Projector externally connected with expansion lens

Abstract

The utility model relates to the technical field of projectors, in particular to a projector externally connected with an expansion lens. Comprising a shell, an electronic system assembly, a transmission assembly, an optical machine lens and a detachable external lens, the optical machine lens is fixed and adjusted through a through hole and a lens bayonet ring on the shell, and meanwhile the safety and attractiveness of the optical machine lens are ensured through the arrangement of a lens cover, a decorative ring, a clamping groove and other structures. Furthermore, the stability and the shockproof performance of the lens are improved through the design of the lens rubber sleeve, the lens cover is matched with the outline of the external lens, and the overall sealing performance and the protection effect are enhanced. The technical effect of improving the use flexibility, stability and attractiveness of the projector is achieved.

Description

Technical Field

[0001] This application relates to the field of projector technology, and in particular to a projector with an external extension lens. Background Art

[0002] As a display device widely used in education, business, home entertainment, and many other fields, the main function of a projector is to project images or videos onto a screen or other surface to achieve large-screen display. With the continuous advancement of technology and people's increasing demands for visual experience, projector technology is also constantly developing and innovating.

[0003] In the early days, projectors had relatively limited functions, primarily used for simple image and video playback. Their lenses were typically fixed and could not meet diverse usage needs. As application scenarios have expanded, different fields have placed higher demands on the performance and functionality of projectors. For example, in education, teachers may need to flexibly switch between displaying large scenes (such as maps in geography lessons) and close-up shots (such as tiny objects in science experiments) depending on the teaching content. This poses a challenge to the projector's lens focal length and field-of-view adjustment capabilities. In business presentations, projectors need better adaptability to achieve clear and appropriately sized projection images in meeting rooms of different sizes. Furthermore, in professional fields such as film production and art exhibitions, there are even more stringent standards for the optical quality of the projected image, such as color reproduction, contrast, sharpness, and the presentation of special visual effects.

[0004] In recent years, although projectors have made significant progress in brightness and resolution, traditional projectors, relying solely on their built-in lenses, cannot fully meet the diverse and personalized needs mentioned above. The fixed optical parameters of built-in lenses, such as focal length and field of view, limit the applicability of projectors in different scenarios. Moreover, once a built-in lens is damaged or its performance degrades, the repair or replacement process is often complex and costly, potentially requiring professional technicians or even disassembling the entire projector. This not only increases repair time and costs but may also affect the overall performance and stability of the device.

[0005] Therefore, based on the above problems, the existing technology needs to be improved. Summary of the Invention

[0006] The purpose of this application is to provide a projector with an external extension lens.

[0007] The above-mentioned technical objective of this application is achieved through the following technical solution: a projector with an external extension lens, comprising a housing, the housing forming a receiving cavity, an electronic system component being disposed within the receiving cavity, the electronic system component being electrically connected to a transmission component for adjusting the position of an optical engine lens, the transmission component being disposed of an optical engine lens, the optical engine lens being electrically connected to the electronic system component, the housing having a through hole corresponding to the optical engine lens, the optical engine lens having a lens mount ring, an external lens being detachably mounted on the lens mount ring; a lens cover being detachably mounted on the housing for sealing the through hole; a decorative ring being disposed within a mounting groove, the decorative ring having an opening, the decorative ring and the mounting groove forming a snap-fit ​​groove, the lens cover having a buckle, the opening avoiding the buckle, the buckle being engaged and installed into the snap-fit ​​groove by rotating the lens cover relative to the housing; the lens cover comprising a cover body and a connecting part, the shape and size of the cover body matching the contour of the external lens.

[0008] By adopting the above technical solution, the projector's electronic system components and transmission components work together to precisely adjust the position of the optical engine lens, meeting the needs of different scenarios and improving ease of use. The through-holes on the housing provide an optical path for the optical engine lens, ensuring normal projection functionality. The lens mount ring provides a convenient interface for installing external lenses, greatly expanding the projector's functional versatility. For example, different external lenses with varying optical performance can be used to achieve better projection effects, adapting to more application scenarios and enhancing the product's practicality and competitiveness.

[0009] When the projector is not in use or during transportation, the lens cover effectively prevents dust and debris from entering the projector through the openings, protecting the internal optical engine lens and other optical components from contamination and damage. This extends the device's lifespan, reduces the failure rate caused by foreign objects, and ensures long-term stable performance. When the projector needs to be used, the detachable lens cover facilitates user operation, allowing for quick opening without obstructing normal use. The detachable design also facilitates operations such as changing external lenses, improving the user experience. When the lens cover is made of a light-transmitting material, it can achieve more innovative functions while providing dust protection. It can serve as an auxiliary display area for the projected image, displaying information such as the projector's operating status, current input source information, and operation prompts, allowing users to intuitively obtain relevant projector information without affecting the viewing experience, further enhancing the human-computer interaction experience. In addition, the light-transmitting lens cover can also be used to achieve some special projection effects or optical filter functions. For example, by changing the light transmission characteristics of the lens cover, the color, contrast and other parameters of the projected image can be adjusted, or simple image enhancement effects can be achieved, bringing users a richer and more diverse projection experience and expanding the functional boundaries of the projector.

