Projector lens adjusting method and device, storage medium and computer equipment

Abstract

The invention provides a projector lens adjusting method and device, a storage medium and computer equipment, and the method comprises the steps: carrying out projection focusing in response to a focusing instruction until a lens position corresponding to a clear projection image is obtained; acquiring an installation posture of the projector and a projection angle under the installation posture; and according to the installation posture and the projection angle, finely adjusting the position of the lens to enable the projection lens to be located at a preset limit position so as to adjust the lens clearance of the projection lens. According to the invention, the focused projection lens is located at a limit position, and the influence of vibration on the projection lens is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of projector lens adjustment, and in particular to a projector lens adjustment method, device, storage medium and computer equipment. Background Art

[0002] A projector is a device that can project images or videos onto a screen. Among them, a liquid crystal projector is also called an LCD projector. A liquid crystal projector is a device that combines liquid crystal display technology with an optical system. It changes the transmittance and reflectivity by controlling the arrangement of liquid crystal molecules, thereby producing images with different gray levels and colors. The basic principle of liquid crystal projection is to use an LCD liquid crystal module to modulate the color light emitted by the light source and projected onto the screen. In order to accurately project the color of the image, it is necessary to separate the color of the light source into three colors: R, G, and B, and then merge them into one and project them onto the screen using a projection lens. Liquid crystal projectors are divided into two types: Video type that cannot be connected to a computer and Data type that can be connected to a computer due to the different electronic signals they receive. According to the different positions of the viewer and the screen, they can be divided into front projection type (Front Projector) and rear projection type (integrated with the screen) (Rear Projector). Due to the different number of LCD panels used, they can be divided into single-chip type and three-chip type.

[0003] However, when the LCD projector automatically focuses, if the tilt angle is large, it will cause uncertainty in the position of the lens after focusing. Therefore, the vibration generated by the LCD projector playing music will cause the lens to be out of focus, affecting the stability and clarity of the projected image. Summary of the invention

[0004] The purpose of the present application is to provide a projector lens adjustment method, device, storage medium and computer equipment, which can overcome the shortcomings and deficiencies in the prior art.

[0005] A first aspect of an embodiment of the present application provides a projector lens adjustment method, comprising:

[0006] In response to the focus instruction, projection focusing is performed until a lens position corresponding to a clear projection image is obtained;

[0007] Obtain the installation posture of the projector and the projection angle under the installation posture;

[0008] According to the installation posture and the projection angle, the lens position is finely adjusted so that the projection lens is located at a preset extreme position, so as to adjust the lens virtual position of the projection lens.

[0009] Furthermore, the step of obtaining the installation posture of the projector and the projection angle under the installation posture includes:

[0010] According to the gravity sensor, obtaining the installation posture of the projector;

[0011] Determining a projection direction of the projection lens according to the installation posture;

[0012] The projection angle is obtained according to the angle between the projection direction and the horizontal direction.

[0013] Further, the step of fine-tuning the lens position according to the installation posture and the projection angle so that the projection lens is located at a preset limit position to adjust the lens virtual position of the projection lens includes:

[0014] If the installation posture is a flat upward projection posture, and the upward projection angle is greater than or equal to a preset angle threshold, fine-tune the lens position so that the projection lens is located at a preset outward limit position to adjust the outward virtual position of the projection lens.

[0015] Further, the step of fine-tuning the lens position according to the installation posture and the projection angle so that the projection lens is located at a preset limit position to adjust the lens virtual position of the projection lens includes:

[0016] If the installation posture is a hanging downward projection posture, and the downward projection angle is greater than or equal to a preset angle threshold, fine-tune the lens position so that the projection lens is located at a preset inward limit position to adjust the inward movement of the lens virtual position of the projection lens.

[0017] A second aspect of an embodiment of the present application provides a projector lens adjustment device, comprising:

[0018] The focusing module is used to perform projection focusing in response to a focusing instruction until a lens position corresponding to a clear projection image is obtained;

[0019] An attitude angle acquisition module is used to obtain the installation attitude of the projector and the projection angle under the installation attitude;

[0020] The fine-tuning module is used to fine-tune the lens position according to the installation posture and the projection angle, so that the projection lens is located at a preset extreme position, so as to adjust the lens virtual position of the projection lens.

[0021] Furthermore, the posture angle acquisition module includes:

[0022] An installation posture acquisition unit, used for acquiring the installation posture of the projector according to a gravity sensor;

[0023] A projection direction determining unit, used to determine the projection direction of the projection lens according to the installation posture;

[0024] The projection angle acquisition unit is used to obtain the projection angle according to the angle between the projection direction and the horizontal direction.

