Light adjusting structure and projection module applying the same

Abstract

The application discloses a light adjusting structure and a projection module applying the light adjusting structure, and relates to the technical field of display devices. The light adjusting structure comprises a plurality of adjusting blocks, at least one common electrode and a plurality of control electrodes. The plurality of adjusting blocks are connected with components to be adjusted and are arranged around the periphery of the components to be adjusted. The plurality of adjusting blocks are connected in series on the common electrode. Each control electrode is connected with an adjusting block and is electrically connected with the component to be adjusted. Each adjusting block drives the preset position of the component to be adjusted to deflect under the control of the corresponding control electrode. The technical scheme provided by the application adjusts the light emitting angle of the projection module, so that light beams of different colors converge at the same position, and the projection effect of the projection module is improved.

Description

Technical Field

[0001] This invention relates to the field of display device technology, and in particular to a light adjustment structure and a projection module using the light adjustment structure. Background Technology

[0002] With the emergence of the metaverse concept, AR, VR, and MR, as important interface devices for the metaverse, have experienced rapid development in recent years. Among them, for devices using a projection optical engine + waveguide imaging solution, the performance of the projection optical engine is one of the most important factors affecting the overall performance of the device. Miniaturization of the projection optical engine and improvement of light source brightness have always been the main standards for evaluating the performance of the optical engine. In order to maximize the brightness of the projection optical engine while reducing its weight and size, full-color LC oS + LED AR projection optical engines often use multi-in-one LEDs as the light source. The advantage of using multi-in-one light sources is that it can reduce the number of filters used, thereby reducing the weight and size of the optical engine and reducing optical power loss.

[0003] However, since the light emission positions of different colors of LEDs in an all-in-one device are distributed differently, the use of an all-in-one light source will also bring about the problem of uneven optical engine color and brightness, which will result in a poor viewing experience for end users when wearing it. Summary of the Invention

[0004] The main objective of this invention is to propose a light adjustment structure and a projection module that uses the light adjustment structure, which aims to adjust the light emission angle of the projection module so that light of different colors converges at the same position, thereby improving the projection effect of the projection module.

[0005] To achieve the above objectives, the present invention proposes a light adjustment structure, the light adjustment structure comprising:

[0006] Multiple adjustment blocks are connected to the component to be adjusted and are arranged around the periphery of the component to be adjusted.

[0007] At least one common electrode, and a plurality of said adjusting blocks connected in series on said common electrode; and

[0008] Multiple control electrodes, each of which is connected to an adjustment block and electrically connected to the component to be adjusted;

[0009] Each of the adjustment blocks drives the component to be adjusted to deflect to a preset position under the control of the corresponding control electrode.

[0010] In one embodiment, the adjusting block is a piezoelectric element. When the control electrode and the common electrode are connected, the deformation of the piezoelectric element drives the preset position of the component to be adjusted to deflect.

[0011] In one embodiment, the light adjustment structure includes at least four adjustment blocks, which are respectively located at the four corners of the component to be adjusted.

[0012] In one embodiment, each of the adjustment blocks includes two adjustment parts, both of which are located at the same corner of the component to be adjusted and are arranged at an angle.

[0013] In one embodiment, each of the adjustment units includes a plurality of piezoelectric sheets stacked together, and each piezoelectric sheet is connected to the common electrode and a control electrode.

[0014] In one embodiment, each of the adjustment blocks includes an electromagnetic coil, a magnet, and a first elastic element. The electromagnetic coil is fixed to the main body of the device and electrically connected to a control electrode. The two ends of the first elastic element are respectively connected to the electromagnetic coil and the magnet, and the side of the magnet facing away from the first elastic element is connected to the component to be adjusted.

[0015] In one embodiment, the light adjustment structure further includes a plurality of second elastic elements, each of which has its two ends connected to the component to be adjusted and an adjustment block, respectively.

[0016] The present invention also proposes a projection module, which includes a projection optical engine, an LED assembly, and a light adjustment structure as described above. The light adjustment structure is disposed between the projection optical engine and the LED assembly, and the adjustment block of the light adjustment mechanism is used to adjust the deflection angle of the LED assembly.

[0017] In one embodiment, the LED assembly includes a multi-in-one light-emitting chip having four light-emitting surfaces located at the four corners of the chip; each adjustment block is connected to one of the light-emitting surfaces.

