CN114563875A - AR-HUD and method for protecting display image source - Google Patents
AR-HUD and method for protecting display image source Download PDFInfo
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- CN114563875A CN114563875A CN202210320048.5A CN202210320048A CN114563875A CN 114563875 A CN114563875 A CN 114563875A CN 202210320048 A CN202210320048 A CN 202210320048A CN 114563875 A CN114563875 A CN 114563875A
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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
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
- G02B7/1821—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors for rotating or oscillating mirrors
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Abstract
The application provides an AR-HUD and a method for protecting a display image source, wherein the AR-HUD comprises the following steps: the display device comprises a display image source, a first reflector, a second reflector, at least one of a temperature sensor arranged on the first reflector and a light intensity sensor arranged on the second reflector; a temperature sensor for detecting a temperature of the first reflecting mirror; a light intensity sensor for detecting the light intensity of the ambient light irradiated onto the second reflecting mirror; when the AR-HUD comprises a temperature sensor, the AR-HUD acquires the temperature, and if the temperature is greater than or equal to a preset temperature, the second reflector is controlled to turn over by a preset angle; when AR-HUD includes light intensity sensor, AR-HUD acquires the luminous intensity, if luminous intensity is greater than or equal to and predetermines the luminous intensity, then control the second mirror upset and predetermine the angle, prevent that the environment light from reversely assembling and lead to showing the image source to damage on showing the image source.
Description
Technical Field
The application belongs to the technical field of automobiles, and particularly relates to an AR-HUD and a method for protecting a display image source.
Background
At present, a Head-Up Display (HUD) for a vehicle is turning from a Windshield type (WHUD) to an Augmented Reality type AR-HUD (Augmented Reality-Head Up Display), and the Display effect of the Head-Up Display changes from simple navigation, vehicle speed and other realistic displays into Augmented Reality displays capable of performing early warning and prompting in real time according to actual road conditions. Due to the display effect of the long-distance large view field of the AR-HUD, the risk problem of sunlight backflow is brought while extremely-intensive experience is brought to a user, and compared with the WHUD, the AR-HUD has larger magnification, so that the problem of sunlight backflow is abnormal and troublesome.
The sunshine problem of flowing backward indicates that external sunlight passes through the HUD light path, and the reverse assembles shows like source department at HUD, thereby can let the sunlight assemble the burning paper like the magnifying glass, and the curved mirror of HUD inside use is as long as magnification is big, can assemble the sunlight equally, destroys HUD's demonstration like source. The AR-HUD generally has an image source surface convergence temperature of more than 150 ℃, and a display image source TFT-LCD (Thin film transistor liquid crystal display) commonly used for the HUD at present has a tolerance temperature of 105 ℃; DLP (Digital Light Processing) is used as a display image source, and the tolerance temperature of a Diffuser (soft Light mirror) replacing a TFT-LCD position is only 140 ℃, which is far lower than the temperature when AR-HUD sun flows backwards, so that the image source is easily damaged by the backward flow of the sun.
The current solution is to replace the display image source, add the cold light film and the polarizing film, but the effect is always limited.
Disclosure of Invention
The embodiment of the application provides an AR-HUD and a method for protecting a display image source, and the problem that the display image source is damaged due to backward flowing of light can be solved.
In a first aspect, an embodiment of the present application provides an AR-HUD, including a display image source, a first reflecting mirror, a second reflecting mirror, and at least one of a temperature sensor disposed on the first reflecting mirror and a light intensity sensor disposed on the second reflecting mirror;
the first reflector is used for reflecting the target light rays emitted by the display image source to the second reflector;
the second reflector is used for reflecting the target light to a windshield arranged in a vehicle;
the temperature sensor is used for detecting the temperature of the first reflector;
the light intensity sensor is used for detecting the light intensity of the ambient light irradiated onto the second reflecting mirror;
when the AR-HUD comprises the temperature sensor, the AR-HUD acquires the temperature, and if the temperature is greater than or equal to a preset temperature, the second reflector is controlled to turn by a preset angle;
when the AR-HUD comprises the light intensity sensor, the AR-HUD acquires the light intensity, and if the light intensity is larger than or equal to the preset light intensity, the second reflecting mirror is controlled to overturn to preset an angle.
Optionally, when the AR-HUD includes the temperature sensor, the AR-HUD obtains the temperature, and if the temperature is less than the preset temperature, the second reflector is controlled to return to the initial position;
when the AR-HUD comprises the light intensity sensor, the AR-HUD acquires the light intensity, and if the light intensity is smaller than the preset light intensity, the second reflecting mirror is controlled to recover to the initial position.
