EP1033527A2 - Scheinwerfer für Kraftfahrzeuge - Google Patents
Scheinwerfer für Kraftfahrzeuge Download PDFInfo
- Publication number
- EP1033527A2 EP1033527A2 EP00301700A EP00301700A EP1033527A2 EP 1033527 A2 EP1033527 A2 EP 1033527A2 EP 00301700 A EP00301700 A EP 00301700A EP 00301700 A EP00301700 A EP 00301700A EP 1033527 A2 EP1033527 A2 EP 1033527A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- headlight
- light beam
- objective
- boundary part
- combined
- 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- Withdrawn
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
- F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity 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
- F21S41/331—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas
- F21S41/333—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas with discontinuity at the junction between adjacent areas
Definitions
- the present invention relates to a combined headlight for motor vehicles with enhanced lighting effectiveness of the optical system.
- headlights of projection design were developed.
- Such a headlight is comprised of a reflector of elliptic type, a shield limiting the light beam and a simple objective that depicts brightness contrast of the shield dark area and the illuminated shield background.
- the lighting efficiency of the system is defined by the angle of view of the ellipsoid reflector, the angle of view of the objective and the light quantity shaded by the shield.
- the photometric performance of headlights has a significant influence on optimisation of the light beam shapes in front of a vehicle and thereby also on traffic safety.
- An increase in the lighting efficiency by a decrease in the quantity of light shaded by a shield is disclosed in CZ 275 670.
- the separated light beams are produced by combining two types of optical lighting systems, a projecting system and a simple mirror surface, whereby, both systems have a common light source.
- the projection system forms the central part of a headlight in a view into the headlight.
- the mirror system forms the boundary part of the headlight.
- the mirror boundary part of a headlight utilises the light of a source that can not be efficiently used by the objective in the central part of a headlight.
- the projection central part of a headlight produces a scattered light beam, the mirror boundary part produces the straight concentric light beam around a maximum.
- this configuration makes possible to design a very compact headlight suitable both for dry and wet roads.
- wet roads it is desirable to decrease the headlight luminous intensity in the area of small scattering ( ⁇ 7°).
- a decrease in the luminous intensity of a headlight in this area can be obtained by shading of the mirror boundary part of a headlight that produces the straight concentric light beam.
- the configuration of a headlight described above also decreases psychological dazzling of the opposite direction drivers (or dazzling coming from a rear view mirror) as a consequence of an enlarged shining area of a headlight.
- another advantage of this configuration is that the mirror boundary parts of a headlight function as a reflecting light of a parked vehicle when visibility is decreased. This makes a parked vehicle more visible.
- Figure 1 shows a horizontal cross-sectional illustration of a headlight.
- Figure 2 shows a front view of a headlight.
- Figure 3 shows a schematic illustration of a testing wall illuminated by a projector central and mirror boundary part of a headlight.
- Figure 4 shows a schematic view of a headlight and an illuminated testing wall.
- Figure 1 shows a combined headlight comprising a light source 1 , reflective central ellipsoid segments that form a headlight central part 2 , reflective boundary mirror segments that form a headlight boundary part 5 , concave shields 3 and an aspherical objective 4 .
- Said reflector is comprised of two parts of different geometry and function.
- Said central part 2 is geometrically more like an ellipsoid and said boundary part 5 is geometrically more like a paraboloid.
- Figure 3 shows a schematic illustration of individual light beams of the central 2 and the boundary 5 parts of a headlight.
- the area 100 represents the scattered light beam on a measuring wall coming from the headlight central part 2 .
- the area 200 represents the straight concentric light beam coming from said reflector boundary part 5 .
- a halogen bulb with a longitudinal or a transversal filament is used as a light source 1 .
- Said shield 3 is concave in the direction to said objective 4 .
- the cutting edges of said shield 3 are situated in the space of the body area of said objective 4 . Bending of said shield 3 increases lighting efficiency of the segments of said reflector boundary part 5 .
- Said objective 4 is a plano-convex aspherical lens.
- Reflected light of said reflector central part 2 passes above said shield 3 into said objective 4 and illuminates a measuring wall by a scattered light beam 100.
- the general shape of said beam 100 having horizontal dimension d c (measured at the isocurve 400 cd) and a 15 degrees slope 300 is formed by said reflector ellipsoidal central part 2 which is more open in the horizontal cross-sections parallel to the plane H C -H C than the ellipsoid with focuses F 1 -F 2 and more closed than the ellipsoid with focuses F 1 -F 3 (F 1 -F 3 ') .
- the final rather sharp interface between light and darkness at the horizon in the beam 100 is obtained by the shape of the shield 3 .
- Light emitted by said light source 1 and reflected from said reflector boundary part 5 passes mainly along said objective 4 , whereby it illuminates a measuring wall by a straight concentric light beam 200 .
- the straight concentric light beam 200 having horizontal dimension d P (measured on isocurve 700 cd) is produced by said reflector boundary part 5 because the boundary part 5 is formed by paraboloids with focuses f T and f B .
- the paraboloid focus f T of said reflector boundary part 5 above the horizontal cross-section H C - H C is on the nearer end of said light source 1 with regard to the top of said reflector central part 2 .
