Deflection structure and projection equipment

Abstract

The invention provides a deflection structure and projection equipment, and relates to the technical field of optical equipment. According to the deflection structure, on the premise that the thickness of the deflection structure is reduced, the offset of the light transmitted by the optical element borne by the deflection structure can meet the use requirement. The deflection structure comprises a support, a carrier assembly, a support driving part and a carrier driving part. Wherein the carrier assembly is arranged on the bracket and is used for arranging the optical element; the bracket driving piece is arranged on the bracket; the carrier driving piece is connected with the carrier assembly and is arranged corresponding to the bracket driving piece; under the interaction of the support driving part and the carrier driving part, the carrier assembly can drive at least two optical elements arranged on the carrier assembly to move. The deflection structure is used for driving the borne optical element to move.

Description

Technical Field

[0001] The present application relates to the technical field of optical equipment, and in particular to a deflection structure and a projection device. Background Art

[0002] The resolution of the projection device is determined by the digital micromirror device (DMD) it carries. DMD is an array composed of multiple high-speed digital light reflectors, specifically composed of many small aluminum reflective mirrors. The number of aluminum reflective mirrors is determined by the display resolution, and one aluminum reflective mirror corresponds to one pixel.

[0003] There are different restrictions on the size of the DMD that can be set in the projection device. Therefore, when the resolution that the DMD can achieve is smaller than the resolution of the projection image to be displayed, it is necessary to control the deflection of the galvanometer in the projection device to improve the resolution of the projection image.

[0004] The size of the DMD used in the projection device determines the cost of the projection device. Using a relatively small DMD is conducive to controlling the cost of the projection device. Accordingly, the size of the galvanometer needs to be set to match the size of the DMD. The smaller the thickness of the galvanometer, the more limited the range of motion that can be produced, and there is a problem that the light offset cannot meet the requirements. Summary of the invention

[0005] The present application provides a deflection structure and a projection device, which can reduce the thickness of the deflection structure and ensure that the offset of light transmitted through an optical element carried by the deflection structure meets the use requirements.

[0006] On the one hand, the present application provides a deflection structure, which includes: a bracket, a carrier assembly, a bracket driver and a carrier driver; wherein the carrier assembly has at least two fixed parts and at least two bearing parts, the fixed parts are elastic and can be deformed under the action of external force, the carrier assembly is arranged on the bracket through the fixed parts, and at least one deflection axis of the bearing part is formed by at least two fixed parts, and the bearing part is used to set the optical element; the bracket driver is arranged on the bracket; the carrier driver is connected to the bearing part and is arranged corresponding to the bracket driver; under the interaction between the bracket driver and the carrier driver, the bearing part can make a reciprocating deflection motion relative to the bracket around the deflection axis through the fixed part to drive the at least two optical elements arranged on the bearing part to move.

[0007] The deflection structure provided in the present application is provided with a bracket, through which other parts in the deflection structure can be installed and supported; the carrier assembly is provided in a structural form including an elastic fixing part and at least two supporting parts, so that on the one hand, the carrier assembly can be elastically deformed by the elastic fixing part, so that the supporting part on the carrier assembly can generate the required movement through the fixing part; on the other hand, at least two supporting parts are provided on the carrier assembly, and at least two optical elements can be provided on the carrier assembly, so that the at least two optical elements can be driven to generate the required movement; and corresponding bracket driving members and carrier driving members are respectively provided on the bracket and the carrier assembly, so that the bracket driving member and the carrier driving member can generate relative forces, so as to provide power to the supporting part through the carrier driving member, so that the supporting part can drive the at least two optical elements carried thereon to move; at the same time, the bracket driving member is provided inside the bracket, in the thickness direction of the bracket, the space occupied by the bracket driving member can be saved, so that the overall thickness of the deflection structure can be reduced.

[0008] Compared with the structure in the related art in which a bearing part is provided in the deflection structure, and only one optical element can be provided, the deflection structure provided in the present application can be provided with at least two optical elements on the carrier assembly, so that during the movement of the at least two optical elements, the light can be refracted at least twice by the at least two optical elements in sequence, so that a larger offset can be generated in the transmission path of the light. Then, when the change range of the light transmission path is determined, when the optical element carried on the carrier assembly is moved with a smaller movement amplitude, the offset of the light transmission path can meet the use requirements, and the offset of the light transmitted through the optical element carried by the deflection structure can meet the use requirements under the premise of reducing the thickness of the deflection structure and reducing the movement amplitude of the carrier assembly and the carrier driving member.

[0009] In a possible implementation of the present application, the deflection structure includes two brackets arranged in parallel; the carrier assembly includes two carriers, each of which has a bearing portion, and the two carriers are respectively arranged on the two brackets along the thickness direction of the bracket.

