EP0658243B1 - Signalleuchte - Google Patents

Signalleuchte Download PDF

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Publication number
EP0658243B1
EP0658243B1 EP93919104A EP93919104A EP0658243B1 EP 0658243 B1 EP0658243 B1 EP 0658243B1 EP 93919104 A EP93919104 A EP 93919104A EP 93919104 A EP93919104 A EP 93919104A EP 0658243 B1 EP0658243 B1 EP 0658243B1
Authority
EP
European Patent Office
Prior art keywords
light
segments
signal lamp
lens system
light filter
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.)
Expired - Lifetime
Application number
EP93919104A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0658243A1 (de
Inventor
Rolf Feger
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.)
ITT Automotive Europe GmbH
Continental Teves AG and Co oHG
Original Assignee
ITT Automotive Europe GmbH
Alfred Teves GmbH
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 ITT Automotive Europe GmbH, Alfred Teves GmbH filed Critical ITT Automotive Europe GmbH
Publication of EP0658243A1 publication Critical patent/EP0658243A1/de
Application granted granted Critical
Publication of EP0658243B1 publication Critical patent/EP0658243B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F21S43/255—Filters

Definitions

  • the invention relates to a signal lamp, in particular for motor vehicles, with a light source, with a housing, with a cover plate which has a transparent color, preferably red, and with one or more light filters arranged between the light sources and the cover plate.
  • Such a signal lamp is known from DE 33 26 199 Al.
  • This signal light which is used on motor vehicles, has a pink lens and in its interior another colored filter, whereby a red, yellow or white signal light can be generated by selecting a specific color for this filter.
  • a red, yellow or white signal light can be generated by selecting a specific color for this filter.
  • the cover plate appears in a strong red despite the intrinsic color pink when the light source of the signal lamp is switched off, which is not or only slightly influenced by the color of the inner filter, there are red colored stripes in the lamp between the inner filter and the cover plate available.
  • the various proposed arrangements of the strips all have certain disadvantages. Either only a small amount of the amount of light emitted by the light source or not the entire surface of the lens can be used for signal output. Also, some arrangements are not very suitable for keeping the influence of the inner filter on the color of the lens small when switched off. Finally, even with great technical efforts, an influence of the red-colored stripes on the color of the signal light cannot be completely avoided
  • a vehicle lamp which has a colored, translucent cover pane with alternately arranged areas of different pane thicknesses.
  • an optical disc with a plurality of converging lenses which are arranged in such a way that the light coming from the light source is in principle passed exclusively through the areas of the cover plate with a small pane thickness.
  • the cover plate has no color filter function, so the color of the emitted light signal is determined solely by the color filter effect of the optical plate.
  • the thicker areas of the cover plate are intended to reflect the known extraneous light effect, i.e. to avoid the appearance of a signal lamp in operation in the event of extraneous light. It is disadvantageous that when the light source is switched off, the sections of greater thickness of the cover pane appear substantially darker than the sections of smaller pane thickness.
  • EP 0 211 742 A1 discloses a signal lamp in which color-impermeable webs have been dispensed with.
  • the end lens is provided in strips with a color filter which conveys a certain color to the light rays passing through this area.
  • the areas of the cover plate, which are equipped without a filter, are preceded by a filter in an upstream plane, so that the light rays crossing this area also have a color.
  • all of the light passed through the lens has a homogeneous color.
  • This signal light is considered to be disadvantageous in that the lens has alternately colored and clear stripes and therefore does not give an aesthetically pleasing impression.
  • the large number of successive switched color filter reduces the light output, especially when generating white light, whereby the red of the colored lens must be filtered out by subtractive color mixing.
  • Another disadvantage is seen in the fact that the lens can only be designed in a very bright red or pink, since the light losses would be relatively high with a more intense red.
