EP2102546B1 - Reflector emitter - Google Patents

Reflector emitter Download PDF

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Publication number
EP2102546B1
EP2102546B1 EP07801332A EP07801332A EP2102546B1 EP 2102546 B1 EP2102546 B1 EP 2102546B1 EP 07801332 A EP07801332 A EP 07801332A EP 07801332 A EP07801332 A EP 07801332A EP 2102546 B1 EP2102546 B1 EP 2102546B1
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EP
European Patent Office
Prior art keywords
concave mirror
reflector
focal point
radiator according
focal
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.)
Not-in-force
Application number
EP07801332A
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German (de)
French (fr)
Other versions
EP2102546A1 (en
Inventor
Jan Schulz
Michael Potthoff
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.)
Alfred Wegener Insitut fuer Polar und Meeresforschung
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Alfred Wegener Insitut fuer Polar und Meeresforschung
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Publication of EP2102546A1 publication Critical patent/EP2102546A1/en
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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
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • 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
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • 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
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • 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
    • F21V7/10—Construction
    • F21V7/16—Construction with provision for adjusting the curvature
    • 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
    • F21V14/04—Controlling the distribution of the light emitted by adjustment of elements by movement of reflectors
    • 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
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/005—Sealing arrangements therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to a reflector radiator for generating a directed light beam with a combined reflector of at least one elliptical concave mirror in the form of a Rotationsellipsoidenabitess, another concave mirror and an aperture and with a light source in a focal point of the ellipsoid of revolution.
  • Such reflector emitters have a particularly high light output or low losses due to scattering. All light rays emanating from the light source and meet the elliptical concave mirror in the form of a Rotationsellipsoidenabitess are reflected in the second focus of the ellipsoid of revolution and fed from there to the other concave mirror. This reflects the light in a shaped beam out through the aperture.
  • Such arrangements can be used for applications in which a high light output at given radiation angles is advantageous.
  • a reflector lamp which consists of a non-closed system of two mirrors, which bundles a certain amount of light into a glass fiber.
  • the arrangement of the small partial mirrors allows a variable exit angle from the luminaire, but does not follow the principle of matching the focal points of elliptical and other concave mirrors with the aperture and is therefore not initially designed for high yield.
  • the lamp has only a single lamp and represents a largely punk-shaped light source.
  • the illumination device is a reflector lamp with symmetrically arranged mirrors.
  • the elliptical concave mirror sits behind the lamp, the further concave mirror is a small-diameter spherical half-shell, which rests directly on the spherical lamp.
  • a higher yield is sought by the center of the lamp is located in the first focal point of the ellipse.
  • the arrangement also allows no rays that fall directly outside the two mirrors. However, a not insignificant amount of light is absorbed by the two mirror penetrating lamp socket. Again, the lamp has only a single lamp.
  • a reflector lamp is known in which the light source is punctiform sitting in the first focal point of the elliptical concave mirror and is completed by another, spherical concave mirror having a very large aperture, which is immediately followed by an optical lens. Light losses occur here only through the lamp holder, which penetrates through the elliptical concave mirror, but also prevents radiation in the direct direction to the second focal point. In this arrangement, the light is scattered by the lens before reaching the second focus and a bundle of parallel rays is generated. From the US 2003/0016539 A1 Reflectors are known which consist of solid bodies with two differently shaped and at least partially mirrored surfaces.
  • the focal point may be either an incoming radiation receiver or a source of outgoing radiation.
  • the reflectors are intended for spotlights with only one central light source or vice versa for receivers with only one focal point.
  • a reflector radiator is off EP1557605 known.
  • the GB 173,243 discloses in FIG. 3 a headlamp consisting of two opposing mirrors, wherein the arrangement of elliptical and further, spherical concave mirror with the center of the spherical shell and the lamp in the first focal point of the ellipsoid of revolution a Loss of light largely prevented. Only the not indicated here lamp socket ensures a loss.
  • the aperture is formed in such a way that a particularly advantageous light cone is produced for headlamps, which is intended to prevent blinding of oncoming drivers.
  • the reflector lamp consists of a combined reflector of an elliptical concave mirror in the form of a Rotationsellipsoidenabitess which is symmetrical to the line connecting the focal points of the ellipsoid of revolution as a rotation axis, another concave mirror in the form of a spherical shell portion with a radius corresponding to the distance between the focal points of the ellipsoid of revolution , and a central aperture, wherein the further concave mirror with respect to the elliptical concave mirror is arranged such that the origin of the radius of the spherical shell coincides with the first focal point of the ellipsoid of revolution and the center of the central aperture with the second focal point of the ellipsoid of revolution, and with a Light source in the first focal point of the ellipsoid of revolution.
  • the known reflector radiators are formed from rotationally symmetrical arrangements and each have only one singular light source. Depending on the application, this design requires a bright, powerful lamp. For the formation of a light source as an arrangement of several less faint lamps, this design offers no approaches.
  • the object of the present invention is therefore to provide a reflector radiator, which is designed to generate a strong, collimated light beam for the use of several less faint lamps.
  • the reflector emitter should also be easy and inexpensive to produce.
  • the solution according to the invention for this task can be found in the main claim.
  • Advantageous developments of the invention Reflector radiators are shown in the subclaims and are explained in more detail below in connection with the invention.
  • the ellipsoid of revolution section is formed from a longitudinal section plane extending both in the two focal points and by a cross-sectional plane perpendicular to the connecting line of the two focal points between its center and one of its foci cut ellipsoids of revolution.
  • the further concave mirror is formed from any, at least one focal point, cut in a sectional plane through the focal point hollow body.
  • the longitudinal sectional plane of the ellipsoidal rotation portion and the sectional plane of the further concave mirror are arranged in a common ground plane, the concave mirror surfaces are arranged opposite to each other and the focal point lying outside the ellipsoid of rotation and the focus of the other concave mirror coincide.
  • the light source is disposed within the focal ellipsoid section focal point and the aperture perpendicular to the further concave mirror. All light rays which strike the surface of the elliptical mirror from the light source in the focal point lying within the ellipsoidal mirror in the form of the ellipsoidal mirror section are reflected onto the focal point located outside the ellipsoidal rotation section and from there on to the further concave mirror.