Optionally, the light intensity sensor is disposed at an upper edge of the second reflector.
Optionally, the opening of the light intensity sensor is shaped like a horn.
Optionally, the temperature sensor is disposed in a center of a rear surface of the first reflector, and the rear surface is a surface of the first reflector away from the display image source.
Optionally, the AR-HUD further includes an optical filter, the optical filter is disposed between the display image source and the first reflector and forms a preset included angle with the surface of the display image source, and the target light passes through the optical filter.
In a second aspect, embodiments of the present application provide a method of protecting a display image source, the method using at least one of a temperature sensor and a light intensity sensor, the method comprising:
when the temperature sensor is arranged, the temperature of the first reflector is obtained through the temperature sensor, the temperature sensor is arranged on the first reflector, and the first reflector is used for reflecting target light rays emitted by a display image source to the second reflector;
if the temperature is greater than or equal to a preset temperature, controlling the second reflector to turn by a preset angle;
when a light intensity sensor is arranged, the light intensity of the ambient light irradiated on the second reflecting mirror is obtained through the light intensity sensor, the light intensity sensor is arranged on the second reflecting mirror, and the second reflecting mirror is used for reflecting the target light to a windshield arranged in a vehicle;
and if the light intensity is greater than or equal to the preset light intensity, controlling the second reflecting mirror to turn by a preset angle.
Optionally, after acquiring the temperature of the first reflecting mirror by the temperature sensor, the method further includes:
if the temperature is lower than the preset temperature, controlling the second reflector to recover to the initial position;
after the light intensity of the ambient light irradiated onto the second reflecting mirror is obtained by the light intensity sensor, the method further comprises the following steps:
and if the light intensity is smaller than the preset light intensity, controlling the second reflector to recover to the initial position.
It is understood that the beneficial effects of the second aspect can be referred to the related description of the first aspect, and are not described herein again.
Compared with the prior art, the embodiment of the application has the advantages that:
the display device comprises a display image source, a first reflector, a second reflector, at least one of a temperature sensor arranged on the first reflector and a light intensity sensor arranged on the second reflector; the first reflector is used for reflecting the target light rays emitted by the display image source to the second reflector; the second reflector is used for reflecting the target light to a windshield arranged in the vehicle; a temperature sensor for detecting a temperature of the first reflecting mirror; a light intensity sensor for detecting the light intensity of the ambient light irradiated onto the second reflecting mirror; when the AR-HUD comprises a temperature sensor, the AR-HUD acquires the temperature, and if the temperature is greater than or equal to a preset temperature, the second reflector is controlled to turn over by a preset angle; when AR-HUD includes light intensity sensor, AR-HUD acquires the luminous intensity, if luminous intensity is greater than or equal to and predetermines the luminous intensity, then control the second mirror upset and predetermine the angle. When the light intensity sensor is arranged and the light intensity of the ambient light on the second reflecting mirror is greater than or equal to the preset light intensity; when the temperature that is provided with temperature sensor and first speculum is greater than or equal to and predetermines the temperature, the angle is predetermine in the upset of control second speculum to can in time learn the surface temperature that shows the image source and be greater than or equal to temperature safety value, and in time change ambient light path direction in AR-HUD, prevent that the ambient light is reverse to assemble and lead to showing the image source to damage on showing the image source.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a first structure of an AR-HUD according to an embodiment of the present application;
FIG. 2 is a schematic diagram illustrating an operation of a light intensity sensor according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a second structure of an AR-HUD according to an embodiment of the present application;
FIG. 4 is a first flowchart illustrating a method for protecting a display image source according to an embodiment of the present application;
fig. 5 is a second flowchart illustrating a method for protecting a display image source according to an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to" determining "or" in response to detecting ". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
Furthermore, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless otherwise specifically stated.
The existing WHUD imaging system includes a display source, a first mirror, a second mirror, a dust guard, a windshield, a human eye, and a virtual image. Show the image of image source projection, through first speculum, second mirror and dust guard reflection to windshield's internal surface, final reflection gets into people's eye, forms the HUD virtual image of seeing. And the optical path structure of the AR-HUD is the same as that of the WHUD, except that the imaging distance is longer (the imaging distance is greater than 7m), and the viewing angle is larger (the viewing angle is greater than 8 degrees and 3 degrees).
The embodiment of the application provides an AR-HUD and a method for protecting a display image source, and aims to solve the problem that the display image source is damaged due to backward flowing of ambient light.
