EP0773400B1 - Projecteur de véhicule automobile, comportant un miroir capable d'engendrer par lui-même un faisceau à coupure en V - Google Patents
Projecteur de véhicule automobile, comportant un miroir capable d'engendrer par lui-même un faisceau à coupure en V Download PDFInfo
- Publication number
- EP0773400B1 EP0773400B1 EP96402390A EP96402390A EP0773400B1 EP 0773400 B1 EP0773400 B1 EP 0773400B1 EP 96402390 A EP96402390 A EP 96402390A EP 96402390 A EP96402390 A EP 96402390A EP 0773400 B1 EP0773400 B1 EP 0773400B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cut
- line
- reflector
- horizontal
- plane
- 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
Links
Images
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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
- F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
- F21S41/335—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with continuity at the junction between adjacent areas
-
- 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
- F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
- F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
Definitions
- the present invention relates generally to automotive headlights, and more especially a new projector whose mirror is designed to cooperate with a source without a cup occultation, that is to say emitting light while around it, to form a passing beam European standard.
- Such a European beam is delimited by a cut which is defined in a projection plane normalized by two half-straight lines, one horizontal on the side of the vehicles rolling in opposite direction (left for a direction of right-hand traffic), and the other on the side of the road road, inclined upwards by an angle ⁇ , called angle of cutoff bearing, about 15 °.
- the half-cut horizontal is on the left, while the half cut raised is on the right.
- FR-A-2 536 502 a form mirror defined mathematically so that it positions the different images of a source such as cylindrical filament below a straight cut, and preferably with the highest points of these images located in the vicinity of said cut.
- the mirror is subdivided into an upper part which generates a beam part bounded by a horizontal cut and extending from one side on either side of the central axis, and a lower part which generates a part of the beam delimited by a cut inclined, for example at 15 °, with respect to the horizontal, and also extending on either side of the central axis.
- the present invention aims to overcome these drawbacks and to propose a new solution, particularly simple, to make a European passing beam standardized presenting, in the absence of any intervention of the ice, a preform in width and a spot of well positioned and well sized concentration, without that this is at the expense of the definition of the cut.
- the invention provides a vehicle headlamp automobile as defined in claim 1.
- a mirror 10 of a motor vehicle headlamp which also includes a light source such as incandescent filament 20 of a lamp mounted in a hole lamp 11 from the mirror, and a closing glass 30, slightly striated or smooth.
- the mirror in this case comprises two zones 12a, 12b.
- the first zone 12a extends over 262.5 ° between a first limit half-plane P1 extending horizontally and a second limit half-plane P2 extending offset angularly 7.5 ° with respect to a vertical half-plane descending.
- the second zone 12b covers the rest of the mirror, on 97.5 °, between the aforementioned half-planes.
- Such a surface is capable of generating images of the filament which are all located below and in the vicinity of a horizontal cut, and which are offset, in this case to the left, relative to the reference center H located on the optical axis.
- Zone 12b is in turn produced according to the equation (3) from page 9 of the same document, to present the same surface type as zone 12a, with an offset of 15 ° (this value is in no way limiting). However, in in this case the parameters of the equation are chosen for ensure a shift of the filament images to the right.
- ) and f v f 0 - ((zcos ⁇ - ysin ⁇ ) /
- ⁇ is the bearing angle of the inclined half-cut and is for example 15 °.
- zones 12a and 12b connect with continuity of order one in the half-plane of transition P2, that is to say that it exists between surfaces a very slight bend, but no dropout or step.
- this elbow is attenuated until practically disappear during the polishing step of the mold or imprint used to make the mirror.
- Figure 3a shows by isocandela curves in a normalized projection plane (H, h, v) the photometry of the part of the beam generated by zone 12a, in the absence closing ice.
- H, h, v normalized projection plane
- Figure 3b shows the photometry obtained for the area 12b. It is observed that the half-cut noted Hc is obtained with sharpness over a substantial extent, and that the concentration immediately to the right of the east axis satisfactory, to properly light the side of the road in the distance.