  • the light beams are deflected in such a way that they form a shaped bundle, which leaves the reflector emitter perpendicular to the ground plane through the aperture arranged in the beam path behind the further concave mirror.
  • the light source in the inner focal point of the ellipsoid of revolution is a light-emitting diode.
  • Light emitting diodes have a higher light output than incandescent lamps, they are less hot and have a significantly longer life.
  • the planar and non-rotationally symmetrical arrangement of the two partial mirrors makes it possible, in a particularly advantageous further development of the reflector emitter according to the invention, for the combined reflector to have two to n ellipsoidal sections distributed around the further concave mirror in the common ground plane such that the outside the Rotationsellipsoidenabête lying foci coincide with the focus of the other concave mirror.
  • a reflector emitter is realized, which is designed according to the task to produce a strong, directed light beam for the use of multiple less faint lamps.
  • the luminance of the LED's is significantly lower than that of incandescent bulbs and so, among other things, the task for the use of several less faint lamps in a common reflector radiator justified.
  • Reflector lamps with LEDs as the light source are known from the literature. So will in the DE 20 2006 004 481 U1 a lighting device is presented, which has an LED headlight from an array of individually lens-focused LEDs on a mast radiating upwards. Above the LED spotlight, a number of flat and partially movable mirrors are arranged, which reflect the light on a size and position determinable ground area. This lighting device is unsuitable for sharp parallel beam focusing and can be used as street lighting. It does not require any further focusing mirrors for its intended purpose and scatters are accepted. From the DE 20 2004 009 121 U1 For example, a headlamp is known which has a plurality of individually shaped LEDs whose light is directed by parabolic mirrors and specially oriented lenses. This arrangement is unsuitable for sharp parallel beam focusing and is used for vehicle headlights.
  • the further concave mirror is linearly extended and the combined reflector has two to n Rotationsellipsoidenabête which are distributed around the extended further concave mirror around distributed in the common ground plane that the outside the focal ellipsoid lying focal points coincide with the linear focal line of the extended further concave mirror.
  • the further concave mirror in its diameter and its outer shape and focus or at least a point of its focal line is adjustable around the ground plane around, can be an even more extensive adjustment of the light beam be achieved in shape, directional and luminous density distribution for a variety of applications.
  • the focal point of the further concave mirror out of the common ground plane a convergent or diverging light beam can be generated in addition to the projection into the infinite. It can be provided for further advantageous refinements of the reflector emitter according to the invention, that the adjustment is done by manual positioning devices or by motorized adjusting devices with or without remote control.
  • the reflector radiator is at least made in two parts, wherein in a shell the Rotationsellipsoidenabête and the aperture and in a lower part of the further concave mirrors and the lamp sockets are arranged and that upper and lower part fixed are interconnected, with both the parting line between Upper and lower part and the aperture, which has a transparent cover, are sealed to the outside.
  • the separation is important for the production of the combined reflector on the one hand and for a lamp replacement during operation on the other hand.
  • a sealing of the parting line between the upper and lower part is provided for example by an O-ring or a permanently flexible sealant and the aperture by means of a dense and optionally pressure-tight inserted in the top window.
  • the light sources emit light of the same or different spectral ranges. With such an embodiment, by light mixing in the distance, the light color can be adjusted.
  • the light sources are halogen lamps or fluorescent lamps and that the transparent covering of the aperture retains UV radiation and / or infrared radiation. Every light source, for which suitable sizes can be obtained in the reflector, can be used.
  • the transparent cover as a viewing window can consist of any transparent material that is flat or curved and optionally pressure-resistant interpretable.
  • the cavities of the elliptical mirror and the further concave mirror are poured out or made of solid material and that the boundary surfaces are mirror-coated except for the passage surfaces for the light sources and the aperture.
  • FIG. 1 shows a reflector radiator RS from an upper part RO with two elliptical concave mirrors EH as Rotationsellipsoidenabroughe RE and a round aperture RA and a lower part RU with a further concave mirror WH and the light sources LQ in the opposite focal points BA of the elliptical concave mirror EH.
  • the mutually facing focal points BZ and the focal point BP of the further concave mirror WH, the sectional planes SE of the elliptical concave mirror EH and the sectional plane SW of the further concave mirror WH coincide in the common ground plane GG .
  • the openings OE of the elliptical concave mirror and the opening OW of the further concave mirror WH are opposite to each other.
  • the round aperture RA is arranged centrally above the further concave mirror WH .
  • the light sources LQ in the focal points BA facing away from each other emit light beams LS whose main component LH meet the elliptical concave mirror EH in the associated ellipsoid RE , from there through the mutually facing focal points BZ are reflected in the further concave mirror WH and then all this as a parallel bundle PB leave through the round aperture RA .
  • the residual portion LR of the light beams LS leaving the light sources LQ is absorbed within the reflector emitter RS or emerges as stray radiation SS through the round aperture RA from the reflector emitter RS .
  • Upper part RO and lower part RU of the reflector emitter RS are at the common ground plane GG through Connecting elements VE, here indicated as screw SR by dash-dot lines, firmly connected to each other and sealed by a sealing element DE, here as an O-ring seal OR , sealed against, for example, under pressure pending water.
  • a transparent cover TA which also against, for example, under pressure water by means of a sealing element DE, here also shown as O-ring seal OA , sealed and by means of fasteners VE, here as Screw connections SA indicated by dash-dot lines, fixed pressure ring DR is held in the upper part RO .
  • the power source necessary for the operation of the reflector radiator RS for example as an electrical supply line or as a battery compartment is not shown here.
  • FIG. 2 shows a top RO of a reflector radiator RS with two elliptical concave mirrors EH in view from below.
  • the illustration corresponds to the sectional view taken along the plane AB in FIG Fig.1 , Both elliptical concave mirrors EH as ellipsoidal sections of revolution RE and the round aperture RA arranged in their center are visible.
  • the position of the light sources LQ in the lower part RU are indicated by dashed lines, as well as the position of the selected in this embodiment seal member DE as O-ring seal OR and the mounting holes for the connecting elements VE as screw SR.
  • FIG. 3 shows a top RO of a reflector radiator RS as an embodiment with four elliptical concave mirrors EH in view from below. Missing reference numbers see Fig.2 ,
  • FIG. 4 shows a top RO of a reflector emitter RS as an embodiment with two elliptical Hohlspiegein EH and a solid aperture AA in view from below. Missing reference numbers see Fig.2 ,
  • FIG. 5 shows a top RO of a reflector emitter RS as an embodiment with ten elliptical concave mirrors EH and a solid aperture AA in view from below. Missing reference numbers see Fig.2 ,

