CN102367939A - Reflection type automobile LED (light emitting diode) head lamp passing beam optical system - Google Patents
Reflection type automobile LED (light emitting diode) head lamp passing beam optical system Download PDFInfo
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- CN102367939A CN102367939A CN2011104031414A CN201110403141A CN102367939A CN 102367939 A CN102367939 A CN 102367939A CN 2011104031414 A CN2011104031414 A CN 2011104031414A CN 201110403141 A CN201110403141 A CN 201110403141A CN 102367939 A CN102367939 A CN 102367939A
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Abstract
The invention discloses a reflection type automobile LED (light emitting diode) head lamp passing beam optical system. The optical system comprises a white light LED module (1), a non-spherical surface paraboloid alignment reflector (2), a second paraboloid reflector (3), a diaphragm plate (4) and a light-projection lens (5). The optical system is characterized in that the light sent by the LED module (1) light source passes through a first focal point of the non-spherical surface paraboloid alignment reflector (2), and then passes the second paraboloid reflector (3); then the main light ray of the light beam is reflected 45 degrees so as to form a second focal point; the diaphragm plate (4) is positioned at the second focal point; a front focal point of the light-projection lens (5) and a focal point of the second paraboloid reflector (3) are coincided or a little defocused; and the light beam is projected by the light-projection lens (5) so as to achieve lighting, thereby forming an LED automobile head lamp passing lamp lighting system. The optical system disclosed by the invention can emit a lighting light beam which fully meets the relative head lamp passing beam standards at home and abroad, and provides enough pavement illumination and better avoids the influence of glare on drivers of vehicles on different driveways; the LED light source (module) with the energy consumption of 5-15W is used to replace a passing beam system based on traditional 55W and more than 55W light sources such as a tungsten halide lamp and a xenon lamp; and lighting effect which is superior to that of a traditional head lighting passing beam optical system is realized.
Description
Technical field
The invention belongs to optical technical field, be specifically related to that a kind of what road lighting is provided to automobile driver is the dipped beam optical system of the car headlamp of light source based on LED.
Background technology
The dim head lights system that the current mobility car uses can provide road lighting as automobile driver.According to domestic and international headlamp standard; The dipped beam system should cause under the situation of dazzle the road opposite driver that sends a car avoiding; Provide the road lighting of enough horizontal widths to illuminate adjacent lane, and can throw light on simultaneously the track at a distance, judge that to the driver road surface situation provides convenience.
The car light standard GB4599-2007 " car headlamp is joined performance " that China adopted is the relevant laws and regulations " E/ECE/324 Addendum 1:Regulations No.1 and No.2 " with reference to Economic Commission for Europe.According to the GB standard, automotive headlight dipped beam system need be in car light the place ahead 25 meters form a horizontal extension and reach 7920mm, extends perpendicular reaches the rectangular light spot of 1250mm; Simultaneously, at the right half part of hot spot, on the rectangular light spot basis, superposeed from the horizontal by 15 ° rectangular light spot.The upper edge of whole hot spot will form a dead line clearly on test screen, i.e. the left-half level of dead line, and right half part is from the horizontal by 15 °; Simultaneously, should there be a suitable clear zone particular point illumination below, the turning point of dead line.
Existing car headlamp dipped beam system mainly with halogen tungsten lamp and xenon lamp as light source; The optical system that adopts comprises quadratic surface reflector-baffle plate-lens combination and free-form surface reflector; Have following problem: 1. use halogen tungsten lamp as light source, to produce the illumination that meets the demands, its power requirement is very high; And the employed halogen tungsten lamp of car light has strict light source standard and classification, thereby the operating cost of system is very high; 2. head lamp system need be at the long-play at night, and the life-span of halogen tungsten lamp is shorter relatively, thereby needs airport frequent change bulb, and maintenance cost is also higher; 3. no matter be to adopt quadratic surface reflector-baffle plate-lens combination or employing free-form surface reflector, the light of light source outgoing all has quite a few by baffle plate or aluminium sunshade retaining and absorption, and whole optical system efficiency is very limited; 4. the hot spot dead line that adopts free-form surface reflector to realize is clear inadequately usually, has the hot spot burr.
