EP0602374B1 - Fahrzeugleuchte - Google Patents

Fahrzeugleuchte Download PDF

Info

Publication number
EP0602374B1
EP0602374B1 EP93117949A EP93117949A EP0602374B1 EP 0602374 B1 EP0602374 B1 EP 0602374B1 EP 93117949 A EP93117949 A EP 93117949A EP 93117949 A EP93117949 A EP 93117949A EP 0602374 B1 EP0602374 B1 EP 0602374B1
Authority
EP
European Patent Office
Prior art keywords
light
prism
vehicle lamp
optical elements
lamp according
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
EP93117949A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0602374A1 (de
Inventor
Martin Mügge
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.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
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 Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP0602374A1 publication Critical patent/EP0602374A1/de
Application granted granted Critical
Publication of EP0602374B1 publication Critical patent/EP0602374B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/28—Cover glass

Definitions

  • the invention relates to a vehicle lamp with a reflector or a lens for focusing the light rays emerging from an incandescent filament of an incandescent lamp and with a light disc connected in the beam path, with light-scattering optical elements arranged in rows and / or columns with a predetermined division on the inside of the light disc, wherein the optical elements are designed as lenses which scatter in the horizontal direction and / or vertical direction.
  • a motor vehicle headlight is arranged with a reflector for focusing the light rays emerging from a filament of an incandescent lamp and with a light disc connected in the beam path in rows and / or columns with a predetermined division on the inside of the light disc light-deflecting optical elements known.
  • These optical elements are designed as prisms and are formed from two prism flanks running towards one another. The prism flanks are connected to each other by radii, which are due to manufacturing technology and have no light-deflecting effect.
  • This known embodiment has the disadvantage that the lens also acts purely from the optical impression as a prism optic, it being disadvantageous in particular that the light is deflected into two lateral areas which are separated from one another and a central area connecting these lateral areas is not illuminated.
  • a vehicle lamp which has a reflector or a lens for focusing the light rays emerging from an incandescent filament of an incandescent lamp.
  • the light which is directed essentially parallel by the reflector or the lens, is followed in the beam path by a light disk which has lenses arranged next to one another.
  • the lenses are designed as vertically extending cylindrical lenses in order to achieve a predetermined horizontal scattering of the light.
  • the surfaces of the cylindrical lenses are provided with flat surfaces so that each surface deflects the light striking them into a predetermined area.
  • a vehicle lamp with the same features is known from German published patent application DE 40 20 081 A1, wherein in addition to scattering in the horizontal direction, scattering of the light in the vertical direction is additionally generated by the optical elements.
  • the prism surfaces applied to the lenses are adapted to the radius or the free shapes of the lens surface with a predetermined division of the lens and thus no light deflection angles greater than or equal to 30 degrees can be achieved.
  • the invention has for its object to provide a vehicle lamp, in which the lens has the uniform appearance of a lens optics with arranged at a predetermined division in rows and / or columns, designed as lenses, with a deflection behavior of the light, which both lens optics as well as a prism optics.
  • part or all of the optical elements in the horizontal or vertical section have two prism flanks, which form a light-deflecting prism, and a radius connecting the prism flanks, which forms a light-scattering lens, such that the prism flanks form angles to the lens, which deflect the light rays hitting the prism flanks into outer areas, which enclose an inner area into which the light rays hitting the radius are scattered, because in this way a vehicle light is created in a simple and cost-effective manner with a lens which has both the properties and the stylistic appearance of a lens optic also has the advantages of a prism optic, which consist in the fact that larger scattering angles can be achieved compared to the lens optic without the need for complex and expensive tools for producing the lens.
  • the radius has a tangential transition into the prism flanks, as a result of which, in particular in the case of multi-chamber lamps, a uniform appearance of the lens covering all the light functions can be achieved with a predetermined division of the optical elements arranged in columns and / or rows, since the tangential transition of the radius into the prism flanks due to the lack of sharp-edged transitions between the prism flanks and the radius of each optical element when viewed from the outside in its Appearance corresponds to the design of the overall optics of the lens of a cylinder or torus lens.
