Aerosol halo refraction stereoscopic imaging method and device

Abstract

The present application relates to the technical field of naked-eye aerial stereoscopic imaging, and specifically discloses an aerosol halo refraction stereoscopic imaging method and device. The method screens aerosol microparticles with a size of 0.5-5 microns and a surface roughness Ra of less than 20 nm, and purifies the microparticles through 5-15 kV electrostatic sorting, 0.1-0.5 m / s laminar flow sorting, and a low-surface-energy anti-sticking coating to form a stable aerosol cloud. The cloud is irradiated with a full-visible-light-band directional parallel light beam to reproduce the optical mechanism of atmospheric halo, and a three-dimensional layered stereoscopic color light field is constructed through particle refraction dispersion. The supporting device includes a light-transmitting sealed imaging cavity, a medium sorting unit, a light source unit, and a control unit. The present application directly uses natural environmental aerosol without additional medium, has low operation and maintenance cost, is environmentally friendly, and is suitable for various civilian imaging scenes due to low overall power consumption, no optical radiation, clear images, high color saturation, and strong stereoscopic level.

Description

Technical Field

[0001] This invention relates to the field of naked-eye aerial stereoscopic imaging technology, specifically to an aerosol halo refraction stereoscopic imaging method and device. Background Technology

[0002] Naked-eye 3D imaging technology is a cutting-edge research direction in the display field, aiming to eliminate the need for physical carriers such as screens and projection media to achieve suspended 3D images in free space. Existing mainstream solutions have significant technical shortcomings: Traditional fog / water mist projection relies on water mist diffuse scattering imaging, which can only generate two-dimensional pseudo-stereoscopic images with poor color and blurred edges. It also continuously consumes water resources and has poor temperature and humidity stability.

[0003] Laser plasma imaging relies on high-energy lasers to ionize the air. The equipment is expensive and consumes a lot of energy. Lasers pose radiation safety hazards, and the imaging colors are limited, making it difficult to miniaturize for civilian use.

[0004] Traditional optical holography relies on physical recording media such as holographic films and spatial light modulators, cannot achieve pure aerial levitation imaging, has stringent requirements for environmental vibration and cleanliness, and has high mass production costs.

[0005] Existing aerosol-related research only treats aerosols as environmental monitoring objects; the limited amount of aerosol imaging uses diffuse scattering mechanisms, and there is no technical solution to achieve stereoscopic imaging by replicating the refraction and dispersion of solar halos using microparticles.

[0006] In summary, the industry lacks mature technologies for precise micro-dust sorting, steady-state constraint, and the construction of a three-dimensional light field based on halo dispersion, indicating a significant research and development gap. Summary of the Invention

[0007] This invention overcomes the shortcomings of existing aerial imaging methods, such as reliance on artificial media, high energy consumption, poor safety, and poor image quality, and provides an aerosol halo refractive stereo imaging (AHR-SI) method and device. This invention extracts smooth aerosol microparticles in the air, replicates the refractive dispersion law of atmospheric halo, and realizes screenless, low-consumption, and highly stable naked-eye stereo imaging.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a method for stereoscopic imaging of aerosol halo refraction, comprising the following steps: S1. Screening aerosol microparticles with a particle size of 0.5μm to 5μm and a surface roughness Ra < 20nm from the air; S2. Through the synergistic effect of electrostatic sorting, laminar airflow sorting and anti-stick coating on the wall, microparticles are purified to form a stable suspended aerosol cloud free from stray interference. S3. By illuminating a steady-state suspended aerosol cloud with a directional parallel beam, the refraction and dispersion optical mechanism of an atmospheric halo is replicated. The beam undergoes directional refraction and dispersion on the surface of microparticles, and the incident light of different wavelengths undergoes first-order halo refraction on the smooth surface of microparticles, forming differentiated characteristic deflection angles (approximately 40° for blue light, approximately 41° for green light, and approximately 42° for red light), which correspond to the near, middle, and far spatial depth levels, respectively, naturally forming a three-dimensional stereoscopic colored light field with real physical depth of field.

[0009] Furthermore, the electrostatic sorting is achieved by an electrostatic generator component installed in a sealed imaging cavity, generating an electrostatic field voltage of 5kV to 15kV.

