CN105717646A - Automotive head-up display (HUD) system adopting common convex lens - Google Patents
Automotive head-up display (HUD) system adopting common convex lens Download PDFInfo
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- CN105717646A CN105717646A CN201610271636.9A CN201610271636A CN105717646A CN 105717646 A CN105717646 A CN 105717646A CN 201610271636 A CN201610271636 A CN 201610271636A CN 105717646 A CN105717646 A CN 105717646A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/011—Head-up displays characterised by optical features comprising device for correcting geometrical aberrations, distortion
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0138—Head-up displays characterised by optical features comprising image capture systems, e.g. camera
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/014—Head-up displays characterised by optical features comprising information/image processing systems
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Abstract
The invention relates to an automotive head-up display (HUD) system adopting a common convex lens. The automotive HUD system is one box-type component composed of a shell and internal optical and electronic components. A driver carries out parameter setting on the HUD by virtue of automobile navigation and then navigates and transmits the set parameters to a singlechip in the HUD to be used. The automotive HUD system is characterized in that the internal components of the system comprise a singlechip, a TFT screen, a planar reflector and a convex lens, the singlechip transmits image text information to the TFT screen, image text information sent by the TFT screen is projected to front windshield of an automobile by virtue of the planar reflector and the convex lens sequentially, a debugging contact is designed on the shell, and the debugging contact is connected with the singlechip. The automotive HUD system provided by the invention is easy to manufacture, production yield can be beneficially improved, production cost is reduced, deformation requirement in a front windshield manufacturing process can be greatly lowered, and front windshield assembling accuracy requirement is also lowered.
Description
Technical field
This patent belongs to auto parts machinery, especially belongs to automobile head up display (HUD) display system.
Background technology
Head up displays (HeadUpDisplay), hereinafter referred to as HUD, the part middle and high end vehicle of volume production all shows function with HUD, can the graph text information such as speed and navigation be projected on front windshield, HUD is carried out parameter setting by auto navigation by driver, and the single-chip microcomputer 4 passing in HUD by the parameter set that then navigates uses.Such as the HUD display system of BMW, the cassette part that it is made up of shell and internal optics and electronic component, it is fixed on below the instrument desk of sight line dead ahead of driver.For the ease of describing, the inside light path of BMW HUD and image-forming principle 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, for the graph text information such as display speed and navigation；2 is plane mirror, the content shown is reflexed in free form surface illuminator 3 in TFT, and purpose is for increasing optical path length.In whole HUD 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 that the virtual image is the front at front windshield, the light path of HUD is more long, then driver can feel the virtual image can from front windshield more away from.So the purpose increasing plane mirror is just to increase the length of light path；3 is free form surface illuminator, for the core component of HUD light path；5 is the front windshield of automobile, as the ingredient of light path, the light of HUD reflexes to the eyes of driver；4 is the eyes of driver, and namely driver is it is observed that the graph text information that shows of HUD and information, and driver will be considered that this is the virtual image being shown in front windshield front.
Free form surface illuminator 3, its function is described in detail as follows:
Function 1: this illuminator has certain curvature, it it is the illuminator of a concave surface, there is the effect of amplification, the TFT specification of BMW HUD is 2.2 inches, but driver observe amplification after graph text information be about 7.9 inches, amplification is about 3.6 times, and this enlarging function is realized by free form surface illuminator exactly.
Function 2: while amplifying graph text information, it is also equivalent to increase the length of light path, the length increased is identical with amplification, here image amplifies 3.6 times, also correspond to light path is extended 3.6 times, therefore only total light path of 0.47 meter long originally, 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 the Curvature varying in each position of viewing area all differs, so can cause that normal graph text information can produce distortion, therefore free form surface illuminator is under the premise keeping graph text information enlarging function, the distortion that the front windshield in viewing area Curvature varying in viewing area must produce graph text information carries out Contrary compensation, for offsetting the optical distortion that front windshield produces.
