Medium-free holographic assistance machine

Abstract

The invention provides a medium-free holographic support machine, and relates to the field of support machines, the medium-free holographic support machine comprises a shell, a cavity is formed in the shell, the bottom of the cavity is obliquely arranged, and a projection plate for projection imaging is fixedly arranged at the bottom of the cavity; the first part of the shell is provided with a first display hole, and the first display hole is communicated with the cavity; the invention has the advantages of having a dynamic visual effect while having an auditory effect, and enhancing the practicability of the product.

Description

Technical Field

[0001] The invention relates to the field of chanting aid machines, in particular to a medium-free holographic chanting aid machine. Background Art

[0002] The full name of the chanting machine is the electronic chanting machine, which is an electronic product that uses modern electronic technology and can play music automatically in a loop.

[0003] The existing chanting machine only has auditory effects and is used to play music, but has no dynamic visual effects. Users can only listen but not see. Its practicality is relatively poor and needs to be improved.

[0004] Therefore, it is necessary to provide a medium-free holographic chanting machine that has both auditory effects and dynamic visual effects to enhance the practicality of the product. Summary of the invention

[0005] The present invention provides a medium-free holographic chanting machine, comprising a shell, a cavity is arranged in the shell, the bottom of the cavity is inclined, and a projection plate for projecting imaging is fixed to the bottom of the cavity; a first display hole is opened in the first part of the shell, and the first display hole is connected to the cavity.

[0006] Further, a first angle between a first opening section of the first display hole and a horizontal plane is 40°-70°, and a second angle between the projection plate and the horizontal plane is associated with the first angle.

[0007] Furthermore, the angle between the first angle and the second angle is 25°-45°.

[0008] Furthermore, a second display hole is formed in the second portion of the shell, and the second display hole is communicated with the cavity.

[0009] Furthermore, a side of the cavity bottom close to the second part is higher than a side of the cavity bottom close to the first part, and a pattern display area is provided on the side of the cavity bottom close to the second part, and the pattern display area is located in the second display hole.

[0010] Furthermore, a third angle between the second opening cross section of the second display hole and the horizontal plane is greater than 90°.

[0011] Furthermore, the first display hole, the second display hole, and the cavity cooperate to form a handle on the top of the shell.

[0012] Furthermore, an audio player is arranged in the shell.

[0013] Furthermore, a medium-free holographic projection device is provided in the shell, and the medium-free holographic projection device cooperates with the projection plate to perform medium-free holographic projection.

[0014] Furthermore, it also includes an environmental perception component, wherein the environmental perception component is used to collect environmental brightness information; the controller is also used to: adjust the brightness and color saturation of the holographic projection of the image projection image based on the environmental brightness information collected by the environmental perception component.

[0015] Compared with the prior art, the medium-free holographic chanting machine provided by the present invention has at least the following beneficial effects:

[0016] 1. Through the medium-free holographic projection technology, images can be presented in a three-dimensional form, bringing users an unprecedented immersive experience. This experience can convey the essence of the content more vividly. The large amount of audio content and image projection images stored in the memory provide users with rich learning resources. These resources are not limited to classic recitations, but help users to fully and deeply understand the relevant culture. Through the key assembly, users can choose to play content according to their needs and preferences for personalized customization. This design meets the differentiated needs of different users and improves the practicality and attractiveness of the device. For people who seek spiritual comfort and relaxation, the medium-free holographic chanting machine provides a unique way of mental health support. Listening to music, watching image projections, and participating in meditation and other activities can help relieve stress, calm emotions, and enhance inner peace and tranquility.

[0017] 2. The side of the bottom of the cavity close to the second part is higher than the side of the bottom of the cavity close to the first part, so that the projection board is tilted toward the first part close to the shell, which is convenient for users to watch the image. Furthermore, the second angle between the projection board and the horizontal plane is associated with the first angle to avoid blocking the image holographic projection.

[0018] 3. The first display hole, the second display hole, and the cavity cooperate to form a handle at the top of the shell. When a user needs to carry the medium-free holographic chanting machine, he or she can just hold the handle with his or her hand, which makes it more convenient for the user to carry the medium-free holographic chanting machine.

