CN217879833U - Head-up display and vehicle - Google Patents
Head-up display and vehicle Download PDFInfo
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- CN217879833U CN217879833U CN202222000221.1U CN202222000221U CN217879833U CN 217879833 U CN217879833 U CN 217879833U CN 202222000221 U CN202222000221 U CN 202222000221U CN 217879833 U CN217879833 U CN 217879833U
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Abstract
The utility model provides a new line display and vehicle, including the image generation unit, the polarization beam split membrane, first reflection element and the dust mask that set gradually. The image generating unit is used for generating first light with image information, and the first light is first polarized light; the polarization beam splitting film is used for transmitting the first light to the first reflection unit; the first reflecting unit comprises at least one cold light mirror, and the cold light mirror is used for reflecting the first light to the dustproof film; the dustproof film is used for transmitting the first light; the cold light mirror is also used for transmitting infrared light in the second light transmitted by the dustproof film and reflecting non-infrared light in the second light to the polarization light splitting film; the polarization splitting film is used for reflecting second polarized light in the second light. In the head-up display, the second polarized light in the second light rays is reflected through the polarization light splitting film, and the second polarized light in the second light rays entering the image generation unit is reduced, so that the light energy entering the image generation unit is reduced, and the image generation unit is protected.
Description
Technical Field
The embodiment of the utility model provides a head-up display technical field, in particular to head-up display and vehicle are related to.
Background
A Head Up Display (HUD) is a driving assistance system, which can project important information such as speed per hour and navigation onto a windshield in front of a driver, so that the driver can see important driving information such as speed per hour and navigation without lowering or turning his Head as much as possible.
With the increase of the image display area of the head-up display, the magnification of the head-up display is higher and higher, the risk of sunlight flowing backwards is higher, and the sunlight energy is more concentrated on the image generation unit, so that the image generation unit is damaged. However, there is no new head-up display that can process the light entering the head-up display to reduce the damage to the image generating unit when the sunlight flows backward.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a main technical problem who solves provides a new line display and vehicle, can handle the inside light that gets into new line display, reduces the light energy who gets into the image generation unit to the reduction is to the damage of image generation unit, protects the image generation unit.
The utility model discloses a technical scheme that embodiment adopted is: there is provided a head up display including: the image generation unit, the polarization beam splitting film, the first reflection unit and the dustproof film are sequentially arranged along the first light path; the image generation unit is used for generating first light with image information, and the first light is first polarized light; the polarization beam splitting film is used for transmitting the first light to the first reflection unit; the first reflection unit comprises at least one cold light mirror, and the cold light mirror is used for reflecting the first light to the dustproof film; the dustproof film is used for transmitting the first light; the cold light mirror is also used for transmitting infrared light in second light rays transmitted by the dustproof film and reflecting non-infrared light in the second light rays to the polarization light splitting film; the polarization beam splitting film is used for reflecting second polarized light in the second light.
In some embodiments, the polarization splitting film is curved.
In some embodiments, the first reflecting unit further comprises at least one mirror.
In some embodiments, the at least one mirror comprises a first mirror, and the at least one cold mirror comprises a first cold mirror; the first cold light mirror and the first reflector are sequentially arranged between the polarization light splitting film and the dustproof film along the first light path.
In a second aspect, an embodiment of the present invention provides a vehicle, including a windshield and the head-up display according to any one of the first aspect; the dustproof film and the windshield glass are sequentially arranged along the first light path.
A third aspect of the present invention provides a head up display, which includes: the device comprises an image generation unit, a polarization beam splitting film, an infrared reflecting mirror, a second reflecting unit and a dustproof film which are arranged in sequence; the image generating unit is used for generating first light with image information, and the first light is first polarized light; the polarization beam splitting film is used for transmitting the first light to the infrared reflecting mirror; the infrared reflecting mirror is used for transmitting the first light to the second reflecting unit; the second reflection unit is used for reflecting the first light to the dustproof film; the dustproof film is used for transmitting the first light; the second reflection unit is also used for reflecting the second light rays transmitted by the dustproof film to the infrared reflection mirror; the infrared reflector is used for reflecting infrared light in the second light and transmitting non-infrared light in the second light to the polarization splitting film; the polarization splitting film is used for reflecting second polarized light in the second light rays.
In some embodiments, the polarization splitting film and the infrared mirror are each curved.
In some embodiments, the polarization splitting film is attached to the infrared mirror.
In some embodiments, the second reflecting unit includes at least one mirror.