[0018] The present invention also proposes a projection module, which includes a projection optical engine, a plane lens, and a light adjustment structure as described above. One end of each of the multiple adjustment blocks of the light adjustment structure is connected to the plane lens. The projection optical engine has an inner cavity and a projection port. The light adjustment structure and the plane lens are installed in the inner cavity, and the plane lens is opposite to the projection port.

[0019] The light adjustment structure of this invention includes multiple adjustment blocks, at least one common electrode, and multiple control electrodes. The adjustment blocks are connected to the component to be adjusted and arranged around its periphery. The adjustment blocks are connected in series to the common electrode. Each control electrode is connected to one adjustment block and electrically connected to the component to be adjusted. Each adjustment block, under the control of its corresponding control electrode, drives the component to be adjusted to a preset position deflection. Thus, by employing multiple adjustment blocks, at least one common electrode, and multiple control electrodes, efficient and precise control of the component to be adjusted is achieved. Each adjustment block, under the control of its corresponding control electrode, can precisely drive the component to be adjusted to a preset position deflection, adjusting the light emission angle of the projection module and converging different colors of light at the same position, thereby improving the projection effect of the projection module. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 A schematic diagram of an embodiment of the light adjustment structure provided by the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of an embodiment of the projection module provided by the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the LED component of the projection module provided by the present invention;

[0024] Figure 4 A schematic diagram of the light adjustment structure and LED components provided by the present invention after assembly;

[0025] Figure 5 A schematic diagram of the structure of the adjustment unit for light deflection according to an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the adjustment unit for light deflection in another embodiment of the present invention;

[0027] Figure 7 A schematic diagram of the structure of the adjustment unit for light deflection in another embodiment of the present invention;

[0028] Figure 8 A schematic diagram of another embodiment of the light adjustment structure provided by the present invention;

[0029] Figure 9 The projection module provided by the present invention adopts a light adjustment structure of another embodiment, and the planar lens is shown before and after deflection.

[0030] Explanation of icon numbers:

[0031] 1. Light adjustment structure; 11. Adjustment block; 111. Adjustment section; 12. Common electrode; 13. Control electrode;

[0032] 2. Projection module; 21. Projection optical engine; 22. LED assembly; 221. Light-emitting chip; 221a. Light-emitting surface; 23. Plane lens.

[0033] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0036] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0037] This invention proposes a light adjustment structure 1.

[0038] Please see Figure 1In one embodiment of the present invention, the light adjustment structure 1 includes a plurality of adjustment blocks 11, at least one common electrode 12, and a plurality of control electrodes 13. The plurality of adjustment blocks 11 are connected to the component to be adjusted and are arranged around the periphery of the component to be adjusted. The plurality of adjustment blocks 11 are connected in series on the common electrode 12. Each control electrode 13 is connected to an adjustment block 11 and is electrically connected to the component to be adjusted. Each adjustment block 11 drives the component to be adjusted to deflect to a preset position under the control of the corresponding control electrode 13.

[0039] When control electrode 13 receives a control signal, the corresponding adjustment block 11, under the control of control electrode 13, drives the component to be adjusted to deflect to a preset position. For example, when control electrode 13 receives a control signal, adjustment block 111 drives the component to be adjusted to deflect to a preset position until the desired angle is reached. By adjusting the signals of different control electrodes 13, precise control of the component to be adjusted can be achieved, thereby adjusting the direction of light and the uniformity of color brightness.

[0040] Each adjustment block 11 has the same structure and function. A common electrode 12 connects all adjustment blocks 11, forming a common part of the circuit. The component to be adjusted needs to be adjusted via the light adjustment structure 1. Multiple adjustment blocks 11 are connected to the component to be adjusted and arranged around its periphery. Specifically, multiple adjustment blocks 11 are evenly distributed around the component to be adjusted, forming a ring. Multiple adjustment blocks 11 are connected in series on the common electrode 12, forming a common part of the circuit.

[0041] This invention achieves efficient and precise control of the component to be adjusted by employing multiple adjustment blocks 11, at least one common electrode 12, and multiple control electrodes 13. Under the control of the corresponding control electrode 13, each adjustment block 11 can precisely drive the preset position deflection of the component to be adjusted, adjust the light emission angle of the projection module 2, and make the light of different colors converge at the same position, thereby improving the projection effect of the projection module 2.