Summary of the invention
To above-mentioned defective; The object of the present invention is to provide a kind of formula automobile LED dim head lights optical system of turning back; Being to use single or many high power white light LED modules as light source, through the parabolic collimating reflectors of aspheric surface, second paraboloid, is the central horizontal edge of a knife and the oblique edge of a knife aperture plate of 15 degree with the optical axis; The light projector lens are realized the illumination of car headlamp dipped headlights.
The formula automobile LED dim head lights optical system of turning back provided by the invention; Comprise white light LEDs module, the parabolic collimating reflectors of aspheric surface, second paraboloid, aperture plate and light projector lens composition; White light LEDs die set light source geometric center places first along of the parabolic collimating reflectors of aspheric surface, and second paraboloid is positioned at the below of the parabolic collimating reflectors of aspheric surface, and the place ahead of second paraboloid is provided with the light projector lens; Aperture plate is positioned near the front focus of light projector lens; It is characterized in that: light that said LED die set light source sends is through first along of the parabolic collimating reflectors of aspheric surface, again through second paraboloid, light beam chief ray 45 degree of turning back formed second focus; Place aperture plate at second Jiao Chu; The front focus of light projector lens overlaps or a little out of focus with the second paraboloid focus, and light beam is gone out illumination through the light projector lens projects, forms LED car headlamp dipped headlights illuminator.
Described white light LEDs module is the 10W white light LEDs of single encapsulation of high-power multicore sheet, or adopts the light source module of many white light LED array, light source power size 5-15W, and the light-emitting area normal of white LED light source module is perpendicular to the first paraboloid symmetry axis.
The length of the parabolic collimating reflectors of described aspheric surface is 20-100 mm, and bore is half bore of 30-150mm, and first focal length is 5-50mm, and inner surface adopts high reflectance minute surface plated film, and reflectivity reaches more than 95%.
Described second paraboloid is 45 degree turn back off axis paraboloid mirror reflector or total reflection prisms; Its 45 degree off axis paraboloid mirror reflector symmetry axis of turning back is parallel to the parabolic collimating reflectors symmetry axis of aspheric surface; Its length is 20-100 mm, and bore is 50-300 mm, and focal length is 18-105 mm.
The front focus of described light projector lens is out of focus 7mm near the second paraboloid focus and forward; The plane of incidence of prism with turn back a little; And the optical axis coincidence of light projector lens, the relative aperture of the relative aperture of light projector lens and the second paraboloid outgoing beam is suitable.
Described aperture plate is to be the horizontal edge of a knife at center and the aperture plate of the oblique edge of a knife of 15 degree with the optical axis.
The present invention; Can send and satisfy the illuminating bundle of relevant dim head lights standard both at home and abroad fully; And enough road illuminations are provided and avoid the influence of dazzle for heteropleural track vehicle driver preferably, disturb and help the motor vehicle driving person in time to see (or front) pavement behavior in the place ahead clearly to get rid of driving.Reduced the energy consumption of system, the hot spot that system is sent meet the demands through optical design, and improve its utilization rate to luminous energy.Only realize alternative for based on the dipped beam system of traditional 55W and above light source halogen tungsten lamp and xenon lamp, and the illuminating effect of realizing more is superior to traditional headlight dipped beam optical system with the led light source (group) of energy consumption 5-15W.
Description of drawings
Fig. 1 be the present invention through parabolic collimation, the structural representation of the dipped beam optical system that focuses on through off axis paraboloid mirror again.
Fig. 2 is that the present invention assembles through ellipsoid, the structural representation of the dipped beam optical system of turning back through the plane again.
Fig. 3 be the present invention through parabolic collimation, the index path of the dipped beam optical system that focuses on through off axis paraboloid mirror again.
Fig. 4 is that the present invention assembles through ellipsoid, the index path of the dipped beam optical system of turning back through the plane again.
Fig. 5 is the 25m optic test screen sketch map at a distance of dipped beam system of the car headlamp of GB GB4599-2007 " car headlamp is joined performance " regulation.
Fig. 6 corresponds respectively to the illumination plane distribution tonsure figure that Fig. 1 and Fig. 2 form on test panel based on the dipped beam optical system of the car headlamp of led light source.
