CN107314810B - Light sensor - Google Patents
Light sensor Download PDFInfo
- Publication number
- CN107314810B CN107314810B CN201710673784.8A CN201710673784A CN107314810B CN 107314810 B CN107314810 B CN 107314810B CN 201710673784 A CN201710673784 A CN 201710673784A CN 107314810 B CN107314810 B CN 107314810B
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- light
- optical lens
- optical
- shaped face
- plane
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- 230000003287 optical effect Effects 0.000 claims abstract description 115
- 238000010586 diagram Methods 0.000 description 3
- 206010039203 Road traffic accident Diseases 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/04—Optical or mechanical part supplementary adjustable parts
- G01J1/0407—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
- G01J1/0411—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings using focussing or collimating elements, i.e. lenses or mirrors; Aberration correction
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The present invention relates to a kind of light sensors, collect ambient to top optical sensor module by top optical lens, vehicle running environment light are judged, while collect front light to front optical sensor module by front optical lens, to judge whether to open and close car light；In combination with ambient light and front light, it is more accurate to judge；Top optical lens lower surface is the waveform free form surface that several semi-cylinder similar bar shaped faces form side by side, it may detect more ambients, so that the light for entering top light receiving tube has larger incidence angle and range, so that top light receiving tube collects practical ambient light, it avoids causing erroneous judgement due to non local light, it enables to before automobile enters the environment of light variation, adjusts the switch of headlight for vehicles.
Description
Technical field
The present invention relates to controller of vehicle technical field, more particularly to a kind of light sensor.
Background technology
At present, the open and close of car lighting lamp, generally using the judgement of driver as foundation.In the dusk and dawn
It carves or when automobile comes in and goes out tunnel or during underground parking, can all encounter that ambient is dimmed or the situation that brightens.Due to driver's mesh
Depending on the difference of ability or the difference of micro-judgment, it be easy to cause because the danger to either large or small traffic accident occurs during brightness poor response
Danger.In addition, when two vehicles head-on intersect, since the switching of far and near lamp is improper or not in time, may also lead to other side driver or sheet
Body eyes are had a car accident by the stimulation of the strong light of far lamp.Have again and divide at cockcrow or by under dark lighted environment, driver has can
It can forget or can not be learnt from instrument board the on or off state of car light, cause car light on daytime always in opening.Then exist
After parking, the car light of unlatching totally, causes the power consumption of accumulator in the matter of regret that can not start the vehicle next time.
Therefore, it also occurs and current light brightness is sensed using light sensor, according to the difference of sensor light degree
It opens and closes and controls into driving lamp.Existing light sensor is mainly collected ambient light and front light by optical component, then is passed through
Light signal is switched to electric signal by photodiode, to adjust the keying of car light.But due to existing light sensor ambient light
Collection angle range is not wide, and front photoinduction is weaker, can not relatively accurately judge vehicle running environment, easily generates erroneous judgement.
Invention content
The technical problem to be solved by the present invention is to：In order to overcome the shortcomings of existing light sensor, the present invention provides a kind of
Light sensor is enabled to before automobile enters light variation, adjusts the switch of headlight for vehicles.
The technical solution adopted by the present invention to solve the technical problems is：A kind of light sensor, the front optical assembly
Including front light optical module and front optical sensor module, the front light optical module includes front optical lens, before described
Square optical sensor module includes front light receiving tube, and light is received after the optical lens of front by the front light receiving tube；Institute
It states top optical assembly and includes top light optical module and top optical sensor module, the top light optical module includes top light
Lens, the upper surface of the top optical lens is plane, and lower surface is free for the waveform that several strip structures form side by side
Curved surface, the top optical sensor module include top light receiving tube, and light is connect after the optical lens of top by the top light
Closed tube receives；The front optical lens and the setting close to each other of top optical lens, and pass through block and mutually shield light.The present invention
The lens arrangement of waveform free form surface being made up of side by side several strip structures can receive the top of wider scope
Light, the light range specifically received are, using the windshield of automobile as horizontal plane, the direction that automobile moves forward is front and rear
Direction can receive ranging from -47 °~+47 ° of horizontal direction receiving angle A, and the plane and horizontal plane where A are perpendicular
And it is vertical with front-rear direction, ranging from 23 °~93 ° of vertical direction receiving angle B, the plane where B is mutually hung down with horizontal plane
It is straight and parallel with front-rear direction.This makes it possible to before automobile enters the environment of light variation, the change of light is received in advance
Change, if dark environment, it will be able to open headlight in advance, driver be allowed to see front road conditions clearly, avoid traffic accident generation.