- the mirror 10 ' consists of two zones 12a' and 12b ', separated by two half-planes P1' and P2 'aligned with each other and offset by 7.5 ° (non-limiting value) counterclockwise by with respect to the upper and lower vertical half-planes respectively.
- zone 12a corresponds to equation (2) of document FR-A-2 599 121 mentioned above, while the zone 12b 'meets equation (3) also mentioned above.
- Figures 6a and 6b illustrate the photometry of the two beam parts obtained respectively with the zones 12a 'and 12b', in the absence of ice.
- a certain width is already acquired from the fact that the two beam parts occupy substantially two juxtaposed areas of the cut, while that the concentration spots of the two beam parts will merge into a spot of enlarged concentration whose the intensity is not excessive.
- the part of the beam extending under the inclined half-cut Hc of the screen of normalized projection is enhanced in intensity.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
- (x,y,z) sont les coordonnées cartésiennes selon les axes représentés sur les figures 1 et 2,
- f0 est une distance focale imaginaire, égale à la distance suivant 0x entre l'origine 0 et le centre du filament en direction axiale,
- l est la demi-longueur du filament,
- r est le rayon du filament, et
- n est un paramètre réel positif choisi dans l'intervalle [0, +∞].
Claims (4)
- Projecteur de véhicule automobile, comprenant une source lumineuse (20), telle que le filament d'une lampe à incandescence, émettant librement autour d'elle, un miroir (10; 10') et une glace (30), le miroir étant apte à engendrer par lui-même un faisceau délimité par une coupure définie par une demi-coupure horizontale (hH) et une demi-coupure (Hc) relevée d'un angle donné par rapport à l'horizontale, les deux demi-coupure se raccordant au niveau d'un axe central miroir, le miroir étant constitué par deux zones (12a, 12b; 12a', 12b') séparées par deux demi-plans de transition (P1, P2; P1', P2') passant au voisinage de la source, et les deux zones engendrant des parties de faisceau délimitées respectivement par une coupure horizontale englobant ladite demi-coupure horizontale et par une coupure inclinée englobant ladite demi-coupure relevée, caractérisé en ce qu'au moins l'un des deux demi-plans de transition s'étend essentiellement verticalement, en ce que la première zone (12a; 12a') du miroir est constituée par une surface engendrant une partie de faisceau qui, au voisinage de la coupure, est décalée du côté de la demi-coupure horizontale (hH) par rapport audit axe central, et en ce que la seconde zone (12b; 12b') du miroir est constituée par une surface engendrant une partie de faisceau qui, au voisinage de la coupure, est décalée du côté de la demi-coupure relevée (Hc) par rapport audit axe central.
- Projecteur selon la revendication 1, caractérisé en ce qu'un premier demi-plan de transition (P1) est sensiblement horizontal et en ce qu'un second plan de transition (P2) est décalé angulairement par rapport à un demi-plan vertical inférieur, du côté opposé au premier demi-plan, d'une valeur (a/2) sensiblement égale à la moitié de l'angle (a) de relèvement de la demi-coupure relevée, la première zone (12a) étant la zone de plus grande étendue angulaire.
- Projecteur selon la revendication 1, caractérisé en ce que les premier et second demi-plans de transition (P1', P2') sont alignés et décalés angulairement, par rapport à deux demi-plans verticaux respectivement supérieur et inférieur, dans le même sens et d'une même valeur (α/2) sensiblement égale à la moitié de l'angle (α) de relèvement de la demi-coupure relevée.