[0010] By cleverly combining components such as the mounting groove, decorative ring, and snap-fit ​​on the lens cover, a stable and reliable connection between the lens cover and the housing is achieved. The decorative ring not only serves a decorative purpose, but the interlocking groove formed by it and the mounting groove provides a precise engagement position for the snap-fit, ensuring the lens cover's secure installation and effectively preventing accidental detachment during normal use or under certain external impacts, thus protecting the overall structural integrity of the projector. The opening on the decorative ring to avoid obstructing the snap-fit ​​makes the lens cover installation process simpler and smoother. Users only need to rotate the lens cover relative to the housing to complete the installation, greatly improving assembly efficiency and reducing installation difficulty. This is extremely convenient whether in the production assembly process or for user self-operation (such as replacing the lens cover or reinstalling after cleaning and maintenance). While ensuring functionality, ease of use is also considered, enhancing the overall product quality and user experience.

[0011] The shape and size of the cover match the contours of the external lens, making the overall appearance of the projector more harmonious and unified, enhancing the product's aesthetics and overall cohesion, and providing a more comfortable visual experience for users. Functionally, it better adapts to the shape of the external lens during installation, providing more comprehensive protection and reducing the risk of damage from external factors. Simultaneously, during operation, when users need to install or remove the external lens, the matching cover facilitates accurate positioning and operation, improving convenience and accuracy, and reducing equipment damage or inconvenience caused by misoperation. Furthermore, the suitable cover shape can also optimize the projector's aerodynamic performance to a certain extent, reducing noise caused by airflow or interference with the internal optical system, further improving the projector's performance, thereby enhancing the product's market competitiveness and providing users with a superior user experience.

[0012] Optionally, the decorative ring is provided with a plurality of positioning glass beads, and the mirror cover is provided with positioning holes.

[0013] By adopting the above technical solution, during the lens cover installation process, the cooperation between the positioning glass bead and the positioning hole can accurately position the relative position of the lens cover and the decorative ring, ensuring that the lens cover is accurately aligned with the through hole on the housing every time it is installed. This effectively avoids problems such as poor sealing and inability of the clips to properly engage caused by installation position deviations, improving the accuracy and consistency of lens cover installation. During long-term use, even if the projector is subjected to vibration or other external forces, the interaction between the positioning glass bead and the positioning hole can keep the lens cover in the correct position, maintaining a stable seal and connection, ensuring the dustproof effect inside the projector, further extending the service life of the internal optical components, improving the stability and reliability of the overall projector structure, and providing users with a better and more durable user experience.

[0014] Optionally, it also includes a lens sleeve, one end of which is provided with a first extension member, the first extension member forming a first fitting groove, the lens mount ring being fitted and installed in the first fitting groove, the first extension member being provided with a magnetic attraction member, the lens mount ring being made of metal, and the lens mount ring and the first extension member being attracted to each other.

[0015] By adopting the above technical solution, the fitting groove formed by the first extension component and the lens mount ring ensure a tight connection between the lens sleeve and the lens mount ring. This effectively prevents external dust, moisture, and other impurities from entering the projector from the connection point, providing a reliable first line of defense for the optical engine lens, ensuring the cleanliness of the optical system, and contributing to maintaining stable projection image quality. Simultaneously, the magnetic component within the first extension component works in conjunction with the metal lens mount ring to further enhance the stability of the connection between the lens sleeve and the lens mount ring. Even when the projector is subjected to a certain degree of shaking or external impact, it effectively prevents the lens sleeve from loosening or falling off, ensuring the continuity of its protective function. This not only improves the projector's dustproof and moisture-proof performance but also plays a crucial role in ensuring equipment stability, extending the lifespan of key components such as the optical engine lens, thereby improving the overall reliability and durability of the projector.

[0016] Optionally, the end of the lens sleeve away from the first extension is provided with a second extension, which is clamped by the bottom of the mounting groove and the end face of the lens cover.

[0017] By adopting the above technical solution, the lens sleeve is securely fixed between the housing and the lens cap, enhancing its stability within the projector structure. On one hand, this effectively prevents the lens sleeve from shifting or detaching during normal projector use or under slight external force, ensuring it remains in the correct position and continuously fulfills its sealing and protective function for the optical engine lens. On the other hand, through coordinated operation with other components, a more robust protective system is formed, further preventing dust, moisture, and other harmful factors from entering the projector's interior. This creates a more stable and clean working environment for optical components such as the optical engine lens, helping to extend the lifespan of optical components, maintain long-term stable performance of the projector, and improve the overall reliability and durability of the product.

