CN114428443A - Cloud layer stereoscopic projection imaging system - Google Patents

Cloud layer stereoscopic projection imaging system Download PDF

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Publication number
CN114428443A
CN114428443A CN202011105850.XA CN202011105850A CN114428443A CN 114428443 A CN114428443 A CN 114428443A CN 202011105850 A CN202011105850 A CN 202011105850A CN 114428443 A CN114428443 A CN 114428443A
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CN
China
Prior art keywords
projection
image
cloud
cloud layer
imaging system
Prior art date
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Pending
Application number
CN202011105850.XA
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Chinese (zh)
Inventor
龚晨晟
陈彦哲
陈晨
张贤鹏
胡飞
李屹
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Shenzhen Appotronics Corp Ltd
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Appotronics Corp Ltd
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Publication date
Application filed by Appotronics Corp Ltd filed Critical Appotronics Corp Ltd
Priority to CN202011105850.XA priority Critical patent/CN114428443A/en
Publication of CN114428443A publication Critical patent/CN114428443A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B35/00—Stereoscopic photography
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/50—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels
    • G02B30/56—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels by projecting aerial or floating images
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/398—Synchronisation thereof; Control thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H04N9/312—Driving therefor

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

The invention discloses a cloud layer stereoscopic projection imaging system which comprises a light source, an image modulation assembly and a projection focusing assembly. The light source is matched with the image modulation component to generate projection images with different time sequences and form a stereo projection image frame, and the stereo projection image frame at least comprises a first subframe image and a second subframe image; the first/second subframe images are projected to the first/second cloud layers respectively; and under the adjustment of the projection focusing component, the imaging positions of the sub-frame images projected to the first/second cloud layers respectively fall on the first/second cloud layers. The system adjusts the imaging positions of the projected images in sequence to enable the images to be formed among the cloud layers with different heights, and therefore the stereoscopic projection imaging effect among the different cloud layers is obtained.