In a fourth aspect, embodiments of the present invention provide a vehicle comprising a windshield and a heads up display as described in any of the fourth aspects; the windshield glass is arranged in the light-emitting direction of the dustproof film.
The utility model discloses embodiment's beneficial effect is: be different from prior art's condition, the embodiment of the utility model provides a new line display and vehicle, divide membrane, first reflecting unit and dust-proof membrane including image generation unit, the polarization that follows first light path setting in proper order. The image generation unit is used for generating first light with image information, and the first light is first polarized light; the polarization beam splitting film is used for transmitting the first light to the first reflection unit; the first reflecting unit comprises at least one cold light mirror, and the cold light mirror is used for reflecting the first light to the dustproof film; the dustproof film is used for transmitting the first light; the cold light mirror is also used for transmitting infrared light in the second light transmitted by the dustproof film and reflecting non-infrared light in the second light to the polarization light splitting film; the polarization splitting film is used for reflecting second polarized light in the second light rays. In the head-up display, the second polarized light in the second light rays is reflected out through the polarization beam splitting film, and the second polarized light in the second light rays entering the image generation unit is reduced, so that the light ray energy entering the image generation unit is reduced, and the image generation unit is protected; in addition, the cold light mirror is adopted to transmit the infrared light in the second light, so that the infrared light in the second light entering the image generation unit is reduced, the light energy entering the image generation unit is further reduced, and the image generation unit is further protected.
Drawings
One or more embodiments are illustrated by the accompanying figures in the drawings that correspond thereto and are not to be construed as limiting the embodiments, wherein elements/modules and steps having the same reference numerals are represented by like elements/modules and steps, unless otherwise specified, and the drawings are not to scale.
Fig. 1 is a schematic structural diagram of a head-up display according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the optical path of the second light ray in FIG. 1;
fig. 3 is a schematic structural diagram of another head-up display according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an optical path of the second light ray in fig. 3.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that numerous variations and modifications could be made by those skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
In order to facilitate an understanding of the present application, the present application is described in more detail below with reference to the accompanying drawings and specific embodiments. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that, if not conflicted, the various features of the embodiments of the invention can be combined with each other and are within the scope of protection of the present application. In addition, although the functional blocks are divided in the device diagram, in some cases, the blocks may be divided differently from those in the device. Further, the terms "first," "second," and the like, as used herein do not limit the data and the order of execution, but merely distinguish between the same or similar items that have substantially the same function and effect.
The embodiment of the utility model provides a new line Display, this new line Display uses Liquid Crystal Display (Liquid Crystal Display, LCD) as the new line Display of image generation unit, can avoid when strong sunshine pours backward into, LCD excess temperature inefficacy, in this new line Display, adopt cold light mirror to eliminate the infrared light, perhaps adopt polarization type dust-proof membrane to eliminate P polarized light, but under above-mentioned mode, though handle the inside light of entering new line Display, nevertheless the area of dust-proof membrane and cold light mirror is often great, cause the volume and the cost of new line Display to increase.
In order to solve the technical problem, the embodiment of the utility model provides a head-up display still provides, can handle the inside light that gets into the head-up display, reduces the damage to image generation unit to protect image generation unit, and can reduce the volume and the cost of head-up display.
In a first aspect, an embodiment of the present invention further provides a head-up display, please refer to fig. 1, the head-up display includes: the image generating unit 10, the polarization splitting film 20, the first reflecting unit 30, and the dustproof film 40 are sequentially disposed along the first optical path.
The image generating unit 10 is configured to generate a first light L1 with image information, where the first light L1 is a first polarized light. The polarization splitting film 20 is used for transmitting the first light L1 to the first reflection unit 30. The first reflection unit 30 includes at least one cold mirror (which may include 31) for reflecting the first light L1 to the dustproof film 40. The dustproof film 40 is used for transmitting the first light L1. The cold mirror is further configured to transmit the infrared light in the second light L2 transmitted through the dustproof film 40 and reflect the non-infrared light in the second light L2 to the polarization splitting film 20. The polarization splitting film 20 is used for reflecting the second polarized light in the second light L2.
