CN205679855U - Use the automobile head-up display system of convex lens - Google Patents
Use the automobile head-up display system of convex lens Download PDFInfo
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- CN205679855U CN205679855U CN201620370015.1U CN201620370015U CN205679855U CN 205679855 U CN205679855 U CN 205679855U CN 201620370015 U CN201620370015 U CN 201620370015U CN 205679855 U CN205679855 U CN 205679855U
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Abstract
A kind of automobile using convex lens head-up display system, the cassette part that it is made up of shell and internal optics and electronic component, driver is to enter line parameter by auto navigation to HUD to arrange, then the single-chip microcomputer passing in HUD by the parameter setting that navigates uses, its inner member being characterized by it includes single-chip microcomputer, TFT screen, plane mirror, convex lens, single-chip microcomputer by teletext transmission to TFT screen, the graph text information order that TFT screen sends passes through plane mirror, convex lens project the front windshield of automobile, it is designed with debugging joint on shell, being connected with single-chip microcomputer of debugging joint.The utility model makes easily, is conducive to improving the yields producing, reduces production cost, requires significantly to relax for the deformation in front windshield manufacture process, and also reduces the requirement of front windshield assembly precision.
Description
Technical field
This patent belongs to auto parts machinery, especially belongs to automobile head up display (HUD) display system.
Background technology
Head-up display (Head Up Display), hereinafter referred to as HUD, the part middle and high end vehicle of volume production is all with HUD
The graph text information such as speed and navigation can be projected on front windshield by display function, and driver is by auto navigation pair
HUD enters line parameter and arranges, and the single-chip microcomputer 4 passing in HUD by the parameter setting that then navigates uses.HUD such as BMW shows
System, the cassette part that it is made up of shell and internal optics and electronic component, be fixed on the sight line of driver just before
Below the instrument desk of side.For the ease of description, inside light path and the image-forming principle of BMW HUD are represented simply as shown in Figure 1:
Wherein 7 is single-chip microcomputer, and graph text information is passed to TFT screen, and 1 is TFT screen, is used for the graph text information such as display speed and navigation；2 is flat
The content showing in TFT is reflexed in free form surface reflective mirror 3 by face reflective mirror, and purpose is for increasing optical path length.Whole HUD
In optical system, driver is it is seen that by the graph text information of front windshield back reflection, this is a virtual image, and driver feels
Feeling that the virtual image is the front at front windshield, the light path of HUD is longer, then driver can think that the virtual image can be got over from front windshield
Far.So the purpose increasing plane mirror is just to increase the length of light path；3 is free form surface reflective mirror, is the core of HUD light path
Heart assembly；The light of HUD, as the part of light path, is reflexed to the eyes of driver by the front windshield that 5 is automobile；4
For the eyes of driver, i.e. driver it is observed that the graph text information that shows of HUD and information, driver will be considered that this is one
It is shown in the virtual image in front windshield front.
Free form surface reflective mirror 3, its function is described in detail as follows:
Function 1: this reflective mirror has certain curvature, is the reflective mirror of a concave surface, plays the role of amplification, BMW HUD's
Graph text information after TFT specification is 2.2 inches, but driver observes amplification is about 7.9 inches, and magnifying power is about 3.6 times, this
Individual enlarging function is realized by free form surface reflective mirror exactly.
Function 2: while amplifying graph text information, is also equivalent to increase the length of light path, the length of increase and times magnification
Number is identical, and here image amplifies 3.6 times, also corresponds to light path is extended 3.6 times, therefore originally only has total light of 0.47 meter long
Road, realizes the virtual image from the length that driver's eyes is 1.7 meters after extending.
Function 3: the front windshield of automobile is not a plane, but the curved surface of a nonlinear change, and showing
Show that the Curvature varying of each position in region all differs, normal graph text information so can be caused to produce distortion, therefore certainly
By optical reflector of curved surface on the premise of keeping graph text information enlarging function, it is necessary to the front windshield in viewing area in display
The distortion that Curvature varying in region produces graph text information carries out Contrary compensation, and the optics for offsetting front windshield generation is abnormal
Become.
