WO2021073086A1 - 可移动式全息投影设备和全息投影方法 - Google Patents
可移动式全息投影设备和全息投影方法 Download PDFInfo
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- WO2021073086A1 WO2021073086A1 PCT/CN2020/091083 CN2020091083W WO2021073086A1 WO 2021073086 A1 WO2021073086 A1 WO 2021073086A1 CN 2020091083 W CN2020091083 W CN 2020091083W WO 2021073086 A1 WO2021073086 A1 WO 2021073086A1
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- holographic projection
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000003993 interaction Effects 0.000 claims description 44
- 239000000758 substrate Substances 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 18
- 230000007246 mechanism Effects 0.000 claims description 14
- 238000003384 imaging method Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000010813 municipal solid waste Substances 0.000 description 4
- 230000002452 interceptive effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/22—Processes or apparatus for obtaining an optical image from holograms
Definitions
- the embodiments of the present disclosure generally relate to the field of holographic projection technology, and in particular to a movable holographic projection device, and a method for performing holographic projection using the holographic projection device.
- Holographic projection technology also known as virtual imaging technology, is a technology that uses interference and diffraction principles to record and reproduce real images of objects. It can be used for product exhibitions, automobile or clothing conferences, stage programs, interaction, bar entertainment, interactive projection in places, etc.
- Conventional holographic projection technology uses pyramids or pure semi-transparent film rear projections. If the same effective visual image is displayed, the pyramid-shaped holographic projection requires a large area, and pure holographic semi-transparent film rear projections are also based on actual conditions. The situation generally requires a space distance ranging from a few meters to a dozen meters; in addition, conventional holographic projection equipment or its holographic projection screen are generally placed on a fixed table. Therefore, the conventional holographic projection device is fixed, cannot be moved, is not portable, and is inconvenient to use, adjust and apply in multiple occasions.
- a movable holographic projection device including a movable base, a holographic projector, and a holographic projection board.
- the holographic projector is mounted on the movable base and is configured to project onto the holographic projection board.
- a light beam containing holographic image information, the holographic projection board is mounted to a movable base, and is configured to receive the light beam to form and display a virtual holographic image.
- the movable base is provided with a movable mechanism for movement on the supporting surface.
- the movable mechanism includes casters for rolling on the support surface.
- the caster includes a fixable universal wheel.
- the holographic projector is mounted on the movable base in a movable manner relative to the movable base, so that the projection distance from the holographic projector to the holographic projection board can be adjusted.
- the holographic projector is installed to be able to move closer to or away from the holographic projection plate relative to the movable base.
- the movable base includes a sliding rail along which the holographic projector is arranged to perform said movement.
- the movable base includes a lifting mechanism arranged to cause the holographic projector to perform a lifting movement to adjust the position of the light beam projected by the holographic projector onto the holographic projection board.
- the holographic projection device further includes a light shield, which is arranged on the light exit side of the holographic projector and is provided with a light exit so that the light beam projected by the holographic projector is only allowed to exit from the light exit.
- the distance of the holographic projection board relative to the movable base can be adjusted to adjust the projection distance from the holographic projector to the holographic projection board.
- the holographic projection plate includes a substrate and a holographic projection film.
- the substrate includes a front and a back surface.
- the holographic projection film is arranged on the back of the substrate.
- the part of the substrate that is not provided with the holographic projection film is transparent.
- the movable base and The holographic projector is located on the back side of the substrate.
- the movable base and the holographic projector are positioned lower than the holographic projection imaging area of the holographic projection plate, so that the movable base and the holographic projector are invisible to a viewer located on the front side of the substrate.
- the holographic projector includes an ultra-short throw holographic projector.
- the holographic projection device further includes a detection device configured to detect whether there is a moving target near the movable holographic projection device; the movable holographic projection device is configured to detect the movable object in the detection device
- the first interaction logic is executed when there is a moving target near the movable holographic projection device; the second interaction logic is executed when the detection device detects that there is no moving target near the movable holographic projection device, and the second interaction logic is different from the first interaction logic.
- a method for performing holographic projection using the holographic projection device described in the present disclosure including:
- the movable holographic projection device executes the first interaction logic
- the movable holographic projection device executes the second interaction logic, and the second interaction logic is different from the first interaction logic;
- the holographic image is played by a movable holographic projection device.
- the first interaction logic includes that the movable holographic projection device simultaneously plays the holographic image and the sound associated with the holographic image, and the second interaction logic includes that the movable holographic projection device only plays all the sounds.
- the holographic image includes that the movable holographic projection device simultaneously plays the holographic image and the sound associated with the holographic image, and the second interaction logic includes that the movable holographic projection device only plays all the sounds.
