CN114428443A - A cloud layer stereo projection imaging system - Google Patents

Abstract

The invention discloses a cloud layer stereo projection imaging system, which comprises a light source, an image modulation component and a projection focusing component. The light source cooperates with the image modulation component to generate projection images with different timings and form a stereoscopic projection image frame, which at least includes a first sub-frame image and a second sub-frame image; the first/second sub-frame images are projected onto the first/second sub-frame images respectively Cloud layer; under the adjustment of the projection focusing component, the sub-frame images projected to the first/second cloud layer are located in the first/second cloud layer respectively. The system adjusts the imaging positions of the projection images in sequence, so as to image between cloud layers of different heights, so as to obtain the stereo projection imaging effect between different cloud layers.

Description

A cloud layer stereo projection imaging system

technical field

The invention relates to the technical field of projection, in particular to a cloud layer stereo projection imaging system.

Background technique

At present, the technology of using laser to excite fluorescent materials to obtain visible monochromatic light or polychromatic light has been widely used in lighting, projection and other fields, which has the advantages of low cost, high efficiency and high brightness. For laser fluorescent projection, it is currently more used in fixed, close-range projection displays such as screens and walls.

Compared with traditional projection, laser phosphor projection has a longer projection distance and a larger projection content. At the same time, the height of cloud layers in the sky ranges from several hundred meters to several kilometers. Some cloud layers have low heights and high reflectivity. At night, the strong light projected by laser fluorescence will reflect or scatter when encountering clouds, which can be observed by imaging. .

The cloud layer is huge and can be displayed on it, which has a very shocking effect; at present, most of the projected images on the cloud layer are only two-dimensional graphics, or just use the height change of the cloud layer itself to perform three-dimensional stereoscopic imagery on a single cloud layer. projection. When the stereo projection environment becomes between different cloud layers, the height difference between different cloud layers is much larger than the height difference caused by the fluctuation of a single cloud layer, and the height difference between different cloud layers is the same as the difference between the projector and the cloud layers. The projection distance between them is similar. At this time, the traditional stereo projection system cannot satisfy the stereo projection between different cloud layers.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention provides a stereoscopic projection imaging system for long-distance imaging, which can adjust the imaging position according to time series and can stereoscopically display between different cloud layers with height differences.

A cloud layer stereoscopic projection imaging system, comprising: a light source for emitting a light beam; an image modulation component for modulating the light beam and forming a stereoscopic projection image, and a stereoscopic projection image frame includes at least a first subframe of time series an image and a second sub-frame image; the first sub-frame image is used for projecting to the first cloud layer; the second sub-frame image is used for projecting to the second cloud layer; the cloud layer stereoscopic projection imaging system further includes projection focusing The component is configured to adjust the imaging position of the projection image, so that the first sub-frame image is imaged in the first cloud layer, and the second sub-frame image is imaged in the second cloud layer.

In the technical solution of the present invention, the light source and the image modulation component generate a stereoscopic projection image, and a stereoscopic projection image frame includes at least a first subframe image and a second subframe image in time sequence, and the projection focusing component adjusts the first subframe according to the time sequence. The imaging positions of the image and the second subframe image are such that the first subframe image and the second subframe image are respectively imaged on the first cloud layer and the second cloud layer with different heights, so as to realize stereoscopic projection between different cloud layers.

Preferably, the one stereoscopic projection image frame further includes a third sub-frame image in time sequence, and the third sub-frame image is used for projecting to the third cloud layer; the projection focusing component adjusts the third sub-frame The imaging position of the image is such that the third sub-frame image is imaged in the third cloud layer. It can be understood that the number of sub-frame images in a stereoscopic projection image frame may also be other numbers, and the corresponding number of imaged cloud layers also increases correspondingly.

Preferably, the light source is a hybrid 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, and the laser is irradiated on the rotating color wheel to excite and emit light. The fluorescent materials forming the color wheel can be the same or different, and different fluorescent materials are excited to produce different colors of fluorescent light. .

Preferably, the image modulation component may include a spatial light modulator or a mask component.

Preferably, it also includes a processor, the processor is configured to process the first subframe image data and the second subframe image data, the image modulation component according to the first subframe image data and the second subframe image data Frame image data modulates the received light beam. It can be understood that when the number of sub-frame images is three or more, the processor correspondingly processes different sub-frame image data.

Preferably, it also includes a lidar device and a control device, the lidar device is electrically connected to the control device, and the projection focusing assembly is electrically connected to the control device; the lidar device is used to measure the height of clouds , the control device adjusts the focusing distance of the projection focusing assembly according to the cloud layer height information.

Preferably, there are at least two light sources, at least two image modulation components, and at least two projection focusing components, and the number of the light sources, image modulation components and projection focusing components is equal. ; the at least two light sources emit different light beams; the at least two image modulation components are used to modulate the different light beams and combine to form a stereoscopic projection image; the at least two projection focusing components are used to adjust 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 can be understood that the light source, the image modulation component and the projection focusing component may also be three or more groups.

Compared with the prior art, the present invention includes the following beneficial effects:

In the technical solution of the present invention, in a stereoscopic projection image frame formed by the cloud layer stereoscopic projection imaging system, the projection focusing component adjusts at least the first sub-frame image and the second sub-frame image in turn for projection imaging, so that different projection images It can clearly image on the clouds with different height differences, and realize the stereo projection between different cloud layers.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of a cloud layer stereoscopic projection imaging system according to Embodiment 1 of the present invention.

