EP2102546A1 - Reflektorstrahler - Google Patents
ReflektorstrahlerInfo
- Publication number
- EP2102546A1 EP2102546A1 EP07801332A EP07801332A EP2102546A1 EP 2102546 A1 EP2102546 A1 EP 2102546A1 EP 07801332 A EP07801332 A EP 07801332A EP 07801332 A EP07801332 A EP 07801332A EP 2102546 A1 EP2102546 A1 EP 2102546A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- concave mirror
- reflector
- aperture
- focal point
- 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.)
- Granted
Links
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 proportion 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 in the first
- Focal point of the ellipse lies.
- 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.
- Reflectors are known from US 2003/0016539 A1, 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.
- FIG. 3 a car headlamp consisting of two opposing mirrors, the arrangement of elliptical and further spherical concave mirrors with the center of the spherical shell and the lamp in FIG first focal point of the ellipsoid one 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 Rotationsellipsoiden- section is formed from a both in the plane passing through the two focal points longitudinal section plane and by a perpendicular to the line connecting the two focal points arranged cross-sectional plane between its center and one of its focal points cut ellipsoids.
- the further concave mirror is cut from any, at least one focal point, cut in a sectional plane through the focal point
- 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 Rotationsellipsoiden- section 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 radiator 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.
- DE 20 2006 004481 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 headlight, a number of flat and partially movable mirrors are arranged, which reflect the light to 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.
- a headlamp is known, which has a plurality of individually set LED's whose light is directed by parabolic mirrors and specially oriented lenses.
- 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 Rotationsellipsoidenabête which are distributed around the extended further concave mirror around distributed in the common ground plane that the outside of the
- Rotationsellipsoidenabitese lying focal points coincide with the linear focal line of the extended further concave mirror.
- a latitudinally shaped shaped beam of light is achieved.
- the reflector radiator may be designed in at least two parts, the ellipsoid ellipsoid sections and the aperture in one upper part and the other in a lower part
- Concave mirror and the lamp holders are arranged and that the upper and lower part are firmly connected to each other, wherein 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 cover 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 emitter with two elliptical concave mirrors in FIG
- Figure 2 shows an upper part of a reflector radiator with two elliptical
- Figure 3 is an upper part of a reflector radiator with four elliptical
- Figure 4 is a top of a reflector radiator with two elliptical
- FIG. 1 shows a reflector radiator RS comprising an upper part RO with two elliptical hollow mirrors EH as ellipsoidal sections RE and a round aperture RA and a lower part RU with a further concave mirror WH and the light sources LQ in the focal points BA facing away from each other of the elliptical concave mirrors 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 one another emit light beams LS whose main component LH meet the elliptical concave mirror EH in the associated ellipsoid RE section, 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.
- a sealing element DE here also shown as O-ring seal OA
- fasteners VE here as Screw connections SA indicated by dash-dot lines
- Energy source for example as an electrical supply line or as a battery compartment is not shown here.
- FIG. 2 shows an upper part RO of a reflector emitter RS with two elliptical concave mirrors EH in view from below.
- the illustration corresponds to the sectional view along the plane A-B in Figure 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 location of the selected in this embodiment seal element DE as O-ring seal OR and the
- FIG. 3 shows an upper part RO of a reflector radiator RS as an exemplary embodiment with four elliptical concave mirrors EH in view from below. Missing reference numbers see Fig.2.
- FIG. 4 shows a top part RO of a reflector radiator RS as an exemplary embodiment with two elliptical concave mirrors EH and a solid aperture AA in view from below. Missing reference numbers see Fig.2.
- FIG. 5 shows a top part RO of a reflector radiator RS as an exemplary embodiment with ten elliptical concave mirrors EH and a solid aperture AA in view from below. Missing reference numbers see Fig.2.
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
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006044019A DE102006044019B4 (de) | 2006-09-15 | 2006-09-15 | Reflektorstrahler |
PCT/DE2007/001597 WO2008031405A1 (de) | 2006-09-15 | 2007-09-05 | Reflektorstrahler |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2102546A1 true EP2102546A1 (de) | 2009-09-23 |
EP2102546B1 EP2102546B1 (de) | 2011-05-04 |
Family
ID=38788371
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07801332A Not-in-force EP2102546B1 (de) | 2006-09-15 | 2007-09-05 | Reflektorstrahler |
Country Status (6)
Country | Link |
---|---|
US (1) | US8083379B2 (de) |
EP (1) | EP2102546B1 (de) |
JP (1) | JP4954288B2 (de) |
AT (1) | ATE508323T1 (de) |
DE (2) | DE102006044019B4 (de) |
WO (1) | WO2008031405A1 (de) |
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DE202006004481U1 (de) | 2006-03-21 | 2006-05-24 | Siteco Beleuchtungstechnik Gmbh | LED-Scheinwerfer und Beleuchtungssystem mit einem solchen Scheinwerfer |
-
2006
- 2006-09-15 DE DE102006044019A patent/DE102006044019B4/de not_active Expired - Fee Related
-
2007
- 2007-09-05 JP JP2009527690A patent/JP4954288B2/ja not_active Expired - Fee Related
- 2007-09-05 EP EP07801332A patent/EP2102546B1/de not_active Not-in-force
- 2007-09-05 US US12/440,765 patent/US8083379B2/en not_active Expired - Fee Related
- 2007-09-05 WO PCT/DE2007/001597 patent/WO2008031405A1/de active Application Filing
- 2007-09-05 DE DE502007007146T patent/DE502007007146D1/de not_active Expired - Fee Related
- 2007-09-05 AT AT07801332T patent/ATE508323T1/de active
Non-Patent Citations (1)
Title |
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See references of WO2008031405A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP4954288B2 (ja) | 2012-06-13 |
ATE508323T1 (de) | 2011-05-15 |
US20100020538A1 (en) | 2010-01-28 |
DE502007007146D1 (de) | 2011-06-16 |
JP2010503954A (ja) | 2010-02-04 |
DE102006044019A1 (de) | 2008-03-27 |
DE102006044019B4 (de) | 2011-12-29 |
EP2102546B1 (de) | 2011-05-04 |
WO2008031405A1 (de) | 2008-03-20 |
US8083379B2 (en) | 2011-12-27 |
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