Automobile light

专利摘要:
A vehicle headlamp has a reflector provided with a reflective area lying on a surface defined by rotating an ellipse about an axis which passes through the inner focus of the ellipse and which is inclined an acute angle (1 DEG -2 DEG ) to the focal axis of the ellipse. A shielded filament for producing an inclined cut-off line to the beam is used and is orientated in the opposite sense to that in which it is orientated in a conventional headlamp for producing an inclined cut-off. To produce a Z-beam pattern, lensing at the front of the reflector splits the area of the basic beam pattern immediately below a horizontal portion of the cut-off line into parts which define upper and lower, mutually laterally displaced horizontal cut-off portions in the required Z-beam pattern. The lensing also utilizes a part-circular cut-off portion of the basic beam produced by the reflector and bulb to define an inclined portion of the Z-beam and depress and/or shifts other portions of the basic beam to reinforce other portions of the Z-beam. For U.S. lighting regulations, lensing at the front of the reflector has a first region which raises a portion of the beam defining the substantially horizontal portion of the opposite side, inclined cut-off; a second region which laterally shifts larger, substantially horizontal images spaced below the inclined portion of the opposite side-inclined cut-off so as to augment the images raised by the first region; a third region which deviates downwardly and laterally shifts those larger inclined images which are disposed above said larger substantially horizontal images to further augment the images raised by the first region; and a fourth region which spreads smaller images disposed outwardly of said horizontal and inclined larger images and also compresses in height the portion of the basic beam pattern made up of these smaller images.
公开号:SU1326200A3
申请号:SU792772960
申请日:1979-05-23
公开日:1987-07-23
发明作者:Роланд Драйпер Джоффри；Алан Берт Дэвид
申请人:Лукас Индастриз Лимитед (Фирма)；
IPC主号:

专利说明:

1 13
The invention relates to the field of lighting, in particular to automotive headlight designs, creating a Z-shaped passing beam.
The aim of the invention is to improve the light distribution.
FIG. 1 is a schematic representation of a car headlight reflector; in fig. 2 is a frontal image of a car headlight; in FIG. 3 is a schematic representation of a beam emitted by a headlamp without a diffuser; in fig. 4 is a schematic representation of a beam emitted by a headlamp
The car headlight contains a concave reflector 1, on the optical axis of which there is a filament 2 dipped beam with screen 3, having horizontal and inclined portions, and a diffuser 4 with optical elements. The reflecting surface of the reflector is formed by rotating around the YY axis an elliptical generatrix with a focal axis located under yi 0 0 to the YY axis and intersecting it at the focal point A. The dipped-beam filament is located so that its internal portion coincides with point A, and the inclined portion the screen is located relative to the vertical plane of symmetry of the headlight from the side of the direction of movement of vehicles, in the course of propagation of the light beam.

The formation of the light beam of the headlamp is carried out as follows.
The design of the reflector 1 with the specified arrangement of the filament 2 filament, and the screen 3 allows you to create the main beam of the passing beam (Fig. 3). The beam cut is formed by a line consisting of a linear horizontal section 5, inclined upwards linear section 6 and partially circular section 7. At the same time, images 1, Ij, 1 from each elliptical section of reflector 1 have ends corresponding to the inner end of filament 2 and coincide with section 7 of the line cut. The distant parts of the same zone and their lower
The very formation of the light beam is carried out by a diffuser 4 having optical elements, which allow to obtain the desired Z-shape of the light beam shown in FIG. four.
The optical element 8 shifts the light beam passing through it by 0.5 vertically upwards and by 0.5.
the borders coincide with the horizontal plane of symmetry, and the third and fourth elements are located respectively in the peripheral and central parts of the diffuser above the plane passing through the inclined section of the screen, and in contact with it, the first optical element having a wedge angle providing
I
from the optical axis in the horizontal direction, the optical element 9 ensures the deflection of the light beam passing through it by 5 ° from the optical axis in the same direction. Optical elements 10 and 11 are used to deflect the light beams below the horizontal plane of symmetry of the headlamp. The remaining optical elements of the diffuser 4 are made in such a way as to provide the necessary light distribution in the case of using a high-filament filament in the headlamp.
The angle oi varies from 1 to 2 ° depending on the shape and size of the selected reflector. With dy 2, there is a tendency to decrease the intensity of the image, while with d there is scattering of light over the cut.