Specifically, the image generating unit 10 includes an LCD, which can be used to emit the first light L1 with image information, and the first light L1 has a first polarization state, such as S-polarized light. The polarization splitting film 20 has polarization splitting characteristics, and can be used for transmitting the first polarized light and reflecting the second polarized light, such as transmitting S polarized light and reflecting P polarized light. The surface of the cold light mirror (which may include 31) is coated with an infrared transmission film, and the infrared transmission film enables the cold light mirror to transmit infrared light and reflect non-infrared light. The surface type of the cold mirror (which may include 31) may be flat or curved, so that the aberration can be corrected by designing the surface of the cold mirror so as to shape the second light L2. The dust-proof film 40 may be made of polymethyl methacrylate (PMMA), polycarbonate (PC) or other transparent materials, and may be used to transmit light and prevent dust, so as to prevent dust in the environment from entering the interior of the head-up display.
In the head-up display, the S polarized light generated by the image generating unit 10 is transmitted to the first reflecting unit 30 through the polarization splitting film 20, the first reflecting unit 30 reflects the S polarized light to the dustproof film 40, and finally, the S polarized light is transmitted through the dustproof film 40 and is subsequently applied to a vehicle, the S polarized light can enter human eyes 60 after being reflected by the windshield glass 50, and the human eyes 60 can observe image contents.
When sunlight flows backward, please refer to fig. 2, the external second light L2 is transmitted to the first reflection unit 30 through the dustproof film 40, and when the external second light L2 is reflected by the cold mirror (which may include 31) in the first reflection unit 30, the infrared light in the second light L2 is transmitted through the cold mirror (which may include 31) and cannot be continuously transmitted to the polarization splitting film 20, meanwhile, the non-infrared light in the second light L2 is reflected to the polarization splitting film 20 through the cold mirror (which may include 31), and then the P-polarized light in the second light L2 is reflected by the polarization splitting film 20 and cannot enter the image generation unit 10.
If the rate of infrared transmission film transmission infrared light in the cold light mirror is 100%, and the reflectivity of polarization beam splitting film 20 reflection P polarized light is when 100%, theoretically, only the S polarized light in the non-infrared light in second light L2 that finally gets into in image generation unit 10 compares in second light L2 directly flows backward and gets into in image generation unit 10, the embodiment of the utility model provides a new line display can when taking place sunshine and flow backward, handles second light L2, reduces the infrared light and the P polarized light in the second light that get into image generation unit 10, and the light energy that greatly reduced got into image generation unit 10 to reduce the damage to image generation unit 10, protection image generation unit 10. And the polarization splitting film 20 is disposed between the image generating unit 10 and the first reflecting unit 30, so that the small-sized polarization splitting film 20 can be used, thereby reducing the volume and cost of the heads-up display.
In order to avoid that the P-polarized light reflected by the polarization splitting film is focused at a certain position of the head-up display, for example, reflected to a certain position of the head-up display housing, in some embodiments, the polarization splitting film is in a curved shape. Specifically, referring to fig. 2, the polarization splitting film 20 may be in a cylindrical shape, and a concave side of the polarization splitting film faces the image generating unit 10, so that when the P-polarized light in the second light L2 is reflected, a divergence angle of the P-polarized light can be increased, so that the light is dispersed, and the P-polarized light reflected by the polarization splitting film 20 is prevented from being focused on a certain position to cause an excessively high local temperature, thereby ensuring that the head-up display can normally work.
In some of these embodiments, the first reflecting unit further comprises at least one mirror. Wherein, the reflector surface is plated with the high reflectivity membrane, and this high reflectivity membrane can be used to the reflection ray. For example, the mirror may be an aluminum mirror including a glass substrate and an aluminum film coated on a surface of the glass substrate, so that the aluminum mirror may reflect light. In addition, the surface type of the reflector may be a plane or a curved surface, and the curved surface may be a free-form surface. In this way, the second light ray can be shaped by the surface of the mirror to correct aberrations.
Specifically, in some embodiments, referring to fig. 1, the at least one reflector includes a first reflector 32, the at least one cold mirror includes a first cold mirror 31, and the first cold mirror 31 and the first reflector 32 are sequentially disposed between the polarization splitting film 20 and the dust-proof film 40 along the first light path.
In the head-up display, the S polarized light generated by the image generating unit 10 is transmitted to the first cold mirror 31 through the polarization splitting film 20, the S polarized light is reflected to the dustproof film 40 through the first cold mirror 31 and the first reflecting mirror 32, the S polarized light is transmitted to the windshield glass 50 through the dustproof film 40, and then is reflected by the windshield glass 50 and enters the human eyes 60, so that the human eyes 60 can observe the image content, and the head-up display is realized.