Function 4: owing to TFT display screen is smaller, only 2.2 inches, the graph text information after amplification is 7.9 inches, and
Light path also has the existence of reflective mirror and front windshield, therefore causes reflecting to front windshield from TFT different display position
Different to the optical path length of driver's eyes, also also result in graph text information and be distorted, in HUD, be also by freely song
Face reflective mirror correct and offset optical path length is different and the distortion that produces.
In BMW HUD, different to front windshield curvature and optical path length owing to being dependent on free form surface reflective mirror
Distortion be corrected, therefore design free form surface reflective mirror when be necessary for the HUD internal structure for a certain vehicle, HUD
The factors such as installation site, the position of front windshield viewing area and shape are customized, the design to free form surface reflective mirror
Requiring high, the HUD using free form surface reflective mirror must be that special train is special, if being installed to different vehicles, or vehicle
The moulding of change front windshield, then the free form surface reflective mirror of HUD must redesign, and therefore HUD main frame is cannot be general
's.In the case of uncurrent, also the requirement to foozle and rigging error with light path associated components is strict, if error
Bigger than normal, may result in the problems such as graph text information distortion and occur.
Owing to free form surface reflective mirror is high to requirement on machining accuracy, therefore difficulty of processing is big, and due to curved mirror
Concave, therefore to the processing of mould it is also proposed that very high requirement；Due to free form surface reflective mirror light path to be realized deformity school
Orthofunction, therefore very high to index requests such as its deformation and reflecting rates, due to material behavior, return to normal after high temperature process
State has certain shrinkage factor, and it is low that this can cause producing yields, and production cost is high.Due to free form surface reflective mirror and front
The Curvature varying result of wind glass needs to cancel out each other, then to precision and the deformation of front windshield it is also proposed that very high requirement,
If going beyond the scope, also resulting in graph text information and substantially distorting, the manufacturing cost therefore also resulting in front windshield significantly goes up
Rise.
Content of the invention
This patent aims to overcome that in the HUD display system of current automobile because using free form surface reflective mirror to be caused
The shortcoming that difficulty of processing is big, production cost is high, provides the automobile of the use convex lens that a kind of handling ease, production cost are low to use flat
Depending on display system.
The technical solution adopted in the present invention is a kind of automobile head-up display system using convex lens, and it is by outward
Shell and a cassette part of internal optics and electronic component composition, driver is to enter line parameter by auto navigation to HUD
Arranging, the single-chip microcomputer passing in HUD by the parameter setting that then navigates uses, and its inner member being characterized by it includes list
Piece machine, TFT screen, plane mirror, convex lens, the graph text information that teletext transmission is sent by single-chip microcomputer to TFT screen, TFT screen
Order is projected the front windshield of automobile by plane mirror, convex lens, and shell is designed with debugging joint, and debugging connects
Being connected with single-chip microcomputer of head.
The present invention is to improve in existing head-up display system-based, shell and electronic system and prior art
Similar, utilize common convex lens to replace free form surface reflective mirror, there is handling ease, production cost low, common convex lens replace
Replacement principle after free form surface reflective mirror is as follows:
Function 1: use common convex lens to realize the function that graph text information content is amplified, this point is easy to understand, by adjusting
Distance between convex lens and TFT and plane mirror, it is achieved the effect of amplification, and multiplication factor can carry out as required
Regulation.This patent realize HUD in, select common biconvex lens, the diameter of convex lens between 150-180mm, focal length
Between 140-180mm, if focal length is too short, curvature is big, it is not easy to processing, and the oversize then same multiplication factor of focal length needs
Farther distance, the volume causing HUD is excessive, owing to becoming real image in amplification, it is therefore necessary to select one times of focal length to two times Jiao
Between away from, by calculating, when the diameter of convex lens is between 150-180mm, focal length is 140mm, the light between convex lens and TFT
Road distance for during 179mm just multiplication factor be 3.6 times, when distance change when, multiplication factor also can change therewith.
