EP1896771B1 - Scheinwerfer - Google Patents

Scheinwerfer Download PDF

Info

Publication number
EP1896771B1
EP1896771B1 EP06743180A EP06743180A EP1896771B1 EP 1896771 B1 EP1896771 B1 EP 1896771B1 EP 06743180 A EP06743180 A EP 06743180A EP 06743180 A EP06743180 A EP 06743180A EP 1896771 B1 EP1896771 B1 EP 1896771B1
Authority
EP
European Patent Office
Prior art keywords
reflector
light
lamp
facets
projector
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.)
Active
Application number
EP06743180A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1896771A2 (de
Inventor
Erwin Melzner
Volker Schumacher
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.)
Arnold and Richter KG
Arnold and Richter Cine Technik GmbH and Co KG
Original Assignee
Arnold and Richter KG
Arnold and Richter Cine Technik GmbH and Co KG
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 Arnold and Richter KG, Arnold and Richter Cine Technik GmbH and Co KG filed Critical Arnold and Richter KG
Publication of EP1896771A2 publication Critical patent/EP1896771A2/de
Application granted granted Critical
Publication of EP1896771B1 publication Critical patent/EP1896771B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • 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
    • 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

Definitions

  • the invention relates to a headlamp according to the preamble of claim 1.
  • the lamp is displaced in the axial direction relative to the reflector, so that for adjusting the Shape of the light field, the lamp is moved either in the reflector in the direction of the focus of the reflector to obtain a bundling of the light field, or away from the reflector away from the focus of the reflector to achieve an expansion of the light field.
  • a maximum concentration of the light is obtained when the lamp is located exactly in the focal point of the parabolic reflector, so that the exiting light rays emerge from the headlight substantially parallel to one another.
  • the lamp In a wide field of light, the lamp is in a front position in the reflector, and the exiting light rays behave convergent, ie they first compress and intersect in an area in front of the light exit opening of the headlamp and then run apart.
  • the distribution of the emerging light rays is often over the half-angle characterized.
  • a large half-beam angle stands for a wide field of light, while a small half-beam angle describes a strongly focused light field.
  • a headlamp of the above type usually has a high luminous efficacy.
  • the exiting light beams form a region of high light density due to their convergent beam path, so that the heat and UV stress in the vicinity of the headlight can be large.
  • the protective screen upstream lenses are necessary to effect a light field with an optimal light distribution for a range of half-angles. An optimization of the light field for a wide range of half-scattering angles is not possible with such an arrangement.
  • headlamps are used with a spherical reflector, a fixed at the center of curvature of the reflector lamp and a front mounted Fresnel lens.
  • the arrangement consisting of the reflector and the lamp is moved relative to the stepped lens, and in this way an expansion or bundling of the light field is achieved.
  • the optimum light field can be adjusted and continuously adjusted over a wide range of half-beam angles, but the headlamp usually has poor efficiency and, in particular for high-power headlamps, requires heavy stepped lenses to shape the emerging light beams.
  • a luminaire with a reflector which can be moved relative to a lamp to expand the light beam emerging from the reflector.
  • the rays emerging from the reflector are focused in a region in front of the reflector, while in a position in which the lamp is in the vicinity of the reflector's point, the rays emerge in a divergent manner from the reflector.
  • an illumination device with a faceted reflector which has an almost elliptical shape and preferably reflects a large proportion of visible light but only a small amount of infrared light.
  • the generated light beam has a relatively low energy density, so that the front area of the illumination device in size and weight can be significantly reduced.
  • the position of the reflector and the lamp to each other are not changeable, so that the light beam width can not be adjusted.
  • the WO 92/17733 discloses a so-called PAR lamp with a rotationally symmetric reflector having facets adapted to shape the generated light beam. An adjustability of the light beam width is not provided.
  • the invention has for its object to provide a headlight available that allows a desired light field for a wide range of half-angles and has a high efficiency.