[0042] In the first embodiment, please refer to Figure 1 The adjusting block 11 is a piezoelectric body. When the control electrode 13 and the common electrode 12 are connected, the piezoelectric body deforms and drives the preset position of the component to be adjusted to deflect.

[0043] When the control electrode 13 and the common electrode 12 are connected, the piezoelectric material deforms under the influence of the electric field. The piezoelectric material, subjected to the electric field, experiences uneven internal charge distribution, leading to changes in internal stress and consequently deformation. This deformation causes the piezoelectric material to synchronously move the component to be adjusted, thereby driving the component to deflect at its preset position. When the position of the component to be adjusted needs to be adjusted, the deformation of the piezoelectric material can be changed by controlling the connection state of the control electrode 13 and the common electrode 12, thus achieving precise control over the position of the component to be adjusted.

[0044] Piezoelectric elements are characterized by fast response speed and high precision. When the control electrode 13 and the common electrode 12 are connected, the piezoelectric element deforms, thereby driving the preset position deflection of the component to be adjusted. Compared with traditional mechanical drive methods, this driving method has higher positioning accuracy and faster response speed. Secondly, the piezoelectric effect allows electrical energy to be directly converted into mechanical energy, avoiding energy loss during the conversion process and improving energy utilization efficiency. In this embodiment, the connection between the piezoelectric element and the control electrode 13 and the common electrode 12 is simple, facilitating installation and disassembly. At the same time, the piezoelectric element has high reliability, reducing the failure rate and maintenance costs.

[0045] In the first embodiment, please refer to Figure 1 The light adjustment structure 1 includes at least four adjustment blocks 11, which are located at the four corners of the component to be adjusted.

[0046] Specifically, the four adjustment blocks 11 are located at the upper left, upper right, lower left, and lower right corners of the component to be adjusted, respectively. Each adjustment block 11 has an independent adjustment function and can be fine-tuned according to actual needs.

[0047] The light adjustment structure 1 includes at least four adjustment blocks 11, and the four adjustment blocks 11 are respectively located at the four corners of the component to be adjusted. This design can more accurately control the light distribution, avoid the problem of poor projection effect caused by uneven light adjustment, and significantly improve the uniformity and accuracy of light adjustment.

[0048] In practical applications, one or more adjustment blocks 11 can be adjusted as needed to achieve flexible control over the direction, intensity, and distribution of light. This design not only improves the adaptability and flexibility of the light adjustment structure 1, but also greatly enhances its reliability and durability.

[0049] In the first embodiment, please refer to Figure 1 Each adjustment block 11 includes two adjustment parts 111, both of which are located at the same corner of the component to be adjusted and are arranged at an angle.

[0050] Specifically, two adjustment parts 111 are respectively located at one corner of the component to be adjusted, and the two adjustment parts 111 form a certain included angle θ. The included angle θ is preferably between 45° and 90°, but the specific angle can be adjusted according to actual needs.

[0051] When the position of the component to be adjusted needs to be adjusted, the two adjustment parts 111 are energized respectively, causing the adjustment parts 111 to move along the corner of the component to be adjusted. Since the two adjustment parts 111 are arranged at an angle, during the movement, the adjustment parts 111 can generate a rotational torque about the corner, thereby achieving precise adjustment of the position of the component to be adjusted.

[0052] By arranging the two adjusting parts 111 of each adjusting block 11 at the same corner of the component to be adjusted, and at an angle, the accuracy and flexibility of the adjustment are greatly improved. This structural design allows the adjusting parts 111 to more accurately control the position and angle of the component to be adjusted, effectively solving the problems of inaccurate positioning and poor adjustment effect of the adjusting parts 111 in the prior art. Since the two adjusting parts 111 are located at the same corner, when adjusting the position of the component, it is not necessary to adjust multiple positions of the component; only the two adjusting parts 111 at the same corner need to be adjusted, greatly saving adjustment time.

[0053] In the first embodiment, please refer to Figure 1 Each adjustment unit 111 includes a plurality of piezoelectric sheets stacked together, and each piezoelectric sheet is connected to a common electrode and a control electrode 13.