[0010] In a possible implementation of the present application, the carrier assembly includes two carriers, each of which has a bearing portion, and the two carriers are respectively located on two sides of the bracket along the thickness direction of the bracket.

[0011] In one possible implementation of the present application, a driving through hole is provided on the bracket, and the bracket driving member is arranged at a position inside the bracket corresponding to the driving through hole; the carrier driving member is located inside the driving through hole, and along the thickness direction of the bracket, the carrier driving member extends outside the driving through hole, and both carriers are connected to the carrier driving member.

[0012] In a possible implementation of the present application, the support driving member is disposed in the support around the driving through hole, and in the circumferential direction along the driving through hole, the support driving member is disposed around the carrier driving member.

[0013] In a possible implementation of the present application, at least a portion of the support driving member is located in the driving through hole, and the carrier driving member is located between the support driving member and the hole wall of the driving through hole.

[0014] In one possible implementation of the present application, the bracket driver is embedded in the bracket, and the carrier driver includes a first driver and a second driver; along the thickness direction of the bracket, the first driver and the second driver are respectively located on both sides of the bracket, the first driver is connected to one of the two carriers and is arranged corresponding to the bracket driver; the second driver is connected to the other of the two carriers and is arranged corresponding to the bracket driver.

[0015] In a possible implementation of the present application, along the thickness direction of the bracket, the projection of the first driving member is staggered with the second driving member, and the projection of the second driving member is staggered with the first driving member.

[0016] In a possible implementation of the present application, the deflection axes of the carrying parts on the two carriers intersect.

[0017] In a possible implementation of the present application, under the action of the support driving member on the first driving member and the second driving member, the bearing parts on the two carriers perform reciprocating deflection motion synchronously or asynchronously.

[0018] In a possible implementation of the present application, the bracket driving member includes a third driving member and a fourth driving member, and the third driving member and the fourth driving member are arranged on the bracket at an angle, and the carrier driving member includes two groups of fifth driving members and two groups of sixth driving members; wherein, in the thickness direction of the bracket, the two groups of fifth driving members are respectively located on both sides of the bracket, and the two groups of sixth driving members are respectively located on both sides of the bracket; one group of fifth driving members and one group of sixth driving members are both connected to one of the two carriers, and the other group of fifth driving members and the other group of sixth driving members are both connected to the other of the two carriers; and the two groups of fifth driving members are both arranged corresponding to the third driving members, and the two groups of sixth driving members are both arranged corresponding to the fourth driving members.

[0019] In a possible implementation of the present application, the carrier includes a carrying body having an avoidance through hole at the center thereof; the carrying portion includes a stopper extending from an edge of the carrying body, the stopper extending along the thickness direction of the carrying body.

[0020] In one possible implementation of the present application, the carrier includes a carrying body; the fixing part includes an elastic part and a mounting part, the elastic part is extended from the edge of the carrying body and has elasticity, the mounting part is connected to the elastic part, and the carrier is fixed on the bracket through the mounting part.

[0021] In a possible implementation of the present application, the elastic portion includes a straight cantilever, the straight cantilever is extended from an edge of the bearing body, and the mounting portion is connected to an end of the straight cantilever away from the bearing body.

[0022] In one possible implementation of the present application, the elastic portion includes at least two cantilever segments connected in sequence, one of the at least two cantilever segments is extended from the edge of the supporting body, and the extension directions of the two connected cantilever segments are different; the mounting portion is connected to the cantilever segment of the at least two cantilever segments that is away from the supporting body.

[0023] In one possible implementation of the present application, the fixing portion also includes a bending section, the mounting portion includes a mounting plate, the mounting plate and the elastic portion are connected via the bending section, and an extension direction of the bending section has an angle with the plane where the elastic portion is located, so that the mounting plate and the elastic portion are located in different planes.

[0024] In a possible implementation of the present application, the bracket driver includes an electromagnetic member, and the carrier driver includes a permanent magnet member; or, the bracket driver includes a permanent magnet member, and the carrier driver includes an electromagnetic member; or, both the bracket driver and the carrier driver are electromagnetic members.

[0025] In a possible implementation of the present application, the deflection structure further includes at least two optical elements; wherein each optical element is disposed on a supporting portion, and the two optical elements are parallel to each other.

[0026] In a possible implementation of the present application, the deflection angles of the two optical elements are determined by:

[0027]

[0028] Wherein, X represents the target deflection amount of the light after passing through two optical elements, E represents the thickness of one optical element, γ1 represents the deflection angle of one optical element, n1 represents the refractive index of one optical element, F represents the thickness of the other optical element, γ2 represents the deflection angle of the other optical element, and n2 represents the refractive index of the other optical element.

[0029] In one possible implementation of the present application, the supporting portion drives the optical element to reciprocate at a deflection angle according to a target frequency, so that the deflected light beam passing through the optical element projects at least two frames of images within at least one timing period, and two adjacent frames of images do not completely overlap.

