EP3239594B1 - Optique auxiliaire pour une source lumineuse destinée à produire une surface d'éclairage bifurqué - Google Patents

Optique auxiliaire pour une source lumineuse destinée à produire une surface d'éclairage bifurqué Download PDF

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Publication number
EP3239594B1
EP3239594B1 EP17166533.4A EP17166533A EP3239594B1 EP 3239594 B1 EP3239594 B1 EP 3239594B1 EP 17166533 A EP17166533 A EP 17166533A EP 3239594 B1 EP3239594 B1 EP 3239594B1
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EP
European Patent Office
Prior art keywords
light
optical elements
optical
light exit
another
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EP17166533.4A
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German (de)
English (en)
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EP3239594A1 (fr
Inventor
Martin Moser
Markus Ecker-Endl
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ZKW Group GmbH
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ZKW Group GmbH
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    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • 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
    • F21V7/0091—Reflectors for light sources using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/322—Optical layout thereof the reflector using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/241—Light guides characterised by the shape of the light guide of complex shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/31—Optical layout thereof
    • F21S43/315—Optical layout thereof using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/15—Strips of light sources
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • 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 an optical attachment for a light source for generating a branched luminous surface.
  • the invention relates to a light module for a motor vehicle headlight, which light module comprises at least one light source and an attachment lens of the attachment lens of the initially mentioned type assigned to at least one light source.
  • the invention relates to a motor vehicle headlight with such a light module or with a lens attachment mentioned at the beginning.
  • the invention also relates to a motor vehicle with at least one motor vehicle headlight of this type.
  • the use of light guides to produce linearly extended, branched luminous surfaces has proven particularly useful in practice. It is known that the light guides can be bent or curved to a certain extent, without the emergence of light at the bending point or in the curved sections. In addition, it is possible to let the light exit from a light guide in a targeted manner at one or more specified point (s). If the light occurs, for example, at several points on a curved light guide, it occurs for an observer the impression of a homogeneously glowing, curved, uninterrupted line. A disadvantage of using the light guides is that they are made in one piece.
  • a light guide or a light guide arrangement is developed and manufactured for each signal light module, which can only be used to a very limited extent, if at all, for other signal light modules.
  • Another known disadvantage of light guides is that they can only be bent or curved to a certain extent. Above a certain angle or radius of curvature, large light losses can occur at the bending point or in the curved section as a result of light escaping from the light guide. This often has the consequence that the desired luminous impression, for example a homogeneously luminous, curved thin strip, is no longer achieved.
  • One possible measure to counter the problem is not to bend the light guide.
  • the object of the present invention is therefore to create an attachment lens that eliminates the above-mentioned disadvantages of the prior art and provides an attachment lens, for example for a motor vehicle headlight module, which can be constructed in a modular manner, can be bent at will and essentially without loss of light and makes a homogeneous light impression on the observer when light passes through the ancillary optics.
  • the optical attachment comprises at least a plurality of light-guiding optical elements, each light-guiding optical element having a light entry area, a light exit area and a lateral surface, the lateral surface connecting the light entry area and the light exit area, the light exit area connecting the light entry area opposite and is assigned to a light exit surface, which light exit surface is delimited by a circumferential delimitation line, the delimitation line adjoining the light exit area, and the optical elements are strung together in such a way that the light exit surfaces of all optical elements lie in a common, essentially flat surface, with each optical element having a number (one, two or more) of nearest neighbors (nearest neighbor elements), its boundary line being a Number (one, two or more) of sections which are each assigned to a section of the boundary line of a nearest neighbor, sections assigned to one another lying against one another and having curves corresponding to one another.
  • a “substantially planar surface” is understood to mean a surface that can also be curved / arched, the variable characterizing this curvature / arching (eg a radius of curvature) being large or small compared to a characteristic variable, for example the diameter of the Light exit surface of the optical element, for example the radius of curvature / the curvature is large / small compared to the diameter of the light exit surface of the optical element.
  • An optical attachment can be designed, for example, as an optical element system which comprises a plurality of optical elements of the type mentioned above and can be placed in front of one or more light sources or light-sensitive elements.
  • the term light entry area is understood to mean an area which is available for the light generated by one or more light sources and directed onto the ancillary optics to penetrate the respective light-guiding optical element. In this case, the light that does not strike the light entry areas essentially does not penetrate the ancillary optics.