[0054] The piezoelectric sheets within the adjustment unit 111 are stacked in a specific order, with each sheet separated by an insulating layer to ensure independent transmission of electrical signals. The number of stacked piezoelectric sheets can be adjusted according to specific application requirements, typically ranging from 3 to 10 sheets. The stacked piezoelectric sheets are connected by a common electrode that runs through all the sheets and is located at the bottom of the stacked structure. The common electrode collects the electrical signals from all the piezoelectric sheets and transmits them to an external circuit. Each piezoelectric sheet has an independent control electrode 13 located at the top of the piezoelectric sheet, opposite the common electrode. Each control electrode 13 is connected to an external control circuit via a wire to independently control the electrical signal output of each piezoelectric sheet. This connection method between each piezoelectric sheet and the common electrode and control electrode 13 ensures more stable signal transmission and effectively avoids signal loss due to poor contact.

[0055] This embodiment uses multiple piezoelectric elements stacked together. Compared with the traditional single piezoelectric element structure, it can provide a larger output force in the same volume, which greatly improves the adjustment efficiency. On the other hand, by controlling the current of one or several piezoelectric elements individually, the piezoelectric element can form a more precise and wider range of expansion and contraction, thereby further improving the adjustment accuracy of the adjustment block 11.

[0056] In the second embodiment, each adjustment block 11 includes an electromagnetic coil, a magnet, and a first elastic element. The electromagnetic coil is used to fix itself to the main body of the device and is electrically connected to a control electrode 13. The two ends of the first elastic element are respectively connected to the electromagnetic coil and the magnet, and the side of the magnet facing away from the first elastic element is connected to the component to be adjusted.

[0057] The electromagnetic coil is fixed to the main body of the equipment and electrically connected to the control electrode 13. Its position and shape can be adjusted according to the design requirements of the main body of the equipment. The magnet is connected to the electromagnetic coil and is attracted when the electromagnetic coil is energized. The two ends of the first elastic member are connected to the electromagnetic coil and the magnet respectively, serving as a connection and support.

[0058] When the control electrode 13 energizes the electromagnetic coil, the magnetic field generated by the coil attracts the magnet, causing the component to be adjusted to descend, thus fixing the magnet and the component to be adjusted. When the control electrode 13 de-energizes the electromagnetic coil, the magnetic field disappears, the magnet is no longer attracted, and the first elastic element, under its elastic action, drives the magnet and the component to be adjusted to rise, thus deflecting the angle of the component to be adjusted. The extension or retraction of the first elastic element is equal to the adjustment amount of the component to be adjusted.

[0059] The electromagnetic coil is fixed to the main body of the equipment, and the electromagnetic force it generates drives the magnet to move, while the first elastic element serves to connect and transmit the force. This structural design allows the adjusting block 11 to precisely adjust the components to be adjusted in the equipment, greatly improving adjustment efficiency and accuracy.

[0060] In one embodiment, the light adjustment structure 1 further includes a plurality of second elastic elements, each of which is connected at both ends to the component to be adjusted and an adjustment block 11.

[0061] Both ends of each second elastic element are connected to the component to be adjusted and the adjusting block 11 via fixing devices (such as screws, buckles, etc.). By connecting the adjusting block 11 and the component to be adjusted through the second elastic elements, when the adjusting block 11 moves the component, the second elastic elements can allow the component to move in both the vertical and horizontal directions, realizing a wider range of fine-tuning of the component to be adjusted and further improving the adjustment accuracy of the light adjustment structure 1.

[0062] The introduction of the second elastic element makes the connection between the component to be adjusted and the adjusting block 11 more reliable, effectively avoiding adjustment failure caused by unstable connection. Due to the elasticity of the second elastic element, the light adjustment structure 1 can better adapt to the usage requirements in different environments. When subjected to external force, the elastic element can act as a buffer to prevent damage to the component due to excessive external force, thereby improving the durability and reliability of the entire light adjustment structure 1.

[0063] Please see Figures 1 to 4 The present invention also proposes a projection module 2, which includes a projection optical engine 21, an LED component 22 and a light adjustment structure 1 as described above. The light adjustment structure 1 is disposed between the projection optical engine 21 and the LED component 22, and the adjustment block 11 of the light adjustment mechanism is used to adjust the deflection angle of the LED component 22.

