CN109973931A - A kind of car light lower beam illumination dichroic reflection device, Optical devices and vehicle front lighting lamp assembly - Google Patents

A kind of car light lower beam illumination dichroic reflection device, Optical devices and vehicle front lighting lamp assembly Download PDF

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Publication number
CN109973931A
CN109973931A CN201910380092.3A CN201910380092A CN109973931A CN 109973931 A CN109973931 A CN 109973931A CN 201910380092 A CN201910380092 A CN 201910380092A CN 109973931 A CN109973931 A CN 109973931A
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CN
China
Prior art keywords
light
reflection device
dichroic reflection
lower beam
beam illumination
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Granted
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CN201910380092.3A
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Chinese (zh)
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CN109973931B (en
Inventor
周礼书
霍永峰
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Chengdu Heng Kun Electro-Optical Technology Inc (us) 62 Martin Road Concord Massachusetts 017
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Chengdu Heng Kun Electro-Optical Technology Inc (us) 62 Martin Road Concord Massachusetts 017
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Priority to CN201910380092.3A priority Critical patent/CN109973931B/en
Publication of CN109973931A publication Critical patent/CN109973931A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32Optical layout thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21WINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10Arrangement or contour of the emitted light
    • F21W2102/13Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F21W2102/135Arrangement 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
    • F21W2102/155Arrangement 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

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

Abstract

The invention discloses a kind of car light lower beam illumination dichroic reflection device, plane of light incidence, light reflecting surface and beam projecting face are provided on the dichroic reflection device;Light is refracted into dichroic reflection device by plane of light incidence, and then light reflects in dichroic reflection device through light reflecting surface, and last light reflects dichroic reflection device by beam projecting face;Make light after projection lens projects, projects in lower beam illumination field.The present invention is for existing for existing car light, the problem that illumination region Illumination Distribution causes the efficiency of light energy utilization not high is controlled by light barrier mode, and cause car light to fabricate the big problem of difficulty by doing micro-structure processing on projection lens, design a kind of structure that can replace traditional car light.The Vehicle lamp structure introduces corresponding dichroic reflection device, is not only able to improve the efficiency of light energy utilization of vehicle lamp light source, also adds the design freedom of car light, can neatly control the projection distribution of illuminating ray, be conducive to the requirement for meeting lower beam illumination.