FIG. 2 is a schematic structural diagram of a cloud layer stereoscopic projection imaging system according to a modification of Embodiment 1 of the present invention.

FIG. 3 is a schematic structural diagram of a cloud layer stereoscopic projection imaging system according to Embodiment 2 of the present invention.

Detailed ways

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. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship between various components under a certain posture (as shown in the accompanying drawings). , motion situation, etc., if the specific posture changes, the directional indication also changes accordingly. The terms "first", "second", etc. in this application are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes For other steps or units inherent to these processes, methods, products or devices.

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 present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor a separate or alternative embodiment that is mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

The present invention uses different cloud layers as a screen to perform stereo projection display, so that a very shocking effect can be obtained. As mentioned in the background art, the height difference between different cloud layers is very large. When different projection images are projected on different cloud layers to form a stereoscopic projection image, the imaging positions of the different projection images need to be adjusted in sequence. The present invention provides a cloud layer stereoscopic projection imaging system that can adjust the imaging positions of different projection images according to the time sequence under the situation of facing the projection environment.

It should be noted that, before starting cloud projection, try to find a cloud layer position suitable for projection display, which is generally a cloud layer with close distance and high reflectivity at dusk or night. Generally, the height of the cloud base in the middle and low cloud layers is less than 2,500 meters, and the low cloud layers are further divided into stratocumulus, stratus and nimbus. As the cloud reflection surface of the virtual screen, the bottom of the cumulus cloud layer has a better effect. The height of the cloud base is only 0.1-2.5km, and the height is low, the area is large, the density is high, and the reflectivity is high.

In the following embodiments, the light source of the cloud layer stereo projection system is a laser fluorescent light source, specifically a mixed light source formed by exciting a fluorescent material with a laser to emit light. Further, the fluorescent material is arranged in a ring-shaped color wheel structure, and the laser is irradiated on a rotating The color wheel is excited to emit light, and the fluorescent materials forming the color wheel can be the same or different, and different fluorescent materials are excited to emit different colors of fluorescence. The light beam emitted from the light source is modulated by the image modulation component to form a stereoscopic projection image, and a stereoscopic projection image frame includes at least two different subframe images of time series, and then the imaging position of the different subframe images is adjusted by the projection focusing component, So that different sub-frame images are respectively imaged on different cloud layers to form a cloud layer stereoscopic projection image.

Example 1

Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of a cloud layer stereoscopic projection imaging system 100 according to Embodiment 1 of the present invention. The cloud layer stereoscopic projection imaging system 100 includes a light source 101 for emitting a light beam; an image modulation component 102 for modulating the light beam, and generating two different projection images A and B in sequence, and the two projection images A and B form a stereo Project the image. That is, in a stereoscopic projection image frame, A and B are used as the first subframe image and the second subframe image of the time sequence for projecting to the first and second cloud layers. The projection focusing component 103 is used to adjust the imaging positions of the projected images of A and B, so that the two projected images of A and B can be clearly imaged on the first cloud layer and the second cloud layer. It can be understood that the one stereoscopic projection image frame may further include a third sub-frame image or more sub-frame images in time series, and the corresponding number of cloud layers is also increased accordingly.

In other embodiments, the image modulation component 102 that modulates the projected image may be a spatial light modulator, or the projected image is formed by passing a light beam through a mask component. In addition, the cloud layer projection imaging system 100 may further include a processor, where the processor is configured to process the first subframe image data and the second subframe image data, and the image modulation component 102 is configured to process the first subframe image data and the second subframe image data according to the first subframe image data and the second subframe image data. The image data modulates the received illumination light.

As shown in FIG. 2, in a modification of the first embodiment, the cloud layer stereoscopic projection imaging system 100 further includes a lidar device 105 and a control device 106; the lidar device 105 is electrically connected to the control device 106, and the projection focusing assembly 103 is connected to the control device 106. The control device 106 is electrically connected. At this time, the lidar device 105 can be used to measure the heights of different cloud layers (two cloud layers are exemplarily shown in FIG. 2 ), and the measured height information can be transmitted to the control device 106 , and the control device 106 can adjust the projection in real time according to the height information of the dynamic cloud layers. The focusing distance of the focusing component 103 is adjusted to make the scene of stereo projection imaging more flexible.

Embodiment 2

Please refer to FIG. 3 , which is a schematic structural diagram of a cloud layer stereoscopic projection imaging system 200 according to Embodiment 2 of the present invention. The cloud layer stereoscopic projection imaging system 200 is similar in structure to the first embodiment, the difference is that in the second embodiment, the cloud layer stereoscopic projection imaging system 200 has two light sources 201, and the two light sources 201 emit two beams of light respectively, and the two After the beam of light passes through the two image modulation components 202 to modulate the image and the two projection focusing components 203 to adjust the imaging position, the formed projection images A and B are clearly imaged on the first cloud layer and the second cloud layer, respectively. The projection images A and B compose a stereoscopic projection image. It can be understood that there may also be three or more light sources, image modulation components and projection focusing rental components, and in this case, the stereoscopic projection image is formed by three or more projection images imaged on different cloud layers.

The system for realizing stereoscopic display projection on the cloud layer provided by the present invention includes a light source, an image modulation component and a projection focusing component. The projection focusing component adjusts the imaging positions of different subframe images in a stereoscopic projection image frame, Different projection images can be imaged between cloud layers of different heights to realize stereo projection imaging.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other.

The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied to other related technologies Fields are similarly included in the scope of patent protection 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.

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