Abstract

A reflector emitter includes a combination reflector having at least one elliptical concave mirror shaped as an ellipsoid of revolution section having first and second focal points disposed outside and inside of the ellipsoid of revolution section, respectively. The reflector emitter includes at least one light source at the second focal point. The ellipsoid of revolution section is formed as an ellipsoid of revolution that is cut between its center and the first focal point in a longitudinal section plane and in a cross-sectional plane. An aperture is provided above an other concave mirror having at least one focal point that coincides with the first focal point of the ellipsoid of revolution section. The other concave mirror is formed as a hollow body cut in a sectional plane through its focal point. This sectional plane and the longitudinal section plane of the ellipsoid of revolution section share a common plane of reference and the concave mirrors have opposing faces.

Description

Die Erfindung bezieht sich auf einen Reflektorstrahler zur Erzeugung eines gerichteten Lichtstrahls mit einem kombinierten Reflektor aus zumindest einem elliptischen Hohlspiegel in Form eines Rotationsellipsoidenabschnitts, einem weiteren Hohlspiegel sowie einer Apertur und mit einer Lichtquelle in einem Brennpunkt des Rotationsellipsoidenabschnitts.The invention relates to a reflector radiator for generating a directed light beam with a combined reflector of at least one elliptical concave mirror in the form of a Rotationsellipsoidenabschnitts, another concave mirror and an aperture and with a light source in a focal point of the ellipsoid of revolution.

Derartige Reflektorstrahler weisen eine besonders hohe Lichtausbeute beziehungsweise geringe Verluste durch Streuung auf. Alle Lichtstrahlen, die von der Lichtquelle ausgehen und den elliptischen Hohlspiegel in Form eines Rotationsellipsoidenabschnitts treffen, werden in den zweiten Brennpunkt des Rotationsellipsoiden reflektiert und von dort dem weiteren Hohlspiegel zugeleitet. Dieser reflektiert das Licht in einem geformten Strahl durch die Apertur hinaus. Derartige Anordnungen können für Anwendungen eingesetzt werden, bei denen einen hohe Lichtausbeute bei vorgegebenen Abstrahlwinkeln von Vorteil ist.Such reflector emitters have a particularly high light output or low losses due to scattering. All light rays emanating from the light source and meet the elliptical concave mirror in the form of a Rotationsellipsoidenabschnitts are reflected in the second focus of the ellipsoid of revolution and fed from there to the other concave mirror. This reflects the light in a shaped beam out through the aperture. Such arrangements can be used for applications in which a high light output at given radiation angles is advantageous.

Stand der TechnikState of the art

Aus der FR 2 718 825 A1 ist eine Reflektorleuchte bekannt, die aus einem nicht geschlossenen System von zwei Spiegeln besteht, die einen bestimmten Lichtanteil in eine Glasfaser hinein bündelt. Die Anordnung der kleinen Teilspiegel lassen einen variablen Austrittswinkel aus der Leuchte zu, folgt aber nicht dem Prinzip, die Brennpunkte von elliptischen und weiteren Hohlspiegeln mit der Apertur in Übereinstimmung zu bringen und ist daher nicht zuerst auf hohe Ausbeute ausgelegt. Die Leuchte weist nur eine einzige Lampe auf und stellt eine weitgehend punkförmige Lichtquelle dar. Aus der US 2005/0036314 A1 ist ein Projektor bekannt, dessen Beleuchtungseinrichtung eine Reflektorleuchte mit symmetrisch angeordneten Spiegeln ist. Der elliptische Hohlspiegel sitzt hinter der Lampe, der weitere Hohlspiegel ist eine Kugelhalbschale mit kleinem Durchmesser, der unmittelbar an der kugelförmigen Lampe anliegt. Hier wird eine höhere Ausbeute angestrebt, indem der Mittelpunkt der Lampe im ersten Brennpunkt der Ellipse liegt. Die Anordnung lässt außerdem keine Strahlen zu, die direkt außerhalb der beiden Spiegel fallen. Allerdings wird ein nicht unbedeutender Lichtanteil durch die beide Spiegel durchdringende Lampenfassung absorbiert. Auch hier weist die Leuchte nur eine einzelne Lampe auf. Aus der JP 11064795 ist eine Reflektorleuchte bekannt, bei der die Lichtquelle punktförmig im ersten Brennpunkt des elliptischen Hohlspiegels sitzt und durch einen weiteren, spärischen Hohlspiegel abgeschlossen wird, der eine sehr große Apertur aufweist, an die sofort eine optische Linse anschließt. Lichtverluste treten auch hier nur durch die Lampenfassung auf, die durch den elliptischen Hohlspiegel dringt, aber auch Abstrahlung in direkter Richtung auf den zweiten Brennpunkt verhindert. Bei dieser Anordnung wird das Licht vor dem Erreichen des zweiten Brennpunkts durch die vorgesetzte Linse gestreut und ein Bündel paralleler Strahlen erzeugt. Aus der US 2003/0016539 A1 sind Reflektoren bekannt, die aus Vollkörpern mit zwei unterschiedlich geformten und zumindest teilweise verspiegelten Oberflächen bestehen. Durch die Form der Oberflächen kann eine optimierte Strahllenkung bei gleichzeitig kompakter Bauweise des Reflektors erzielt werden. Im Brennpunkt kann entweder ein Empfänger für eingehende Strahlung oder eine Quelle für ausgehende Strahlung angeordnet sein. Die Reflektoren sind für Strahler mit ausschließlich einer zentralen Lichtquelle oder umgekehrt für Empfänger mit ausschließlich einem Brennpunkt vorgesehen. Weiterhin ist ein Reflektorstrahler aus EP1557605 bekannt.From the FR 2 718 825 A1 is known a reflector lamp, which consists of a non-closed system of two mirrors, which bundles a certain amount of light into a glass fiber. The arrangement of the small partial mirrors allows a variable exit angle from the luminaire, but does not follow the principle of matching the focal points of elliptical and other concave mirrors with the aperture and is therefore not initially designed for high yield. The lamp has only a single lamp and represents a largely punk-shaped light source. From the US 2005/0036314 A1 is a projector known, the illumination device is a reflector lamp with symmetrically arranged mirrors. The elliptical concave mirror sits behind the lamp, the further concave mirror is a small-diameter spherical half-shell, which rests directly on the spherical lamp. Here, a higher yield is sought by the center of the lamp is located in the first focal point of the ellipse. The arrangement also allows no rays that fall directly outside the two mirrors. However, a not insignificant amount of light is absorbed by the two mirror penetrating lamp socket. Again, the lamp has only a single lamp. From the JP 11064795 a reflector lamp is known in which the light source is punctiform sitting in the first focal point of the elliptical concave mirror and is completed by another, spherical concave mirror having a very large aperture, which is immediately followed by an optical lens. Light losses occur here only through the lamp holder, which penetrates through the elliptical concave mirror, but also prevents radiation in the direct direction to the second focal point. In this arrangement, the light is scattered by the lens before reaching the second focus and a bundle of parallel rays is generated. From the US 2003/0016539 A1 Reflectors are known which consist of solid bodies with two differently shaped and at least partially mirrored surfaces. Due to the shape of the surfaces, optimized beam steering can be achieved with a compact design of the reflector. The focal point may be either an incoming radiation receiver or a source of outgoing radiation. The reflectors are intended for spotlights with only one central light source or vice versa for receivers with only one focal point. Furthermore, a reflector radiator is off EP1557605 known.