[0010] Furthermore, the laminar airflow sorting is achieved by a laminar airflow assembly located at the bottom of the imaging cavity, with an airflow velocity of 0.1 m / s to 0.5 m / s.

[0011] Furthermore, the anti-adhesion coating on the wall is a low surface energy coating with a surface energy of no more than 20 mN / m, which is applied to the inner wall of the imaging cavity to reduce the adhesion of microparticles to the wall and assist in the sedimentation and separation of rough particles.

[0012] Furthermore, the directional parallel beam is emitted by multiple sets of adjustable focusing light sources, and its spectrum covers the entire visible light spectrum.

[0013] The present invention also provides an aerosol halo refraction stereoscopic imaging device for implementing the above method, comprising: The sealed imaging cavity is a light-transmitting cavity with a transmittance of not less than 85% in the visible light band; A media sorting unit is disposed inside or connected to the imaging cavity; the media sorting unit includes an electrostatic generation component and a laminar flow airflow component.

[0014] A light source unit is disposed on the top or side of the imaging cavity and is used to emit a directional parallel light beam into the imaging cavity; The control unit is electrically connected to the electrostatic generator, the laminar airflow assembly, and the light source unit, respectively.

[0015] Furthermore, the electrostatic generation assembly includes a pair of symmetrically arranged electrode plates and a low-voltage electrostatic generator, with the electrode plates symmetrically arranged on the left and right sides of the imaging cavity.

[0016] Furthermore, the laminar airflow assembly is a low-speed laminar flow generator, located at the bottom of the imaging cavity, which outputs an upward uniform laminar airflow.

[0017] Furthermore, the inner wall of the imaging cavity is fully covered with an anti-stick coating, the surface energy of which is no higher than 20mN / m.

[0018] Furthermore, the light source unit is a high-brightness LED light source or a laser light source, and is a set of directional parallel light sources with adjustable focus and adjustable angle, covering the entire visible light spectrum.

[0019] The advantages of this invention compared to the prior art are: This invention directly utilizes environmental aerosols, eliminating the need for a continuous supply of water mist, ionization medium, and holographic carrier, resulting in low operation and maintenance costs and environmental friendliness. This invention uses particle-directed refraction instead of diffuse scattering, resulting in clear image edges, high color saturation, a realistic three-dimensional layered effect, and weak stray light interference. This invention does not require high-energy ionizing lasers, has low power consumption, no optical radiation, and is suitable for a variety of civilian applications. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an aerosol halo refraction stereoscopic imaging device according to the present invention. Figure 1 .

[0021] Figure 2 This is a schematic diagram of the structure of an aerosol halo refraction stereoscopic imaging device according to the present invention. Figure 2 .

[0022] Figure 3 This is a schematic diagram illustrating the principle of constructing a three-dimensional light field in this invention.

[0023] As shown in the figure: 1. Imaging cavity, 2. Medium sorting unit, 21. Electrostatic generation component, 22. Laminar flow airflow component, 3. Light source unit, 4. Control unit, 5. Anti-stick coating. Detailed Implementation

[0024] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0025] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0026] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0027] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0028] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] The following detailed description of the aerosol halo refraction stereoscopic imaging method and apparatus of the present invention, with reference to the accompanying drawings, provides further insight.

[0031] Combined with appendix Figure 1-3 The specific implementation process of the aerosol halo refraction stereoscopic imaging method and device of the present invention is as follows: Example 1

[0032] A method for stereoscopic imaging based on aerosol halo refraction includes the following steps: S1. Select aerosol microparticles with a particle size of 0.5μm to 5μm and a surface roughness Ra < 20nm from the air to serve as imaging optical media. Aerosol microparticles in this particle size range have excellent light refraction and dispersion properties and extremely low gravitational settling rate, which can meet the basic conditions for levitation imaging. The ultra-smooth surface can effectively avoid diffuse reflection and stray light interference, ensuring image clarity.

[0033] S2. Through the synergistic effect of electrostatic sorting, laminar airflow sorting and the anti-stick coating 5 on the wall, the screened microparticles are purified to remove coarse particles, large-diameter impurities, agglomerated particles and suspended dust interference, so that qualified microparticles are evenly distributed in the closed imaging space to form a stable suspended aerosol cloud without stray interference, providing a homogeneous medium environment for stable optical imaging.