  • the invention is therefore based on the object of providing a signal lamp which, when switched off, gives an intense red color impression and has low light losses.
  • the lens has a continuous color, that the lens is broken down into segments of different thickness and that the light filter is provided with a recess.
  • the coloring of the lens Due to the continuous coloring of the lens, it appears in a uniform, for example red, color.
  • the coloring can be an intense red.
  • the advantage is achieved that the light emitted by the light source in the areas where the segments with large lens thickness are provided passes through the recesses of the light filter and therefore is not additionally weakened by the light filter.
  • the sections of the light filter which are stored between the cutouts and where the light is colored.
  • the coloring of the light weakens its intensity, the light only has to cover the segments of the lens traverse that have a small slice thickness. Because of this configuration, the signal light has an intense red color in the switched-off state and a high light intensity in the switched-on state, since only the light component that has to pass through the segments with a small pane thickness has to pass through an additional light filter.
  • the segments of different slice thickness have different widths, the segments with a smaller slice thickness in particular being narrower than the segments with a larger slice thickness. This gives the signal lamp an essentially uniform appearance, since the segments with a smaller pane thickness, which appear slightly lighter, have a very small width and therefore have almost no effect on the overall impression.
  • At least one lens system is preferably arranged between the light filter and the lens. This lens system has the task of diffusing at least part of the light passing through the lens, so that the light mixes additively after it has passed through the lens.
  • the lens system is formed by lenses arranged on the segments with a large pane thickness, the lenses and the segments being formed in particular in one piece. This configuration has the advantage that a separate component having the lens system can be saved, since the lens system is provided directly on the back or inner surface of the cover lens.
  • a lens system is arranged between the light source and the light filter. Part of the light emitted by the light source is bundled via this lens system and in particular transmitted through the light filter and through the segments of the cover lens arranged behind it with a small lens thickness. By bundling the light, this bundle of light is directed specifically through the relevant segment of the cover lens.
  • the lens system is advantageously formed by lenses arranged on the light filter, the lenses and the light filter being formed in particular in one piece. This also eliminates the need for a separate component which has the lens system.
  • the lenses of the two lens systems can have any desired shape, i.e. be either concave and / or convex.
  • the back and / or the front of the light filter and / or the lens can be designed as a lens system.
  • the lens system has cutouts in the area of the cutouts of the light filter.
  • lenses are therefore only provided where a light filter is provided for the light emitted by the light source, so that only this light, which passes through the light filter, is deflected.
  • the lenses of the two lens systems can either be designed as cylindrical lobes, as rotationally symmetrical lenses or with a corresponding shape.
  • the light from the light source is preferably refracted either by the lens system assigned to the light filter or by the lens system assigned to the cover plate. This has the advantage that part of the light is not deflected by both lens systems, but each lens system deflects a special area or portion of the light emitted by the light source in accordance with the design of the respective lens system.
  • the focal points of the lens system assigned to the light filter lie in the region of the segments with a smaller pane thickness, in particular on the inside or outside surface of the cover pane.
  • the focal points of the lens system assigned to the lens are enlarged at a distance from the outer surface, the difference in thickness within the segments with greater lens thickness is reduced, as a result of which the color intensity of the entire lens is evened out.