Die GB 173,243 , von der die vorliegende Erfindung als nächstliegendem Stand der Technik ausgeht, offenbart in Figur 3 einen Autoscheinwerfer, der aus zwei einander gegenüberliegenden Spiegeln besteht, wobei die Anordnung aus elliptischem und weiterem, sphärischem Hohlspiegel mit dem Mittelpunkt der Kugelschale und der Lampe im ersten Brennpunkt des Rotationsellipsoiden einen Lichtverlust weitgehend verhindert. Lediglich die hier nicht weiter angedeutete Lampenfassung sorgt für einen Verlust. Die Apertur ist derart ausgeformt, dass ein für Autoscheinwerfer besonders vorteilhafter Lichtkegel erzeugt wird, der eine Blendung entgegenkommender Fahrer verhindern soll. Die Reflektorleuchte besteht aus einem kombinierten Reflektor aus einem elliptischen Hohlspiegel in Form eines Rotationsellipsoidenabschnitts, der zu der Verbindungslinie zwischen den Brennpunkten des Rotationsellipsoiden als Rotationsachse symmetrisch ist, einem weiteren Hohlspiegel in Form eines Kugelschalenabschnitts mit einem Radius, der dem Abstandsmaß zwischen den Brennpunkten des Rotationsellipsoiden entspricht, und einer zentralen Apertur, wobei der weitere Hohlspiegel in Bezug auf den elliptischen Hohlspiegel derart angeordnet ist, dass der Ursprung des Radius der Kugelschale mit dem ersten Brennpunkt des Rotationsellipsoiden und der Mittelpunkt der zentralen Apertur mit dem zweiten Brennpunkt des Rotationsellipsoiden zusammenfällt, und mit einer Lichtquelle im ersten Brennpunkt des Rotationsellipsoiden.The GB 173,243 , from which the present invention proceeds as the closest prior art, discloses in FIG. 3 a headlamp consisting of two opposing mirrors, wherein the arrangement of elliptical and further, spherical concave mirror with the center of the spherical shell and the lamp in the first focal point of the ellipsoid of revolution a Loss of light largely prevented. Only the not indicated here lamp socket ensures a loss. The aperture is formed in such a way that a particularly advantageous light cone is produced for headlamps, which is intended to prevent blinding of oncoming drivers. The reflector lamp consists of a combined reflector of an elliptical concave mirror in the form of a Rotationsellipsoidenabschnitts which is symmetrical to the line connecting the focal points of the ellipsoid of revolution as a rotation axis, another concave mirror in the form of a spherical shell portion with a radius corresponding to the distance between the focal points of the ellipsoid of revolution , and a central aperture, wherein the further concave mirror with respect to the elliptical concave mirror is arranged such that the origin of the radius of the spherical shell coincides with the first focal point of the ellipsoid of revolution and the center of the central aperture with the second focal point of the ellipsoid of revolution, and with a Light source in the first focal point of the ellipsoid of revolution.

Die bekannten Reflektorstrahler sind aus rotationsymmetrischen Anordnungen gebildet und weisen jeweils nur eine singuläre Lichtquelle auf. Diese Bauweise setzt je nach Anwendungsfall eine helle, leistungsstarke Lampe voraus. Für die Ausbildung einer Lichtquelle als einer Anordnung aus mehreren lichtschwächeren Lampen bietet diese Bauweise keine Ansätze.The known reflector radiators are formed from rotationally symmetrical arrangements and each have only one singular light source. Depending on the application, this design requires a bright, powerful lamp. For the formation of a light source as an arrangement of several less faint lamps, this design offers no approaches.

Aufgabenstellungtask

Die Aufgabe für die vorliegende Erfindung ist daher die Bereitstellung eines Reflektorstrahlers, der zur Erzeugung eines starken, parallel gerichteten Lichtstrahls für den Einsatz von mehreren lichtschwächeren Lampen ausgebildet ist. Der Reflektorstrahler soll darüber hinaus einfach und preiswert herstellbar sein. Die erfindungsgemäße Lösung für diese Aufgabe ist dem Hauptanspruch zu entnehmen. Vorteilhafte Weiterbildungen des erfindungsgemäßen Reflektorstrahlers sind in den Unteransprüchen aufgezeigt und werden im Folgenden im Zusammenhang mit der Erfindung näher erläutert.The object of the present invention is therefore to provide a reflector radiator, which is designed to generate a strong, collimated light beam for the use of several less faint lamps. The reflector emitter should also be easy and inexpensive to produce. The solution according to the invention for this task can be found in the main claim. Advantageous developments of the invention Reflector radiators are shown in the subclaims and are explained in more detail below in connection with the invention.

Bei dem erfindungsgemäßen Reflektorstrahler ist der Rotationsellipsoidenabschnitt aus einem sowohl in der durch die beiden Brennpunkte verlaufenden Längsschnittebene als auch durch eine senkrecht zur Verbindungslinie der beiden Brennpunkte angeordnete Querschnittebene zwischen seinem Mittelpunkt und einem seiner Brennpunkte geschnittenen Rotationsellipsoiden gebildet. Der weitere Hohlspiegel ist aus einem beliebigen, zumindest einen Brennpunkt aufweisenden, in einer Schnittebene durch den Brennpunkt geschnittenen Hohlkörper gebildet. Die Längsschnittebene des Rotationsellipsoidenabschnitts und die Schnittebene des weiteren Hohlspiegels sind in einer gemeinsamen Grundebene angeordnet, die konkaven Spiegelflächen sind einander entgegengesetzt angeordnet und der außerhalb des Rotationsellipsoidenabschnitts liegende Brennpunkt und der Brennpunkt des weiteren Hohlspiegels fallen zusammen. Die Lichtquelle ist im innerhalb des Rotationsellipsoidenabschnitts liegenden Brennpunkt und die Apertur senkrecht über dem weiteren Hohlspiegel angeordnet. Alle Lichtstrahlen, die von der Lichtquelle im innerhalb des elliptischen Spiegels in Form des Rotationsellipsoidenabschnitts liegenden Brennpunkt ausgehend auf die Fläche des elliptischen Spiegels treffen, werden auf den außerhalb des Rotationsellipsoidenabschnitts liegenden Brennpunkt reflektiert und von da weiter auf den weiteren Hohlspiegel geleitet. Hier werden die Lichtstrahlen derart abgelenkt, dass sie ein geformtes Bündel bilden, das durch die im Strahlengang hinter dem weiteren Hohlspiegel angeordnete Apertur den Reflektorstrahler senkrecht zur Grundebene verlässt. Nach einer vorteilhaften Weiterbildung des Reflektorstrahlers nach der Erfindung kann vorgesehen sein, dass die Lichtquelle in dem innerhalb liegenden Brennpunkt des Rotationsellipsoidenabschnitts eine Leuchtdiode ist. Leuchtdioden haben eine höhere Lichtausbeute als Glühlampen, sie werden weniger heiß und haben eine entscheidend längere Lebensdauer.In the reflector emitter according to the invention, the ellipsoid of revolution section is formed from a longitudinal section plane extending both in the two focal points and by a cross-sectional plane perpendicular to the connecting line of the two focal points between its center and one of its foci cut ellipsoids of revolution. The further concave mirror is formed from any, at least one focal point, cut in a sectional plane through the focal point hollow body. The longitudinal sectional plane of the ellipsoidal rotation portion and the sectional plane of the further concave mirror are arranged in a common ground plane, the concave mirror surfaces are arranged opposite to each other and the focal point lying outside the ellipsoid of rotation and the focus of the other concave mirror coincide. The light source is disposed within the focal ellipsoid section focal point and the aperture perpendicular to the further concave mirror. All light rays which strike the surface of the elliptical mirror from the light source in the focal point lying within the ellipsoidal mirror in the form of the ellipsoidal mirror section are reflected onto the focal point located outside the ellipsoidal rotation section and from there on to the further concave mirror. Here, the light beams are deflected in such a way that they form a shaped bundle, which leaves the reflector emitter perpendicular to the ground plane through the aperture arranged in the beam path behind the further concave mirror. According to an advantageous refinement of the reflector radiator according to the invention, it can be provided that the light source in the inner focal point of the ellipsoid of revolution is a light-emitting diode. Light emitting diodes have a higher light output than incandescent lamps, they are less hot and have a significantly longer life.