Function 4: owing to TFT display screen is smaller, only 2.2 inches, graph text information after amplification is 7.9 inches, and light path also has the existence of illuminator and front windshield, therefore cause showing that the optical path length that position reflexes to driver's eyes to front windshield is different from TFT difference, also also result in graph text information to be distorted, in HUD, be also by free form surface illuminator correct and offset optical path length is different and the distortion that produces.
In BMW HUD, owing to being dependent on free form surface illuminator, the different distortion of front windshield curvature and optical path length is corrected, therefore it is necessary for the HUD internal structure for a certain vehicle when designing free form surface illuminator, HUD installation site, the factors such as the position of front windshield viewing area and shape are customized, the designing requirement of free form surface illuminator is high, the HUD using free form surface illuminator must be that special train is special, if being installed to different vehicles, or the moulding of vehicle change front windshield, then the free form surface illuminator of HUD must redesign, therefore HUD main frame cannot be general.In uncurrent situation, also that the requirement with the foozle and rigging error of light path associated components is strict, if bigger error, may result in the problems such as graph text information distortion and occur.
Owing to free form surface illuminator is high to requirement on machining accuracy, therefore difficulty of processing is big, and due to the concave of curved mirror, therefore to the processing of mould it is also proposed that significantly high requirement；Owing to free form surface illuminator to realize light path deformity correction function, therefore the index requests such as its deformation and reflecting rate is significantly high, due to material behavior, returning to normal condition after high temperature process has certain shrinkage factor, it is low that this can cause producing yields, and production cost is high.Owing to the Curvature varying result of free form surface illuminator with front windshield needs to cancel out each other, then to the precision of front windshield and deformation it is also proposed that significantly 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 is substantially increased.
Summary of the invention
This patent aims to overcome that the shortcoming that difficulty of processing is big, production cost is high in the HUD display system of current automobile because using free form surface illuminator to cause, it is provided that the automobile head up displays system using common convex lens that a kind of handling ease, production cost are low.
The technical solution adopted in the present invention is a kind of automobile head up displays system using common convex lens, the cassette part that it is made up of shell and internal optics and electronic component, HUD is carried out parameter setting by auto navigation by driver, then the single-chip microcomputer passing in HUD by the parameter set 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 projects the front windshield of automobile, on shell, design has debugging joint, being connected with single-chip microcomputer of debugging joint.
The present invention improves in existing head up displays system-based, shell is similar to prior art to electronic system, utilizing common convex lens to replace free form surface illuminator, have handling ease, production cost low, common convex lens replaces the replacement principle after free form surface illuminator 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, and by adjusting the distance between convex lens and TFT and plane mirror, it is achieved the effect of amplification, and amplification can be adjusted as required.In the HUD that this patent realizes, select common biconvex lens, the diameter of convex lens is between 150-180mm, focal length is between 140-180mm, if focal length is too short, curvature is big, it is not easy processing, the oversize then same amplification of focal length needs farther distance, cause that the volume of HUD is excessive, owing to becoming real image in amplification, therefore 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, focal length is 140mm, when optical path distance between convex lens and TFT is 179mm, just amplification is 3.6 times, when distance changes, amplification can also change therewith.
Function 2: while amplifying graph text information, realize the prolongation of light path too, this extends multiple is the same with amplification, is also extend 3.6 times.
Namely, after using common convex lens to replace free form surface illuminator, achieve the amplification of free illuminator equally and extend the function of light path, completely suitable with free illuminator effect.
Described single-chip microcomputer is transferred to the graph text information of TFT screen and carries out predeformation by software, it is achieved offsets the optical distortion that the optical considerations such as the curvature of front windshield is non-linear and optical path length is different produce, finally realizes HUD and show.