  • the solution according to the invention provides a headlight in which a reflector is provided with facets forming a reflection surface for reflecting the light rays emitted by a lamp, the facets being formed by their surface shaping so that the light rays form a light field with a desired light distribution generate, whose beam width is adjustable by moving the reflector and / or the lamp in a wide range.
  • the solution according to the invention thus provides a headlamp which combines the advantages of a headlamp with a parabolic reflector and a headlamp with a spherical reflector, has a high light output, provided by the faceted reflector provides a desired light distribution for a wide range of adjustable light beam widths and thereby without additional scattering, lens, stepped disks or the like to make the shaping of the light beams.
  • the light beam width can be adjusted over a wide range while maintaining the desired light distribution in the headlight according to the invention.
  • the headlight is designed so that the light beam width of the exiting light descriptive half-angle varies between about 10 ° and 50 °.
  • the half-beam angle here denotes the aperture angle of the exiting light beams and is defined as the angular range in which the intensity of the light is equal to or greater than 50% of the maximum light intensity.
  • Such a headlamp is thus able to provide focused light fields with small half-beam angles or wide fields of light with large half-angle angles, wherein depending on the half-angle of the desired light distribution is generated.
  • This allows a variable usability of the headlamp, which serve both as an illuminating area light and as a focused spotlight and can be adjusted continuously during operation.
  • the headlamp is designed so that the light beams emerge from the headlamp in a divergent manner so as to avoid a region of high light and heat density - a so-called "hot spot" - in the area of the light exit opening of the headlamp and to reduce the risk of overheating of objects in the area of the headlamp.
  • the light rays then emerge almost parallel and form a light field with a small beam width, while in a wide field of light the rays run in a divergent manner out of the reflector and intersect only in the far field, without forming a region of high heat density in the vicinity of the headlight ,
  • a headlight such that the beam path of the exiting light beams takes place in a convergent manner.
  • the light beams to generate a wide field of light would first in condense and cross an area in front of the headlight and then diverge.
  • the formation of the faceted reflector ensures that the light beams are reflected in such a way that the desired light field is formed, ie, a suitable mixing of the light beams is achieved and the desired light intensity distribution is achieved becomes.
  • a light field with a uniform light distribution can be produced in this way without having to use separate components in the form of lenses and disks for this purpose.
  • the lamp and the reflector are arranged in a headlight housing, which has a light exit opening, which is covered by a light-transmitting cover, for example in the form of serving as a protective glass pane.
  • the headlight is designed so that the distance between the lamp and reflector along the reflector axis is reduced to widen the light beam width of the exiting light and is increased to reduce the light beam width.
  • the lamp is thus in a position in which it has a maximum distance from the reflector.
  • the beam is then widened and the light rays drift apart in a divergent manner.
  • the change of the distance can also be done in exactly the opposite way. In this case, the distance between the lamp and the reflector for focusing the light is reduced and, conversely, increased to widen the light.
  • the lamp is arranged stationary in the headlight, and the reflector is moved to adjust the light beam width along its reflector axis relative to the lamp.
  • the reflector In the case of the divergent beam path, it is necessary, on the one hand, for the reflector to be arranged in the immediate vicinity of the light exit opening of the headlamp in the case of expanded light distribution, so that the exiting light beams are not shaded by the housing.
  • the state of maximum light bundling in which the lamp is positioned far ahead in the reflector or even protrudes forward out of the reflector, a minimum distance to the protective glass must be maintained.
  • the lamp is fixed in the spotlight and the reflector for adjusting the beam width is moved along its reflector axis, ie for light expansion to the covered by the protective glass light exit opening of the headlamp and for light bundling is moved away from the light exit opening.
  • the distance between the lamp and the protective glass is constant regardless of the set light beam width, so that excessive heating of the protective glass by the lamp is avoided, regardless of the set beam width.
