CN210109474U - Aerial imaging system for increasing visualization range - Google Patents
Aerial imaging system for increasing visualization range Download PDFInfo
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- CN210109474U CN210109474U CN201920930843.XU CN201920930843U CN210109474U CN 210109474 U CN210109474 U CN 210109474U CN 201920930843 U CN201920930843 U CN 201920930843U CN 210109474 U CN210109474 U CN 210109474U
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Abstract
The utility model provides an increase aerial imaging system of visual scope, including image generator (10) that is used for launching linear polarization light, reflection formula polarisation subassembly (20) of slope above image generator (10) are located, locate image generator (10) top and be located reflection of reflection formula polarisation subassembly (20) one side subassembly (30), and locate image generator (10) top and be located two reflectors (40) of the relative both sides of image generator (10) respectively, wherein, aerial imaging system has increased reflector (40), can utilize the great linear polarization light of emission angle, thereby visual scope has been improved greatly, make the observer also can clearly watch the formation of image picture under the condition of big visual angle, simultaneously still improve the utilization ratio of light, effectively increase formation of image luminance, make the formation of image picture clear.
Description
Technical Field
The present application relates to the field of optical imaging technology, and more particularly, to an aerial imaging system for increasing the visualization range.
Background
The existing aerial imaging is divided into two forms: the first imaging mode mainly adopts a Fresnel lens as a main technology for bearing, and utilizes the Fresnel focusing principle to converge multi-angle light sources of a screen on the same focus and diverge in a conical manner, so that the viewing angle is within an effective angle range; the second imaging mode is to adopt a retro-reflective film, reflect the multi-angle light source of the screen on a semi-transparent semi-reflective lens until the retro-reflective film returns the screen light source almost to the original path, at the moment, half of the returned light source passes through the semi-transparent semi-reflective lens, and finally, according to the core principle of air imaging, the light of the screen is converged in the air according to rules, so that an image which can be observed is presented. However, both of the above-mentioned aerial imaging forms have a problem of small visualization range, which will certainly affect the use experience of the observer.
Disclosure of Invention
The application aims to provide an aerial imaging system for increasing a visualization range, and aims to solve the technical problem that the existing aerial imaging system for increasing the visualization range is small in visualization range.
In order to solve the technical problem, the embodiment of the application adopts the following technical scheme: an aerial imaging system for increasing the visualization range is provided, comprising:
an image generator for emitting linearly polarized light;
the reflective polarizing component is obliquely arranged above the image generator and comprises a reflective polarizing film, and the polarizing axis direction of the reflective polarizing film is vertical to the polarizing direction of the linearly polarized light;
the retroreflection assembly is arranged above the image generator and positioned on one side of the reflection type polarization assembly; and
the two reflecting pieces are arranged above the image generator and are respectively positioned on two opposite sides of the retro-reflecting assembly;
the reflective polarizing film is used for receiving the linearly polarized light emitted by the image generator and reflecting the linearly polarized light to the retro-reflecting assembly and the reflecting piece, the reflecting piece is used for receiving the linearly polarized light reflected by the reflective polarizing film and reflecting the linearly polarized light to the retro-reflecting assembly, the retro-reflecting assembly is used for receiving the linearly polarized light reflected by the reflective polarizing film and the reflecting piece and changing the polarization direction of the linearly polarized light and retro-reflecting the linearly polarized light with the changed polarization direction back, so that the linearly polarized light with the changed polarization direction can be emitted through the reflective polarizing film, and the linearly polarized light with the changed polarization direction is focused and imaged on the side, away from the retro-reflecting assembly, of the reflective polarizing assembly.
In one embodiment, the reflective polarizing assembly further comprises a first substrate disposed on a side of the reflective polarizing film away from the retroreflective assembly.
In one embodiment, the first substrate is a light transmissive material.
In one embodiment, a side of the first substrate away from the reflective polarizing film is provided with a polarizing film.
In one embodiment, the polarizing film has a polarizing axis parallel to a polarizing axis of the reflective polarizing film.
In one embodiment, the image generator is defined at an angle of α with respect to the reflective polarizer, β with respect to the retroreflective member, and α + β + γ is defined at 180 ° with respect to the retroreflective member.
In one embodiment, α and β are both 45 °, γ is 90 °, and the reflector is perpendicular to both the image generator, the reflective polarizing component, and the retroreflective component.
In one embodiment, the retro-reflective assembly includes a first wave plate, and a retro-reflective film disposed on a side of the first wave plate away from the reflective polarizer assembly.
In one embodiment, the first wave plate is a quarter wave plate.