[0034] S3. By using a directional parallel beam to vertically irradiate a stable suspended aerosol cloud, the refraction and dispersion optical mechanism of an atmospheric halo is accurately replicated. The incident beam undergoes directional refraction and dispersion on the surface of ultra-smooth microparticles, splitting it into different colors of visible light. The incident light of different wavelengths undergoes first-order halo refraction on the smooth microparticle surface, forming differentiated characteristic deflection angles (approximately 40° for blue light, approximately 41° for green light, and approximately 42° for red light), corresponding to three spatial depth levels: near, middle, and far. This naturally forms a three-dimensional stereoscopic color light field with real physical depth of field, realizing medium-free suspended stereoscopic halo imaging.

[0035] In a preferred embodiment, electrostatic sorting is achieved by an electrostatic generator 21 installed in a sealed imaging cavity 1. The generated electrostatic field voltage is 5kV to 15kV. Charged rough particles and impurity particles are removed by electrostatic adsorption, and target aerosol microparticles with uniform particle size and smooth surface are screened out.

[0036] In a preferred embodiment, laminar airflow sorting is achieved by a laminar airflow assembly 22 disposed at the bottom of the imaging cavity 1. The airflow velocity is 0.1m / s to 0.5m / s. The low-speed and uniform laminar airflow can counteract the gravitational settling effect of microparticles, maintain the steady suspension of microparticles, and at the same time drive the sedimentation and separation of impurity particles, further purifying the aerosol cloud.

[0037] In a preferred embodiment, the anti-adhesion coating 5 is a low surface energy coating with a surface energy of no more than 20 mN / m. It is applied to the inner wall of the imaging cavity 1, which can significantly reduce the adhesion force between aerosol microparticles and the cavity wall, avoid microparticle wall adhesion loss, and at the same time assist the rapid sedimentation and separation of rough impurity particles, ensuring the purity and stability of the aerosol cloud.

[0038] In a preferred embodiment, the directional parallel beam is emitted by multiple sets of adjustable focus light sources, covering the entire visible light spectrum, which can realize full-color dispersion imaging. At the same time, the direction of the light path can be precisely controlled by focusing and angle adjustment, optimizing the three-dimensional light field layering effect. Example 2

[0039] An aerosol halo refraction stereoscopic imaging device is used to realize the above-mentioned aerosol halo refraction stereoscopic imaging method, specifically including a sealed imaging cavity 1, a medium sorting unit 2, a light source unit 3, and a control unit 4.

[0040] The imaging cavity 1 is a sealed, light-transmitting cavity with a visible light transmittance of ≥85%, preferably optical glass / acrylic; the inner wall of the imaging cavity 1 is fully covered with an anti-stick coating 5, the surface energy of the anti-stick coating 5 is ≤20mN / m, which can reduce the adhesion of smooth micro-particles to the wall surface, while adsorbing rough dust and simultaneously completing the purification of the medium.

[0041] The media sorting unit 2 includes an electrostatic generator assembly 21 and a laminar flow airflow assembly 22. The electrostatic generator assembly 21 includes a pair of symmetrically arranged electrode plates and a low-voltage electrostatic generator. The electrode plates are symmetrically installed on the left and right sides of the imaging cavity 1. The output voltage of the electrostatic generator is stably controlled between 5kV and 15kV, which can form a uniform weak electrostatic field inside the imaging cavity 1. Based on the difference in particle charge-to-mass ratio, smooth and dense microparticles have a high induced charge and are stably maintained in the central imaging area of ​​the cavity under the action of the electric field force. Coarse and agglomerated particles have uneven charge characteristics, deflect towards the cavity wall and are permanently trapped by the anti-stick coating, realizing dual sorting of morphology and particle size.

[0042] The light source unit 3 is located on the top / side of the cavity, and uses a focusable LED / parallel laser to cover the entire visible light spectrum and output a directional parallel beam.

[0043] The control unit 4 is electrically connected to the electrostatic components, laminar flow components, and light source, and uniformly regulates the voltage, airflow, and light source parameters, enabling the entire machine to operate automatically.

[0044] The imaging medium consists of smooth microparticles of 0.5μm to 5μm and Ra < 20nm from ambient air after sorting. It relies mainly on directional refraction and has extremely low stray light, which can replicate the dispersion law of atmospheric ice crystal halos.