The upper surface of the front optical lens is plane, and lower surface is shaped face, and the shaped face is by cambered surface and inclined-plane group
Into the cambered surface of shaped face connects with the inclined-plane of shaped face, and the cambered surface of shaped face is more than the inclined-plane of shaped face.The cambered surface of shaped face
Anaclasis immediately ahead of not being can be gone out, the inclined-plane of shaped face just injects the light in front.This design is so that rotation
Turn curved surface and play the role of light convergence, the rotation baseline for changing surface of revolution can be so that reception pipe receives the light of special angle
Line, the light range specifically received are, using the windshield of automobile as horizontal plane, the direction that automobile moves forward is front and rear
Direction can receive ranging from -10 °~+10 ° of horizontal direction receiving angle C, and the plane and horizontal plane where C are perpendicular
And it is vertical with front-rear direction, ranging from 15 °~15 ° of vertical direction receiving angle D, the plane where D is mutually hung down with horizontal plane
It is straight and parallel with front-rear direction.
Upper surface of the present invention refers to plane of light incidence, and lower surface refers to beam projecting face.
The inclined-plane of the shaped face leans on close over optical lens, and the both ends of the strip structure of the top optical lens are along front light
The line direction of lens and top optical lens extends.Front optical lens is collection vehicle front light, and top optical lens is to adopt
Collection vehicle environmental light, after front optical lens and the setting close to each other of top optical lens, the inclined-plane of shaped face is saturating by close over light
Mirror, the bevel angle of shaped face is just suitable, injects vehicle front light.
The cambered surface of shaped face and the inclined-plane joint of shaped face form connecting line, and the connecting line is a camber line.
In order to which other zonal rays of vehicle front is made to be reflected away by the cambered surface of shaped face as possible, the radian ＜ of the camber line
180°。
Preferably, freely song of the section of the strip structure of the lower surface of the top optical lens for 6 similar semicircles
Line.
The front light receiving tube and top light receiving tube are photodiode.Light enters front optical lens and top
Optical lens is received through superrefraction and reflection by photodiode, and photodiode converts optical signals to electric signal.
The invention has the advantages that the light sensor of the present invention, it is supreme to collect ambient by top optical lens
Square optical sensor module judges vehicle running environment light, while collects front light to front light sensing by front optical lens
Device module, to judge whether to open and close car light；In combination with ambient light and front light, it is more accurate to judge；Top optical lens following table
Face is the waveform free form surface that several semi-cylinder similar bar shaped faces form side by side, may detect more ambients,
So that the light for entering top light receiving tube has larger incidence angle and range so that top light receiving tube collects practical ring
Border light avoids causing erroneous judgement due to non local light, enables to before automobile enters the environment of light variation, and adjustment automobile is big
The switch of lamp.
Description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation of the front light optical module and top light optical module in the light sensor of the present invention
Figure.
Fig. 2 is the structural representation of the front light optical module and top light optical module in the light sensor of the present invention
Figure.
Fig. 3 is the fundamental diagram of the top optical assembly in the light sensor of the present invention.
Fig. 4 is the fundamental diagram of the front optical assembly in the light sensor of the present invention.
In figure：1st, front optical lens, 1-1, shaped face, 1-11, shaped face cambered surface, 1-12, shaped face inclined-plane, 1-2,
Connecting line, 2, front light receiving tube, 3, top optical lens, 3-1, waveform free form surface, 4, top light receiving tube, 5, gel,
6th, windshield, 7, block, 8, front light, 9, ambient light.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows composition related to the present invention.
A kind of light sensor of the present invention, including front optical assembly and top optical assembly, front optical assembly includes front
Light optical module and front optical sensor module, front light optical module include front optical lens 1, front optical sensor module packet
Front light receiving tube 2 is included, light 1 is received after the optical lens of front by front light receiving tube 2.
Top optical assembly includes top light optical module and top optical sensor module, and top light optical module includes top
Optical lens 3, top optical sensor module include top light receiving tube 4, and light is after top optical lens 3 by top light receiving tube
4 receive.Front light receiving tube 2 and top light receiving tube 4 are photodiode.Light enters front optical lens 1 and top light
Lens 3 are received through superrefraction and reflection by photodiode, and photodiode converts optical signals to electric signal.Certainly, front
Light receiving tube 2 and top light receiving tube 4 can be with other electrooptical devices.