In one embodiment, the retroreflective film is a highly retroreflective film having a layer of a micro-triangular prism array disposed thereon.
In one embodiment, the retro-reflective assembly further comprises a second substrate disposed on a side of the retro-reflective film remote from the first wave plate.
In one embodiment, the retroreflective assembly further includes a backing layer disposed on a side of the second substrate remote from the retroreflective film.
The aerial imaging system capable of increasing the visualization range provided by the embodiment of the application has the advantages that the light path for realizing focusing imaging can be divided into the following two types according to the emission angle of linearly polarized light:
(1) for the linearly polarized light with a smaller emission angle, the image generator emits the linearly polarized light towards the reflective polarizing film, and because the polarization direction of the linearly polarized light is perpendicular to the polarization axis direction of the reflective polarizing film, the linearly polarized light cannot penetrate through the reflective polarizing film, the linearly polarized light is reflected, the reflective polarizing film reflects the linearly polarized light to the retro-reflecting component, the retro-reflecting component changes the polarization direction of the linearly polarized light and retro-reflects the linearly polarized light with the changed polarization direction back to the reflective polarizing film, and the linearly polarized light with the changed polarization direction is emitted from the reflective polarizing film;
(2) for linearly polarized light with a large emission angle, the image generator emits the linearly polarized light toward the reflective polarizing film, since the polarization direction of the linearly polarized light is perpendicular to the polarization axis direction of the reflective polarizing film, the linearly polarized light cannot transmit through the reflective polarizing film, the linearly polarized light is reflected, because the emission angle of the part of linearly polarized light is large, the part of linearly polarized light cannot be directly reflected to the retro-reflection assembly by the reflective polarizing film, the linear polarized light is reflected to the reflecting piece by the reflective polarizing film, and then the linear polarized light is reflected to the retro-reflection assembly by the reflecting piece, the retro-reflection assembly changes the polarization direction of the linear polarized light and retro-reflects the linearly polarized light with the changed polarization direction back to the reflecting piece, the reflecting piece reflects the linearly polarized light with the changed polarization direction to the reflective polarizing film, and the linearly polarized light with the changed polarization direction is emitted from the reflective polarizing film;
therefore, the reflector is added to the aerial imaging system, and for the aerial imaging system without the reflector, the linear polarized light with a large emission angle can be additionally utilized, so that the visual range is increased from theta 1 to theta 2, the visual range is greatly improved, an observer can clearly view an imaging picture under the condition of a large visual angle, the utilization rate of light is improved, the imaging brightness is effectively increased, the imaging picture is clear, and the use experience of the observer is effectively improved.
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 based on these drawings without inventive exercise.
Fig. 1 is a schematic perspective view of an aerial imaging system with an increased visualization range provided in an embodiment of the present application;
fig. 2 is a schematic perspective view of an aerial imaging system with an increased visualization range, which omits a reflective polarization assembly according to an embodiment of the present application;
FIG. 3 is an optical simulation diagram of an aerial imaging system with an increased visualization range provided by an embodiment of the present application;
fig. 4 is a schematic cross-sectional structure diagram of a first reflective polarization assembly provided in an embodiment of the present disclosure;
FIG. 5 is a schematic cross-sectional view of a second reflective polarizer according to an embodiment of the present disclosure;
FIG. 6 is a schematic cross-sectional view of a retroreflective assembly according to an embodiment of the present disclosure;
fig. 7 is a flowchart of an aerial imaging method according to an embodiment of the present application.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1 and fig. 2 in combination with fig. 4, an aerial imaging system with an increased visualization range according to an embodiment of the present application includes:
an image generator 10 for emitting linearly polarized light;
a reflective polarization assembly 20 obliquely disposed above the image generator 10, the reflective polarization assembly 20 including a reflective polarizing film 21, a polarization axis direction of the reflective polarizing film 21 being perpendicular to a polarization direction of the linearly polarized light;
a retro-reflective assembly 30 disposed above the image generator 10 and on one side of the reflective polarizer assembly 20; and
two reflectors 40 disposed above the image generator 10 and on opposite sides of the retroreflective element 30;
the reflective polarizing film 21 is configured to receive the linearly polarized light emitted from the image generator 10 and reflect the linearly polarized light to the retro-reflecting assembly 30 and the reflecting member 40, the reflecting member 40 is configured to receive the linearly polarized light reflected by the reflective polarizing film 21 and reflect the linearly polarized light to the retro-reflecting assembly 30, the retro-reflecting assembly 30 is configured to receive the linearly polarized light reflected by both the reflective polarizing film 21 and the reflecting member 40 and change a polarization direction of the linearly polarized light, and then retroreflect all of the linearly polarized light with the changed polarization direction back, so that the linearly polarized light with the changed polarization direction can be emitted through the reflective polarizing film 21, and finally, the linearly polarized light with the changed polarization direction is focused and imaged on a side of the reflective polarizing assembly 20 away from the retro-reflecting assembly 30.