[0018] Optionally, the second extension is provided with a third extension, which is parallel to the lens cover along the axial direction and the third extension is in close contact with the side of the lens cover.

[0019] By adopting the above technical solution, the tight contact between the third extension and the side of the lens cover further enhances the stability of the lens sleeve in the axial direction, effectively preventing displacement or shaking of the lens sleeve in this direction. This ensures that the lens sleeve remains in a fixed position during projector use, thus stably performing its sealing and protection function for the optical engine lens. The third extension, together with other components, constructs a more complete protective structure system. This complements the design of the mounting groove bottom and the lens cover end face clamping the second extension, further improving the overall installation firmness of the lens sleeve and reducing the possibility of loosening due to external factors. The tight contact design better fills any small gaps that may exist between components, further improving dustproof and moisture-proof protection performance. This provides a more stable and reliable working environment for the optical engine lens, helping to extend the service life of the optical engine lens and the entire projector, and improving the product's durability.

[0020] Optionally, the lens sleeve has a wall thickness of 0.5mm to 1.5mm, and a number of annular reinforcing ribs are evenly spaced on the lens sleeve.

[0021] By adopting the above technical solution, a reasonable wall thickness range ensures that the lens sleeve has sufficient structural strength to maintain its shape stability and protective function, while avoiding excessive thickness that could affect the flexibility of lens operation such as tilt-shifting. This ensures that the normal function of the projector's optical engine lens is unimpeded. Evenly spaced annular reinforcing ribs further enhance the overall strength of the lens sleeve, enabling it to better resist external pressure, impact, and stress caused by temperature changes. This effectively prevents the sleeve from deforming or cracking, thus continuously and effectively providing reliable sealing and protection for the optical engine lens, blocking the ingress of dust, moisture, and other harmful substances. This not only extends the lifespan of the lens sleeve itself and reduces equipment maintenance costs due to sleeve damage, but also creates a more stable and safer working environment for the optical engine lens, helping to maintain the long-term stable performance of the projector, improving product durability and reliability, and providing users with a more durable and superior user experience.

[0022] In summary, this application has at least the following beneficial effect:

[0023] 1. The projector has a reasonable internal structure design. The electronic system components, transmission components and optical engine lens work together to precisely adjust the position of the optical engine lens to meet the needs of different scenarios and improve the ease of use. At the same time, the through holes and lens mount rings on the shell provide convenient interfaces for the installation of external lenses and expand the versatility of functions.

[0024] 2. The lens cover and its related installation structures (such as mounting grooves, decorative rings, buckles, positioning beads, etc.) on the housing are ingeniously designed. This ensures that the lens cover can be quickly opened when the projector is in use without affecting normal use, and effectively prevents dust and other contaminants from entering the interior during non-use or transportation, protecting optical components, extending the service life of the equipment, and making installation simple, thus improving assembly efficiency and product stability.

[0025] 3. The structural design of the lens sleeve (including the first extension, magnetic attachment, second extension, third extension, appropriate wall thickness, and annular reinforcing ribs, etc.) enhances the sealing and protection of the optical engine lens, improves overall stability, prevents external impurities from entering, ensures that lens tilt-shifting and other operations are not affected, extends the service life of the lens and projector, and improves the durability of the product. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a projector with an external extension lens;

[0027] Figure 2 This is a schematic diagram of a projector with an external extension lens.

[0028] Figure 3 This is a diagram showing the installation of the mirror cover;

[0029] Figure 4 This is a schematic diagram of the decorative ring structure;

[0030] Figure 5 This is a schematic diagram of the mirror cover structure;

[0031] Figure 6 This is a schematic diagram of the lens sleeve structure;

[0032] Figure 7 yes Figure 2 Enlarged view of point A in the middle;

[0033] Figure 8 This is an assembly diagram of the lens cap being adapted to an external lens.

[0034] Figure Labels

[0035] 1. Housing; 2. Receiving cavity; 3. Transmission assembly; 4. Optical and mechanical lens; 5. Through hole; 6. Lens mount ring; 7. External lens; 8. Lens cap; 9. Mounting slot; 10. Decorative ring; 11. Opening; 12. Snap-fit ​​groove; 13. Snap-fit; 14. Positioning bead; 15. Positioning hole; 16. Lens sleeve; 17. First extension; 18. First fitting groove; 19. Second extension; 20. Third extension; 21. Annular reinforcing rib. Detailed Implementation

[0036] The present application will be further described in detail below with reference to the accompanying drawings.

[0037] Example 1

[0038] In this embodiment, refer to Figure 1-7 A projector with an external extension lens includes a housing 1, within which a receiving cavity 2 is provided. An electronic system component is housed within the receiving cavity 2. The electronic system component is electrically connected to a transmission component 3 for adjusting the position of an optical engine lens 4. The optical engine lens 4 is mounted on the transmission component 3 and is electrically connected to the electronic system component. A through hole 5 is provided on the housing 1, corresponding to the optical engine lens 4. A lens mount ring 6 is provided on the optical engine lens 4, and an external lens 7 is detachably mounted on the lens mount ring 6. This design enables flexible adjustment of the optical engine lens 4 and convenient installation of the external lens 7, improving the projector's performance and user experience.