  • the term light exit area is understood to mean an area from which the light that has penetrated through the corresponding light entry area and propagates essentially without losses in the light-guiding optical element exits. Only a small amount of light can emerge through the jacket surface connecting the light entry area and the light exit area.
  • the term is understood to mean a small amount of light, an amount of light that essentially does not influence the light image produced using the ancillary optics.
  • the light exit area is assigned to a light exit area.
  • the light exit surface is an imaginary surface which is oriented essentially perpendicular to the optical axis of the optical element and which is delimited and along a circumferential boundary line this boundary line is adjacent to the light exit area.
  • the light exit surface can be planar or arched / curved, the radius of curvature of the light exit surface being large compared to the characteristic size of the optical element.
  • the light exit area is assigned to the light exit area in such a way that all of the light exiting through the exit area passes through the light exit area.
  • the characteristic size of an optical element is understood to mean a diameter of its light exit surface.
  • the definition of a diameter is to be understood in a generalized sense, ie in the sense of a diameter of a set in a metric space.
  • the optical elements are arranged in a row in such a way that the distance between nearest neighbors is small compared to the characteristic size of the neighbors, preferably negligibly small.
  • neighbor is always understood to mean the closest neighbor (s), unless expressly stated otherwise.
  • the common surface of the light exit surfaces of the individual optical elements can, for example, be planar or curved / arched (convex / concave as intended) and has a small curvature compared to a characteristic size of the optical elements.
  • the ancillary optics having a plurality of optical elements has the technical effect that the ancillary optics have a modular structure and can thus be tailored to the technical and / or design requirements of the tree.
  • the modularity of the optical attachment means that its shape can be varied very quickly by exchanging / replacing / adding individual optical elements and / or entire optical element modules.
  • the inventive way of lining up the individual optical elements ensures that when the light shines through the entire ancillary optics, a homogeneous luminous impression is created and the ancillary optics looks as a whole without the individual optic elements and / or light sources being perceptible.
  • the front optics can be used to achieve a particularly homogeneous light impression, which results, for example, by reducing the constrictions of the overall light exit surface.
  • the outer surface has a number of areas which are each assigned to an area of the outer surface of a nearest neighbor, with areas assigned to one another lying on top of one another and corresponding surface profiles exhibit.
  • the constrictions of a, for example, branched overall light exit surface resulting from the juxtaposition of the optical elements can be reduced and a better light impression can be obtained.
  • the outer surface has a number of areas which are each assigned to an area of the outer surface of a closest neighbor, with mutually adjacent areas being designed to be congruent to one another.
  • At least one section is arcuate.
  • the at least one arcuate section is curved inward of the light exit surface, ie in the direction of the interior of the light exit surface.
  • the optical element can bear against its closest neighbor, for example in a pivotable / rotatable manner about an axis.
  • the curved section of the optical element that is curved in the direction of the inside of the light exit surface can be assigned a curved section of the nearest neighbor which is on the outside in the direction of the light exit surface and corresponds to this. It is particularly advantageous if the arcuate section is, for example, an arc of a circle is trained.
  • the radius of the circle can be selected in such a way that the optical element and the corresponding closest neighbor can be pivoted and / or rotated relative to one another about an axis running through the center of the circle perpendicular to the circular surface.
  • the axis runs essentially parallel to the optical axes of both optical elements.
  • At least one section is designed as a straight line.
  • the lining up of the sections designed as a straight line has the advantage, for example, that the constrictions of a, for example, rectilinearly aligned total light exit surface are reduced and a more homogeneous luminous impression (of, for example, rectilinearly aligned stripes) is achieved as a result.
  • all optical elements are designed essentially the same. In this way, all optical elements can be produced, for example, by an injection molding process using a single tool.
  • each optical element lined up in a row form a chain, with each optical element being at predetermined angles with respect to its neighboring optical elements. It is conceivable that each optical element is at a different angle to each of its neighboring optical elements.
  • the chain is branched.
  • the chain has at least one loop.
  • a motor vehicle headlight module In order to be able to surround, for example, a motor vehicle headlight module with the front optics, it can be opportune if the chain is closed in a ring shape, in particular in an O shape.
  • the optical elements can be designed as TIR lenses (abbreviation for Total Internal Reflection), preferably as TIR lenses that are rotationally symmetrical (about the optical axis of the lens).