- Projecteur selon l'une des revendications 1 à 3, caractérisé en ce que toutes les images de la source ont leur point le plus haut situé au voisinage de la demi-coupure respective (hH, Hc).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9513203 | 1995-11-08 | ||
FR9513203A FR2740858B1 (fr) | 1995-11-08 | 1995-11-08 | Projecteur de vehicule automobile, comportant un miroir capable d'engendrer par lui-meme un faisceau a coupure en v |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0773400A1 EP0773400A1 (fr) | 1997-05-14 |
EP0773400B1 true EP0773400B1 (fr) | 2003-10-01 |
Family
ID=9484349
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96402390A Expired - Lifetime EP0773400B1 (fr) | 1995-11-08 | 1996-11-08 | Projecteur de véhicule automobile, comportant un miroir capable d'engendrer par lui-même un faisceau à coupure en V |
Country Status (6)
Country | Link |
---|---|
US (1) | US5951156A (fr) |
EP (1) | EP0773400B1 (fr) |
JP (1) | JPH09167503A (fr) |
DE (1) | DE69630185T2 (fr) |
ES (1) | ES2208722T3 (fr) |
FR (1) | FR2740858B1 (fr) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2536502B1 (fr) * | 1982-11-19 | 1987-01-09 | Cibie Projecteurs | Projecteur de croisement pour vehicule automobile |
FR2599121B1 (fr) * | 1986-05-26 | 1988-09-16 | Cibie Projecteurs | Projecteur de croisement sans coupelle a concentration decalee |
DE3808086A1 (de) * | 1988-03-11 | 1989-09-28 | Hella Kg Hueck & Co | Reflektor fuer abgeblendete oder abblendbare kraftfahrzeugscheinwerfer |
DE4206881A1 (de) * | 1992-03-05 | 1993-09-09 | Bosch Gmbh Robert | Abblendlichtscheinwerfer fuer kraftfahrzeuge |
FR2732747B1 (fr) * | 1995-04-06 | 1997-06-20 | Valeo Vision | Projecteur de vehicule automobile capable d'emettre un faisceau delimite par une coupure a deux demi-plans decales en hauteur |
-
1995
- 1995-11-08 FR FR9513203A patent/FR2740858B1/fr not_active Expired - Fee Related
-
1996
- 1996-11-07 US US08/744,916 patent/US5951156A/en not_active Expired - Fee Related
- 1996-11-08 JP JP8296388A patent/JPH09167503A/ja active Pending
- 1996-11-08 ES ES96402390T patent/ES2208722T3/es not_active Expired - Lifetime
- 1996-11-08 DE DE69630185T patent/DE69630185T2/de not_active Expired - Lifetime
- 1996-11-08 EP EP96402390A patent/EP0773400B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2740858B1 (fr) | 1998-01-23 |
JPH09167503A (ja) | 1997-06-24 |
ES2208722T3 (es) | 2004-06-16 |
FR2740858A1 (fr) | 1997-05-09 |
EP0773400A1 (fr) | 1997-05-14 |
DE69630185D1 (de) | 2003-11-06 |
DE69630185T2 (de) | 2004-07-29 |
US5951156A (en) | 1999-09-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0250284B1 (fr) | Projecteur de croisement sans coupelle à concentration décalée | |
EP0256930B1 (fr) | Projecteur antibrouillard à filament transversal pour véhicule automobile | |
FR2694373A1 (fr) | Projecteur de véhicule automobile comportant une lampe à deux filaments pour engendrer sélectivement un faisceau antibrouillard et un faisceau de route. | |
EP0628765B1 (fr) | Projecteur du genre elliptique pour véhicule automobile | |
EP0684420B1 (fr) | Projecteur comportant une lampe à deux filaments pour engendrer un faisceau coupé et un faisceau non coupé | |
EP0645578B1 (fr) | Projecteur à glace lisse, notamment pour véhicule automobile, et procédé de fabrication du réflecteur d'un tel projecteur | |
EP0933585B1 (fr) | Projecteur à source transversale pour véhicule automobile susceptible d'émettre un faisceau à coupure nette | |
EP0258116B1 (fr) | Projecteur croisement-route à deux filaments transversaux pour véhicule automobile | |
FR2793000A1 (fr) | Projecteur bi-fonction a source unique et a optique fixe pour vehicule automobile | |
EP0966633B1 (fr) | Projecteur du genre elliptique pour vehicule automobile | |
FR2793542A1 (fr) | Projecteur du genre elliptique a deux fonctions d'eclairage pour vehicule automobile | |
EP1170546A1 (fr) | Projecteur elliptique à modification de faisceau par mouvement d'éléments optiques | |
EP0773400B1 (fr) | Projecteur de véhicule automobile, comportant un miroir capable d'engendrer par lui-même un faisceau à coupure en V | |