[0039] Specifically, the transmission component 3 may include a motor, transmission gears (including a driving gear connected to the motor shaft and multiple driven gears), a guide rail, and a slider. The driving gear and driven gears transmit the motor's rotational motion to the optical engine lens 4 through precise tooth meshing. The optical engine lens 4 is slidably mounted on the guide rail, which is a high-precision linear guide rail with a specially treated surface exhibiting low friction and high rigidity. The guide rail provides precise guidance for the movement of the optical engine lens 4, ensuring smooth, linear movement without deviation or wobbling, thus guaranteeing the stability and accuracy of the projected image. The slider is fixedly connected to the optical engine lens 4 and also slides along the guide rail. When the electronic system component receives a user's instruction to adjust the left or right position of the optical engine lens 4, the control module sends a corresponding control signal to the motor, and the motor begins to rotate. The driving gear on the motor shaft rotates accordingly, driving the driven gear to rotate through gear meshing. This causes the transmission components (such as racks) connected to the slider to produce linear motion in the horizontal direction. The slider then moves the optical engine lens 4 precisely in the horizontal direction (left and right) along the guide rail. Similarly, when the front and back position of the optical engine lens 4 needs to be adjusted, the electronic system components control the motor to reverse or use different transmission paths (such as switching gear meshing methods) to generate driving forces in different directions from the transmission gear set. This drives the slider and the optical engine lens 4 to perform precise linear motion on the guide rail perpendicular to the horizontal direction (front and back), thus adjusting the front and back position of the optical engine lens 4. Throughout the process, the motor speed and direction are precisely controlled by the electronic system components according to preset algorithms and user commands to ensure that the optical engine lens 4 can accurately move to the user's desired position, meeting the requirements for image position and focus in different projection scenarios. Furthermore, to improve the accuracy and stability of the adjustment, a position sensor can be installed in the transmission component 3 to monitor the position information of the optical engine lens 4 in real time and feed it back to the electronic system components, forming a closed-loop control system to further optimize the adjustment effect.

[0040] The electronic system components mainly include a control module, a power supply module, a signal processing module, and a drive module. The control module, as the core component, can be a microprocessor or a dedicated chip. It receives commands input by the user via a remote control or control panel, such as commands to adjust the position of the optical engine lens 4 or switch the external lens 7, and generates corresponding control signals based on these commands. The power supply module provides a stable power supply to the entire electronic system components, as well as the connected transmission assembly 3 and optical engine lens 4, ensuring the normal operation of each component. It converts AC power into DC power suitable for the internal components and has overvoltage and overcurrent protection functions to ensure the safe and stable operation of the equipment. The signal processing module is mainly responsible for processing video signals from external devices (such as computers, DVD players, etc.), decoding and converting them into a signal format suitable for projection by the optical engine lens 4. The drive module receives control signals from the control module and converts them into current and voltage signals capable of driving the motor in the transmission assembly 3, thereby achieving precise control of the motor and controlling the position adjustment of the optical engine lens 4 and its interaction with the external lens 7. In addition, the electronic system component may include a storage module for storing device settings, user preferences, and other information, allowing the device to quickly resume its previous operating state upon reuse, thus enhancing the user experience. Furthermore, to enable communication and data transfer with external devices, the electronic system component also features multiple communication interfaces, such as HDMI and USB interfaces, facilitating connection to various external devices for projection playback.

[0041] Specifically, refer to Figure 3 The housing 1 can be made of aluminum alloy, which has good heat dissipation performance and high strength. The housing 1 has a through hole 5, the diameter of which can be designed according to the actual size of the optical engine lens 4. A lens cover 8 can be detachably installed on the housing 1 to seal the through hole 5. The lens cover 8 can be made of transparent plastic, which is both aesthetically pleasing and does not affect light transmission.

[0042] Reference Figure 4-5 The housing 1 has a mounting groove 9 in the annular through hole 5, and a decorative ring 10 is provided inside the mounting groove 9. The decorative ring 10 can be made of stainless steel, which has good corrosion resistance and gloss. The decorative ring 10 has an opening 11, and the decorative ring 10 and the mounting groove 9 together form a snap-fit ​​groove 12. The lens cover 8 has a buckle 13, and the opening 11 avoids the buckle 13. By rotating the lens cover 8 relative to the housing 1, the buckle 13 is engaged and installed into the snap-fit ​​groove 12. This design makes the installation and removal of the lens cover 8 more convenient, while also ensuring a tight seal.