  • the arrangement has the added advantage that the stationary lamp also allows the high voltage cables required for powering the lamp and all other components such as a lamp socket, a lamp base and a cooling system coupled to the lamp to be rigidly fixed in the headlight.
  • the reflector of the headlamp may have an approximately paraboloidal or ellipsoidal basic shape, which is formed around a reflector axis substantially rotationally symmetrical. Deviations from the rotational symmetry can, however, result from the surface shaping of the facets arranged on the reflector.
  • the parabolic or ellipsoidal design of the reflector ensures that the headlight has a high luminous efficacy and thus a high degree of efficiency.
  • the reflector may have a first opening for receiving a lamp and a second opening as a light exit opening. Through the first opening, the lamp arranged on the headlight extends into the reflector, so that the light generated by the lamp is reflected by the reflector towards the second opening and leaves the headlight via the light exit opening provided on the headlight.
  • the first opening for receiving the lamp can in principle be arranged arbitrarily in the reflector. Preferably, however, the two openings are positioned so that they are spaced apart in the direction of the reflector axis and are aligned approximately parallel to one another and perpendicular to the reflector axis.
  • the first opening for receiving the lamp is arranged in the region of the apex of the parabolic or ellipsoidal reflector body, so that the lamp extends through the opening along the reflector axis in the reflector and the position of the lamp relative to the reflector along the reflector axis is variable by either the reflector or the lamp are moved along the reflector axis.
  • the second, serving as a light exit opening opening is axially spaced from the first opening of the reflector in the flared portion of the paraboloidal or ellipsoidal body of the reflector and aligned parallel to the first opening, so that in the direction of the reflector axis open parabolic or ellipsoidal reflector body is formed.
  • the reflection surface of the reflector is formed according to the invention of a plurality of facets.
  • the reflector is preferably divided along its circumference around the reflector axis into a multiplicity of sectors in which the facets are arranged. The sectors extend from the first opening of the reflector towards the second opening of the reflector which serves as the light exit opening and form columns of facets.
  • the columns of facets sectors are advantageously arranged to generate a likewise approximately rotationally symmetric light field so that they form a periodic structure along the circumference perpendicular to the reflector axis .
  • the reflector is then formed in a macroscopic view of the reflector body while rotationally symmetrical about the reflector axis.
  • a deviation from the rotational symmetry results from the surface structure of the facets, which creates a periodically formed surface structure of the reflector, in particular along the circumference around the reflector axis.
  • the facets with the reflector axis form concentric lines of identical facets, the facets being able to differ from line to line in terms of shape and orientation.
  • the facets forming the reflector are arched.
  • the surface shaping of the facets determines the scattering of the light rays and, moreover, causes the desired scattering to occur for a wide range of adjustable half-tone angles.
  • the facets have a concave contour in one spatial direction and a convex contour in another spatial direction.
  • the facets are designed so that they have a concave and in cross section senkecht to the reflector axis a convex contour in longitudinal section along the reflector axis and a transverse axis. In this way, an advantageous light distribution of the exiting light can be achieved, in which the light beams are mixed so that the desired light distribution is adjusted in the far field of the headlamp.
  • the exiting Light rays generate a light field with a desired optimum light distribution.
  • additional panes in particular lens panes, diffusing panes and / or stepped panes, in the region of the light exit opening of the headlamp.
  • the headlight according to the invention is used as a high-power lamp in the kW range, in which it can come to large heat generation due to the large converted services.
  • the components of the headlamp, in particular the reflector are designed to be heat resistant.
  • the facets forming the reflector may be wholly or partly formed from a heat-resistant material such as glass or glass ceramic and constructed in one or more layers.
  • a heat-resistant material such as glass or glass ceramic
  • the headlight also has a convective cooling device partially enclosing the lamp for generating a convection flow, which dissipates the heat emitted by the lamp.