Fig. 1 is a schematic diagram of a first structure of an AR-HUD according to an embodiment of the present disclosure. By way of example and not limitation, as shown in FIG. 1, the AR-HUD includes a display image source 10, a first mirror 11, a second mirror 12, a temperature sensor 13 disposed on the first mirror 11, and a light intensity sensor 14 disposed on the second mirror 12.
The first reflector 11 is used for reflecting the target light emitted by the display image source 10 to the second reflector 12; the second reflecting mirror 12 is used to reflect the target light to a windshield 15 provided in the vehicle. The first reflector 11 may be a plane reflector or a curved reflector, and the surface of the curved reflector may be a cylindrical surface, a spherical surface, an aspherical surface or a free-form surface. The second reflector 12 may be a curved reflector, and the surface of the curved reflector may be aspheric or free-form.
The propagation direction of the target light emitted from the image source 10, i.e. the optical path direction of the AR-HUD image, is shown as a solid line 16 in fig. 1, and the solid line 16 is also the optical path direction of the backward flow of the ambient light.
And a temperature sensor 13 for detecting the temperature of the first reflecting mirror 11.
In application, the temperature sensor 13 is disposed at the center of the rear surface of the first mirror 11, which is the surface of the first mirror 11 away from the display image source 10. Based on the fact that the ambient light converged on the surface of the display image source 10 must be reflected by the first reflecting mirror, in this case, the center of the first reflecting mirror 11 must be irradiated by the ambient light, and the focusing power of the center is strong; and at the same time, cannot be disposed at the center of the front surface to avoid blocking ambient light, and thus the temperature sensor 13 is disposed at the center of the rear surface to accurately detect the temperature of the first reflecting mirror 11.
And a light intensity sensor 14 for detecting the light intensity of the ambient light irradiated onto the second reflecting mirror 12.
In application, the light intensity sensor 14 is disposed at the upper edge of the second reflecting mirror 12, which is the side of the second reflecting mirror 12 away from the image display source 10, so as to receive the ambient light incident on the second reflecting mirror 12 and accurately detect the light intensity of the ambient light incident on the second reflecting mirror 12.
When the AR-HUD comprises the temperature sensor 13, the AR-HUD acquires the temperature, and if the temperature is larger than or equal to the preset temperature, the second reflecting mirror 12 is controlled to turn over for a preset angle.
In the application, when ambient light flows backward, ambient light passes through the second mirror 12, first mirror 11 reflects to showing like source 10, thereby the temperature of first mirror 11 can represent the surface temperature who shows like source 10, temperature more than or equal to when first mirror 11 predetermines the temperature, the explanation shows like the surface temperature of source 10 and is more than or equal to the temperature safety value, there is the risk of damage, control second mirror 12 upset this moment predetermines the angle, in order to change the light path direction of ambient light, make ambient light not assemble on showing like source 10, avoid showing like source 10 and damage, thereby the protection shows like source 10.
When the AR-HUD comprises the light intensity sensor 14, the AR-HUD acquires light intensity, and if the light intensity is larger than or equal to preset light intensity, the second reflecting mirror 12 is controlled to turn over for a preset angle.
In using, when ambient light flows backward, ambient light passes through second mirror 12, first mirror 11 reflects to showing like source 10, thereby the luminous intensity of ambient light on the second mirror 12 can the representation show like source 10's surface temperature, predetermine the luminous intensity when luminous intensity is more than or equal to, the surface temperature that the explanation shows like source 10 is more than or equal to the temperature safety value, there is the risk of damage, the angle is predetermine in the upset of second mirror 12 this moment of control, in order to change the light path direction of ambient light, make ambient light not assemble on showing like source 10, avoid showing like source 10 and damage, thereby the protection shows like source 10.
When the AR-HUD is provided with the temperature sensor 13 and the light intensity sensor 14 at the same time, when one of the temperature and the light intensity is greater than or equal to the corresponding preset value, the second reflecting mirror 12 is controlled to turn over by the preset angle, so as to protect the display image source 10; and the temperature sensor 13 and the light intensity sensor 14 are arranged at the same time, so that the display image source 10 can be better protected. Of course, when the AR-HUD is provided with one of the temperature sensor 13 and the light intensity sensor 14, the display image source 10 can be protected by controlling the second reflecting mirror 12 to be turned over by a preset angle according to the temperature or the light intensity.