  • TIR lenses With TIR lenses, a light beam directed essentially parallel to the optical axis of the lens can be generated and the homogeneity of the emitted light can be increased even further.
  • the lateral surfaces have a plurality of upholstery optics. It can be advantageous here if at least some of the upholstery optics are arranged on each side of the lateral surfaces facing a closest neighbor.
  • the term upholstery optics is understood to mean an optical element, for example a lens, which has a significantly smaller characteristic size than the characteristic size of the optical element and which can be set up, for example, by penetration and / or scattering the lateral surface and / or a transmission generated by the lateral surface, that is, to direct the light that does not propagate parallel to the optical axis of the optical element, essentially parallel to the optical axis.
  • Such upholstery optics can, for example, be designed as small elevations on the lateral surface and from the same material, which is preferably optically denser than air, as the corresponding optical element.
  • an air gap can be created between the adjacent optic elements of the ancillary optics, which is small compared to the size of the optic element.
  • the at least one part of the upholstery optics touches the outer surface of the closest neighbor.
  • the optical elements lined up in a row are spaced apart from one another.
  • a small (compared to the characteristic size of the optical element) spacing of the optical elements, ie that the optical elements do not touch, of the ancillary optics has the advantage that when the ancillary optics are used in a mechanically movable environment, such as in a motor vehicle headlight there is no wear and no impairment of the optical properties of the individual optical elements, for example due to friction and / or mutual impact.
  • an adhesive layer is provided between the aligned optical elements, which adhesive layer connects each optical element to its nearest neighbors.
  • a light module for a motor vehicle headlight in that essentially all of the light generated by the at least one light source enters the ancillary optics through the light entry areas and, preferably essentially without losses, exits the light exit areas of the ancillary optics .
  • the term light source should not be interpreted too narrowly.
  • the term light source is understood to mean one or more devices or devices that can / can provide light that can strike the optical attachment according to the invention.
  • Such a light source can include, for example: both primarily luminous elements, such as
  • Light bulbs, LEDs, OLEDs, laser light sources as well as secondary luminous elements such as light conversion means, light deflection elements such as e.g. B. mirrors, (controllable) micromirror arrays, prisms, light beam-shaping elements such as glass fibers, diaphragms, and light imaging elements such as a lens device.
  • light deflection elements such as e.g. B. mirrors, (controllable) micromirror arrays, prisms, light beam-shaping elements such as glass fibers, diaphragms, and light imaging elements such as a lens device.
  • Such a "light source” is seen as a light source on the part of the ancillary optics: it provides the ancillary optics with light which the ancillary optics images.
  • the light emerging from the ancillary optics is designed as a light bundle comprising essentially parallel light beams, i.e. having a small etendue.
  • the at least one light source is designed as an LED.
  • the light module comprises a plurality of light sources, a number of light sources being greater than a number of optical elements or equal to a number of optical elements and at least two, preferably three, in particular more than three, light sources being assigned to each optical element or precisely one light source being assigned .
  • the light sources for example LEDs
  • the light sources can be arranged very close to the light entry surfaces of the optical elements, for example TIR lenses. Essentially all of the light from each individual light source can be fed into the associated optical element. In this way, for example, the light losses (light transmission losses) can be reduced or kept small.
  • the number of light sources is, for example, an integral multiple of the number of optical elements, with each optical element being assigned the same number of light sources, for example, the light sources assigned to an optical element can be activated separately and emit light in different colors. In this way, different light functions such as direction indicators and daytime running lights can be implemented in one (and the same) light module.
  • the light module is designed as a signal light module.
  • Fig. 1 shows an attachment lens 1, which can correspond to an attachment lens according to the invention.
  • the ancillary optics 1 is designed as TIR optics (TIR lenses) 2 which are joined to one another in chains (lined up without gaps) and which can correspond to light-guiding optical elements.
  • TIR lenses 2 are designed to be congruent to one another, have a characteristic size of 10 to 20 mm and can be used, for example, in an injection molding process with a single tool getting produced. TIR lenses, which differ in size and shape, can also be used.
  • other light-conducting optical elements such as, for example, light guide fibers, tubes, rods or the like, is conceivable.
  • Each TIR lens 2 has a light entry area 3, a light exit area 4 opposite the light entry area and a lateral surface 5 connecting the light entry area 3 to the light exit area 4.
