CN208764859U - Lower beam illumination system - Google Patents

Abstract

The utility model mainly provides a lower beam illumination system, the lower beam illumination system includes an at least dipped headlight light source, at least a dipped headlight reflex reflector and an at least collector lens, the light that wherein the dipped headlight reflex reflector can reflect that the dipped headlight light source issues concurrently is incident upon the collector lens, and the collector lens forms a dipped beam hot spot after being reflected again.

Description

Lower beam illumination system

Technical field

The utility model belongs to vehicle illumination field, and in particular to a kind of illumination system for being capable of providing lower beam illumination System.

Background technique

Headlamp is also headlight, is installed on the both sides of the head of the vehicles such as automobile, is used for night illumination.Due to The illuminating effect of headlamp directly affects the operation and traffic safety of driving at night, therefore countries in the world traffic management department Its lighting criteria is mostly defined with legal form.With the continuous development of technology, that incandescent vacuum lamp of past is successively washed in a pan It eliminates, the headlamp of present automobile is based on halogen lamp, xenon lamp.

The headlamp of the vehicles such as car headlamp has its unique light distribution structure, can also be divided according to luminous type For high beam and dipped headlight.Such as the light that high beam issues is shot forward straight after the reflection of lampshade reflector, it is " remote with formation Light ".The light that dipped headlight issues keeps off the top half to lampshade reflector to barn door, and the light reflected away is all unrestrained downward Directive ground, with formation " dipped beam ", to will not cause to dazzle the eyes to the driver of opposite car.

Headlamp has very strict requirements to the distribution of the illumination of dipped beam, by taking dipped headlight right lateral makes as an example, as Figure 1A, Shown in Figure 1B, according to some photometric standards, when low beam mode is presented in headlamp, on vertical light distribution screen, h-h ' line is below Area pellucida needs to reach certain light intensity, is dark space, vehicle driver's eyes that B50L is 50 meters on opposing lane above the HH of left side Position, it is desirable that be primary illumination zone below the HH of left side in 650cd hereinafter, the excessively high generation of light intensity is avoided to dazzle the eyes.15 ° of right side oblique line, Or broken line HH → HH1 → H1H2 → H2H4 top of 45 ° of oblique lines to horizontal vertical away from 25cm steering horizontal is dark space, under Side is other high lighting area and key lighting area.High lighting area provides right side road illumination and road sign for driver by the right side Illumination, while the largest light intensity requirement of BR point is set again, it avoids the pedestrian close to vehicle from generating and dazzles the eyes caused traffic safety Accident.

Certain brightness requirement is needed in the region Zone III above dead line simultaneously, as shown in Figure 1 C, it is ensured that vehicle There is enough brightness in front upper place, and the pedestrian and opposite vehicle driver of vehicle front know the presence of vehicle, therefore define P1+P2+P3 >=190cd, p4+P5+P6 >=375cd, P7 >=65cd, P8 >=125cd.It cannot make the pedestrian of vehicle front again simultaneously With opposite vehicle glare of driver, cause traffic story, therefore defines P1 to P8 each point maximum value no more than 625cd.

LED itself has the unexistent many advantages of other lighting sources, for example low-voltage, longevity as new type light source Life, small in size, light-weight, response is fast, radiationless, pollution-free and resistance to various mal-conditions, and LED light emission direction is single side Property (conventional light source be all volume 360 °), the advantages that being more advantageous to the Collection utilization of light, improve light utilization efficiency.Therefore with LED is that light source production LED headlamp is also a new trend, but existing LED light flux is not high, must in order to improve luminous flux Electric current must be improved, causes calorific value big, heat dissipating mass is big, reduces the service life.LED low-beam light is using currently on the market, still LED light flux is insufficient, and in order to reach standard, the brightness that intermediate region is done is high, and left and right sides brightness is decreased obviously very much, causes to drive The person's of sailing vision width is narrow.HID headlamp brightness ratio LED headlamp simultaneously currently on the market is bright, and many auto vendors are unwilling Brightness requirement selection LED headlamp is reduced, unless LED headlamp can reach the brightness degree and power consumption of HID headlamp Lower than HID headlamp, be no more than 25W, therefore LED headlamp will substitute HID headlamp completely, it is necessary to from lamp brightness, power, Heat dissipation, LED total light flux and optical system are all optimized, and existing optical system is difficult to meet the requirements again.

