Projector optical lens adjusting device

Abstract

The utility model relates to the technical field of projection equipment, in particular to a projector optical lens adjusting device which comprises a base, a supporting frame, an adjusting mechanism and a lens driving module. The adjusting mechanism comprises a guide rail, a stepping motor and a sliding block, and the sliding block is connected with the stepping motor through a synchronous belt and used for driving the lens to move. The lens driving module is provided with a miniature linear motor and an adjusting ring, a high-precision sensor is arranged in the adjusting ring, an angle adjusting assembly and a limiting mechanism are arranged on the outer side of the adjusting ring, and accurate position and angle adjusting and locking fixing can be achieved. The base is provided with a heat dissipation cavity and a temperature sensor, and operation stability is ensured. The position and angle of the optical lens can be quickly and accurately adjusted, the projection effect and the intelligent level are improved, and the user experience is optimized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to optical equipment adjusting technical field, concretely is a kind of projector optical lens adjusting device. BACKGROUND

[0002] With the rapid development of projector technology, optical lens adjusting device plays a crucial role in improving projection effect and user experience. However, the existing projector optical lens adjustment scheme still has many deficiencies in practical application. The projectors on the market usually rely on mechanical or semi-automatic adjustment methods, which are difficult to achieve precise and fast lens adjustment when facing complex scenes, resulting in problems such as decreased projection picture quality and poor user experience.

[0003] For example, a kind of intelligent projector inclination angle self-adapting system with publication number CN116774503B drives projector or optical system through electric support rod, changes the position of projection picture in imaging object plane, to realize intelligent automatic adjustment. However, this scheme mainly relies on external support structure (such as support rod module) to adjust projection angle and position, and its adjustment precision is limited by the stability of mechanical parts, and it cannot directly fine-tune the internal parameters of optical lens, so it may not meet the requirements under high-precision projection demand. In addition, a kind of projector and its control method with publication number CN104853126B adjusts focus according to operation through lens driving part, and evaluates the contrast of shooting image by using evaluation value calculation part, and shows focus alignment state to user. Although this method can feedback focus adjustment result in an intuitive way, its core is to collect data and calculate evaluation value through external photography part, rather than directly optimizing the adjustment mechanism of optical lens itself, which may lead to long adjustment time and difficulty in fast response in dynamic scene.

[0004] The above problems show that the current projector optical lens adjustment scheme on the market still has a lot of room for improvement in high precision, fast response and intelligent adjustment. Therefore, a new type of projector optical lens adjusting device is urgently needed to overcome the shortcomings in the prior art, to achieve higher precision, faster response speed of optical lens adjustment function through more advanced adjustment mechanism, so as to significantly improve the projection effect and user experience. UTILITY MODEL CONTENT

[0005] The utility model discloses a projection optical lens adjusting device, to solve the problem of above -mentioned background art. The utility model provides the following technical scheme: a projection optical lens adjusting device, including base, the upper fixed mounting of base has support frame, and the inboard of support frame is provided with adjusting mechanism, and the bottom fixed mounting of adjusting mechanism has lens drive module, the adjusting mechanism includes guide rail, stepper motor and sliding block, the guide rail fixed mounting is at the inboard central position place of support frame, and the surface sliding installation of guide rail has sliding block, and one side of sliding block is passed through synchronous belt and is connected with the transmission of stepper motor.

[0006] Preferably, the lens drive module includes a miniature linear motor and an adjusting ring, the miniature linear motor is fixedly installed below the sliding block, the output end of the miniature linear motor is fixedly installed with the adjusting ring, and the adjusting ring is used for directly driving the optical lens to displace and adjust.

[0007] Preferably, the inboard of the adjusting ring is provided with a plurality of positioning grooves, and a high-precision sensor is installed in the positioning groove, for real-time monitoring the displacement of the optical lens and feeding back to the control system.

[0008] Preferably, the outer side of the adjusting ring is symmetrically provided with an angle adjusting assembly, the angle adjusting assembly includes a servo motor and a gear, the output end of the servo motor is connected with the outer gear of the adjusting ring through the gear, for realizing the angle fine adjustment of the optical lens.

[0009] Preferably, the angle adjusting assembly further includes a limiting mechanism, the limiting mechanism includes an electromagnetic lock and a limiting block, the electromagnetic lock is fixedly installed on the outer side of the adjusting ring, and the limiting block is fixedly installed on the support frame, for locking and fixing the adjusting ring after adjusting.