[0025] Further, the fine-tuning module includes:

[0026] The lens outward movement unit is used to fine-tune the lens position if the installation posture is a flat upward projection posture and the upward projection angle is greater than or equal to a preset angle threshold, so that the projection lens is located at a preset outward limit position to adjust the lens virtual position outward of the projection lens.

[0027] Further, the fine-tuning module includes:

[0028] The lens inward movement unit is used to fine-tune the lens position if the installation posture is a hanging downward projection posture and the downward projection angle is greater than or equal to a preset angle threshold, so that the projection lens is located at a preset inward limit position to adjust the lens virtual position inward movement of the projection lens.

[0029] A third aspect of an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the projector lens adjustment method as described above are implemented.

[0030] A fourth aspect of an embodiment of the present application provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable by the processor, wherein the processor implements the steps of the projector lens adjustment method as described above when executing the computer program.

[0031] Compared with the prior art, the present application can fine-tune the lens position of the projector according to the installation posture of the projector and the projection angle under the installation posture after the projector completes the projection focus, so that the projection lens is located at a preset extreme position to adjust the lens virtual position of the projection lens. Since the projection lens is at the extreme position, the impact of vibration on the projection lens is reduced, the stability of the projection lens and its corresponding lens virtual position is improved, and the stability and clarity of the projection picture of the projector can be maintained when affected by vibration.

[0032] In order to provide a clearer understanding of the present application, the specific implementation of the present application will be described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The present invention is a flowchart of a projector lens adjustment method according to an embodiment of the present invention.

[0034] Figure 2 A schematic diagram of a projector lens in a normal state according to an embodiment of the present application.

[0035] Figure 3 A schematic diagram of a flat upward projection projector lens according to an embodiment of the present application.

[0036] Figure 4 A schematic diagram of a projector lens after outward fine-tuning according to an embodiment of the present application.

[0037] Figure 5 A schematic diagram of a ceiling-mounted downward-projecting projector lens according to an embodiment of the present application.

[0038] Figure 6 A schematic diagram of a projector lens after inward fine-tuning according to an embodiment of the present application.

[0039] 11. Motor; 111. Driving wheel; 21. Lens housing; 211. Gear; 212. Guide groove; 22. Projection lens; 221. Guide rod. DETAILED DESCRIPTION

[0040] In order to make the objectives, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0041] It should be clear that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the embodiments of the present application.

[0042] When the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. The singular forms of "a", "said" and "the" used in the present application and the appended claims are also intended to include the majority form, unless the context clearly indicates other meanings. The words "if" / "if" used herein can be interpreted as "at the time of" or "when" or "in response to determination".

[0043] In addition, in the description of this application, unless otherwise specified, "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0044] See also Figure 1 , which is a flow chart of a projector lens adjustment method according to an embodiment of the present application, comprising:

[0045] S1: In response to the focus instruction, perform projection focus until a lens position corresponding to a clear projection image is obtained.

[0046] The focus instruction may be an instruction automatically generated when the projector is turned on, or may be an instruction generated in response to a user's operation on the projector's operation panel, remote controller, or remote control software.

[0047] S2: Obtain the installation posture of the projector and the projection angle under the installation posture.

[0048] Wherein, the step S2: obtaining the installation posture of the projector and the projection angle under the installation posture comprises:

[0049] S21: Acquire the installation posture of the projector according to the gravity sensor.

[0050] The direction in which the projector is subjected to gravity can be detected by the gravity sensor, and then the installation posture of the projector can be judged as a plane upward projection posture or a hanging downward projection posture according to the direction of gravity. In some feasible embodiments, the reference directions up and down can be preset on the gravity sensor, and when the direction of gravity is close to the down direction, the installation posture of the projector is judged as a plane upward projection posture, and when the direction of gravity is close to the up direction, the installation posture of the projector is judged as a hanging downward projection posture.

[0051] S22: Determine the projection direction of the projection lens according to the installation posture.

[0052] The angular difference between the projection direction of the projection lens and the preset reference direction is 90°. After confirming the installation posture of the projector, the projection direction of the projection lens can be obtained based on the angle between the gravity direction detected by the gravity sensor and the horizontal direction.

[0053] S23: Obtaining the projection angle according to the angle between the projection direction and the horizontal direction.

[0054] S3: fine-tuning the lens position according to the installation posture and the projection angle so that the projection lens is located at a preset extreme position, so as to adjust the lens virtual position of the projection lens.