And the AR-HUD further comprises a dust-proof plate 17, the dust-proof plate 17 is arranged on one side of the second reflector 12 far away from the image source 10, and the target light reflected by the second reflector 12 penetrates through the dust-proof plate 17. In order to better protect the display image source 10, the dust-proof plate 17 may be made of a polarizing film or a transparent material, and when the polarizing film is made of a transparent material, the polarizing direction of the polarizing film is the same as the polarizing direction of the display image source 10, and the light transmittance is greater than 40%, and when the polarizing film is made of a transparent material, the light transmittance is greater than 90%.
The embodiment comprises a display image source, a first reflector, a second reflector, a temperature sensor arranged on the first reflector and a light intensity sensor arranged on the second reflector; the first reflector is used for reflecting the target light rays emitted by the display image source to the second reflector; the second reflector is used for reflecting the target light to a windshield arranged in the vehicle; a temperature sensor for detecting a temperature of the first reflecting mirror; a light intensity sensor for detecting the light intensity of the ambient light irradiated onto the second reflecting mirror; when the AR-HUD comprises a temperature sensor, the AR-HUD acquires the temperature, and if the temperature is greater than or equal to a preset temperature, the second reflector is controlled to turn over by a preset angle; when AR-HUD includes light intensity sensor, AR-HUD acquires the luminous intensity, if luminous intensity is greater than or equal to and predetermines the luminous intensity, then control the second mirror upset and predetermine the angle. When the light intensity sensor is arranged and the light intensity of the ambient light on the second reflecting mirror is greater than or equal to the preset light intensity; when the temperature that is provided with temperature sensor and first speculum is greater than or equal to and predetermines the temperature, the angle is predetermine in the upset of control second speculum to can in time learn the surface temperature that shows the image source and be greater than or equal to temperature safety value, and in time change ambient light path direction in AR-HUD, prevent that the ambient light is reverse to assemble and lead to showing the image source to damage on showing the image source.
In one embodiment, when the AR-HUD comprises a temperature sensor, the AR-HUD acquires the temperature, and if the temperature is lower than a preset temperature, the second reflecting mirror is controlled to return to the initial position.
In application, when the temperature is lower than the preset temperature, the fact that the surface temperature of the display image source does not exceed a temperature safety value and is free of damage risk is indicated, the second reflecting mirror is controlled to be restored to the initial position so as to restore the optical path direction of AR-HUD imaging, and therefore the AR-HUD can continue to work.
When AR-HUD includes light intensity sensor, AR-HUD acquires the luminous intensity, if the luminous intensity is less than predetermineeing the luminous intensity, then control the second mirror and resume to initial position.
In the application, when the light intensity is smaller than the preset light intensity, the fact that the surface temperature of the display image source does not exceed the temperature safety value and is free of damage risks is shown, the second reflecting mirror is controlled to be restored to the initial position at the moment, the light path direction of AR-HUD imaging is restored, and therefore the AR-HUD continues to work.
When AR-HUD set up temperature sensor and light intensity sensor simultaneously promptly, when temperature, luminous intensity one of them is less than its default that corresponds, just control the second mirror and resume to initial position to learn more in time that the surface temperature who shows like the source does not exceed the temperature safety value, does not have the risk of damage, thereby resume AR-HUD formation of image's light path direction more in time, make the user have good use and experience.
Fig. 2 is a schematic diagram illustrating an operation of the light intensity sensor according to an embodiment of the present application. As shown in fig. 2, the opening of the light intensity sensor 14 is shaped like a horn.
In application, the opening of the light intensity sensor 14 is in a horn shape, so that interference of other lights can be avoided, and by adjusting the opening direction of the light intensity sensor, the light intensity of the ambient light irradiated on the second reflecting mirror 12 is only detected under the condition that the light sensing surface of the light intensity sensor 14 receives the ambient light to the maximum extent. In fig. 2, the first region 18 is a region where the light intensity sensor 14 receives external environment light when the opening shape of the light intensity sensor 14 is a horn shape; the second area 19 is the area where the second mirror 12 receives ambient light. The solid upper edge line of the first area 18 is on the left side of the dashed upper edge line of the second area 19, and the solid lower edge line of the first area 18 is on the right side of the dashed lower edge line of the second area 19, so that the range of the first area 18 covers the range of the second area 19, and the ambient light in the first area 18 is substantially the same as the ambient light in the second area 19, that is, the light intensity detected by the light intensity sensor 14 is greater than or equal to the light intensity of the ambient light irradiated onto the second mirror 12.