  • the light exit area 4 is assigned to a light exit area 6.
  • the in Fig. 1 TIR lenses 2 shown match their light exit areas and light exit areas.
  • the light exit surfaces of all TIR lenses form a total light exit surface 60, which lies in a surface F and is designed as a linearly extended, elongated constrictions 61 having (see also Fig. 2 ).
  • the light exit surfaces 6 and the surface F can be planar or slightly curved. Under slightly curved is to be understood that the surface F has a slight curvature compared to the characteristic size of the TIR lenses.
  • the shape of the light exit area can be adapted, for example, to the shape of the light entry area (see e.g. Jin-Jia Chen, Chin-Tang Lin “Freeform surface design for a lightemitting diode-based collimating lens", Optical Engineering 49 (9), 093001 (September 2010 ) and Donglin Ma, Zexin Feng, and Rongguang Liang "Freeform illumination lens design using composite ray mapping", Applied Optics Vol. 54, no. 3, 20 January 2015 ).
  • the light exit surface 6 is delimited by a circumferential, for example sickle-shaped (as shown), delimitation line 7 and adjoins this delimitation line 7 the light exit region 4.
  • the lateral surfaces 5 of the TIR lenses 2 are parabolic. Outer surfaces of the TIR lenses designed differently are quite conceivable.
  • the lateral surfaces can have facets, wherein each facet can have a parabolic course.
  • one or more recesses 8 can be provided for each lateral surface 5, which preferably corresponds / correspond to the, for example, parabolic, surface course of the lateral surface 5.
  • This recess (s) 8 corresponds / correspond to the areas which are each assigned to an area of the lateral surface of a nearest neighbor 5a, areas assigned to one another being adjacent to one another and being able to have corresponding surface courses.
  • each TIR lens 2 in the chain arrangement shown has two nearest neighbors. Accordingly, each boundary line 7 has two sections 7a, 7b, each of which is assigned to a section of the boundary line 7 of a nearest neighbor. The sections 7a, 7b assigned to one another lie against one another and have curves that correspond to one another.
  • each TIR lens and also each optical element can have any number (0, 1, 2, 3, 4, 5, 6, etc.) of nearest neighbors, each nearest neighbor being a section assigned to the boundary line 7.
  • each nearest neighbor being a section assigned to the boundary line 7.
  • the in Fig. 2 The closest neighbors 2a, 2b shown, the section 7b of the boundary line of the light exit surface of the TIR lens 2a is assigned to the section 7a. It can be provided that the sections 7a, 7b are designed to be congruent to one another, so that they can be placed congruently against one another.
  • the sections 7a, 7b are designed in such a way that the closest neighbors are arranged so as to be pivotable, in particular rotatable, about an axis running essentially perpendicular to the surface F.
  • Fig. 2 shows circular arc-shaped sections 7a, 7b, these having the same radius of curvature, which is essentially the same as the radius R of the light exit region of a TIR lens (without a recess in the lateral surface).
  • the TIR lens 2b is arranged so as to be rotatable about its optical axis OA with respect to the adjacent TIR lens 2a ( Fig. 2 ).
  • Such a rotation can, if desired, for example change the course of the chain between two predetermined points.
  • the TIR lens 2d the optical axis of which runs through the point P2
  • the TIR lens 2e can be rotated counterclockwise about its optical axis by a further angle ⁇ 1.
  • chains can be formed in almost any direction.
  • This allows a Ancillary optics are created that can have almost any shape and, for example, can be adapted to almost any shape of a motor vehicle headlight housing.
  • the distance between the closest neighbors does not exceed the value of two characteristic values of the light exit surface of the optical element.
  • the distance D is in a range between a radius and a diameter of the light exit surface of the TIR lens (if the TIR lens has no recess).
  • Fig. 3 (a) and (b) show two of many TIR lenses according to the prior art, which have different light entry 3 and light exit areas 4. It can be seen from the prior art that the shape of the light entry area is related to the shape of the light exit area. So shows for example Fig. 3 (b) a conventional TIR lens 2 'in which the shape of the light exit area 4' based on the round shape of the light entry area 3 'and the condition that light rays emerging from the TIR lens 2' run parallel to the optical axis of the TIR lens 2 ', is determined.