[0019] 4. A pattern display area is provided on one side of the bottom of the cavity close to the second part, which improves the aesthetics of the medium-free holographic chanting machine while meeting the user's personalized pattern display needs.

[0020] 5. The environmental perception component can collect ambient brightness information in real time and automatically adjust the brightness and color saturation of the holographic projection accordingly. This adaptive adjustment function ensures that users can get the best viewing experience regardless of how the ambient light changes. In a dark environment, appropriately reducing the projection brightness and adjusting the color saturation can reduce eye fatigue and enable users to watch comfortably for longer. By precisely adjusting the brightness and color of the projection, the image of the holographic projection can be made more realistic and three-dimensional, thereby enhancing the user's sense of immersion and participation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] This specification will be further described in the form of exemplary embodiments, which will be described in detail by the accompanying drawings. These embodiments are not restrictive, and in these embodiments, the same number represents the same structure, wherein:

[0022] Figure 1 It is a front view of a medium-free holographic chanting machine according to some embodiments of this specification;

[0023] Figure 2 It is a rear view of a medium-free holographic chanting machine according to some embodiments of this specification;

[0024] Figure 3 It is a three-dimensional diagram of a medium-free holographic chanting machine according to some embodiments of this specification;

[0025] Figure 4 It is a schematic diagram of various angles shown in some embodiments of this specification.

[0026] In the figure, 1. the first part of the shell; 2. the second part of the shell; 3. the projection board; 4. the first display hole; 5. the second display hole; 6. the pattern display area; 7. the audio hole; 8. the button; 9. the handle; 10. the USB connection component; 11. the projection imaging; 12. the first hole section; 13. the horizontal plane. DETAILED DESCRIPTION

[0027] In order to more clearly illustrate the technical solutions of the embodiments of this specification, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some examples or embodiments of this specification. For ordinary technicians in this field, this specification can also be applied to other similar scenarios based on these drawings without creative work. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0028] Figure 1 is a front view of a medium-free holographic chanting machine according to some embodiments of this specification. Figure 2is a rear view of a medium-free holographic chanting machine according to some embodiments of this specification, Figure 3 is a three-dimensional diagram of a medium-free holographic chanting machine according to some embodiments of this specification, such as Figure 1-Figure 3 As shown, the medium-free holographic chanting machine includes a shell, a hollow cavity is opened in the shell, and the bottom of the cavity is inclined; a projection plate 3 for projecting imaging is fixedly provided at the bottom of the cavity, and the projection plate 3 is parallel to the bottom plane of the cavity; a display device is provided in the shell, and the display device is located below the projection plate 3; the display device projects an image onto the projection plate 3, and displays the medium-free holographic projection image through the projection plate 3; wherein, the projection plate 3 can be fixed to the bottom of the cavity by various fixed or detachable connection methods such as gluing, Velcro, welding, and bolting; the projection plate 3 can be a microchannel matrix optical waveguide plate, which is a nano-level optical material that reconstructs the light field through a special optical micromirror structure to realize interactive real images in the air, and uses the optical micromirror structure to record the intensity, angle, wavelength and other information of each light ray from the real light source in the "object space" to the light plate, and replicates the light ray that is completely mirrored with the recorded light ray in the "image space" on the other side of the array. These replicated light rays, through the refocusing process, form a real image that is a complete mirror image of the object in the "object space" at a symmetrical position in the "image space", and this process does not rely on any medium and can be clearly viewed with the naked eye; the projection plate 3 can also be other flat plates that can perform holographic projection.

[0029] It should be noted that when the projection plate 3 is set as a microchannel matrix optical waveguide plate, since the projection plate 3 is parallel to the bottom plane of the cavity, when the projection plate 3 projects the image projected by the display device, the projected image meets the visual requirements of the human eye; for example, Figure 4 As shown, when the human eye observes the image from above, the coverage angle of the human eye is 45 to 60° (the angle with the horizontal plane 13). At this time, when the projection board 3 is tilted, the angle α1 between the projected image and the horizontal plane 13 can also reach 50-80°, which just falls into the viewing angle range of the human eye from above. Therefore, the human eye only needs to simply look down to effectively observe the image. On the one hand, it reduces the energy consumed by the user when observing the image. On the other hand, it greatly improves the user experience for some special users.

