[go: up one dir, main page]

EP1241399A2 - Optical system for stepped lens projector - Google Patents

Optical system for stepped lens projector Download PDF

Info

Publication number
EP1241399A2
EP1241399A2 EP02003626A EP02003626A EP1241399A2 EP 1241399 A2 EP1241399 A2 EP 1241399A2 EP 02003626 A EP02003626 A EP 02003626A EP 02003626 A EP02003626 A EP 02003626A EP 1241399 A2 EP1241399 A2 EP 1241399A2
Authority
EP
European Patent Office
Prior art keywords
reflector
optical system
lens
lamp
light
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
EP02003626A
Other languages
German (de)
French (fr)
Other versions
EP1241399B1 (en
EP1241399A3 (en
Inventor
Rüdiger Kittelmann
Harry Wagener
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.)
Auer Lighting GmbH
Original Assignee
Schott AG
Carl Zeiss AG
Schott Glaswerke AG
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 Schott AG, Carl Zeiss AG, Schott Glaswerke AG filed Critical Schott AG
Publication of EP1241399A2 publication Critical patent/EP1241399A2/en
Publication of EP1241399A3 publication Critical patent/EP1241399A3/en
Application granted granted Critical
Publication of EP1241399B1 publication Critical patent/EP1241399B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • 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 optical system for stepped lens headlights with a ellipsoidal reflector, a lamp and at least one step lens.
  • the parts relevant to lighting technology in conventional optical systems for Step lens headlights are lamp, step lens (Fresnel lens) and spherical Auxiliary reflector.
  • the lamp filament is located essentially unchangeable in the center of the sphere of the spherical auxiliary reflector. Thereby part of the light emitted by the lamp is reflected back into it and supports the light emission in the front half space. This after light directed at the front is focused by the step lens.
  • the degree of light beam depends on the distance between the step lens and the lamp. If the lamp filament is at the focal point of the stepped lens, it results the closest beam of light. This creates a quasi-parallel beam path, also called spot. By shortening the distance between the stepped lens and the lamp becomes the opening angle of the emerging Light beam steadily enlarged. This creates a divergent beam path, also called flood.
  • a disadvantage of such headlights is the poor light yield in particular in the spot position, since there is only a relatively small solid angle range the lamp is captured by the step lens. It also has an effect disadvantageous from the fact that the light reflected by the spherical reflector a large part hits the lamp filament itself, is absorbed there and the Lamp filament additionally heated.
  • the object of the invention is to provide an optical system for stepped lens headlights with an improved light efficiency especially in spot, but also in the flood position while maintaining the uniformity of the illuminance to be provided in the light field.
  • the task is solved by an optical system for stepped lens headlights with an ellipsoidal reflector, a lamp and at least one Step lens, the distance between the step lens and reflector to the Distance between lamp and reflector according to the one to be set Opening angle of the light beam emerging from the headlight in one defined dependency.
  • an ellipsoidal reflector with a large aperture is provided.
  • the spot position is set by the lamp filament being in the reflector side Focus of the ellipsoid is located. That reflected by the reflector Light is almost completely at the focal point of the ellipsoid, which is remote from the reflector united.
  • the lamp filament located in the focal point on the reflector side is shown in the focal point of the ellipsoid far from the reflector. The reflected light essentially does not hit the lamp filament.
  • the focal point of the stepped lens coincides with the focal point of the ellipsoid.
  • the light reflected by the reflector is almost entirely from the step lens captured and emitted to the front as a narrow spot light beam.
  • the light output is therefore considerably larger than with a conventional stepped lens headlight.
  • the opening angle of the light beam emerging from the step lens can be enlarged almost arbitrarily by the lamp position in relation to the Reflector on the one hand and the distance of the stepped lens to the reflector on the other is changed in a suitable manner. So that the good properties more conventional Step lens headlights in terms of the uniformity of the Illuminance must be maintained, these changes in distance through an appropriately chosen forced coupling.
  • the ellipsoid reflector consists of a metallic or transparent material. To be favoured Glass and polymeric materials used. To make a reflective Surface becomes one of the two surfaces of the reflector with a System of thin layers. This advantageously makes them visible Radiation components are reflected and the invisible components, in particular the heat radiation, let through.
  • a preferred embodiment of the invention is an optical system for Step lens headlight, the light reflecting surface of the reflector is structured to diffuse light and none, one or two surfaces of the Step lens are structured to scatter light.
  • An alternative preferred embodiment of the invention is an optical one System for stepped lens headlights, with at least one of the surfaces the step lens is structured to scatter light and the light reflecting surface of the reflector is not structured to scatter light.
  • the optical system in headlights intended for film, stage, studio and photography.
  • Fig. 1 shows the optical system according to the invention for stepped lens headlights in the spot position.
  • the optical system contains an ellipsoidal reflector (1), a lamp (2) and a step lens (3).
  • the light beam (4) emerging from the headlight is indicated schematically.
  • the distances (a) between the stepped lens (3) and reflector (1) and (b) between the lamp (2) and reflector (1) are shown.
  • the spot position is set in such a way that the lamp filament (2) is in the focal point (F1) of the ellipsoid (1) on the reflector side.
  • the light reflected by the reflector (1) is almost completely combined in the focal point (F2) of the ellipsoid (1) remote from the reflector.
  • the focal point of the stepped lens (F3) coincides with the focal point of the ellipsoid (F2).
  • the lamp filament (2) located in the focal point (F1) on the reflector side is actually imaged in the focal point (F2) of the ellipsoid (1) remote from the reflector.
  • Fig. 2 shows the optical system according to the invention for step lens headlights in the flood position.
  • the structure corresponds to the structure of an optical system explained in FIG. 1.
  • the opening angle of the light bundle (4) emerging from the step lens (3) can be increased almost arbitrarily by the distance (b) between the lamp (2) and the reflector (1) and the distance (a) between the step lens (3 ) and the reflector (1) can be changed.
  • the changes in distance are carried out by means of an appropriately selected forced coupling (not shown in FIGS. 1 and 2).
  • the lamp (2) lies outside the focal point (F1) on the reflector side.
  • the focal point of the stepped lens (F3) does not coincide with the focal point of the ellipsoid (F2) remote from the reflector.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