Among the figure: 1.LED light source, the 2. parabolic collimating reflectors of aspheric surface, 3. second paraboloid, 4. aperture plate, 5. light projector lens.
The specific embodiment
The formula of turning back automobile LED dim head lights optical system; Comprise that the parabolic collimating reflectors of white light LEDs module 1, aspheric surface 2, second paraboloid 3, aperture plate 4 and light projector lens 5 form; White LED light source 1 geometric center places first along of the parabolic collimating reflectors 2 of aspheric surface, and second paraboloid 3 is positioned at the below of the parabolic collimating reflectors 2 of aspheric surface, and the place ahead of second paraboloid 3 is provided with light projector lens 5; Aperture plate 4 is positioned near the front focus of light projector lens 5; Light that white light LEDs module 1 light source sends is through first along of the parabolic collimating reflectors 2 of aspheric surface, again through second paraboloid 3, light beam chief ray 45 degree of turning back formed second focus; Place aperture plate 4 at second Jiao Chu; The front focus of light projector lens 5 overlaps or a little out of focus with second paraboloid, 3 focuses, and light beam is gone out illumination through the light projector lens projects, forms LED car headlamp dipped headlights illuminator.
Embodiment 1:
Like Fig. 1, shown in Figure 2, be the present invention through parabolic collimation, the structural representation of the dipped beam optical system that focuses on through half paraboloid again; The 10W white light LEDs 1 that adopts single encapsulation of high-power multicore sheet is as light source, model C REE XML; 45 degree off axis paraboloid mirror reflector 2 length of turning back are 45mm, and bore is the half the of 60mm, and focal length is 5mm; It is that length is 50mm that light beam gets into bore, and bore is 204mm, and focal length is 52mm's; The paraboloidal some of second paraboloid is 45 and spends the off axis paraboloid mirror reflector of turning back, and places aperture plate 4 in the along of this off axis paraboloid mirror; The bore of light projector lens 5 is 80mm; Radius of curvature is 45mm, and front focus is 67mm, and the front focus of light projector lens 5 is turned back near off axis paraboloid mirror reflector 2 focuses and out of focus 5-10mm forward at 45 degree; The 45 degree off axis paraboloid mirror reflector 4 bore directions of turning back are turned back a little with the aperture plate 4 that with the optical axis is the central horizontal edge of a knife and the oblique edge of a knife of 15 degree, and with the optical axis coincidence of light projector lens 5.
Embodiment 2:
Like Fig. 3, shown in Figure 4, be that the present invention assembles through ellipsoid, the structural representation of the dipped beam optical system of turning back through the plane again; The 10W white light LEDs that adopts single encapsulation of high-power multicore sheet is as light source, model C REE XML; The parabolic collimating reflectors 2 of aspheric surface adopts ellipsoidal reflector, and its length is 60mm, and bore is the half the of 60mm; First focal length is 8mm, and second focal length is 112mm, and it is that length is 61.8mm that light beam gets into bore; The length of side is the total reflection prism at 30.9mm isosceles right angle, the 45 degree total reflections light beams of turning back, and second along after light beam is turned back is placed aperture plate 4; The bore of light projector lens is 80mm; Radius of curvature is 50mm, and front focus is 80mm, and the front focus of light projector lens is out of focus 7mm near the total reflection prism focus and forward; The plane of incidence of prism is turned back a little with the aperture plate 4 that with the optical axis is the central horizontal edge of a knife and the oblique edge of a knife of 15 degree, and with the optical axis coincidence of light projector lens 5.
By shown in Figure 5, be the 25m optic test screen sketch map at a distance of dipped beam system of the car headlamp of GB GB4599-2007 " car headlamp is joined performance " regulation; The dipped beam optical system light source led of the automobile LED headlamp that embodiment 1 or 2 is combined is lighted; Observe illuminance at 25m test panel far away and distribute, and do fine setting, to satisfy the requirement of car headlamp lower beam illumination; The illumination of 75R and 50R can reach lx, and other key point also meets the demands.