  • the reflector can thereby have openings in the upper and lower regions of the reflector, which are created by complete or partial removal of individual facets and through which a cooling air flow generated by the convective cooling device the reflector can flow.
  • a recess can be provided in the reflector, which is formed by releasing a sector-shaped area of the reflector comprising one or more rows of facets or a sector-shaped area of one or more columns of facets.
  • the annular and / or column-shaped recess is in an advantageous embodiment by a radially spaced, formed from reflective facets section covered, the viewed from a possible lamp position on the reflector axis of the recess completely covers and extends approximately parallel to the surface of the reflector.
  • the section for covering the recess may be formed by a ring and / or sector enlarged in its dimensions relative to the area recessed in the reflector, wherein the ring or the sector of facets is designed in such a way that it protrudes from the reflector axis or behind the actual surface of the reflector is arranged. In this way, an interruption in the reflector for the penetration of the cooling air flow is created at the same time optically almost unchanged reflector arrangement, so that the light losses caused by the recess are minimized.
  • FIG. 1 shown front view and the in FIG. 2 shown side partial sectional view of a headlamp show a headlamp housing 1
  • the central region 10 is formed substantially cylindrical and whose front portion 11 of the contour of a reflector 3 is adjusted.
  • the headlight has a convective cooling device 4, which diverts the heat emitted by a lamp 2 targeted to the upper region of the headlight housing 1 to generate a convection flow and thus protects the inside of the headlight housing 1 components from excessive heat load.
  • the light-emitting front side of the headlight housing 1 is closed off by a cover element 5 in the form of a glass pane or a lens disk serving as a protective pane.
  • the reflector 3 is arranged in the front region of the headlight housing 1 and partially enclosed by the convective cooling device 4.
  • the reflector 3 In the area of the lamp base 20, the reflector 3 has a first opening 31, through which the lamp 2 fixed to the lamp base 20 extends into the interior of the reflector 3 along the reflector axis of the reflector 3.
  • the lamp 2 generates to the reflector axis rotationally symmetrical light rays, which are reflected by the reflector 3 to a second opening 32 of the reflector 3 out and leave the headlight through the translucent cover 5.
  • the lamp 2 is arranged in the interior of the reflector 3 and thereby connected in a stationary manner via the lamp cap 20 to the spotlight housing 1.
  • the reflector 3 is displaceable along the reflector axis, so that the position of the reflector 3 and the lamp 2 can be changed relative to one another by displacing the reflector 3.
  • the reflector 3 is moved away from the cover element 5 into a rear position, so that the lamp 2 is in a front position in the reflector 3.
  • the reflector 3 With a wide field of light, that is, a large light beam width, the reflector 3 is displaced toward the cover element 5, and the lamp 2 assumes a position close to the vertex of the reflector 3.
  • the reflector 3 is infinitely displaceable, so that the light beam width is infinitely adjustable in a range of half-beam angles between about 10 ° and 50 °.
  • the Figures 3 and 4 show views of the reflector 3, in which the reflector 3 on the one hand to a transverse plane perpendicular to the reflector axis ( FIG. 3 ) and on the other to a formed by the reflector axis and a transverse axis perpendicular to the reflector axis longitudinal plane ( FIG. 4 ) is projected.
  • the reflector 3 has a paraboloidal, rotationally symmetrical basic shape and is formed from individual facets 33 which, viewed from the reflector axis, have a convex shape in cross-section perpendicular to the reflector axis ( FIG. 3 ) and which are concave in longitudinal section along the reflector axis and a transverse axis ( FIG. 4 ).
  • the facets 33 are thus shaped so that they form a transverse to the reflector axis pointing towards the belly and at the same time are curved in a concave manner in longitudinal section viewed from the reflector axis.
  • the facets 33 are arranged on the reflector 3 in a plurality of sectors 34, which extend from the first opening 31 of the reflector 3, through which the lamp 2 is guided into the interior of the reflector 3, to the second opening 32 of the reflector 3 and broaden outwards.
  • the uniform arrangement of the facets 33 in the individual sectors 34 results in a division of the facets 33 into columns and rows, wherein the columns extend along the sectors 34 and the rows extend perpendicular thereto along the circumference around the reflector axis.
