A high-brightness cloud-based projection imaging system that achieves dynamic spatial variable effects

Abstract

The present invention provides a high-brightness cloud projection imaging system that realizes a spatially dynamic variable effect, comprising a light splitting and light combining unit, a first light source imaging unit, a second light source imaging unit, and a lens system. The first light source imaging unit projects a first image light, and the second light source imaging unit transmits a second image light. The first image light and the second image light form a composite image light via the light splitting and light combining unit. The lens system is arranged on the light output path of the light splitting and light combining unit, and relative to the lens system, the composite image light emitted by the light splitting and light combining unit is equivalent to being emitted from the focus of the lens system, so that the composite image light emitted from the light output surface forms parallel light after passing through the lens system.

Description

Technical Field

[0001] The present invention relates to the technical field of projection equipment, and in particular to a high-brightness cloud-based projection imaging system that achieves a spatially dynamic variable effect. Background Art

[0002] With the gradual development of projection technology, projection scenes are becoming more and more extensive. Projection scenes that can achieve specific visual effects, such as water curtain projection and sky curtain projection, are also gaining more and more attention.

[0003] However, when the sky is used as a screen for image projection, due to the influence of particles such as particles, water vapor, and haze that are everywhere in the air, the projection light will be scattered and other optical effects will occur during the projection process, resulting in lateral dispersion of the image or projection light column. This will cause viewers on the side of the projected image to see "light columns" or "light cones", affecting the projection display effect. Summary of the invention

[0004] In view of this, it is necessary to provide a high-brightness cloud projection imaging system that can avoid the above-mentioned problems and achieve a spatially dynamic variable effect.

[0005] A high-brightness cloud-based projection imaging system that achieves a spatially dynamically variable effect, comprising: a light-splitting and light-combining unit, comprising a first light-receiving surface, a second light-receiving surface and a light-emitting surface, wherein the first light-receiving surface and the second light-receiving surface are used to receive incident light, and the incident light incident on the first light-receiving surface and the second light-receiving surface is emitted from the light-emitting surface after being combined by the light-splitting and light-combining unit; a first light source imaging unit, which is used to project a first image light onto the first light-receiving surface; a second light source imaging unit, which is independent of the first light source imaging unit, and is used to project a second image light onto the second light-receiving surface, and the first image light and the second image light form a composite image light through the light-splitting and light-combining unit, and are emitted from the light-emitting surface; a lens system, which is arranged on the light-emitting light path of the light-splitting and light-combining unit, and relative to the lens system, the composite image light emitted by the light-splitting and light-combining unit is equivalent to being emitted from the focus of the lens system, so that the composite image light emitted from the light-emitting surface forms parallel light after passing through the lens system.

[0006] Preferably, the light splitting and combining unit is selected from one of a wavelength light combining device, a polarization light combining device and an optical etendue light combining device.

[0007] Preferably, the first light receiving surface of the light splitting and combining unit coincides with the light emitting surface, and the second light receiving surface is arranged opposite to the first light receiving surface, the first image light is reflected at the first light receiving surface and emitted to the lens system, and the second image light is transmitted at the second light receiving surface and emitted to the lens system.

[0008] Preferably, the first light source imaging unit includes a first light source module and a first lens module, and the first image light emitted by the first light source module passes through the first lens module and then is emitted toward the light splitting and light combining unit, and the second light source imaging unit includes a second light source module and a second lens module, and the second image light emitted by the second light source module passes through the second lens module and then is emitted toward the light splitting and light combining unit, wherein at least one of the first lens module and the second lens module is a zoom lens module.

[0009] Preferably, the second lens module is a zoom lens module. Through the focusing control of the zoom lens module, the focus of the image light emitted by the second light source module can be made not to coincide with the focus of the lens system, so that the imaging position of the second image light projected by the second light source imaging unit after passing through the lens system and the imaging position of the first image light projected by the first light source imaging unit after passing through the lens system change relatively.

[0010] Preferably, through the focusing control of the zoom lens module, the focus of the image light emitted by the second light source module is located on the optical axis of the lens system.

[0011] Preferably, through the focusing control of the zoom lens module, the focus of the image light emitted by the second light source module deviates from the optical axis of the lens system.

[0012] Preferably, the image information of the first image light is the same as that of the second image light.

[0013] Preferably, the first light source imaging unit and the second light source imaging unit are respectively selected from one of a laser fluorescent light source, a pure laser light source, an LED light source, and a bulb light source.

[0014] Preferably, the lens system is a zoom lens system.