[0030] In addition, no matter the projection plate 3 is a microchannel matrix optical waveguide plate or other plates capable of projection, its working principle requires sufficient refraction of light. In the refraction process, at least one of the structures of the display device and the projection plate needs to be tilted. At this time, from the perspective of economy and product aesthetics, and also to ensure that the projected product can better adapt to the viewing habits of people's eyes, tilting the projection plate 3 is a relatively preferred solution, and in order to further reduce costs, tilting the bottom of the cavity is a relatively preferred solution; it is easy to understand that the bottom of the cavity can also be set horizontally, but at the same time, the display device in the cavity needs to be tilted, or the installation method or installation angle of the projection plate 3 needs to be adjusted in other ways, so that the holographic projection can be carried out normally, that is, the projection plate 3 is usually parallel to the plane of the bottom of the cavity, and when imaging is required or the angle of the imaging needs to be adjusted and the bottom of the cavity is set horizontally, the projection plate 3 is not parallel to the plane of the bottom of the cavity, as long as normal imaging can be achieved without obstruction.

[0031] To facilitate users to observe the projected image, the first part 1 of the shell is provided with a first display hole 4, which is connected to the cavity, and a first angle α2 between a first opening section 12 of the first display hole 4 and a horizontal plane 13 is 40°-70°. By opening the first display hole 4 in the first part 1 of the shell, the user can face the first part 1 of the shell and watch the image holographic projection, and the image can be displayed in a three-dimensional form, bringing an unprecedented immersive experience to the user; wherein, because the projection image of the projection board 3 is related to the angle of the projection board 3 when the projection is performed, different first angles will affect the projection display effect. If the angle of the first angle α2 is not correct at this time (for example, the first angle α2 between the first opening section 12 of the first display hole 4 and the horizontal plane 13 is less than 40° or greater than 70°), the projection image cannot be displayed normally (for example, the top or bottom of the image is blocked or cannot be projected); further, when the angle of the first angle α2 is limited, in order to ensure that the projection of the projection board 3 can be displayed normally, it is necessary to consider the correlation between the second angle α3 between the projection board 3 and the horizontal plane 13 and the first angle α2, so as to avoid blocking the image holographic projection and facilitate the user to watch the projection image. For example, the angle α4 between the first angle α2 and the second angle α3 can be set to 25°-45°.

[0032] It is easy to understand that the settings of the first angle α2 and the second angle α3 are related to the material of the projection board 3 and the imaging requirements. Therefore, when setting the angle, it is necessary to comprehensively consider the first angle α2, the second angle α3, the material of the projection board 3, the imaging requirements, the display device and the overall specifications of the shell. For example, if the second angle α3 is set too large, it will be necessary to increase the volume of the shell, and at the same time, the hole cross-section of the first display hole 4 will also need to be increased to avoid obstruction. Such an increase in the shell will inevitably increase the material cost; that is, the settings of the projection board 3, the display device, the first angle α2, and the second angle α3 are not independent, but interrelated, and their correlation relationship has a correlation effect on both the imaging result and the production cost.

[0033] In some embodiments, the second part 2 of the shell is provided with a second display hole 5, which is connected to the cavity; the third angle between the second opening section of the second display hole 5 and the horizontal plane 13 is greater than 90°, so that the second display hole 5 is inclined toward the bottom of the shell, which is convenient for processing. The first display hole 4 is connected to the second display hole 5, and cooperates with the cavity to form a handle 9 at the top of the shell, so that when the user needs to carry the non-medium holographic chanting machine, he can just hold the handle 9 by hand, which is convenient for the user to carry the non-medium holographic chanting machine.