  • the facets 33 in a row resemble each other in shape and size, so that along each line a periodic structure formed from the juxtaposition of the facets 33 is formed.
  • the facets 33 in different lines may differ in shape and size.
  • the reflector 3 is formed so that in the inner lines, ie the first opening 31 of the reflector 3 back, the faceting of the reflector 3 according to the angle division into sectors becomes narrower.
  • the facets 33 are designed with respect to curvature and arrangement so that they produce an optimal light field distribution.
  • the facets 33 of the reflector 3 according to FIG. 3 and FIG. 4 are arranged in five rings 35a-35e, which are concentric to the reflector axis and each have a concave shape in a longitudinal section along the reflector axis and a transverse axis, as seen from FIG. 4 evident.
  • the individual rings 35a-35e consist at least partially of several facet lines, wherein the division to the first, the lamp 2 receiving opening 31 is narrowed towards and increasing the number of lines per ring inward.
  • the reflector 3 is arranged displaceably in the headlight housing 1 along a direction of displacement V pointing parallel to the reflector axis and is displaced relative to the lamp 2 fixed in the lamp base 20 in order to adjust the light beam width of the emergent light.
  • FIGS. 5a and 5b show schematic sectional views of the reflector 3 in relative to the lamp 2 different positions.
  • the reflector 3 is moved away from the cover 5 away to the rear, so that the lamp 2 is in a front position in the reflector 3.
  • This relative position of the lamp 2 to the reflector 3 causes a collimated light field in which the half-beam angle describing the light beam width is small and the light beams L emerge from the reflector 3 almost parallel to one another.
  • the reflector 3 In order to widen the light beam width, the reflector 3 is pushed forward toward the cover element 5, so that the lamp 2 is moved to a position close to the vertex of the reflector 3. This state is shown in FIG. 4 b, in which a wide light field having a large half-beam angle results because the reflector 3 is displaced into a front position in the headlight close to the cover element 5.
  • the reflector 3 is faceted to produce a desired light distribution without the use of additional lens, scatter or stepped wheels.
  • Each individual facet 33 absorbs light and generates a reflected radiation field, wherein the light rays emanating from the facets 33 mix and overlap in the far field in such a way that the desired light distribution in the far field is created. Due to the fact that it is possible to dispense with additional disks for shaping the emergent light field, the light losses that inevitably accompany the use of such disks are also avoided, so that the arrangement can be designed with lower overall losses than conventional headlamps.
  • the reflector 3 Due to the curved facets 33, the reflector 3 with its composed of the individual facets 33 reflection surface on no real focus.
  • the lamp 2 In the state of maximum light bundling (see FIG. 5a However, the lamp 2 is in a quasi-focal point, so that the outgoing of the lamp 2 and reflected by the facets 33 light beams L emerge almost parallel from the headlight.
  • This quasi-focal point corresponds to the focal point of the rotationally symmetrical, paraboloidal basic shape of the reflector 3, neglecting the local surface curvature caused by the individual facets 33.
  • the position of the lamp 2 relative to the reflector 3 is then changed so that the distance between the reflector 3 and lamp 2 is smaller, the lamp 2 is thus moved from the Quasibrenntician to the reflector 3.
  • the reflector 3 can be arranged stationary in the headlight and the lamp 2 are moved to adjust the light beam width.
  • the mode of operation of the headlamp is not affected. It is also conceivable to form convergent the beam path of the headlamp, so that the light rays L exiting initially condense in a region in front of the headlight housing 1 and only then diverge when the light field is wide.
  • the reflector 3 is displaced to the rear for widening the light field, that is, the lamp is moved into a front, the quasi-focal point of the reflector upstream position in the reflector 3, while for bundling the outgoing light of the reflector 3 to the rear is moved to bring the lamp 2 in the quasi-focal point of the reflector.
  • the formation of the facets 33 causes a mixing of the light beams L and accordingly generates a desired light field, without additional components would be required in the form of slices.
  • the headlamp can be used in particular as a high-performance headlamp with power in the kW range. Due to the large converted services, it comes with such headlights to great heat development, so that the components of the headlight must be made resistant to heat.