[0043] The decorative ring 10 has several positioning beads 14, and the mirror cover 8 has positioning holes 15. The positioning beads 14 can play a positioning role during the installation of the mirror cover 8, ensuring that the mirror cover 8 is accurately installed in place. The positioning beads 14 can be made of ceramic material, which has high hardness and wear resistance.

[0044] Reference Figure 6-7 The system also includes a lens sleeve 16, with a first extension 17 at one end. The first extension 17 forms a first fitting groove 18, into which a lens mount ring 6 is fitted. A magnetic element is provided within the first extension 17. The lens mount ring 6 is made of metal, preferably galvanized iron, and the lens mount ring 6 and the first extension 17 are attracted to each other. The lens sleeve 16 can be made of silicone, providing good elasticity and sealing. The magnetic element can be made of neodymium iron boron magnets, possessing strong magnetism to ensure a secure connection between the lens sleeve 16 and the lens mount ring 6.

[0045] The lens sleeve 16 has a second extension 19 at the end furthest from the first extension 17. The second extension 19 is clamped by the bottom of the mounting groove 9 and the end face of the lens cap 8. The second extension 19 can be designed with a wave-like structure to increase the contact area with the housing 1 and improve the sealing effect. A third extension 20 is provided on the second extension 19. The third extension 20 is parallel to the lens cap 8 along the axial direction, and the third extension 20 and the side of the lens cap 8 are in close contact. This increases the contact area with the lens cap 8 and further improves the sealing performance.

[0046] The lens sleeve 16 has a wall thickness of 0.5mm to 1.5mm. Several annular reinforcing ribs 21 are evenly spaced on the lens sleeve 16. These annular reinforcing ribs 21 increase the rigidity of the lens sleeve 16 and reduce deformation caused by external pressure. The spacing between the annular reinforcing ribs 21 can be designed to be 3mm to 5mm to ensure uniform distribution.

[0047] Reference Figure 8 The lens cap 8 includes a cover body and a connecting part. The shape and size of the cover body match the contour of the external lens 7. The cover body can be designed to be round or square to accommodate external lenses 7 of different shapes. The connecting part can be designed as a rotating snap-fit ​​structure for easy installation and removal by the user.

[0048] Reference Figure 2The external lens 7 is installed by engaging a locking jaw on the outer wall of the lens mount ring 6. Before installing the external lens 7, carefully inspect the locking jaw for deformation, damage, or foreign objects. Also, check that the area around the projector lens mount ring 6 is clean and free of dust, oil, or other impurities to ensure a good installation environment. Roughly align the central axis of the external lens 7 with the central axis of the projector's optical engine lens 4. This step can be done by observing the marks or reference points on the external lens 7 and the projector housing, ensuring they are on the same axis with an error within a small range, generally no more than ±0.5mm, to guarantee optical alignment accuracy after installation. Hold the external lens 7 and align the head of the locking jaw with the slot entrance on the outer wall of the lens mount ring 6. Gently push the external lens 7 towards the projector while slightly rotating it, allowing the locking jaw to slide gradually into the slot along the guide. Maintain even pressure during the pushing process to avoid damaging the locking jaw or improper installation. When the latch begins to enter the slot, you will feel some resistance, which is normal. Continue to push slowly until the latch is fully inserted. Once the latch is fully inserted, gently pull the external lens 7 to check if it is securely installed. If the external lens 7 does not move or wobble noticeably and you can hear a slight "click," it means the latch has correctly engaged in the locking position within the slot. At this point, the external lens 7 and the projector are successfully installed and connected.

[0049] The mounting method, where the claws and slots work together, makes changing the external lens 7 extremely convenient. Users don't need complicated tools; they can switch between different external lenses 7 quickly and easily through simple manual operation. For example, in a meeting setting, if it's necessary to switch from presenting a document to playing a video, users can quickly switch to the appropriate external lens 7 for video playback, improving equipment efficiency and adapting to the rapid switching needs of different application scenarios. Users can choose different types of external lenses 7 according to their actual needs, such as telephoto lenses for long-distance projection, wide-angle lenses for expanding the projection range, and macro lenses for close-up projection detail display. This flexibility greatly expands the application range of modular projection devices, meeting diverse projection needs in different situations. The tight fit between the claws and slots ensures a secure connection of the external lens 7 to the projector. During projector operation, even with some vibration or slight impact, the external lens 7 will not easily loosen or detach, ensuring the stability of the projected image. For example, when the projector is moved to different locations, or when there are vibration sources in the surrounding environment (such as air conditioners or fans) during projector operation, the external lens 7 can still remain stably in its installed position, ensuring the continuity of the projection process and the stability of the image quality. Because the external lens 7 maintains a stable position and good concentricity after installation, its optical system with the projector's optical engine lens 4 can always maintain accurate matching. This helps ensure that the clarity, color reproduction, and other optical performance indicators of the projected image are not affected, providing users with a high-quality projected image. Whether in long-duration conference projections or continuous playback in a home theater, it maintains stable optical performance, enhancing the user experience.