With reference to fig. 1 to 4, a light path of the aerial imaging system for increasing a visualization range to implement focused imaging according to an emission angle of linearly polarized light (where the emission angle refers to an included angle between the linearly polarized light emitted by an image emitter and an axial direction of the image emitter), may be divided into the following two types:
(1) for the linearly polarized light with a small emission angle, the image generator 10 emits the linearly polarized light toward the reflective polarizing film 21, because the polarization direction of the linearly polarized light is perpendicular to the polarization axis direction of the reflective polarizing film 21, the linearly polarized light cannot pass through the reflective polarizing film 21, the linearly polarized light is reflected, the reflective polarizing film 21 reflects the linearly polarized light to the retro-reflecting assembly 30, the retro-reflecting assembly 30 changes the polarization direction of the linearly polarized light and retro-reflects the linearly polarized light with the changed polarization direction back to the reflective polarizing film 21, and the linearly polarized light with the changed polarization direction is emitted from the reflective polarizing film 21;
(2) for the linearly polarized light with a large emission angle, the image generator 10 emits the linearly polarized light toward the reflective polarizing film 21, because the polarization direction of the linearly polarized light is perpendicular to the polarization axis direction of the reflective polarizing film 21, the linearly polarized light cannot pass through the reflective polarizing film 21, the linearly polarized light is reflected, because the emission angle of the linearly polarized light is large, the reflective polarizing film 21 cannot directly reflect the linearly polarized light to the retro-reflecting assembly 30, the reflective polarizing film 21 reflects the linearly polarized light to the reflecting member 40 by reflecting the linearly polarized light to the reflecting member 40, and then reflects the linearly polarized light to the retro-reflecting assembly 30 by the reflecting member 40, the retro-reflecting assembly 30 changes the polarization direction of the linearly polarized light and retro-reflects the linearly polarized light with the changed polarization direction to the reflecting member 40, and the reflecting member 40 reflects the linearly polarized light with the changed polarization direction to the reflective polarizing film 21, the linearly polarized light whose polarization direction is changed is emitted from the reflective polarizing film 21.
Therefore, the reflector 40 is added to the aerial imaging system provided by the embodiment of the application, and for the aerial imaging system without the reflector 40, the linear polarized light with a large emission angle can be additionally utilized, so that the visual range is increased from theta 1 to theta 2, the visual range is greatly improved, an observer can clearly view an imaging picture under the condition of a large visual angle, meanwhile, the utilization rate of light is also improved, the imaging brightness is effectively increased, and the imaging picture is clear.
In an embodiment of the present application, two of the image generator 10, the reflective polarizing component 20, and the retroreflective component 30 are disposed at an angle, an included angle between the image generator 10 and the reflective polarizing component 20 is defined as α, an included angle between the reflective polarizing component 20 and the retroreflective component 30 is defined as β, an included angle between the image generator 10 and the retroreflective component 30 is defined as γ, and then α + β + γ is 180 °, that is, planes of the image generator 10, the reflective polarizing component 20, and the retroreflective component 30 enclose a triangular prism forming a hollow cavity, and the two reflectors 40 are respectively disposed at openings at two ends of the hollow cavity.
As a preferred embodiment, the angle between the image generator 10 and the reflective polarizing component 20 is 45 °, the angle between the reflective polarizing component 20 and the retroreflective component 30 is 45 °, the angle between the image generator 10 and the retroreflective component 30 is 90 °, and the reflective element 40 is perpendicular to the image generator 10, the reflective polarizing component 20 and the retroreflective component 30, in this embodiment, θ 1 is measured to be 66.1 ° and θ 2 is measured to be 94.2 °, so that the visualization range is greatly improved. It is understood that the angles between the image generator 10, the reflective polarizing element 20, the retro-reflective element 30 and the reflective element 40 can be modified as appropriate according to the actual application, and the embodiment is not limited herein.
In an embodiment of the present application, the thickness of the reflective polarizing film 21 is relatively thin, and in order to ensure the flatness of the reflective polarizing film 21, as shown in fig. 4, a first substrate 22 may be disposed on a side of the reflective polarizing film 21 away from the retro-reflective assembly 30, and during manufacturing, the reflective polarizing film 21 may be formed on the first substrate 22, so as to ensure the flatness of the reflective polarizing film 21.