  • this relates to the reflector 3, the facets 33 in areas where the reflector 3 is particularly strongly heated, is made of special, heat-resistant materials such as glass or glass ceramic.
  • the reflector 3 reflects a large part of the light output in the area of the inner facet rings 35a, so that heating occurs in particular there and the facets 33 must be made heat-resistant in this area. In the outer areas 35d, 35e such measures are not required, so that there the facets 33 can be made of a favorable material, such as metal-coated glass.
  • a convective cooling device 4 For cooling the headlamp a convective cooling device 4 is provided, which the reflector 3, as from FIG. 2 visible, partially enveloped.
  • the convective cooling device 4 generates a vertical flow of cooling air which dissipates the heat and transports it upwards in the headlight and out of the headlight.
  • 3 openings may be provided in the upper and lower regions of the reflector, which are created by the fact that individual facets 33 are omitted completely or partially. In this way, channels are created through which a vertical flow of cooling air can dissipate heat from the bottom to the top through the reflector 3 and out of the reflector 3.
  • the reflection of the light rays at the reflector 3 is not significantly affected by the creation of the openings in the reflector 3, since the reflected light power is approximately proportional to the total area of the reflector 3 and the openings are small compared to the total surface of the reflector 3. The light distribution in the far field is thus not affected by such measures.
  • a reflector is shown in which an annular recess 36 in the surface of the reflector 3 is covered by a ring 35b 'of facets 33, the ring 35b' being formed of multiple facet lines, an enlarged diameter and a greater height than the reflector 3 has in the region of the recess 36 and thus viewed from the reflector axis from behind the actual reflector 3 is arranged.
  • a reflector arrangement is provided with a recess 36, in which, for example, a cooling air flow into the interior of the reflector 3 and can penetrate through the reflector 3 and at the same time the optical behavior of the reflector 3 is not significantly impaired.
  • reflector 3 is a recess 36, for example, created for a cooling flow by a sector-shaped range of facets 33 of the reflector 3 is released and arranged by a radially spaced, viewed from the reflector axis from behind the actual reflector 3 Sector 34 'is covered.
  • the sector 34 ' is formed by a plurality of columns of facets 33 and extends substantially parallel to the original surface of the reflector 3 in the region of its recess 36.
  • the sector 34 'on the one hand in its height along the reflector axis and in the radial direction is increased perpendicular to the reflector axis and on the other from the reflector axis outwardly viewed, that is offset in the radial direction relative to the actual reflector 3.
  • the sector 34 ' may additionally be formed along the circumference of the reflector 3 perpendicular to the reflector axis so that it overlaps in the circumferential direction of the sectors 34' adjacent sectors.
  • a recess 36 by means of which an effective cooling of the reflector 3 and the lamp 2, which is arranged in the interior of the reflector 3 and enclosed by this, is possible, wherein the formation and the spatial arrangement of a portion to cover the Recess 36 forming sector 34 'or ring 35b' the light output and light distribution of the headlamp is not significantly affected, so that the headlamp has a comparable efficiency as an arrangement with a closed reflector 3.
  • FIGS. 6a, 6b and 7a, 7b not drawn to scale and in particular the radial distance between serving to cover the recess 36 portion 34 ', 35b' and the reflector 3 may be smaller than shown.
  • the reflector 3 according to the FIGS. 6a, 6b and 7a, 7b can be effected by an altered design of the facets 33 with respect to their curvature and their arrangement in the ring 35b 'or the sector 34', that the generated light distribution of the recess 36 provided with the reflector 3 is comparable to the light distribution of a reflector 3 without recess 36th
  • the invention is explained here with reference to a headlamp with a divergent beam path has been used, which uses a faceted reflector 3 to form the light field. But it is also possible to produce a headlight with a convergent beam path, which also has a desired light distribution through the formation of the faceted reflector 3 for a wide range of adjustable half-beam angles.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Projection Apparatus (AREA)
EP06743180A 2005-06-22 2006-06-19 Scheinwerfer Active EP1896771B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005029669A DE102005029669A1 (de) 2005-06-22 2005-06-22 Scheinwerfer
PCT/EP2006/005951 WO2006136388A2 (de) 2005-06-22 2006-06-19 Scheinwerfer