FR2760068A1 (fr) | Projecteur de vehicule automobile a miroir a zones juxtaposees lateralement, et procede de fabrication d'un tel miroir | |
FR2797029A1 (fr) | Projecteur du genre elliptique pour vehicule automobile, susceptible d'engendrer un faisceau lumineux a deux fonctions | |
EP0933586B1 (fr) | Projecteur de véhicule automobile, comportant une source transversale et apte à engendrer un faisceau à coupure non rectiligne | |
FR2808867A1 (fr) | Projecteur bi-fonction a source lumineuse unique et occulteur mobile pour vehicule automobile | |
EP0736726B1 (fr) | Projecteur de véhicule automobile capable d'émettre un faisceau délimité par une coupure à deux demi-plans décalés en hauteur | |
EP1096196A1 (fr) | Projecteur de véhicule, notamment projecteur de croisement, à encombrement réduit | |
FR2822929A1 (fr) | Projecteur a encombrement reduit pour vehicule automobile | |
FR2751051A1 (fr) | Projecteur de vehicule automobile comportant un cache de lumiere directe a bras support vertical et un miroir adapte | |
EP0723109B1 (fr) | Projecteur de véhicule automobile comportant des moyens dioptriques interposés entre la source et le miroir | |
FR2793002A1 (fr) | Projecteur a deux fonctions, dont une d'enrichissement de faisceau de croisement, pour vehicule automobile | |
FR2802283A1 (fr) | Projecteur du genre elliptique a miroir non specifique, capable de former deux faisceaux de croisement specifiques | |
FR2797030A1 (fr) | Projecteur du genre elliptique pour vehicule automobile, susceptible d'engendrer un faisceau lumineux a deux fonctions |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES FR GB IT |
|
17P | Request for examination filed |
Effective date: 19971103 |
|
17Q | First examination report despatched |
Effective date: 20001214 |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FR GB IT |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: 7F 21V 7/00 A |
|
REF | Corresponds to: |
Ref document number: 69630185 Country of ref document: DE Date of ref document: 20031106 Kind code of ref document: P |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20031204 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2208722 Country of ref document: ES Kind code of ref document: T3 |
|
PLBQ | Unpublished change to opponent data |
Free format text: ORIGINAL CODE: EPIDOS OPPO |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
PLAX | Notice of opposition and request to file observation + time limit sent |
Free format text: ORIGINAL CODE: EPIDOSNOBS2 |
|
26 | Opposition filed |
Opponent name: AUTOMOTIVE LIGHTING REUTLINGEN GMBH Effective date: 20040618 |
|
PLAX | Notice of opposition and request to file observation + time limit sent |
Free format text: ORIGINAL CODE: EPIDOSNOBS2 |
|
PLBP | Opposition withdrawn |
Free format text: ORIGINAL CODE: 0009264 |
|
PLBD | Termination of opposition procedure: decision despatched |
Free format text: ORIGINAL CODE: EPIDOSNOPC1 |
|
PLBM | Termination of opposition procedure: date of legal effect published |
Free format text: ORIGINAL CODE: 0009276 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: OPPOSITION PROCEDURE CLOSED |
|
27C | Opposition proceedings terminated |
Effective date: 20060606 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20061110 Year of fee payment: 11 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20071108 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071108 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20121113 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20121123 Year of fee payment: 17 Ref country code: IT Payment date: 20121128 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20121220 Year of fee payment: 17 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20140731 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 69630185 Country of ref document: DE Effective date: 20140603 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140603 Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20131108 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20131202 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20150407 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20131109 |