[0064] The light adjustment structure 1 in this embodiment mainly consists of eight piezoelectric bodies of the same size, eight control electrodes 13, and a common electrode. The piezoelectric body is a piezoelectric material that will expand and contract when an electric field is applied in its polarization direction. The eight control electrodes 13 are respectively welded to the eight piezoelectric bodies, and the common electrode is welded to the other side of the eight piezoelectric bodies. The LED component 22 mainly consists of an FPC and a light-emitting chip 221. The FPC is a control circuit used to power the light-emitting chip 221. The multi-functional light-emitting chip 221 contains light-emitting surfaces 221a of R / G / B colors, which are distributed at different positions on the light-emitting chip 221 to provide light of different colors.

[0065] When using the all-in-one light-emitting chip 221 as the light source of the optical engine module, since the light-emitting surfaces 221a of different colors are distributed at different positions of the light-emitting chip 221, even after the processing of the light-diffusing lens inside the optical engine, the projected image will still be affected by the distribution position of the light-emitting chip 221, resulting in uneven color and brightness, which will cause a poor viewing experience for the end user.

[0066] Therefore, in this embodiment, the light adjustment structure 1 is installed between the LED component 22 and the projection optical engine 21 during the assembly of the projection module 2. It is fixed to the LED component 22 by the second elastic element. When it is necessary to adjust different light deflection angles, voltage is applied between the common electrode and the control electrode 13 respectively. The piezoelectric body between the electrodes will expand or contract under the action of the electric field, causing the light-emitting chip 221 of the LED component 22 to deflect at a certain angle, so that different colors of light are projected at the same position, thereby achieving the purpose of adjusting the uniformity of the optical engine color and brightness.

[0067] The projection module 2 also includes a display panel assembly, which is a key component for imaging in the projection module 2. It is a reflective imaging component such as LCoS. The display panel assembly itself does not emit light, and the projection optical engine 21 provides a light source and a suitable optical path for imaging.

[0068] The following explanation uses the RGBG lighting sequence as an example to illustrate the operation of projection module 2.

[0069] Please see Figure 4 and Figure 5 When the R-emitting surface 221a emits light:

[0070] When the red light-emitting surface 221a emits light, the adjusting blocks 11 of the piezoelectric elements at positions ①②③⑧ are energized and expanded by the control electrode 13, while the adjusting blocks 11 of the piezoelectric elements at other positions are de-energized and contract. This causes the LED module to deflect along the diagonal directions ③④⑦⑧, thereby producing light like... Figure 5 The light rays are deflected (from the solid line position to the dashed line position) to achieve the purpose of converging the red light towards the center position.

[0071] Please see Figure 4 and Figure 6 When the luminous surface 221a of G emits light:

[0072] When the green light-emitting surface 221a emits light, the adjusting blocks 11 of the piezoelectric elements at positions ②③④⑤ / ⑥⑦⑧① are energized and expand by the control electrode 13, while the adjusting blocks 11 of the piezoelectric elements at other positions are de-energized and contract. This causes the LED module to deflect along the diagonal directions ①②⑤⑥, thereby producing light like... Figure 6 The light rays are deflected (from the solid line position to the dashed line position) to achieve the purpose of converging the green light towards the center position.

[0073] Please see Figure 4 and Figure 7 When surface B, 221a, emits light:

[0074] When the blue emitting surface 221a emits light, the adjusting blocks 11 of the piezoelectric elements at positions ④⑤⑥⑦ are energized and expand via the control electrode 13, while the adjusting blocks 11 of the piezoelectric elements at other positions are de-energized and contract. This causes the LED module to deflect along the diagonal directions ③④⑦⑧, thereby producing light like... Figure 7 The light rays are deflected (from the solid line position to the dashed line position) to achieve the purpose of converging the blue light towards the center position.

[0075] In one embodiment, please refer to Figure 4The LED component 22 includes an all-in-one light-emitting chip 221, which has four light-emitting surfaces 221a located at the four corners of the chip 221; each adjustment block 11 is connected to one light-emitting surface 221a.