In der vorliegenden Erfindung wird ein optisches System für Stufenlinsenscheinwerfer beschrieben mit einem ellipsoiden Reflektor (1), einer Lampe (2) und mindestens einer Stufenlinse (3), wobei der Abstand (a) zwischen Stufenlinse (3) und Reflektor (1) zu dem Abstand (b) zwischen Lampe (2) und Reflektor (1) nach Maßgabe des einzustellenden Öffnungswinkels des aus dem Scheinwerfer austretenden Lichtbündels (4) in einer definierten Abhängigkeit steht. Der Abstand (b) wird dadurch eingestellt, dass die Lampe (2) zum Scheitelpunkt des Reflektors (1) hin oder vom Scheitelpunkt des Reflektors (1) weg bewegt wird. Bei dem optischen System besteht der Reflektor (1) aus einem metallischen oder transparenten Material. Mindestens eine der beiden Oberflächen des Reflektors (1) ist mit einem System dünner Schichten versehen. Das optische System wird in Scheinwerfern für Film, Bühne, Studio und Fotografie verwendet. <IMAGE>In the present invention, an optical system for stepped lens headlights is described with an ellipsoidal reflector (1), a lamp (2) and at least one stepped lens (3), the distance (a) between the stepped lens (3) and the reflector (1) to that Distance (b) between lamp (2) and reflector (1) is in a defined dependency in accordance with the opening angle to be set for the light beam (4) emerging from the headlight. The distance (b) is set by moving the lamp (2) towards the vertex of the reflector (1) or away from the vertex of the reflector (1). In the optical system, the reflector (1) consists of a metallic or transparent material. At least one of the two surfaces of the reflector (1) is provided with a system of thin layers. The optical system is used in spotlights for film, stage, studio and photography. <IMAGE>

Description

Die Erfindung betrifft ein optisches System für Stufenlinsenscheinwerfer mit einem ellipsoiden Reflektor, einer Lampe und mindestens einer Stufenlinse.The invention relates to an optical system for stepped lens headlights with a ellipsoidal reflector, a lamp and at least one step lens.