  • the TIR lens 2 ' represents the Fig. 3 (b) represents an example of a TIR lens in which the light exit surface 6 'and the light exit area 4' do not coincide.
  • Fig. 4 shows an optical attachment 1 'with a branched total light exit surface 60'.
  • the ancillary optics 1 ' has a plurality of TIR lenses 2, with a TIR lens 2 "having three closest neighbors and serving to implement a junction. It should be noted that all TIR lenses of the ancillary optics 1' are of the same design. This is also the case with the auxiliary optics 1 FIGS. 1 and 2 the case.
  • an attachment lens according to the present invention has several branches. Using the TIR lenses 2, it is possible to create ancillary optics of different shapes (for example, self-contained, one or more loops, etc.).
  • Fig. 5 schematically shows an example of a motor vehicle headlight 100 which has at least one light module 101.
  • the light module has a plurality of for example, LEDs 103 arranged on a circuit board 102, which can correspond to the at least one light source.
  • the LEDs can be replaced with other light sources. It is entirely conceivable that instead of LEDs, OLEDs or light conversion means illuminated with laser light are used.
  • the light generated by LEDs is coupled into an optical attachment 1 ′′.
  • the optical attachment 1 ′′ can be used as one of the aforementioned optical attachment 1, 1 ′ Fig. 1 or the Fig. 4 be formed or correspond to another optical adapter corresponding to the optical adapter according to the invention.
  • an S-shaped luminous surface is generated which corresponds to the shape of the overall light exit surface 60 ′′, the overall light exit surface 60 ′′ being formed from the light exit surfaces 6 of the individual optical elements designed as TIR lenses 2. It should be noted that if the LEDs are not switched on at the same time, various lighting scenarios can be implemented that are used, for example, in signal light modules.
  • Fig. 6 (a) to 6 (d) show TIR lenses, the lateral surfaces of which each have two essentially planar regions 10a, 10b that run essentially parallel to the optical axis of the TIR lens OA. Accordingly, the boundary lines 7 of the light exit surfaces of these TIR lenses also have two straight sections 7c, 7d. As already explained above, it is advantageous if the number of sections corresponds to the number of the closest neighbors and if these sections are designed in such a way that they can be assigned to the corresponding sections of the closest neighbors. The sections 7c, 7d can run parallel to one another. In this case, it is possible very quickly to form an attachment lens designed as a straight chain, with which an impression of a luminous strip can be created particularly favorably.
  • the straight sections 7c, 7d can run obliquely to one another and be parts of the corresponding legs of an angle ⁇ 1 , ⁇ 2 ( Fig. 6 (c) and Fig. 6 (d) ).
  • Fig. 7 shows an embodiment of an ancillary optics 1 ', which have a plurality of TIR lenses 2' with the boundary lines, each having two straight sections 7c, 7d, which sections 7c, 7d at an angle ⁇ 1 , ⁇ 2 to each other (as parts of the corresponding Legs of the angle) are arranged.
  • the Fig. 7 shows an embodiment of an ancillary optics 1 ', which have a plurality of TIR lenses 2' with the boundary lines, each having two straight sections 7c, 7d, which sections 7c, 7d at an angle ⁇ 1 , ⁇ 2 to each other (as parts of the corresponding Legs of the angle) are arranged.
  • TIR lenses 2a 'of the same design the outer surfaces of which have flat areas, and whose boundary lines each have two rectilinear, non-parallel sections 7c, 7d, which are at the same angle, for example at the angle ⁇ 1 , stand to each other, an annular, O-shaped, ancillary optics are particularly favorable can be.
  • TIR lenses 2a ', 2b' can be used to form an optical attachment. This means that it is entirely conceivable that straight, oblique sections of each TIR lens in the ancillary optics are at a predetermined angle ⁇ 1 , ⁇ 2 to one another and this angle varies from TIR lens to TIR lens.
  • Fig. 8 shows two adjacent TIR lenses 2c, 2d, wherein a TIR lens 2c comprises a plurality of upholstery optics 11 having recess 8 on the lateral surface.
  • the TIR lens 2c is assigned an LED 103 'which can correspond to the at least one light source.
  • the upholstery optics 11 can be set up, for example, to direct the light emerging from the ancillary optics in parallel and to avoid scattered light / false light 12. It is particularly advantageous if the upholstery optics 11 are arranged in a region of the recess 8 which, viewed in a direction parallel to the optical axis of the TIR lens, is not covered by the lateral surface of the adjacent TIR lens.