Being known by Fig. 6, is to correspond respectively to the illumination plane distribution tonsure figure that the dipped beam optical system based on the car headlamp of led light source of Fig. 1 and Fig. 3 forms on test panel.
The present invention has following characteristics:
With LED as light source, power is little, system energy consumption is little, the life-span is long;
2. structure as shown in Figure 1 is utilized two paraboloidal combinations; Through the collimation of led light source with assemble the light beam obtain suitable beam size again; Form the vehicle LED dipped headlight illuminating bundle with the coupling of the relative aperture of light projector light projector lens, the luminous flux utilization rate is high, and whole lamp energy consumption is little;
3. structure as shown in Figure 3 is utilized the combination of ellipsoid and plane reflection; The led light source that is positioned at ellipsoid first along converges to the light beam that second along forms suitable beam size; Form the vehicle LED dipped headlight illuminating bundle with the coupling of the relative aperture of light projector light projector lens; The luminous flux utilization rate is high, and whole lamp energy consumption is little;
4, the automobile LED head lamp structure of two kinds of similar structures is compact, and installation and maintenance is convenient;
5. can adopt high-power single multicore sheet encapsulated LED light source, only the LED of a 10W just can realize given Illumination Distribution and illumination requirement on the target illumination face, thereby can substitute the conventional light source halogen tungsten lamp and the xenon lamp of high energy consumption.
Claims (6)
1. the formula of turning back automobile LED dim head lights optical system; Comprise white light LEDs module (1), the parabolic collimating reflectors (2) of aspheric surface, second paraboloid (3), aperture plate (4) and light projector lens (5) composition; The light source geometric center of white light LEDs module (1) places first along of the parabolic collimating reflectors of aspheric surface (2); Second paraboloid (3) is positioned at the below of the parabolic collimating reflectors of aspheric surface (2); The place ahead of second paraboloid (3) is provided with light projector lens (5), and aperture plate (4) is positioned near the front focus of light projector lens (5), it is characterized in that: the light that said LED module (1) light source sends is through first along of the parabolic collimating reflectors of aspheric surface (2); Again through second paraboloid (3); Light beam chief ray 45 degree of turning back are formed second focus, place aperture plate (4) at second Jiao Chu, the front focus of light projector lens (5) overlaps or a little out of focus with second paraboloid (3) focus; Light beam throws away illumination through light projector lens (5), forms LED car headlamp dipped headlights illuminator.
2. the formula automobile LED dim head lights optical system of turning back according to claim 1; It is characterized in that: described white light LEDs module (1) is the 10W white light LEDs of single encapsulation of high-power multicore sheet; Or adopt the module of many white light LED array; Light source power size 5-15W, the light-emitting area normal of white LED light source module is perpendicular to parabolic collimating reflectors (2) symmetry axis of aspheric surface.
3. the formula automobile LED dim head lights optical system of turning back according to claim 1; It is characterized in that: the length of described aspheric surface paraboloid (2) is 20-100 mm; Bore is half bore of 30-150mm; First focal length is 5-50mm, and inner surface adopts high reflectance minute surface plated film, and reflectivity reaches more than 95%.
4. the formula automobile LED dim head lights optical system of turning back according to claim 1; It is characterized in that: described second paraboloid (3) is 45 degree turn back off axis paraboloid mirror reflector or total reflection prisms; Its 45 degree off axis paraboloid mirror reflector symmetry axis of turning back is parallel to parabolic collimating reflectors (2) symmetry axis of aspheric surface; Its length is 20-100 mm, and bore is 50-300 mm, and focal length is 18-105 mm.
5. the formula automobile LED dim head lights optical system of turning back according to claim 1; It is characterized in that: the front focus of described light projector lens (5) is out of focus 7mm near second paraboloid (3) focus and forward; The plane of incidence of prism with turn back a little; And the optical axis coincidence of light projector lens (5), the relative aperture of the relative aperture of light projector lens (5) and second paraboloid (3) outgoing beam is suitable.