  • the advantage is that in a simple and inexpensive manner by varying the predetermined Divisions for the prism surfaces can determine both the appearance of the optical elements having the prism surfaces and the amounts of light to be scattered into the individual areas.
  • the radius is determined by the length of the chord between the transition points and the opening angle of the circular arc, which ensures that there is a tangential transition between the radius and the prism flanks and thus the appearance of the optical elements, the prism flanks have the appearance of cylindrical or torus lenses.
  • the prism scattering angle which determines the deflection of the light rays into the outer regions, is greater than or equal to 30 degrees, as a result of which any desired light function can be fulfilled by means of the vehicle lamp in accordance with the legal requirements.
  • optical elements provided with prism flanks are combined in a partial section of the lens results in a simple and inexpensive embodiment of a vehicle lamp in which only a part of the optical elements has to have prism flanks in order to achieve the required light distribution, the overall stylistic impression the lens maintains a uniform appearance.
  • At least a portion of at least one light function of the lens is assigned to a multi-chamber light having multiple light functions, because in this way a uniform appearance of the optical elements can be achieved even with multi-chamber lights over the entire lens, without individual light functions being separate from the multi-chamber light arranged vehicle lights must be arranged in the motor vehicle.
  • vehicle lamp as a reversing lamp proves to be particularly advantageous, since large deflection angles are required for reversing lamps and these are otherwise designed as prism optics which disrupt the stylistic appearance of a multi-chamber lamp, which is not the case when using the vehicle lamp according to the invention.
  • vehicle lamp as a rear fog lamp proves to be particularly advantageous because of the use of the light directed in parallel and the formation of the optical elements, high light values can be directed into the outer areas and thus the most homogeneous possible light distribution can be generated.
  • FIG. 1 shows a horizontal section through a vehicle lamp which has a reflector (RE) and an incandescent lamp (GL) inserted into the reflector (RE).
  • the light rays emerging from the filament (GW) of the incandescent lamp (GL) are bundled by the reflector (RE) into light directed essentially parallel to the longitudinal axis of the vehicle (Y).
  • the reflector (RE) is part of a housing, for. B. a multi-chamber lamp, which is covered by a downstream lens (L).
  • the lens (L) has light-scattering optical arranged in rows and / or columns over its entire area at a predetermined division (T) on the inside Elements (OE), of which only a few are shown here.
  • the optical elements (OE) can be designed as cylindrical lenses with essentially horizontal scattering behavior, but also as torus lenses that scatter the light impinging on them in both the horizontal and vertical directions.
  • the reflector (RE) can also be replaced by a lens that bundles the light.
  • the optical elements (OE) can be designed as convex optical elements (OE) as shown or, as is possible in another exemplary embodiment, as concave optical elements (OE), as a result of which the greatest possible variation in the design the lens (L) and predetermined light distribution is guaranteed.
  • the lens (L) can be crystal clear or have a color, in particular a gray color, the good light utilization of the light bundled by the reflector (RE) through the optical elements (OE) resulting in the light losses caused by the coloration, in particular in the outer areas (B1, B2) can be compensated.
  • the vehicle lamp shown here by way of example is a version to be installed in the rear corner region of the motor vehicle body, which is particularly suitable for use in combination models. It can be seen from the auxiliary line (H) shown that light-directing elements on the reflector (RE) do not allow the light emitted by the filament (GW) to be deflected in the 45 degree direction specified by the auxiliary line (H), since here the housing wall (GH) and a vehicle body, not shown here, is in the way. Since a normal lens optics with which a maximum light deflection of less than or minus 30 degrees is possible, with the arrow of the lens specified here, which cannot be reached here by the auxiliary line (H) given the 45 degree deflection direction, this lamp is, for. B. as Reversing light can only be used if the lens has a prism optic. However, this is complex and costly to manufacture and considerably disturbs the overall stylistic appearance of the lens, in particular a multi-chamber lamp.
  • FIG. 2 shows a horizontal section through the lens (L) according to the detail (U) from FIG. 1.
  • Part or all of the optical elements of the lens (L) have two prism flanks (PF1, PF2) and, depending on the desired light distribution in the horizontal section a radius (R) connecting the prism flanks (PF1, PF2).