- FIG. 1 is a side perspective view showing the structure of a movable holographic projection device according to an exemplary embodiment of the present disclosure
- FIG. 2 is a side view showing the structure of a movable holographic projection device according to an exemplary embodiment of the present disclosure, in which a part of the housing of the base is removed to show the internal structure;
- FIG. 3 is a front view showing the structure of a movable holographic projection device according to an exemplary embodiment of the present disclosure
- FIG. 4 is a rear view showing the structure of a movable holographic projection device according to an exemplary embodiment of the present disclosure.
- FIG. 5 is a flowchart illustrating a method for performing holographic projection according to an exemplary embodiment of the present disclosure.
- an exemplary holographic projection device 100 is a movable holographic projection device, and mainly includes a base 110, a holographic projector 120, and a holographic projection board 130.
- the base 110 is a movable carrier, and can take various suitable forms as required, such as a cart, a cart, a box structure, and the like.
- the holographic projector 120 is arranged on the base 110 and is used to project a light beam containing the holographic image information to be displayed to the holographic projection board 130.
- the holographic projection board 130 is installed on the base 110 to receive the projected light beam from the holographic projector 120 to form and display virtual holographic images, such as pictures, videos, etc., so that the viewer can see such realistic holographic images.
- both the holographic projector and the holographic projection board used to generate holographic images are mounted on the base, and the base can be moved on the supporting surface (such as the ground or the table), so that the holographic projection device can be flexible
- the ground is arranged in a variety of applications, does not require a complicated installation process, does not need to be fixed and occupy a large space like a conventional holographic projection device, so as to adapt to a variety of spatial projection requirements.
- both the holographic projector and the holographic projection board are installed on the base, the light path between them will not or be difficult to be blocked by other obstacles, thereby providing a continuous projection display effect.
- the base is a box or cabinet structure, and a movable mechanism can be installed at the bottom of the base.
- the base 110 includes or is provided with rollers or casters 111 for rolling on a supporting surface. Rollers or casters can be installed at the bottom corners of the base, on the one hand, they can provide mobile functions, and on the other hand, they can provide support and positioning for the holographic projection device when the holographic projection device is arranged in a suitable place.
- the caster may include a fixed universal wheel, so that the position and orientation of the base and the holographic projection device can be conveniently adjusted.
- the base 110 may also include or be provided with a foot pad or a leveling mechanism 116, which may also be positioned at the bottom corner of the base and can be adjusted up and down to provide the base and the holographic projection device.
- Level adjustment function As shown in the figure, the roller or caster 111, and/or the foot pad or the leveling mechanism 116, may be at least partially hidden in the housing of the base 110. In other examples, the movable mechanism may take the form of a track.
- the holographic projector can move relative to the base, that is, be installed on the base in a manner capable of moving relative to the base, so that the projection distance from the holographic projector to the holographic projection board can be adjusted, Thereby, the size, brightness, or position of the projection screen can be adjusted as needed.
- the holographic projector may be installed to be capable of horizontal movement closer to or away from the holographic projection board relative to the base. As shown in FIG.
- the movable base 110 includes or is provided with a sliding rail 114, and the holographic projector 120 is arranged to move (such as translation) along the sliding rail, including but not limited to horizontal movement, vertical movement or tilting movement,
- the adjustment of the projection distance can be achieved by approaching or away from the holographic projection board 130.
- the holographic projector can be installed to be able to move horizontally or vertically parallel to the projection surface of the holographic projection board, or move at an angle relative to the holographic projection board or the base to adjust the size, brightness or position of the projection screen.
- the base 110 includes or is provided with a lifting mechanism 115, which can be arranged in the housing of the base, and can prompt the holographic projector 120 to move up and down to adjust the light beam projected by the holographic projector 120 onto the holographic projection plate 130. s position.
- the base 110 may include a lower base 112 and an upper base 113, which are, for example, in the form of a box.
- the holographic projector 120 is mounted on the upper base 113, and the upper base 113 may be partially It is nested in the lower seat body 112, so that the upper seat body 113 can move up and down or up and down relative to the lower seat body 112 (similar to a telescopic movement).
- the upper seat body 113 is driven by the lifting mechanism 115 to perform this movement, thereby being installed on the upper seat body.
- the holographic projector 120 on the 113 can move relative to the holographic projection plate 130 in the vertical direction.
- the distance D of the holographic projection board relative to the base can also be adjusted to adjust the projection distance from the holographic projector to the holographic projection board.
- this adjustment can be made by mounting or fixing the holographic projection board 130 to the fastener 133 of the base 110.
- the fastener may be in the form of a screw, for example.
- the above movement or adjustment greatly facilitates the scales that need to be adjusted related to the mechanical structure during the actual adjustment of the projected frame area.
- the movement of the holographic projector relative to the base or the holographic projection plate can be achieved in a variety of ways, and is not limited to those illustrated or described herein.
- the movement or adjustment described herein can be carried out automatically or under signal control by a driving mechanism (such as a motor), for example, a controller in a holographic projector or a separate controller of a holographic projection device to control this movement, or also It can be done manually by the operator or installer.