Die ebene und nicht rotationssymmetrische Anordnung der beiden Teilspiegel gestattet es, dass bei einer besonders vorteilhaften Weiterbildung des Reflektorstrahlers nach der Erfindung der kombinierte Reflektor zwei bis n Rotationsellipsoidenabschnitte aufweisen kann, die um den weiteren Hohlspiegel herum verteilt derart in der gemeinsamen Grundebene angeordnet sind, dass die außerhalb der Rotationsellipsoidenabschnitte liegenden Brennpunkte mit dem Brennpunkt des weiteren Hohlspiegels zusammenfallen. Durch eine derartige sternförmige Anordnung von Lichtquellen, die alle nach dem selben Prinzip ihre Lichtstrahlen in einem gemeinsamen Bündel über dem weiteren Hohlspiegel zusammenführen, wird ein Reflektorstrahler realisiert, der aufgabengemäß zur Erzeugung eines starken, gerichteten Lichtstrahls für den Einsatz von mehreren lichtschwächeren Lampen ausgebildet ist. Die Leuchtdichte der LED's ist deutlich geringer als die von Glühlampen und so begründet sich unter anderem die Aufgabenstellung zum Einsatz von mehreren lichtschwächeren Lampen in einem gemeinsamen Reflektorstrahler.The planar and non-rotationally symmetrical arrangement of the two partial mirrors makes it possible, in a particularly advantageous further development of the reflector emitter according to the invention, for the combined reflector to have two to n ellipsoidal sections distributed around the further concave mirror in the common ground plane such that the outside the Rotationsellipsoidenabschnitte lying foci coincide with the focus of the other concave mirror. By such a star-shaped arrangement of light sources, which all bring together their light beams in a common bundle on the other concave mirror according to the same principle, a reflector emitter is realized, which is designed according to the task to produce a strong, directed light beam for the use of multiple less faint lamps. The luminance of the LED's is significantly lower than that of incandescent bulbs and so, among other things, the task for the use of several less faint lamps in a common reflector radiator justified.

Aus der Literatur sind Reflektorstrahler mit LED's als Lichtquelle bekannt. So wird in der DE 20 2006 004 481 U1 eine Beleuchtungseinrichtung vorgestellt, die einen LED-Scheinwerfer aus einen Array von einzeln mit Linsen fokussierten LED's an einem Mast nach oben abstrahlend aufweist. Oberhalb des LED-Scheinwerfers ist eine Anzahl planer und teilweise beweglicher Spiegel angeordnet, die das Licht auf ein in Größe und Position bestimmbares Bodenareal reflektieren. Diese Beleuchtungseinrichtung ist zur scharfen parallelen Strahlbündelung ungeeignet und kann als Straßenbeleuchtung eingesetzt werden. Sie benötigt für ihren Einsatzzweck keine weiter bündelnden Spiegel und Streuungen werden in Kauf genommen. Aus der DE 20 2004 009 121 U1 ist ein Scheinwerfer bekannt, der eine Mehrzahl einzeln gefasster LED's aufweist, deren Licht durch Parabolspiegel und speziell ausgerichtete Streuscheiben gelenkt wird. Auch diese Anordnung ist zur scharfen parallelen Strahlbündelung ungeeignet und kommt für Fahrzeugscheinwerfer zum Einsatz.Reflector lamps with LEDs as the light source are known from the literature. So will in the DE 20 2006 004 481 U1 a lighting device is presented, which has an LED headlight from an array of individually lens-focused LEDs on a mast radiating upwards. Above the LED spotlight, a number of flat and partially movable mirrors are arranged, which reflect the light on a size and position determinable ground area. This lighting device is unsuitable for sharp parallel beam focusing and can be used as street lighting. It does not require any further focusing mirrors for its intended purpose and scatters are accepted. From the DE 20 2004 009 121 U1 For example, a headlamp is known which has a plurality of individually shaped LEDs whose light is directed by parabolic mirrors and specially oriented lenses. This arrangement is unsuitable for sharp parallel beam focusing and is used for vehicle headlights.