  • the prism flanks (PF1, PF2) have angles (A1, A2) to the lens and deflect the light beams (LS) impinging on the prism flanks (PF1, PF2) according to a predetermined prism scattering angle (D), the angles on the first prism flank (D) PF1) impinging light rays (LS) with positive prism scattering angle (D) are deflected and the light rays impinging on the second prism flank (PF2) (LS) with negative prism scattering angle (D) are deflected.
  • the section of the optical elements (OE), which is predetermined by the radius (R), has a scattering behavior, such as a known cylinder or torus lens.
  • the division (T) determining the distance between the individual optical elements (OE) is predetermined and is the same over the entire optical disc or is used alternately from column to column or row to row with a further division.
  • the prism angles (A1, A2) result from the desired angular deflection of the light beams (LS), which corresponds to the prism scattering angle (D), taking into account the angle (G) of the lens (L) to the horizontal vehicle transverse axis (X), which is referred to as the arrow. .
  • the longitudinal axis of the vehicle is designated (Y).
  • the angle (G) indicating the arrowing is here, for example, 25 degrees.
  • the prism flanks (PF1, PF2) use the specified division (T) and the first division (T1) and the second division (T2) for the prism flanks (PF1, PF2), through their variation both the stylistic appearance of the optical elements (OE ) as well as those determined by the prism flanks (PF1, PF2) and by the radius (R) for certain light values.
  • Figure 3 shows a single optical element (OE) in its assignment to the vehicle network (FN), represented by the vehicle longitudinal axis (Y) and the horizontal vehicle transverse axis (X).
  • OE optical element
  • the chord (S) of the arc between the transition points (P1, P2) is determined in a known manner from the coordinates for the transition points (P1, P2), the opening angle (O) of the arc, a prism angle (A1 or A2) and the angle (G).
  • the radius (R) can be determined in a known manner from the length of the chord (S) and the opening angle (O) of the circular arc.
  • Such a mathematical, empirical or experimentally determined form of the optical element (OE) creates a vehicle lamp with a lens (L) whose stylistic appearance corresponds to that of a pure lens optic, since the radius tangentially merges into the prism flanks and which both Effect of a lens optics and that of a prism optics with large light deflection angles.
  • FIG. 4 shows a beam path through a lens (L) of a vehicle lamp according to the invention, in which the prism angles (A1, A2) are designed to deflect the light by 45 degrees.
  • the lens (L) which is shown here again in horizontal section, has optical elements (OE), only a few of which are shown here.
  • the light bundled by the reflector (RE), not shown here, essentially parallel to the longitudinal axis (Y) of the vehicle is directed into a first region (B1) by the first prism flank (PF1) of the optical element (OE) in accordance with the predetermined prism angle (D).
  • the light impinging on the second prism flank (PF2) is directed into the second outer region (B2) in accordance with the predetermined prism scattering angle (D).
  • the essentially parallel light striking the radius (R) is scattered into a third region (B3) lying between the outer regions (B1, B2).
  • the light beams (LS) are thus deflected by each prism flank (PF1, PF2) and the radius (R) into a predetermined, defined area (B1, B2, B3).
  • FIG. 5 shows a representation corresponding to FIG. 4, in which, with the same division (T), the prism angles (A1, A2) are designed for light deflection according to the prism scattering angle (D) of 30 degrees and a larger radius (R) is used, as a result of which less scattering in the inner region (B3) of the light beams (LS) is generated.
  • all optical elements can have prism flanks (PF1, PF2), it is possible that only special sub-areas required to represent a given light distribution have optical elements (OE) with prism flanks (PF1, PF2) or can have individual prism flanks (PF1, PF2) distributed over all optical elements (OE).
  • Columns or rows of two different prism scattering angles (D) having optical elements (OE) can be arranged alternating in columns or rows.
  • z For example, a combination of the embodiment shown in FIG. 4 and FIG. 5 in this way is advantageous, since a particularly uniform light distribution is thus generated, in which high light components in the side areas are ensured.
  • the refraction factor (N) of the lens (L) has the value N equal to 1.492
  • the prism scattering angle (D) the value D equal to plus / minus 45 Degrees
  • the angle (G) is minus 25 degrees
  • the pitch (T) is 3.5 mm
  • the first pitch (T1) is 0.68 mm and the second pitch is 1.1 mm
  • the first prism angle is ( A1) is 64 degrees
  • the second angle (A2) is minus 54.5 degrees
  • the first transition point (P1) has the coordinates 1.2 mm and 0.98 mm
  • the second transition point (P2) has the coordinates 2 , 83 mm and 0.38 mm
  • the chord (S) has a length of 1.737 mm
  • the opening angle (O) of the circular arc is 118.4 degrees
  • the radius (R) is 1.01 mm.
  • the optical elements (OE) can also have the structure shown and described in FIG. 2 in the vertical section of the lens (L) .

