EP1111294A1 - Kfz-Scheinwerfer mit selektiver Spezializierung - Google Patents

Kfz-Scheinwerfer mit selektiver Spezializierung Download PDF

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Publication number
EP1111294A1
EP1111294A1 EP00403461A EP00403461A EP1111294A1 EP 1111294 A1 EP1111294 A1 EP 1111294A1 EP 00403461 A EP00403461 A EP 00403461A EP 00403461 A EP00403461 A EP 00403461A EP 1111294 A1 EP1111294 A1 EP 1111294A1
Authority
EP
European Patent Office
Prior art keywords
projector according
optical
mirror
face
mutual
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.)
Withdrawn
Application number
EP00403461A
Other languages
English (en)
French (fr)
Inventor
Norbert Brun
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.)
Valeo Vision SAS
Original Assignee
Valeo Vision SAS
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 Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP1111294A1 publication Critical patent/EP1111294A1/de
Withdrawn legal-status Critical Current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
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
    • F21S41/635—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by moving refractors, filters or transparent cover plates

Definitions

  • the present invention relates generally motor vehicle lighting projectors.
  • the object of the present invention is to achieve, in this context, a projector including a beam "Nominal" can be modified or specialized at the request, to adapt it to specific conditions of driving, without multiplying the number of headlamps and without overly complicating, or making more expensive, a standard projector.
  • the present invention provides a projector motor vehicle, comprising a light source cooperating with a mirror to generate a beam luminous lighting, characterized in that it comprises in addition, interposed on the path of part of the radiation at the exit of the mirror, an optical assembly having first and second optical elements deflectors able to selectively occupy a first mutual position in which they are successively crossed by said part of the radiation, and a second mutual position in which they are each crossed by two distinct parts of the radiation, so as to selectively get two light beams of different photometries.
  • a projector which includes a light source S, such as the filament of an incandescent lamp or the luminescent arc of a discharge lamp, which cooperates with a mirror M for generate a light beam.
  • a light source S such as the filament of an incandescent lamp or the luminescent arc of a discharge lamp
  • This projector has also a mirror, not shown, as well as all usual ancillary equipment.
  • an optical assembly of EO beam modification which consists of two transparent elements 10 and 20, which here show in view front view ( Figures 2a and 2b) the same rectangular outline.
  • the inner element 10 is connected to a fixed support (not shown).
  • the external element 20 is connected as to him to a mobile support (not shown) so that ability to be selectively moved vertically between a first position or high position, such as illustrated in FIGS. 1a, 2a and 3a, in which it’s right next to item 10, and a second position, or low position, in which it is, in the front view of Figure 3b, immediately below of item 10.
  • the support of the movable element 20 can be moved for example by an electromagnet controlled from the passenger compartment of the vehicle, or automatically function of sensors representative of the conditions of conduct.
  • the element 10 has a flat entry face 101 and generally perpendicular to the optical axis xx of the mirror M, and a convex outlet face 102 in the form of a portion of cylinder of revolution of vertical axis. He makes thus a plano-convex cylindrical lens.
  • the axis of said cylinder of revolution here is approximately centered on the optical element in the direction of its width, the element thus being generally symmetrical with respect to to its median vertical plane.
  • Element 20 has an entry face 201 concave cylindrical which, in the position of the figures 1a, 2a and 3a, substantially follows the shape of the face of element 10 exit, and a flat exit face 202 generally perpendicular to the above-mentioned optical axis xx.
  • the beam generated by the spotlight in this situation is the very beam which is generated by the cooperation between the source S and the mirror M, notwithstanding any adjustments of deviation formed on ice.
  • the optical assembly receives a radiation generally parallel to the optical axis xx, this radiation will keep at the output of the optical element this parallelism and contribute, in the beam, to a spot of central concentration of said beam.
  • the two optical elements 10 and 20 are offset from each other to reach the situation illustrated in FIGS. 1b, 2b and 3b, then we understand the optical elements cease to neutralize; the inner element 10 then behaves as an element which, in vertical projection on a plane horizontal, converge the light as illustrated on Figure 3b (light rays in solid lines), and after having crossed the convergence zone, the radiation diverges to obtain part of the light beam widened in lateral direction.
  • the optical element 20 behaves like a element which, in vertical projection on a plane horizontal, directly diverts the light (see light rays illustrated in dashed lines in Figure 3b), again to get an enlarged beam part in lateral direction.
  • the first position can be adopted for straight line and / or high speed traffic high, while the second position can be adopted for traffic in curves and / or at higher speeds low.
  • each element 10, 20 is movable, one upwards, and the other down, each over a distance substantially equal to half the height of the elements 10, 20.
  • the outlet face 102 'of the inner element 10 is constituted by a piece of convex cylinder whose circular section presents the shape of an arc of a circle whose PI1 chord which is not perpendicular to the optical axis x-x of the projector.
  • the entry face 201 ′ of the element 20 is constituted by a concave cylinder which marries at low distance the convex cylinder from the first element, with a arc string parallel to the aforementioned PI1 string.
  • elements 10 and 20 In the position where elements 10 and 20 are offset in height ( Figure 4b), they each behave like the combination of a prism and a lens cylindrical. More specifically, the inner element 10 has a prismatic effect which will give rise to a average deviation of the light laterally towards the left in front of the vehicle (to the right in the figure 4b), this light also being spread thanks to the convexity of the outlet face 102 '.
  • the external element 20 has a prismatic effect which will give rise to a deviation average light to the right in front of the vehicle (to the left in Figure 4b), substantially with the same degree of deviation as that achieved by the element interior 10, and the concave cylindrical entry face goes ensure spreading of this light.
  • this variant of the invention reinforces the beam laterally to the left and to the right more strongly than in the case of the form of previous realization, since in this case the light processed by the two elements 10, 20 offset only comes contribute to the beam only in the lateral regions of this one, but not in its central region.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
EP00403461A 1999-12-23 2000-12-08 Kfz-Scheinwerfer mit selektiver Spezializierung Withdrawn EP1111294A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9916374 1999-12-23
FR9916374A FR2803013A1 (fr) 1999-12-23 1999-12-23 Projecteur de vehicule automobile a specialisation selective