Function 2: while amplifying graph text information, realize the prolongation of light path too, this extends multiple and times magnification
Number is the same, is also to extend 3.6 times.
I.e. after using common convex lens to replace free form surface reflective mirror, achieve the amplification of free reflective mirror equally and prolong
The function of long light-path is completely suitable with free reflective mirror effect.
The graph text information that described single-chip microcomputer is transferred to TFT screen carries out predeformation by software, it is achieved offset front
The optical distortion that the optical considerations such as the curvature of wind glass is non-linear and optical path length is different produce, finally realizes that HUD shows.
It is common convex lens due to select, therefore cannot realize free form surface reflective mirror equally by way of optics
Optical path distortion is corrected, therefore this patent is carried out reversely by the graph text information that TFT is shown by the software in single-chip microcomputer
The graph text information that calibration, i.e. TFT show is one and distorts in advance according to the parameter of storage, the direction of this distortion and front
Wind glass curvature and optical path length is different and the distortion effect that produces is completely contrary, just cancel each other, therefore realize driving
The virtual image that member observes is exactly distortionless graph text information.
Being designed with regulatory function on auto navigation to select, being set as a high position, middle position and the low level of sitting posture, driver is selected to close
After the sitting posture position of suitable height, the information that driver is selected by navigation sends single-chip microcomputer to.
The distance that camera position is heightened or turned down is 40mm.
Outside the conventional driver eye positions of design is corrected, also each up and down 40mm position of this position is carried out
Correction, respectively obtains correction parameter, and driver selectes the sitting posture position of suitable height as final display correction parameter.
This patent uses common convex lens to realize HUD display function, realizes HUD function with using free form surface reflective mirror
Vehicle is compared, with the obvious advantage, mainly as follows:
1st, the mould difficulty of processing of free form surface reflective mirror is big, and requirement on machining accuracy is high.Due to free form surface reflective mirror pair
Requirement on machining accuracy is high, and therefore difficulty of processing is big, and due to the concave of curved mirror, the therefore processing to mould also carries
Go out very high requirement.And less demanding to mould of common convex lens, use common equipment just can machine, use general
Logical equipment just can realize mold polish.Plus this patent is install HUD after just use software correction, therefore convex lens
Deformation and error all can be eliminated by software, so the Mold Making of convex lens is easy.
2nd, due to free form surface reflective mirror light path to be realized deformity correction function, therefore its deformation and reflecting rate etc. are referred to
Mark requires very high, and due to material behavior, returning to normal condition after high temperature process has certain shrinkage factor, and this can cause producing
Yields is low, and production cost is high.And owing to the concave surface of concave mirror is not easy to polishing, cause the defective products produced not weigh
Reuse after new polishing, also result in production yields low.This patent uses and after installing HUD, just uses software school
Just, it is possible to achieve offset the bad problem such as convex lens deformation, less demanding to convex lens, and convex lens defective products is all right
Again polishing is remedied, and the yields of production is greatly improved, and reduces production cost.
3rd, owing to the Curvature varying result of free form surface reflective mirror and front windshield needs to cancel out each other, then to front windshield
The precision of glass and deformation, it is also proposed that very high requirement, if going beyond the scope, also resulting in graph text information and substantially distorting, therefore also
The manufacturing cost that can cause glass is substantially increased.This patent is install HUD after just use software correction, for glass system
Deformation during making requires significantly to relax, and also reduces the requirement of front windshield assembly precision.