It is common convex lens due to what select, therefore cannot realize free form surface illuminator equally by the mode of optics, optical path distortion to be corrected, therefore the graph text information by the software in single-chip microcomputer, TFT shown in this patent carries out reverse calibration, namely the graph text information that TFT shows is that a parameter according to storage distorts in advance, the direction of this distortion is different with front windshield curvature and optical path length and that produce distortion effect is completely contrary, just cancel each other, therefore realize the virtual image that driver observes and be exactly distortionless graph text information.
Described single-chip microcomputer is transferred to the graph text information of TFT screen and carries out predeformation by software, its debugging process is for 1. when overall vehicle rolls off the production line, a photographic head is placed in the position of driver's eyes, and photographic head is connected with debugging joint, so that photographic head is connected with single-chip microcomputer, single-chip microcomputer enters the graph text information of the vertical deformity correction of distortion correction pattern-2.-3. plus the graph text information of correction parameter-4. contrast photographic head shooting and the graph text information sent, judge shooting graph text information whether distort-be 5., then revise correction parameter and repeat step 3., 4., 5. until graph text information is undistorted, show vertical deformity correction, continue the 6. graph text information of horizontal deformity correction-7. plus the graph text information of correction parameter-8. contrast photographic head shooting and the graph text information sent, judge shooting graph text information whether distort-be 9. then revise correction parameter repeat step 7., 8., 9. until graph text information is undistorted, show horizontal deformity correction, graph text information is now carried out the reverse correction parameter of optical distortion that the parameter that distortion in advance processes is exactly this automobile by single-chip microcomputer.
First Uprightness adjusting deformity correction or horizontal deformity correction indistinction in debugging process, can.
Described single-chip microcomputer is transferred to the graph text information of TFT screen and carries out predeformation by software, its debugging process is for 1. when overall vehicle rolls off the production line, a photographic head is placed in the position of driver's eyes, and photographic head is connected with debugging joint, so that photographic head is connected with single-chip microcomputer, single-chip microcomputer enters the graph text information of the horizontal deformity correction of distortion correction pattern-2.-3. plus the graph text information of correction parameter-4. contrast photographic head shooting and the graph text information sent, judge shooting graph text information whether distort-be 5., then revise correction parameter and repeat step 3., 4., 5. until graph text information is undistorted, show horizontal deformity correction, 6. the graph text information of vertical deformity correction-7. is plus the graph text information of correction parameter-8. contrast photographic head shooting and the graph text information sent, judge shooting graph text information whether distort-be 9., then revise correction parameter and repeat step 7., 8., 9. until graph text information is undistorted, show vertical deformity correction, continue graph text information is carried out by now single-chip microcomputer the reverse correction parameter that the parameter that distortion in advance processes is exactly the optical distortion of this automobile.
On auto navigation, design has regulatory function to select, and is set as a high position for sitting posture, middle position and low level, and after driver selectes the sitting posture position of suitable height, the information that driver is selected by navigation sends single-chip microcomputer to.
In order to adapt to the height of different driver, respectively senior middle school's low level of the possible sitting posture of driver is calibrated respectively when calibration.
Single-chip microcomputer is transferred to the graph text information of TFT screen and carries out predeformation by software, its debugging process is for 1. when overall vehicle rolls off the production line, a photographic head is placed in the position of driver's eyes, and photographic head is connected with debugging joint, so that photographic head is connected with single-chip microcomputer, single-chip microcomputer enters the graph text information of the vertical deformity correction of distortion correction pattern-2.-3. plus the graph text information of correction parameter-4. contrast photographic head shooting and the graph text information sent, judge shooting graph text information whether distort-5., then revise correction parameter repeat step 3., 4., 5. until graph text information is undistorted, show vertical deformity correction, continue the 6. graph text information of horizontal deformity correction-7. plus the graph text information of correction parameter-8. contrast photographic head shooting and the graph text information sent, it is judged that whether shooting graph text information distort-and 9. it is then revise correction parameter to repeat step 7., 8., 9. until graph text information is undistorted, it was shown that complete horizontal deformity correction, the parameter that graph text information now carries out in single-chip microcomputer the process of distortion in advance is exactly the reverse correction parameter of the optical distortion of position sitting posture in this car corresponding, is heightened by camera position, repeats 2., 3., 4., 5., 6., 7., 8., 9. set-up procedure is until qualified, graph text information now carries out in single-chip microcomputer (7) the reverse correction parameter that the parameter that distortion in advance processes is exactly the optical distortion of corresponding this overall height position sitting posture, is turned down by camera position, repeat 2., 3., 4., 5., 6., 7., 8., 9. set-up procedure is until qualified, and graph text information now carries out in single-chip microcomputer (7) the reverse correction parameter that the parameter that distortion in advance processes is exactly the optical distortion of corresponding this car low level sitting posture.