As shown in Fig. 2, sun directional light light, after prism reflects, white light is reflected into red, orange, yellow, green, green, Lan He Purple, blue light deviation angle is bigger than yellow light, illustrates that the same medium refraction index of the short correspondence of wavelength is big.It is yellow using sodium for defining refractive index It is calculated based on optical wavelength, since the refractive index that the light of different wave length corresponds to same medium is different, the longer refractive index of wavelength Smaller, wavelength is shorter, and refractive index is bigger.White light LEDs are excited to be mixed into white light by blue light+fluorescent powder at present, mainly by blue light and Huang Light mixing, such as PC Refractive Index of Material: when 1.586, blue light wavelength 470um, refractive index 1.594, therefore use projection-type light System certainly exists excessive Lan Xianxiang.

In order to mitigate excessive Lan Xianxiang in row, a variety of methods are taken, such as: it is beaten on the input optical surface of collector lens Site, mobile collector lens are allowed to defocusing, and reduce the big light distribution etc. of incidence angle.As shown in figure 3, leading currently on the market The headlamp optical texture of stream is using projection type optical system, and LED light source is placed at 8001 focus F1 of ellipsoid structure, Light by ellipsoid 8001 reflection after converge to F2 at, in front of F2 placement collector lens 8003, make by F2 light again The light intensity that convergence makes central area meet laws and regulations prescribed requirement makes the light of projection by placing dead line baffle at F2 The dark space of cut-off wire shaped is formed above spot, thus meet the requirement of test point as defined in laws and regulations, but it is reflective far from LED The incident angle α 1 of the light of face reflection to collector lens 8003 is big, keeps the deviation angle of blue light big, thus the blue light of central area Shared ratio is big, makes can have serious excessive Lan Xianxiang at dead line, and excessive blue area domain is big, and color seriously exceeds method law In region as defined in advising.In order to mitigate excessive Lan Xianxiang, collector lens 8003, micro-shifting moves Hmm outward, and incident light extends to optically focused It is equally α 1 that lens 8003 ', which form incidence angle, but incidence point becomes remote with a distance from collector lens 8003 ', makes light down The blue light ratio of micro-shifting, central area is reduced, to mitigate the excessive Lan Xianxiang in center, but light can be made toward dark space above collector lens Offset causes "cut-off"line to become unintelligible.Another method is reflective by modification ellipsoid, the region for keeping incident angle α 1 big The light of reflective surface is up corrected, and makes 1 jiao of α to become smaller, to mitigate the excessive Lan Xianxiang in center, while passing through 8003 focus of collector lens Light decrease, cause the light intensity of central area to reduce.

Utility model content

One of the utility model is designed to provide a kind of far and near lighting system, and the lower beam illumination system is used for vehicle Illumination, can reach enough light intensity to illuminate the road in front, and will not generate dazzle, so that it is guaranteed that can be effectively and safe Use.

One of the utility model is designed to provide a kind of lower beam illumination system, includes more in the lower beam illumination system A LED's is applied in combination, to improve the total luminous flux of the lower beam illumination system.

One of the utility model is designed to provide a kind of lower beam illumination system, the dipped beam in the lower beam illumination system Lamp reflex reflector is using the good TIR mirror piece of reflecting effect, to improve the light utilization efficiency of the dipped headlight light source and described close The illuminating effect of lighting system.

Another of the utility model is designed to provide a kind of lower beam illumination system, wherein the light in the dipped beam source Can dense convergence, to increase the illumination width and illumination distances of the lower beam illumination system.

Another of the utility model is designed to provide a kind of lower beam illumination system, wherein the dipped beam source is LED, the LED are that white light, warm white and/or golden yellow light are used in mixed way, so that lamps and lanterns colour temperature is reduced, to improve the dipped beam Irradiation distance, road surface clarity and the penetration capacity of lighting system, and protect driver's retina.

Another of the utility model is designed to provide a kind of lower beam illumination system, wherein in the lower beam illumination system The dipped headlight light source be the horizontally arranged multicore LED module of one group of horizontally arranged multicore LED module or multiple groups, or The horizontal linear array mixing of the LED of the horizontal linear array of the LED of person's single or horizontally arranged multicore LED module and single It uses.