Die lichttechnisch relevanten Teile bei gewöhnlichen optischen Systemen für Stufenlinsenscheinwerfer sind Lampe, Stufenlinse (Fresnellinse) und sphärischer Hilfsreflektor. Dabei befindet sich die Lampenwendel im Wesentlichen unveränderlich im Kugelmittelpunkt des sphärischen Hilfsreflektors. Dadurch wird ein Teil des von der Lampe abgestrahlten Lichts in diese zurückreflektiert und die Lichtabstrahlung in den vorderen Halbraum unterstützt. Dieses nach vorn gerichtete Licht wird durch die Stufenlinse gebündelt. Der Grad der Lichtbündelung ist von dem Abstand zwischen der Stufenlinse und der Lampe abhängig. Befindet sich die Lampenwendel im Brennpunkt der Stufenlinse, so ergibt sich die engste Lichtbündelung. Dadurch wird ein quasiparalleler Strahlengang, auch Spot genannt, erhalten. Durch Verkürzung des Abstandes zwischen der Stufenlinse und der Lampe wird der Öffnungswinkel des austretenden Lichtbündels stetig vergrößert. Dadurch wird ein divergierender Strahlengang, auch Flood genannt, erhalten.The parts relevant to lighting technology in conventional optical systems for Step lens headlights are lamp, step lens (Fresnel lens) and spherical Auxiliary reflector. The lamp filament is located essentially unchangeable in the center of the sphere of the spherical auxiliary reflector. Thereby part of the light emitted by the lamp is reflected back into it and supports the light emission in the front half space. This after light directed at the front is focused by the step lens. The degree of light beam depends on the distance between the step lens and the lamp. If the lamp filament is at the focal point of the stepped lens, it results the closest beam of light. This creates a quasi-parallel beam path, also called spot. By shortening the distance between the stepped lens and the lamp becomes the opening angle of the emerging Light beam steadily enlarged. This creates a divergent beam path, also called flood.

Nachteilig an solchen Scheinwerfern ist die schlechte Lichtausbeute insbesondere in der Spot-Stellung, da hier nur ein verhältnismäßig kleiner Raumwinkelbereich der Lampe durch die Stufenlinse erfasst wird. Außerdem wirkt sich nachteilig aus, dass das von dem sphärischen Reflektor reflektierte Licht zu einem großen Teil die Lampenwendel selbst trifft, dort absorbiert wird und die Lampenwendel zusätzlich aufheizt.A disadvantage of such headlights is the poor light yield in particular in the spot position, since there is only a relatively small solid angle range the lamp is captured by the step lens. It also has an effect disadvantageous from the fact that the light reflected by the spherical reflector a large part hits the lamp filament itself, is absorbed there and the Lamp filament additionally heated.

Aufgabe der Erfindung ist es, ein optisches System für Stufenlinsenscheinwerfer mit einem verbesserten Lichtwirkungsgrad insbesondere in Spot-, aber auch in Floodstellung bei Erhaltung der Gleichmäßigkeit der Beleuchtungsstärke im Lichtfeld bereitzustellen.The object of the invention is to provide an optical system for stepped lens headlights with an improved light efficiency especially in spot, but also in the flood position while maintaining the uniformity of the illuminance to be provided in the light field.

Die Lösung der Aufgabe erfolgt durch ein optisches System für Stufenlinsenscheinwerfer mit einem ellipsoiden Reflektor, einer Lampe und mindestens einer Stufenlinse, wobei der Abstand zwischen Stufenlinse und Reflektor zu dem Abstand zwischen Lampe und Reflektor nach Maßgabe des einzustellenden Öffnungswinkels des aus dem Scheinwerfer austretenden Lichtbündels in einer definierten Abhängigkeit steht.The task is solved by an optical system for stepped lens headlights with an ellipsoidal reflector, a lamp and at least one Step lens, the distance between the step lens and reflector to the Distance between lamp and reflector according to the one to be set Opening angle of the light beam emerging from the headlight in one defined dependency.

Mit dem erfindungsgemäßen optischen System wird ein deutlich verbesserter Lichtwirkungsgrad insbesondere in Spot-, aber auch in Floodstellung erreicht. Gleichzeitig wird die Gleichmäßigkeit der Beleuchtungsstärke im Lichtfeld erhalten.With the optical system according to the invention, a significantly improved Light efficiency achieved especially in the spot, but also in the flood position. At the same time, the uniformity of the illuminance in the light field is maintained.