6. the formula automobile LED dim head lights optical system of turning back according to claim 1 is characterized in that: described aperture plate (4) is to be the horizontal edge of a knife and the oblique edge of a knife aperture plate of 15 degree at center with the optical axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110403141 CN102367939B (en) | 2011-12-07 | 2011-12-07 | Reflection type automobile LED (light emitting diode) head lamp passing beam optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110403141 CN102367939B (en) | 2011-12-07 | 2011-12-07 | Reflection type automobile LED (light emitting diode) head lamp passing beam optical system |
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| Publication Number | Publication Date |
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| CN102367939A true CN102367939A (en) | 2012-03-07 |
| CN102367939B CN102367939B (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110403141 Expired - Fee Related CN102367939B (en) | 2011-12-07 | 2011-12-07 | Reflection type automobile LED (light emitting diode) head lamp passing beam optical system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016096234A1 (en) * | 2014-12-19 | 2016-06-23 | Osram Gmbh | Lighting system |
| TWI573952B (en) * | 2014-05-16 | 2017-03-11 | 王正 | Multi lighting source vehicle lamp |
| CN110107857A (en) * | 2019-06-04 | 2019-08-09 | 华域视觉科技(上海)有限公司 | The area dipped beam III illumination module, vehicle head lamp and vehicle |
| CN113167453A (en) * | 2018-12-20 | 2021-07-23 | 法雷奥照明公司 | Optical system for a headlamp |
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| US20050111235A1 (en) * | 2003-11-21 | 2005-05-26 | Nobuyuki Suzuki | Vehicle lamp and method of use |
| CN101097052A (en) * | 2006-06-27 | 2008-01-02 | 财团法人工业技术研究院 | Illuminating apparatus and composite structure thereof |
| JP2008171604A (en) * | 2007-01-10 | 2008-07-24 | Toyoda Gosei Co Ltd | Rear combination lamp |
| CN201706353U (en) * | 2010-05-28 | 2011-01-12 | 帝宝工业股份有限公司 | Vehicle optical module |
| CN102095151A (en) * | 2011-01-20 | 2011-06-15 | 华南理工大学 | LED (light-emitting diode) automobile high beam light with mixed light distribution system |
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2011
- 2011-12-07 CN CN 201110403141 patent/CN102367939B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20050111235A1 (en) * | 2003-11-21 | 2005-05-26 | Nobuyuki Suzuki | Vehicle lamp and method of use |
| CN101097052A (en) * | 2006-06-27 | 2008-01-02 | 财团法人工业技术研究院 | Illuminating apparatus and composite structure thereof |
| JP2008171604A (en) * | 2007-01-10 | 2008-07-24 | Toyoda Gosei Co Ltd | Rear combination lamp |
| CN201706353U (en) * | 2010-05-28 | 2011-01-12 | 帝宝工业股份有限公司 | Vehicle optical module |
| CN102095151A (en) * | 2011-01-20 | 2011-06-15 | 华南理工大学 | LED (light-emitting diode) automobile high beam light with mixed light distribution system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI573952B (en) * | 2014-05-16 | 2017-03-11 | 王正 | Multi lighting source vehicle lamp |
| WO2016096234A1 (en) * | 2014-12-19 | 2016-06-23 | Osram Gmbh | Lighting system |
| CN113167453A (en) * | 2018-12-20 | 2021-07-23 | 法雷奥照明公司 | Optical system for a headlamp |
| CN113167453B (en) * | 2018-12-20 | 2023-11-14 | 法雷奥照明公司 | Optical system for a headlight |
| CN110107857A (en) * | 2019-06-04 | 2019-08-09 | 华域视觉科技(上海)有限公司 | The area dipped beam III illumination module, vehicle head lamp and vehicle |
| WO2020244109A1 (en) * | 2019-06-04 | 2020-12-10 | 华域视觉科技(上海)有限公司 | Low-beam zone iii lighting module, vehicle headlamp and vehicle |
| US11608956B2 (en) | 2019-06-04 | 2023-03-21 | Hasco Vision Technology Co., Ltd. | Low-beam zone III lighting module, vehicle headlamp and vehicle |
| CN110107857B (en) * | 2019-06-04 | 2024-04-12 | 华域视觉科技(上海)有限公司 | Near light III district lighting module, vehicle head-light and vehicle |
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| CN102367939B (en) | 2013-10-30 |
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