Another of the utility model is designed to provide a kind of lower beam illumination system, wherein the lower beam illumination system packet A dead line anti-dazzling screen is included, so that the dipped headlight light source is formed "cut-off"line clearly dipped beam by the dead line anti-dazzling screen Hot spot.

Another of the utility model is designed to provide a kind of lower beam illumination system, wherein the dead line anti-dazzling screen has A windowing slot, windowing slot is interior to place an optical filter, and the part light issued from the dipped headlight light source can pass through the windowing slot Interior optical filter is to weaken and spread, then the dim light spot to form dark space above dead line is reflected through the collector lens, increases The light intensity of P1 to P6, while not increasing the light intensity of P7, P8, B50L and HV point again.

Another of the utility model is designed to provide a kind of lower beam illumination system, the windowing of the dead line anti-dazzling screen The optical system of slot leading portion can collect light source using TIR, be also possible to freshwater mussel shape reflector etc., not by front end optical system type Limitation.

Another of the utility model is designed to provide a kind of lower beam illumination system, the windowing flute profile of dead line anti-dazzling screen Shape can be the shapes such as rectangular, round, oval, be also possible to multiple shapes such as rectangular, round, oval, can also be with It is the shapes such as trade mark and word, is not limited by windowing shape and quantity.

Another of the utility model is designed to provide a kind of lower beam illumination system, the dead line anti-dazzling screen dead line The sawtooth on piece of forming face extends into class triangle, and is made into the laciniation of stretching on surface, reduces to blue at dead line In the case that the ratio of light and the dead line anti-dazzling screen do not do nigrescence or burnt hair processing, repair the light for joining in sawtooth on piece Just, make its reflection, irreflexive light impossible to collector lens, keep "cut-off"line apparent.

Another of the utility model is designed to provide a kind of lower beam illumination system, wherein the collector lens is to eliminate The optical lens for indigo plant phenomenon of overflowing.

Another of the utility model is designed to provide a kind of lower beam illumination system, wherein the input of the collector lens Optical surface is plane or non-planar optical surface, and output upper half optical surface is located above central horizontal axis and is optically focused table Face, output lower half optical surface are located at below central horizontal axis, and are shaped face, non-rotating face.

Another of the utility model is designed to provide a kind of lower beam illumination system, wherein described in the collector lens Lower half optical surface is exported by amendment, the blue light for exporting lower half optical surface is made to be parallel to or be slightly below output upper half optics The blue light of output lower half optical surface is completely covered in the yellow light of the yellow light on surface, output upper half optical surface, exports lower half optics The blue light of output upper half optical surface is completely covered in the yellow light on surface, ultimately forms the hot spot without excessive blue phenomenon at dead line.

Another of the utility model is designed to provide a kind of lower beam illumination system, wherein under collector lens output Half optical surface is amendment curved surface, and can also export upper half optical surface as tru(e)ing face, or both is all the tru(e)ing face.

In order to achieve the above object, the utility model mainly provides a kind of lower beam illumination system, the lower beam illumination system includes An at least dipped headlight light source, at least a dipped headlight reflex reflector and an at least collector lens, wherein the reflective dress of the dipped headlight The light that the dipped headlight light source issues can be reflected by, which setting, is concurrently incident upon the collector lens, after the collector lens is reflected again Form a dipped beam hot spot.

In wherein some embodiments, the lower beam illumination system further comprises a dead line anti-dazzling screen, the cut-off Line anti-dazzling screen is arranged at the focal point of the collector lens, so that the light shield above the dead line be fallen and formed described Dipped beam hot spot.

In wherein some embodiments, wherein the dipped beam source is horizontally arranged using multiple LED.

In wherein some embodiments, wherein the LED is single-chip LED or multicore LED or multicore LED and single-chip LED Mixing.

In wherein some embodiments, wherein the dipped headlight reflex reflector is the combination of TIR mirror piece, the TIR mirror piece Quantity it is identical as the quantity of the LED.

In wherein some embodiments, wherein the dead line anti-dazzling screen includes a sawtooth piece and a windowing slot, the saw Gear piece is arranged in dead line forming face, and the sawtooth piece is class triangle, and the surface of the sawtooth piece is provided with stretching Laciniation, after the windowing slot is arranged at the center of the dead line anti-dazzling screen emit the low beam light source Light can pass through the windowing slot.