[0076] The LED component 22 employs a multi-in-one light-emitting chip 221, which has four light-emitting surfaces 221a located at its four corners. This design effectively improves the luminous efficiency output of the light-emitting chip 221, resulting in a more uniform light distribution and avoiding the spotting phenomenon caused by concentrated light in traditional LED components 22. Each light-emitting surface 221a can be independently adjusted, making the light adjustment of the LED component 22 more flexible. Users can adjust the direction and intensity of the light according to actual needs to meet the projection requirements of different scenarios.

[0077] Please see Figure 2 , Figure 8 and Figure 9 The present invention also proposes a projection module 2, which includes a projection optical engine 21, a plane lens 23, and a light adjustment structure 1 as described above. One end of each of the plurality of adjustment blocks 11 of the light adjustment structure 1 is connected to the plane lens 23. The projection optical engine 21 has an inner cavity and a projection port. The light adjustment structure 1 and the plane lens 23 are installed in the inner cavity, and the plane lens 23 is opposite to the projection port. The specific structure of the light adjustment structure 1 is as described in the above embodiments. Since this projection module 2 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0078] In this embodiment, the light adjustment structure 1 and the plane lens 23 are combined and assembled inside the projection optical engine 21. The deflection of the plane lens 23 is controlled by the adjustment block 11 of the light adjustment structure 1, so that the light is refracted and the convergence position of each color light is adjusted so that the light converges to the center position.

[0079] Figure 9 The image shows two states of the projection module 2. State 1 is the unpowered state, in which the plane mirror does not deflect and the light does not change its trajectory after passing through the plane lens 23. State 2 is the powered state, in which the piezoelectric material deforms in the direction of the electric field due to the inverse piezoelectric effect, raising the height of the metal spring and causing the metal spring to deflect at a certain angle with the plane lens 23, thereby causing the light path to shift and achieving the purpose of expanding the pixels.

[0080] Based on the deflection angle α of the plane lens 23, the thickness H of the plane lens 23, and the refractive index n of the material of the plane lens 23, the distance δ of the optical path offset can be calculated. The specific calculation formula is as follows:

[0081]

[0082] Therefore, the light adjustment structure 1 in this case can be adaptively installed on other components that need adjustment to adjust the light output angle, thereby improving the projection effect.

[0083] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A light-adjusting structure, characterized in that, LED components are used for installation in projection modules. The component to be adjusted is the LED component. The LED component includes a multi-in-one light-emitting chip, which has four light-emitting surfaces located at the four corners of the chip. The light adjustment structure includes: Multiple adjustment blocks are connected to the component to be adjusted and are arranged around the periphery of the component to be adjusted. At least one common electrode, and a plurality of said adjusting blocks connected in series on said common electrode; and The light adjustment structure includes at least four adjustment blocks, which are located at the four corners of the component to be adjusted. Each adjustment block includes two adjustment parts, which are located at the same corner of the component to be adjusted and arranged at an angle. Each adjustment part includes a piezoelectric element. Multiple control electrodes, each of which is connected to a piezoelectric element and electrically connected to the component to be adjusted; Each of the adjustment blocks drives the component to be adjusted to deflect to a preset position under the control of the corresponding control electrode; The piezoelectric element is connected to the common electrode and the corresponding control electrode; each adjustment block is used to connect to one of the light-emitting surfaces; each adjustment block drives the LED component to deflect at a preset position under the control of the corresponding control electrode, so that when the light-emitting surfaces of different colors of the multi-in-one light-emitting chip emit light, the LED component deflects along the corresponding diagonal direction, so that the light of different colors converges towards the center position.

2. The light adjustment structure as described in claim 1, characterized in that, When the control electrode and the common electrode are connected, the piezoelectric element deforms and drives the preset position of the component to be adjusted to deflect.

3. The light adjustment structure as described in claim 1, characterized in that, Each of the adjustment units includes a plurality of piezoelectric sheets stacked together, and each piezoelectric sheet is connected to the common electrode and a control electrode.

4. The light adjustment structure as described in claim 1, characterized in that, The light adjustment structure also includes a plurality of second elastic elements, each of which is connected at both ends to the component to be adjusted and an adjustment block.

5. A projection module, characterized in that, The projection module includes a projection optical engine, an LED assembly, and a light adjustment structure as described in any one of claims 1 to 4. The light adjustment structure is disposed between the projection optical engine and the LED assembly, and the adjustment block of the light adjustment mechanism is used to adjust the deflection angle of the LED assembly.

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