[0015] Compared with the prior art, the high-brightness cloud projection imaging system for realizing the spatial dynamic variable effect provided by the embodiment of the present invention is based on the projection architecture designed by the system, and is projected by using at least two independent light source imaging units. At the same time, through the architecture design, the composite image light formed by the at least two independent light source imaging units forms a parallel light beam after passing through the lens system for cloud layer projection. At the same time, at least two independent light source imaging units are given the function of independently adjusting the focal length, so that when the projection process is affected by particles such as particles in the air, water vapor, haze, etc., so that the projection light will have optical effects such as scattering during the projection process, resulting in lateral dispersion of the image or projection light column, the final imaging surface can be adjusted by adjusting the focal length of at least two independent light source imaging units to ensure that the composite image light has only one imaging surface. Furthermore, in order to ensure that the image after focusing can still be continuously imaged on the same cloud layer, in this embodiment, the lens system is also set as a zoom lens system, and the focal length of the lens system is adjusted to achieve the purpose of enabling the image after focusing to continue to be imaged on the same cloud layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of a high-brightness cloud projection imaging system in a predetermined state that realizes a spatially dynamic variable effect provided by an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of a high-brightness cloud projection imaging system in a focusing state for achieving a spatially dynamic variable effect provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the embodiment of the present invention, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). 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. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with 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.

[0022] like Figure 1 As shown, the high-brightness cloud projection imaging system for realizing spatial dynamic variable effect provided by an embodiment of the present invention includes a first light source imaging unit 10, a second light source imaging unit 20, a light splitting and combining unit 30 and a lens system 40.

[0023] The light splitting and combining unit 30 includes a first light receiving surface 31, a second light receiving surface 32 and a light emitting surface, wherein the first light receiving surface 31 and the second light receiving surface 32 are used to receive incident light, and the incident light entering the first light receiving surface 31 and the second light receiving surface 32 is combined by the light splitting and combining unit 30 and then emitted from the light emitting surface.

[0024] In the present invention, the light splitting and combining unit 30 can be selected from one of a wavelength combining device, a polarization combining device and an optical extension combining device according to the different optical characteristics of the image light emitted by the first light source imaging unit 10 and the second light source imaging unit 20.

[0025] In this embodiment, the light splitting and combining unit 30 is a polarized light combining device, and the first light receiving surface 31 of the light splitting and combining unit 30 coincides with the light emitting surface, and the second light receiving surface 32 is arranged opposite to the first light receiving surface 31 .

[0026] The first light source imaging unit 10 is used to project the first image light 11 onto the first light receiving surface 31, and the second light source imaging unit 20 is independently arranged from the first light source imaging unit 10, and is used to project the second image light 21 onto the second light receiving surface 32. Through the light splitting and combining unit 30, the first image light 11 and the second image light 21 form a composite image light and are emitted from the light emitting surface.

[0027] In this embodiment, the first image light 11 projected by the first light source imaging unit 10 is P polarized light, the second image light 21 projected by the second light source imaging unit 20 is S polarized light, the light splitting and light combining unit 30 is a polarized light combining device that transmits S and reflects P, the first image light 11 is reflected at the first light receiving surface 31 and is emitted in the direction of the lens system 40, and the second image light 21 is transmitted at the second light receiving surface 32 and is emitted in the direction of the lens system 40. Thus, the light splitting and light combining unit 30 realizes light combining of the first image light 11 projected by the first light source imaging unit 10 and the second image light 21 projected by the second light source imaging unit 20.

[0028] It can be understood that when the light splitting and combining unit 30 adopts polarized light combining, the light splitting and combining unit 30 can also be a polarized light combining device that transmits P and reflects S.

[0029] It is understandable that in other embodiments of the present invention, according to the optical characteristics of the first image light 11 and the second image light 21, the light splitting and combining unit 30 can also be one of a wavelength combining device and an optical etendue combining device.

[0030] For example, when the first image light 11 is long-wave light and the second image light 21 is short-wave light, the light splitting and combining unit 30 can be configured as a wavelength combining device to combine the first image light 11 and the second image light 21 by reflecting or transmitting long-wave light or transmitting or reflecting short-wave light.

[0031] Similarly, when the optical expansion amount of the first image light 11 is large and the optical expansion amount of the second image light 21 is relatively small, accordingly, the light splitting and combining unit 30 can be configured as an optical expansion amount combining device to combine the first image light 11 and the second image light 21 by transmitting light with a small optical expansion amount and reflecting light with a large optical expansion amount.

[0032] It is understandable that in the present invention, the light splitting and combining unit 30 is not limited to the above three light splitting and combining devices. Any device that can combine the first image light 11 and the second image light 21 can be applied to the present invention and used as the light splitting and combining unit 30.

