EP0658243A1 - Signalleuchte - Google Patents
SignalleuchteInfo
- Publication number
- EP0658243A1 EP0658243A1 EP93919104A EP93919104A EP0658243A1 EP 0658243 A1 EP0658243 A1 EP 0658243A1 EP 93919104 A EP93919104 A EP 93919104A EP 93919104 A EP93919104 A EP 93919104A EP 0658243 A1 EP0658243 A1 EP 0658243A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- segments
- lens
- lens system
- 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.)
- Granted
Links
- 239000003086 colorant Substances 0.000 claims description 3
- 238000004040 coloring Methods 0.000 abstract description 7
- 230000003287 optical effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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 3326199 AI.
- 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.
- the light output is reduced by the large number of color filters connected in series, especially when generating white light, the red of the colored lens having to be filtered out by subtractive color mixing.
- Another night 1 is seen in 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 divided into segments of different thickness and that the light filter is provided with a recess.
- 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 intensity of the light is weakened by the coloring, the light only has to cross the segments of the cover lens which are only slightly Have slice thickness. Because of this configuration, the signal lamp has an intense red color when switched off and a high light intensity when switched on, 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 pane thickness have different widths, the segments with a smaller pane thickness in particular being narrower than the segments with a larger pane 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 becomes Beams of light directed through the relevant segment of the 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 rather each lens system deflects a specific 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 a larger 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.
- Figure 1 shows a first embodiment of the signal light according to the invention, e.g. for a white signal light
- Figure 2 shows another embodiment of the signal light according to the invention, e.g. for a red signal light.
- the light beams 1 to 4 coming from a light source, not shown, hit the are aligned in the parallel direction by suitable optical means, first on a light filter 5 and then on a cover plate 6 and leave it outside.
- suitable optical means first on a light filter 5 and then on a cover plate 6 and leave it outside.
- the design of the other elements of the signal lamp 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 convey a different color to the light passing through these areas 8 by filtering out a certain wave range. Furthermore, these areas 8 are provided with a convex surface 9, through which lenses 10 are formed. Overall, 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 one segment 13, so that this area 8 passing light bundles only the segment 13 with a small thickness d passes.
- the light beam passing through the recess 7 then only crosses the segment 14 arranged behind it and is deflected therein.
- the light filter 5 is designed so that after passing through the areas 8 and the segments 13 the light is imparted a color which, by adding the color of the light bundle leaving the segments 14, produces a color neutral, ie receives a white color, the light with the white color is thus obtained by adding the color of the light beams of the segments 14 and the color of the light beams of the segments 13.
- 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 such 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 achieved in a simple manner 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)
Abstract
Description
Claims
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 true EP0658243A1 (de) | 1995-06-21 |
EP0658243B1 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 (de) |
EP (1) | EP0658243B1 (de) |
JP (1) | JPH08500463A (de) |
BR (1) | BR9306948A (de) |
DE (2) | DE4228928C1 (de) |
ES (1) | ES2109510T3 (de) |
WO (1) | WO1994005949A1 (de) |
Families Citing this family (22)
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 (de) * | 1996-09-05 | 2003-05-14 | Valeo Vision | Signalleuchte mit additiver Farbmischung |
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 |
US7918582B2 (en) * | 2005-12-30 | 2011-04-05 | Dialight Corporation | Signal light using phosphor coated LEDs |
WO2007079423A2 (en) * | 2005-12-30 | 2007-07-12 | Dialight Corporation | Method and apparatus for providing a light source that combines different color 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 |
US10642087B2 (en) | 2014-05-23 | 2020-05-05 | Eyesafe, Llc | Light emission reducing compounds for electronic devices |
US10901125B2 (en) | 2014-05-23 | 2021-01-26 | Eyesafe, Llc | Light emission reducing compounds for electronic devices |
USD749588S1 (en) * | 2014-08-22 | 2016-02-16 | Nilesh Narendra Jambhulkar | Docking station with screen |
US11810532B2 (en) | 2018-11-28 | 2023-11-07 | Eyesafe Inc. | Systems for monitoring and regulating harmful blue light exposure from digital devices |
US11592701B2 (en) | 2018-11-28 | 2023-02-28 | Eyesafe Inc. | Backlight unit with emission modification |
US11126033B2 (en) | 2018-11-28 | 2021-09-21 | Eyesafe Inc. | Backlight unit with emission modification |
US10955697B2 (en) | 2018-11-28 | 2021-03-23 | Eyesafe Inc. | Light emission modification |
US10971660B2 (en) | 2019-08-09 | 2021-04-06 | Eyesafe Inc. | White LED light source and method of making same |
WO2021161098A1 (en) | 2020-02-10 | 2021-08-19 | Flex-N-Gate Advanced Product Development, Llc | System providing functional lighting through an opaque finish |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0074727A1 (de) * | 1981-08-29 | 1983-03-23 | Britax Vega Limited | Fahrzeugleuchte |
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 |
ES2006427A4 (es) * | 1987-03-11 | 1989-05-01 | Senalizacion Y Acces Del Automovil Yorka S A | Mejora en focos luminosos para automoviles |
-
1992
- 1992-08-31 DE DE4228928A patent/DE4228928C1/de not_active Expired - Fee Related
-
1993
- 1993-08-19 US US08/392,834 patent/US5555492A/en not_active Expired - Lifetime
- 1993-08-19 EP EP93919104A patent/EP0658243B1/de not_active Expired - Lifetime
- 1993-08-19 BR BR9306948A patent/BR9306948A/pt not_active IP Right Cessation
- 1993-08-19 DE DE59307715T patent/DE59307715D1/de not_active Expired - Lifetime
- 1993-08-19 ES ES93919104T patent/ES2109510T3/es not_active Expired - Lifetime
- 1993-08-19 WO PCT/EP1993/002220 patent/WO1994005949A1/de active IP Right Grant
- 1993-08-19 JP JP6505625A patent/JPH08500463A/ja active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO9405949A1 * |
Also Published As
Publication number | Publication date |
---|---|
US5555492A (en) | 1996-09-10 |
DE59307715D1 (de) | 1998-01-02 |
EP0658243B1 (de) | 1997-11-19 |
WO1994005949A1 (de) | 1994-03-17 |
BR9306948A (pt) | 1999-04-06 |
ES2109510T3 (es) | 1998-01-16 |
JPH08500463A (ja) | 1996-01-16 |
DE4228928C1 (de) | 1993-12-16 |
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