[0010] Preferably, the surface of the base is symmetrically provided with a heat dissipation cavity, a heat dissipation fan is installed in the inner cavity of the heat dissipation cavity, and a ventilation hole is arranged at the top of the heat dissipation cavity, for providing efficient heat dissipation function for the optical lens and the adjusting mechanism.

[0011] Preferably, a temperature sensor is further arranged in the inner cavity of the heat dissipation cavity, the temperature sensor is electrically connected with the heat dissipation fan, for automatically starting and stopping the heat dissipation fan according to the real-time temperature, to ensure the stability of the device operation.

[0012] Compared with the prior art, the beneficial effects of the utility model are: the utility model discloses an adjusting mechanism arranged on the inner side of the support frame, which can quickly and accurately adjust the position and angle of the optical lens, and through the real-time monitoring and feedback of the high-precision sensor, the accuracy and stability of the adjusting process are ensured.In addition, through the engagement design of the servo motor and the gear in the angle adjusting assembly, the optical lens can be dynamically adjusted at a small angle, meeting the high-precision requirement in complex scenes.The cooperation of the heat dissipation cavity and the temperature sensor further improves the stability and service life of the device.In summary, the utility model can significantly improve the adjusting accuracy, response speed and intelligent level of the optical lens of the projector, thereby optimizing the projection effect and user experience. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the whole structure schematic diagram of the utility model.

[0014] Figure 2 It is the structure schematic diagram of the adjusting mechanism in the utility model, and the installation position and connection relationship of the guide rail, stepping motor and sliding block are shown.

[0015] Figure 3 It is the structure schematic diagram of the lens driving module of the utility model, and the assembly mode of the miniature linear motor and the adjusting ring and the high-precision sensor in the positioning groove are highlighted.

[0016] Figure 4 It is the structure schematic diagram of the angle adjusting assembly of the utility model, and the structure layout of the servo motor, gear and limiting mechanism is shown in detail.

[0017] Figure 5 It is the cross-sectional structure schematic diagram of the base heat dissipation cavity of the utility model, and the distribution of the heat dissipation fan, temperature sensor and ventilation hole is clearly presented.

[0018] The signs are as follows:

[0019] 1, base;2, support frame;3, adjusting mechanism;4, lens driving module;5, guide rail;6, stepping motor;7, sliding block;8, synchronous belt;9, miniature linear motor;10, adjusting ring;11, positioning groove;12, high-precision sensor;13, angle adjusting assembly;14, servo motor;15, gear;16, limiting mechanism;17, electromagnetic lock;18, limiting block;19, heat dissipation cavity;20, heat dissipation fan;21, ventilation hole;22, temperature sensor. DETAILED DESCRIPTION

[0020] The utility model relates to a kind of projector optical lens adjusting device, the following is combined with the drawings Figure 1 to the drawings Figure 5The specific embodiments of the utility model are described in detail in the accompanying drawings. The technical solutions described in the embodiments can be applied to various high-precision projection devices, and are particularly suitable for complex scenes that require frequent adjustment of the position and angle of the optical lens. Through the detailed description of the embodiments, the specific structure, operation principle and actual application effect of the device can be clearly understood.

[0021] As shown in Figure 1 The overall structure of the utility model includes a base 1, a support frame 2, an adjusting mechanism 3, a lens driving module 4 and other auxiliary components. The base 1 is the basic support component of the entire device, and its surface is flat and has sufficient strength and stability to support the functional modules above. The support frame 2 is fixedly installed above the base 1, and the adjusting mechanism 3 is arranged at the central position of the inner side of the support frame 2, which is used to realize the displacement adjustment of the optical lens. The bottom of the adjusting mechanism 3 is connected with the lens driving module 4, and the lens driving module 4 directly acts on the optical lens to complete the high-precision displacement operation of the lens. In addition, the surface of the base 1 is symmetrically provided with two heat dissipation cavities 19, and each heat dissipation cavity 19 is internally provided with a heat dissipation fan 20, and the top is provided with a ventilation hole 21. Components with large heat dissipation capacity such as the stepping motor 6 and the micro linear motor 9 can be efficiently cooled through the heat dissipation cavity 19, thereby ensuring the stability and reliability of the entire device during long-time operation.