[0034] In some embodiments, the side of the second part 2 of the bottom of the cavity close to the shell is higher than the side of the bottom of the cavity close to the first part, so that the projection board 3 is tilted toward the first part 1 close to the shell, which is more convenient for users to watch the complete projection imaging; the side of the second part 2 of the bottom of the cavity close to the shell is provided with an inclined pattern display area 6, the pattern display area 6 is located in the second display hole 5, and the plane where the pattern display area 6 is located is parallel to the second hole section of the second display hole 5. The pattern display area 6 can be used to display a pattern, which can be pre-set or set according to the user's personalized choice; because the pattern display area 6 is tilted, and the plane where the pattern display area 6 is located is parallel to the second hole section of the second display hole 5, and the third angle between the second hole section and the horizontal plane 13 is greater than 90°, when the user views the second part 2 of the shell, he can see the pattern of the pattern display area 6 at a glance, that is, the pattern of the pattern display area 6 can be highlighted, which conforms to the viewing habits of the user's eyes.

[0035] As an example only, the pattern display area 6 can be provided with a plurality of protrusions, and the plurality of protrusions can form a lotus pattern or other patterns. There is no restriction on the arrangement of the protrusions and the formed patterns, and the top planes of the plurality of protrusions are parallel to the plane where the pattern display area is located. The formed pattern is visually beautiful and meets people's aesthetic needs. Setting relevant patterns on the chanting machine can not only increase its artistic value, but also make believers feel a sense of tranquility and harmony when using it. For users, through this pattern, they can more intuitively feel the relevant spiritual connotation, thereby increasing the aesthetics, and the plurality of protrusions are arranged to be tilted downward along the side wall of the rear shell body for easy processing; in addition, the way of forming the pattern is not necessarily in the form of protrusions, but can also be in other forms, such as concave holes, convex balls or flat patterns.

[0036] In some embodiments, an audio player is provided in the housing for playing audio content (e.g., music, human voice, animal sound, white noise, etc.). The audio player includes an audio amplifier circuit, an audio filter circuit, and a speaker, the output end of the controller is electrically connected to the input end of the audio amplifier circuit, the output end of the audio amplifier circuit is electrically connected to the input end of the audio filter circuit, and the output end of the audio filter circuit is electrically connected to the speaker.

[0037] Correspondingly, in some embodiments, the second part 2 of the shell is further provided with an audio hole 7 for use with an audio player. The audio hole 7 is usually arranged on both sides of the second aperture section of the second display hole 5. This can effectively prevent the user from watching the image holographic projection facing the first part 1 of the shell. The aesthetics is affected by the audio hole 7; of course, the audio hole 7 can also be arranged on both sides of the first aperture section 12 of the first display hole 4, so that the music can better stimulate the user and enhance the auditory effect of the music; the audio hole 7 can also be arranged on both sides of the first aperture section 12 and the second aperture section to further enhance the auditory effect of the music.

[0038] In some embodiments, a medium-free holographic projection device (ie, the aforementioned display device) is disposed in the housing, and the medium-free holographic projection device cooperates with the projection plate 3 to perform medium-free holographic projection.

[0039] Specifically, the holographic projector can be a medium-free holographic projector, a 3D projector, etc.

[0040] As an example only, a medium-free holographic projector is a holographic technology device that can directly display stereoscopic images in the air. Its structure and principle are mainly based on optical micro-mirror structure and light field reconstruction technology. The medium-free holographic projector includes:

[0041] Nano-scale optical imaging materials: such as microchannel matrix optical waveguide plates, which are the core materials for realizing medium-free holographic projection. They use optical micro-mirror structures to record and replicate light.

[0042] Light source system: includes laser or other high-brightness light source, which is used to produce light of sufficient intensity for imaging.

[0043] Control system: responsible for controlling the switch, brightness and direction of the light source, as well as adjusting the parameters of the optical imaging material to achieve accurate light field reconstruction.

[0044] Imaging unit: Located on one side of the array of optical imaging materials, it is used to receive light from the real light source in the "object space" and record information such as its intensity, angle and wavelength.

[0045] The principle of the medium-free holographic projector is mainly based on light field reconstruction technology. The specific process is as follows:

[0046] Light recording: When the light from the real light source is directed to the imaging unit, the optical micromirror structure records the intensity, angle, wavelength and other information of each light ray. This information is the basis for subsequent light field reconstruction.