Description

A kind of car light lower beam illumination dichroic reflection device, Optical devices and vehicle front lighting lamp assembly
Technical field
The present invention relates to vehicle light illumination technical fields.It is anti-in particular it relates to a kind of light splitting applied to car light lower beam illumination Emitter, based on the Optical devices of the dichroic reflection device, and the car headlamp based on the dichroic reflection device and Optical devices is total At.
Background technique
In vehicle light illumination technical field, in order to meet the different lighting conditions under different running environments, current illumination Lamps and lanterns usually need to include far lighting and lower beam illumination.
For dipped headlight, cardinal principle is to be distributed the light that light source issues again using optical component.Mesh Preceding common practice is that light barrier component, by stopping to some light, Jin Ershi are arranged in light transmitting path Present illumination region forms satisfactory lighting pattern, i.e., with the illumination region of satisfactory "cut-off"line.
The above-mentioned mode stopped to light is capable of forming the dipped headlight for meeting lighting requirement with "cut-off"line Illumination region.But in the light issued due to light source, some light is blocked, so causing to a certain extent Optical energy loss reduces the efficiency of light energy utilization of car light.
Also, the region that above-mentioned light is blocked can be ended by the projection of projection lens in the light and shade of lower beam illumination field Above line, an absolute dark space is formed, leads to not meet pressure standard.In order to reach above the "cut-off"line of lower beam illumination field The standard of faint illumination, it will usually some micro-structure processing are done on projection lens, so that realizing projects some light The purpose of relevant range, this just proposes very high requirement to the machining accuracy of projection lens.
Summary of the invention
It is an object of the invention to: for existing for existing car light lower beam illumination technology, controlled by light barrier mode The problem that illumination region Illumination Distribution causes the efficiency of light energy utilization not high, and led by doing micro-structure processing on projection lens The problem for causing car light processing and manufacturing difficulty big designs a kind of structure that can replace traditional car light.The Vehicle lamp structure introduces phase The dichroic reflection device answered is not only able to improve the efficiency of light energy utilization of vehicle lamp light source, also adds the design freedom of car light, can spirit The projection distribution for controlling illuminating ray livingly, is conducive to the requirement for meeting lower beam illumination.
To achieve the goals above, the technical solution adopted by the present invention are as follows:
A kind of car light lower beam illumination dichroic reflection device is provided with plane of light incidence, light reflection on the dichroic reflection device Face and beam projecting face;Light is refracted into dichroic reflection device by plane of light incidence, and then light is in dichroic reflection device through light The reflection of line reflection face, last light reflect dichroic reflection device by beam projecting face;Make light after projection lens projects, projects Into lower beam illumination field.
Compared to tradition stopping light come by way of controlling illumination region Illumination Distribution, this programme does not shut out the light, All light can be utilized effectively, to improve the efficiency of light energy utilization.Specifically, this programme is by dichroic reflection device to light Thread path guides, and light is enable to project the illumination region in lower beam illumination field below "cut-off"line, carries out main Illumination.Also, light can also be guided to and be projected the illumination region in lower beam illumination field above "cut-off"line, supplemented Illumination reduces the manufacture production difficulty of car light to eliminate the necessity for doing micro-structure processing on projection lens.Total For, this programme is adjusted opticpath by dichroic reflection device, can save light barrier component and projection lens is micro- Corresponding problem brought by small structure, to be conducive to meet lower beam illumination requirement.
As the preferred embodiment of dichroic reflection device, plane of light incidence intersects with light reflecting surface, and intersection forms a contour line; The contour line is incident upon the shape in lower beam illumination field through projection lens, with the "cut-off"line in the requirement of car light lower beam illumination Match.
For traditional Vehicle lamp structure, "cut-off"line is formed by the profile of radical occlusion device, influences optical energy utilization efficiency. This programme is not provided with radical occlusion device, and "cut-off"line is formed by profile for the intersection of plane of light incidence and light reflecting surface Line.This programme is not provided with additional mechanical device, has the advantages that properties of product are stable, durable.
As the preferred embodiment of dichroic reflection device, plane of light incidence intersects with light reflecting surface, and intersection forms a contour line, And radical occlusion device is provided at plane of light incidence;The combination contour line that the contour line and radical occlusion device contour line are collectively formed, It is incident upon the shape in lower beam illumination field through projection lens, is matched with the "cut-off"line in the requirement of car light lower beam illumination.
Radical occlusion device used by this programme is different from the used light barrier component of traditional car light.Traditional light resistance Stopper part, the light above contour line are all blocked.The radical occlusion device of this programme exists only at contour line, is used to form "cut-off"line does not prolong Shen upwards and shuts out the light.
As the preferred embodiment of dichroic reflection device, light first refractive area is provided on the beam projecting face;Make from this The light of region outgoing projects the lower section of "cut-off"line in lower beam illumination field after projection lens projects.
Light is projected key lighting area by way of light first refractive area is arranged on dichroic reflection device by this programme Domain.
As the preferred embodiment of dichroic reflection device, the second refracting sphere of light is provided on the beam projecting face;Make from this The light of region outgoing projects the top of "cut-off"line in lower beam illumination field after projection lens projects.
This programme projects time lighting area by way of the second refracting sphere of light is arranged on dichroic reflection device, by light Domain.It does not need to do small pattern handling on projection lens and projects light above "cut-off"line, to reduce The manufacture difficulty and arrangement difficulty of projection lens.