FIG. 3 is a schematic diagram of a second structure of an AR-HUD according to an embodiment of the present application. As shown in fig. 3, the AR-HUD further includes a filter 20, the filter 20 is disposed between the display image source 10 and the first reflector 11 and forms a predetermined included angle with the surface of the display image source 10, and the target light passes through the filter 20.
In application, the filter 20 forms a predetermined angle with the surface of the display source 10, so as to avoid image ghosting formed on the windshield 15. The display image source 10 is protected by the filter 20, and in order to protect the display image source 10 more effectively, at least one of an infrared cut film and a polarizing film may be coated on the surface of the filter 20. The infrared cut-off film has a visible light transmittance of greater than 95% and an infrared light reflectance of greater than 95%, and is coated on the surface of the filter 20 away from the display image source 10; the polarization direction of the polarizing film is the same as the polarization direction of the display image source 10. If the infrared cut film is plated on the surface of the filter 20 and the polarizing film is attached, the polarizing film is attached to the surface of the filter 20 close to the display image source 10.
In one embodiment, in order to better protect the display image source, an infrared cut-off film may be further coated on the surface of the first reflector, and the infrared cut-off film has a visible light transmittance of greater than 95% and an infrared light reflectance of less than 3%. The surface of the second reflector can be plated with a high-reflection film, and the reflectivity of the high-reflection film is more than 95%.
Corresponding to the AR-HUD described in the above embodiments, only the portions related to the embodiments of the present application are shown for convenience of explanation.
Fig. 4 is a first flowchart illustrating a method for protecting a display image source according to an embodiment of the present application. By way of example and not limitation, the method is applied to an AR-HUD that includes a temperature sensor disposed on a first mirror and an optical intensity sensor disposed on a second mirror.
As shown in fig. 4, the method:
s11: when the temperature sensor is arranged, the temperature of the first reflector is obtained through the temperature sensor;
the temperature sensor is arranged on the first reflector, and the first reflector is used for reflecting target light rays emitted by the display image source to the second reflector;
s12: and if the temperature is greater than or equal to the preset temperature, controlling the second reflector to turn by a preset angle.
In application, a first corresponding relation between the temperature of the first reflector and the surface temperature of the display image source can be obtained in advance, and based on the first corresponding relation, the temperature of the first reflector corresponding to the temperature safety value and the surface temperature of the display image source are determined to be equal to obtain the preset temperature. And comparing the acquired temperature with a preset temperature every time, and controlling the second reflector to turn over by a preset angle when the temperature is greater than or equal to the preset temperature so as to protect the display image source.
S21: when the light intensity sensor is arranged, the light intensity of the ambient light irradiated on the second reflecting mirror is obtained through the light intensity sensor;
the light intensity sensor is arranged on the second reflector, and the second reflector is used for reflecting the target light to a windshield arranged in the vehicle;
s22: and if the light intensity is greater than or equal to the preset light intensity, controlling the second reflecting mirror to turn by a preset angle.
In application, a second corresponding relation between the light intensity of the ambient light irradiated on the second reflecting mirror and the surface temperature of the display image source can be obtained in advance, and based on the second corresponding relation, the light intensity corresponding to the temperature safety value and the surface temperature of the display image source are determined to be equal to obtain the preset light intensity. And when the light intensity is greater than or equal to the preset light intensity, controlling the second reflecting mirror to turn by a preset angle.
Wherein the value of the preset angle is greater than 17 °.
In the embodiment, when the temperature sensor is arranged, the temperature sensor acquires the temperature of the first reflector, the temperature sensor is arranged on the first reflector, and the first reflector is used for reflecting the target light emitted by the display image source to the second reflector; if the temperature is greater than or equal to the preset temperature, controlling the second reflecting mirror to turn by a preset angle; when the light intensity sensor is arranged, the light intensity of the ambient light irradiated on the second reflecting mirror is obtained through the light intensity sensor, the light intensity sensor is arranged on the second reflecting mirror, and the second reflecting mirror is used for reflecting the target light to a windshield arranged in the vehicle; and if the light intensity is greater than or equal to the preset light intensity, controlling the second reflecting mirror to turn by a preset angle. Learn the temperature of first speculum in real time through temperature sensor, and learn the luminous intensity of shining the ambient light on the second mirror in real time through light intensity sensor, when the temperature is greater than or equal to predetermine the temperature, or when the luminous intensity is greater than or equal to predetermine the luminous intensity, the angle is predetermine in the upset of control second mirror, with the surface temperature that can learn more in time to show the image source be greater than or equal to the temperature safety value, and change ambient light path direction in AR-HUD more in time, prevent that ambient light from reversely assembling and lead to showing the image source to damage on showing the image source.