[0047] Light replication: On the other side of the array (i.e., the “image space”), the optical imaging material will replicate the light that is completely mirrored to the original light based on the recorded light information. These replicated light rays form a light field in space that is completely mirrored to the real light source.

[0048] Light field reconstruction: Through the refocusing process, these replicated light rays form a real image that is completely mirrored with the object in the "object space" at a symmetrical position in the "image space". This real image does not rely on any physical medium and can be directly observed with the naked eye.

[0049] 3D Stereo Effect: Since the light field reconstruction is performed in 3D space, the observer can see the 3D effect of the projected image from different angles. This effect has a higher sense of reality and immersion compared with traditional flat display technology.

[0050] In some embodiments, the side walls of the first part 1 and the second part 2 of the shell are both convex outward, so that the space size of the cavity can be expanded, so that components (for example, audio players, holographic projectors, etc.) can be stored more conveniently; at the same time, when the side walls of the first part 1 and the second part 2 of the shell are both convex outward in an arc shape, the second hole cross-section of the first display hole 4 and the second hole cross-section of the second display hole 5 can be elliptical, and the elliptical first display hole 4 can make the human eye focus on the focus of the ellipse when the human eye observes the image, and because the bottom of the cavity is inclined, the human eye can be concentrated near the upper focus of the ellipse of the first display hole 4, so that the effect of the image near the area is better observed by people, and the stimulation of the imaging to people is enhanced, thereby improving the user experience; similarly, the lower focus of the second display hole 5 will also be paid attention to, and combined with the inclined pattern display area 6, the pattern of the pattern display area 6 is further highlighted, so that the pattern displayed in the pattern display area 6 can be focused on, thereby improving the user experience. As an example only, the side walls of the first part 1 and the second part 2 of the shell are both bulged outward, so that the shell can be eggshell-shaped, which is aesthetically pleasing and expands the space of the cavity.

[0051] In some embodiments, the bottom of the shell is configured as a flat structure, which is convenient for users to place the medium-free holographic chanting machine.

[0052] In some embodiments, a controller is further provided in the cavity, and a button 8 for use with the controller is further provided on the first part 1 of the shell, and the controller is used to switch the holographic projection content based on the operation of the button 8; wherein the button 8 is usually arranged below the cut-out section of the first display hole 4. This is because when the side walls of the first part 1 of the shell and the second part 2 of the shell are both protruded outward in an arc shape, people's eyes will be attracted by the protruding parts, so that the button 8 is easily observed by the human eye, so that when the user wants to switch the imaging content, he can quickly adjust and switch, that is, the setting method of the button 8 is associated with the protrusion of the side wall of the shell, and this association can produce new technical effects compared with other setting methods.

[0053] Specifically, the user can adjust the volume, brightness, audio content and / or image projection image through button 8; in addition, the controller can also process the audio content stored in the memory and the image projection image stored in the memory based on the user's button information.

[0054] In some embodiments, the controller processes the audio content stored in the memory based on the key information of the user, including:

[0055] Based on the key information of the user, the target audio content is determined from the audio content stored in the memory.

[0056] In some embodiments, the controller processes the image projected image stored in the memory, including:

[0057] Based on the target audio content, a target image projection image is determined from the image projection images stored in the memory.

[0058] In some embodiments, the environment sensing component is used to collect environment brightness information;

[0059] The controller is also used to:

[0060] Based on the ambient brightness information collected by the ambient perception component, the brightness and color saturation of the holographic projection of the image projection image are adjusted.

[0061] Specifically, the controller may generate an ambient brightness sequence based on the ambient brightness information collected by the ambient sensing component, wherein the ambient brightness sequence is composed of ambient brightness information at multiple time points collected by the ambient sensing component in a current brightness detection cycle.

[0062] The controller can calculate the credibility of the ambient brightness sequence according to the following formula:

[0063]

[0064] Among them, R is the credibility of the ambient brightness sequence, L n is the ambient brightness at the nth time point included in the ambient brightness sequence, and N is the total number of time points included in the ambient brightness sequence.