As illustrated in fig. 1 and 2, front optical lens 1 and 3 setting close to each other of top optical lens, and pass through block 7 and mutually shield
Light.Block 7 close to front optical lens 1 on one side be higher than by close over optical lens 3 while to, front optical lens 1, top light saturating
Mirror 3 and block 7 are transparent material.The upper surface of top optical lens 3 is plane, and lower surface is several strip structures group side by side
Into waveform free form surface 3-1.The upper surface of front optical lens 1 be plane, lower surface be shaped face 1-1, shaped face 1-1 by
Cambered surface and inclined-plane composition, the cambered surface 1-11 of shaped face connects with the inclined-plane 1-12 of shaped face, and the cambered surface 1-11 of shaped face is more than
The inclined-plane 1-12 of shaped face.
As shown in figure 3, optical lens 3 lower surface in top is the waveform free form surface 3- that several strip structures form side by side
1, it may detect more ambients so that the light for entering top light receiving tube 4 has larger incidence angle and range so that
Top light receiving tube 4 collects practical ambient light 9, avoids causing erroneous judgement due to non local light.Fig. 3 has chosen top light
The horizontal direction section of the windshield 6 of lens 3, gel 5 and vehicle in order to clearly illustrate operation principle, is omitted in figure
Other component.Optical lens 3 upper surface in top is plane (plane of light incidence), and lower surface is waveform free form surface 3-1, similar
The design of convex lens can increase the light angle of horizontal direction.By top optical lens 3, when sensor is labelled to windshield 6
During inside, photodiode can receive the wider light of vehicle up direction range.Change the class on waveform free form surface 3-1
It can change the receiving angle of horizontal direction like the radian and number of small semicircle.
Fig. 4 has chosen the vertical direction section of the windshield 6 of front optical lens 1, gel 5 and vehicle, in order to clear
Ground shows operation principle, and other component is omitted in figure.As shown in Fig. 2, windshield 6 and horizontal direction angle are 30 °.Gel
5 are used to that sensor to be made to be bonded with windshield 6.Front light receiving tube 2 can receive the small range of light immediately ahead of vehicle
And avoid the interference of other direction light.The refractive index of gel 5 is identical with front optical lens 1, windshield 6.Front light 8 passes through
Windshield 6, gel 5, front optical lens 1 are crossed along straightline propagation, is just reflected when touching air, finally by photosensitive two pole
Pipe receives.Due to the optical design of front optical lens 1, the cambered surface 1-11 of shaped face can go out the anaclasis immediately ahead of not being
It goes, the inclined-plane 1-12 of shaped face just injects the light in front.Before this design is so that only inject the light of vehicle front
In square light receiving tube 2, the interference of other zonal rays is avoided.
The inclined-plane 1-12 of shaped face leans on close over optical lens 3, and the both ends of the strip structure of top optical lens 3 are to along front light
Lens 1 and the line direction of top optical lens 3 extend.Front optical lens 1 is collection vehicle front light, top optical lens 3
Collection vehicle ambient light 9, front optical lens 1 with after 3 setting close to each other of top optical lens, the inclined-plane 1-12 of shaped face
By close over optical lens 3, the inclined-plane 1-12 angles of shaped face are just suitable, inject vehicle front light 8.The cambered surface of shaped face
The inclined-plane 1-12 joints of 1-11 and shaped face form connecting line 1-2, and connecting line 1-2 is a camber line.In order to make vehicle as possible
Other zonal rays of front are reflected away by the cambered surface 1-11 of shaped face, 180 ° of the radian ＜ of camber line.
Preferably, in Fig. 1, the section of the strip structure of the lower surface of top optical lens 3 is 6 freedom similar to semicircle
Curve forms.