Publications (1)

Publication Number Publication Date
EP1111294A1 true EP1111294A1 (de) 2001-06-27

Family

ID=9553744

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00403461A Withdrawn EP1111294A1 (de) 1999-12-23 2000-12-08 Kfz-Scheinwerfer mit selektiver Spezializierung

Country Status (4)

Country Link
US (1) US20010006467A1 (de)
EP (1) EP1111294A1 (de)
JP (1) JP2001216819A (de)
FR (1) FR2803013A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1991243B (zh) * 2005-12-30 2010-04-14 鸿富锦精密工业（深圳）有限公司 变色灯具
US7810972B2 (en) * 2006-10-13 2010-10-12 Visteon Global Technologies, Inc. Headlamp assembly having an adjustable light beam direction

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR606316A (fr) * 1925-09-08 1926-06-11 Perfectionnement aux phares d'automobiles
FR952486A (fr) * 1946-08-27 1949-11-17 Philips Nv Phare routier
US4316241A (en) * 1979-12-13 1982-02-16 Koehler Manufacturing Company Method and apparatus for controlling reflected energy including dual light transmitting means for producing a spot to flood configuration
US4345303A (en) * 1979-10-02 1982-08-17 Cibie Projecteurs Optical systems permitting controlled shifting of the beam pattern in headlamps, especially for vehicles
JPH05139203A (ja) * 1991-11-15 1993-06-08 Nippondenso Co Ltd 車両用前照灯装置
DE4435446A1 (de) * 1994-03-18 1995-09-21 Bosch Gmbh Robert Scheinwerfer für Fahrzeuge

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR606316A (fr) * 1925-09-08 1926-06-11 Perfectionnement aux phares d'automobiles
FR952486A (fr) * 1946-08-27 1949-11-17 Philips Nv Phare routier
US4345303A (en) * 1979-10-02 1982-08-17 Cibie Projecteurs Optical systems permitting controlled shifting of the beam pattern in headlamps, especially for vehicles
US4316241A (en) * 1979-12-13 1982-02-16 Koehler Manufacturing Company Method and apparatus for controlling reflected energy including dual light transmitting means for producing a spot to flood configuration
JPH05139203A (ja) * 1991-11-15 1993-06-08 Nippondenso Co Ltd 車両用前照灯装置
DE4435446A1 (de) * 1994-03-18 1995-09-21 Bosch Gmbh Robert Scheinwerfer für Fahrzeuge

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 524 (M - 1483) 21 September 1993 (1993-09-21) *

Also Published As

Publication number Publication date
US20010006467A1 (en) 2001-07-05
JP2001216819A (ja) 2001-08-10
FR2803013A1 (fr) 2001-06-29

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