[0033] The lens system 40 is arranged on the output light path of the light splitting and light combining unit 30. Relative to the lens system 40, the composite image light emitted by the light splitting and light combining unit 30 is equivalent to being emitted from the focus of the lens system 40, so that the composite image light emitted from the light output surface forms parallel light after passing through the lens system 40.

[0034] In the present invention, the first light source imaging unit 10 includes a first light source module 12 and a first lens module 13, the first image light 11 emitted by the first light source module 12 passes through the first lens module 13 and then is emitted toward the light splitting and light combining unit 30, the second light source imaging unit 20 includes a second light source module 22 and a second lens module 23, the second image light 21 emitted by the second light source module 22 passes through the second lens module 23 and then is emitted toward the light splitting and light combining unit 30, wherein at least one of the first lens module 13 and the second lens module 23 is a zoom lens module.

[0035] In this embodiment, the second lens module 23 is a zoom lens module. Through the focusing control of the zoom lens module, the focus of the image light emitted by the second light source module 22 can be made not to coincide with the focus of the lens system 40, so that the imaging position of the second image light 21 projected by the second light source imaging unit 20 after passing through the lens system 40 is different from the imaging position of the first image light 11 projected by the first light source imaging unit 10 after passing through the lens system 40.

[0036] For details, please combine Figure 1 and Figure 2 As shown, when the first light source imaging unit 10 and the second light source imaging unit 20 are in a predetermined state, the first image light 11 and the second image light 21 emitted from the first light source imaging unit 10 and the second light source imaging unit 20 are combined by the light splitting and light combining unit 30 to form a composite image light. By designing the relative position relationship between the light splitting and light combining unit 30 and the lens system 40, the composite image light emitted from the light splitting and light combining unit 30 is equivalent to being emitted from the focus of the lens system 40. Therefore, after the composite image light passes through the lens system 40, a parallel light beam is formed behind the lens system. Figure 1 As shown, at this time, the parallel light beam can form a consistent projection image at position 1 and position 2.

[0037] When the influence of particles such as ubiquitous particles in the air, water vapor, haze, etc. is taken into consideration, the projection light will undergo optical effects such as scattering during the projection process, resulting in lateral dispersion of the image or projection light column. This will cause part of the light inside the parallel light column to become non-parallel light, and the non-parallel light will form another projection image after intersecting inside the light column, which can be observed, leading to the appearance of light columns or light cones inside the parallel light column.

[0038] Please combine again Figure 2 As shown, in this embodiment, the second lens module 23 is a zoom lens module, and through the focusing control of the zoom lens module in the J direction, the focus of the image light emitted by the second light source module 22 can be made not to coincide with the focus of the lens system 40, so that the imaging position of the second image light 21 projected by the second light source imaging unit 20 after passing through the lens system 40 changes, that is, changes from the original position 1 to position 2. At this time, since the light column of the first light source imaging unit 10 after passing through the lens system 40 is a parallel light column, the first light source imaging unit 10 can also project a clear image at position 2. In this way, by adjusting the imaging focus of the second lens module 23, the mixed light of the image light emitted by the first light source imaging unit 10 and the second light source imaging unit 20 forms a completely overlapping projection image at position 2, thereby eliminating the problem caused by the intersection of some light rays on the non-projection surface caused by the ubiquitous particles, water vapor, haze and other particles in the air during the projection process.

[0039] It can be understood that when the image light projected by the first light source imaging unit 10 is affected, the projection focal length of the first light source imaging unit 10 can also be adjusted by the above method.

[0040] It is understandable that when the image lights projected by the first light source imaging unit 10 and the second light source imaging unit 20 are both affected, the final projected image can be adjusted by adjusting the projection focal lengths of the first light source imaging unit 10 and the second light source imaging unit 20 respectively.

[0041] Of course, the method of adjusting the projection focal length of the first light source imaging unit 10 and / or the second light source imaging unit 20 is not limited to moving the focus back and forth along the optical axis of the lens system 40. In the actual adjustment process, the focus of the first light source imaging unit 10 and / or the second light source imaging unit 20 can also be deviated from the optical axis of the lens system 40 by focusing, as long as the aforementioned problem can be eliminated through adjustment.

[0042] Furthermore, due to the focusing operation, the projected imaging position of the first light source imaging unit 10 and / or the second light source imaging unit 20 will change relatively. Based on the immutability of the cloud height, it is usually hoped that imaging can continue on the same cloud layer. Therefore, in order to ensure that the image after focusing can still be continuously imaged on the same cloud layer, in this embodiment, the lens system 40 is also set to a zoom lens system. By adjusting the focal length of the lens system 40, the purpose of ensuring that the image after focusing can still be continuously imaged on the same cloud layer is achieved.