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 being corrected, respectively obtain correction parameter, driver selectes the sitting posture position of suitable height as final display correction parameter.
The graph text information that described vertical deformity correction uses is the striped graph text information that level is chequered with black and white, and the graph text information that described horizontal deformity correction uses is vertically chequered with black and white striped graph text information.
This patent uses common convex lens to realize HUD display function, compared with the vehicle that use free form surface illuminator realizes HUD function, with the obvious advantage, mainly as follows:
1, the mould difficulty of processing of free form surface illuminator is big, and requirement on machining accuracy is high.Owing to free form surface illuminator is high to requirement on machining accuracy, therefore difficulty of processing is big, and due to the concave of curved mirror, therefore to the processing of mould it is also proposed that significantly high requirement.And less demanding to mould of common convex lens, use common equipment just can machine, use conventional equipment just can realize mold polish.Plus this patent is install HUD after just use software correction, therefore the deformation of convex lens and error all can be eliminated by software, so the Mold Making of convex lens is easy.
2, owing to free form surface illuminator to realize light path deformity correction function, therefore the index requests such as its deformation and reflecting rate is significantly high, due to material behavior, returning to normal condition after high temperature process has certain shrinkage factor, it is low that this can cause producing yields, and production cost is high.And owing to the concave surface of concave mirror is not easy to polishing, cause that the defective products produced can not reuse after again polishing, also result in production yields low.This patent uses and after installing HUD, just uses software correction, can realize offsetting the bad problem such as convex lens deformation, less demanding to convex lens, and convex lens defective products can also again polish and remedy, the yields of production is greatly improved, reduces production cost.
3, owing to the Curvature varying result of free form surface illuminator with front windshield needs to cancel out each other, then to the precision of front windshield and deformation it is also proposed that significantly high requirement, if going beyond the scope, also resulting in graph text information and substantially distorting, the manufacturing cost therefore also resulting in glass is substantially increased.This patent is install HUD after just use software correction, the deformation in glass manufacturing process is required significantly to relax, and also reduces the requirement of front windshield assembly precision.
Accompanying drawing explanation
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
Fig. 4 is the block diagram that the present invention debugs process
Wherein front windshield 6 convex lens 7 single-chip microcomputer 8 photographic head of eyes 5 automobile of 1TFT screen 2 plane mirror 3 free form surface illuminator 4 driver.
Detailed description of the invention
Below this patent being described in detail, described embodiment can make professional and technical personnel more understand this patent, and is easily achieved same function.
