SE447016B - Halvljusstralkastare for motorfordon - Google Patents

Halvljusstralkastare for motorfordon

Info

Publication number
SE447016B
SE447016B SE8405622A SE8405622A SE447016B SE 447016 B SE447016 B SE 447016B SE 8405622 A SE8405622 A SE 8405622A SE 8405622 A SE8405622 A SE 8405622A SE 447016 B SE447016 B SE 447016B
Authority
SE
Sweden
Prior art keywords
focal point
lens
axis
light
vertical
Prior art date
Application number
SE8405622A
Other languages
English (en)
Other versions
SE8405622L (sv
SE8405622D0 (sv
Inventor
H Kretschmer
G Lindae
P Perthus
Original Assignee
Bosch Gmbh Robert
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 Bosch Gmbh Robert filed Critical Bosch Gmbh Robert
Publication of SE8405622D0 publication Critical patent/SE8405622D0/sv
Publication of SE8405622L publication Critical patent/SE8405622L/sv
Publication of SE447016B publication Critical patent/SE447016B/sv

Links

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
    • 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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • 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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/162—Incandescent light sources, e.g. filament or halogen lamps
    • 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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/162—Incandescent light sources, e.g. filament or halogen lamps
    • F21S41/166—Incandescent light sources, e.g. filament or halogen lamps characterised by the shape of the filament
    • 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
    • F21S41/25—Projection lenses
    • 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
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • 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
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
    • 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
    • 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
    • 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
    • F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
    • 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
    • F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
    • F21S41/692—Shields, i.e. screens not creating an image meant to be projected
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F21W2102/135—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
    • F21W2102/155—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having inclined and horizontal cutoff lines

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

lå UI 30 447 016 Fördelaktíga vidareutvecklingar av uppfinningen anges i under- kraven. Enligt krav 2 kommer halvljusknippet att ges förstärkt solfjäderform i sidled (spridning, sidospridning). Enligt krav 3 uppnås att objektivet omfattar hela råljusknippet.
Genom den gemensamma förskjutningen av bländaren och objekti- vet enligt krav 4 förkortas för det första byggnadsdjupet, dvs. den systembetingade bygglängden längs X-axeln. högst avsevärt och för det andra förflyttas objektivet närmare ljus- källan (glödkroppen). varigenom - vid samma diameter hos objektivet - den vinkelmässiga sidobelysningen blir ytter- ligare förbättrad. Ovannämnda fördelar uppnås speciellt vid användning av en axiell glödkropp och dess arrangemang enligt krav 5.
Ett utföringsexempel av uppfinningen beskrivs nedan närmare under hänvisning till åtföljande ritning. där fig. l schema- tiskt och ej mâttriktigt visar ett vertikalsnitt genom en halvljusstrålkastare för motorfordon och fíg. 2 visar det på en mätskärm avbildade râljusknippet.
Beskrivning av utföringsexemplet.
En halvljusstrâlkastare för motorfordon enligt fig. l har en reflektor l0. vars horisontella meridian utgör del av en ellips med stor brännvidd och vars vertikala meridian 12 utgör del av en ellips 13 med mindre brännvidd och har en inre brännpunkt 14 och en yttre brännpunkt 15. Båda brännpunkterna 14. 15 ligger på den optiska axeln 16 (reflektoraxeln. system- axeln). 1 vilken de horisontella och vertikala meridianerna ll. 12 skär varandra.
En glödkropp 17 är utformad som axiell lindning (långsträckt lindning). vars tyngdpunkt är anordnad efter den inre bränn- punkten 14 i de reflekterade strålarnas riktning 19. Glöd- kroppsaxeln 18 ligger härvid parallellt med den optiska axeln 16 och en bländare 20 med optiskt verksam kant 21 är anordnad under brännpunkten l5 och före denna i strâlriktningen 19 så.
POOR QUALITY I: Lil 447 016 att det bildas ett râljusknippe med ljus/mörkergränsen enligt tig. 2.
Ett objektiv 22 är utfört rotationssymmetriskt med rotations- axeln 23. vilken ligger under och parallellt med den optiska axeln 16. Avståndet mellan objektivet 22 och bländaren 20 bestämmes av den erforderliga skärpan (oskärpan) hos halvljus~ knippet, vilket objektivet 22 formar ur råljusknippet.
Fig. 2 visar en del av en för besiktningsmätning utnyttjad mätskärm 24 med det av objektivet 22 formade halvljusknippet 25. i vilket isoluxlinjer 26 (linjer för samma belysninqs- intensitet) är inritade. Den medelst blândaren 20 avskärmade delen av de reflekterade ljusstrâlarna betecknas 20' och bländarens 20 kant 21 bildar halvljusknippets 25 ljuslmörker- gräns 2l'. Med VV betecknas vertikalplanet och med HH horisontalplanet. i förhållandet till vilket ljusknippet 25 skall inställas. För att uppnå den visade inställningen måste bl.a. den optiska axeln 16 luta nedåt till det nya läget l6'.
PÖOR QUALITY

Claims (5)