When sunlight flows backward, referring to fig. 2, the external second light L2 is transmitted to the dustproof film 40 through the windshield 50, transmitted to the first reflector 32 through the dustproof film 40, and reflected to the first cold mirror 31 through the first reflector 32, the first cold mirror 31 reflects the non-infrared light in the second light L2 to the polarization beam splitting film 20 and transmits the infrared light in the second light L2, and then the P-polarized light in the second light L2 is reflected by the polarization beam splitting film 20.
As can be seen, in the head-up display, when sunlight flows backward, on one hand, the infrared light in the external second light L2 will be transmitted by the first cold mirror 31, and the part of light cannot be further transmitted to the polarization splitting film 20; on the other hand, the P-polarized light of the second light L2 propagating onto the polarization splitting film 20 will be reflected by the polarization splitting film 20. Then, under the action of the first cold mirror 31 and the polarization splitting film 20, the infrared light and the P-polarized light in the second light entering the image generating unit can be reduced, and the energy of the second light L2 transmitted to the image generating unit 10 can be greatly reduced, so that the temperature-raising effect of the second light L2 on the image generating unit 10 is reduced, the damage to the image generating unit 10 is reduced, and the image generating unit 10 can be protected. In addition, the polarization beam splitting film 20 is adopted to be close to the image generation unit 10, so that the area of the polarization beam splitting film 20 can be reduced, and the cost and the volume of the head-up display can be reduced.
In a second aspect, embodiments of the present invention further provide a vehicle, including a windshield and the head-up display according to any one of the first aspect; the dustproof film and the windshield are sequentially arranged along the first light path. In this embodiment, the head-up display has the same structure and function as the head-up display described in any embodiment of the first aspect, and details are not repeated here. The vehicle may be an automobile, a train, or the like.
In a third aspect, an embodiment of the present invention further provides a head up display, referring to fig. 3, the head up display includes: the image generating unit 10, the polarization splitting film 20, the infrared reflection mirror 80, the second reflection unit 70, and the dust-proof film 40 are sequentially disposed.
The image generating unit 10 is configured to generate a first light L1 with image information, where the first light L1 is a first polarized light. The polarization splitting film 20 is used for transmitting the first light L1 to the infrared reflecting mirror 80. The infrared reflecting mirror 80 is used for transmitting the first light L1 to the second reflecting unit 70. The second reflecting unit 70 is used for reflecting the first light L1 to the dustproof film 40. The dustproof film 40 is used for transmitting the first light L1. The second reflecting unit 70 also serves to reflect the second light L2 transmitted through the dustproof film 40 to the infrared reflecting mirror 80. The infrared reflector 80 is used for reflecting the infrared light in the second light L2 and transmitting the non-infrared light in the second light L2 to the polarization splitting film 20. The polarization splitting film 20 is used for reflecting the second polarized light in the second light L2.
Specifically, the image generating unit 10 includes an LCD, which can be used to emit the first light L1 with image information, and the first light L1 has a first polarization state, such as S-polarized light. The polarization splitting film 20 has polarization splitting properties, and can be used for transmitting the first polarized light and reflecting the second polarized light, such as transmitting S-polarized light and reflecting P-polarized light. The infrared mirror 80 includes an infrared reflective film that reflects infrared light and transmits non-infrared light. The dustproof film 40 may be made of polymethyl methacrylate (PMMA), polycarbonate (PC) or other transparent materials, and may be used for transmitting light and preventing dust from entering the interior of the head-up display.
In the head-up display, please refer to fig. 3, S polarized light generated by the image generating unit 10 is transmitted to the infrared reflecting mirror 80 through the polarization splitting film 20, and then transmitted to the second reflecting unit 70 through the infrared reflecting mirror 80, the second reflecting unit 70 reflects the S polarized light to the dustproof film 40, and finally the S polarized light is transmitted through the dustproof film 40 and is subsequently applied to a vehicle, the S polarized light can enter human eyes 60 after being reflected by the windshield glass 50, and the human eyes 60 can observe image content to realize head-up display.
When the sunlight flows backward, referring to fig. 4, the external second light L2 is transmitted to the second reflection unit 70 through the dustproof film 40, and is reflected to the infrared reflector 80 through the second reflection unit 70, the infrared reflector 80 reflects the infrared light in the second light L2 and transmits the non-infrared light in the second light L2 to the polarization splitting film 20, and then the polarization splitting film 20 reflects the P-polarized light in the second light L2.