[0055] See also Figure 2Among them, the kinetic energy of the motor can be transferred to the lens housing through the connection relationship between the driving wheel connected to the motor and the meshing teeth of the lens housing, and the lens housing is provided with a guide groove for guiding the movement of the projection lens, and the outer side of the projection lens is provided with a guide rod located in the guide groove. When the lens housing rotates slightly due to the action of the motor, the guide rod moves slightly along the guide rod to drive the projection lens to move accordingly, thereby achieving the function of fine-tuning the lens position and making the projection lens located at a preset extreme position.

[0056] The step S3: fine-tuning the lens position according to the installation posture and the projection angle so that the projection lens is located at a preset limit position to adjust the lens virtual position of the projection lens, comprises:

[0057] S31: If the installation posture is a planar upward projection posture, and the upward projection angle is greater than or equal to a preset angle threshold, fine-tune the lens position so that the projection lens is located at a preset outward limit position to adjust the outward virtual position of the projection lens.

[0058] Among them, the posture of plane projection is as follows Figure 3 As shown, the preset angle threshold is 5°, and the projection lens is located at the preset outward limit position as shown in FIG. Figure 4 As shown, specifically, relative to Figure 2 , it can be seen Figure 4 The guide rod is located farther from the edge of the guide groove.

[0059] S32: If the installation posture is a hanging downward projection posture, and the downward projection angle is greater than or equal to a preset angle threshold, fine-tune the lens position so that the projection lens is located at a preset inward limit position to adjust the inward movement of the lens virtual position of the projection lens.

[0060] Among them, the posture of hoisting and dropping is as follows Figure 5 As shown, the preset angle threshold is 5° and the projection lens is located at the preset outward limit position. Figure 6 As shown, specifically, relative to Figure 2 , it can be seen Figure 6 The guide rod is located closer to the edge of the guide groove.

[0061] Compared with the prior art, the present application can fine-tune the lens position of the projector according to the installation posture of the projector and the projection angle under the installation posture after the projector completes the projection focus, so that the projection lens is located at a preset extreme position to adjust the lens virtual position of the projection lens. Since the projection lens is at the extreme position, the impact of vibration on the projection lens is reduced, the stability of the projection lens and its corresponding lens virtual position is improved, and the stability and clarity of the projection picture of the projector can be maintained when affected by vibration.

[0062] Among them, the reasons why the projection lens is located in an extreme position can improve mechanical stability include:

[0063] Design of the guide groove: The extreme position can be the position where the groove width of the guide groove becomes narrower. When the projection lens is at the extreme position, the groove width of the guide rod guide groove becomes narrower, so that the contact between the guide rod and the groove wall of the guide groove is tightened, which further increases the friction and makes the lens more difficult to move.

[0064] Fixed position at the limit: When the lens is at the preset limit position, the contact surface between the lens and the lens housing is larger and the mechanical structure is more stable. This stable structure can reduce the impact of external vibration on the lens position.

[0065] Reduced degrees of freedom: At the extreme positions, the lens has minimal degrees of freedom, which means that the range of movement of the lens when subjected to vibrations is limited, thereby reducing changes in the lens position.

[0066] Increased friction: Increased friction: When the lens is at the extreme position, the friction between the lens and the guide groove increases. This increased friction can effectively resist the displacement caused by external vibration.

[0067] A second aspect of an embodiment of the present application provides a projector lens adjustment device, comprising:

[0068] The focusing module is used to perform projection focusing in response to a focusing instruction until a lens position corresponding to a clear projection image is obtained;

[0069] An attitude angle acquisition module is used to obtain the installation attitude of the projector and the projection angle under the installation attitude;

[0070] The fine-tuning module is used to fine-tune the lens position according to the installation posture and the projection angle, so that the projection lens is located at a preset extreme position, so as to adjust the lens virtual position of the projection lens.

[0071] In a feasible embodiment, the posture angle acquisition module includes:

[0072] An installation posture acquisition unit, used for acquiring the installation posture of the projector according to a gravity sensor;

[0073] A projection direction determining unit, used to determine the projection direction of the projection lens according to the installation posture;

[0074] The projection angle acquisition unit is used to obtain the projection angle according to the angle between the projection direction and the horizontal direction.

[0075] In a feasible embodiment, the fine-tuning module includes:

[0076] The lens outward movement unit is used to fine-tune the lens position if the installation posture is a flat upward projection posture and the upward projection angle is greater than or equal to a preset angle threshold, so that the projection lens is located at a preset outward limit position to adjust the lens virtual position outward of the projection lens.

[0077] In a feasible embodiment, the fine-tuning module includes:

[0078] The lens inward movement unit is used to fine-tune the lens position if the installation posture is a hanging downward projection posture and the downward projection angle is greater than or equal to a preset angle threshold, so that the projection lens is located at a preset inward limit position to adjust the lens virtual position inward movement of the projection lens.