[0030] On the other hand, the present application provides a projection device, which includes: an optomechanical assembly, a lens assembly, an optical element and a deflection structure provided by any one of the above items; wherein the optical element is fixed on a bearing portion in the deflection structure, and the deflection structure is arranged between the optomechanical assembly and the lens assembly.

[0031] The projection device provided in the present application, since it includes any of the above-mentioned deflection structures, has the same technical effect, that is, the offset of the light transmitted through the optical element carried by the deflection structure can meet the use requirements while reducing the thickness of the deflection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Explosion of the deflection structure provided for this application Figure 1 ;

[0033] Figure 2 A schematic diagram of the structure of the bracket and the bracket driving member in the deflection structure provided in the present application;

[0034] Figure 3 Schematic diagram of the deflection structure provided for this application Figure 1 ;

[0035] Figure 4 Explosion of the deflection structure provided for this application Figure 2 ;

[0036] Figure 5 Explosion of the deflection structure provided for this application Figure 3 ;

[0037] Figure 6 A cross-sectional view of a portion of the deflection structure provided in this application Figure 1 ;

[0038] Figure 7 A cross-sectional view of a portion of the deflection structure provided in this application Figure 2 ;

[0039] Figure 8 Schematic diagram of the deflection structure provided for this application Figure 2 ;

[0040] Fig. 9 A cross-sectional view of a portion of the deflection structure provided in this application Figure 3 ;

[0041] Fig.10 Explosion of the deflection structure provided for this application Figure 4 ;

[0042] Fig.11 A schematic cross-sectional view of a support and a support driving member of a deflection structure provided in the present application;

[0043] Fig.12 Explosion five of the deflection structure provided for this application;

[0044] Fig.13 Schematic diagram of the carrier of the deflection structure provided in this application Figure 1 ;

[0045] Fig.14 Schematic diagram of the carrier of the deflection structure provided in this application Figure 2 ;

[0046] Fig.15 Schematic diagram of the carrier of the deflection structure provided in this application Figure 3 ;

[0047] Fig.16 Provided for this application Fig.14 A partial enlarged schematic diagram of the H portion in the middle;

[0048] Fig.17 A cross-sectional view of a portion of the deflection structure provided in this application Figure 3 ;

[0049] Fig.18 A schematic diagram of the deflection of an optical element in the deflection structure provided by the present application;

[0050] Fig.19 This is a schematic diagram of a picture formed by light passing through the deflection structure provided in the present application.

[0051] Description of reference numerals:

[0052] 1-bracket; 11-driving through hole; 12-accommodating through hole; 13-mounting hole; 2-carrier; 21-carrying body; 211-avoiding through hole; 212-carrying part; 2121-stop plate; 2122-supporting ring; 213-connecting part; 22-fixing part; 221-elastic part; 2211-cantilever section; 222-mounting part; 223-bending section; 3-bracket driving member; 31-third driving member; 32-fourth driving member; 4-carrier driving member; 41-first driving member; 42-second driving member; 43-fifth driving member; 44-sixth driving member; 5-optical element; 6-light; 7-first image; 8-second image; A-first deflection axis; B-thickness direction; C-first direction; D-second direction; G-second deflection axis; X-target offset. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0054] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

[0055] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0056] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0057] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0058] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0059] The embodiment of the present application provides a projection device, the working principle of which is to irradiate light onto the image display element to generate an image, and then project it through a lens. Before projecting the image generated by the display element, the light can be processed, and the optical element that processes the light needs to move. During the movement of the optical element along a preset path, the light is processed to form a projection picture that is finally projected through the lens.

[0060] In some embodiments of the present application, reference Figure 1 , Figure 1 The explosion of the deflection structure provided by the present application is shown Figure 1 The projection device provided in the embodiment of the present application includes: an optical-mechanical assembly, a lens assembly, an optical element 5 and a deflection structure; wherein the optical-mechanical assembly is used to generate projection light; the lens assembly is used to form the projection light into a projection picture of a desired size; the optical element 5 can be an optical lens, the optical element 5 is arranged on the bearing portion 212 in the deflection structure, and the deflection structure is arranged between the optical-mechanical assembly and the lens assembly, that is, the deflection structure is arranged on the path of the projection light generated by the optical-mechanical assembly to be transmitted to the lens assembly, and the optical element 5 carried by it is driven to move by the deflection structure to process the projection light, and the processed projection light passes through the lens assembly to form a projection picture projected on the screen.

[0061] At the same time, the embodiment of the present application also provides a deflection structure. For the convenience of description, the embodiment of the present application takes the projection device as an example to illustrate the deflection structure provided by the embodiment of the present application, but does not limit the deflection structure to be only applied to the projection device. The deflection structure provided by the embodiment of the present application can be applied to any required optical device.