[0050] The implementation principle of this embodiment is as follows: Through the rational design of components such as the housing 1, lens cover 8, decorative ring 10, and lens sleeve 16, flexible adjustment of the optical engine lens 4 and convenient installation of the external lens 7 are achieved, improving the performance of the projector and the user experience. In particular, the design of the lens sleeve 16 ensures the stable sealing of the optical engine head when the optical engine lens 4 moves up and down the axis, preventing dust from entering and improving the reliability and service life of the projector.

[0051] Example 2

[0052] The difference between this embodiment and the previous embodiment is that the lens cover 8 includes a cover body and a connecting part, and the shape and size of the cover body match the contour of the external lens 7. The cover body is made of transparent or translucent engineering plastic material, such as polycarbonate (PC) or acrylic (PMMA). These materials have good optical properties, ensuring clarity and uniformity of light transmission, while also possessing high strength and wear resistance, effectively preventing scratches and damage during daily use.

[0053] The cover is precisely designed according to the contour shape of the external lens 7. For example, if the external lens 7 is circular, the cover is designed to be circular with a diameter slightly larger than that of the external lens 7 to ensure complete coverage and protection of the lens. For external lenses 7 with special shapes, such as square or oval, the cover is also designed to match the shape accordingly, with rounded edges to avoid sharp corners, ensuring both aesthetics and preventing accidental damage. A slight curvature can be incorporated into the surface of the cover to match the curvature of the external lens 7, better fitting the lens surface and improving the protective effect.

[0054] To further enhance optical performance, the inner surface of the cover can be treated with an anti-reflective coating to reduce light reflection loss and improve the brightness and contrast of the projected image. Additionally, for some high-end applications, the cover can also function as an optical filter, such as ultraviolet (UV) filtering, to prevent UV damage to the lens and internal optical components, thus extending the device's lifespan.

[0055] The connecting part is made of a flexible material, such as rubber or silicone, to ensure it has a certain degree of flexibility and elasticity. One end of the connecting part is fixedly connected to the cover, for example by injection molding or adhesive bonding, to ensure a firm and reliable connection. The other end is designed with a connecting component that matches the mounting structure on the housing 1, such as a buckle, a slot, or a magnetic structure.

[0056] If a snap-fit ​​structure is used, the snaps on the connecting part can be designed as elastic hooks, with the shape and size of the hooks matching the slots on the housing 1. When installing the lens cover 8, the user only needs to align the lens cover 8 with the installation position on the housing 1 and press gently; the hooks will then snap into the slots for quick installation. Simultaneously, to prevent accidental detachment, the snap 13 can be designed with double or multiple snaps, and certain anti-slip textures are provided inside the snap to increase friction with the slots. If a magnetic structure is used, a small magnet is embedded in the connecting part, and correspondingly, a metal sheet or a magnet with opposite magnetism is installed at the corresponding position on the housing 1. When installing the lens cover 8, it automatically adheres to the housing 1 through magnetic attraction, making the installation process simple and convenient. The advantage of the magnetic structure is that it allows for quick disassembly and installation, and maintains good connection stability even after multiple uses. To ensure moderate magnetic strength, the selection and layout of the magnets need to be precisely calculated and tested, ensuring that the lens cover 8 will not accidentally detach under normal use while also facilitating manual disassembly by the user.

[0057] The connection between the connecting part and the cover and housing 1 should also have good sealing performance to prevent dust, moisture and other impurities from entering the projector through the connection gaps. A sealing strip can be designed around the edge of the connecting part or sealant can be used to seal it, ensuring that a tight sealing structure is formed between the connecting part and the cover and housing 1, further improving the overall protection performance of the projector.

[0058] The implementation principle of this embodiment is as follows: In actual use, when the user replaces the external lens 7, they only need to follow the corresponding operating steps (such as first unlocking the lens cover 8 connector, then removing the lens cover 8, replacing the external lens 7, and then reinstalling the lens cover 8) to easily complete the operation. Because the shape and size of the cover match the contour of the external lens 7, the user can quickly and accurately position the lens cover 8 during installation, improving operational efficiency. Simultaneously, the flexible design of the connector gives the lens cover 8 a certain degree of tolerance during installation; even if the installation position is slightly off, it can be adjusted through the elastic deformation of the connector to ensure proper installation. The design of the lens cover 8 not only effectively protects the external lens 7 from damage such as dust, fingerprints, and impacts, extending the lens's lifespan, but also, through its perfect match with the contour of the external lens 7 and the reasonable material selection and appearance design, makes the projector more aesthetically pleasing and enhances the overall product image and user experience. Whether during projector use or storage, the lens cover 8 provides excellent protection, ensuring the long-term stable operation of the projector.