Publications (2)

Publication Number Publication Date
EP1896771A2 EP1896771A2 (de) 2008-03-12
EP1896771B1 true EP1896771B1 (de) 2009-01-07

Family

ID=36968993

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06743180A Active EP1896771B1 (de) 2005-06-22 2006-06-19 Scheinwerfer

Country Status (5)

Country Link
US (1) US8366277B2 (ja)
EP (1) EP1896771B1 (ja)
JP (1) JP5048662B2 (ja)
DE (2) DE102005029669A1 (ja)
WO (1) WO2006136388A2 (ja)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008009013B3 (de) * 2008-02-13 2009-08-20 Erco Gmbh Leuchte und Reflektorelement, insbesondere zur Ausleuchtung von Gebäudeflächen
US20090207616A1 (en) * 2008-02-18 2009-08-20 Erco Leuchten Gmbh Light fixture for illuminating building surfaces
US20100246185A1 (en) * 2009-03-31 2010-09-30 Robe Lighting S.R.O. Light collection system for a luminaire
CN102720982B (zh) * 2011-03-29 2015-03-18 海洋王照明科技股份有限公司 一种光束角可调投光灯
DE102012212504A1 (de) * 2012-07-17 2013-06-27 Osram Gmbh Halbleiter-Leuchtvorrichtung mit Hohlreflektor mit mehreren Reflektorsementen
CN103574328A (zh) * 2012-07-31 2014-02-12 欧司朗股份有限公司 照明装置
DE102012017262A1 (de) * 2012-08-31 2014-03-06 Volkswagen Aktiengesellschaft Leuchtvorrichtung für ein Fahrzeug
CN103851362A (zh) * 2012-11-30 2014-06-11 海洋王（东莞）照明科技有限公司 灯具及其反射器
CN104344355A (zh) * 2013-08-08 2015-02-11 欧司朗股份有限公司 具有变焦功能的发光装置
US20160174343A1 (en) * 2014-11-19 2016-06-16 Production Resource Group, Llc LED Retrofit Assembly
DE102017113728A1 (de) * 2017-06-21 2018-12-27 Automotive Lighting Reutlingen Gmbh Kraftfahrzeugscheinwerfer

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2019999B (en) 1978-04-26 1982-03-24 Rank Organisation Ltd Spotlight lantern projection system
US4841422A (en) * 1986-10-23 1989-06-20 Lighting Technology, Inc. Heat-dissipating light fixture for use with tungsten-halogen lamps
DE3812232A1 (de) 1988-04-13 1989-10-26 Thorn Licht Gmbh Leuchtenstrahler
US5272408A (en) * 1991-05-09 1993-12-21 Gte Products Corporation Lamp and reflector assembly
DE69130738T2 (de) 1991-04-03 1999-09-02 Flowil Int Lighting Reflektor mit lampe
US5345371A (en) * 1992-11-05 1994-09-06 Cunningham David W Lighting fixture
JPH06338209A (ja) * 1993-05-27 1994-12-06 Alps Electric Co Ltd 照明装置
JPH0845316A (ja) * 1994-07-29 1996-02-16 Toshiba Lighting & Technol Corp 反射体及び反射体付光源
JP3193889B2 (ja) * 1997-06-18 2001-07-30 株式会社小糸製作所 車輌用灯具
DE19837501A1 (de) * 1997-08-13 1999-10-07 Olaf Schierenberg Scheinwerfer für Bühnen-, Film- und Studioanwendungen mit maximaler Trennung von sichtbarer und unsichtbarer Strahlung zur Verringerung der Belastung durch nicht sichtbare Strahlungsanteile
JPH11258566A (ja) 1998-03-10 1999-09-24 Hitachi Ltd 液晶プロジェクタの光源装置
AUPP422498A0 (en) * 1998-06-19 1998-07-09 Eveready Battery Company Inc. A lighting device
DE19843986B4 (de) * 1998-09-25 2012-02-23 Automotive Lighting Reutlingen Gmbh Scheinwerfer für Fahrzeuge
DE19910192C2 (de) 1999-03-09 2002-04-04 Schott Auer Gmbh Reflektor mit einem konkaven rotationssymmetrischen Grundkörper und einer Facetten aufweisenden Reflexionsfläche
DE29924453U1 (de) 1999-03-09 2004-02-12 Schott Spezialglas Gmbh Optisches Design für einen Reflektor zum Reflektieren von Lichtstrahlen
US6390649B1 (en) * 1999-05-06 2002-05-21 Shih-Chuan Tang Projector light having adjustable light beam
DE10017658A1 (de) * 2000-04-08 2001-10-11 Bosch Gmbh Robert Scheinwerfer für Fahrzeuge zur Aussendung unterschiedlicher Lichtbündel
EP1462713B1 (en) * 2000-06-20 2006-01-25 Marumo Electric Co., Ltd. Lighting device
DE10113385C1 (de) * 2001-03-16 2002-08-29 Schott Glas Stufenlinsenscheinwerfer
US6979107B1 (en) * 2003-08-13 2005-12-27 Lusa Lighting, Inc. Puck lighting fixture