[0062] Reference Figure 2 and Figure 3 , Figure 2 The structure diagram of the support and the support driving member in the deflection structure provided by the present application is shown. Figure 3 The schematic diagram of the deflection structure provided by the present application is shown Figure 1 .like Figure 1 , Figure 2 and Figure 3 As shown, the deflection structure includes: a bracket 1, a carrier assembly, a bracket driver 3 and a carrier driver 4; wherein the carrier assembly has at least two fixing parts 22 and at least two bearing parts 212, the fixing parts 22 are elastic and can be deformed under the action of external force, the carrier assembly is arranged on the bracket 1 through the fixing parts 22, and at least one deflection axis of the bearing part 212 is formed by at least two fixing parts 22, and the bearing part 212 is used to set the optical element 5; the bracket driver 3 is arranged inside the bracket 1; the carrier driver 4 is connected to the bearing part 212 and is arranged corresponding to the bracket driver 3; under the interaction of the bracket driver 3 and the carrier driver 4, the bearing part 212 can make a reciprocating deflection motion relative to the bracket 1 around the deflection axis through the fixing parts 22, so as to drive the at least two optical elements 5 arranged on the bearing part 212 to move.

[0063] The main function of the bracket 1 in the embodiment of the present application is to install and support other parts in the deflection structure, such as Figure 1 and Figure 2As shown, the bracket 1 can be set as a plate-like structure, and a receiving through hole 12 penetrating the bracket 1 is set at the center position of the bracket 1 along the thickness direction B of the bracket 1. The shape of the receiving through hole 12 can be set according to the shape of the optical element 5. The receiving through hole 12 is set to match the shape of the optical element 5, and a part of the optical element 5 can be accommodated in the receiving through hole 12. A mounting hole 13 can also be set on the bracket 1, and the position of the mounting hole 13 corresponds to the position of the fixing part 22 of the carrier assembly, so that the fixing part 22 is connected to the bracket 1 through the mounting hole 13, so that the carrier assembly is installed on the bracket 1. A driving through hole 11 adapted to the bracket driving member 3 can also be set on the bracket 1 according to the setting position of the bracket driving member 3 on the bracket 1, so that the bracket driving member 3 is set in the driving through hole 11.

[0064] The carrier assembly in the embodiment of the present application is used to install and carry the optical element 5. Under the drive of the bracket driving member 3 and the carrier driving member 4, the carrier assembly can drive the optical element 5 to move. The carrier assembly needs to be fixedly installed on the bracket 1. The carrier assembly can be set to a structural form including a carrier 2, and the carrier 2 can be set to a thin sheet structure. For example, the carrier 2 can be made of stainless steel or other materials that have both certain strength and rigidity, and high toughness and certain elasticity.

[0065] Exemplarily, a fixing portion 22 may be provided on the carrier 2 in the carrier assembly, and at least a portion of the fixing portion 22 is elastic. Under the action of an external force, the fixing portion 22 may be deformed, and when the external force disappears, the fixing portion 22 may return to its original shape, that is, the fixing portion 22 may be elastically deformed. A through hole corresponding to the mounting hole 13 on the bracket 1 may be provided on the fixing portion 22, so that the fixing portion 22 may be installed at a position corresponding to the mounting hole 13 on the bracket 1 by using a fastener, such as a screw or a rivet; or, an adhesive method may be used, such as applying adhesive between the fixing portion 22 and the bracket 1, so that the carrier 2 in the carrier assembly may be fixedly installed on the bracket 1 through the fixing portion 22.

[0066] In another example, at least two bearing parts 212 may be provided on the carrier assembly, and the structural shape of the bearing part 212 is adapted to the structural shape of the optical element 5, and the optical element 5 may be fixedly mounted on the carrier 2 through the bearing part 212. Figure 3 As shown, after the carrier 2 in the carrier assembly is fixedly mounted on the bracket 1 through the two fixing parts 22, the other parts of the carrier 2 can move through the two elastic fixing parts 22, and during the movement, the other parts of the carrier 2 can form a first deflection axis A of the bearing part 212 along the line connecting the two relatively arranged fixing parts 22, and the bearing part 212 can move around the first deflection axis A relative to the bracket 1.

[0067] In the embodiment of the present application, if it is necessary to enable the bearing portion 212 in the carrier assembly to move relative to the bracket 1 , a driving member capable of providing a driving force to the bearing portion 212 needs to be provided between the bracket 1 and the carrier assembly.

[0068] Exemplarily, a support driver 3 may be provided inside the support 1, and a carrier driver 4 corresponding to the support driver 3 may be provided on the carrier 2 in the carrier assembly. The carrier driver 4 is moved by the interaction force between the support driver 3 and the carrier driver 4, and the carrier driver 4 may drive the bearing part 212 on the carrier 2 to move through the fixing part 22, thereby enabling the bearing part 212 to move relative to the support 1. At the same time, by controlling the direction, magnitude and formation period of the force between the support driver 3 and the carrier driver 4, the bearing part 212 may be made to perform reciprocating deflection motion relative to the support 1 around the first deflection axis A, thereby enabling the at least two optical elements 5 provided on the bearing part 212 to also perform reciprocating deflection motion.