Erfindungsgemäß ist ein ellipsoider Reflektor mit großer Apertur vorgesehen. Die Spot-Stellung wird dadurch eingestellt, dass sich die Lampenwendel im reflektorseitigen Brennpunkt des Ellipsoids befindet. Das von dem Reflektor reflektierte Licht wird nahezu vollständig im reflektorfernen Brennpunkt des Ellipsoids vereinigt. Die sich im reflektorseitigen Brennpunkt befindliche Lampenwendel wird reell im reflektorfernen Brennpunkt des Ellipsoids abgebildet. Das reflektierte Licht trifft im Wesentlichen nicht die Lampenwendel. Der Brennpunkt der Stufenlinse fällt mit dem Brennpunkt des Ellipsoids zusammen. Bei zweckmäßiger Wahl des Aperturwinkels von Reflektor und Stufenlinse wird das von dem Reflektor reflektierte Licht nahezu vollständig von der Stufenlinse erfasst und als enges Spot-Lichtbündel nach vorne abgestrahlt. Die Lichtausbeute ist damit erheblich größer als bei einem herkömmlichen Stufenlinsenscheinwerfer.According to the invention, an ellipsoidal reflector with a large aperture is provided. The spot position is set by the lamp filament being in the reflector side Focus of the ellipsoid is located. That reflected by the reflector Light is almost completely at the focal point of the ellipsoid, which is remote from the reflector united. The lamp filament located in the focal point on the reflector side is shown in the focal point of the ellipsoid far from the reflector. The reflected light essentially does not hit the lamp filament. The The focal point of the stepped lens coincides with the focal point of the ellipsoid. With an appropriate choice of the aperture angle of the reflector and the stepped lens the light reflected by the reflector is almost entirely from the step lens captured and emitted to the front as a narrow spot light beam. The light output is therefore considerably larger than with a conventional stepped lens headlight.

Der Öffnungswinkel des aus der Stufenlinse austretenden Lichtbündels kann nahezu beliebig vergrößert werden, indem die Lampenposition in Bezug zum Reflektor einerseits und der Abstand der Stufenlinse zum Reflektor andererseits in geeigneter Weise verändert wird. Damit die guten Eigenschaften herkömmlicher Stufenlinsenscheinwerfer in Bezug auf die Gleichmäßigkeit der Beleuchtungsstärke erhalten bleiben, müssen diese Abstandsveränderungen durch eine zweckmäßig gewählte Zwangskoppelung erfolgen.The opening angle of the light beam emerging from the step lens can can be enlarged almost arbitrarily by the lamp position in relation to the Reflector on the one hand and the distance of the stepped lens to the reflector on the other is changed in a suitable manner. So that the good properties more conventional Step lens headlights in terms of the uniformity of the Illuminance must be maintained, these changes in distance through an appropriately chosen forced coupling.

Eine Ausführungsform der Erfindung besteht darin, dass der Ellipsoidreflektor aus einem metallischen oder transparenten Material besteht. Bevorzugt werden Glas und polymere Materialien verwendet. Zur Herstellung einer reflektierenden Oberfläche wird eine der beiden Oberflächen des Reflektors mit einem System dünner Schichten versehen. Dadurch werden vorteilhafterweise sichtbare Strahlungsanteile reflektiert und die unsichtbaren Anteile, insbesondere die Wärmestrahlung, durchgelassen. One embodiment of the invention is that the ellipsoid reflector consists of a metallic or transparent material. To be favoured Glass and polymeric materials used. To make a reflective Surface becomes one of the two surfaces of the reflector with a System of thin layers. This advantageously makes them visible Radiation components are reflected and the invisible components, in particular the heat radiation, let through.

Eine bevorzugte Ausführungsform der Erfindung ist ein optisches System für Stufenlinsenscheinwerfer, wobei die lichtreflektierende Oberfläche des Reflektors lichtstreuend strukturiert ist und keine, eine oder zwei Oberflächen der Stufenlinse lichtstreuend strukturiert sind. Durch die Aufbringung der Struktur wird die Gleichmäßigkeit der Beleuchtungsstärke im Lichtfeld verbessert. Durch die Aufbringung der Struktur wird die Gleichmäßigkeit der Beleuchtungsstärke im Lichtfeld verbessert.A preferred embodiment of the invention is an optical system for Step lens headlight, the light reflecting surface of the reflector is structured to diffuse light and none, one or two surfaces of the Step lens are structured to scatter light. By applying the structure the uniformity of the illuminance in the light field is improved. By applying the structure, the uniformity of the illuminance improved in the light field.

Eine alternative bevorzugte Ausführungsform der Erfindung ist ein optisches System für Stufenlinsenscheinwerfer, wobei mindestens eine der Oberflächen der Stufenlinse lichtstreuend strukturiert ist und die lichtreflektierende Oberfläche des Reflektors nicht lichtstreuend strukturiert ist. Durch die Aufbringung der Struktur wird die Gleichmäßigkeit der Beleuchtungsstärke im Lichtfeld verbessert.An alternative preferred embodiment of the invention is an optical one System for stepped lens headlights, with at least one of the surfaces the step lens is structured to scatter light and the light reflecting surface of the reflector is not structured to scatter light. By applying The structure improves the uniformity of the illuminance in the light field.