- the relative positioning between the holographic projector and the holographic projection board may be preset at the factory or preset during assembly, and the holographic projection can be realized by starting the device, and / Or it can also be adjusted on-site, such as on-site adjustment of various projection parameters, such as the focal length of the holographic projector, projection brightness, projection angle and distance, projection screen size and position, etc., for example, some of these parameters can be achieved through the above motion Adjustment.
- the base, the holographic projector, and the holographic projection board are modular, and are detachably assembled with each other, which facilitates adding different configuration modules according to different needs.
- the holographic projection device 100 further includes a light-shielding plate 140, which is arranged on the light-exit side of the holographic projector 120, and is provided with a light-exit port 141, so that all or part of the light beam projected by the holographic projector 120 is only It is allowed to emit from the light outlet, so as to prevent the light from the holographic projector from leaking to the outside and cause interference or pollution to the generated holographic image.
- a light-shielding plate 140 which is arranged on the light-exit side of the holographic projector 120, and is provided with a light-exit port 141, so that all or part of the light beam projected by the holographic projector 120 is only It is allowed to emit from the light outlet, so as to prevent the light from the holographic projector from leaking to the outside and cause interference or pollution to the generated holographic image.
- the shading plate can also block the edge part of the beam projected by the holographic projector, so that the central part where the brightness of the beam is more concentrated, or the part mainly containing the holographic projection information, or the part with a desired shape, can be projected to the Holographic projection board, which can produce clearer or brighter holographic images.
- the holographic projection board 130 is vertically installed or fixed to the base 110, such as fixed to the side of the base 110, so that people near the holographic projection device can view the generated holographic image; and holographic projection
- the projection beam of the meter 120 is angled or inclined with respect to the projection surface of the holographic projection plate 130.
- the holographic projector may be positioned so that its projection beam is substantially perpendicular to the projection surface of the holographic projection panel, or the holographic projection panel may also be oriented in other ways, such as oriented obliquely, and the present disclosure is not limited thereto.
- the holographic projection plate 130 includes a substrate and a holographic projection film.
- the substrate includes a front surface 132 facing the viewer and a back or projection surface 131 opposite to the front surface.
- the holographic projection film is disposed (for example, pasted) on the substrate
- the base 110 and the holographic projector 120 are located on the back side of the substrate.
- At least the part of the substrate where the holographic projection film is provided is transparent, for example made of glass, so that a viewer on the front side of the substrate can see the holographic image formed by the holographic projection film.
- the lower part of the substrate is fixed to the base 110, and the upper part of the substrate is provided with a holographic projection film.
- the base 110 and the holographic projector 120 are positioned lower than the holographic projection imaging area 134 of the holographic projection plate 130 (such as the area provided with a holographic projection film), so that the base 110 and the holographic The overlapping part of the projector 120 and the holographic projection plate 130 is invisible to the viewer located on the front of the substrate, thereby providing a better holographic display effect.
- the holographic projection device further includes a detection device 150, which is used to detect whether there is a moving target near the holographic projection device, such as a person, based on the detection device.
- the target detection can be performed by the holographic projection device to perform corresponding operations or interactive logic.
- the holographic projection device may execute the first interaction logic; and when the detection device detects that there is no moving target near the holographic projection device, the holographic projection device may be used by the holographic projection device.
- the second interaction logic is executed.
- the second interaction logic may be completely or partially different from the first interaction logic to better adapt to different scenarios or requirements.
- the first interaction logic includes simultaneously playing the holographic image and the sound associated with the holographic image by the holographic projection device
- the second interaction logic includes playing only the holographic image by the holographic projection device.
- holographic projection equipment can be used to guide garbage classification. Usually there is no one in the vicinity of the trash can most of the time. At this time, images with sound are not in line with the user's requirements, so there can be no people nearby. The human voice will be removed, and only the holographic image will be retained. When someone approaches the holographic projection device, the holographic projection device plays sound and holographic images at the same time to remind people to sort or promote garbage sorting.
- a sound player or speaker 160 may be arranged on the front of the holographic projection device to play appropriate audio content as required.
- the operation or interaction logic performed by the holographic projection device may include configurable content to meet different application requirements.
- the detection device 150 can be arranged in multiple positions, such as the side of the base, the front of the holographic projection board, etc., and can be a variety of suitable sensing devices or sensors, such as proximity sensors, infrared sensors, cameras, and so on.
- the detection device is in electrical communication with the holographic projector or the above-mentioned controller to transmit a signal indicating whether there is a moving target (such as a person) near the holographic projection device, and the holographic projector or the above-mentioned controller can automatically adjust the holographic projection based on this signal
- the operation or interaction logic of the device such as the played holographic image, sound, etc.
- a button 117 and a power connector 118 can be provided on the base 110.