[0022] The specific structure of the adjusting mechanism 3 is shown in Figure 2 The core components include a guide rail 5, a stepping motor 6, a sliding block 7 and a synchronous belt 8. The guide rail 5 is fixedly installed at the central position of the inner side of the support frame 2 and extends in the horizontal direction to provide a stable sliding path for the sliding block 7. The sliding block 7 is matched with the guide rail 5 through the sliding groove at the bottom thereof and can freely slide on the guide rail 5. The stepping motor 6 is fixedly installed at one end of the support frame 2, and the output shaft thereof is drivingly connected with one side of the sliding block 7 through the synchronous belt 8. When the stepping motor 6 is started, the synchronous belt 8 drives the sliding block 7 to move horizontally along the guide rail 5, thereby realizing the position adjustment of the sliding block 7. This design not only has a simple structure, but also can ensure that the movement of the sliding block 7 is stable and accurate, meeting the strict requirements for displacement accuracy in the optical lens adjustment process.

[0023] The structure of the lens driving module 4 is shown in Figure 3As shown, it mainly includes a micro linear motor 9 and an adjusting ring 10. The micro linear motor 9 is fixedly installed below the sliding block 7, and its output end is fixedly connected with the adjusting ring 10. The inner side of the adjusting ring 10 is provided with a plurality of positioning grooves 11, and a high-precision sensor 12 is installed in each positioning groove 11. The high-precision sensor 12 is used for monitoring the displacement of the optical lens in real time and feeding back data to the control system. The introduction of the high-precision sensor 12 makes the whole adjusting process more intelligent and controllable. In actual application, when the control system receives the target displacement value input by the user, it will send a corresponding control signal to the micro linear motor 9. The micro linear motor 9 drives the adjusting ring 10 to move accurately according to the signal, and the high-precision sensor 12 collects the displacement data of the adjusting ring 10 in real time and feeds back to the control system, forming a closed-loop control circuit, so as to ensure that the displacement adjustment of the optical lens reaches the expected target.

[0024] In order to further improve the angle adjustment capability of the optical lens, the utility model also sets up angle adjustment assembly 13, its structure as Figure 4 shown. Angle adjustment assembly 13 includes servo motor 14, gear 15 and limit mechanism 16. Servo motor 14 is fixedly installed on the outer side of adjusting ring 10, and its output end is connected with the outer gear of adjusting ring 10 through gear 15. When servo motor 14 starts, gear 15 drives adjusting ring 10 to rotate, so as to realize the angle fine adjustment of optical lens. Limit mechanism 16 includes electromagnetic lock 17 and limit block 18, wherein electromagnetic lock 17 is fixedly installed on the outer side of adjusting ring 10, and limit block 18 is fixedly installed on support frame 2. After angle adjustment is completed, electromagnetic lock 17 generates magnetic force by electrification, and locking adjusting ring 10 at the current position, to prevent angle deviation caused by external interference. This design not only improves the precision of angle adjustment, but also enhances the anti-interference ability of the device, especially suitable for use in complex environment.

[0025] The design of heat dissipation cavity 19 is another important feature of the utility model, and its specific structure is as Figure 5 shown. Each heat dissipation cavity 19 is internally provided with a heat dissipation fan 20, and a ventilation hole 21 is arranged at the top for discharging hot air outside the device. In addition, a temperature sensor 22 is arranged in the heat dissipation cavity 19, and the temperature sensor 22 is electrically connected with the heat dissipation fan 20, which can automatically start and stop the heat dissipation fan 20 according to the real-time temperature. For example, when the temperature sensor 22 detects that the temperature inside the heat dissipation cavity 19 exceeds the preset threshold, it will send a start signal to the heat dissipation fan 20, and the heat dissipation fan 20 starts to work to reduce the temperature; when the temperature drops to the safe range, the heat dissipation fan 20 automatically stops running. This intelligent temperature control design not only effectively prolongs the service life of the device, but also significantly improves its running stability.

