SE448652B - Semi-light headlamps for motor vehicles - Google Patents
Semi-light headlamps for motor vehiclesInfo
- Publication number
- SE448652B SE448652B SE8405490A SE8405490A SE448652B SE 448652 B SE448652 B SE 448652B SE 8405490 A SE8405490 A SE 8405490A SE 8405490 A SE8405490 A SE 8405490A SE 448652 B SE448652 B SE 448652B
- Authority
- SE
- Sweden
- Prior art keywords
- aperture
- reflector
- light
- optically active
- active edge
- Prior art date
Links
- 238000003384 imaging method Methods 0.000 claims description 3
- 238000000149 argon plasma sintering Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims description 2
- 239000005401 pressed glass Substances 0.000 claims description 2
- 238000007788 roughening Methods 0.000 claims description 2
- 230000001154 acute effect Effects 0.000 claims 1
- 238000000137 annealing Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 230000007704 transition Effects 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
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
- F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
-
- 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
- F21S41/323—Optical layout thereof the reflector having two perpendicular cross sections having regular geometrical curves of a distinct nature
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
448 652 Enligt krav 6 och i vidareutveckling enligt kraven 7 och 8 bildas en horisontell ljusslits, vars höjd ger erforderlig ljusfördelning. 448 652 According to claim 6 and in further development according to claims 7 and 8 are formed a horizontal light slot, the height of which provides the required light distribution.
Läget hos den övre bländaren väljes härvid så; att inom tillhöran- de område av ljusknippet uppstår kraftig oskärpa, som ger kontinu- erlig ljusövergång. Om enligt krav 9 objektivets yta exempelvis ej poleras, blir transmissionen av ljusstrålarna ej längre likriktad, varför spridningsområdet utbreder sig på önskat sätt.The position of the upper aperture is then selected as follows; that within the In the area of the light beam, sharp blur occurs, which gives continuous honest light transition. If according to claim 9 the surface of the lens, for example, does not polished, the transmission of the light rays is no longer uniform, why the spreading area propagates in the desired manner.
Ett utföringsexempel av uppfinningen beskrivs nedan närmare under hänvisning till åtföljande ritning. Den enda figuren visar en strål- kastare för halvljus till motorfordon i perspektiv och isärdragen längs reflektoraxeln.An embodiment of the invention is described in more detail below reference to the accompanying drawing. The single figure shows a beam headlights for dipped beam for motor vehicles in perspective and separated along the reflector axis.
Beskrivning av utföringsexemplet En halvljusstrålkastare för motorfordon har en reflektor 10 med en reflektoraxel 11, en på denna anordnad glödkropp 12, en bländare 53 med en optiskt verksam kant 54, som bildar ljus/mörkergränsen hos det obehandlade råljusknippe, som bildas av de av glödkroppen 12 alstrade och av reflektorn 10 reflekterade ljusstrålarna. Fram- för bländaren 53 och huvudsakligen parallellt med denna är anord- nat ett som bikonvex lins utformat objektiv 15.Description of the working example A low beam headlight for motor vehicles has a reflector 10 with one reflector shaft 11, an annealing body 12 arranged thereon, an aperture 53 with an optically active edge 54, which forms the light / dark boundary in the untreated beam of raw light, which is formed by those of the ember body 12 generated and reflected by the reflector 10 the light rays. Forward for the aperture 53 and substantially parallel thereto are arranged a lens designed as a biconvex lens 15.
Det vertikala meridiansnittet 21 utgör del av en vertikalellips 22 med sin inre brännpunkt 23 i glödkroppen 12 och med sin yttre brännpunkt 24 omedelbart i närheten av ljusöppningens 36 plan.The vertical meridian section 21 forms part of a vertical ellipse 22 with its internal focal point 23 in the glow plug 12 and with its outer focal point 24 immediately near the plane of the light aperture 36.
Det horisontella meridiansnittet 31 utgör del av en horisontalel- lips 32 med sin inre brännpunkt 33 i närheten av glödkroppen 12, företrädesvis mellan glödkroppen 12 och reflektortoppen 25/35. Vi- dare är horisontalellipsens>32 brännvidd mindre än vertikalellip- sens 22 brännvidd.The horizontal meridian section 31 forms part of a horizontal lips 32 with its internal focal point 33 in the vicinity of the glow plug 12, preferably between the glow plug 12 and the reflector top 25/35. We- the focal length of the horizontal ellipse> 32 is less than the vertical ellipse sens 22 focal length.