As shown in Figure 2,3, 4, a kind of automobile head up displays system using common convex lens, identical with existing HUD display system, the cassette part that to be all it be made up of shell and internal optics and electronic component, it is fixed on below the instrument desk of sight line dead ahead of driver, HUD is carried out parameter setting by auto navigation by driver, and the single-chip microcomputer 7 passing in HUD by the parameter set that then navigates uses.The difference is that it replaces, with convex lens 6, the free form surface illuminator that difficulty of processing is big, concrete inner member includes single-chip microcomputer 7, TFT screen 1, plane mirror 2, convex lens 6, single-chip microcomputer 7 by teletext transmission to TFT screen 1, the graph text information order that TFT screen 1 sends projects the front windshield of automobile by plane mirror 2, convex lens 6, on shell, design has debugging joint, and the other end of debugging joint is connected with single-chip microcomputer 7.Select common biconvex lens, the diameter of convex lens is between 150-180mm, focal length is between 140-180mm, if focal length is too short, curvature is big, it is not easy processing, the oversize then same amplification of focal length needs farther distance, cause that the volume of product is excessive, real image is become owing to amplify, therefore 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, focal length is 140mm, when optical path distance between convex lens and TFT is 179mm, just amplification is 3.6 times, when distance changes, amplification can also change therewith.
The present invention is the function of amplification and the light path prolongation being realized TFT graph text information by convex lens, and TFT is shown the predeformation of graph text information, optic aberrance revising by software.
Described single-chip microcomputer 7 is transferred to the graph text information of TFT screen 1 and carries out predeformation by software, it is achieved offsets the optical distortion that the optical considerations such as the curvature of front windshield is non-linear and optical path length is different produce, finally realizes HUD and show.
It is common convex lens due to what select, therefore free form surface illuminator optic aberrance revising cannot be realized, therefore this patent passes through the graph text information to sending of the software in single-chip microcomputer 7 and carries out reverse calibration, therefore in TFT, the graph text information of display is to be graph text information through carrying out reverse calibration, namely the graph text information that TFT shows is that a parameter according to storage distorts in advance, the direction of this distortion is different with front windshield curvature and optical path length and that produce distortion effect is completely contrary, just cancel each other, therefore realize the virtual image that driver observes and be exactly distortionless graph text information.
Described single-chip microcomputer 7 is transferred to the graph text information of TFT screen 1 and carries out predeformation by software, its debugging process is such as Fig. 3, shown in 4: 1. when overall vehicle rolls off the production line, a photographic head 8 is placed in the position of driver's eyes, and photographic head is connected with debugging joint, so that photographic head is connected with single-chip microcomputer 7, single-chip microcomputer 7 enters the graph text information of the vertical deformity correction of distortion correction pattern-2.-3. plus the graph text information of correction parameter-4. contrast photographic head shooting and the graph text information sent, judge shooting graph text information whether distort-be 5., then revise correction parameter and repeat step 3., 4., 5. until graph text information is undistorted, show vertical deformity correction, continue the 6. graph text information of horizontal deformity correction-7. plus the graph text information of correction parameter-8. contrast photographic head shooting and the graph text information sent, judge shooting graph text information whether distort-be 9. then revise correction parameter repeat step 7., 8., 9. until graph text information is undistorted, show horizontal deformity correction, graph text information is now carried out the reverse correction parameter of optical distortion that the parameter that distortion in advance processes is exactly this automobile by single-chip microcomputer 7.
Also horizontal deformity correction can first be carried out, namely described single-chip microcomputer 7 is transferred to the graph text information of TFT screen 1 and carries out predeformation by software, its debugging process is for 1. when overall vehicle rolls off the production line, a photographic head 8 is placed in the position of driver's eyes, and photographic head is connected with debugging joint, so that photographic head is connected with single-chip microcomputer 7, single-chip microcomputer 7 enters the graph text information of the horizontal deformity correction of distortion correction pattern-2.-3. plus the graph text information of correction parameter-4. contrast photographic head shooting and the graph text information sent, judge shooting graph text information whether distort-be 5., then revise correction parameter and repeat step 3., 4., 5. until graph text information is undistorted, show horizontal deformity correction, 6. the graph text information of vertical deformity correction-7. is plus the graph text information of correction parameter-8. contrast photographic head shooting and the graph text information sent, judge shooting graph text information whether distort-be 9., then revise correction parameter and repeat step 7., 8., 9. until graph text information is undistorted, show vertical deformity correction, continue graph text information is carried out by now single-chip microcomputer 7 the reverse correction parameter that the parameter that distortion in advance processes is exactly the optical distortion of this automobile.