In this head-up display, if the ratio that infrared reflector 80 reflects the infrared light is 100%, and when the reflectivity that polarization beam splitting film 20 reflects the P polarized light is 100%, theoretically, infrared light, the P polarized light in the second light L2 can't get into image generation unit 10, only the S polarized light in the non-infrared light in the second light L2 that finally gets into image generation unit 10, compare in second light L2 directly flows backward gets into image generation unit 10, the embodiment of the utility model provides a head-up display is when taking place the sunshine and flows backward, handles second light L2, reduces infrared light and the P polarized light in the second light that gets into image generation unit 10, greatly reduced the light energy that gets into image generation unit 10 to reduce the damage to image generation unit 10, protect image generation unit 10. And the infrared reflection mirror 80 and the polarization splitting film 20 are disposed between the image generating unit 10 and the second reflection unit 70, the small-sized polarization splitting film 20 and the infrared reflection mirror 80 can be used, reducing the volume and cost of the head-up display.
In order to avoid that the infrared light reflected by the infrared mirror is focused at a certain position of the head-up display, for example to a certain position of the housing of the head-up display, in some embodiments the infrared mirror is curved. Specifically, referring to fig. 4, the infrared reflecting mirror 80 may be in a cylindrical shape, and a concave side of the infrared reflecting mirror faces the image generating unit 10, so that when the infrared light in the second light L2 is reflected, a divergence angle of the infrared light can be increased, so as to scatter the light, thereby preventing the infrared light reflected by the infrared reflecting mirror 80 from being focused on a certain position to cause an excessively high local temperature, and ensuring that the head-up display can work normally.
In order to avoid that the P-polarized light reflected by the polarization splitting film is focused at a certain position of the head-up display, for example, reflected to a certain position of the head-up display housing, in some embodiments, the polarization splitting film is in a curved shape. Specifically, referring to fig. 4, the polarization splitting film 20 may be in a cylindrical shape, and a concave side of the polarization splitting film faces the image generating unit 10, so that when the P-polarized light in the second light L2 is reflected, a divergence angle of the P-polarized light can be increased, so that the light is dispersed, and the P-polarized light reflected by the polarization splitting film 20 is prevented from being focused on a certain position, which causes an excessively high local temperature, thereby ensuring that the head-up display can work normally.
In order to further reduce the internal volume of the head-up display, in some embodiments, referring to fig. 3, the polarization splitting film 20 is attached to the infrared reflector 80. By attaching the polarization splitting film 20 to the infrared reflector 80, the distance between the infrared reflector 80 and the polarization splitting film 20 can be reduced, the internal volume of the head-up display can be reduced, and the overall compactness can be improved.
In some of these embodiments, the second reflecting unit comprises at least one mirror. Wherein, the surface of the reflector is plated with a high-reflectivity film which can be used for reflecting light. For example, the mirror may be an aluminum mirror including a glass substrate and an aluminum film coated on a surface of the glass substrate, so that the aluminum mirror may reflect light. In addition, the surface type of the reflector may be a plane or a curved surface, and the curved surface may be a free-form surface. In this way, the second light ray can be shaped by the surface design of the reflector, and the aberration can be corrected.
Specifically, in some embodiments, referring to fig. 3, the second reflecting unit 70 includes a second mirror 71 and a third mirror 72; the second reflecting mirror 71 and the third reflecting mirror 72 are provided between the infrared reflecting mirror 80 and the dust-proof film 40 in this order along the first optical path.
In the head-up display, please refer to fig. 3, S polarized light generated by the image generating unit 10 is transmitted to the infrared reflecting mirror 80 through the polarization splitting film 20, and then transmitted to the second reflecting mirror 71 through the infrared reflecting mirror 80, the second reflecting mirror 71 reflects the S polarized light to the third reflecting mirror 72, the third reflecting mirror 72 reflects the S polarized light to the dustproof film 40, and finally, the S polarized light is transmitted to the windshield 50 through the dustproof film 40, and finally, the S polarized light can enter the human eyes 60 after being reflected by the windshield 50, and the human eyes 60 can observe image content, thereby realizing head-up display.
When the sunlight flows backward, referring to fig. 4, the external second light L2 is transmitted to the third reflector 72 through the dustproof film 40, reflected to the second reflector 71 through the third reflector 72, and reflected to the infrared reflector 80 through the second reflector 71, the infrared reflector 80 in the second light L2 transmits the non-infrared light in the second light L2 to the polarization beam splitting film 20 and reflects the infrared light in the second light L2, and then the P-polarized light in the second light L2 is reflected by the polarization beam splitting film 20.
