) an der anderen Lagerschale abrollen kann.3- effect disc rotation system according to claim 1 or 2, characterized by a roller bearing with at least two bearing shells which are rotatable relative to each other and around the optical axis (2), wherein the effect disc (16) supporting shaft (14) via a connecting element (13 ) is connected to one bearing shell and the shaft (14) can roll on the other bearing shell.
4. Effektscheibenrotationssystem nach Anspruch 3, dadurch gekennzeichnet, daß die Wälzlagerung ein erstes Wälzlager mit mindestens einer ersten Lagerschale und einer zweiten Lagerschale sowie ein zweites Wälzlager (7) mit mindestens einer dritten und einer vierten Lagerschale aufweist, wobei beide Wälzlager um die optische Achse herum angeordnet sind, die Welle (14) mit der ersten Lagerschale über das Verbindungselement (13) verbunden ist und an der zweiten Lagerschale abrollen kann, und wobei die erste Lagerschale mit der vierten Lagerschale fest verbunden sowie die dritte Lagerschale an der Basis befestigt ist.4. Effect disc rotation system according to claim 3, characterized in that the roller bearing has a first roller bearing with at least a first bearing shell and a second bearing shell and a second roller bearing (7) with at least a third and a fourth bearing shell, both roller bearings around the optical axis are arranged, the shaft (14) is connected to the first bearing shell via the connecting element (13) and can roll on the second bearing shell, and the first bearing shell is firmly connected to the fourth bearing shell and the third bearing shell is fastened to the base.
5. Effektscheibenrotationssystem nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß die zwei relativ zueinander und um die optische Achse herum drehbaren Lagerschalen über jeweils einen Antrieb drehbar sind. 5. Effect disc rotation system according to claim 3 or 4, characterized in that the two relative to each other and around the optical axis rotatable bearing shells are each rotatable via a drive.
6. Effektscheibenrotationssystem nach Anspruch 5, dadurch gekennzeichnet, daß die Antriebe der Lagerschalen das gleiche Übersetzungsverhältnis haben.6. Effect disc rotation system according to claim 5, characterized in that the drives of the bearing shells have the same transmission ratio.
7. Effektscheibenrotationssystem nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß die Lagerschalen ebenso wie die Welle (14) über ein Zahnradgetriebe angetrieben werden.7. Effect disc rotation system according to claim 5 or 6, characterized in that the bearing shells as well as the shaft (14) are driven via a gear transmission.
8. Effektscheibenrotationssystem nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß das Verbindungselement (13) um die optische Achse herum ringscheibenförmig ausgebildet und mit einem Zahnkranz versehen ist, in das ein Antrieb eingreift.8. Effect disc rotation system according to one of claims 5 to 7, characterized in that the connecting element (13) around the optical axis is formed in the shape of an annular disk and is provided with a ring gear in which a drive engages.
9. Effektscheibenrotationssystem nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, daß das Verbindungselement einen Hebelarm aufweist, wobei der Hebelarm zwischen der den Hebelarm tragenden Lagerschale und der Welle (14) ein Gelenk aufweist oder an dieser Lagerschale gelenkig gelagert ist und durch einen Antrieb um das Gelenk verschwenkbar ist.9. Effect disc rotation system according to one of claims 5 to 8, characterized in that the connecting element has a lever arm, wherein the lever arm between the bearing arm bearing the lever arm and the shaft (14) has a joint or is articulated on this bearing shell and by a drive is pivotable about the joint.
10. Effektscheibenrotationssystem nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, daß das Verbindungselement mit einem teleskopartigen Hebelarm ausgebildet ist und über einen Antrieb in seiner Länge veränderbar ist.10. Effect disc rotation system according to one of claims 5 to 9, characterized in that the connecting element is formed with a telescopic lever arm and its length can be changed via a drive.
11. Effektscheibenrotationssystem nach einem der Ansprüche 3 bis 10, dadurch gekennzeichnet, daß die erste und die zweite Lagerschale des ersten Wälzlagers (4) ein Innenring (5) und ein Außenring (6) sind, daß der Innenring (5) des ersten Wälzlagers (4) drehbar mit der Basis (1) verbunden ist, daß das Verbindungselement (13) an dem Innenring (5) angeordnet ist und daß die Welle (14) über den Außenring (6) des ersten Wälzlagers (4) abrollen kann.11. Effect disc rotation system according to one of claims 3 to 10, characterized in that the first and the second bearing shell of the first roller bearing (4) are an inner ring (5) and an outer ring (6), that the inner ring (5) of the first roller bearing ( 4) is rotatably connected to the base (1), that the connecting element (13) is arranged on the inner ring (5) and that the shaft (14) can roll over the outer ring (6) of the first roller bearing (4).
12. Effektscheibenrotationssystem nach Anspruch 11, dadurch gekennzeichnet, daß die dritte und vierte Lagerschale des zweiten Wälzlagers (7) ein Innenring (8) und ein Außenring (9) sind, wobei der Innenring (8) fest mit der Basis (1) verbunden ist und der Außenring (9) mit dem Innenring (5) des ersten Wälzlagers (4) fest verbunden ist. 12. Effect disc rotation system according to claim 11, characterized in that the third and fourth bearing shell of the second rolling bearing (7) are an inner ring (8) and an outer ring (9), the inner ring (8) being fixedly connected to the base (1) and the outer ring (9) is firmly connected to the inner ring (5) of the first roller bearing (4).
EP99960689A 1998-07-10 1999-07-10 Gobo rotation system Expired - Lifetime EP1097340B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19831027A DE19831027A1 (en) 1998-07-10 1998-07-10 Effect disc rotation system
DE19831027 1998-07-10
PCT/DE1999/002120 WO2000003176A1 (en) 1998-07-10 1999-07-10 Gobo rotation system

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EP1097340A1 true EP1097340A1 (en) 2001-05-09
EP1097340B1 EP1097340B1 (en) 2003-04-09

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Application Number Title Priority Date Filing Date
EP99960689A Expired - Lifetime EP1097340B1 (en) 1998-07-10 1999-07-10 Gobo rotation system

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US (1) US6386737B1 (en)
EP (1) EP1097340B1 (en)
AT (1) ATE237099T1 (en)
AU (1) AU5966299A (en)
DE (3) DE19831027A1 (en)
WO (1) WO2000003176A1 (en)

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Also Published As

Publication number Publication date
EP1097340B1 (en) 2003-04-09
US6386737B1 (en) 2002-05-14
DE59904971D1 (en) 2003-05-15
ATE237099T1 (en) 2003-04-15
WO2000003176A1 (en) 2000-01-20
DE19831027A1 (en) 2000-01-27
AU5966299A (en) 2000-02-01
DE29911767U1 (en) 2000-03-02

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