In wherein some embodiments, the lower beam illumination system further includes an optical filter, and the optical filter is set to institute It states in windowing slot, so that the light for enabling the linear light sources to issue irradiates again after being weakened and spread by the optical filter To the collector lens.

In wherein some embodiments, wherein the dead line anti-dazzling screen is made of opaque material, the optical filter is Trnaslucent materials, photodiffusion material or white material are made.

In wherein some embodiments, wherein the collector lens is the optical lens that can eliminate blue phenomenon of overflowing, including One input optical surface, an output upper half optical surface and an output lower half optical surface, output upper half optical surface position Above central horizontal axis, the output lower half optical surface is located at below central horizontal axis.

In wherein some embodiments, wherein the input light surface is planar wave surface or non-planar optics table Face, the output upper half optical surface are optically focused surface, and the output lower half optical surface is shaped face or non-rotating face.

In wherein some embodiments, wherein the output lower half optical surface centre section includes n optical curve, often Laterally range is deviateed in the micro- past lower section of several optical surface light is ° -0.05*n ° of 0.05* (n-1) for optical curve.

Detailed description of the invention

Figure 1A, Figure 1B and Fig. 1 C are light distribution requirements figure of the headlamp right travel vehicle on filament shield.

Fig. 2 is that prism light dissipates schematic diagram.

Fig. 3 is that headlamp projection type optical system weakens the blue phenomenon schematic diagram that overflows at dead line.

Fig. 4 is the structural schematic diagram of the first embodiment of lower beam illumination system described in the utility model.

Fig. 5 is the structural schematic diagram of the dead line anti-dazzling screen in the lower beam illumination system in Fig. 4.

Fig. 6 is the output optical surface structure schematic diagram of the collector lens in the lower beam illumination system in Fig. 4.

Fig. 7 is that the collector lens in Fig. 6 eliminates the blue phenomenon optowire schematic diagram that overflows.

Specific embodiment

It is described below for disclosing the utility model so that those skilled in the art can be realized the utility model.It retouches below Preferred embodiment in stating is only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.It is retouched following The basic principle of the utility model defined in stating can be applied to other embodiments, deformation scheme, improvement project, etc. Tongfangs The other technologies scheme of case and the spirit and scope without departing from the utility model.

It will be understood by those skilled in the art that in the exposure of the utility model, term " longitudinal direction ", " transverse direction ", "upper", The orientation of the instructions such as "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" or position are closed System is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, without It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore on Stating term should not be understood as limiting the present invention.

It is understood that term " one " is interpreted as " at least one " or " one or more ", i.e., in one embodiment, The quantity of one element can be one, and in a further embodiment, the quantity of the element can be it is multiple, term " one " is no It can be interpreted as the limitation to quantity.

The utility model mainly provides a kind of lower beam illumination system, and the lower beam illumination system includes a dipped headlight light source 11, a dipped headlight reflex reflector 12 and a collector lens 13, the dipped headlight reflex reflector 12 can reflect the dipped beam The light of the sending of source 11 simultaneously reflexes to the collector lens 13, and the collector lens 13 forms a dipped beam hot spot after being reflected again.

Specifically, in the first embodiment of the utility model, the dipped headlight in the lower beam illumination system is anti- Electro-optical device 12 is TIR mirror piece, is fixedly installed on the front of the dipped headlight light source 11, for issuing to the dipped headlight light source 11 Light reflected, the dipped headlight TIR mirror piece can reflex to the light part that the dipped headlight light source 11 issues described poly- The focal point of optical lens 13.

The lower beam illumination system further comprises a dead line anti-dazzling screen 14, and the dead line anti-dazzling screen 14 is arranged at The focal point of the collector lens 13, the light for will issue from the dipped headlight light source 11 pass through the dead line anti-dazzling screen The dead line anti-dazzling screen 14 falls the light shield being positioned above when 14, and remaining light is rolled over to the collector lens 13 again It penetrates, to form the dipped beam hot spot.Specifically, in the first embodiment of the utility model, the dipped headlight light source 11 is adopted It is horizontally arranged with multiple LED, wherein such as can be five that LED is intermediate 1500Lm, 5700K colour temperature in a specific example Core LED module, each 2 250Lm warm white 3000K colour temperature single ceramic package LED in left and right, positive white light and warm white mixing make With declining the colour temperature of whole lamp, it is apparent and mention to improve penetration capacity and road conditions of the lamps and lanterns at greasy weather and rainy day The total luminous flux of the high dipped headlight light source 11.Preferably, the dipped headlight light source uses 10 LED.