[0059] Example 3

[0060] The difference between this embodiment and the previous embodiment is that: a temperature sensor is provided on the housing 1, electrically connected to the electronic system components, for real-time monitoring of the internal temperature of the housing 1. The temperature sensor can be made of a thermistor, which has high sensitivity and response speed. The temperature sensor can be installed close to the electronic system components to detect areas of heat generation in a timely manner. A cooling fan is also provided on the housing 1, electrically connected to the electronic system components, for activation when the temperature is too high to aid in heat dissipation. The cooling fan can be driven by a DC brushless motor, which has low noise and a long service life. The cooling fan can be installed on the bottom or side of the housing 1 to better guide airflow and improve heat dissipation efficiency. Multiple heat dissipation holes are provided on the housing 1, distributed on the top and sides of the housing 1 to facilitate airflow. The diameter of the heat dissipation holes can be designed to be 3mm to 5mm to ensure sufficient ventilation while preventing dust from entering. The heat dissipation holes can be designed as a mesh structure to increase the surface area and improve the heat dissipation effect.

[0061] The housing 1 also includes a humidity sensor, electrically connected to the electronic system components, for real-time monitoring of the humidity inside the housing 1. The humidity sensor can be made of a humidity-sensitive resistor, offering high sensitivity and stability. It can be installed near the through-hole 5 to promptly detect humidity changes and prevent condensation. The housing 1 also includes a dehumidification module, electrically connected to the electronic system components, which activates when humidity levels exceed the limit to remove moisture from the housing 1. This dehumidification module can be made of a semiconductor dehumidifier, offering low energy consumption and fast dehumidification speed. The dehumidification module can be installed at the bottom of the housing 1 for better moisture absorption.

[0062] The implementation principle of this embodiment is as follows: by adding a temperature sensor, a cooling fan, a humidity sensor, and a dehumidification module, comprehensive monitoring and control of the internal environment of the casing 1 is achieved, effectively solving the problem that traditional projectors are prone to failure in high temperature and high humidity environments. In particular, the intelligent temperature control and dehumidification functions improve the stability and reliability of the projector and extend its service life.

[0063] Example 4

[0064] The difference between this embodiment and the previous embodiment is that: a shock-absorbing pad is provided on the bottom of the housing 1 to reduce the impact of external vibrations on the projector. The shock-absorbing pad can be made of rubber material, which has good elasticity and damping characteristics. The shock-absorbing pad can be designed in a rectangular or circular shape to adapt to the bottom of the housing 1 of different shapes.

[0065] The housing 1 is equipped with a wireless communication module, which is electrically connected to the electronic system components for remote control and data transmission. The wireless communication module supports multiple communication protocols such as Wi-Fi and Bluetooth, and features high transmission speed and stability. The wireless communication module can be mounted on the top or side of the housing 1 for better signal reception and transmission.

[0066] A power management module is installed on housing 1. This module is electrically connected to the electronic system components and is used to manage and distribute power resources. The power management module supports multiple power supply methods, such as AC power and batteries, offering high flexibility and reliability. The power management module can be installed at the bottom of housing 1 for better power resource management.

[0067] The housing 1 is equipped with an audio output interface, which is electrically connected to the electronic system components and used to output audio signals. The audio output interface supports various audio formats, such as MP3 and WAV, offering high compatibility and sound quality. The audio output interface can be mounted on the side of the housing 1 for convenient connection of headphones or speakers.

[0068] The implementation principle of this embodiment is as follows: by adding shock-absorbing pads, a wireless communication module, a power management module, and an audio output interface, comprehensive protection and enhanced functionality for the projector are achieved. In particular, the design of the shock-absorbing pads effectively reduces the impact of external vibrations on the projector, improving its stability and reliability. With the support of the wireless communication module and the power management module, the projector can maintain efficient operation in various environments, meeting diverse user needs.

[0069] Example 5

[0070] The difference between this embodiment and the previous embodiment is that an ambient light sensor is provided on the housing 1. This sensor is electrically connected to the electronic system components and is used to monitor the ambient light intensity in real time. The ambient light sensor can be made of a photodiode, which has high sensitivity and response speed. The ambient light sensor can be installed on the top or side of the housing 1 to detect changes in light intensity promptly.

[0071] An automatic dimming module is installed on housing 1. This module is electrically connected to the electronic system components and automatically adjusts the projector's brightness based on the ambient light sensor's detection results. The automatic dimming module supports multiple dimming modes, such as manual, automatic, and timed, offering high flexibility and intelligence. The automatic dimming module can be installed at the bottom of housing 1 for better management of brightness adjustment.

[0072] An infrared remote control receiver is mounted on housing 1. This receiver is electrically connected to the electronic system components and is used to receive remote control commands issued by the user. The infrared remote control receiver supports multiple remote control protocols, such as NEC and RC5, and offers high compatibility and stability. The receiver can be installed on the front or side of housing 1 for convenient user operation.

[0073] The housing 1 is equipped with a voice recognition module, which is electrically connected to the electronic system components. This module receives user voice commands and executes corresponding operations. The voice recognition module supports multiple languages ​​and dialects, and features a high recognition rate and fast response speed. The voice recognition module can be installed on the top or side of the housing 1 for better reception of voice commands.