As the preferred embodiment of dichroic reflection device, light occurs in light reflecting surface all anti-in dichroic reflection device It penetrates;The light reflecting surface is optical total-reflection face or coated reflection face.
Light reflecting surface is designed as fully reflecting surface, there is no the light of spilling, so that the path of light be made to be refined control System.The light for being incident on reflecting surface can be made to be totally reflected by the relationship of refractive index and incident angle.In addition, can also lead to The mode for crossing plating reflectance coating makes light that all reflections occur.
A kind of car light lower beam illumination Optical devices are also wrapped including light source, the reflector matched with light source, projection lens Include above-mentioned dichroic reflection device;For the dichroic reflection device between light source and projection lens, the light of dichroic reflection device is incident Face is located at close to sources side, and beam projecting face is located at nearly projection lens side, and light reflecting surface is located at upside;
The light that light source is issued includes two class of X, Y according to the difference in path:
X lightlike line is projected by light source, is reflected through reflector, is projected through projection lens, is finally projected in lower beam illumination field Primary illumination zone below "cut-off"line;
Y lightlike line is projected by light source, is reflected through reflector, is refracted into dichroic reflection device by plane of light incidence, is being divided It is reflected in reflector through light reflecting surface, dichroic reflection device is reflected by beam projecting face, projects through projection lens, finally projects Into lower beam illumination field.
This programme utilizes above-mentioned dichroic reflection device, designs a kind of lower beam illumination device, mainly utilizes its two kinds of opticpaths. One is directly project primary illumination zone through projection lens by reflector reflection.Another kind is, using above-mentioned dichroic reflection device, Light is projected to additional illumination or the secondary illumination region above primary illumination zone and "cut-off"line.
As the preferred embodiment of Optical devices, the contour line of the dichroic reflection device is located at the focal plane apart from projection lens In the region ± 5mm.
As the preferred embodiment of Optical devices, the projection lens is non-axial symmetrical lens.
A kind of vehicle front lighting lamp assembly, it is saturating including the above-mentioned light source being mutually matched, reflector, dichroic reflection device and projection Mirror.
In conclusion by adopting the above-described technical solution, compared with the prior art, the beneficial effects of the present invention are: this Invention is applied to the dichroic reflection device of car light lower beam illumination, based on the Optical devices of the dichroic reflection device, and is based on the light splitting The vehicle front lighting lamp assembly of reflector and Optical devices has efficiency of light energy utilization height, and manufactures the low advantage of difficulty.Specifically Ground, compared to tradition stopping light come by way of controlling illumination region Illumination Distribution, this programme does not shut out the light, Suo Youguang Line can be utilized effectively, to improve the efficiency of light energy utilization.This programme draws opticpath by dichroic reflection device It leads, light is enable to project the illumination region in lower beam illumination field below "cut-off"line, carry out primary illumination.In addition, also Light can be guided to and be projected the illumination region in lower beam illumination field above "cut-off"line, additional illumination is carried out, to save The necessity for doing micro-structure processing on projection lens has been gone, the manufacture production difficulty of car light is reduced.Generally, this programme Opticpath is adjusted by dichroic reflection device, light barrier component can be saved and projection lens micro-structure is brought Corresponding problem, to be conducive to meet lower beam illumination requirement.
Detailed description of the invention
Fig. 1 is the structural schematic diagram one of dichroic reflection device.
Fig. 2 is the structural schematic diagram two of dichroic reflection device.
Fig. 3 is the light path schematic diagram of dichroic reflection device.
Fig. 4 is the structural schematic diagram of dichroic reflection device another kind embodiment.
Fig. 5 is the structural schematic diagram one of Optical devices.
Fig. 6 is the structural schematic diagram two of Optical devices.
Fig. 7 is the light path schematic diagram of Optical devices.
Label corresponding to component in attached drawing: 1- light source, 2- reflector, 3- optical reflector, 31- plane of light incidence, 32- Light reflecting surface, 33- beam projecting face, 331- light first refractive area, the second refracting sphere of 332- light, 34- contour line, 35- Radical occlusion device, 4- projection lens.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not For limiting the present invention.
Embodiment 1
Present embodiment discloses a kind of car light lower beam illumination dichroic reflection devices, as shown in Figure 1-3, the dichroic reflection device is Visible transparent material.Plane of light incidence, light reflecting surface and beam projecting face are provided on the dichroic reflection device;Light by Plane of light incidence is refracted into dichroic reflection device, and then light reflects in dichroic reflection device through light reflecting surface, last light Dichroic reflection device is reflected by beam projecting face;Make light after projection lens projects, projects in lower beam illumination field.
Specifically, as shown in Fig. 2, being provided with light first refractive area on the beam projecting face.As shown in figure 3, this reality The light first refractive area for applying example is a flat surface, and angle is determined by factors such as angle of incident light, dichroic reflection device refractive index, By the control to angle, makes the light P being emitted from the region after projection lens projects, project light and shade in lower beam illumination field The lower section of dead line.In Fig. 3, light P is emitted by left side incidence by right side.
Specifically, as shown in Fig. 2, being provided with the second refracting sphere of light on the beam projecting face.As shown in figure 3, this reality The second refracting sphere of light for applying example is a curved surface, and angle is determined by factors such as angle of incident light, dichroic reflection device refractive index, By the control to angle, makes the light Q being emitted from the region after projection lens projects, project light and shade in lower beam illumination field The top of dead line.In Fig. 3, light Q is emitted by left side incidence by right side.
