CN206637552U - A kind of welcome's lamp optical system based on the off-axis light source generation ring of light - Google Patents
A kind of welcome's lamp optical system based on the off-axis light source generation ring of light Download PDFInfo
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- CN206637552U CN206637552U CN201720290853.2U CN201720290853U CN206637552U CN 206637552 U CN206637552 U CN 206637552U CN 201720290853 U CN201720290853 U CN 201720290853U CN 206637552 U CN206637552 U CN 206637552U
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- light
- ring
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Abstract
The utility model proposes a kind of welcome's lamp optical system based on the off-axis light source generation ring of light, including shadow surface and optical array；Optical array is made up of some optical modules, and optical module includes a sub-light source and a ring of light generation lens corresponding with sub-light source；Spot light and collimation lens are provided with sub-light source, spot light is on the focal plane vertical with collimation lens optical axis；The emergent ray of the sub-light source forms annular hot spot after ring of light generation lens refraction on shadow surface；Position of the annular hot spot on shadow surface generates the change of the incidence angle of lens with sub-light source light and changed in the ring of light；This product can be come to generate ring of light pattern on shadow surface with class Fresnel reflections optical element, and can irradiate four ring patterns shaped like Audi's trade mark by light source combination sturcture.
Description
Technical field
It the utility model is related to automotive electronics and optical field, especially a kind of welcome based on the off-axis light source generation ring of light
Lamp optical system.
Background technology
Optical design is widely used in projection lamp, vehicle door lamp and greeting lamp.With the continuous development of automotive engineering, people
Hommization and stylishness to automobile have higher requirement.Vehicle door lamp or greeting lamp are a fashionable elements in automobile
One of, when automobile unblock or during car door opening, will produce on the ground below rearview mirror or below car door pattern or
It is word, can not only plays a part of illumination, and also add the stylishness of automobile.
Main method is that pattern is imaged on the receiving surface using projection theory used by greeting lamp at present, this system master
To include light source, projection objective and quarter figuratum element（Printed sheet, film）, this method is low there is optical efficiency,
The shortcomings of system complex.Greeting lamp also has forms optical design using free form surface non-imaging lens or diffraction optical element, but
It is free form surface or diffraction optical element processed complex, involves great expense, therefore is not conventional.
Fresnel reflections optical element is optics common at present, and it is designed, and simple, size is light and handy, is easily installed,
If Fresnel reflections optical element is used for the optical system of greeting lamp, the design and manufacture of such light fixture are beneficial to.
The content of the invention
The utility model proposes a kind of welcome's lamp optical system based on the off-axis light source generation ring of light, can be rolled over class Fresnel
Penetrate optical element to generate ring of light pattern on shadow surface, and can be irradiated by light source combination sturcture shaped like Audi's trade mark
Four ring patterns.
The utility model uses following technical scheme.
A kind of welcome's lamp optical system based on the off-axis light source generation ring of light, the optical system include shadow surface and optics
Array；The optical array is made up of some optical modules, and the optical module is corresponding with sub-light source including a sub-light source and one
The ring of light generation lens；Spot light and collimation lens are provided with the sub-light source, spot light is located at vertical with collimation lens optical axis
Focal plane on, by finely tuning the off-axis amount of spot light and collimation lens optical axis, make from collimation lens outgoing directional light occur
Angle is offset；The emergent ray of the sub-light source forms annular hot spot after ring of light generation lens refraction on shadow surface；Circle
Position of the ring-shaped light spot on shadow surface generates the change of the incidence angle of lens with sub-light source light and changed in the ring of light.
The ring of light generation lens are the lens that light refraction is carried out based on Fresnel Lenses principle.
The rounded flat board of the ring of light generation lens, the light entrance face of ring of light generation lens is plane, and ring of light generation is saturating
The light-emitting face of mirror is provided with the concentric ring gear of i section indention shape.
When optical array exists between the annular hot spot formed on shadow surface partly overlaps phenomenon, the ring of light life
Shadow shield is provided with into the light entrance face of lens makes the uniform intensity of annular hot spot, the screening to weaken the light intensity of lap
Tabula rasa is the plate being molded with opaque light absorbent, and the vertical view of the shadow shield is in sector.
The spot light, collimation lens, shadow shield, ring of light generation lens, shadow surface are set from top to bottom in vertical direction.
The spot light is the LED light source of semiconductor laser light resource or small lighting angle.