Fig. 5 is a second flowchart illustrating a method for protecting a display image source according to an embodiment of the present application.
As shown in fig. 5, after step S12, the method further includes:
s13: and if the temperature is lower than the preset temperature, controlling the second reflector to recover to the initial position.
In the application, after the angle is predetermine in the upset of second mirror, obtain the temperature of first mirror through temperature sensor in real time, compare it with predetermineeing the temperature, when the temperature is less than and predetermines the temperature, control second mirror resumes to initial position to make AR-HUD continue work.
After step S22, the method further includes:
s23: and if the light intensity is less than the preset light intensity, controlling the second reflector to recover to the initial position.
In using, after the angle is predetermine in the upset of second mirror, obtain the luminous intensity of shining the ambient light on the second mirror through light intensity sensor in real time, compare it with predetermineeing the luminous intensity, when the luminous intensity is less than when predetermineeing the luminous intensity, control the second mirror and resume to initial position to make AR-HUD continue work.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
In the above embodiments, the description of each embodiment has its own emphasis, and reference may be made to the related description of other embodiments for parts that are not described or recited in any embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/network device and method may be implemented in other ways. For example, the above-described apparatus/network device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (8)
1. An AR-HUD is characterized by comprising a display image source, a first reflector, a second reflector, and at least one of a temperature sensor arranged on the first reflector and a light intensity sensor arranged on the second reflector;
the first reflector is used for reflecting the target light rays emitted by the display image source to the second reflector;
the second reflector is used for reflecting the target light to a windshield arranged in a vehicle;
the temperature sensor is used for detecting the temperature of the first reflector;
the light intensity sensor is used for detecting the light intensity of the ambient light irradiated on the second reflecting mirror;
when the AR-HUD comprises the temperature sensor, the AR-HUD acquires the temperature, and if the temperature is greater than or equal to a preset temperature, the second reflector is controlled to turn by a preset angle;
when the AR-HUD comprises the light intensity sensor, the AR-HUD acquires the light intensity, and if the light intensity is larger than or equal to the preset light intensity, the second reflecting mirror is controlled to overturn to preset an angle.
2. The AR-HUD of claim 1, wherein:
when the AR-HUD comprises the temperature sensor, the AR-HUD acquires the temperature, and if the temperature is lower than the preset temperature, the second reflector is controlled to be restored to the initial position;
when the AR-HUD comprises the light intensity sensor, the AR-HUD acquires the light intensity, and if the light intensity is smaller than the preset light intensity, the second reflecting mirror is controlled to recover to the initial position.
3. The AR-HUD of claim 1, wherein the light intensity sensor is disposed at an upper edge of the second mirror.
4. The AR-HUD of claim 1, wherein the opening of the light intensity sensor is shaped as a horn.
5. The AR-HUD of claim 1, wherein the temperature sensor is disposed in a center of a back surface of the first mirror, the back surface being a surface of the first mirror that is remote from the display image source.
6. The AR-HUD of claim 1, further comprising a filter disposed between the display image source and the first reflector and forming a predetermined angle with a surface of the display image source, wherein the target light passes through the filter.
7. A method of protecting a display image source, the method utilizing at least one of a temperature sensor and a light intensity sensor, the method comprising:
when the temperature sensor is arranged, the temperature of the first reflector is obtained through the temperature sensor, the temperature sensor is arranged on the first reflector, and the first reflector is used for reflecting target light rays emitted by a display image source to the second reflector;
if the temperature is greater than or equal to a preset temperature, controlling the second reflector to turn by a preset angle;
when a light intensity sensor is arranged, the light intensity of the ambient light irradiated on the second reflecting mirror is obtained through the light intensity sensor, the light intensity sensor is arranged on the second reflecting mirror, and the second reflecting mirror is used for reflecting the target light to a windshield arranged in a vehicle;
and if the light intensity is greater than or equal to the preset light intensity, controlling the second reflecting mirror to turn by a preset angle.
8. The method of claim 7, wherein after obtaining the temperature of the first mirror via the temperature sensor, further comprising:
if the temperature is lower than the preset temperature, controlling the second reflector to recover to the initial position;
after the light intensity of the ambient light irradiated onto the second reflecting mirror is obtained by the light intensity sensor, the method further comprises the following steps:
and if the light intensity is smaller than the preset light intensity, controlling the second reflector to recover to the initial position.
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Application publication date: 20220531 |