On auto navigation, design has regulatory function to select, and is set as a high position for sitting posture, middle position and low level, and after driver selectes 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, respectively senior middle school's low level of the possible sitting posture of driver is calibrated respectively when calibration.
Single-chip microcomputer 7 is transferred to the graph text information of TFT screen 1 and carries out predeformation by software, its debugging process is for 1. when overall vehicle rolls off the production line, a photographic head 8 is placed in the position of driver's eyes, and photographic head is connected with debugging joint, so that photographic head is connected with single-chip microcomputer 7, single-chip microcomputer 7 enters the graph text information of the vertical deformity correction of distortion correction pattern-2.-3. plus the graph text information of correction parameter-4. contrast photographic head shooting and the graph text information sent, judge shooting graph text information whether distort-5., then revise correction parameter repeat step 3., 4., 5. until graph text information is undistorted, show vertical deformity correction, continue the 6. graph text information of horizontal deformity correction-7. plus the graph text information of correction parameter-8. contrast photographic head shooting and the graph text information sent, it is judged that whether shooting graph text information distort-and 9. it is then revise correction parameter to repeat step 7., 8., 9. until graph text information is undistorted, it was shown that complete horizontal deformity correction, the parameter that graph text information now carries out in single-chip microcomputer 7 process of distortion in advance is exactly the reverse correction parameter of the optical distortion of position sitting posture in this car corresponding, is heightened by camera position, repeats 2., 3., 4., 5., 6., 7., 8., 9. set-up procedure is until qualified, graph text information now carries out in single-chip microcomputer 7 the reverse correction parameter that the parameter that distortion in advance processes is exactly the optical distortion of corresponding this overall height position sitting posture, is turned down by camera position, repeat 2., 3., 4., 5., 6., 7., 8., 9. set-up procedure is until qualified, and graph text information now carries out in single-chip microcomputer 7 the reverse correction parameter that the parameter that distortion in advance processes is exactly the optical distortion of corresponding this car low level sitting posture.
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 being corrected, respectively obtain correction parameter, driver selectes the sitting posture position of suitable height as final display correction parameter.
The graph text information that above-mentioned vertical deformity correction uses is the striped graph text information that level is chequered with black and white, and the graph text information that horizontal deformity correction uses is vertically chequered with black and white striped graph text information.
Claims (9)
1. the automobile head up displays system using common convex lens, the cassette part that it is made up of shell and internal optics and electronic component, driver carries out parameter setting by the navigation of automobile, then navigate and relevant parameter is passed to single-chip microcomputer (7), it is characterized in that its inner member includes single-chip microcomputer (7), TFT screen (1), plane mirror (2), convex lens (6), single-chip microcomputer (7) by teletext transmission to TFT screen (1), the graph text information order that TFT screen (1) sends is by plane mirror (2), convex lens (6) projects the front windshield of automobile, on shell, design has debugging joint, being connected with single-chip microcomputer (7) of debugging joint.
2. a kind of automobile head up displays system using common convex lens according to claim 1, it is characterised in that selecting common biconvex lens, the diameter of convex lens is between 150 ~ 180mm, and focal length is between 140-180mm.
3. a kind of automobile head up displays system using common convex lens according to claim 2, it is characterized in that, select common biconvex lens, when the diameter of convex lens is between 150 ~ 180mm, focal length is 140mm, and when the optical path distance between convex lens and TFT is 179mm, just amplification is 3.6 times.
4. a kind of automobile head up displays system using common convex lens according to claim 1, it is characterized in that, on auto navigation, design has regulatory function to select, it is set as a high position for sitting posture, middle position and low level, after driver selectes the sitting posture position of suitable height, the information that driver is selected by navigation sends single-chip microcomputer (7) to.