A kind of deformation of the first embodiment as the utility model, wherein the dipped beam source 11 can be one group The multicore LED of horizontal linear array, wherein the LED is that perhaps warm white or white light and warm white are used in mixed way white light, Or white light, warm white and golden yellow light are used in mixed way, so that the colour temperature of the dipped headlight light source 11 is reduced, to improve described close Irradiation distance, road surface clarity and the penetration capacity of lighting system, and protect driver's retina.

As the another kind deformation of the above embodiments of the present invention, wherein the dipped beam source 11 is that multiple groups are horizontal Half group of water of single-chip LED mould group and top left or right of the horizontal linear array of one group of single-chip LED mould group or lower section of linear array The single-chip LED mould group of flat linear array combines the LED light source to be formed, and is suitable for dipped headlight optical system.

Correspondingly, in the above embodiments of the present invention, the dipped headlight reflex reflector 12 is TIR combined lens, Preferably 10 TIR assemblys, the low beam light source 11 for being formed to 10 LED reflect.

As a kind of deformation of the present embodiment, the dipped headlight reflex reflector also be can choose with other kinds of reflective dress It sets, for example rotation freshwater mussel shape reflector etc. solves and this as long as using technical solution identical or approximate with the utility model The identical or approximate technical problem of utility model, and reached technical effect identical or approximate with the utility model, all belong to Within the protection scope of the utility model, specific embodiment of the present utility model is not limited thereto.In the utility model First embodiment in, the dead line forming face shape of the dead line anti-dazzling screen 14 is that 15 ° of oblique lines, 45 ° of oblique lines or 90 ° are straight Angle or 0 ° of horizontal line, the dead line anti-dazzling screen 14 include at least one windowing slot 143 and an at least sawtooth piece 144, wherein The sawtooth piece 144 is located in dead line forming face, and the windowing slot 143 is arranged at the dead line anti-dazzling screen 14 substantially At center, so that the windowing slot 143 can be passed through by being irradiated the light come from the dipped headlight light source 11.The sawtooth piece 144 The laciniation of stretching is provided with for the surface of class triangle, and the sawtooth piece 144, for reducing blue light at dead line Ratio, and in the case where the dead line anti-dazzling screen 14 does not do nigrescence or burnt hair and handles, make to be projected to the sawtooth piece Light amendment on 144, be projected to its reflection, irreflexive light will not again on the collector lens 13, to make to be formed bright Dark dead line is apparent.

Lower beam illumination system described in the utility model further comprises an optical filter 15, and the optical filter 15 is fixedly installed In in the windowing slot 143 of the dead line anti-dazzling screen 14, passed through by the part light of the dead line anti-dazzling screen 14 described The optical filter 15 to open a window in slot 143, to be weakened to light and be diffused on the collector lens 13, using described Collector lens 13 refracts to dark space above dead line and forms one piece of dim light area Zone γ, to enhance the light intensity of P1 to P6, while again The light intensity for not enhancing P7, P8, B50L and HV test point, so that the pedestrian on opposite is seen front vehicles clearly will pass through.End linear The light big through the incidence angle of the collector lens 13 can be shielded at the sawtooth piece 144 on face, to reduce cut-off Blue light ratio at line eliminates the Lan Xianxiang that overflows at dead line.

In the above preferred embodiment of the utility model, the optical filter 15 is made of opaque material, or is half Transparent material is made, and is perhaps made of diffusion material or is made for white material, as long as those skilled in the art use Technical solution identical or approximate with the utility model, solves the technical problem identical or approximate with the utility model, and Technical effect identical or approximate with the utility model is reached, has belonged within the protection scope of the utility model, this is practical The novel optical filter is not limited by material.

In the above-mentioned specific embodiment of the utility model, the shape of the windowing slot 143 is rectangle, the optical filter 15 shape it is consistent with the windowing shape of slot 143 and with 143 dimensional fits of windowing slot, so that the dead line be made to hide Mating plate 14 can be fixed in the windowing slot 143.As a kind of deformation of the utility model, the shape of the windowing slot 143 Shape also can be specifically embodied as the shapes such as rectangular, round, oval, or multiple shapes such as rectangular, round, oval or Its combination of person, the shape of the optical filter 15 also may be implemented as the shapes such as rectangular, round, oval, or more A shapes such as rectangular, round, oval or it is combined or the shapes such as trade mark or text, in other words, the optical filter 15 shape is not limited by the shape and quantity of the windowing slot 15.