Brief description
Fig. 1 is the principle schematic of the HUD display system light path of BMW
Fig. 2 is the principle schematic of light path of the present invention
Fig. 3 is that the present invention debugs process schematic
Wherein the front windshield 6 of eyes 5 automobile of 1TFT screen 2 plane mirror 3 free form surface reflective mirror 4 driver is convex
Lens 7 single-chip microcomputer 8 camera.
Detailed description of the invention
Being described in detail this patent below, described embodiment can make professional and technical personnel more understand this
Patent, and it is easily achieved same function.
As shown in Figure 2,3, a kind of automobile using convex lens head-up display system, with existing HUD display system
Identical, it is all the cassette part that it is made up of shell and internal optics and electronic component, be fixed on the sight line of driver
Below the instrument desk in dead ahead, driver is to enter line parameter by auto navigation to HUD to arrange, the ginseng that will set of then navigating
The single-chip microcomputer 7 that number is passed in HUD uses.Except that it replaces the big free form surface reflective mirror of difficulty of processing with convex lens 6,
Concrete inner member includes single-chip microcomputer the 7th, TFT screen the 1st, plane mirror the 2nd, convex lens 6, and teletext transmission is given by single-chip microcomputer 7
TFT screen 1, the graph text information order that TFT screen 1 sends is projected the front windshield of automobile by plane mirror the 2nd, convex lens 6,
Being designed with debugging joint on shell, the other end of debugging joint is connected with single-chip microcomputer 7.Select common biconvex lens, convex lens
Diameter between 150-180mm, focal length is between 140-180mm, if focal length is too short, curvature is big, it is not easy to processing, burnt
Needing farther distance away from oversize then same multiplication factor, the volume causing product is excessive, becomes real image owing to amplify, because of
This must select between one times of focal length to two times focal length, by calculating, when the diameter of convex lens is between 150-180mm, and focal length
For 140mm, when the optical path distance between convex lens and TFT is 179mm, just multiplication factor is 3.6 times, when distance changes, puts
Big multiple also can change therewith.
The present invention is to realize, by convex lens, the function that the amplification of TFT graph text information and light path extend, by software to TFT
The predeformation of display graph text information, optic aberrance revising.
The graph text information that described single-chip microcomputer 7 is transferred to TFT screen 1 carries out predeformation by software, it is achieved before counteracting
The optical distortion that the optical considerations such as the curvature of windshield is non-linear and optical path length is different produce, finally realizes that HUD shows.
It is common convex lens due to select, therefore cannot realize free form surface reflective mirror optic aberrance revising, therefore
Carrying out reverse calibration by the software in single-chip microcomputer 7 to the graph text information sending in this patent, therefore in TFT, the picture and text of display are believed
Breath is to be graph text information through carrying out reverse calibration, i.e. the graph text information that TFT shows is a parameter according to storage
Distorting in advance, direction of this distortion is different with front windshield curvature and optical path length and that produce distortion effect is complete
Complete contrary, just cancel each other, therefore realize that the virtual image that driver observes is exactly distortionless graph text information.
The graph text information that described single-chip microcomputer 7 is transferred to TFT screen 1 carries out predeformation by software, and it debugs process
For as shown in Figure 3: 1. when overall vehicle rolls off the production line, the position of driver's eyes place a camera 8, and by camera with
Debugging joint connects, so that camera is connected with single-chip microcomputer 7, single-chip microcomputer 7 enters the vertical lopsided school of distortion correction pattern-2.
N-3. graph text information is plus the graph text information that correction parameter-4. contrast camera shoots and the graph text information sending, it is judged that shooting
Whether graph text information distort-5., then revise correction parameter repeat step 3., 4., 5. until graph text information is undistorted, shown
Become vertical deformity correction, continue the figure plus correction parameter-8. contrast camera shooting for the graph text information of 6. horizontal deformity correction-7.