10 20 30 447 016 Patentkrav
1. l. Halvljusstrâlkastare för motorfordon med dels en reflektor (10), vars vertikala meridian (12) utgör del av en ellips och ”vars åtminstone huvudsakligen horisontella meridian utgör del av en kä9el$flIfihnNH, dels en glödkropp (17) anordnad inom området för den vertikala meridianens inre brännpunkt (14), dels en bländare (20) med en optiskt verksam kant (21). vilken formar râljusknippet med ljus/mörkergräns (2l'), samt dels ett objektiv (22). vilket är anordnat i råljusknippets strålgång och formar halvljusknippet (25), k ä n n e t e c k n a d av att glödkroppen (17) ligger ovanför den vertikala meridianens (12) inre brânnpunkt (14). att bländarens (20) kant (21) är anordnad i området under den vertikala ellipsens (13) yttre brännpunkt (15). och att objektivet (22) har rotationssymmet- risk grundform.
2. Strålkastare enligt krav 1. k ä n n e t e c k n a d av att glödkroppen (17) med sin tyngdpunkt ligger i strâlriktningen (19) utanför den vertikala meridianens (12) inre brännpunkt (14).
3. Strålkastare enligt krav l eller 2. k ä n n e t e c k - n a d av att objektivets (22) rotatíonsaxel (23) är anordnad under och parallellt med strâlkastarens optiska axel (16).
4. Strålkastare enligt något av krav l-3, k ä n n e t e c k - n a d av att blândaren (20) med sin optiskt verksamma kant (21) är anordnad 1 strålriktningen (19) innanför den yttre brânnpunkten (15).
5. Strålkastare enligt något av krav 1-4. k ä n n e t e c k - n a d av att glödkroppen (17) är utformad som axiell lindning (långsträckt lindning) och att dess axel (18) är anordnad parallell med den optiska axeln (16) hos reflektorn (10) respektive strålkastaren. _ « - _ w fw FY”. 4"? _ _ nä? f". * 7- -' i)
SE8405622A 1983-11-11 1984-11-09 Halvljusstralkastare for motorfordon SE447016B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833340796 DE3340796A1 (de) 1983-11-11 1983-11-11 Abblendlicht-scheinwerfer fuer kraftfahrzeuge

Publications (3)

Publication Number Publication Date
SE8405622D0 SE8405622D0 (sv) 1984-11-09
SE8405622L SE8405622L (sv) 1985-05-12
SE447016B true SE447016B (sv) 1986-10-20

Family

ID=6214051

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8405622A SE447016B (sv) 1983-11-11 1984-11-09 Halvljusstralkastare for motorfordon

Country Status (5)

Country Link
JP (1) JPH063681B2 (sv)
DE (1) DE3340796A1 (sv)
GB (1) GB2149489B (sv)
IT (1) IT1178633B (sv)
SE (1) SE447016B (sv)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566878B1 (fr) * 1984-06-27 1986-07-18 Cibie Projecteurs Perfectionnements aux projecteurs automobiles emettant un faisceau coupe, notamment un faisceau de croisement
US4825343A (en) * 1985-12-27 1989-04-25 Ichikoh Industries Limited Projector type headlamp for vehicles
JPH0789445B2 (ja) * 1986-02-10 1995-09-27 市光工業株式会社 プロジエクタ型の前照灯
DE3620789C2 (de) * 1986-06-20 1993-12-23 Bosch Gmbh Robert Abgeblendeter Kraftfahrzeugscheinwerfer
ES2021107B3 (es) * 1987-03-11 1991-10-16 Eastman Kodak Company (A New Jersey Corporation) Faro de vehiculos y metodo de producir un sistema efectivo opticamente del mismo
JPH0514404Y2 (sv) * 1988-09-27 1993-04-16
CN102089854B (zh) * 2008-07-07 2014-06-25 皇家飞利浦电子股份有限公司 灯

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB178388A (en) * 1921-01-04 1922-04-04 Duncan James Ritchie Improvements in headlamps for automobiles
GB340904A (en) * 1930-04-14 1931-01-08 Mary Emeline Blackwood Improved means for preventing head light dazzle of motor road vehicles
GB441527A (en) * 1935-06-04 1936-01-21 John Day An improved vehicle head-lamp
GB1141984A (en) * 1966-02-11 1969-02-05 Claudine Marie Madeleine Wyss Motor vehicle headlights having single filament bulbs
DE2125646A1 (de) * 1971-05-24 1972-12-14 Freitag J Kraftfahrzeugscheinwerfer
JPS5149584A (sv) * 1975-07-07 1976-04-28 Tokyo Shibaura Electric Co
FR2509427A1 (fr) * 1981-07-10 1983-01-14 Cibie Projecteurs Projecteur de croisement a reflecteur asymetrique
JPS58103701A (ja) * 1981-12-08 1983-06-20 ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング 自動車用ヘツドライト
DE3226580A1 (de) * 1981-12-08 1983-06-16 Robert Bosch Gmbh, 7000 Stuttgart Scheinwerfer fuer kraftfahrzeuge
FR2523267A1 (fr) * 1982-03-15 1983-09-16 Laribe Armand Perfectionnements apportes aux projecteurs lumineux pour vehicules notamment automobiles

Also Published As

Publication number Publication date
SE8405622L (sv) 1985-05-12
IT1178633B (it) 1987-09-09
JPH063681B2 (ja) 1994-01-12
JPS60119001A (ja) 1985-06-26
IT8423494A0 (it) 1984-11-08
GB2149489A (en) 1985-06-12
GB8426250D0 (en) 1984-11-21
DE3340796C2 (sv) 1992-09-10
GB2149489B (en) 1987-07-08
SE8405622D0 (sv) 1984-11-09
DE3340796A1 (de) 1985-05-23

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