In the embodiment of the utility model, the collector lens 13 is the optical lens for eliminating blue phenomenon of overflowing, It include: input optical surface 133, output upper half optical surface 131 and output lower half optical surface 132.It is highly preferred that described poly- The input optical surface 133 of optical lens 13 is plane or non-planar optical surface, and output upper half optical surface 131 is located at center It above trunnion axis and is optically focused surface, output lower half optical surface 132 is located at below central horizontal axis, and is shaped face, non-rotation Turn face.

132 centre section of lower half optical surface that the collector lens 13 exports be divided into several optical curves 1321, 1322,1323 ... 132*, the utility model setup parameter are as follows: the 1321 inclined models in lateral several micro- past lower sections of optical surface light It encloses: 0 ° to 0.05 °, the 1322 inclined ranges in lateral several micro- past lower sections of optical surface light: 0.05 ° to 0.1 °, 1323 lateral several light Learn the inclined range in the micro- past lower section of surface light: 0.1 ° to 0.15 °, the lateral inclined range in the micro- past lower section of several optical surface light of 132*: 0.05 × * ° -0.05 ° to 0.05 × * ° or other parameters.

It is emphasized that the collector lens 13 is as a kind of optical lens for eliminating blue phenomenon of overflowing, the output Lower half optical surface 132 is slightly below the blue light for exporting optical surface 132 and exports upper half optical surface 131 after amendment The blue light of output optical surface 132 is completely covered in the yellow light of yellow light, output upper half optical surface 131, exports optical surface 132 Yellow light the blue light of output upper half optical surface 131 is completely covered, ultimately form at dead line without excessive blue phenomenon hot spot.

In other words, in this embodiment, the output lower half optical surface 132 makes to export lower half by amendment The blue light of optical surface 132 is parallel to or the yellow light of slightly below upper half optical surface 131, exports the Huang of 131 optical surface of upper half The blue light of output lower half optical surface 132 is completely covered in light, and the yellow light of output lower half optical surface 132 is completely covered in output The blue light of half optical surface 131 ultimately forms the hot spot without excessive blue phenomenon at dead line.

It is emphasized that a kind of optical lens for eliminating blue phenomenon of overflowing, the light source are white LED light source, white light LED light source passes through the fluorescent powder being excited by blue light and is mixed into white light, therefore is mainly made of yellow light and blue light.Same optics material Verify answer different wave length optical index be it is different, wavelength is longer, and refractive index is lower, and wavelength is shorter, and refractive index is higher, therefore Through the light L101 ... L102 ... L103 of F1 after inputting optical surface 133, the L101B ... at blue light composition is reflected The angle of the L101Y ... L102Y ... L103Y of L102B ... L103B and yellow component, the bigger blue light offset of incidence angle are bigger, then It is divided into inclined L101B ' ... L102B ' ... L103B ' and directional light down after output upper half optical surface 131 reflects L101Y'… L102Y'…L103Y'；Through the light L201 ... L202 ... L203 of F1 after inputting optical surface 133, folding The L201B ... L202B ... L203B of blue light composition and the L201Y ... L202Y ... L203Y of yellow component are penetrated into, incidence angle is bigger The angle of yellow light offset is bigger, is divided into directional light L201B ' ... L202B ' ... L203B after reflecting using output optical surface 132 It is inclined down ' L201Y ' ... L202Y ' ... L203Y '.Directional light L101Y ' ... L102Y ' ... L103Y ' and directional light L201B ' ... L202B ' ... L203B is mixed to form without the blue phenomenon hot spot that overflows；Inclined L101B ' ... L102B ' ... L103B ' down It is inclined down ' L201Y ' ... L202Y ' ... L203Y ' is mixed to form without the blue phenomenon hot spot that overflows, and makes finally to make light at dead line The Lan Xianxiang that overflows is not present in spot.

Alternatively, the output lower half optical surface 132 is amendment curved surface, can also the output upper half optical surface 131 be amendment curved surface or the output upper half optical surface 131 and the output lower half optical surface 132 is the tru(e)ing face.