- the paraboloid focus f B of said reflector boundary part 5 bellow the horizontal cross-section H C - H C is at the more distant end of said light source 1 with regard to the top of said reflector central part 2 .
- the reflector boundary part 5 can also be a free mirror surface that is geometrically nearly like a paraboloid with focus F 1 and by its functional shape it produces an image of the light source 1 below the horizontal line H-H.
- the horizontal dimension d c of the beam 100 is minimally three times greater than the horizontal dimension d p of the beam 200, whereby d c is minimally 45°.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CZ70499 | 1999-03-02 | ||
CZ1999704A CZ9900704A3 (cs) | 1999-03-02 | 1999-03-02 | Kombinovaný světlomet pro motorová vozidla |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1033527A2 true EP1033527A2 (de) | 2000-09-06 |
EP1033527A3 EP1033527A3 (de) | 2001-10-24 |
Family
ID=5462124
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00301700A Withdrawn EP1033527A3 (de) | 1999-03-02 | 2000-03-02 | Scheinwerfer für Kraftfahrzeuge |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1033527A3 (de) |
CZ (1) | CZ9900704A3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016122188A1 (de) | 2015-11-20 | 2017-05-24 | Varroc Lighting Systems, s.r.o. | Lichtvorrichtung, insbesondere ein Projektorsystem für einen Scheinwerfer für Kraftfahrzeuge |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4135596A1 (de) * | 1991-10-29 | 1993-05-06 | Robert Bosch Gmbh, 7000 Stuttgart, De | Scheinwerfer fuer kraftfahrzeuge |
CZ287690B6 (cs) * | 1996-01-29 | 2001-01-17 | Autopal S. R. O. | Světlomet s komplexním reflektorem |
EP0843126A3 (de) * | 1996-11-14 | 2000-04-26 | Stanley Electric Co., Ltd. | Projektions- Scheinwerfer |
EP0854316B1 (de) * | 1997-01-17 | 2005-04-27 | Stanley Electric Co., Ltd. | Scheinwerfer |
-
1999
- 1999-03-02 CZ CZ1999704A patent/CZ9900704A3/cs unknown
-
2000
- 2000-03-02 EP EP00301700A patent/EP1033527A3/de not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
None |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016122188A1 (de) | 2015-11-20 | 2017-05-24 | Varroc Lighting Systems, s.r.o. | Lichtvorrichtung, insbesondere ein Projektorsystem für einen Scheinwerfer für Kraftfahrzeuge |
US9989207B2 (en) | 2015-11-20 | 2018-06-05 | Varroc Lighting Systems, s.r.o. | Light device, especially a projector system of a headlight for motor vehicles |
Also Published As
Publication number | Publication date |
---|---|
EP1033527A3 (de) | 2001-10-24 |
CZ9900704A3 (cs) | 2000-10-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2548150B2 (ja) | 車両用照明装置 | |
JPH0789447B2 (ja) | 自動車のすれ違いビ−ム又は霧灯用投光器 | |
JP2008251243A (ja) | 車輌用前照灯の灯具ユニット | |
JP2003178613A (ja) | 自動車用の楕円タイプの照明装置 | |
JP2001035218A (ja) | 車両用前照灯 | |
US20050063193A1 (en) | Vehicle headlamp | |
JPH0616361B2 (ja) | 楕円面反射器と放物面反射器とを組合わせた自動車用主ビ−ム前照灯 | |
US7891851B2 (en) | Headlamp with long-distance illumination without glaring effect | |
US4268895A (en) | Automotive headlight | |
CN100494771C (zh) | 车辆用灯具 | |
JP2004207245A (ja) | 横方向光源を備えた自動車両用ヘッドライト | |
US20060209556A1 (en) | Vehicle lamp | |
JP4536859B2 (ja) | 車両に用いられるヘッドライト | |
JPS60205901A (ja) | ヘツドライト系 | |
KR20220082495A (ko) | 차량용 슬림형 램프 장치 | |
JP4078116B2 (ja) | バイザ付車両用灯具 | |
JP2591839B2 (ja) | ランプ用反射鏡及びヘッドライトユニット | |
US7753574B2 (en) | Optical module for an elliptical lighting device adapted to a given volume for a motor vehicle | |
EP1033527A2 (de) | Scheinwerfer für Kraftfahrzeuge | |
JP4459095B2 (ja) | 車両用ベンディングランプ | |
KR20060057612A (ko) | 자동차 헤드라이트용 램프 | |
JP2001006408A (ja) | 車両用前照灯 | |
CN214468354U (zh) | 遮光结构、遮光件、车灯模组、车灯和车辆 | |
JP4315342B2 (ja) | 車両用前照灯 | |
KR20130136108A (ko) | 차량용 조명장치 |
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: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
RIC1 | Information provided on ipc code assigned before grant |
Free format text: 7F 21S 8/10 A, 7F 21W 101/10 B, 7F 21W 101:10 Z |
|
AKX | Designation fees paid | ||
REG | Reference to a national code |
Ref country code: DE Ref legal event code: 8566 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20020425 |