[0069] The deflection structure provided in the embodiment of the present application is provided with a bracket 1, and other parts in the deflection structure can be installed and carried by the bracket 1; the carrier component is provided as a structural form including an elastic fixing part 22 and at least two bearing parts 212, on the one hand, the carrier component can be elastically deformed by the elastic fixing part 22, so that the bearing part 212 on the carrier component can generate the required movement through the fixing part 22; on the other hand, at least two bearing parts 212 are provided on the carrier component, and at least two optical elements 5 can be provided on the carrier component, so that the at least two optical elements 5 can be driven to generate the required movement; and corresponding bracket driving members 3 and carrier driving members 4 are respectively provided on the bracket 1 and the carrier component, so that the bracket driving members 3 and the carrier driving members 4 can generate relative forces, so as to provide power to the bearing part 212 through the carrier driving member 4, so that the bearing part 212 can drive the at least two optical elements 5 carried to move; at the same time, the bracket driving member 3 is arranged inside the bracket 1, in the thickness direction B of the bracket 1, which can save the space occupied by the bracket driving member 3, thereby reducing the overall thickness of the deflection structure.

[0070] Compared with the structure of the related art in which only one optical element 5 can be set in a deflection structure with one bearing part 212, the deflection structure provided in the embodiment of the present application can be provided with at least two optical elements 5 on the carrier assembly, so that during the movement of the at least two optical elements 5, the light can be refracted at least twice by the at least two optical elements 5 in sequence, so that a larger offset can be generated in the transmission path of the light. Then, when the change range of the light transmission path is determined, when the optical element 5 carried on the carrier assembly is moved with a smaller movement amplitude, the offset of the light transmission path can meet the use requirements, and the offset of the light transmitted by the optical element 5 carried by the deflection structure can meet the use requirements under the premise of reducing the thickness of the deflection structure and reducing the movement amplitude of the carrier assembly and the carrier driving member 4.

[0071] In some possible implementations of the present application, refer to Figure 4 , Figure 4 The explosion of the deflection structure provided by the present application is shown Figure 2 The deflection structure may be configured to include two brackets 1 arranged in parallel; the carrier assembly includes two carriers 2, each of which has a bearing portion 212, and the two carriers 2 are respectively arranged on the two brackets 1 in the thickness direction B of the bracket 1.

[0072] In the embodiment of the present application, the deflection structure needs to be able to carry at least two optical elements 5, such as Figure 4 As shown, two brackets 1 can be arranged in the deflection structure, and the two brackets 1 can be arranged in parallel with each other. The two brackets 1 can be connected as a whole, or can be arranged independently, so as to be fixedly installed in the optical device respectively.

[0073] In the embodiment of the present application, the carrier assembly can be configured to include two carriers 2, and the two carriers 2 can be configured to have the same structure or different structures. A bearing portion 212 can be provided on each carrier 2, and two fixing portions 22 can also be provided on each bracket 1.

[0074] For example, along the thickness direction B of the bracket 1, the two brackets 1 can be arranged in parallel, and the two carriers 2 can be arranged on the same side of the two brackets 1, for example, Figure 4 As shown in , one carrier 2 can be arranged on the upper side of the corresponding bracket 1, and the other carrier 2 can also be arranged on the upper side of the corresponding other bracket 1; the two carriers 2 can also be arranged on the sides close to each other on the two brackets 1; the two carriers 2 can also be arranged on the sides far away from each other on the two brackets 1. The embodiment of the application does not limit the arrangement positions of the two carriers 2 on the two brackets 1.

[0075] In another example, a deflection structure having two brackets 1 and two carriers 2 can be applied to a projection device. When a larger-sized liquid crystal display (LCD) is used as the light modulation element in the projection device, the diameter of the imaging circle formed by the lens assembly is also larger. For example, when the imaging circle diameter φ ranges from 0≤φ≤75.4mm, the corresponding LCD can be 1 to 3.5 inches. In the case where the LCD size is larger, the required size of the optical element 5 is also larger, and the size of the deflection structure carrying the optical element 5 is also larger. In this embodiment, since the deflection structure is set to a structural form including two brackets 1 and two carriers 2, when the parts in the deflection structure are set to a larger-sized structural form, since the two optical elements 5, the two carriers 2, the carrier driving member 4 and the bracket driving member 3 are respectively arranged on the two brackets 1, and then the two brackets 1 are independently fixed in the projection device, the influence of the two optical elements 5 on each other due to vibration during the movement can be reduced, thereby improving the stability of the operation of the projection device.