权利要求:
Claims (1)
[1]
Invention Formula
I
A car headlight containing a concave reflector with a light source mounted on its optical axis with a screen having horizontal and inclined portions, and a diffuser with optical elements, which, in order to improve light distribution, the reflecting surface of the reflector is formed by rotating around the elliptical axis with the focal axis turned at an angle of 1-2 ° to the axis of rotation and intersecting it at the focal point, the inclined section of the screen is located relative to the vertical plane of symmetry of the headlights received from the direction of travel of vehicles along the propagation of light beam, one of the optical elements located on the periphery of the diffuser zone bounded by the horizontal and vertical planes of symmetry with. Stora
corresponding to the horizontal section of the screen, the second is in the central part of the same zone and their lower
the borders coincide with the horizontal plane of symmetry, and the third and fourth elements are located respectively in the peripheral and central parts of the diffuser above the plane passing through the inclined section of the screen, and are in contact with it, while the first optical element has a wedge angle providing
31326200-1
the deviation of the corresponding light-5 from the optical axis in the same vertical direction upwards is equal, and the third and fourth are
0.5 ° th beam
and 0.5 from the optical axis to the horizontal: the n direction, the second - on
Boning below the horizontal plane of the headlamp symmetry.
Boning below the horizontal plane of the headlamp symmetry.
 I r
. 2
Fig.Z
Fi, C
Editor N.Egorova
Compiled by G. Velichkina
TehredV.Kadar Proofreader H, -Core or
Zakae 3130/59 Circulation 465 Subscription
VNIIPI USSR State Committee
for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5
Production and printing company, Uzhgorod, st. Project, 4

类似技术:

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公开号 | 公开日 | 专利标题

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SU1326200A3|1987-07-23|Automobile light

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JPH0789447B2|1995-09-27|Floodlight for car passing beam or fog light

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US4972307A|1990-11-20|Structure of headlamps for vehicles

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US4697225A|1987-09-29|Headlamp, particularly of rectangular configuration, for use as antidazzle lamp on motor vehicles

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US3955077A|1976-05-04|Lamp reflectors and motor vehicle lamp assemblies incorporating same

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US3858040A|1974-12-31|Motor vehicle headlamps

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US3317772A|1967-05-02|Headlight arrangement for automotive vehicles including a reflector and a light shield means

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US1871505A|1932-08-16|Vehicle headlamp

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GB2121947A|1984-01-04|Dipped headlamp for automobiles

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JP2542910B2|1996-10-09|Automotive headlights

同族专利:

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公开号 | 公开日

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FR2426857A1|1979-12-21|

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IT1116211B|1986-02-10|

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JPS597161B2|1984-02-16|

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DE2921068C2|1987-02-12|

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US4305119A|1981-12-08|

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IN151721B|1983-07-16|

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US4246631A|1981-01-20|

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ES251143Y|1981-09-01|

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AU524659B2|1982-09-30|

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IT7949105D0|1979-05-21|

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DE2921068A1|1979-11-29|

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AU4717879A|1979-11-29|

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JPS5524387A|1980-02-21|

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ES251143U|1981-03-16|

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BR7903223A|1979-12-11|

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FR2426857B1|1983-03-11|

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DE4429839B8|1994-08-23|2007-08-02|Automotive Lighting Reutlingen Gmbh|Vehicle headlights|

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FR2822929B1|2001-03-30|2003-12-12|Valeo Vision|REDUCED OVERALL PROJECTOR FOR MOTOR VEHICLE|

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US6746143B1|2003-03-27|2004-06-08|Guide Corporation|Variable progressive beam headlamp|

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JP2006156046A|2004-11-26|2006-06-15|Koito Mfg Co Ltd|Vehicular headlight|

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JP5475395B2|2009-10-23|2014-04-16|スタンレー電気株式会社|Vehicle lighting|

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CN103900013B|2014-04-25|2016-02-10|江苏洪昌科技股份有限公司|The dipped beam optical system of bimodulus group Bright folding formula automobile LED headlamp|

法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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GB2158778|1978-05-23|

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