- the button 117 can be used to initiate the above-mentioned movement or adjustment, such as the movement of the holographic projector relative to the holographic projection board or the base
- the power connector 118 is used to receive electric power from the power supply to supply power to the holographic projection equipment or various components therein, such as holographic projectors, controllers, driving mechanisms such as motors, detection devices, sound players, and other electronic components.
- the holographic projector may include an ultra-short-focus holographic projector, such as a reflective ultra-short-focus holographic projector.
- an ultra-short throw projector may refer to a projector with a projection ratio (that is, the ratio of the projection distance to the length of the bottom edge of the projected screen) is less than or equal to 0.6.
- the projection ratio of the ultra-short throw holographic projector used is less than or equal to 0.6, preferably less than or equal to 0.4.
- the projection resolution can reach 4K resolution, and the projection distance can be further shortened.
- the holographic projection distance can be successfully shortened from a few meters away from the holographic film to 30-40 cm.
- the reduction of the projection distance can significantly improve the brightness of the holographic projection, and at the same time the power consumption and heat dissipation have been reasonably balanced.
- the interference of the objects on the back to the projection effect is reduced, which greatly enhances the holographic projection effect.
- the total weight of the movable holographic projection device described in the embodiments of the present disclosure can be controlled within 80KG, and the floor space is about 0.275 square meters, for example, which improves the space utilization rate and the overall equipment Portability.
- Fig. 5 schematically illustrates a method of performing holographic projection using the above-mentioned holographic projection device according to an exemplary embodiment of the present disclosure.
- the holographic projection device is first turned on in step S1, for example, after the holographic projection device is properly positioned in the application place, the holographic projector is turned on.
- step S2 detects whether there is a person or a moving target near the holographic projection device. According to needs, this detection can be performed in real time, or intermittently or periodically.