Description

Cloud layer stereoscopic projection imaging system
Technical Field
The invention relates to the technical field of projection, in particular to a cloud layer stereoscopic projection imaging system.
Background
At present, the technology of exciting a fluorescent material with laser to obtain visible monochromatic light or polychromatic light is widely applied to the fields of illumination, projection and the like, and has the advantages of low cost, high efficiency, high brightness and the like. For laser fluorescence projection, the laser fluorescence projection is more applied to fixed and close-range projection display of screens, walls and the like.
Compared with the traditional projection, the laser fluorescence projection has longer projection distance and larger projection content. Meanwhile, the cloud layer height of the sky is from hundreds of meters to kilometers, some cloud layers are low in height and high in reflectivity, and strong light projected by laser fluorescence can be reflected or scattered when meeting the cloud layers at night, so that imaging can be observed.
The cloud layer has huge volume, can be imaged on the cloud layer and has very shocking effect; at present, most of projection images on the cloud layers are only two-dimensional images, or three-dimensional stereo projection is performed on a single cloud layer by utilizing the shape height change of the cloud layer. When the stereoscopic projection environment is changed into different cloud layers, the height difference between the different cloud layers is much larger than the height difference generated by fluctuation of a single cloud layer, and the height difference between the different cloud layers is close to the projection distance between the projector and the cloud layers, so that the traditional stereoscopic projection system cannot meet the stereoscopic projection between the different cloud layers.
Disclosure of Invention
In view of the above problems, the present invention provides a stereoscopic projection imaging system for remote imaging, adjusting the imaging position in time sequence and enabling stereoscopic display between different clouds having a height difference.
A cloud-layered stereoscopic projection imaging system, comprising: a light source for emitting a light beam; the image modulation component is used for modulating the light beam and forming a stereoscopic projection image, and at least comprises a first subframe image and a second subframe image of a time sequence in a stereoscopic projection image frame; the first sub-frame image is used for projecting to a first cloud layer; the second sub-frame image is used for projecting to a second cloud layer; the cloud layer stereoscopic projection imaging system further comprises a projection focusing component used for adjusting the imaging position of the projection image, so that the first subframe image is imaged on the first cloud layer, and the second subframe image is imaged on the second cloud layer.
In the technical scheme of the invention, the light source and the image modulation component generate a three-dimensional projection image, at least a first subframe image and a second subframe image are included in a three-dimensional projection image frame in a time sequence, and the projection focusing component adjusts the imaging positions of the first subframe image and the second subframe image according to the time sequence, so that the first subframe image and the second subframe image are respectively imaged on a first cloud layer and a second cloud layer with different heights, and the three-dimensional projection between the different cloud layers is realized.
Preferably, the stereoscopic projection image frame further comprises a time-sequential third sub-frame image, and the third sub-frame image is used for projecting to a third cloud layer; the projection focusing assembly adjusts the imaging position of the third subframe image, so that the third subframe image is imaged on the third cloud layer. It will be appreciated that the number of sub-frame images in a frame of a stereographic projection image may be other, with a corresponding increase in the number of imaging clouds.
Preferably, the light source is a mixed light source formed by exciting a fluorescent material with a laser light source. Further, the fluorescent material is arranged in a ring-shaped color wheel structure, laser is irradiated on the rotating color wheel to excite light, the fluorescent materials forming the color wheel can be the same or different, and different fluorescent materials are excited to emit fluorescent light with different colors.
Preferably, the image modulation assembly may include a spatial light modulator or a mask assembly.
Preferably, the optical system further comprises a processor for processing the first sub-frame image data and the second sub-frame image data, and the image modulation component modulates the received light beam according to the first sub-frame image data and the second sub-frame image data. It will be appreciated that when the number of sub-frame images is three or more, the processor processes the different sub-frame image data accordingly.
Preferably, the device further comprises a laser radar device and a control device, wherein the laser radar device is electrically connected with the control device, and the projection focusing assembly is electrically connected with the control device; the laser radar device is used for measuring the height of a cloud layer, and the control device adjusts the focusing distance of the projection focusing assembly according to the height information of the cloud layer.
Preferably, the number of the light sources is at least two, the number of the image modulation assemblies is at least two, the number of the projection focusing assemblies is at least two, and the number of the light sources, the number of the image modulation assemblies and the number of the projection focusing assemblies are equal; the at least two light sources emit different light beams; the at least two image modulation components are used for modulating the different light beams and combining to form a three-dimensional projection image; the at least two projection focusing assemblies are used for adjusting the imaging positions of different sub-images in a stereoscopic projection image frame, so that the different sub-images are imaged on different cloud layers. It will be appreciated that the light source, image modulation assembly and projection focusing assembly may be in three or more groups.
Compared with the prior art, the invention has the following beneficial effects:
in the technical scheme of the invention, in a stereo projection image frame formed by the cloud layer stereo projection imaging system, the projection focusing assembly sequentially adjusts at least a first subframe image and a second subframe image contained in the stereo projection image frame to perform projection imaging, so that different projection images can be clearly imaged on cloud layers with different height differences, and stereo projection between different cloud layers is realized.
Drawings
To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a cloud layer stereoscopic projection imaging system according to a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a cloud layer stereoscopic projection imaging system according to a modification of the first embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a cloud layer stereoscopic projection imaging system according to a second embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
All directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly. The terms "first", "second", etc. in this application are used to distinguish between different objects and not to describe a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The invention uses different cloud layers as screens to carry out stereoscopic projection display, thus obtaining very shocking effect. As mentioned in the background, the height difference between different clouds is very large, and when different projection images are projected on different clouds to form a stereoscopic projection image, the imaging positions of the different projection images need to be adjusted in sequence. The invention provides a cloud layer stereoscopic projection imaging system capable of adjusting imaging positions of different projection images according to time sequence under the condition of facing the projection environment.
It should be noted that before starting the cloud projection, the cloud layer position suitable for projection display is found as much as possible, which is generally a cloud layer with a high reflectivity at a short distance in the evening or in the evening. Generally, the height of the cloud base of the low cloud layer in the cloud layer is lower than twenty-five hundred meters, the low cloud layer is divided into a laminated cloud, a layer cloud and a rain layer cloud, and the reflectivity of the low cloud layer is about 65%. The cloud layer reflecting surface as the virtual screen has good effect of the bottom of the cloud layer, the height of the cloud bottom is only 0.1-2.5km, the height is low, the area is large, the density is large, and the reflectivity is high.
In the following embodiments, the light source of the cloud layer stereoscopic projection system is a laser fluorescent light source, specifically, a mixed light source formed by exciting a fluorescent material to emit light by laser, further, the fluorescent material is configured to be an annular color wheel structure, the laser irradiates on the rotating color wheel to excite light, the fluorescent material forming the color wheel may be the same or different, and different fluorescent materials are excited to emit fluorescent lights with different colors. The light source emits light beams, the light beams are modulated by the image modulation assembly to form a three-dimensional projection image, at least two different subframe images of a time sequence are included in one three-dimensional projection image frame, and then the imaging positions of the different subframe images are adjusted by the projection focusing assembly, so that the different subframe images are respectively imaged on different cloud layers to form a cloud layer three-dimensional projection image.
Example one
Referring to fig. 1, fig. 1 is a schematic structural diagram of a cloud-layer stereoscopic projection imaging system 100 according to an embodiment of the invention. The cloud layer stereoscopic projection imaging system 100 comprises a light source 101 for emitting a light beam; and the image modulation component 102 is used for modulating the light beam and generating two different projection images A and B in a time sequence mode, and A, B form a stereoscopic projection image. I.e., within a stereographic projection image frame, A, B are used as time sequential first and second sub-frame images for projection onto the first and second clouds. And the projection focusing assembly 103 is used for adjusting A, B the imaging positions of the projection images, so that A, B two projection images can be clearly imaged on the first cloud layer and the second cloud layer. It is understood that the frame of a stereographic projection image may further include a third or more sub-frame images in time sequence, and the number of corresponding clouds may be increased accordingly.
In other embodiments, the image modulation assembly 102 that modulates the projected image may be a spatial light modulator, or the projected image may be formed by passing a beam of light through a mask assembly. In addition, the cloud projection imaging system 100 may further include a processor configured to process the first sub-frame image data and the second sub-frame image data, and the image modulation component 102 may be configured to modulate the received illumination light according to the first sub-frame image data and the second sub-frame image data.
As shown in fig. 2, in a modification of the first embodiment, the cloud stereoscopic projection imaging system 100 further includes a laser radar apparatus 105 and a control apparatus 106; the laser radar device 105 is electrically connected to a control device 106, and the projection focusing assembly 103 is electrically connected to the control device 106. At this time, the laser radar device 105 may be used to measure heights of different cloud layers (fig. 2 exemplarily shows two cloud layers), the measured height information is transmitted to the control device 106, and the control device 106 may adjust the focusing distance of the projection focusing assembly 103 in real time according to the height information of the dynamic cloud layer, so that the stereoscopic projection imaging scene is more flexible.
Example two
Referring to fig. 3, fig. 3 is a schematic structural diagram of a cloud-layer stereoscopic projection imaging system 200 according to a second embodiment of the invention. Compared with the first embodiment, the cloud layer stereoscopic projection imaging system 200 has a similar structure, except that in the second embodiment, two light sources 201 of the cloud layer stereoscopic projection imaging system 200 emit two light beams, the two light beams respectively pass through two image modulation assemblies 202 to modulate images and two projection focusing assemblies 203 to adjust imaging positions, formed projection images a and B are respectively and clearly imaged on a first cloud layer and a second cloud layer, and the projection images a and B form a stereoscopic projection image. It will be appreciated that the light source, image modulation assembly and projection focusing assembly may be three or more, in which case the stereographic projection image is formed from three or more projection images imaged onto different cloud layers.
The system for realizing the stereoscopic display projection on the cloud layer comprises a light source, an image modulation component and a projection focusing component, wherein the projection focusing component can enable different projection images to be imaged between the cloud layers with different heights by adjusting the imaging positions of different sub-frame images in a stereoscopic projection image frame, so that the stereoscopic projection imaging is realized.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (7)