  • the light beams 13 directed parallel to the optical axis by the upholstery optics 11 can exit the ancillary optics without experiencing refraction and / or reflection on a further surface.
  • the TIR lenses 2c and 2d are spaced apart from one another, as a result of which the wear on the TIR lenses is reduced.
  • the optical elements for example TIR lenses
  • the distance is kept small in comparison to the characteristic variable, for example to the diameter of the light exit surface, of the optical elements.
  • the individual optical elements of the optical attachment are not recognized as such, the optical attachment is perceived as a whole and a homogeneous light impression is created, for example a branched luminous surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (12)

  1. Optique de fixation (1) pour une source de lumière pour générer une surface lumineuse ramifiée, laquelle optique de fixation (1) comprend au moins une pluralité d'éléments optiques conducteurs de lumière (2), chaque élément optique conducteur de lumière (2) comprenant
    *une zone d'entrée de lumière (3),
    *une région de sortie de la lumière (4) et
    *une surface d'enveloppe (5), dans laquelle
    la surface d'enveloppe (5) relie la région d'entrée de lumière (3) et la région de sortie de lumière (4) et la région de sortie de la lumière (4),
    la région de sortie de lumière (4) est située à l'opposé de la région d'entrée de lumière (3) et est associée à une surface de sortie de lumière (6), laquelle surface de sortie de lumière (6) est délimitée par une ligne de délimitation circonférentielle (7), la ligne de délimitation (7) étant adjacente à la région de sortie de lumière (4), et
    les éléments optiques (2) sont alignés de telle sorte que les surfaces de sortie de lumière (6) de tous les éléments optiques (2) se trouvent dans une zone commune sensiblement plane (F), chaque élément optique (2) ayant un certain nombre de voisins les plus proches et sa ligne de délimitation (7) ayant un certain nombre de parties (7a, 7b) qui sont chacun associés à une partie de la ligne de délimitation d'un voisin le plus proche, dans lequel les parties mutuellement associées (7a, 7b) sont adjacentes l'une à l'autre et ont des courbes mutuellement correspondantes, dans lequel les éléments optiques agencés dans une rangée forment une chaîne, dans lequel chaque élément optique (2d, 2a') par rapport à ses éléments optiques adjacents (2c, 2e ;
    2a', 2b') est à des angles prédéterminés (a1, a2 ; β1, β2), caractérisé en ce que la surface d'enveloppe (5) présente un certain nombre de régions (8) qui sont chacune attribuées à une région de la surface d'enveloppe (5a) d'un voisin le plus proche, les régions attribuées les unes aux autres étant adjacentes les unes aux autres et ayant des profils de surface correspondant les uns aux autres, étant prévu que
    - un ou plusieurs évidements (8) sont prévus sur chaque surface d'enveloppe (5), et au moins une section (7a, 7b) est formée en forme d'arc et est ainsi courbée vers l'intérieur en direction de la surface émettrice de lumière, tous les éléments optiques étant formés de manière sensiblement identique, une couche adhésive étant de préférence prévue entre les éléments optiques (2) disposés en une rangée, laquelle couche adhésive relie chaque élément optique à ses voisins les plus proches.
  2. Optique de fixation selon la revendication 1, caractérisée en ce que les sections adjacentes mutuellement associées (7a, 7b) sont formées de manière congruente les unes avec les autres.
  3. Optique de fixation selon la revendication 1 ou 2, caractérisée en ce que les sections mutuellement associées sont formées de manière congruente les unes avec les autres.
  4. Optique de fixation selon l'une des revendications 1 à 3, caractérisé en ce que tous les éléments optiques sont formés de manière congruente les uns avec les autres.
  5. Optique de fixation selon l'une quelconque des revendications 1 à 4, caractérisée en ce que la chaîne est ramifiée et/ou comporte au moins une boucle ou est fermée en forme d'anneau, notamment en forme de 0.
  6. Optique de fixation selon l'une quelconque des revendications 1 à 5, caractérisée en ce que la les éléments optiques sont formés comme des lentilles TIR, de préférence comme des lentilles TIR à symétrie de rotation.