5. a kind of automobile head up displays system using common convex lens according to claim 1, it is characterized in that described single-chip microcomputer (7) is transferred to the graph text information of TFT screen (1) and carries out predeformation by software, realize offsetting the graph text information distortion that the optical considerations such as the curvature of front windshield is non-linear and optical path length is different produce, finally realize HUD and show.
6. a kind of automobile head up displays system using common convex lens according to claim 1, it is characterized in that, described single-chip microcomputer (7) is transferred to the graph text information of TFT screen (1) and carries out predeformation by software, its debugging process is for 1. when overall vehicle rolls off the production line, a photographic head (8) is placed in the position of driver's eyes, and photographic head is connected with debugging joint, so that photographic head is connected with single-chip microcomputer (7), single-chip microcomputer (7) enters the graph text information of the vertical deformity correction of distortion correction pattern-2.-3. plus the graph text information of correction parameter-4. contrast photographic head shooting and the graph text information sent, judge shooting graph text information whether distort-be 5., then revise correction parameter and repeat step 3., 4., 5. until graph text information is undistorted, show vertical deformity correction, continue the 6. graph text information of horizontal deformity correction-7. plus the graph text information of correction parameter-8. contrast photographic head shooting and the graph text information sent, judge shooting graph text information whether distort-be 9. then revise correction parameter repeat step 7., 8., 9. until graph text information is undistorted, show horizontal deformity correction, graph text information is now carried out the reverse correction parameter of optical distortion that the parameter that distortion in advance processes is exactly this car by single-chip microcomputer (7).
7. a kind of automobile head up displays system using common convex lens according to claim 6, it is characterized in that, the graph text information that described vertical deformity correction uses is the striped graph text information that level is chequered with black and white, and the graph text information that described horizontal deformity correction uses is vertically chequered with black and white striped graph text information.
8. a kind of automobile head up displays system using common convex lens according to claim 4, it is characterized in that, in order to adapt to different height and the driver of different sitting posture, it is divided into high, normal, basic third gear to by the height possible position of driver's eyes, and it is calibrated respectively for this three file location, its debugging process is for 1. when overall vehicle rolls off the production line, a photographic head (8) is placed in the position of driver's eyes, and photographic head is connected with debugging joint, so that photographic head is connected with single-chip microcomputer (7), single-chip microcomputer (7) enters the graph text information of the vertical deformity correction of distortion correction pattern-2.-3. plus the graph text information of correction parameter-4. contrast photographic head shooting and the graph text information sent, judge shooting graph text information whether distort-be 5., then revise correction parameter and repeat step 3., 4., 5. until graph text information is undistorted, show vertical deformity correction, continue the 6. graph text information of horizontal deformity correction-7. plus the graph text information of correction parameter-8. contrast photographic head shooting and the graph text information sent, judge shooting graph text information whether distort-be 9. then revise correction parameter repeat step 7., 8., 9. until graph text information is undistorted, show horizontal deformity correction, the parameter that graph text information now carries out in single-chip microcomputer (7) process of distortion in advance is exactly the reverse correction parameter of the optical distortion of position sitting posture in this car corresponding, camera position is heightened, repeat 2., 3., 4., 5., 6., 7., 8., 9. set-up procedure is until qualified, graph text information is now carried out the reverse correction parameter that the parameter that distortion in advance processes is exactly the optical distortion of corresponding this overall height position sitting posture by single-chip microcomputer (7), camera position is turned down, repeat 2., 3., 4., 5., 6., 7., 8., 9. set-up procedure is until qualified, graph text information is now carried out the reverse correction parameter that the parameter that distortion in advance processes is exactly the optical distortion of corresponding this car low level sitting posture by single-chip microcomputer (7).
9. a kind of automobile head up displays system using common convex lens according to claim 8, it is characterised in that the height possible position of driver's eyes is divided into the difference in height between high, normal, basic third gear to be 40mm.
Priority Applications (1)
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