Literary composition information and the graph text information sending, it is judged that whether shooting graph text information distort-be 9. then revise correction parameter repeat step 7.,
8., 9. until graph text information is undistorted, show to complete horizontal deformity correction, now graph text information is carried out in advance by single-chip microcomputer 7
The parameter that distortion is processed is exactly the reverse correction parameter of the optical distortion of this automobile.
Also horizontal deformity correction can first be carried out.
Being designed with regulatory function on auto navigation to select, being set as a high position, middle position and the low level of sitting posture, driver selectes
After the sitting posture position of suitable height, the information that driver is selected by navigation sends single-chip microcomputer 7 to.
In order to adapt to the height of different driver, senior middle school's low level of the sitting posture possible to driver respectively when calibration is divided equally
Do not calibrate.
The distance that camera position is heightened or turned down is 40mm.
Outside the conventional driver eye positions of design is corrected, also each up and down 40mm position of this position is carried out
Correction, respectively obtains correction parameter, and driver selectes the sitting posture position of suitable height as final display correction parameter.
The graph text information that above-mentioned vertical deformity correction is used is the chequered with black and white striped graph text information of level, and level is abnormal
The used graph text information of shape correction is vertically chequered with black and white striped graph text information.
Claims (5)
1. the automobile using a convex lens head-up display system, it is by shell and internal optics and electric component group
The cassette part becoming, driver is that line parameter setting is entered in the navigation by automobile, then navigates and relevant parameter is passed to list
Piece machine (7), it is characterised in that its inner member includes single-chip microcomputer (7), TFT screen (1), plane mirror (2), convex lens (6),
Teletext transmission is passed through plane mirror to TFT screen (1), the graph text information order that TFT screen (1) sends by single-chip microcomputer (7)
(2), convex lens (6) project the front windshield of automobile, and shell is designed with debugging joint, debugging joint and single-chip microcomputer
(7) it is connected.
2. a kind of automobile using convex lens head-up display system according to claim 1, it is characterised in that select
Biconvex lens, the diameter of convex lens is between 150 ~ 180mm, and focal length is between 140-180mm.
3. a kind of automobile using convex lens head-up display system according to claim 2, it is characterised in that select
Biconvex lens, when the diameter of convex lens is between 150 ~ 180mm, focal length is 140mm, the light path between convex lens and TFT away from
From for during 179mm just multiplication factor be 3.6 times.
4. a kind of automobile using convex lens head-up display system according to claim 1, it is characterised in that automobile
Being designed with regulatory function in navigation to select, being set as a high position, middle position and the low level of sitting posture, driver selectes the seat of suitable height
After appearance position, the information that driver is selected by navigation sends single-chip microcomputer (7) to.
5. a kind of automobile using convex lens head-up display system according to claim 4, it is characterised in that drive
The difference in height that the height and position of member's eyes is divided between high, normal, basic third gear is 40mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620370015.1U CN205679855U (en) | 2016-04-28 | 2016-04-28 | Use the automobile head-up display system of convex lens |
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| CN201620370015.1U CN205679855U (en) | 2016-04-28 | 2016-04-28 | Use the automobile head-up display system of convex lens |
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| CN205679855U true CN205679855U (en) | 2016-11-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717646A (en) * | 2016-04-28 | 2016-06-29 | 泉州市名品电子科技有限公司 | Automotive head-up display (HUD) system adopting common convex lens |
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- 2016-04-28 CN CN201620370015.1U patent/CN205679855U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717646A (en) * | 2016-04-28 | 2016-06-29 | 泉州市名品电子科技有限公司 | Automotive head-up display (HUD) system adopting common convex lens |
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Address after: 362000 Quanzhou economic and Technological Development Zone, Fujian, Qing Meng Park Road, No. 1 Patentee after: Quanzhou famous electronic Limited by Share Ltd Address before: 362000 Quanzhou economic and Technological Development Zone, Quanzhou, Qing Meng Park Road, No. 1, No. Patentee before: QUANZHOU MINGPIN ELECTRONICS TECHNOLOGY CO., LTD. |