Nach einer weiteren vorteilhaften Weiterbildung des Reflektorstrahlers nach der Erfindung kann vorgesehen sein, dass der weitere Hohlspiegel linear ausgezogen ist und der kombinierte Reflektor zwei bis n Rotationsellipsoidenabschnitte aufweist, die um den ausgezogenen weiteren Hohlspiegel herum verteilt derart in der gemeinsamen Grundebene angeordnet sind, dass die außerhalb der Rotationsellipsoidenabschnitte liegenden Brennpunkte mit der linearen Brennlinie des ausgezogenen weiteren Hohlspiegels zusammenfallen. Durch die Verteilung der außerhalb liegenden Brennpunkte der Rotationsellipsoidenabschnitte auf die Brennlinie wird ein in der Breite ausgedehnter geformter Lichtstrahl erzielt. Darüber hinaus ist es möglich, durch Variation der Abmessungen der Rotationsellipsoidenabschnitte und ihrer nach Größe sortierten Anordnung um den weiteren Hohlspiegel herum, Lichtstrahlen unterschiedlicher Ausdehnung und Leuchtdichteverteilung zu erhalten. Wenn daher nach einer weiteren vorteilhaften Weiterbildung des Reflektorstrahlers nach der Erfindung vorgesehen ist, dass der weitere Hohlspiegel in seinem Durchmesser und seiner äußeren Form und sein Brennpunkt oder zumindest ein Punkt seiner Brennlinie um die Grundebene herum justierbar ist, kann eine noch weiter gehende Justierung des Lichtstrahls in Form, Richtungs- und Leuchdichteverteilung für die unterschiedlichsten Einsatzzwecke erzielt werden. Durch Verlagerung des Brennpunktes des weiteren Hohlspiegels aus der gemeinsamen Grundebene heraus kann zusätzlich zur Projektion ins unendliche ein konvergierender oder divergierender Lichtstrahl erzeugt werden. Dabei kann nach weiteren vorteilhaften Weiterbildungen des Reflektorstrahlers nach der Erfindung vorgesehen sein, dass die Justierung durch Handstellvorrichtungen oder durch motorische Stellvorrichtungen mit oder ohne Fernbedienung erfolgt.According to a further advantageous embodiment of the reflector emitter according to the invention can be provided that the further concave mirror is linearly extended and the combined reflector has two to n Rotationsellipsoidenabschnitte which are distributed around the extended further concave mirror around distributed in the common ground plane that the outside the focal ellipsoid lying focal points coincide with the linear focal line of the extended further concave mirror. By distributing the outward foci of the ellipsoid of revolution to the focal line, a latitudinally shaped shaped beam of light is achieved. Moreover, by varying the dimensions of the ellipsoidal ellipsoidal sections and their size-ordered arrangement around the further concave mirror, it is possible to obtain light beams of different dimensions and luminance distribution. Therefore, if it is provided according to a further advantageous embodiment of the reflector radiator according to the invention that the further concave mirror in its diameter and its outer shape and focus or at least a point of its focal line is adjustable around the ground plane around, can be an even more extensive adjustment of the light beam be achieved in shape, directional and luminous density distribution for a variety of applications. By shifting the focal point of the further concave mirror out of the common ground plane, a convergent or diverging light beam can be generated in addition to the projection into the infinite. It can be provided for further advantageous refinements of the reflector emitter according to the invention, that the adjustment is done by manual positioning devices or by motorized adjusting devices with or without remote control.

Außerdem kann nach weiteren vorteilhaften Weiterbildungen des Reflektorstrahlers nach der Erfindung vorgesehen sein, dass der Reflektorstrahler zumindest zweiteilig ausgeführt ist, wobei in einem Oberteil die Rotationsellipsoidenabschnitte und die Apertur und in einem Unterteil der weitere Hohlspiegel und die Lampenfassungen angeordnet sind und dass Ober- und Unterteil fest miteinander verbunden sind, wobei sowohl die Trennfuge zwischen Ober- und Unterteil als auch die Apertur, die eine transparente Abdeckung aufweist, nach außen abgedichtet sind. Die Trennung ist für die Herstellung des kombinierten Reflektors einerseits und für einen Lampentausch im Betrieb andererseits von Bedeutung. Für einen Einsatz unter Wasser ist eine Abdichtung der Trennfuge zwischen dem Ober- und Unterteil z.B. durch einen O-Ring oder eine dauerflexible Dichtmasse und der Apertur mittels eines im Oberteil dicht und gegebenenfalls druckfest eingesetzten Sichtfensters vorgesehen. Ferner kann vorgesehen sein, dass die Lichtquellen Licht gleicher oder unterschiedlicher Spektralbereiche abstrahlen. Mit einer solchen Ausführungsform kann durch Lichtmischung in der Entfernung die Lichtfarbe eingestellt werden. Weiterhin kann vorteilhaft vorgesehen sein, dass die Lichtquellen Halogenlampen oder Leuchstofflampen sind und dass die transparente Abdeckung der Apertur UV-Strahlung und/oder Infrarotstrahlung zurückhält. Jede Lichtquelle, für die in den Reflektor passende Größen zu bekommen sind, ist einsetzbar. Die transparente Abdeckung als Sichtfenster kann aus jedem transparenten Material bestehen, das eben oder gewölbt und gegebenenfalls druckfest auslegbar ist. Schließlich kann nach weiteren vorteilhaften Weiterbildungen des Reflektorstrahlers nach der Erfindung noch vorgesehen sein, dass die Hohlräume des elliptischen Spiegels und des weiteren Hohlspiegels transparent ausgegossen oder aus Vollmaterial sind und dass die Begrenzungsflächen bis auf die Durchtrittsflächen für die Lichtquellen und die Apertur verspiegelt sind.In addition, it can be provided according to the invention for further advantageous refinements of the reflector radiator that the reflector radiator is at least made in two parts, wherein in a shell the Rotationsellipsoidenabschnitte and the aperture and in a lower part of the further concave mirrors and the lamp sockets are arranged and that upper and lower part fixed are interconnected, with both the parting line between Upper and lower part and the aperture, which has a transparent cover, are sealed to the outside. The separation is important for the production of the combined reflector on the one hand and for a lamp replacement during operation on the other hand. For use under water, a sealing of the parting line between the upper and lower part is provided for example by an O-ring or a permanently flexible sealant and the aperture by means of a dense and optionally pressure-tight inserted in the top window. Furthermore, it can be provided that the light sources emit light of the same or different spectral ranges. With such an embodiment, by light mixing in the distance, the light color can be adjusted. Furthermore, it can advantageously be provided that the light sources are halogen lamps or fluorescent lamps and that the transparent covering of the aperture retains UV radiation and / or infrared radiation. Every light source, for which suitable sizes can be obtained in the reflector, can be used. The transparent cover as a viewing window can consist of any transparent material that is flat or curved and optionally pressure-resistant interpretable. Finally, according to further advantageous refinements of the reflector radiator according to the invention, it can also be provided that the cavities of the elliptical mirror and the further concave mirror are poured out or made of solid material and that the boundary surfaces are mirror-coated except for the passage surfaces for the light sources and the aperture.

Ausführungsbeispieleembodiments

Ausbildungsformen des Reflektorstrahlers nach der Erfindung werden nachfolgend zum weiteren Verständnis der Erfindung anhand der schematischen Figuren näher erläutert. Dabei zeigt

Figur 1
einen Reflektorstrahler mit zwei elliptischen Hohlspiegeln im Querschnitt,
Figur 2
ein Oberteil eines Reflektorstrahlers mit zwei elliptischen Hohlspiegeln in Sicht von unten,
Figur 3
ein Oberteil eines Reflektorstrahlers mit vier elliptischen Hohlspiegeln in Sicht von unten,
Figur 4
ein Oberteil eines Reflektorstrahlers mit zwei elliptischen Hohlspiegeln und einer ausgezogenen Apertur in Sicht von unten und
Figur 5
ein Oberteil eines Reflektorstrahlers mit zehn elliptischen Hohlspiegeln und einer ausgezogenen Apertur in Sicht von unten.
Embodiments of the reflector radiator according to the invention will be explained in more detail below for further understanding of the invention with reference to the schematic figures. It shows
FIG. 1
a reflector radiator with two elliptical concave mirrors in cross-section,
FIG. 2
an upper part of a reflector radiator with two elliptical concave mirrors seen from below,
FIG. 3
an upper part of a reflector radiator with four elliptical concave mirrors seen from below,
FIG. 4
a top of a reflector radiator with two elliptical concave mirrors and a solid aperture in view from below and
FIG. 5
a top of a reflector radiator with ten elliptical concave mirrors and a solid aperture in view from below.