When four ring patterns shaped like Audi's trade mark need to be being generated on shadow surface with optical array, the optical array optics
Component count is four and is densely aligned as a straight line；When four of square arrangement need to be generated on shadow surface with optical array
During ring of light pattern, the number of optical of the optical array is four and densely by square four zenithal alignments.
The ring of light generates lens used by the utility model, is a species Fresnel reflections optical element, and source light passes through
Class Fresnel reflections optical element directly produces spot pattern, is not lost, and higher brightness can be realized with relatively low power consumption,
Product size is light and handy simultaneously, is easily installed, and because structure is simplified so that the anti-seismic performance of this product is more preferable, is more suitable for car
Carry application.
The utility model is worked based on light refraction principle, only need to be a light when needing focus ring position to be adjusted
Source position is finely adjusted on the focal plane vertical with collimation lens optical axis, the optics regulation being well suited under small size space
Work.
The utility model directly produces spot pattern by class Fresnel reflections optical element, without making printing layer, phenanthrene
Woods or diffraction element, without Miniature projection lens.The illuminator has image clearly, and capacity usage ratio is high, image
Depth of focus is big, low cost and other advantages.
Because the utility model is based on the work of Fresnel Lenses principle, ring-shaped light spot, light spot shape are generated with lens focus
Formed by focused light passages, and focused light passages are grown, therefore it is not strict to the required distance of shadow surface, even if because of vehicle traveling or car
It is stopped at uneven road surface and shadow surface distance has been deviateed or has been tilted, the vertical view of the ring-shaped light spot generated is not easy to produce to shape
Gave birth to large deformation.
Brief description of the drawings
With reference to the accompanying drawings and detailed description to the further details of explanation of the utility model：
Accompanying drawing 1 is schematic diagram of the present utility model（Generate four ring patterns arranged in a straight line shaped like Audi's trade mark）；
Accompanying drawing 2 is the cut-away illustration of optical module of the present utility model；
Accompanying drawing 3 is that the utility model optical module spot light is located at light path schematic diagram when on collimation lens optical axis；
Accompanying drawing 4 is light path schematic diagram when the utility model optical module spot light deviates collimation lens optical axis；
Accompanying drawing 5 is the schematic diagram of the utility model optical array（Generate the Fourth Ring ring of light arranged in a straight line shaped like Audi's trade mark
Pattern）；
Accompanying drawing 6 is another schematic diagram of the utility model optical array（Four rings of light by square vertices arrangement of generation
Pattern）；
In figure：1- shadow shields；The 2- rings of light generate lens；3- collimation lenses；4- annular hot spots；The superposition of 5- ring-shaped light spots
Scope；6- shadow surfaces；7- ring gears；8- optical modules；9- spot lights；10- optical arrays.
Embodiment
As shown in figures 1 to 6, a kind of welcome's lamp optical system based on the off-axis light source generation ring of light, the optical system include
Shadow surface 6 and optical array 10；The optical array 10 is made up of some optical modules 8, and the optical module 8 includes a sub-light
Source and a ring of light generation lens 2 corresponding with sub-light source；Spot light 9 and collimation lens 3, spot light 9 are provided with the sub-light source
On the focal plane vertical with the optical axis of collimation lens 3, by finely tuning the off-axis amount of spot light 9 and the optical axis of collimation lens 3, make from
Angle skew occurs for the directional light that collimation lens 3 is emitted；The emergent ray of the sub-light source through the ring of light generation lens 2 reflect after
Annular hot spot 4 is formed on shadow surface；Position of the annular hot spot 4 on shadow surface 6 generates saturating with sub-light source light in the ring of light
The change of the incidence angle of mirror and change.
The ring of light generation lens 2 are the lens that light refraction is carried out based on Fresnel Lenses principle.
The rounded flat board of the ring of light generation lens, the light entrance face of ring of light generation lens is plane, and ring of light generation is saturating
The light-emitting face of mirror is provided with the concentric ring gear 7 of i section indention shape.
When optical array exists between the annular hot spot formed on shadow surface partly overlaps phenomenon, the ring of light life
Shadow shield 1 is provided with into the light entrance face of lens makes the uniform intensity of annular hot spot to weaken the light intensity of lap, described
Shadow shield 1 is the plate being molded with opaque light absorbent, and the vertical view of the shadow shield is in sector.