The light sensor of the present invention collects ambient to top light receiving tube 4 by top optical lens 3, judges vehicle
Running environment light 9, while front light 8 is collected to front light receiving tube 2 by front optical lens 1, to judge whether to open
Close car light；In combination with ambient light 9 and front light 8, it is more accurate to judge.Optical lens 3 lower surface in top is several
The waveform free form surface 3-1 that shape structure forms side by side, may detect more ambients so that enter top light receiving tube
4 light has larger incidence angle and range so that top light receiving tube 4 collects practical ambient light 9, avoids because of non-office
Portion's light and cause erroneous judgement.In front optical lens 1, the cambered surface 1-11 of shaped face can go out the anaclasis immediately ahead of not being,
The inclined-plane 1-12 of shaped face just injects the light in front.This design by the front light of vehicle 8 so that only inject front
In light receiving tube 2, the interference of other zonal rays is avoided.
Using above-mentioned desirable embodiment according to the present invention as enlightenment, by above-mentioned description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the content on specification, it is necessary to determine its technical scope according to right.
Claims (6)
1. a kind of light sensor, it is characterised in that：Including front optical assembly and top optical assembly,
The front optical assembly includes front light optical module and front optical sensor module, and the front light optical module includes
Front optical lens（1）, the front optical sensor module include front light receiving tube（2）, light process front optical lens（1）Afterwards
By the front light receiving tube（2）It receives；
The top optical assembly includes top light optical module and top optical sensor module, and the top light optical module includes
Top optical lens（3）, the top optical lens（3）Upper surface for plane, lower surface forms side by side for several strip structures
Waveform free form surface（3-1）, the top optical sensor module include top light receiving tube（4）, light process top light
Lens（3）Afterwards by the top light receiving tube（4）It receives；
The front optical lens（1）With top optical lens（3）Setting close to each other, and pass through block（7）Mutually shielding light,
The front optical lens（1）Upper surface for plane, lower surface is shaped face（1-1）, the shaped face（1-1）By cambered surface
It is formed with inclined-plane, the cambered surface of shaped face（1-11）With the inclined-plane of shaped face（1-12）Connect, and the cambered surface of shaped face（1-11）Greatly
In the inclined-plane of shaped face（1-12）.
2. light sensor as described in claim 1, it is characterised in that：The inclined-plane of the shaped face（1-12）By close over light
Lens（3）, the top optical lens（3）Strip structure both ends along front optical lens（1）With top optical lens（3）Line
Direction extends.
3. light sensor as described in claim 1, it is characterised in that：The cambered surface of shaped face（1-11）With the inclined-plane of shaped face
（1-12）Joint forms connecting line（1-2）, the connecting line（1-2）For a camber line.
4. light sensor as claimed in claim 3, it is characterised in that：180 ° of the radian ＜ of the camber line.
5. light sensor as described in claim 1, it is characterised in that：The top optical lens（3）Lower surface strip
Free curve of the section of structure for 6 similar semicircles.
6. light sensor as described in claim 1, it is characterised in that：The front light receiving tube（2）With top light-receiving
Pipe（4）It is photodiode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710673784.8A CN107314810B (en) | 2017-08-09 | 2017-08-09 | Light sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710673784.8A CN107314810B (en) | 2017-08-09 | 2017-08-09 | Light sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107314810A CN107314810A (en) | 2017-11-03 |
| CN107314810B true CN107314810B (en) | 2018-07-06 |
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ID=60170640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710673784.8A Active CN107314810B (en) | 2017-08-09 | 2017-08-09 | Light sensor |
Country Status (1)
| Country | Link |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63176A (en) * | 1986-06-19 | 1988-01-05 | Honda Motor Co Ltd | Composite type photosensor |
| JP2002039858A (en) * | 2000-07-18 | 2002-02-06 | Denso Corp | Photo-detecting sensor in controller for automatic lighting-on and -off for vehicle |
| DE502006007640D1 (en) * | 2005-05-04 | 2010-09-23 | Preh Gmbh | DEVICE FOR DETECTING AMBIENT AND FOREIGN LIGHT IN A MOTOR VEHICLE |
| JP5077780B2 (en) * | 2009-07-06 | 2012-11-21 | 株式会社デンソー | Photodetector |
| DE102009053825A1 (en) * | 2009-11-18 | 2011-05-19 | Trw Automotive Electronics & Components Gmbh | Optical sensor device for detecting ambient light |
| JP6038532B2 (en) * | 2012-08-10 | 2016-12-07 | 株式会社ヴァレオジャパン | Light automatic lighting control device |
| CN206959985U (en) * | 2017-08-09 | 2018-02-02 | 江苏日盈电子股份有限公司 | Light sensor |
-
2017
- 2017-08-09 CN CN201710673784.8A patent/CN107314810B/en active Active
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