  • the distance of the light filter from the inner surface of the cover lens is preferably different for different signal colors. In this way, the proportion of light that passes through the segments with a larger pane thickness or the segments with a smaller pane thickness can be controlled in a targeted manner.
  • the desired signal color can advantageously be generated by color subtraction with subsequent color addition.
  • the color subtraction creates the color parts that later result in the desired signal color due to the color addition.
  • the color intensity is increased by the color addition.
  • the light beams 1 to 4 coming from a light source which are aligned in a parallel direction by suitable optical means, first strike a light filter 5 and then a cover disk 6 and leave it outside.
  • the design of the other elements of the signal light are not shown and correspond to the usual design.
  • the light emerging from the signal lamp has a signal color which is usually either white, yellow or orange, or red.
  • the light filter 5 has cutouts 7 in which the light does not undergo a color change.
  • the areas 8 lying between the cutouts 7 impart a different color to the light passing through these areas 8 by filtering out a specific wave range.
  • these areas 8 provided with a convex surface 9 through which lenses 10 are formed.
  • these lenses 10 produce a lens system 11, which is assigned to the light filter 5. Accordingly, the light bundles crossing the regions 8 are deflected such that they converge on the focal point 12 of the lenses 10. The light bundles crossing the recesses 7 are not deflected and therefore maintain their direction.
  • the cover disk 6 is divided into segments 13 and 14, the segments 13 having a smaller thickness d than the segments 14.
  • the segments 13 and 14 are arranged alternately.
  • the segments 14 are configured on their side facing the light source with a convex surface 15, through which the lenses 16 of a lens system 17 are formed.
  • the segments 14 have slanted side walls 18, the angle of inclination of the side wall 18 essentially corresponding to the angle of inclination of the boundary beam 19 of the light beam passing through the segment 13. It can also be seen that not only the thickness d of the segment 13 is less than the thickness D of the segment 14, but also the width b of the segment 13 is smaller with respect to the width B of the segment 14.
  • an area 8 of the light filter 5 lies at the level of a segment 13, so that the light bundle passing this area 8 only passes through the segment 13 with a small thickness d.
  • the light beam passing through the recess 7 then only crosses the segment 14 arranged behind it and is deflected therein.
  • the segments 13 have a small thickness d compared to the segments 14, the reduction in the light intensity is relatively small.
  • the cover plate 6 still has a uniform appearance with regard to the color, but due to the intensive coloring of the cover plate 6, an intensely red color impression prevails.
  • the distance A between the light filter 5 and the cover plate 6 is significantly smaller than in the exemplary embodiment in FIG. 1, so that the regions 8 having the color filter 5 also have a smaller width.
  • the recesses 7 are therefore larger. This has the advantage that the light bundles passing through the recesses 7 are larger and accordingly more light is guided through the segments 14.
  • the light emerging from the segments 14 has an intensely red color. Accordingly, the light filter 5 must be designed so that the light beams formed by the boundary beams 2 and 3, which pass through the areas 8 and pass through the segments 13, also have the intense red color. This is going on easily achieved in that the light filter 5 is a red filter.
  • the light filter 5 is a yellow filter, then a yellow color can be imparted to the light bundle delimited by the boundary beams 2 and 3, so that an orange color is produced by adding this light bundle with the light bundle which passes through the segment 14.
  • the addition of these two colors is complete from level E and the mixture is homogeneous.
  • One or more further optical disks for optimizing the homogeneous color impression can be arranged between the color filter 5 and the lens 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP93919104A 1992-08-31 1993-08-19 Signalleuchte Expired - Lifetime EP0658243B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4228928 1992-08-31
DE4228928A DE4228928C1 (de) 1992-08-31 1992-08-31 Signalleuchte
PCT/EP1993/002220 WO1994005949A1 (de) 1992-08-31 1993-08-19 Signalleuchte