Erfindungsgemäß ist die Verwendung des optischen Systems in Scheinwerfern für Film, Bühne, Studio und Fotografie vorgesehen.According to the invention, the use of the optical system in headlights intended for film, stage, studio and photography.

Die Erfindung wird anhand einer beispielhaften Zeichnung näher erläutert. Die Zeichnung besteht aus Fig. 1 und Fig. 2.The invention is explained in more detail using an exemplary drawing. The Drawing consists of FIGS. 1 and 2.

Fig. 1 zeigt das erfindungsgemäße optische System für Stufenlinsenscheinwerfer in Spot-Stellung. Das optische System enthält einen ellipsoiden Reflektor (1), eine Lampe (2) und eine Stufenlinse (3). Das aus dem Scheinwerfer austretende Lichtbündel (4) ist schematisch angedeutet. Die Abstände (a) zwischen Stufenlinse (3) und Reflektor (1) und (b) zwischen Lampe (2) und Reflektor (1) sind dargestellt. Die Spot-Stellung wird dadurch eingestellt, dass sich die Lampenwendel (2) im reflektorseitigen Brennpunkt (F1) des Ellipsoids (1) befindet. Das von dem Reflektor (1) reflektierte Licht wird nahezu vollständig im reflektorfernen Brennpunkt (F2) des Ellipsoids (1) vereinigt. Der Brennpunkt der Stufenlinse (F3) fällt mit dem Brennpunkt des Ellipsoids (F2) zusammen. Die sich im reflektorseitigen Brennpunkt (F1) befindliche Lampenwendel (2) wird reell im reflektorfernen Brennpunkt (F2) des Ellipsoids (1) abgebildet.
Fig. 2 zeigt das erfindungsgemäße optische System für Stufenlinsenscheinwerfer in Flood-Stellung. Der Aufbau entspricht dem in Fig. 1 erläuterten Aufbau eines optischen Systems. Der Öffnungswinkel des aus der Stufenlinse (3) austretenden Lichtbündels (4) kann nahezu beliebig vergrößert werden, in dem der Abstand (b) zwischen der Lampe (2) und dem Reflektor (1) und der Abstand (a) zwischen der Stufenlinse (3) und dem Reflektor (1) verändert werden. Damit die Gleichmäßigkeit der Beleuchtungsstärke erhalten bleibt, erfolgen die Abstandsveränderungen durch eine zweckmäßig gewählte Zwangskoppelung (in Fig. 1 und Fig. 2 nicht dargestellt). Die Lampe (2) liegt außerhalb des reflektorseitigen Brennpunktes (F1). Der Brennpunkt der Stufenlinse (F3) fällt mit dem reflektorfernen Brennpunkt des Ellipsoids (F2) nicht zusammen.Fig. 1 shows the optical system according to the invention for stepped lens headlights in the spot position. The optical system contains an ellipsoidal reflector (1), a lamp (2) and a step lens (3). The light beam (4) emerging from the headlight is indicated schematically. The distances (a) between the stepped lens (3) and reflector (1) and (b) between the lamp (2) and reflector (1) are shown. The spot position is set in such a way that the lamp filament (2) is in the focal point (F1) of the ellipsoid (1) on the reflector side. The light reflected by the reflector (1) is almost completely combined in the focal point (F2) of the ellipsoid (1) remote from the reflector. The focal point of the stepped lens (F3) coincides with the focal point of the ellipsoid (F2). The lamp filament (2) located in the focal point (F1) on the reflector side is actually imaged in the focal point (F2) of the ellipsoid (1) remote from the reflector.
Fig. 2 shows the optical system according to the invention for step lens headlights in the flood position. The structure corresponds to the structure of an optical system explained in FIG. 1. The opening angle of the light bundle (4) emerging from the step lens (3) can be increased almost arbitrarily by the distance (b) between the lamp (2) and the reflector (1) and the distance (a) between the step lens (3 ) and the reflector (1) can be changed. In order to maintain the uniformity of the illuminance, the changes in distance are carried out by means of an appropriately selected forced coupling (not shown in FIGS. 1 and 2). The lamp (2) lies outside the focal point (F1) on the reflector side. The focal point of the stepped lens (F3) does not coincide with the focal point of the ellipsoid (F2) remote from the reflector.