Further, the first substrate 22 is a transparent material, so that the light passing through the reflective polarizing film 21 is focused and imaged on a side of the first substrate 22 away from the reflective polarizing film 21. Alternatively, the first substrate 22 may be made of one or more transparent materials such as poly (methyl methacrylate), PMMA), Polystyrene (PS), Polycarbonate (PC), and the like.
In one embodiment of the present application, as shown in fig. 5, a polarizing film 25 is disposed on a side of the first substrate 22 away from the reflective polarizing film 21, a polarizing axis of the polarizing film 25 is parallel to a polarizing axis of the reflective polarizing film 21, and light transmitted through the reflective polarizing film 21 can be emitted through the polarizing film 25 and focused to form an image on the side of the polarizing film 25 away from the reflective polarizing film 21.
In an embodiment of the present application, as shown in fig. 6, the retro-reflective assembly 30 includes a first wave plate 31 and a retro-reflective film 32 disposed on a side of the first wave plate 31 away from the reflective polarizing assembly 20, where the first wave plate 31 is a quarter wave plate, and as seen in fig. 3, the linearly polarized light reflected to the retro-reflective assembly 30 first passes through the quarter wave plate to reach the retro-reflective film 32, and then is reflected back by the retro-reflective film 32 to exit after passing through the quarter wave plate again, that is, the linearly polarized light passes through the quarter wave plate twice and then returns along an original path, so that a polarization direction of the linearly polarized light is changed, and a polarization property of the linearly polarized light with the changed polarization direction is equal to a polarization property of the reflective polarizing film 21, so that the linearly polarized light with the changed polarization direction can exit from the reflective.
Preferably, the retro-reflective film 32 is a high-regressive retro-reflective film, and the high-regressive retro-reflective film is provided with the micro-triangular prism array layer 33, so that light irradiated to the retro-reflective film 32 returns along the original path in a high-regressive manner, the imaging precision is effectively improved, and an imaging picture is clear.
In one embodiment of the present application, the retro-reflective assembly 30 further includes a second substrate 34 disposed on a side of the retro-reflective film 32 away from the first wave plate 31, and a back adhesive layer 35 disposed on a side of the second substrate 34 away from the retro-reflective film 32, the retro-reflective film 32 and the first wave plate 31 are sequentially disposed on the second substrate 34, so as to ensure flatness of the retro-reflective film 32 and the first wave plate 31, and the back adhesive layer 35 is disposed on a side of the second substrate 34 away from the retro-reflective film 32, so as to adhere the retro-reflective assembly 30 to a rigid substrate, thereby fixing the retro-reflective assembly 30.
Referring to fig. 7 in combination with fig. 1 to 6, an aerial imaging method using the aerial imaging system with an increased visualization range according to the embodiment of the present application is further provided, where the aerial imaging method includes the following steps:
step S1, the image generator 10 emits linearly polarized light toward the reflective polarizing film 21;
step S2, the reflective polarizing film 21 receives the linearly polarized light and reflects the linearly polarized light to the retroreflective assembly 30 and the reflective member 40, respectively, wherein the linearly polarized light reflected to the reflective member 40 is reflected to the retroreflective assembly 30 by the reflective member 40;
step S3, the retro-reflection assembly 30 receives the linearly polarized light reflected by the reflective polarizing film 21 and the reflection member 40 and changes the polarization direction of the linearly polarized light, and then retro-reflects the linearly polarized light with the changed polarization direction back along the original optical path;
in step S4, the linearly polarized light with the changed polarization direction is emitted through the reflective polarizing film 21, and focused on the side of the reflective polarizing assembly 20 away from the retroreflective assembly 30.
The aerial imaging method provided by the embodiment of the application adopts the aerial imaging system for increasing the visualization range, and can additionally utilize the linear polarized light with a larger emission angle, so that the visualization range is increased from theta 1 to theta 2, the visualization range is greatly improved, an observer can clearly view an imaging picture under the condition of a large visual angle, the utilization rate of light is also improved, the imaging brightness is effectively increased, the imaging picture is clear, and the use experience of the observer is effectively improved.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (12)
1. An aerial imaging system for increasing a visualization range, comprising:
an image generator for emitting linearly polarized light;
the reflective polarizing component is obliquely arranged above the image generator and comprises a reflective polarizing film, and the polarizing axis direction of the reflective polarizing film is vertical to the polarizing direction of the linearly polarized light;
the retroreflection assembly is arranged above the image generator and positioned on one side of the reflection type polarization assembly; and
the two reflecting pieces are arranged above the image generator and are respectively positioned on two opposite sides of the retro-reflecting assembly;
the reflective polarizing film is used for receiving the linearly polarized light emitted by the image generator and reflecting the linearly polarized light to the retro-reflecting assembly and the reflecting piece, the reflecting piece is used for receiving the linearly polarized light reflected by the reflective polarizing film and reflecting the linearly polarized light to the retro-reflecting assembly, the retro-reflecting assembly is used for receiving the linearly polarized light reflected by the reflective polarizing film and the reflecting piece and changing the polarization direction of the linearly polarized light and retro-reflecting the linearly polarized light with the changed polarization direction back, so that the linearly polarized light with the changed polarization direction can be emitted through the reflective polarizing film, and the linearly polarized light with the changed polarization direction is focused and imaged on the side, away from the retro-reflecting assembly, of the reflective polarizing assembly.