[0026] In actual application scenarios, the working process of the utility model is as follows: first, the user inputs the target displacement value and angle value of the optical lens through the control system. The control system sends instructions to the stepping motor 6 according to the input value, and the stepping motor 6 drives the sliding block 7 to move to the target position along the guide rail 5 through the synchronous belt 8. Subsequently, the control system sends signals to the micro linear motor 9, and the micro linear motor 9 pushes the adjusting ring 10 to adjust the displacement, while the high-precision sensor 12 monitors the displacement of the optical lens in real time and feeds back to the control system. When the displacement adjustment is completed, the control system sends instructions to the servo motor 14, and the servo motor 14 drives the adjusting ring 10 to rotate through the gear 15, completing the angle fine adjustment of the optical lens. Finally, the electromagnetic lock 17 is energized to lock the adjusting ring 10, ensuring the stability of the adjustment result. In the whole adjustment process, the cooling fan 20 and temperature sensor 22 in the heat dissipation cavity 19 work cooperatively to provide efficient heat dissipation support for the device, avoiding performance degradation due to overheating.

[0027] In summary, the utility model discloses a supporting frame 2 inside setting adjustment mechanism 3, realize the fast, accurate displacement adjustment of optical lens;Through the high-precision sensor 12 and micro linear motor 9 in lens drive module 4, ensure the accuracy and stability of the adjustment process;Through the servo motor 14 and gear 15 design in angle adjustment assembly 13, realize the small angle dynamic adjustment of optical lens;Through the cooperation of heat dissipation cavity 19 and temperature sensor 22, further improve the stability and service life of the device. The utility model can significantly improve the adjustment precision, response speed and intelligent level of the projector optical lens, thereby optimizing the projection effect and user experience, and has wide application prospect.

[0028] The above only for the preferred embodiment of the utility model has been described, and does not limit the utility model, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A device for adjusting the optical lens of a projector, comprising a base (1); characterized in that: The upper side of the base (1) is fixedly installed with a support frame (2), the inner side of the support frame (2) is provided with an adjusting mechanism (3), and the bottom of the adjusting mechanism (3) is fixedly installed with a lens driving module (4); the adjusting mechanism (3) comprises a guide rail (5), a stepping motor (6) and a sliding block (7), the guide rail (5) is fixedly installed at the central position of the inner side of the support frame (2), the surface of the guide rail (5) is slidably installed with the sliding block (7), and one side of the sliding block (7) is in transmission connection with the stepping motor (6) through a synchronous belt (8).

2. The optical lens adjusting device for a projector according to claim 1, wherein: The lens driving module (4) comprises a micro linear motor (9) and an adjusting ring (10), the micro linear motor (9) is fixedly installed below the sliding block (7), and the output end of the micro linear motor (9) is fixedly installed with the adjusting ring (10).

3. The optical lens adjusting device for a projector according to claim 2, wherein: The inner side of the adjusting ring (10) is provided with a plurality of positioning grooves (11), and a high-precision sensor (12) is installed in the positioning groove (11).

4. The optical lens adjusting device for a projector according to claim 2, wherein: The outer side of the adjusting ring (10) is symmetrically provided with an angle adjusting assembly (13), the angle adjusting assembly (13) comprises a servo motor (14) and a gear (15), the output end of the servo motor (14) is in meshing connection with the outer gear of the adjusting ring (10) through the gear (15).

5. The optical lens adjusting device for a projector according to claim 4, wherein: The angle adjusting assembly (13) further comprises a limiting mechanism (16), the limiting mechanism (16) comprises an electromagnetic lock (17) and a limiting block (18), the electromagnetic lock (17) is fixedly installed on the outer side of the adjusting ring (10), and the limiting block (18) is fixedly installed on the support frame (2).

6. The optical lens adjusting device for a projector according to claim 1, wherein: The surface of the base (1) is symmetrically provided with a heat dissipation cavity (19), a heat dissipation fan (20) is installed in the inner cavity of the heat dissipation cavity (19), and a ventilation hole (21) is arranged at the top of the heat dissipation cavity (19).

7. The optical lens adjusting device for a projector according to claim 6, wherein: A temperature sensor (22) is further arranged in the inner cavity of the heat dissipation cavity (19), and the temperature sensor (22) is electrically connected with the heat dissipation fan (20).

8. The optical lens adjusting device for a projector according to claim 1, wherein: The stepping motor (6) is fixedly installed at one end of the support frame (2), and the output shaft of the stepping motor (6) is in transmission connection with the sliding block (7) through the synchronous belt (8).

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