Also Published As

Publication number Publication date
WO2006136388A3 (de) 2007-03-08
DE102005029669A1 (de) 2007-01-11
EP1896771A2 (de) 2008-03-12
DE502006002594D1 (de) 2009-02-26
JP5048662B2 (ja) 2012-10-17
US8366277B2 (en) 2013-02-05
US20080198605A1 (en) 2008-08-21
JP2008544321A (ja) 2008-12-04
WO2006136388A2 (de) 2006-12-28

Similar Documents

Publication Publication Date Title
EP1896771B1 (de) Scheinwerfer
EP0391287B1 (de) Operationsleuchte
EP2063170B1 (de) Beleuchtungsvorrichtung für ein fahrzeug
EP1864053B1 (de) Kfz-scheinwerfer
DE102008001164B4 (de) Linsenanordnung
EP2789901B1 (de) Lichtmodul einer Kraftfahrzeugbeleuchtungseinrichtung
DE102013225950B4 (de) Kraftfahrzeugbeleuchtungseinrichtung
EP3012521B1 (de) Leuchte für ein kraftfahrzeug
DE102006045446B4 (de) Fahrzeugleuchte
EP1548358A1 (de) Stufenlinsenscheinwerfer mit gekoppelter Abstandsveränderung lichttechnischer Elemente
DE102004013962A1 (de) Stufenlinsenscheinwerfer mit gekoppelter Abstandsveränderung lichttechnischer Elemente
EP1548357B1 (de) Stufenlinsenscheinwerfer
DE602004012797T2 (de) Beleuchtungs- oder Signalisierungssystem für Fahrzeuge
EP3449299B1 (de) Leuchtenoptik
EP3086025A1 (de) Abstrahleinheit für eine operationsleuchte
DE102012003071B4 (de) Reflektorstrahler
DE102014226668A1 (de) Leuchtvorrichtung
EP1363068A2 (de) Fahrzeugleuchte mit einem Leuchtmittel und einem hohlen oder becherförmigen Reflektor
WO2019149893A1 (de) Vorrichtung zur erzeugung von licht
DE102009058308B4 (de) Reflektor für Leuchten mit Ellipsoid-Facetten
DE19940207B4 (de) Reflektorsystem zum Führen von Licht unter kleinen Einfallswinkeln
EP4264129A1 (de) Scheinwerfer
DE202016104672U1 (de) Kraftfahrzeugleuchte mit einem linienförmige Facetten aufweisenden Reflektor
EP2348250A1 (de) Linienförmige LED-Leuchte, insbesondere LED-Ringleuchte
AT228661B (de) Scheinwerfer

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: 20080119

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

DAX Request for extension of the european patent (deleted)
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): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 502006002594

Country of ref document: DE

Date of ref document: 20090226

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: 20091008

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502006002594

Country of ref document: DE

Representative=s name: ISARPATENT - PATENT- UND RECHTSANWAELTE BARTH , DE

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

Ref country code: FR

Payment date: 20230621

Year of fee payment: 18

Ref country code: DE

Payment date: 20230620

Year of fee payment: 18

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

Ref country code: IT

Payment date: 20230630

Year of fee payment: 18

Ref country code: GB

Payment date: 20230622

Year of fee payment: 18