The distribution that the dichroic reflection device controls light by the combination of light refraction and optical reflection, it is close to be formed Primary illumination zone in optical illumination requirement below "cut-off"line and the secondary illumination region above "cut-off"line or supplement are shone Area pellucida domain.The scheme of lower beam illumination is formed by light barrier mode instead of tradition, while avoiding what traditional approach had The problem that the efficiency of light energy utilization is low and manufacture difficulty is big.
Embodiment 2
On the basis of embodiment 1, as Figure 2-3, the present embodiment optimizes.
As shown in figure 3, all reflections occur in light reflecting surface in dichroic reflection device for light.The light reflecting surface For optical total-reflection face, the present embodiment is specifically based on dichroic reflection device refractive index, and realizes by adjusting the angle with light. Alternatively, light reflecting surface uses coated reflection face, to reach total reflection effect, to be precisely controlled opticpath.
As shown in Fig. 2, second refracting sphere in the beam projecting face is mutated relative to first refractive area face shape.Such as Fig. 3 institute Show, being incident on light, the second refracting sphere is different from the angle in first refractive area, so that there is different refraction shooting angles, into And realize the purpose of control opticpath.Alternatively, the second refracting sphere is atomization surface, equally there is different incidence and refraction angle Degree, to achieve the purpose that the second refracting sphere is different from the emergent ray angle in first refractive area.
Embodiment 3
On the basis of embodiment 1 or embodiment 2, the present embodiment provides bright in a kind of formation car light lower beam illumination requirement The embodiment of dark dead line.
As shown in Figs. 1-2, plane of light incidence intersects with light reflecting surface, and intersection forms a contour line.It is adopted in the present embodiment Contour line both ends are parallel, and centre is 45 ° of transition connecting lines.It is formed by contour line and is incident upon lower beam illumination through projection lens Shape in can match with the "cut-off"line in the requirement of car light lower beam illumination.
Embodiment 4
On the basis of embodiment 1 or embodiment 2, the present embodiment provides another kinds to be formed in the requirement of car light lower beam illumination The embodiment of "cut-off"line.
As shown in figure 4, plane of light incidence intersects with light reflecting surface, intersection forms a contour line, which is always Line.And radical occlusion device is provided at plane of light incidence, radical occlusion device lower sideline is straight line and 45 ° of transition connecting lines.The intersection The combination contour line that contour line and radical occlusion device contour line or lower sideline are collectively formed, is incident upon lower beam illumination field through projection lens In shape, with car light lower beam illumination require in "cut-off"line match.
Also, the radical occlusion device upper sideline of the present embodiment is flushed with the side of above-mentioned intersection contour line, makes radical occlusion device not Prolong Shen upwards, is directed in embodiment 2 above "cut-off"line so as to avoid blocking, plays that portion of additional illumination Light splitter.
Embodiment 5
Present embodiment discloses a kind of car light lower beam illumination Optical devices, as seen in figs. 5-6, including light source, with light source phase Reflector, the projection lens of cooperation further include dichroic reflection device described in embodiment 1-4 any one;The dichroic reflection device Between light source and projection lens, the plane of light incidence of dichroic reflection device is located at close to sources side, and beam projecting face is located at close Projection lens side, light reflecting surface are located at upside;
As shown in fig. 7, the light that is issued of light source includes two class of X, Y according to the difference in path:
X lightlike line is projected by light source, is reflected through reflector, is projected through projection lens, is finally projected in lower beam illumination field Primary illumination zone below "cut-off"line;
Y lightlike line is projected by light source, is reflected through reflector, is refracted into dichroic reflection device by plane of light incidence, is being divided It is reflected in reflector through light reflecting surface, dichroic reflection device is reflected by beam projecting face, projects through projection lens, finally projects Into lower beam illumination field.
As shown in fig. 7, Y lightlike line is different according to the position projected, and including Y1 lightlike line and Y2 lightlike line:
Y1 lightlike line reflects dichroic reflection device by the light first refractive area on beam projecting face, makes to be emitted from the region Light after projection lens projects, project the lower section of "cut-off"line in lower beam illumination field.Y1 lightlike line corresponding embodiment 1 In P lightlike line.
Y2 lightlike line reflects dichroic reflection device by the second refracting sphere of light on beam projecting face, makes to be emitted from the region Light after projection lens projects, project the top of "cut-off"line in lower beam illumination field.Y2 lightlike line corresponding embodiment 1 In Q lightlike line.
The lower beam illumination Optical devices of the present embodiment can carry out opticpath only by the dichroic reflection device introduced Adjustment is reflected and is reflected by light, realizes primary illumination zone and the light and shade projected light below "cut-off"line Additional illumination region above dead line.
Certainly, light can also be reflected without reflector, and directly enter dichroic reflection device, but the part by light source incidence Light effects are not good enough, and the embodiment of the present application is not set forth in detail.
Embodiment 6
On the basis of embodiment 5, the present embodiment is optimized, and as seen in figs. 5-6, specifically includes following aspect.
The contour line of the dichroic reflection device is located in the focal plane region ± 5mm apart from projection lens.The projection is saturating Mirror is non-axial symmetrical lens.The light source is that unilateral illuminating source, the reflector are located above light source upwards.Light source shines Region is located inside or below reflector;It avoids light to offset up, be impacted so as to avoid to opposite Vehicular visual.
Embodiment 7
Present embodiment discloses a kind of vehicle front lighting lamp assemblies, including being mutually matched described in embodiment 1-6 any one Light source, reflector, dichroic reflection device and projection lens.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.