Brännpunktsavståndet, dvs avståndet mellan de båda tillhörande brännpunkterna hos horisontalellipsen 32, är större än brännpunkts- avståndet hos vertikalellipsen 22, närmare bestämt ungefär i för- hållandet 2:1.The focal length, ie the distance between the two associated the focal points of the horizontal ellipse 32, are greater than the focal point the distance of the vertical ellipse 22, more precisely approximately in holding 2: 1.
Bländaren 53 och dess optiskt verksamma kant 54 är krökt i för- hållande till yz-planet så, att krökningstoppen ligger inom områ- det för reflektoraxeln 11 och är riktad mot reflektorn 10. Kantens 54 krökning har formen av en parabel med en toppkrökningscirkel, 448 652 vars radie uppgår till 0,4 till 0,7 gånger objektivets 15 bränn- vidd. Bländaren 53 och särskilt dess optiskt verksamma kant 54 har ett kring xz-planet symmetriskt mittområde 55 - företrädes- vis vardera tre grader på sidorna av detta plan - med hög avbild- ningsskärpa. Till detta mittområde ansluter sig ett höger och ett vänster sidoområde 56, 57 med lägre avbildningsskärpa. De båda sidoområdena uppvisar antingen en förstoring av parabelns bränn- vidd, vilken endast Visas vid 56 på ena sidan av ritningen, eller utgör de till mittpartiet 55 anslutande tangenter, vilka betecknas med 57 på andra halvan av ritningen. Den optiska verkan av blända- rens 53 kant 54 åstadkommes antingen genom förändring av det op- timala avbildningsavståndet mellan bländaren 53 och objektivet 15 eller genom uppruggning av kanten 54.The aperture 53 and its optically active edge 54 are curved in front to the yz plane so that the peak of curvature is within range it for the reflector shaft 11 and is directed towards the reflector 10. The edge 54 curvature has the shape of a parabola with a peak curvature circle, 448 652 whose radius is 0.4 to 0.7 times the focal length of the lens 15 width. The aperture 53 and in particular its optically active edge 54 has a center region 55 symmetrical about the xz plane - preferably each three degrees on the sides of this plane - with high image sharpness. To this central area joins one right and one left side area 56, 57 with lower image sharpness. Both the side areas show either an enlargement of the parabola's combustion width, which only appears at 56 on one side of the drawing, or constitute the keys connecting to the middle portion 55, which are designated with 57 in the second half of the drawing. The optical effect of aperture edge 54 edge 54 is achieved either by changing the the temporal imaging distance between the aperture 53 and the lens 15 or by roughening the edge 54.
Ovanför bländarens 53 kant 54 är en övre bländare 58 anordnad, vilken i förhållande till kanten 54 är förskjuten i x-axelns 11 riktning och ej är krökt i förhållande till yz-planet. Den övre bländarens 58 optiskt verksamma kant 59 är välvd i förhållande till xy-planet. Bländaren 58 minskar halvljusknippet i motorfordonets närområde.Above the edge 54 of the aperture 53 is arranged an upper aperture 58, which is offset relative to the edge 54 in the x-axis 11 direction and is not curved relative to the yz plane. The upper the optically active edge 59 of the aperture 58 is curved relative to xy-planet. Aperture 58 reduces the dimming beam in the motor vehicle local area.
Objektivet 15 är en ej polerad pressglaskropp med sådan ytbeskaf- fenhet, att objektivets 15 avbildningskvalitet ger erforderlig oskärpa åt halvljusknippets ljus/mflæmgränsen.I strålriktningen 61 framför objektivet 15 är anordnat ett svagt ljusspridande filter 60, som likaledes är framställt av pressat glas och vars ytbeskaf- fenhet på liknande sätt åstadkommer oskärpa hos ljus/mörkergrän- Sen .The lens 15 is an unpolished press glass body with such a surface finish. that the imaging quality of the lens 15 provides required blur at the beam / m fl limit of the dipped beam.In the beam direction 61 in front of the lens 15 is arranged a weak light scattering filter 60, which is likewise made of pressed glass and whose surface similarity causes blur of light / dark boundary Sen.