[0076] In the above embodiment, since the deflection structure is configured to include two brackets 1 and two carriers 2, and the two carriers 2 are respectively arranged on the two brackets 1 in the thickness direction B of the bracket 1, the two brackets 1 can be respectively fixedly installed in the optical device, which can improve the flexibility of the installation of the deflection structure; at the same time, a bearing portion 212 is respectively arranged on the two carriers 2, and the two optical elements 5 can be respectively installed on the two bearing portions 212 on the two carriers 2, so that the two optical elements 5 can be independently installed in the optical device through the two brackets 1. In this way, in the process of driving the two optical elements 5 to move respectively through the bearing portions 212 on the two carriers 2, the two brackets 1 are independently arranged in the optical device, which can reduce the influence of the two optical elements 5 carried on each other due to vibration during the movement.

[0077] In some possible implementations of the present application, the deflection structure can be configured as a carrier assembly including two carriers 2 , each of which has a bearing portion 212 , and the two carriers 2 are respectively located on both sides of the bracket 1 along the thickness direction B of the bracket 1 .

[0078] In the embodiment of the present application, in order to facilitate the control of the motion paths of at least two optical elements 5 arranged in the deflection structure, as shown in FIG. Figure 1 As shown, two carriers 2 may be provided in the deflection structure, and the two carriers 2 may be used as a carrier assembly, and a bearing portion 212 may be provided on each carrier 2 to respectively mount the two optical elements 5 on the respective bearing portions 212 on the two carriers 2 .

[0079] For example, along the thickness direction B of the bracket 1, the two carriers 2 can be respectively arranged on both sides of the bracket 1. In this way, the two optical elements 5 carried by the carrying portions 212 on the two carriers 2 can extend toward the accommodating through hole 12 on the bracket 1, so that at least a portion of the two optical elements 5 are accommodated in the accommodating through hole 12.

[0080] In the above embodiment, since two carriers 2 are provided in the deflection structure and a bearing portion 212 is provided on each carrier 2, two optical elements 5 can be installed on the deflection structure through two independent bearing portions 212; and the two carriers 2 are respectively provided on both sides of the bracket 1, and the two bearing portions 212 can be independently driven to move by the bracket driving member 3 and the carrier driving member 4, thereby increasing the control method for the movement path of the two optical elements 5, so that the two optical elements 5 have more diverse movement methods.

[0081] In some possible implementations of the present application, refer to Figure 5 , Figure 5 The explosion of the deflection structure provided by the present application is shown Figure 3 .like Figure 3 and Figure 5 As shown, the bracket 1 can be set to a structural form with a driving through hole 11 on the bracket 1, and the bracket driving component 3 is set at a position inside the bracket 1 corresponding to the driving through hole 11; the carrier driving component 4 is located inside the driving through hole 11, and in the thickness direction B along the bracket 1, the carrier driving component 4 extends to the outside of the driving through hole 11, and the two carriers 2 are both connected to the carrier driving component 4.

[0082] In an embodiment of the present application, a driving through hole 11 can be set on the bracket 1 at the position where the bracket driving component 3 is set. The driving through hole 11 penetrates the bracket 1 along the thickness direction B of the bracket 1. The shape of the driving through hole 11 is adapted to the shape of the carrier driving component 4, and the carrier driving component 4 can be accommodated in the driving through hole 11.

[0083] For example, the support driver 3 can be embedded in the support 1 and surround the driving through hole 11, or a portion of the support driver 3 is located in the driving through hole 11 and a portion of the support driver 3 is embedded in the support 1. In the thickness direction B of the support 1, the length of the carrier driver 4 is greater than the thickness of the support 1, the carrier driver 4 is inserted into the driving through hole 11, and both ends of the carrier driver 4 are located outside the driving through hole 11, then the bearing parts 212 on the two carriers 2 can be fixedly connected to the carrier driver 4.

[0084] In the above embodiment, since the bracket driver 3 is arranged at a position corresponding to the driving through hole 11 on the bracket 1, and the bracket driver 3 is arranged inside the bracket 1, the space occupied by the bracket driver 3 can be saved along the thickness direction B of the bracket 1, which is beneficial to reducing the thickness of the deflection structure; at the same time, the carrier driver 4 is arranged in the driving through hole 11, and the carrier driver 4 is extended to the outside of the driving through hole 11, the two carriers 2 can be fixedly connected to the same carrier driver 4, so that the two bearing parts 212 on the two carriers 2 can be driven by the carrier driver 4 to move synchronously, and then the two optical elements 5 arranged on the bearing parts 212 can be driven to move synchronously.

[0085] In some possible implementations of the present application, refer to Figure 6 , Figure 6 A cross-sectional view showing a partial structure of the deflection structure provided by the present application Figure 1 The deflection structure may be configured as a structure in which the support driver 3 is disposed in the support 1 around the driving through hole 11 , and in the circumferential direction along the driving through hole 11 , the support driver 3 is disposed around the carrier driver 4 .