- the holographic projection device executes the first interaction logic (see step S3); when it is detected that there is no person or a moving target near the holographic projection device, it is executed by the holographic projection device
- the second interaction logic (see step S4), the second interaction logic is different from the first interaction logic.
- holographic images can be played by the holographic projection device.
- the first interaction logic may include the holographic projection device simultaneously playing the holographic image and the sound associated with the holographic image
- the second interaction logic may include the holographic projection device playing only the holographic image.
- the operation or interaction logic performed by the holographic projection device is not limited to this, and can be set or adjusted according to actual applications and requirements.
- the holographic projection device and method provided by the present disclosure are not limited to the above-mentioned garbage classification guidance or promotion as an example, and can also be applied to a variety of occasions, such as product exhibitions, automobile/clothing conferences, stage programs, entertainment, and venue interaction. Projection, information display, popular science caravan, etc.
Abstract
提供了可移动式全息投影设备和使用该全息投影设备进行全息投影的方法。该全息投影设备(100)包括可移动底座(110)、全息投影仪(120)和全息投影板(130)，全息投影仪安置在可移动底座上，并被配置成向全息投影板投射包含全息图像信息的光束，全息投影板安装至可移动底座，并被构造成接收所述光束以形成并显示虚拟的全息影像。
Description
本公开的实施例一般地涉及全息投影技术领域，尤其涉及可移动的全息投影设备，以及采用该全息投影设备进行全息投影的方法。
全息投影技术也称虚拟成像技术，是利用干涉和衍射原理记录并再现物体的真实图像的技术，可用于产品展览、汽车或服装发布会、舞台节目、互动、酒吧娱乐、场所互动投影等。
常规全息投影技术无论是采用金字塔还是单纯的半透膜背投，如果展示相同的有效视觉画面，金字塔形式的全息投影需要极大的占地面积，而单纯的全息半透膜背投也根据实际情况一般需要几米至十几米不等的空间距离要求；此外，常规的全息投影设备或其全息投影幕一般都是安放在固定台面上。因此，常规的全息投影设备是固定的，不能移动，不便携，也不方便使用、调整和多场合应用。
发明内容
为了克服现有技术存在的上述和其它问题和缺陷中的至少一种，提出了本公开。
根据本公开的一个方面，提出了一种可移动式全息投影设备，包括可移动底座、全息投影仪和全息投影板，全息投影仪安置在可移动底座上，并被配置成向全息投影板投射包含全息图像信息的光束，全息投影板安装至可移动底座，并被构造成接收所述光束以形成并显示虚拟的全息影像。
在一些实施例中，可移动底座设置有用于在支撑表面上移动的可移动机构。
在一些实施例中，可移动机构包括用于在支撑表面上滚动的脚轮。
在一些实施例中，脚轮包括可固定的万向轮。
在一些实施例中，全息投影仪以相对于可移动底座能够运动的方 式安装在可移动底座上，使得全息投影仪到全息投影板的投影距离是能够调节的。
在一些实施例中，全息投影仪被安装成能够相对于可移动底座进行靠近或远离全息投影板的运动。
在一些实施例中，可移动底座包括滑轨，全息投影仪被布置成沿着该滑轨进行所述运动。
在一些实施例中，可移动底座包括升降机构，该升降机构被布置成促使全息投影仪进行升降运动，以调整全息投影仪投射到全息投影板上的光束的位置。
在一些实施例中，全息投影设备还包括遮光板，该遮光板布置在全息投影仪的出光一侧，并设置有出光口，使得全息投影仪投射的光束仅被允许从该出光口出射。
在一些实施例中，全息投影板相对于可移动底座的距离是能够调整的，以调节全息投影仪到全息投影板的投影距离。
在一些实施例中，全息投影板包括基板和全息投影膜，基板包括正面和背面，全息投影膜设置在基板的背面上，基板的没置有全息投影膜的部分是透明的，可移动底座和全息投影仪位于基板的背面一侧。