2. The aerial imaging system with increased visualization range of claim 1, wherein the reflective polarizer assembly further comprises a first substrate disposed on a side of the reflective polarizer film remote from the retroreflective assembly.
3. The aerial imaging system with increased visualization range of claim 2, wherein the first substrate is a piece of light transmissive material.
4. The aerial imaging system with increased visualization range of claim 2, wherein a side of the first substrate distal from the reflective polarizing film is provided with a polarizing film.
5. The aerial imaging system of increasing the range of visualization of claim 4, wherein the polarizing film has a polarization axis parallel to the polarization axis of the reflective polarizing film.
6. The aerial imaging system with increased visualization range of claim 1, wherein the image generator is oriented at an angle α with respect to the reflective polarizer assembly, the reflective polarizer assembly is oriented at an angle β with respect to the retroreflective assembly, and the image generator is oriented at an angle γ with respect to the retroreflective assembly, such that α + β + γ is 180 °.
7. The aerial imaging system with increased visualization range of claim 6, wherein α and β are both 45 °, γ is 90 °, and the reflector is perpendicular to the image generator, the reflective polarizing component, and the retro-reflective component.
8. The aerial imaging system of any one of claims 1 to 7, wherein the retro-reflective assembly comprises a first wave plate, and a retro-reflective film disposed on a side of the first wave plate away from the reflective polarizer assembly.
9. The aerial imaging system of increased visualization range of claim 8, wherein the first wave plate is a quarter wave plate.
10. The aerial imaging system with increased visualization range of claim 8, wherein the retroreflective film is a highly regressive retroreflective film having a layer of an array of micro-triangular pyramidal prisms disposed thereon.
11. The aerial imaging system of claim 8, wherein the retro-reflective assembly further comprises a second substrate disposed on a side of the retro-reflective film distal from the first wave plate.
12. The aerial imaging system of claim 11, wherein the retroreflective assembly further comprises a backing layer disposed on a side of the second substrate distal from the retroreflective film.
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| CN201920930843.XU CN210109474U (en) | 2019-06-19 | 2019-06-19 | Aerial imaging system for increasing visualization range |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110612471A (en) * | 2019-06-19 | 2019-12-24 | 深圳盈天下视觉科技有限公司 | Aerial imaging system and aerial imaging method for increasing visual range |
| CN112946914A (en) * | 2021-02-23 | 2021-06-11 | 荆门市探梦科技有限公司 | Transmission type geometric holographic screen with field angle and application thereof |
| CN112946915A (en) * | 2021-02-23 | 2021-06-11 | 荆门市探梦科技有限公司 | Reflective geometric holographic screen with field angle and application thereof |
| WO2023044670A1 (en) * | 2021-09-23 | 2023-03-30 | 深圳盈天下视觉科技有限公司 | Aerial imaging device, aerial imaging system, and aerial imaging method |
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2019
- 2019-06-19 CN CN201920930843.XU patent/CN210109474U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110612471A (en) * | 2019-06-19 | 2019-12-24 | 深圳盈天下视觉科技有限公司 | Aerial imaging system and aerial imaging method for increasing visual range |
| CN112946914A (en) * | 2021-02-23 | 2021-06-11 | 荆门市探梦科技有限公司 | Transmission type geometric holographic screen with field angle and application thereof |
| CN112946915A (en) * | 2021-02-23 | 2021-06-11 | 荆门市探梦科技有限公司 | Reflective geometric holographic screen with field angle and application thereof |
| CN112946914B (en) * | 2021-02-23 | 2024-04-02 | 荆门市探梦科技有限公司 | Transmission type geometric holographic screen with opening angle and its application |
| WO2023044670A1 (en) * | 2021-09-23 | 2023-03-30 | 深圳盈天下视觉科技有限公司 | Aerial imaging device, aerial imaging system, and aerial imaging method |
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