[0074] The implementation principle of this embodiment is as follows: by adding an ambient light sensor, an automatic dimming module, an infrared remote control receiver, and a voice recognition module, intelligent control and optimization of the projector are achieved. In particular, the coordinated operation of the ambient light sensor and the automatic dimming module ensures that the projected image always has the best viewing effect under different lighting conditions. The support of the infrared remote control receiver and the voice recognition module makes it easier for users to operate the projector, improving the user experience.

[0075] Example 6

[0076] The difference between this embodiment and the previous embodiment is that a camera is provided on the housing 1, and the camera is electrically connected to the electronic system components to capture the actual effect of the projected image. The camera can be made of a CMOS sensor, which has high resolution and low-light performance. The camera can be mounted on the front or side of the housing 1 to capture the entire projected image.

[0077] An image processing module is mounted on housing 1. This module is electrically connected to the electronic system components and is used to process and optimize the images captured by the camera. The image processing module supports various image processing algorithms, such as sharpening, noise reduction, and color correction, and boasts high processing power and optimization effects. The image processing module can be installed at the bottom of housing 1 for better management of image processing tasks.

[0078] The housing 1 is equipped with a cloud storage module, which is electrically connected to the electronic system components and used to upload processed image data to a cloud server. The cloud storage module supports various cloud storage services, such as Alibaba Cloud and Tencent Cloud, and offers high security and support capabilities. The cloud storage module can be installed on the side of the housing 1 for better management of data upload tasks.

[0079] The housing 1 houses a data analysis module, which is electrically connected to the electronic system components and is used to analyze and mine data uploaded to the cloud. The data analysis module supports various data analysis algorithms, such as machine learning and data mining, and possesses high analytical capabilities and application value. The data analysis module can be installed at the bottom of the housing 1 for better management of data analysis tasks.

[0080] The implementation principle of this embodiment is as follows: by adding a camera, image processing module, cloud storage module, and data analysis module, real-time monitoring and optimization of the projected image are achieved. In particular, the collaborative work of the camera and image processing module ensures the quality and effect of the projected image. The support of the cloud storage module and data analysis module allows users to more easily obtain and analyze projection data, improving the projector's intelligence level and application value.

[0081] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A projector with an external extension lens, characterized in that, The device includes a housing (1), which encloses a cavity (2). An electronic system assembly is housed within the cavity (2). The electronic system assembly is electrically connected to a transmission assembly (3) for adjusting the position of an optical engine lens (4). The optical engine lens (4) is mounted on the transmission assembly (3) and is electrically connected to the electronic system assembly. A through hole (5) is provided on the housing (1), corresponding to the optical engine lens (4). A lens mount ring (6) is provided on the optical engine lens (4), and an external lens (7) is detachably mounted on the lens mount ring (6). A lens cap (8) is detachably mounted on the housing (1) for sealing. The through hole (5) is blocked; the housing (1) is provided with a mounting groove (9) around the through hole (5), the mounting groove (9) is provided with a decorative ring (10), the decorative ring (10) is provided with an opening (11), the decorative ring (10) and the mounting groove (9) together form a snap-fit ​​groove (12), the lens cover (8) is provided with a buckle (13), the opening (11) avoids the buckle (13), and the buckle (13) is fitted into the snap-fit ​​groove (12) by rotating the lens cover (8) relative to the housing (1); the lens cover (8) includes a cover body and a connecting part, the shape and size of the cover body match the outline of the external lens (7).

2. The projector with an external extension lens according to claim 1, characterized in that, The decorative ring (10) is provided with a plurality of positioning glass beads (14), and the mirror cover (8) is provided with positioning holes (15).

3. A projector with an external extension lens according to claim 2, characterized in that, It also includes a lens sleeve (16), one end of which is provided with a first extension (17), the first extension (17) forming a first fitting groove (18), the lens mount ring (6) fitting into the first fitting groove (18), the first extension (17) being provided with a magnetic attracting element, the lens mount ring (6) being made of metal, and the lens mount ring (6) and the first extension (17) engaging with each other.

4. A projector with an external extension lens according to claim 3, characterized in that, The lens sleeve (16) has a second extension (19) at one end away from the first extension (17), and the second extension (19) is clamped by the bottom of the mounting groove (9) and the end face of the lens cover (8).

5. A projector with an external extension lens according to claim 4, characterized in that, The second extension (19) is provided with a third extension (20), the third extension (20) is parallel to the mirror cover (8) along the axial direction, and the third extension (20) and the side of the mirror cover (8) are in close contact.

6. A projector with an external extension lens according to claim 5, characterized in that, The lens sleeve (16) has a wall thickness of 0.5mm to 1.5mm, and a number of annular reinforcing ribs (21) are evenly spaced on the lens sleeve (16).

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