As can be seen, in the head-up display, when sunlight flows backward, on one hand, the infrared light in the external second light L2 will be reflected by the infrared reflector 80, and the part of the light cannot be further transmitted to the image generating unit 10, and on the other hand, the P-polarized light in the second light L2 transmitted to the polarization splitting film 20 will be reflected by the polarization splitting film 20, and the part of the light cannot be further transmitted to the image generating unit 10. Thus, under the action of the infrared mirror 80 and the polarization splitting film 20, the infrared light and the P-polarized light in the second light entering the image generating unit can be reduced, and the energy transmitted from the second light L2 to the image generating unit 10 can be greatly reduced, so that the temperature rise effect of the second light L2 on the image generating unit 10 is reduced, the damage to the image generating unit 10 is reduced, and the image generating unit 10 can be protected. In addition, by disposing the infrared mirror 80 and the polarization splitting film 20 close to the image generating unit 10, the areas of the infrared mirror 80 and the polarization splitting film 20 can be reduced, thereby reducing the cost and the volume of the head-up display.
In a fourth aspect, embodiments of the present invention further provide a vehicle, including a windshield and the heads-up display according to any one of the third aspects; the windshield glass is arranged in the light emergent direction of the dustproof film. In this embodiment, the head-up display has the same structure and function as the head-up display described in any embodiment of the third aspect, and details are not repeated here. The vehicle may be an automobile, a train, or the like.
It should be noted that the above-described embodiments of the apparatus are merely illustrative, where 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 multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled 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 or substitutions do not depart from the scope of the invention in its corresponding aspects.
Claims (10)
1. A heads-up display, comprising: the image generation unit, the polarization beam splitting film, the first reflection unit and the dustproof film are sequentially arranged along the first light path;
the image generation unit is used for generating first light with image information, and the first light is first polarized light;
the polarization beam splitting film is used for transmitting the first light to the first reflection unit;
the first reflection unit comprises at least one cold light mirror, and the cold light mirror is used for reflecting the first light to the dustproof film;
the dustproof film is used for transmitting the first light;
the cold light mirror is also used for transmitting infrared light in second light rays transmitted by the dustproof film and reflecting non-infrared light in the second light rays to the polarization light splitting film;
the polarization splitting film is used for reflecting second polarized light in the second light rays.
2. The heads-up display of claim 1 wherein the polarization splitting film is curved.
3. The heads-up display of claim 1 or 2 wherein the first reflective unit further comprises at least one mirror.
4. The heads-up display of claim 3 wherein the at least one mirror comprises a first mirror and the at least one cold mirror comprises a first cold mirror;
the first cold light mirror and the first reflector are sequentially arranged between the polarization light splitting film and the dustproof film along the first light path.
5. A vehicle comprising a windscreen, and a heads-up display as claimed in any one of claims 1 to 4;
the dustproof film and the windshield glass are sequentially arranged along the first light path.
6. A heads-up display, comprising: the device comprises an image generation unit, a polarization beam splitting film, an infrared reflecting mirror, a second reflecting unit and a dustproof film which are arranged in sequence;
the image generating unit is used for generating first light with image information, and the first light is first polarized light;
the polarization beam splitting film is used for transmitting the first light to the infrared reflecting mirror;
the infrared reflecting mirror is used for transmitting the first light to the second reflecting unit;
the second reflection unit is used for reflecting the first light to the dustproof film;
the dustproof film is used for transmitting the first light;
the second reflection unit is also used for reflecting the second light rays transmitted by the dustproof film to the infrared reflection mirror;
the infrared reflector is used for reflecting infrared light in the second light and transmitting non-infrared light in the second light to the polarization splitting film;
the polarization splitting film is used for reflecting second polarized light in the second light rays.
7. The heads-up display of claim 6 wherein the polarization splitting film and the infrared mirror are curved.
8. The head-up display of claim 7, wherein the polarization splitting film is attached to the infrared mirror.
9. The heads-up display of any one of claims 6-8 wherein the second reflective unit includes at least one mirror.
10. A vehicle comprising a windscreen, and a heads-up display as claimed in any one of claims 6 to 8;
the windshield glass is arranged in the light emergent direction of the dustproof film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222000221.1U CN217879833U (en) | 2022-07-28 | 2022-07-28 | Head-up display and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222000221.1U CN217879833U (en) | 2022-07-28 | 2022-07-28 | Head-up display and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN217879833U true CN217879833U (en) | 2022-11-22 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222000221.1U Active CN217879833U (en) | 2022-07-28 | 2022-07-28 | Head-up display and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217879833U (en) |
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2022
- 2022-07-28 CN CN202222000221.1U patent/CN217879833U/en active Active
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