Figur 1 zeigt einen Reflektorstrahler RS aus einem Oberteil RO mit zwei elliptischen Hohlspiegeln EH als Rotationsellipsoidenabschnitte RE und einer runden Apertur RA und einem Unterteil RU mit einem weiteren Hohlspiegel WH und den Lichtquellen LQ in den voneinander abgewandten Brennpunkten BA der elliptischen Hohlspiegel EH. Die einander zugewandten Brennpunkte BZ und der Brennpunkt BP des weiteren Hohlspiegels WH, die Schnittebenen SE der elliptischen Hohlspiegel EH und die Schnittebene SW des weiteren Hohlspiegels WH fallen in der gemeinsamen Grundebene GG zusammen. Die Öffnungen OE der elliptischen Hohlspiegel und die Öffnung OW des weiteren Hohlspiegels WH sind einander entgegengerichtet. Die runde Apertur RA ist zentral über dem weiteren Hohlspiegel WH angeordnet. Die Lichtquellen LQ in den voneinander abgewandten Brennpunkten BA senden Lichtstrahlen LS aus, deren Hauptanteil LH den elliptischen Hohlspiegel EH im zugehörigen Rotationsellipsoidenabschnitt RE treffen, von dort durch die einander zugewandten Brennpunkte BZ in den weiteren Hohlspiegel WH reflektiert werden und diesen anschließend alle als paralleles Bündel PB durch die runde Apertur RA verlassen. Der Restanteil LR der die Lichtquellen LQ verlassenden Lichtstrahlen LS wird innerhalb des Reflektorstrahler RS absorbiert oder tritt als Streustrahlung SS durch die runde Apertur RA aus dem Reflektorstrahler RS aus. Oberteil RO und Unterteil RU des Reflektorstrahler RS sind an der gemeinsamen Grundebene GG durch Verbindungselemente VE, hier als Schraubverbindungen SR durch Strich-Punkt-Linien angedeutet, fest miteinander verbunden und durch ein Dichtelement DE, hier als O-Ring-Dichtung OR angedeutet, gegen beispielsweise unter Druck anstehendes Wasser abgedichtet. An der runden Apertur RA ist der Reflektorstrahler RS durch eine transparente Abdeckung TA geschlossen, die ebenfalls gegen beispielsweise unter Druck anstehendes Wasser mittels eines Dichtelements DE, hier auch als O-Ring-Dichtung OA dargestellt, abgedichtet und durch einen mittels Verbindungselementen VE, hier als Schraubverbindungen SA durch Strich-Punkt-Linien angedeutet, fixierten Druckring DR im Oberteil RO gehalten wird. Die zum Betrieb des Reflektorstrahlers RS notwendige Energiequelle, beispielsweise als elektrische Zuleitung oder als Batteriefach ist hier nicht dargestellt. FIG. 1 shows a reflector radiator RS from an upper part RO with two elliptical concave mirrors EH as Rotationsellipsoidenabschnitte RE and a round aperture RA and a lower part RU with a further concave mirror WH and the light sources LQ in the opposite focal points BA of the elliptical concave mirror EH. The mutually facing focal points BZ and the focal point BP of the further concave mirror WH, the sectional planes SE of the elliptical concave mirror EH and the sectional plane SW of the further concave mirror WH coincide in the common ground plane GG . The openings OE of the elliptical concave mirror and the opening OW of the further concave mirror WH are opposite to each other. The round aperture RA is arranged centrally above the further concave mirror WH . The light sources LQ in the focal points BA facing away from each other emit light beams LS whose main component LH meet the elliptical concave mirror EH in the associated ellipsoid RE , from there through the mutually facing focal points BZ are reflected in the further concave mirror WH and then all this as a parallel bundle PB leave through the round aperture RA . The residual portion LR of the light beams LS leaving the light sources LQ is absorbed within the reflector emitter RS or emerges as stray radiation SS through the round aperture RA from the reflector emitter RS . Upper part RO and lower part RU of the reflector emitter RS are at the common ground plane GG through Connecting elements VE, here indicated as screw SR by dash-dot lines, firmly connected to each other and sealed by a sealing element DE, here as an O-ring seal OR , sealed against, for example, under pressure pending water. At the round aperture RA of the reflector emitter RS is closed by a transparent cover TA , which also against, for example, under pressure water by means of a sealing element DE, here also shown as O-ring seal OA , sealed and by means of fasteners VE, here as Screw connections SA indicated by dash-dot lines, fixed pressure ring DR is held in the upper part RO . The power source necessary for the operation of the reflector radiator RS , for example as an electrical supply line or as a battery compartment is not shown here.

Figur 2 zeigt ein Oberteil RO eines Reflektorstrahlers RS mit zwei elliptischen Hohlspiegeln EH in Sicht von unten. Die Darstellung entspricht der Schnittansicht entlang der Ebene A-B in Fig.1. Beide elliptischen Hohlspiegel EH als Rotationsellipsoidenabschnitte RE und die in ihrem Zentrum angeordnete runde Apertur RA sind sichtbar. Die Lage der Lichtquellen LQ im Unterteil RU sind gestrichelt angedeutet, ebenso die Lage des in diesem Ausführungsbeispiel gewählten Dichtungselements DE als O-Ring-Dichtung OR sowie die Aufnahmebohrungen für die Verbindungselemente VE als Schraubverbindungen SR. FIG. 2 shows a top RO of a reflector radiator RS with two elliptical concave mirrors EH in view from below. The illustration corresponds to the sectional view taken along the plane AB in FIG Fig.1 , Both elliptical concave mirrors EH as ellipsoidal sections of revolution RE and the round aperture RA arranged in their center are visible. The position of the light sources LQ in the lower part RU are indicated by dashed lines, as well as the position of the selected in this embodiment seal member DE as O-ring seal OR and the mounting holes for the connecting elements VE as screw SR.