Claims (7)

Optisches System für Stufenlinsenscheinwerfer mit einem ellipsoiden Reflektor (1), einer Lampe (2) und mindestens einer Stufenlinse (3), wobei der Abstand (a) zwischen Stufenlinse (3) und Reflektor (1) zu dem Abstand (b) zwischen Lampe (2) und Reflektor (1) nach Maßgabe des einzustellenden Öffnungswinkels des aus dem Scheinwerfer austretenden Lichtbündels (4) in einer definierten Abhängigkeit steht.Optical system for stepped lens headlights with an ellipsoidal reflector (1), a lamp (2) and at least one step lens (3), the Distance (a) between the stepped lens (3) and reflector (1) to the distance (b) between lamp (2) and reflector (1) according to the setting Opening angle of the light beam emerging from the headlight (4) is in a defined dependency. Optisches System für Stufenlinsenscheinwerfer nach Anspruch 1, wobei der Abstand (b) dadurch eingestellt wird, dass die Lampe (2) zum Scheitelpunkt des Reflektors (1) hin oder vom Scheitelpunkt des Reflektors (1) weg bewegt wird.An optical system for stepped lens headlights according to claim 1, wherein the distance (b) is adjusted in that the lamp (2) to the apex of the reflector (1) or away from the apex of the reflector (1) is moved. Optisches System für Stufenlinsenscheinwerfer nach Anspruch 1 oder 2, wobei der Reflektor (1) aus einem metallischen oder transparenten Material besteht.Optical system for stepped lens headlights according to claim 1 or 2, wherein the reflector (1) made of a metallic or transparent material consists. Optisches System für Stufenlinsenscheinwerfer nach mindestens einem der Ansprüche 1 bis 3, wobei mindestens eine der beiden Oberflächen des Reflektors (1) mit einem System dünner Schichten versehen ist.Optical system for step lens headlights according to at least one of the Claims 1 to 3, wherein at least one of the two surfaces of the reflector (1) is provided with a system of thin layers. Optisches System für Stufenlinsenscheinwerfer nach mindestens einem der Ansprüche 1 bis 4, wobei die lichtreflektierende Oberfläche des Reflektors (1) lichtstreuend strukturiert ist und keine, eine oder zwei Oberflächen der Stufenlinse (3) lichtstreuend strukturiert sind.Optical system for step lens headlights according to at least one of the Claims 1 to 4, wherein the light reflecting surface of the reflector (1) is light scattering and has no, one or two surfaces of the Step lens (3) are structured to scatter light. Optisches System für Stufenlinsenscheinwerfer nach mindestens einem der Ansprüche 1 bis 4, wobei mindestens eine der Oberflächen der Stufenlinse (3) lichtstreuend strukturiert ist und die lichtreflektierende Oberfläche des Reflektors (1) nicht lichtstreuend strukturiert ist.Optical system for step lens headlights according to at least one of the Claims 1 to 4, wherein at least one of the surfaces of the step lens (3) is structured to diffuse light and the light reflecting surface of the Reflector (1) is not structured to scatter light. Verwendung des optischen Systems nach mindestens einem der Ansprüche 1 bis 6 in Scheinwerfern für Film, Bühne, Studio und Fotografie.Use of the optical system according to at least one of the claims 1 to 6 in spotlights for film, stage, studio and photography.
EP02003626A 2001-03-16 2002-02-16 Optical system for stepped lens projector Expired - Lifetime EP1241399B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10113385A DE10113385C1 (en) 2001-03-16 2001-03-16 Fresnels
DE10113385 2001-03-16

Publications (3)

Publication Number Publication Date
EP1241399A2 true EP1241399A2 (en) 2002-09-18
EP1241399A3 EP1241399A3 (en) 2005-04-13
EP1241399B1 EP1241399B1 (en) 2008-05-28

Family

ID=7678153

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02003626A Expired - Lifetime EP1241399B1 (en) 2001-03-16 2002-02-16 Optical system for stepped lens projector

Country Status (4)

Country Link
US (1) US6899451B2 (en)
EP (1) EP1241399B1 (en)
JP (2) JP2002324410A (en)
DE (2) DE10113385C1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1548358A1 (en) * 2003-12-22 2005-06-29 Schott AG Headlmap with stepped lens and variable distance between light source and reflector
EP1548355A2 (en) * 2003-12-22 2005-06-29 Schott AG Stepped lens headlamp
DE10361121A1 (en) * 2003-12-22 2005-07-21 Schott Ag Optical arrangement with stepped lens
WO2006136378A1 (en) * 2005-06-20 2006-12-28 Cooper Crouse-Hinds Gmbh Portable light