[0045] When steady-state microparticles are irradiated with parallel light, they produce first-order refractive dispersion. Light of different wavelengths is emitted at different angles, forming colored light bands in spatial layers and constructing a continuous three-dimensional light field.

[0046] The complete workflow of the device is as follows: Control unit 4 initiates laminar airflow, forming a stable upward airflow within imaging cavity 1; an electrostatic field is activated, bringing in aerosols from the ambient air; coarse dust settles and smooth microparticles suspend, forming uniform clouds; the light source outputs a parallel beam, causing the microparticles to produce halos, refraction, and dispersion, allowing for naked-eye observation of a three-dimensional color image in the air.

[0047] This invention is not limited to the above-described embodiments. Any equivalent substitution or simple modification of the cavity, sorting, and light source structures under the concept of this invention shall fall within the protection scope of this invention.

[0048] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A method for stereoscopic imaging using aerosol halo refraction, characterized in that, Includes the following steps: S1. Screening aerosol microparticles with a particle size of 0.5μm to 5μm and a surface roughness Ra < 20nm from the air; S2. Through the synergistic effect of electrostatic sorting, laminar airflow sorting and anti-stick coating on the wall, microparticles are purified to form a stable suspended aerosol cloud free from stray interference. S3. By irradiating a steady-state suspended aerosol cloud with a directional parallel beam, the refraction and dispersion optical mechanism of an atmospheric halo is replicated, causing the beam to undergo directional refraction and dispersion on the surface of microparticles, thus constructing a three-dimensional layered three-dimensional color light field.

2. The aerosol halo refraction stereoscopic imaging method according to claim 1, characterized in that: The electrostatic sorting is achieved by an electrostatic generator component installed in a sealed imaging cavity, generating an electrostatic field voltage of 5kV to 15kV.

3. The aerosol halo refraction stereoscopic imaging method according to claim 1, characterized in that: The laminar airflow sorting is achieved by a laminar airflow assembly located at the bottom of the imaging cavity, with an airflow velocity of 0.1 m / s to 0.5 m / s.

4. The aerosol halo refraction stereoscopic imaging method according to claim 1, characterized in that: The anti-adhesion coating on the wall is a low surface energy coating with a surface energy of no more than 20 mN / m. It is applied to the inner wall of the imaging cavity to reduce the adhesion of microparticles to the wall and to assist in the sedimentation and separation of coarse particles.

5. The aerosol halo refraction stereoscopic imaging method according to claim 1, characterized in that: The directional parallel beam is emitted by multiple sets of adjustable focusing light sources, and its spectrum covers the entire visible light spectrum.

6. An aerosol halo refraction stereoscopic imaging device, used to implement the method according to any one of claims 1 to 5, characterized in that, include: The sealed imaging cavity is a light-transmitting cavity with a transmittance of not less than 85% in the visible light band; A media sorting unit is disposed inside or connected to the imaging cavity; the media sorting unit includes an electrostatic generation component and a laminar flow airflow component. A light source unit is disposed on the top or side of the imaging cavity and is used to emit a directional parallel light beam into the imaging cavity; The control unit is electrically connected to the electrostatic generator, the laminar airflow assembly, and the light source unit, respectively.

7. The aerosol halo refraction stereoscopic imaging device according to claim 6, characterized in that: The electrostatic generator assembly includes a pair of symmetrically arranged electrode plates and a low-voltage electrostatic generator. The electrode plates are symmetrically arranged on the left and right sides of the imaging cavity.

8. The aerosol halo refraction stereoscopic imaging device according to claim 6, characterized in that: The laminar flow airflow assembly is a low-speed laminar flow generator, located at the bottom of the imaging cavity, which outputs an upward uniform laminar flow airflow.

9. The aerosol halo refraction stereoscopic imaging device according to claim 6, characterized in that: The inner wall of the imaging cavity is fully covered with an anti-stick coating, and the surface energy of the anti-stick coating is no higher than 20mN / m.

10. The aerosol halo refraction stereoscopic imaging device according to claim 6, characterized in that: The light source unit is a high-brightness LED light source or a laser light source, consisting of multiple sets of directional parallel light sources with adjustable focus and angle, covering the entire visible light spectrum.

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