[0043] Optionally, in order to increase the certainty of the image, the image information of the first image light 11 and the second image light 21 may be set to be the same.

[0044] Optionally, in the present embodiment, the first light source imaging unit 10 and the second light source imaging unit 20 are respectively selected from one of a laser fluorescent light source, a pure laser light source, an LED light source, and a bulb light source.

[0045] Compared with the prior art, the high-brightness cloud projection imaging system for realizing the spatial dynamic variable effect provided by the embodiment of the present invention is based on the projection architecture designed by the system, and is projected by using at least two independent light source imaging units. At the same time, through the architecture design, the composite image light formed by the at least two independent light source imaging units forms a parallel light beam after passing through the lens system for cloud layer projection. At the same time, at least two independent light source imaging units are given the function of independently adjusting the focal length, so that when the projection process is affected by particles such as particles in the air, water vapor, haze, etc., so that the projection light will have optical effects such as scattering during the projection process, resulting in lateral dispersion of the image or projection light column, the final imaging surface can be adjusted by adjusting the focal length of at least two independent light source imaging units to ensure that the composite image light has only one imaging surface. Furthermore, in order to ensure that the image after focusing can still be continuously imaged on the same cloud layer, in this embodiment, the lens system is also set as a zoom lens system, and the focal length of the lens system is adjusted to achieve the purpose of enabling the image after focusing to continue to be imaged on the same cloud layer.

[0046] The above description is only an implementation mode of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high-brightness cloud projection imaging system that realizes a spatially dynamic variable effect, comprising: A light splitting and combining unit comprises a first light receiving surface, a second light receiving surface and a light emitting surface, wherein the first light receiving surface and the second light receiving surface are used to receive incident light, and the incident light incident on the first light receiving surface and the second light receiving surface is combined by the light splitting and combining unit and then emitted from the light emitting surface; A first light source imaging unit, which is used to project a first image light onto the first light receiving surface; the first light source imaging unit comprises a first light source module and a first lens module, and the first image light emitted by the first light source module passes through the first lens module and then projects onto the light splitting and combining unit; a second light source imaging unit, which is independent of the first light source imaging unit and is used to project a second image light onto the second light receiving surface, wherein the first image light and the second image light form a composite image light through the light splitting and light combining unit and are emitted from the light emitting surface; the second light source imaging unit comprises a second light source module and a second lens module, wherein the second image light emitted by the second light source module passes through the second lens module and then is emitted toward the light splitting and light combining unit, wherein at least one of the first lens module and the second lens module is a zoom lens module; The lens system is arranged on the output light path of the light splitting and light combining unit. Relative to the lens system, the composite image light emitted by the light splitting and light combining unit is equivalent to being emitted from the focus of the lens system, so that the composite image light emitted from the light output surface forms parallel light after passing through the lens system.

2. The cloud projection imaging system according to claim 1, characterized in that: The light splitting and combining unit is selected from one of a wavelength light combining device, a polarization light combining device and an optical etendue light combining device.

3. The cloud projection imaging system according to claim 2, characterized in that: The first light receiving surface of the light splitting and combining unit coincides with the light emitting surface, the second light receiving surface is arranged opposite to the first light receiving surface, the first image light is reflected at the first light receiving surface and emitted to the lens system, and the second image light is transmitted at the second light receiving surface and emitted to the lens system.

4. The cloud projection imaging system according to claim 1, characterized in that: The second lens module is a zoom lens module. Through the focusing control of the zoom lens module, the focus of the image light emitted by the second light source module can be made not to coincide with the focus of the lens system, so that the imaging position of the second image light projected by the second light source imaging unit after passing through the lens system is different from the imaging position of the first image light projected by the first light source imaging unit after passing through the lens system.

5. The cloud projection imaging system according to claim 4, characterized in that: Through the focusing control of the zoom lens module, the focus of the image light emitted by the second light source module is located on the optical axis of the lens system.

6. The cloud projection imaging system according to claim 4, characterized in that: Through the focus control of the zoom lens module, the focus of the image light emitted by the second light source module deviates from the optical axis of the lens system.

7. The cloud projection imaging system according to claim 1, characterized in that: The first image light and the second image light have the same image information.

8. The cloud projection imaging system according to any one of claims 1 to 7, characterized in that: The first light source imaging unit and the second light source imaging unit are respectively selected from one of a laser fluorescent light source, a pure laser light source, an LED light source, and a bulb light source.

9. The cloud projection imaging system according to claim 8, characterized in that: The lens system is a zoom lens system.

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