在一些实施例中，可移动底座和全息投影仪定位成低于全息投影板的全息投影成像区域，使得可移动底座和全息投影仪对位于基板的正面的观看者是不可见的。
在一些实施例中，全息投影仪包括超短焦全息投影仪。
在一些实施例中，全息投影设备还包括检测装置，该检测装置被配置成检测可移动式全息投影设备附近是否存在移动目标；该可移动式全息投影设备被配置成在检测装置检测到可移动式全息投影设备附近存在移动目标时执行第一交互逻辑；在检测装置检测到可移动式全息投影设备附近不存在移动目标时执行第二交互逻辑，第二交互逻辑不同于第一交互逻辑。
根据本公开的另一方面，提供了一种使用本公开中描述的全息投影设备进行全息投影的方法，包括：
检测可移动式全息投影设备附近是否存在移动目标；
在检测装置检测到可移动式全息投影设备附近存在移动目标时， 由可移动式全息投影设备执行第一交互逻辑；
在检测到可移动式全息投影设备附近不存在移动目标时，由可移动式全息投影设备执行第二交互逻辑，第二交互逻辑不同于第一交互逻辑；
在第二交互逻辑和第一交互逻辑中的每一个中，由可移动式全息投影设备播放所述全息影像。
在一些实施例中，第一交互逻辑包括由可移动式全息投影设备同时播放所述全息影像和与所述全息影像相关联的声音，第二交互逻辑包括由可移动式全息投影设备仅播放所述全息影像。
通过下文中参照附图对本公开所作的详细描述，本公开的其它目的和优点将变得明显，并可帮助对本公开有全面的理解。
通过参考附图能够更加清楚地理解本公开的特征和优点，附图是示意性的而不应理解为对本公开进行任何限制，在附图中：
图1为示出根据本公开的一个示例性实施例的可移动式全息投影设备的结构的侧视透视图；
图2为示出根据本公开的一个示例性实施例的可移动式全息投影设备的结构的侧视图，其中底座的外壳的一部分被移除，以示出其内部的结构；
图3为示出根据本公开的一个示例性实施例的可移动式全息投影设备的结构的正视图；
图4为示出根据本公开的一个示例性实施例的可移动式全息投影设备的结构的后视图；以及
图5为示出根据本公开的一个示例性实施例的进行全息投影方法的流程图。
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整的描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普 通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
另外，在下面的详细描述中，为便于解释，阐述了许多具体的细节以提供对本公开内容的实施例的全面理解。然而明显地，一个或多个实施例在没有这些具体细节的情况下也可以被实施。在其他情况下，公知的结构和装置以图示的方式体现以简化附图。
图1和2示意性地示出了根据本公开的示例性实施例的全息投影设备的结构。如图所示，示例性的全息投影设备100是一种可移动式全息投影设备，主要包括底座110、全息投影仪120和全息投影板130。底座110是可移动的载体，可以根据需要采取各种合适的形式，如载车、推车、箱式结构等。全息投影仪120安置在底座110上，用于向全息投影板130投射包含待显示的全息图像信息的光束。全息投影板130安装至底座110，用于接收来自全息投影仪120的投射光束，以形成并显示虚拟的全息影像，如图片、视频等，使得观看者能够看到这种逼真的全息影像。
在本公开的实施例中，用于产生全息影像的全息投影仪和全息投影板都安装至底座，而底座是能够在支撑表面(如地面或台面)上移动的，从而可以将全息投影设备灵活地布置在多种应用场合，无需复杂的安装过程，无需像常规全息投影设备那样固定且占用较大的空间，从而适应多种空间投影需求。此外，由于全息投影仪和全息投影板都安装至底座，在它们二者之间的光路不会或不易被其它障碍物阻断，从而能够提供连续的投影展示效果。
在图示的示例中，底座为箱体或柜体结构，在其底部可以安装有可移动机构。例如，如图2所示，底座110包括或设置有滚轮或脚轮111，用于在支撑表面上滚动。滚轮或脚轮可以安装在底座的底角处，一方面可以提供移动功能，另一方面可以在将全息投影设备布置在合适的场所时对全息投影设备提供支撑和定位作用。作为示例，脚轮可以包括可固定的万向轮，从而可以方便地调节底座和全息投影设备的位置和定向。此外，在图示的示例中，底座110还可以包括或设置有脚垫或调平机构116，其也可以定位在底座的底角处，是能够上下调整的，以对底座和全息投影设备提供调水平功能。如图所示，滚轮或 脚轮111，和/或脚垫或调平机构116，可以至少部分地隐藏在底座110的外壳内。在其他示例中，可移动机构可以采取轨道形式。
在本公开的一些示例性实施例中，全息投影仪能够相对于底座运动，即以相对于底座能够运动的方式安装在底座上，使得全息投影仪到全息投影板的投影距离是能够调节的，从而可以根据需要调整投影画面的尺寸、亮度或位置。作为示例，全息投影仪可以被安装成能够相对于底座进行靠近或远离全息投影板的水平运动。如图2所示，可移动底座110包括或设置有滑轨114，全息投影仪120被布置成沿着该滑轨进行运动(如平移)，包括但不限于水平运动、垂直运动或倾斜运动，以靠近或远离全息投影板130，实现投影距离的调节。
全息投影仪可以被安装成能够平行于全息投影板的投影面水平地或竖直地运动，或相对于全息投影板或底座成角度地运动，以调整投影画面的尺寸、亮度或位置。如图2所示，底座110包括或设置有升降机构115，其可以设置在底座的外壳内，可以促使全息投影仪120进行升降运动，以调整全息投影仪120投射到全息投影板130上的光束的位置。在一些示例中，如图1和2所示，底座110可以包括下座体112和上座体113，它们例如为箱体形式，全息投影仪120安装在上座体113上，上座体113例如可以部分地嵌套在下座体112内，从而上座体113可以相对于下座体112上下或升降运动(类似于伸缩运动)，例如由升降机构115驱使上座体113进行这种运动，从而安装在上座体113上的全息投影仪120可以在竖直方向上相对于全息投影板130运动。