  7. Optique de fixation selon l'une quelconque des revendications 1 à 6, caractérisée en ce que les surfaces de revêtement présentent une pluralité d'optiques de coussin (11), de préférence au moins une partie des optiques de coussin (11) étant disposée sur un côté respectif des surfaces de revêtement (8) tourné vers un voisin le plus proche et, par exemple, touchant la surface de revêtement du voisin le plus proche.
  8. Optique de fixation selon l'une quelconque des revendications 1 à 7, caractérisée en ce que la les éléments optiques (2) sont disposés en contact les uns avec les autres.
  9. Module lumineux pour projecteur de véhicule automobile comprenant au moins une source lumineuse, par exemple une source lumineuse à LED, et un accessoire optique associé à la au moins une source lumineuse selon l'une quelconque des revendications 1 à 8.
  10. Module de lumière selon la revendication 9, caractérisé en ce que sensiblement toute la lumière générée par la au moins une source de lumière entre dans l'optique de fixation par les régions d'entrée de lumière et sort de l'optique de fixation, de préférence sensiblement sans pertes, par les régions de sortie de lumière, dans lequel la lumière sortant de l'optique de fixation est de préférence formée comme un faisceau lumineux comprenant des rayons lumineux dirigés sensiblement parallèlement les uns aux autres.
  11. Module de lumière selon la revendication 9 ou 10, caractérisé en ce que le module de lumière comprend une pluralité de sources de lumière, par exemple des sources de lumière LED, un nombre de sources de lumière étant supérieur à un nombre d'éléments optiques ou égal à un nombre d'éléments optiques et au moins deux, de préférence trois, en particulier plus de trois, sources de lumière étant associées à chaque élément optique ou exactement une source de lumière étant associée, et le module de lumière étant de préférence conçu comme un module de lumière de signalisation.
  12. Projecteur de véhicule automobile comportant au moins une optique de fixation selon l'une quelconque des revendications 1 à 8 et/ou comportant au moins un module lumineux selon l'une quelconque des revendications 9 à 11.
EP17166533.4A 2016-04-18 2017-04-13 Optique auxiliaire pour une source lumineuse destinée à produire une surface d'éclairage bifurqué Active EP3239594B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA50345/2016A AT518558B1 (de) 2016-04-18 2016-04-18 Vorsatzoptik für eine Lichtquelle zum Erzeugen einer verzweigten Leuchtfläche sowie Lichtmodul für einen Kraftfahrzeugscheinwerfer

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EP3239594A1 EP3239594A1 (fr) 2017-11-01
EP3239594B1 true EP3239594B1 (fr) 2021-06-02

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WO2023234146A1 (fr) * 2022-06-03 2023-12-07 株式会社小糸製作所 Lentille

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Publication number Priority date Publication date Assignee Title
US6527411B1 (en) * 2000-08-01 2003-03-04 Visteon Corporation Collimating lamp
DE102004026530B3 (de) * 2004-05-29 2006-02-02 Fer Fahrzeugelektrik Gmbh Optikkörper
US10132463B2 (en) * 2008-08-18 2018-11-20 The Hong Kong Polytechnic University LED automotive tail lamp set
FR2995977B1 (fr) * 2012-09-26 2019-06-28 Valeo Vision Guide de lumiere pour un dispositif d'eclairage et/ou de signalisation de vehicule automobile
CN103672664B (zh) * 2012-09-26 2017-03-01 中强光电股份有限公司 车用照明装置
DE102013200442B3 (de) * 2013-01-15 2014-02-13 Automotive Lighting Reutlingen Gmbh Lichtmodul für einen Kraftfahrzeugscheinwerfer, der zur Erzeugung streifenförmiger Lichtverteilungen eingerichtet ist
DE202014000665U1 (de) * 2014-01-23 2014-02-10 Jokon Gmbh LED-Leuchte mit einer Totalreflexions-Optik und verschachtelten Lichtumlenkflächen zur Herstellung von beliebigen Lichtaustrittsflächen
JP6340719B2 (ja) * 2014-05-09 2018-06-13 パナソニックＩｐマネジメント株式会社 照明装置及び照明装置を備える自動車

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CN107906467B (zh) 2021-03-16
AT518558A1 (de) 2017-11-15
EP3239594A1 (fr) 2017-11-01
AT518558B1 (de) 2018-03-15
CN107906467A (zh) 2018-04-13

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