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10202870A1 (en) * 2002-01-11 2003-09-04 Zeiss Carl Jena Gmbh Illumination device for microscopes
US6854865B2 (en) * 2003-02-12 2005-02-15 W. T. Storey, Inc. Reflector for light emitting objects
DE10318330B3 (en) * 2003-04-19 2005-01-20 Hensel Studiotechnik Gmbh & Co. Kg Light distribution attachment for stepped lens spotlamp for photographic purposes has non-transparent body with mirrored inner surface, front diffuser and light distributor in front of light input opening
DE102004013962A1 (en) * 2003-12-22 2005-07-21 Schott Ag Fresnel lens spotlight for pocket lamp, has diffusing screen placed in center of fresnel lens to produce scattered light ratio and aperture angle of light to provide mixing ratio of light relative to another light imaged by lens
DE10361116B4 (en) * 2003-12-22 2010-06-17 Auer Lighting Gmbh Fresnels
DE102004014045A1 (en) * 2003-12-22 2005-07-28 Schott Ag Fresnel lens headlamp with coupled change in the distance of lighting elements
DE502004012477D1 (en) * 2003-12-22 2011-06-16 Auer Lighting Gmbh Fresnels
CN1914456A (en) * 2004-02-04 2007-02-14 日东电工株式会社 Lighting device and light irradiating device using it and production method for photoreaction product sheet using those devices
JP4149978B2 (en) * 2004-09-16 2008-09-17 株式会社東芝 Fresnel lens and lighting device
DE102005029669A1 (en) * 2005-06-22 2007-01-11 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg headlights
DE102005044237B4 (en) * 2005-09-16 2012-05-03 Auer Lighting Gmbh Modular headlight
US20080247024A1 (en) * 2006-03-03 2008-10-09 Robe Show Lighting S.R.O. Optical system for a wash light
US20100061107A1 (en) * 2006-03-03 2010-03-11 Pavel Jurik Optical System
US7967477B2 (en) * 2007-09-06 2011-06-28 Philips Lumileds Lighting Company Llc Compact optical system and lenses for producing uniform collimated light
US7589917B2 (en) * 2007-10-25 2009-09-15 Honeywell International Inc. Collimating fresnel lens with diffuser appearance
US8317350B2 (en) 2009-02-25 2012-11-27 Black & Decker Inc. Power tool with a light for illuminating a workpiece
US20110058356A1 (en) 2009-02-25 2011-03-10 Black & Decker Inc. Power tool with light emitting assembly
US8328381B2 (en) 2009-02-25 2012-12-11 Black & Decker Inc. Light for a power tool and method of illuminating a workpiece
DE202009011500U1 (en) 2009-08-20 2010-12-30 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Optical system for an LED light
US9028088B2 (en) 2010-09-30 2015-05-12 Black & Decker Inc. Lighted power tool
US9328915B2 (en) 2010-09-30 2016-05-03 Black & Decker Inc. Lighted power tool
US12059780B2 (en) 2010-09-30 2024-08-13 Black & Decker Inc. Lighted power tool
US9242355B2 (en) 2012-04-17 2016-01-26 Black & Decker Inc. Illuminated power tool
CN206176280U (en) * 2016-08-31 2017-05-17 厦门益光照明科技股份有限公司 LED illumination lamps and lanterns of formal dress or flip -chip lens
CN108826028A (en) * 2018-08-29 2018-11-16 广东欧曼科技股份有限公司 A kind of floodlight

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3428800A (en) * 1965-12-10 1969-02-18 Sylvania Electric Prod Spotlight lamp
JPS6020924A (en) * 1983-07-14 1985-02-02 Agency Of Ind Science & Technol Production of bead-foam insoluble cyclodextrin polymer
DE3413310A1 (en) * 1984-04-09 1985-10-17 Dr.-Ing. Willing GmbH, 8604 Scheßlitz LIGHTING HEADLAMP WITH ADJUSTABLE BEAM ANGLE
DE3919643A1 (en) * 1989-06-16 1991-01-03 Reiche & Vogel Gmbh HEADLIGHT THAT IS CONTINUOUSLY ADJUSTABLE IN ITS BRIGHTNESS
US5544029A (en) * 1993-11-12 1996-08-06 Cunningham; David W. Lighting fixture for theater, television and architectural applications
EP0846913B1 (en) * 1996-12-04 2004-07-07 Dedo Weigert Film GmbH Spotlight with variable illumination output angle
US5904417A (en) * 1997-08-04 1999-05-18 Buhl Electric, Inc. Light fixture with elliptical reflector and mechanical shutter dimmer
US6123436A (en) * 1997-08-05 2000-09-26 Vari-Lite, Inc. Optical device for modifying the angular and spatial distribution of illuminating energy
JP3017195B1 (en) * 1998-12-10 2000-03-06 スタンレー電気株式会社 Lamp