Publications (2)

Publication Number Publication Date
EP0658243A1 EP0658243A1 (de) 1995-06-21
EP0658243B1 true EP0658243B1 (de) 1997-11-19

Family

ID=6466825

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93919104A Expired - Lifetime EP0658243B1 (de) 1992-08-31 1993-08-19 Signalleuchte

Country Status (7)

Country Link
US (1) US5555492A (pt)
EP (1) EP0658243B1 (pt)
JP (1) JPH08500463A (pt)
BR (1) BR9306948A (pt)
DE (2) DE4228928C1 (pt)
ES (1) ES2109510T3 (pt)
WO (1) WO1994005949A1 (pt)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1268076B1 (it) * 1994-06-22 1997-02-20 Carello Spa Fanale per veicoli.
DE4425401A1 (de) * 1994-07-19 1996-02-01 Teves Gmbh Alfred Lichtabgabeoptik für Fahrzeugleuchten
EP0828112B1 (fr) * 1996-09-05 2003-05-14 Valeo Vision Feu de signalisation à synthèse additive
FR2752914B1 (fr) * 1996-09-05 1998-11-20 Valeo Vision Feu de signalisation a synthese additive
US5798849A (en) * 1996-11-05 1998-08-25 Mustek Systems Inc. Multilevel light source device
FR2763385B1 (fr) * 1997-05-15 1999-08-06 Valeo Vision Feu de signalisation pour vehicule automobile a synthese additive
FR2763384B1 (fr) * 1997-05-15 1999-08-06 Valeo Vision Feu de signalisation pour vehicule automobile a synthese soustracto-additive
DE19753762A1 (de) * 1997-12-04 1999-06-10 Itt Mfg Enterprises Inc Signalleuchte, insbesondere Kombinationsheckleuchte eines Fahrzeuges
DE19812656A1 (de) * 1998-03-23 1999-09-30 Volkswagen Ag Farbleuchte
DE10124539B4 (de) * 2001-05-19 2009-07-23 Odelo Gmbh Heckleuchte für Fahrzeuge, insbesondere für Kraftfahrzeuge
WO2007079423A2 (en) * 2005-12-30 2007-07-12 Dialight Corporation Method and apparatus for providing a light source that combines different color leds
US7918582B2 (en) * 2005-12-30 2011-04-05 Dialight Corporation Signal light using phosphor coated LEDs
CN101435549B (zh) * 2007-11-13 2010-12-01 建兴电子科技股份有限公司 可调整照光形状及照光面积的照明系统
US10901125B2 (en) 2014-05-23 2021-01-26 Eyesafe, Llc Light emission reducing compounds for electronic devices
US10642087B2 (en) 2014-05-23 2020-05-05 Eyesafe, Llc Light emission reducing compounds for electronic devices
USD749588S1 (en) * 2014-08-22 2016-02-16 Nilesh Narendra Jambhulkar Docking station with screen
US11126033B2 (en) 2018-11-28 2021-09-21 Eyesafe Inc. Backlight unit with emission modification
US11592701B2 (en) 2018-11-28 2023-02-28 Eyesafe Inc. Backlight unit with emission modification
US11810532B2 (en) 2018-11-28 2023-11-07 Eyesafe Inc. Systems for monitoring and regulating harmful blue light exposure from digital devices
US11347099B2 (en) 2018-11-28 2022-05-31 Eyesafe Inc. Light management filter and related software
US10971660B2 (en) 2019-08-09 2021-04-06 Eyesafe Inc. White LED light source and method of making same
EP4103879A4 (en) 2020-02-10 2023-08-23 Flex-N-gate Advanced Product Development, LLC FUNCTIONAL LIGHTING SYSTEM THROUGH AN OPAQUE FINISH

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0074727A1 (en) * 1981-08-29 1983-03-23 Britax Vega Limited Vehicle lamp assembly
FR2530781A1 (fr) * 1982-07-23 1984-01-27 Cibie Projecteurs Feux notamment destines aux vehicules automobiles
GB8327529D0 (en) * 1983-10-14 1983-11-16 Lucas Ind Plc Indiscernible lamp
FR2572495B1 (fr) * 1984-10-26 1986-12-26 Signal Vision Sa Dispositif d'eclairage et de signalisation notamment pour vehicules automobiles
FR2585448B1 (fr) * 1985-07-24 1989-06-02 Cibie Projecteurs Feux, multifonction de teinte ou d'aspect uniforme a l'etat eteint, notamment destines aux vehicules automobiles
DE3636383A1 (de) * 1986-10-25 1988-04-28 Swf Auto Electric Gmbh Signalleuchte, insbesondere fuer kraftfahrzeuge
EP0281719A1 (en) * 1987-03-11 1988-09-14 Senalizacion Y Accesorios Del Automovil Yorka, S.A. Improvements in luminous focuses for automobiles

Also Published As

Publication number Publication date
WO1994005949A1 (de) 1994-03-17
US5555492A (en) 1996-09-10
BR9306948A (pt) 1999-04-06
EP0658243A1 (de) 1995-06-21
DE4228928C1 (de) 1993-12-16
ES2109510T3 (es) 1998-01-16
DE59307715D1 (de) 1998-01-02
JPH08500463A (ja) 1996-01-16

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