1. A cloud stereoscopic projection imaging system, comprising:
a light source for emitting a light beam;
the image modulation component is used for modulating the light beam and forming a stereoscopic projection image, and at least comprises a first subframe image and a second subframe image of a time sequence in a stereoscopic projection image frame; the first sub-frame image is used for projecting to a first cloud layer, and the second sub-frame image is used for projecting to a second cloud layer; the heights of the first cloud layer and the second cloud layer are different;
and the projection focusing component is used for adjusting the imaging position of the projected image, so that the first subframe image is imaged on the first cloud layer, and the second subframe image is imaged on the second cloud layer.
2. The cloud layer stereographic projection imaging system of claim 1, further comprising a time-sequenced third sub-frame image within a stereographic projection image frame, said third sub-frame image for projection onto a third cloud layer; the projection focusing assembly adjusts the imaging position of the third subframe image, so that the third subframe image is imaged on the third cloud layer.
3. The cloud layer stereoscopic projection imaging system of claim 1, wherein the light source is a hybrid light source formed by a laser light source exciting a fluorescent material.
4. The cloud layer stereoscopic projection imaging system of any one of claims 1 to 3, wherein the image modulation assembly employs a spatial light modulator or a mask assembly.
5. The cloud stereographic projection imaging system of claim 1, further comprising a processor configured to process the first and second sub-frame image data, wherein the image modulation component modulates the received light beam according to the first and second sub-frame image data.
6. The cloud deck stereographic projection imaging system of any one of claims 1-3, wherein said cloud deck stereographic projection imaging system further comprises a lidar means and a control means, said lidar means being electrically connected to said control means, said projection focusing assembly being electrically connected to said control means; the laser radar device is used for measuring the height of a cloud layer, and the control device adjusts the focusing distance of the projection focusing assembly according to the height information of the cloud layer.
7. The cloud layer stereoscopic projection imaging system of any one of claims 1 to 3, wherein the number of the light sources is at least two, the number of the image modulation assemblies is at least two, the number of the projection focusing assemblies is at least two, and the number of the light sources, the number of the image modulation assemblies and the number of the projection focusing assemblies are equal; the at least two light sources emit different light beams; the at least two image modulation components are used for modulating the different light beams and combining to form a three-dimensional projection image; the at least two projection focusing assemblies are used for adjusting the imaging positions of different sub-images in a stereoscopic projection image frame, so that the different sub-images are imaged on different cloud layers.
CN202011105850.XA 2020-10-15 2020-10-15 Cloud layer stereoscopic projection imaging system Pending CN114428443A (en)

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CN202011105850.XA CN114428443A (en) 2020-10-15 2020-10-15 Cloud layer stereoscopic projection imaging system

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CN114428443A true CN114428443A (en) 2022-05-03

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