[0065] When the credibility of the ambient brightness sequence is greater than a preset credibility threshold, the ambient brightness mean of the ambient brightness sequence is calculated, and based on the ambient brightness mean, the brightness and color saturation of the holographic projection of the image projection image are adjusted.

[0066] For example, the mean ambient brightness of an ambient brightness sequence can be calculated based on the following formula:

[0067]

[0068] Among them, L avergage is the mean value of the ambient brightness of the ambient brightness sequence.

[0069] The brightness and color saturation of the holographic projection of the image projection image can be adjusted based on the following formula:

[0070]

[0071] Among them, l aim is the brightness of the holographic projection of the image, L (average,0) P1 is the user's personalized brightness adjustment parameter, L0 is the preset projection brightness, S aimis the color saturation of the holographic projection of the image projection image, P2 is the user's personalized color saturation adjustment parameter, and S0 is the preset projection color saturation.

[0072] The user-personalized brightness adjustment parameter and the user-personalized color saturation adjustment parameter may be determined based on historical feedback information of the user.

[0073] For example, the user personalized brightness adjustment parameter and the user personalized color saturation adjustment parameter may be calculated based on the following formula:

[0074]

[0075] Among them, L (reality,m) is the brightness of the holographic projection of the image projected by the user in the mth historical adjustment, L (aim,m) is the brightness of the holographic projection of the image projection image predicted in the mth historical adjustment, M is the number of historical adjustments, S (reality,m) is the color saturation of the projected image selected by the user in the mth historical adjustment, S (aim,m) is the color saturation of the holographic projection of the image projected image predicted in the mth historical adjustment.

[0076] In some embodiments, the controller is further configured to:

[0077] Obtaining the user's historical playback records, wherein the historical playback records include audio content played by the user at multiple historical time points;

[0078] Determine the user's recommended audio content based on the user's historical playback records;

[0079] The audio player is also used to play the user's recommended audio content.

[0080] Specifically, the audio correlation between any two audio contents may be calculated based on the audio contents played by the user at multiple historical time points.

[0081] The audio correlation between two audio contents can be calculated based on the following formula:

[0082]

[0083] Among them, C (i,j) is the audio correlation between the i-th audio content and the j-th audio content, N (i,j) is the number of times the i-th audio content and the j-th audio content are played consecutively, N i is the total number of times the i-th audio content is played, N j is the total number of times the j-th audio content is played.

[0084] The playback frequency of each piece of audio content can be calculated based on the audio content played by the user at multiple historical time points:

[0085]

[0086] Among them, f i is the playback frequency of the i-th audio content, N all The total number of times all audio content was played.

[0087] According to the playing frequency of each audio content, the audio content with the highest playing frequency can be selected as the current recommended audio content. The audio content with the highest audio correlation with the current recommended audio content can be selected as the recommended audio content after the current recommended audio content is played.

[0088] By analyzing the user's historical playback records, we can understand the user's preferences, stage of practice, and possible points of interest. Based on this information, the system can recommend audio content that better suits the user's personal needs, such as specific scriptures, lectures by eminent monks, and meditation guidance. Personalized recommendations enable users to have a more intimate and satisfying experience when using the chanting machine. Users no longer need to spend a lot of time searching for the right part in a huge amount of audio content, but can directly obtain the content that best suits their needs.

[0089] In some embodiments, the controller is further configured to:

[0090] Establishing a knowledge graph, wherein the knowledge graph is used to record association parameters between audio content and image projection images;

[0091] Determine the user's recommended image projection image based on the user's recommended audio content and knowledge graph;

[0092] The holographic projector is also used to holographically project the user's recommended audio content while playing the user's recommended audio content.

[0093] Specifically, the correlation parameter between the audio content and the image projection image can be calculated based on the following formula:

[0094]

[0095] Among them, C ((i,g),2) is the association parameter between the i-th audio content and the g-th image projection image, N (i,g) The number of times the g-th image is projected when the user plays the i-th audio content.

[0096] Based on the user's recommended audio content and knowledge graph, a projection image is determined as the user's recommended image.

[0097] It is understandable that the medium-free holographic chanting machine may also include other components.