[0079] It should be noted that the projector lens adjustment device provided in the second embodiment of the present application only uses the division of the above-mentioned functional modules as an example when executing the projector lens adjustment method. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the projector lens adjustment device provided in the second embodiment of the present application and the projector lens adjustment method of the first embodiment of the present application belong to the same concept. The implementation process thereof is detailed in the method embodiment and will not be repeated here.

[0080] A third aspect of an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the projector lens adjustment method as described above are implemented.

[0081] A fourth aspect of an embodiment of the present application provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable by the processor, wherein the processor implements the steps of the projector lens adjustment method as described above when executing the computer program.

[0082] The device embodiments described above are merely illustrative, wherein the components described as separate parts may or may not be physically separated, and the parts displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present application. Ordinary technicians in this field can understand and implement it without creative work.

[0083] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0084] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing device to work in a specific way, so that the instructions stored in the computer-readable memory produce a product including an instruction device, which implements the function selected in the process. Figure 1 A process or multiple processes and / or boxes Figure 1 function selected in a box or multiple boxes.

[0085] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 steps for the function selected in a box or multiple boxes.

[0086] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0087] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0088] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0089] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0090] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A projector lens adjustment method, characterized in that: include: In response to the focus instruction, projection focusing is performed until a lens position corresponding to a clear projection image is obtained; Obtain the installation posture of the projector and the projection angle under the installation posture; According to the installation posture and the projection angle, the lens position is finely adjusted so that the projection lens is located at a preset extreme position, so as to adjust the lens virtual position of the projection lens.

2. The projector lens adjustment method according to claim 1, characterized in that: The step of obtaining the installation posture of the projector and the projection angle under the installation posture comprises: According to the gravity sensor, obtaining the installation posture of the projector; Determining a projection direction of the projection lens according to the installation posture; The projection angle is obtained according to the angle between the projection direction and the horizontal direction.

3. The projector lens adjustment method according to claim 1, characterized in that: The step of fine-tuning the lens position according to the installation posture and the projection angle so that the projection lens is located at a preset limit position to adjust the lens virtual position of the projection lens comprises: If the installation posture is a flat upward projection posture, and the upward projection angle is greater than or equal to a preset angle threshold, fine-tune the lens position so that the projection lens is located at a preset outward limit position to adjust the outward virtual position of the projection lens.

4. The projector lens adjustment method according to claim 1, characterized in that: The step of fine-tuning the lens position according to the installation posture and the projection angle so that the projection lens is located at a preset limit position to adjust the lens virtual position of the projection lens comprises: If the installation posture is a hanging downward projection posture, and the downward projection angle is greater than or equal to a preset angle threshold, fine-tune the lens position so that the projection lens is located at a preset inward limit position to adjust the inward movement of the lens virtual position of the projection lens.

5. A projector lens adjustment device, characterized in that: include: The focusing module is used to perform projection focusing in response to a focusing instruction until a lens position corresponding to a clear projection image is obtained; An attitude angle acquisition module is used to obtain the installation attitude of the projector and the projection angle under the installation attitude; The fine-tuning module is used to fine-tune the lens position according to the installation posture and the projection angle, so that the projection lens is located at a preset extreme position, so as to adjust the lens virtual position of the projection lens.

6. The projector lens adjustment device according to claim 5, characterized in that: The posture angle acquisition module comprises: An installation posture acquisition unit, used for acquiring the installation posture of the projector according to a gravity sensor; A projection direction determining unit, used to determine the projection direction of the projection lens according to the installation posture; The projection angle acquisition unit is used to obtain the projection angle according to the angle between the projection direction and the horizontal direction.

7. The projector lens adjustment device according to claim 5, characterized in that: The fine-tuning module comprises: The lens outward movement unit is used to fine-tune the lens position if the installation posture is a flat upward projection posture and the upward projection angle is greater than or equal to a preset angle threshold, so that the projection lens is located at a preset outward limit position to adjust the lens virtual position outward of the projection lens.

8. The projector lens adjustment device according to claim 5, characterized in that: The fine-tuning module comprises: The lens inward movement unit is used to fine-tune the lens position if the installation posture is a hanging downward projection posture and the downward projection angle is greater than or equal to a preset angle threshold, so that the projection lens is located at a preset inward limit position to adjust the lens virtual position inward movement of the projection lens.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the projector lens adjustment method according to any one of claims 1 to 4 are implemented.

10. A computer device, characterized in that: The method comprises a storage device, a processor, and a computer program stored in the storage device and executable by the processor. When the processor executes the computer program, the steps of the projector lens adjustment method according to any one of claims 1 to 4 are implemented.

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