In addition, the utility model further comprises a radiator 40, the radiator 40 is preferentially selected as metal material system At to increase the heat dissipation effect of radiator.The dipped headlight light source 11 is fixedly connected with the radiator 40, thus to described The heat that dipped headlight light source 11 generates is distributed.The dipped headlight light source 11 in the lower beam illumination system can directly be consolidated Due to the radiator 40, since the heat transfer speed of the radiator 40 is fast, the setting of the radiator 40 can Avoid the service life reduction caused by temperature rapid increase or heat can not distribute in time due to the dipped headlight light source 11.

Therefore, the working principle of lower beam illumination system described in the utility model are as follows:

The light that the dipped headlight light source 11 issues passes through the dipped headlight reflex reflector 12, i.e., the described TIR assembly it is anti- It is reached after penetrating at the dead line anti-dazzling screen 14, the dead line anti-dazzling screen 14 falls the light shield being positioned above, other portions Light to the collector lens 13 divided is reflected, to form the dipped beam hot spot.In the process, due to the dead line The effect of anti-dazzling screen 14 and the optical filter 15 can reduce the excessive Lan Xianxiang at the dead line and improve the dead line Readability, simultaneously as the collector lens is with the optical lens for eliminating blue effect of overflowing, to make the utility model Hot spot of the light that the lower beam illumination system finally comes out at dead line eliminates excessive Lan Xianxiang.

It should be understood by those skilled in the art that foregoing description and the embodiments of the present invention shown in the drawings are only used as It illustrates and is not intended to limit the utility model.The purpose of this utility model completely and effectively realizes.The function of the utility model Can and structural principle in embodiment show and illustrate, under without departing from the principle, the embodiments of the present invention can To have any deformation or modification.

Claims (10)

1. a kind of lower beam illumination system, which is characterized in that the lower beam illumination system includes at least a dipped headlight light source, at least one Dipped headlight reflex reflector and at least a collector lens, wherein the dipped headlight reflex reflector can reflect the dipped headlight light source The light of sending is concurrently incident upon the collector lens, and the collector lens forms a dipped beam hot spot after being reflected again.

2. lower beam illumination system according to claim 1, the lower beam illumination system further comprises a dead line shading Piece, the dead line anti-dazzling screen are arranged at the focal point of the collector lens, thus by the light shield above the dead line Fall and forms the dipped beam hot spot.

3. lower beam illumination system according to claim 2, wherein the dipped beam source is horizontally arranged using multiple LED.

4. lower beam illumination system according to claim 3, wherein the dipped headlight reflex reflector is the combination of TIR mirror piece, The quantity of the TIR mirror piece is identical as the quantity of the LED.

5. lower beam illumination system according to claim 4, wherein the dead line anti-dazzling screen includes that a sawtooth piece and one is opened Window slot, the sawtooth piece are arranged in dead line forming face, and the sawtooth piece is class triangle, and the surface of the sawtooth piece It is provided with the laciniation of stretching, the windowing slot is arranged at the center of the dead line anti-dazzling screen to make the dipped beam Light after light source transmitting can pass through the windowing slot.

6. lower beam illumination system according to claim 5, the lower beam illumination system further includes an optical filter, the optical filtering Piece is set in the windowing slot, to enable to carry out by the part light of the dead line anti-dazzling screen by the optical filter The collector lens is exposed to after weakening and spreading again.

7. lower beam illumination system according to claim 6, wherein the dead line anti-dazzling screen is made of opaque material, institute Optical filter is stated to be made of trnaslucent materials, photodiffusion material or white material.

8. lower beam illumination system according to claim 7, wherein the collector lens is the light that can eliminate blue phenomenon of overflowing Learn lens, including an input optical surface, an output upper half optical surface and an output lower half optical surface, the output upper half Optical surface is located above central horizontal axis, and the output lower half optical surface is located at below central horizontal axis.

9. lower beam illumination system according to claim 8, wherein the input light surface be planar wave surface or Non-planar optical surface, the output upper half optical surface are optically focused surface, the output lower half optical surface for shaped face or Non-rotating face.

10. lower beam illumination system according to claim 9, wherein the output lower half optical surface centre section includes n Optical curve, laterally range is deviateed in the micro- past lower section of several optical surface light to every optical curve is 0.05* (n-1) ° -0.05* n°。