[0086] In the embodiment of the present application, the carrier driving member 4 can be inserted into the driving through hole 11 on the bracket 1, and the two ends of the carrier driving member 4 are respectively fixedly connected to the two carriers 2 in the thickness direction B of the bracket 1. The bracket driving member 3 can be arranged inside the bracket 1 around the driving through hole 11, that is, in the circumferential direction along the driving through hole 11, the bracket driving member 3 is annular in structure, and the bracket driving member 3 surrounds the driving through hole 11 and is embedded in the bracket 1. In this way, the bracket driving member 3 can surround the carrier driving member 4.

[0087] In the above embodiment, since the carrier driving member 4 is inserted into the driving through hole 11 on the bracket 1, the bracket driving member 3 is arranged in a structural form surrounding the driving through hole 11, and the bracket driving member 3 is embedded in the bracket 1, when a mutual force is generated between the bracket driving member 3 and the carrier driving member 4, the carrier driving member 4 can be subjected to a uniform force in the radial direction of the driving through hole 11, and the carrier driving member 4 will not move in the radial direction of the driving through hole 11, while in the thickness direction B of the bracket 1, the magnitude of the force applied to the carrier driving member 4 can be changed, thereby controlling the movement amplitude and movement period of the bearing portion 212 on the carrier 2.

[0088] In some possible implementations of the present application, refer to Figure 7 , Figure 7 A cross-sectional view showing a partial structure of the deflection structure provided by the present application Figure 2 .like Figure 7As shown, at least a portion of the support driving member 3 can be located in the driving through hole 11 , and the carrier driving member 4 can be located between the support driving member 3 and the hole wall of the driving through hole 11 .

[0089] In the embodiment of the present application, the two ends of the support driver 3 can be fixed on the hole wall of the driving through hole 11, so that a part of the support driver 3 is placed horizontally in the driving through hole 11. In the radial direction of the driving through hole 11, a carrier driver 4 can be arranged between the support driver 3 and the hole wall of the driving through hole 11, and the carrier driver 4 extends to the outside of the driving through hole 11 along the thickness direction B of the support 1, and the two ends of the carrier driver 4 are respectively fixedly connected to the two carriers 2. For example, in the radial direction of the driving through hole 11, two carrier drivers 4 can be symmetrically arranged on both sides of the support driver 3, and the two carrier drivers 4 are fixedly connected to the two carriers 2.

[0090] In the above embodiment, the support driver 3 can be fixed on the hole wall of the driving through hole 11, or a part of the support driver 3 can be extended into the inside of the support 1, so that at least a part of the support driver 3 is located in the driving through hole 11; the carrier driver 4 can be arranged in the space between the support driver 3 and the hole wall of the driving through hole 11 along the radial direction of the driving through hole 11, and two carrier drivers 4 can be arranged on both sides of the support driver 3, and each carrier driver 4 is fixedly connected to two carriers 2 along the thickness direction B of the support 1. In this way, since at least a part of the support driver 3 and the carrier driver 4 are both located in the driving through hole 11, it is beneficial to the heat dissipation of the support driver 3 and the carrier driver 4, and at the same time, the space required for the support driver 3 and the carrier driver 4 to be arranged in the thickness direction B of the support 1 can be saved, which is beneficial to reducing the thickness of the deflection structure.

[0091] In some possible implementations of the present application, refer to Figure 8 and Fig. 9 , Figure 8 The schematic diagram of the deflection structure provided by the present application is shown Figure 2 , Fig. 9 A cross-sectional view showing a partial structure of the deflection structure provided by the present application Figure 3 .like Figure 8 and Fig. 9 As shown, the bracket driver 3 in the deflection structure can be embedded in the bracket 1, and the carrier driver 4 is set to a structural form including a first driver 41 and a second driver 42; along the thickness direction B of the bracket 1, the first driver 41 and the second driver 42 are respectively located on both sides of the bracket 1, the first driver 41 is connected to one of the two carriers 2, and is set corresponding to the bracket driver 3; the second driver 42 is connected to the other of the two carriers 2, and is set corresponding to the bracket driver 3.

[0092] In the embodiment of the present application, the bracket driving member 3 can be embedded in the bracket 1, and the carrier driving member 4 can be set to a structural form including a first driving member 41 and a second driving member 42, the first driving member 41 is fixedly connected to one of the two carriers 2, and the second driving member 42 is fixedly connected to the other of the two carriers 2.

[0093] For example, a bracket driver 3 may be embedded in two opposite corners of the bracket 1, respectively, so that the bracket driver 3 is completely located inside the bracket 1. Alternatively, two bracket drivers 3 may be provided on both sides of the bracket 1 along the thickness direction of the bracket 1. For example, both bracket drivers 3 may be electromagnetic coils, which are respectively fixed on the two side surfaces of the bracket 1. The two electromagnetic coils are respectively provided corresponding to the first driver 41 and the second driver 42. At this time, the first driver 41 and the second driver 42 may be magnets or electromagnetic coils.