Claims (10)

1. a kind of car light lower beam illumination dichroic reflection device, it is characterised in that: be provided on the dichroic reflection device plane of light incidence, Light reflecting surface and beam projecting face;Light is refracted into dichroic reflection device by plane of light incidence, and then light is in dichroic reflection It is reflected in device through light reflecting surface, last light reflects dichroic reflection device by beam projecting face;Penetrate light through projection lens After out, project in lower beam illumination field.
2. car light lower beam illumination dichroic reflection device according to claim 1, it is characterised in that: plane of light incidence is anti-with light Face intersection is penetrated, intersection forms a contour line;The contour line is incident upon the shape in lower beam illumination field through projection lens, with car light "cut-off"line in lower beam illumination requirement matches.
3. car light lower beam illumination dichroic reflection device according to claim 1, it is characterised in that: plane of light incidence is anti-with light Face intersection is penetrated, intersection forms a contour line, and radical occlusion device is provided at plane of light incidence;The contour line and radical occlusion device wheel The combination contour line that profile is collectively formed is incident upon the shape in lower beam illumination field through projection lens, wants with car light lower beam illumination "cut-off"line in asking matches.
4. car light lower beam illumination dichroic reflection device according to claim 1, it is characterised in that: set on the beam projecting face It is equipped with light first refractive area;Make the light being emitted from the region after projection lens projects, projects bright in lower beam illumination field The lower section of dark dead line.
5. car light lower beam illumination dichroic reflection device according to claim 1, it is characterised in that: set on the beam projecting face It is equipped with the second refracting sphere of light;Make the light being emitted from the region after projection lens projects, projects bright in lower beam illumination field The top of dark dead line.
6. car light lower beam illumination dichroic reflection device according to claim 1, it is characterised in that: light is in dichroic reflection device All reflections occur in light reflecting surface;The light reflecting surface is optical total-reflection face or coated reflection face.
7. a kind of car light lower beam illumination Optical devices, including light source, the reflector matched with light source, projection lens, feature It is: further includes dichroic reflection device as claimed in any one of claims 1 to 6;The dichroic reflection device is located at light source and projection is saturating Between mirror, the plane of light incidence of dichroic reflection device is located at close to sources side, and beam projecting face is located at nearly projection lens side, light Reflecting surface is located at upside;
The light that light source is issued includes two class of X, Y according to the difference in path:
X lightlike line is projected by light source, is reflected through reflector, is projected through projection lens, and light and shade in lower beam illumination field is finally projected Primary illumination zone below dead line;
Y lightlike line is projected by light source, is reflected through reflector, dichroic reflection device is refracted by plane of light incidence, in dichroic reflection It is reflected in device through light reflecting surface, dichroic reflection device is reflected by beam projecting face, is projected through projection lens, finally projected close In illumination light field.
8. car light lower beam illumination Optical devices according to claim 7, it is characterised in that: the profile of the dichroic reflection device Line is located in the focal plane region ± 5mm apart from projection lens.
9. car light lower beam illumination Optical devices according to claim 7, it is characterised in that: the projection lens is non-axis pair Claim lens.
10. a kind of vehicle front lighting lamp assembly, it is characterised in that: including mutual described in claim 1-6,8-9 any one Light source, reflector, dichroic reflection device and the projection lens matched.
CN201910380092.3A 2019-05-08 2019-05-08 Car light low beam lighting spectral reflector, optical device and car head-light assembly Active CN109973931B (en)

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CN106764810A (en) * 2017-01-12 2017-05-31 上海小糸车灯有限公司 A kind of transparent light guide body and its application with interception
CN209524445U (en) * 2019-05-08 2019-10-22 成都恒坤光电科技有限公司 A kind of car light lower beam illumination dichroic reflection device, Optical devices and vehicle front lighting lamp assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021109362A1 (en) * 2019-12-04 2021-06-10 华域视觉科技(上海)有限公司 Lens and vehicle lamp lighting system
CN112503478A (en) * 2020-11-04 2021-03-16 超视界激光科技(苏州)有限公司 Lighting lamp

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