The spot light 9, collimation lens 3, shadow shield 1, the ring of light generation lens 2, shadow surface 6 in vertical direction from top to bottom
Set.
The spot light is the LED light source of semiconductor laser light resource or small lighting angle.
When four ring patterns shaped like Audi's trade mark need to be being generated on shadow surface with optical array, the optical array optics
Component count is four and is densely aligned as a straight line；When four of square arrangement need to be generated on shadow surface with optical array
During ring of light pattern, the number of optical of the optical array is four and densely by square four zenithal alignments.
Embodiment 1：
The automobile of Audi's board is located to set greeting lamp of the present utility model below rearview mirror or below car door, when automobile solution
When lock or car door opening, the downward projected spot of greeting lamp, ground of the meeting below rearview mirror or below car door（Shadow surface）
Upper four ring patterns for producing Audi trade mark, because this four ring patterns is formed based on lens focus light path, therefore to the height of greeting lamp
It is not high to spend required precision（It is namely less demanding to lens smooth surface and the accuracy of the distance between shadow surface）, when vehicle travels
Or vehicle, when being stopped at the road surface of injustice, the vertical view of four ring patterns of greeting lamp projection remains to be held essentially constant to shape.
When the ring of light position of four ring patterns need to be adjusted, spot light 9 need to be only adjusted with deviateing the optical axis of collimation lens 3
Relative distance.
Embodiment 2：
The ring of light generation lens 2 of this product are refractor, and the tooth form computational methods of this refractor are；
If the exiting surface of lens 2 is provided with the concentric ring gear 7 of i section indention shape, the center of circle of ring gear 7 and lens 2
The center of circle overlaps, and the tooth form inclination angle of the zigzag fashion isα, a height of h of tooth, the facewidth of each tooth form is identical and is p, the tooth of the i-th ring
Shape inclined-plane midpoint is to the radial distance of central shaftr i , the bottom of the tooth of zigzag fashion is generally aligned in the same plane.
When light source emergent light is perpendicular to refractor smooth surface, the Refractive Index of Material of refractor is n, lens smooth surface with
The distance between shadow surface is WD, it is desirable to lens on light source emergent light be focused refraction be allowed on shadow surface formed radius be
During the ring-shaped light spot of d circular,
The tooth form of the zigzag fashion of i-th ring gearAccounting equation is；
Formula 1；
In the zigzag fashion of i-th ring gear, sawtooth is while perpendicular to lens smooth surface；Sawtooth another side is and lens smooth surface
The angled chamfered edge set, chamfered edge and the angle of lens smooth surface are tooth form inclination angle, the tooth form inclination angle of i-th ring gear
Accounting equation is；
Formula 2；
The tooth of i-th ring gear is highAccounting equation is；
Formula 3；
When require optical array generate four ring-shaped light spots, and ring-shaped light spot arrange on the same line and superposition forming such as
During four ring patterns of Audi's trade mark, four by close-packed arrays in same straight line or close-packed arrays for square of the optical array
Optical module forms；Spot light center is configured by reference of systematic optical axis in each optical module, when optical array is arranged as
When straight line is arranged, the off-axis direction of spot light is offset along array orientation；When optical array is that square arrangement is arranged, spot light
Off-axis direction is offset in focal plane interior edge two-dimensional directional, ring-shaped light spot caused by each optical module is shifted on shadow surface
And it is superimposed.
The optical module of the optical array of four ring patterns of the generation is also interior to set shadow shield 1 to cut down Bright folding part
Light intensity；The shadow shield 1 is the fanning strip made with opaque light absorbent；The shadow shield be placed in light source and refractor by
Between smooth surface, the summit of fan-shaped shadow shield 1 is located at the circle centre position of refractor 2, and the arc of fan-shaped shadow shield is located at two optical module phases
At the rims of the lens that ortho position is put.
The fan-shaped shadow shield quantity is two or more, and each fan-shaped shadow shield is located at lens smooth surface angularly in relation to one another
On.
The light source is semiconductor laser or LED light source.