在一些示例中，全息投影板相对于底座的距离D(如参见图2)也是能够调整的，以调节全息投影仪到全息投影板的投影距离。例如，通过将全息投影板130安装或固定至底座110的紧固件133可以进行这种调整。示例性地，紧固件例如可以为螺杆的形式。
上述运动或调整极大地方便了实际调整投影画幅面积过程中与的机械结构相关的需要调整的尺度。如本领域技术人员将理解的那样，可以以多种方式实现全息投影仪相对于底座或全息投影板的运动，而不限于本文中图示或描述的那些。此外，本文中描述的运动或调整可以驱动机构(如马达)自动地或受信号控制地进行，例如由全息投影仪 内的控制器或全息投影设备单独设置的控制器控制这种运动，或者也可以由操作或安装人员手动进行。另外，在利用本公开的可移动式全息投影设备时，全息投影仪和全息投影板之间的相对定位可以是出厂预设的或在组装时预设的，启动设备就能实现全息投影，和/或也是可以现场调整的，如现场调整多种投影参数，如全息投影仪的焦距、投影亮度、投影角度和距离、投影画面尺寸和位置等，例如可以通过上述运动实现这些参数中的一些的调整。此外，在本公开的实施例中，底座、全息投影仪和全息投影板是模块化的，彼此之间可拆卸地组装在一起，方便根据不同需求增加不同的配置模块。
在图示的实施例中，全息投影设备100还包括遮光板140，其布置在全息投影仪120的出光一侧，并设置有出光口141，使得全息投影仪120投射的光束的全部或一部分仅允许从该出光口出射，从而避免来自全息投影仪的光泄漏到外而造成对所产生的全息影像的干扰或污染。此外，遮光板还可以遮挡全息投影仪投射的光束的边缘部分，使得光束的亮度更集中的中心部分、或主要包含全息投影信息的部分、或具有期望形状的部分，可以通过该出光口投射至全息投影板，从而可以产生更清晰的或亮度更高的全息影像。
在图示的实施例中，全息投影板130竖直地安装或固定至底座110，如固定至底座110的侧面，使得在全息投影设备附近的人可以观看到其产生的全息影像；而全息投影仪120的投射光束相对于全息投影板130的投影面成角度或倾斜。在其他示例中，根据需要，全息投影仪可以定位成使得其投影光束大致垂直于全息投影板的投影面，或者全息投影板也可以以其他方式定向，如倾斜地定向，本公开不限于此。
在示例性实施例中，全息投影板130包括基板和全息投影膜，基板包括面向观看者的正面132和与该正面相反的背面或投影面131，全息投影膜设置(例如，粘贴)在基板的背面131上，底座110和全息投影仪120位于基板的背面一侧。至少基板的设置有全息投影膜的部分是透明的，例如由玻璃制成，从而位于基板正面一侧的观看者可以看到由全息投影膜形成的全息影像。例如，如图1和2所示，基板的下部固定至底座110，基板的上部设置有全息投影膜。
在一些示例中，如图1-4所示，底座110和全息投影仪120定位成低于全息投影板130的全息投影成像区域134(如设置有全息投影膜的区域)，使得底座110和全息投影仪120与全息投影板130重叠的部分对位于基板的正面的观看者来说是不可见的，从而提供更好的全息展示效果。
在如图1和2所示的实施例中，全息投影设备还包括检测装置150，其例如用于检测全息投影设备附近是否存在移动目标，如人员，基于检测装置对全息投影设备附近人员或移动目标的检测，可以由全息投影设备执行对应的操作或交互逻辑。示例性地，在检测装置检测到全息投影设备附近存在移动目标时，可以由全息投影设备执行第一交互逻辑；而在检测装置检测到全息投影设备附近不存在移动目标时，可以由全息投影设备执行第二交互逻辑，第二交互逻辑可以完全或部分地不同于第一交互逻辑，以更好地适应不同的场景或需求。
在一些示例中，第一交互逻辑包括由全息投影设备同时播放全息影像和与该全息影像相关联的声音，第二交互逻辑包括由全息投影设备仅播放全息影像。例如，全息投影设备可以用于对垃圾分类的引导，通常在垃圾桶附近大多数时间内是没有人的，此时时时刻刻发出带有声音的影像非常不符合用户的要求，因此可以在附近没有人时将播放的声音去掉，仅保留全息影像。在有人接近全息投影设备，全息投影设备同时播放声音和全息影像，以提醒人员进行垃圾分类或进行垃圾分类宣传。例如，参见图3，声音播放器或扬声器160可以设置在全息投影设备的正面，以根据需要播放合适的音频内容。由全息投影设备执行的操作或交互逻辑可以包括可设置的内容，以满足不同应用要求。
作为示例，检测装置150可以设置在多个位置，如底座的侧面、全息投影板的正面等，可以多种合适的感测装置或传感器，如接近度传感器、红外传感器、相机等。检测装置与全息投影仪或上述控制器电通信，以向其传送表示全息投影设备附近是否存在移动目标(如人员)的信号，全息投影仪或上述控制器可以基于这种信号自动地调整全息投影设备的操作或交互逻辑，如播放的全息影像、声音等。
如图1和4所示，底座110上可以设置有按钮117和电源连接器 118，按钮117可以用于启动上述运动或调整，如全息投影仪相对于全息投影板或底座的运动，电源连接器118用于接收来自电源的电功率，以向全息投影设备或其中的各个部件供电，如全息投影仪、控制器、诸如马达之类的驱动机构、检测装置、声音播放器以及其他电子元件。
在本公开的实施例中描述的可移动式全息投影设备中，全息投影仪可以包括超短焦全息投影仪，如反射式超短焦全息投影仪。如本领域技术人员所理解的那样，超短焦投影仪可以指投射比(即投影距离与投射出的画面底边长度之比)小于或等于0.6的投影仪。在本文中，所采用的超短焦全息投影仪的投射比小于或等于0.6，优选地小于或等于0.4。