Claims (10)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19833339879 DE3339879A1 (en) | 1983-11-04 | 1983-11-04 | HEADLIGHTS FOR LOW BEAMS OF MOTOR VEHICLES |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE8405490D0 SE8405490D0 (en) | 1984-11-01 |
| SE8405490L SE8405490L (en) | 1985-05-05 |
| SE448652B true SE448652B (en) | 1987-03-09 |
Family
ID=6213431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8405490A SE448652B (en) | 1983-11-04 | 1984-11-01 | Semi-light headlamps for motor vehicles |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE3339879A1 (en) |
| FR (1) | FR2554546B1 (en) |
| GB (1) | GB2149077B (en) |
| SE (1) | SE448652B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3628421A1 (en) * | 1986-08-21 | 1988-02-25 | Bayerische Motoren Werke Ag | HEADLIGHTS FOR MOTOR VEHICLES |
| JP2769259B2 (en) * | 1992-01-27 | 1998-06-25 | 株式会社小糸製作所 | Automotive headlamp |
| DE4429839B8 (en) * | 1994-08-23 | 2007-08-02 | Automotive Lighting Reutlingen Gmbh | Vehicle headlights |
| US5461553A (en) * | 1994-09-28 | 1995-10-24 | Robert Bosch Gmbh | Headlight for vehicle |
| DE19860669B4 (en) | 1998-12-29 | 2007-08-23 | Automotive Lighting Reutlingen Gmbh | Vehicle headlights according to the projection principle |
| FR2811408B1 (en) † | 2000-07-07 | 2002-10-18 | Valeo Vision | ELLIPTICAL PROJECTOR IN PARTICULAR FOR IMPROVED LOW PHOTOMETRY ROAD LIGHTING |
| JP2002367411A (en) * | 2001-06-05 | 2002-12-20 | Koito Mfg Co Ltd | Vehicle headlights |
| CN1820164A (en) | 2003-07-29 | 2006-08-16 | 图尔汗·阿尔塞里克 | Headlights that last long distances without glare |
| CZ299345B6 (en) * | 2003-10-06 | 2008-06-25 | Visteon Global Technologies, Inc. | Variable adaptive headlight system for motor vehicles |
| WO2006107287A1 (en) | 2005-04-05 | 2006-10-12 | Turhan Alcelik | A headlamp with long-distance illumination without glaring effect |
| AT511760B1 (en) * | 2011-08-08 | 2013-12-15 | Zizala Lichtsysteme Gmbh | LED LIGHT SOURCE MODULE FOR A LED MOTOR VEHICLE HEADLIGHT AND LED MOTOR VEHICLE HEADLAMP AND HEADLAMP SYSTEM |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1476297A (en) * | 1973-09-29 | 1977-06-10 | Lucas Electrical Ltd | Motor vehicle lamp assemblies |
| AU505317B2 (en) * | 1976-08-23 | 1979-11-15 | Thorn Electrical Industries Limited | Suppression of colour fringing in lamps |
| DE3334459C2 (en) * | 1983-09-23 | 1993-10-21 | Bosch Gmbh Robert | Low beam headlight reflector for motor vehicles |
-
1983
- 1983-11-04 DE DE19833339879 patent/DE3339879A1/en active Granted
-
1984
- 1984-09-28 FR FR848414961A patent/FR2554546B1/en not_active Expired
- 1984-10-04 GB GB08425108A patent/GB2149077B/en not_active Expired
- 1984-11-01 SE SE8405490A patent/SE448652B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE3339879A1 (en) | 1985-05-15 |
| SE8405490D0 (en) | 1984-11-01 |
| GB2149077A (en) | 1985-06-05 |
| FR2554546A1 (en) | 1985-05-10 |
| GB2149077B (en) | 1987-09-23 |
| DE3339879C2 (en) | 1992-08-06 |
| SE8405490L (en) | 1985-05-05 |
| FR2554546B1 (en) | 1989-03-31 |
| GB8425108D0 (en) | 1984-11-07 |
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