The computational methods of the tooth form coordinate point set of the exiting surface of the refractor are divided into following steps；
A1, the radius d for confirming required generation ring-shaped light spot, by the size of greeting lamp, set lens smooth surface and shadow surface
The distance between WD numerical value；
A2, the wavelength by light source emergent light, determine the Refractive Index of Material n of refractor value；
A3, the ring-shaped light spot quantity according to required generation, it is determined that the number of optical of composition optical array, ring-shaped light spot
Number is number of optical；
A4, the diameter of refractor determined according to the size of greeting lamp, number of optical, needed further according to actual processing
The concentric ring gear facewidth p on each refractor is determined, so that it is determined that the quantity i of each ring gear with one heart；
A5, by formula 1 calculate each distance of the tooth form inclined-plane midpoint to lens centre axle on ring gear section with one heart；
A6, by formula 2 calculate it is each with one heart on ring gear section tooth form tooth form inclination angle；
A7, calculate by formula 3 that each with one heart the tooth of tooth form is high on ring gear section；
A8, using the smooth surface of refractor as X-axis, the central shaft of refractor is Y-axis, obtains tooth form coordinate point set.
Claims (7)
- A kind of 1. welcome's lamp optical system based on the off-axis light source generation ring of light, it is characterised in that：The optical system includes shining Penetrate face and optical array；The optical array is made up of some optical modules, the optical module include a sub-light source and one with The ring of light corresponding to sub-light source generates lens；Spot light and collimation lens are provided with the sub-light source, spot light is located at collimating thoroughly On the vertical focal plane of mirror optical axis, by finely tuning the off-axis amount of spot light and collimation lens optical axis, make from collimation lens outgoing Angle skew occurs for directional light；The emergent ray of the sub-light source forms annulus after ring of light generation lens refraction on shadow surface Shape hot spot；Position of the annular hot spot on shadow surface generates the change of the incidence angle of lens with sub-light source light and become in the ring of light Change.
- A kind of 2. welcome's lamp optical system based on the off-axis light source generation ring of light according to claim 1, it is characterised in that： The ring of light generation lens are the lens that light refraction is carried out based on Fresnel Lenses principle.
- A kind of 3. welcome's lamp optical system based on the off-axis light source generation ring of light according to claim 2, it is characterised in that： The rounded flat board of the ring of light generation lens, the light entrance face of ring of light generation lens is plane, and the light of ring of light generation lens goes out Penetrate concentric ring gear of the face provided with i section indention shape.
- A kind of 4. welcome's lamp optical system based on the off-axis light source generation ring of light according to claim 3, it is characterised in that： When optical array exists between the annular hot spot formed on shadow surface partly overlaps phenomenon, the ring of light generation lens Shadow shield is provided with light entrance face makes the uniform intensity of annular hot spot to weaken the light intensity of lap, the shadow shield be with The plate of opaque light absorbent shaping, the vertical view of the shadow shield is in sector.
- A kind of 5. welcome's lamp optical system based on the off-axis light source generation ring of light according to claim 4, it is characterised in that： The spot light, collimation lens, shadow shield, ring of light generation lens, shadow surface are set from top to bottom in vertical direction.
- A kind of 6. welcome's lamp optical system based on the off-axis light source generation ring of light according to claim 1, it is characterised in that： The spot light is the LED light source of semiconductor laser light resource or small lighting angle.
- A kind of 7. welcome's lamp optical system based on the off-axis light source generation ring of light according to claim 1, it is characterised in that： When four ring patterns shaped like Audi's trade mark need to be being generated on shadow surface with optical array, the optical array number of optical Four and to be densely aligned as a straight line；When four ring of light patterns that need to generate square arrangement on shadow surface with optical array When, the number of optical of the optical array is four and densely by square four zenithal alignments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720290853.2U CN206637552U (en) | 2017-03-23 | 2017-03-23 | A kind of welcome's lamp optical system based on the off-axis light source generation ring of light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720290853.2U CN206637552U (en) | 2017-03-23 | 2017-03-23 | A kind of welcome's lamp optical system based on the off-axis light source generation ring of light |
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| Publication Number | Publication Date |
|---|---|
| CN206637552U true CN206637552U (en) | 2017-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720290853.2U Expired - Fee Related CN206637552U (en) | 2017-03-23 | 2017-03-23 | A kind of welcome's lamp optical system based on the off-axis light source generation ring of light |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030531A (en) * | 2018-01-12 | 2019-07-19 | 法雷奥照明公司 | Optical module for motor vehicles |
-
2017
- 2017-03-23 CN CN201720290853.2U patent/CN206637552U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030531A (en) * | 2018-01-12 | 2019-07-19 | 法雷奥照明公司 | Optical module for motor vehicles |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171114 Termination date: 20210323 |
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| CF01 | Termination of patent right due to non-payment of annual fee |