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1548358A1 (en) * 2003-12-22 2005-06-29 Schott AG Headlmap with stepped lens and variable distance between light source and reflector
EP1548355A2 (en) * 2003-12-22 2005-06-29 Schott AG Stepped lens headlamp
DE10361121A1 (en) * 2003-12-22 2005-07-21 Schott Ag Optical arrangement with stepped lens
EP1548355B1 (en) * 2003-12-22 2010-05-19 Auer Lighting GmbH Stepped lens headlamp
WO2006136378A1 (en) * 2005-06-20 2006-12-28 Cooper Crouse-Hinds Gmbh Portable light
US8162503B2 (en) 2005-06-20 2012-04-24 Cooper Crouse-Hinds Gmbh Portable lighting device

Also Published As

Publication number Publication date
US6899451B2 (en) 2005-05-31
DE50212306D1 (en) 2008-07-10
JP2002324410A (en) 2002-11-08
US20030063466A1 (en) 2003-04-03
JP4792486B2 (en) 2011-10-12
EP1241399B1 (en) 2008-05-28
DE10113385C1 (en) 2002-08-29
EP1241399A3 (en) 2005-04-13
JP2008288215A (en) 2008-11-27

Similar Documents

Publication Publication Date Title
EP1241399B1 (en) Optical system for stepped lens projector
EP1548358A1 (en) Headlmap with stepped lens and variable distance between light source and reflector
DE112013007443B4 (en) Headlamp for use in a vehicle
DE1472179C2 (en) Diascope projection device
DE60317254T2 (en) Elliptical lighting assembly without light shield for generating a low beam and headlights with such a lighting assembly
DE69305654T2 (en) LIGHTING SYSTEM FOR SPOTLIGHTS, HEADLIGHTS AND MAGNIFICATION DEVICES
DE19704426B4 (en) Headlamp for vehicles according to the projection principle
DE4315393A1 (en) Headlamp (headlight) for vehicles
EP1548356A1 (en) Headlamp with stepped lens and variable distance between light source and reflector
DE10361118B4 (en) Fresnels
DE10100176A1 (en) Lamp has first and second reflection surfaces forming two-shell mussel shape either side of central axis, third reflection surface reflecting light from second reflection surface forwards
DE3412476A1 (en) FLASHLIGHT
DE6921267U (en) HEADLIGHT
EP1548357B1 (en) Stepped lens projector
DE2518539A1 (en) CHASELIGHTS
EP0001403A1 (en) Medical lighting device, particularly for dental purposes
DE19822846A1 (en) Optical system for distribution of light from lamp e.g. a photographic flashlamp
EP1610055B1 (en) Focusable projector with asymmetrical light distribution
DE2033443A1 (en) Lighting device, in particular for motor vehicles
DE29922697U1 (en) Headlights
DE29804248U1 (en) Headlights
DE29804251U1 (en) Headlights
DE102004014045A1 (en) Fresnel lens headlamp with coupled change in the distance of lighting elements
DE3225594A1 (en) Episcopic projector
DE1926935C (en) Headlights

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20020216

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SCHOTT AG

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

AKX Designation fees paid

Designated state(s): CH DE FR GB IT LI

17Q First examination report despatched

Effective date: 20051104

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIC1 Information provided on ipc code assigned before grant

Ipc: F21S 8/00 20060101AFI20071205BHEP

Ipc: F21W 131/406 20060101ALI20071205BHEP

Ipc: F21V 5/02 20060101ALI20071205BHEP

Ipc: F21V 14/02 20060101ALI20071205BHEP

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: AUER LIGHTING GMBH

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 50212306

Country of ref document: DE

Date of ref document: 20080710

Kind code of ref document: P

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20090303

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080528

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090228

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090228

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20170217

Year of fee payment: 16

Ref country code: FR

Payment date: 20170217

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20170216

Year of fee payment: 16

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50212306

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20180216

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20181031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180216

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180228