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)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
EP93117949A 1992-12-16 1993-11-05 Fahrzeugleuchte Expired - Lifetime EP0602374B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4242527A DE4242527C2 (de) 1992-12-16 1992-12-16 Fahrzeugleuchte
DE4242527 1992-12-16

Publications (2)

Publication Number Publication Date
EP0602374A1 EP0602374A1 (de) 1994-06-22
EP0602374B1 true EP0602374B1 (de) 1997-03-05

Family

ID=6475478

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93117949A Expired - Lifetime EP0602374B1 (de) 1992-12-16 1993-11-05 Fahrzeugleuchte

Country Status (4)

Country Link
EP (1) EP0602374B1 (pt)
BR (1) BR9305058A (pt)
DE (2) DE4242527C2 (pt)
ES (1) ES2098630T3 (pt)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3163271B2 (ja) 1997-05-22 2001-05-08 株式会社小糸製作所 車輌用前照灯
DE19818009C2 (de) * 1998-04-22 2003-05-22 Mcgavigan John Ltd Mehrschicht-Abdeckung für Mehrfachfunktions-Heckleuchten für Straßenfahrzeuge

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1916514A (en) * 1931-05-09 1933-07-04 Guide Lamp Corp Auxiliary driving light
US4198182A (en) * 1975-09-20 1980-04-15 Lucas Industries Limited Method of manufacturing a mould for producing a lamp lens element
IT1128009B (it) * 1980-02-01 1986-05-28 Fiat Auto Spa Dispositivo di illuminazione postriore di retromarcia per autoveicoli
DE3245141C2 (de) * 1982-12-07 1994-09-22 Bosch Gmbh Robert Nebelscheinwerfer für Kraftfahrzeuge
DE3707738C2 (de) * 1987-03-11 1994-01-13 Hella Kg Hueck & Co Fahrzeugleuchte mit einer mit optischen Mitteln versehenen Optikscheibe
IT1211618B (it) * 1987-12-22 1989-11-03 Fiat Auto Spa Fanale retronebbia per autoveicoli
DE3905779A1 (de) * 1989-02-24 1990-08-30 Reitter & Schefenacker Kg Leuchte, insbesondere kraftfahrzeugrueckleuchte
DE4020081A1 (de) * 1990-06-23 1992-01-02 Bosch Gmbh Robert Fahrzeugleuchte
FR2691231B1 (fr) * 1992-05-12 1999-05-07 Valeo Vision Voyant a deviation laterale pour vehicule automobile, et feu de signalisation l'incorporant.

Also Published As

Publication number Publication date
DE4242527A1 (de) 1994-06-23
DE4242527C2 (de) 1996-02-08
ES2098630T3 (es) 1997-05-01
EP0602374A1 (de) 1994-06-22
BR9305058A (pt) 1994-06-21
DE59305614D1 (de) 1997-04-10

Similar Documents

Publication Publication Date Title
EP3403021B1 (de) Beleuchtungseinheit für einen kraftfahrzeugscheinwerfer zum erzeugen eines lichtbündels mit hell-dunkel-grenze
DE4021987C2 (pt)
EP0122972B1 (de) Blendungsfreie Leuchte für eine stabförmige Lichtquelle
DE3542292A1 (de) Leuchte fuer ein kraftfahrzeug
DE102008005488A1 (de) Scheinwerfer für Fahrzeuge
DE19803537A1 (de) Leuchte für Fahrzeuge
DE69707078T2 (de) Kraftfahrzeug- Scheinwerfer mit einem Lichtleiter
DE3148668A1 (de) Signalleuchte, insbesondere blinkleuchte fuer kraftfahrzeuge
DE69218162T2 (de) Abdeckscheibe einer optischen Einrichtung für Signalleuchte, die mit pseudo-katadioptrischen Elementen versehen ist
DE2459327A1 (de) Leuchte mit lichtverteilungsscheibe
EP0602374B1 (de) Fahrzeugleuchte
DE2655810A1 (de) Begrenzungs- und markierleuchte
DE10314357A1 (de) Kraftfahrzeugleuchte, insbesondere Zusatzbremsleuchte
EP0404990B1 (de) Kraftfahrzeugleuchte
DE4324037B4 (de) Signalleuchte, insbesondere für Kraftfahrzeuge
DE4322607C1 (de) Lichtscheibe einer mehrere Lichtfunktionen aufweisenden Fahrzeugleuchte
DE4129955C2 (de) Kraftfahrzeug-Beleuchtungseinrichtung mit Lichtleiterlementen
EP0369338A2 (de) Indirekt abstrahlende Leuchte
DE3711394C2 (pt)
EP0669493B1 (de) Blinkleuchte
DE3008773C2 (de) Nebelschlußleuchte für Kraftfahrzeuge
DE3103175C2 (de) Rückfahrscheinwerfer für Kraftfahrzeuge
DE3248386C2 (de) Streuscheibe für einen Kraftfahrzeugscheinwerfer, die einen Neigungsknick aufweist
DE3408718C2 (pt)
DE10353645B4 (de) Leuchte mit asymmetrischer Lichtabstrahlung

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

17P Request for examination filed

Effective date: 19940411

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT

17Q First examination report despatched

Effective date: 19950619

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

ITF It: translation for a ep patent filed
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

REF Corresponds to:

Ref document number: 59305614

Country of ref document: DE

Date of ref document: 19970410

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2098630

Country of ref document: ES

Kind code of ref document: T3

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19970415

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20011022

Year of fee payment: 9

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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: 20021105

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20021111

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20021119

Year of fee payment: 10

GBPC Gb: european patent ceased through non-payment of renewal fee
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: 20031106

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: 20040730

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20041028

Year of fee payment: 12

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20031106

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051105

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: 20060601