[0098] For example, the medium-free holographic chanting machine may also include a memory, which can be used to store audio content and image projection images.

[0099] Specifically, the memory may be a built-in flash memory, an external memory card, etc. The audio content stored in the memory may include multiple audios. The memory may store multiple image projection images.

[0100] For another example, the medium-free holographic chanting machine may also include a power supply, which may be used to provide power support for the memory, the controller, the audio player, and the holographic projector. The power supply includes a USB connection component 10 and a DC converter electrically connected to the USB connection component 10.

[0101] For another example, the medium-free holographic chanting machine may also include an LCD display for displaying interactive information.

[0102] For example, the currently selectable audio content number or image projection image name is displayed on the LCD display. Through the key scanning program, it is detected whether the user presses a key 8. According to the different keys 8 (such as selection keys, play keys, stop keys, etc.), the corresponding operation (such as selecting audio, playing audio, selecting image projection images, etc.) is performed.

[0103] For another example, the user presses button 8 to open the menu system, and uses the arrow keys to navigate to the "brightness" or "image" setting section. The user uses the arrow keys or dedicated brightness adjustment keys (such as "+" and "-" keys) to adjust the brightness, and uses the arrow keys or dedicated volume adjustment keys (such as "+" and "-" keys) to adjust the volume, and saves the settings after adjustment.

[0104] Finally, it should be understood that the embodiments described in this specification are only used to illustrate the principles of the embodiments of this specification. Other variations may also fall within the scope of this specification. Therefore, as an example and not a limitation, alternative configurations of the embodiments of this specification may be considered consistent with the teachings of this specification. Accordingly, the embodiments of this specification are not limited to the embodiments explicitly introduced and described in this specification.

Claims

1. A medium-free holographic chanting machine, characterized in that: It comprises a shell, a cavity is provided in the shell, and the bottom of the cavity is arranged obliquely; a projection board for projecting imaging is fixedly provided at the bottom of the cavity; a first display hole is provided in the first part of the shell, and the first display hole is connected with the cavity.

2. The medium-free holographic chanting machine according to claim 1 is characterized in that: A first angle between a first opening section of the first display hole and a horizontal plane is 40°-70°, and a second angle between the projection plate and the horizontal plane is associated with the first angle.

3. The medium-free holographic meditation machine according to claim 2 is characterized in that: The angle between the first angle and the second angle is 25°-45°.

4. The medium-free holographic meditation machine according to claim 1 is characterized in that: The second part of the shell is provided with a second display hole, and the second display hole is communicated with the cavity.

5. The medium-free holographic meditation machine according to claim 4 is characterized in that: A third angle between the second opening cross section of the second display hole and the horizontal plane is greater than 90°.

6. The medium-free holographic meditation machine according to claim 4 is characterized in that: A side of the cavity bottom close to the second part is higher than a side of the cavity bottom close to the first part, and a pattern display area is provided on the side of the cavity bottom close to the second part, and the pattern display area is located in the second display hole.

7. The medium-free holographic meditation machine according to claim 6 is characterized in that: The plane where the pattern display area is located is parallel to the second opening cross section of the second display hole.

8. The medium-free holographic meditation machine according to claim 4 is characterized in that: The first display hole, the second display hole, and the cavity cooperate to form a handle at the top of the shell.

9. The medium-free holographic meditation machine according to claim 1, characterized in that: An audio player is arranged in the shell.

10. The medium-free holographic meditation machine according to claim 4, characterized in that: The shell is provided with an acoustic hole, and the acoustic hole is located on both sides of a first hole section of the first display hole and / or a second hole section of the second display hole.

11. The medium-free holographic meditation machine according to claim 1, characterized in that: A medium-free holographic projection device is arranged in the shell, and the medium-free holographic projection device cooperates with the projection plate to perform medium-free holographic projection.

12. The medium-free holographic meditation machine according to any one of claims 1 to 11, characterized in that: Also included is an environment perception component, wherein the environment perception component is used to collect environment brightness information; The controller is also used for: Based on the ambient brightness information collected by the ambient perception component, the brightness and color saturation of the holographic projection of the image projection image are adjusted.

Images