Figur 3 zeigt ein Oberteil RO eines Reflektorstrahlers RS als ein Ausführungsbeispiel mit vier elliptischen Hohlspiegeln EH in Sicht von unten. Fehlende Bezugszeichen siehe Fig.2. FIG. 3 shows a top RO of a reflector radiator RS as an embodiment with four elliptical concave mirrors EH in view from below. Missing reference numbers see Fig.2 ,

Figur 4 zeigt ein Oberteil RO eines Reflektorstrahlers RS als ein Ausführungsbeispiel mit zwei elliptischen Hohlspiegein EH und einer ausgezogenen Apertur AA in Sicht von unten. Fehlende Bezugszeichen siehe Fig.2. FIG. 4 shows a top RO of a reflector emitter RS as an embodiment with two elliptical Hohlspiegein EH and a solid aperture AA in view from below. Missing reference numbers see Fig.2 ,

Figur 5 zeigt ein Oberteil RO eines Reflektorstrahlers RS als ein Ausführungsbeispiel mit zehn elliptischen Hohlspiegeln EH und einer ausgezogenen Apertur AA in Sicht von unten. Fehlende Bezugszeichen siehe Fig.2. FIG. 5 shows a top RO of a reflector emitter RS as an embodiment with ten elliptical concave mirrors EH and a solid aperture AA in view from below. Missing reference numbers see Fig.2 ,

BezugszeichenlisteLIST OF REFERENCE NUMBERS

AAAA
ausgezogenen Apertursolid aperture
BABA
voneinander abgewandte Brennpunktefoci facing away from each other
BPBP
Brennpunktfocus
BZBZ
einander zugewandte Brennpunktefoci facing each other
DEDE
Dichtelementsealing element
DRDR
Druckringpressure ring
EHEH
elliptischer Hohlspiegelelliptical concave mirror
GGGG
gemeinsame Grundebenecommon ground plane
LHLH
Hauptanteil der LichtstrahlenMain part of the light rays
LQLQ
Lichtquellelight source
LRLR
Restanteil der LichtstrahlenRemaining portion of the light rays
LSLS
Lichtstrahlenlight rays
OAOA
O-Ring-Dichtung AperturO-ring seal aperture
OEOE
Öffnungen der elliptischen HohlspiegelOpenings of the elliptical concave mirror
OROR
O-Ring-Dichtung Ober-/UnterteilO-ring seal upper / lower part
OWOW
Öffnung des weiteren HohlspiegelsOpening of the other concave mirror
PBPB
paralleles Bündelparallel bundle
RARA
runde Aperturround aperture
RERE
RotationsellipsoidenabschnittRotationsellipsoidenabschnitt
RORO
Oberteiltop
RSRS
Reflektorstrahlerreflector spotlight
RURU
Unterteillower part
SASA
Schraubverbindungenscrew
SESE
Schnittebenen der elliptischen HohlspiegelSection planes of the elliptical concave mirror
SRSR
Schraubverbindungen Ober-/UnterteilScrew connections upper / lower part
SSSS
Streustrahlungscattered radiation
SWSW
Schnittebene des weiteren HohlspiegelsCutting plane of the other concave mirror
TATA
transparente Abdeckungtransparent cover
VEVE
Verbindungselementefasteners
WHWH
weiterer Hohlspiegelanother concave mirror

Claims (13)

  1. Reflector radiator for generating a directed light beam with a combined reflector made up of at least one elliptical concave mirror in the shape of a rotation ellipsoid section, a further concave mirror, as well as an aperture and with a light source in a focal point of the rotation ellipsoid section, characterised in that
    - the rotation ellipsoid section RE is formed by a rotation ellipsoid sectioned between its central point and one of its focal points both in a longitudinal section plane running through both the focal points and through a cross-sectional plane arranged perpendicularly to the connecting line of the two focal points and
    - the further concave mirror WH is formed by any desired concave body having at least one focal point and sectioned in a sectional plane through the focal point,
    wherein
    - the longitudinal section plane of the rotation ellipsoid section RE and the sectional plane of the further concave mirror WH are arranged in a common base plane and
    - the concave mirror surfaces are arranged opposite one another and
    - the focal point lying outside the rotation ellipsoid section RE and the focal point of the further concave mirror WH coincide,
    and in that
    - the light source LQ is arranged in the focal point lying inside the rotation ellipsoid section RE and
    - the aperture RA is arranged perpendicularly above the further concave mirror WH.
  2. Reflector radiator according to Claim 1, characterised in that the light source LQ is a light-emitting diode.
  3. Reflector radiator according to any one of Claims 1 or 2, characterised in that the combined reflector has two to n rotation ellipsoid sections RE, which are arranged distributed around the further concave mirror WH in the common base plane in such a manner that the focal points lying outside the rotation ellipsoid sections RE coincide with the focal point or the focal line of the further concave mirror WH.
  4. Reflector radiator according to any one of Claims 1 or 2, characterised in that the further concave mirror WH is linearly extended and the combined reflector has two to n rotation ellipsoid sections RE, which are arranged distributed around the extended further concave mirror WH in the common base plane in such a manner that the focal points lying outside the rotation ellipsoid sections RE coincide with the linear focal line of the extended further concave mirror WH.
  5. Reflector radiator according to any one of Claims 3 or 4, characterised in that the further concave mirror WH can be adjusted in terms of its diameter and its external shape and its focal point or at least one point of its focal line can be adjusted around the base plane.
  6. Reflector radiator according to Claim 5, characterised in that the adjustment takes place manually or motively with or without a remote control apparatus by means of externally operable adjustment devices.
  7. Reflector radiator according to any one of Claims 1 to 6, characterised in that the reflector radiator is realised at least in two parts, wherein the rotation ellipsoid sections RE and the aperture RA are arranged in an upper part RO and the further concave mirror WH and receptacles for the light sources LQ are arranged in a lower part RU.
  8. Reflector radiator according to Claim 7, characterised in that upper and lower part RO, RU are securely connected to one another, wherein both the separating gap between upper and lower part RO, RU and the aperture RA, which has a transparent cover TA, are sealed with respect to the outside.
  9. Reflector radiator according to any one of Claims 1 to 8, characterised in that the light sources radiate light of the same or different spectral ranges.
  10. Reflector radiator according to any one of Claims 1 to 9, characterised in that the light sources LQ are halogen lamps or fluorescent lamps.
  11. Reflector radiator according to any one of Claims 1 to 10, characterised in that the transparent cover TA of the aperture RA suppresses UV radiation and/or infrared radiation.
  12. Reflector radiator according to any one of Claims 1 to 11, characterised in that the cavities of the elliptical mirror and of the further concave mirror are transparently cast or made from solid material.
  13. Reflector radiator according to Claim 12, characterised in that the boundary surfaces of the elliptical mirror and of the further concave mirror are mirrored as far as the passage areas for the light sources and the aperture.
EP07801332A 2006-09-15 2007-09-05 Reflector emitter Not-in-force EP2102546B1 (en)

Applications Claiming Priority (2)

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DE102006044019A DE102006044019B4 (en) 2006-09-15 2006-09-15 reflector spotlight
PCT/DE2007/001597 WO2008031405A1 (en) 2006-09-15 2007-09-05 Reflector emitter

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ATE508323T1 (en) 2011-05-15
US8083379B2 (en) 2011-12-27
JP2010503954A (en) 2010-02-04
DE502007007146D1 (en) 2011-06-16
DE102006044019A1 (en) 2008-03-27
WO2008031405A1 (en) 2008-03-20
EP2102546A1 (en) 2009-09-23
DE102006044019B4 (en) 2011-12-29
JP4954288B2 (en) 2012-06-13
US20100020538A1 (en) 2010-01-28

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