通过使用超短焦投影设备，可以使得投影分辨率得以达到4K的分辨率，可以进一步缩短投影距离，例如，可以将全息投影距离从距离全息膜之数米成功缩短至30～40厘米。投影距离的减小可以使得全息投影的亮度得到显著的提高，同时功耗与散热得到了合理的平衡。同时，由于投影距离的减小，背面的物体对投影效果的干扰减少，极大地增强了全息投影效果。示例性地，本公开的实施例中描述的可移动式全息投影设备的整机重量可以控制在为80KG以内，占地面积例如约为0.275平方米，提高了空间率用率与整机设备的便携性。
图5示意性地示出了根据本公开的示例性实施例的、使用上述全息投影设备进行全息投影的方法。如图所示，在该方法中，首先在步骤S1中开启全息投影设备，如在将全息投影设备合适地定位在应用场所后，开启全息投影仪。
在步骤S2中，(例如由检测装置)检测全息投影设备附近是否存在人员或移动目标，根据需要，这种检测可以实时地进行，也可以间断地或周期性地进行。在检测到全息投影设备附近存在人员或移动目标时，由全息投影设备执行第一交互逻辑(参见步骤S3)；而在检测到全息投影设备附近不存在人员或移动目标时，由全息投影设备执行第二交互逻辑(参见步骤S4)，第二交互逻辑不同于第一交互逻辑。在一些示例中，在第二交互逻辑和第一交互逻辑二者中，都可以由全息投影设备播放全息影像。例如，第一交互逻辑可以包括由全息投影设备 同时播放全息影像和与该全息影像相关联的声音，第二交互逻辑可以包括由全息投影设备仅播放全息影像。由全息投影设备执行的操作或交互逻辑不限于此，可以根据实际应用和需求进行设置或调整。
可以理解，本公开提供的全息投影设备和方法不限于上述作为示例的上述垃圾分类引导或宣传，还可以应用于多种场合，如产品展览、汽车/服装发布会、舞台节目、娱乐、场所互动投影、信息展示、科普大篷车等。
尽管已经示出和描述了本公开的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本公开的原理和精神的情况下可以对这些实施例进行变化，本公开的范围由所附权利要求及其等同物限定。
Claims (17)
- 一种可移动式全息投影设备(100)，包括可移动底座(110)、全息投影仪(120)和全息投影板(130)，全息投影仪安置在可移动底座上，并被配置成向全息投影板投射包含全息图像信息的光束，全息投影板安装至可移动底座，并被构造成接收所述光束以形成并显示虚拟的全息影像。
- 根据权利要求1所述的可移动式全息投影设备，其中可移动底座设置有用于在支撑表面上移动的可移动机构。
- 根据权利要求2所述的可移动式全息投影设备，其中可移动机构包括用于在支撑表面上滚动的脚轮(111)。
- 根据权利要求3所述的可移动式全息投影设备，其中脚轮包括可固定的万向轮。
- 根据权利要求1-4中任一项所述的可移动式全息投影设备，其中全息投影仪以相对于可移动底座能够运动的方式安装在可移动底座上，使得全息投影仪到全息投影板的投影距离是能够调节的。
- 根据权利要求5所述的可移动式全息投影设备，其中全息投影仪被安装成能够相对于可移动底座进行靠近或远离全息投影板的运动。
- 根据权利要求6所述的可移动式全息投影设备，其中可移动底座包括滑轨(114)，全息投影仪被布置成沿着该滑轨进行所述运动。
- 根据权利要求1-4和6-7中任一项所述的可移动式全息投影设备，其中可移动底座包括升降机构(115)，该升降机构被布置成促使全息投影仪进行升降运动，以调整全息投影仪投射到全息投影板上的光束的位置。
- 根据权利要求1-4和6-7中任一项所述的可移动式全息投影设备，还包括遮光板(140)，该遮光板布置在全息投影仪的出光一侧，并设置有出光口(141)，使得全息投影仪投射的光束仅被允许从该出光口出射。
- 根据权利要求1-4和6-7中任一项所述的可移动式全息投影设备，其中全息投影板相对于可移动底座的距离是能够调整的，以调节全息投影仪到全息投影板的投影距离。
- 根据权利要求1-4和6-7中任一项所述的可移动式全息投影设备，其中全息投影板包括基板和全息投影膜，基板包括正面(132)和背面(131)，全息投影膜设置在基板的背面上，基板的设置有全息投影膜的部分是透明的，可移动底座和全息投影仪位于基板的背面一侧。
- 根据权利要求11所述的可移动式全息投影设备，其中可移动底座和全息投影仪定位成低于全息投影板的全息投影成像区域，使得可移动底座和全息投影仪对位于基板的正面的观看者是不可见的。
- 根据权利要求1-4、6-7和12中任一项所述的可移动式全息投影设备，其中全息投影仪包括超短焦全息投影仪。
- 根据权利要求1-4、6-7和12中任一项所述的可移动式全息投影设备，还包括检测装置(150)，该检测装置被配置成检测可移动式全息投影设备附近是否存在移动目标，该可移动式全息投影设备被配置成在检测装置检测到可移动式全息投影设备附近存在移动目标时执行第一交互逻辑，在检测装置检测到可移动式全息投影设备附近不存在移动目标时执行第二交互逻辑，第二交互逻辑不同于第一交互逻辑。
- 根据权利要求14所述的可移动式全息投影设备，其中第一交互逻辑包括由可移动式全息投影设备同时播放所述全息影像和与所述全息影像相关联 的声音，第二交互逻辑包括由可移动式全息投影设备仅播放所述全息影像。
- 一种使用权利要求14所述的可移动式全息投影设备进行全息投影的方法，包括：检测可移动式全息投影设备附近是否存在移动目标；在检测装置检测到可移动式全息投影设备附近存在移动目标时，由可移动式全息投影设备执行第一交互逻辑；在检测到可移动式全息投影设备附近不存在移动目标时，由可移动式全息投影设备执行第二交互逻辑，第二交互逻辑不同于第一交互逻辑；其中，在第二交互逻辑和第一交互逻辑中的每一个中，由可移动式全息投影设备播放所述全息影像。
- 根据权利要求16所述的方法，其中第一交互逻辑包括由可移动式全息投影设备同时播放所述全息影像和与所述全息影像相关联的声音，第二交互逻辑包括由可移动式全息投影设备仅播放所述全息影像。
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