[0094] In another example, the first driving member 41 and the second driving member 42 can be both configured as a sheet-like structure, and the first driving member 41 and the second driving member 42 are both adapted to the bracket driving member 3. In the thickness direction B of the bracket 1, the first driving member 41 is disposed on one side of the bracket 1, so that the first driving member 41 is fixedly connected to one carrier 2; the second driving member 42 is disposed on the other side of the bracket 1, so that the second driving member 42 is fixedly connected to another carrier 2, and the first driving member 41 and the second driving member 42 are both disposed at positions corresponding to the bracket driving member 3.

[0095] In the above embodiment, since the carrier driving member 4 is configured to include a first driving member 41 and a second driving member 42, the first driving member 41 and the second driving member 42 can be fixedly connected to the two carriers 2 located on both sides of the bracket 1. In this way, the bracket driving member 3 can simultaneously generate a force on the first driving member 41 and the second driving member 42, so that the first driving member 41 and the second driving member 42 can simultaneously drive the bearing parts 212 on the two carriers 2 to move.

[0096] In some possible implementations of the present application, such as Fig. 9 As shown, the first driving member 41 and the second driving member 42 can be arranged such that: in the thickness direction B of the bracket 1 , the projection of the first driving member 41 is staggered with the second driving member 42 , and the projection of the second driving member 42 is staggered with the first driving member 41 .

[0097] In the embodiment of the present application, since the first driving member 41 and the second driving member 42 share the same bracket driving member 3, in order to reduce the mutual influence between the first driving member 41 and the second driving member 42, the first driving member 41 and the second driving member 42 can be staggered.

[0098] Exemplarily, along the thickness direction B of the bracket 1, the first driving member 41 and the second driving member 42 are arranged so that their projections on the bracket 1 do not overlap. That is, the projection of the first driving member 41 is staggered from the second driving member 42, the projection of the first driving member 41 will not be located on the second driving member 42, and the projection of the second driving member 42 will not be located on the first driving member 41.

[0099] Another example, such as Fig. 9 As shown, a second driving member 42 may be provided, and the second driving member 42 is provided at a position close to the center of the support driving member 3. Two first driving members 41 are provided at the same time, and the two first driving members 41 are respectively located opposite to the two ends of the support driving member 3.

[0100] In the above embodiment, along the thickness direction B of the bracket 1, since the first driving member 41 and the second driving member 42 are arranged in a structural form in which their projections are staggered, this can not only make the two carriers 2 subject to uniform force, but also reduce the mutual influence between the first driving member 41 and the second driving member 42, thereby facilitating the precise control of the movement paths of the two carriers 2.

[0101] In some possible implementations of the present application, refer to Fig.10 and Fig.11 , Fig.10 The explosion of the deflection structure provided by the present application is shown Figure 4 , Fig.11 The cross-sectional schematic diagram of the support and support driving member of the deflection structure provided by the present application is shown. The deflection structure can be arranged in a structural form in which the first deflection axes A of the bearing parts 212 on the two carriers 2 intersect.

[0102] In the present application embodiment, Fig.10 As shown, the two fixing portions 22 of one carrier 2 can be distributed along the first direction C, so that the first deflection axis A of the bearing portion 212 on the one carrier 2 can be along the first direction C; the two fixing portions 22 of another carrier 2 can be distributed along the second direction D, so that the first deflection axis A of the bearing portion 212 on the other carrier 2 can be along the second direction D, and the first direction C and the second direction D intersect with each other.

[0103] For example, Fig.11 As shown, a support driving member 3 can be respectively arranged at the four corners of the rectangular support 1. In this way, the two support driving members 3 located at the diagonal corners of the support 1 are regarded as a group of support driving members 3, and the connecting lines of the respective support driving members 3 in the two groups of support driving members 3 intersect with each other; correspondingly, as shown in FIG. Fig.10As shown, two carrier driving members 4 are respectively arranged at the diagonals of each carrier 2, that is, two first driving members 41 are arranged on one carrier 2, the two first driving members 41 are respectively positioned opposite to a group of bracket driving members 3, and the line connecting the two first driving members 41 intersects with the first direction C, and two second driving members 42 are arranged on the other carrier 2, the two second driving members 42 are respectively positioned opposite to another group of bracket driving members 3, and the line connecting the two second driving members 42 intersects with the second direction D.

[0104] In the above embodiment, since the first deflection axes A of the bearing parts 212 on the two carriers 2 in the deflection structure are set to a crossed structural form, and driving members are respectively arranged between the bracket 1 and the two carriers 2, the driving members used to drive the two carriers 2 are independent of each other, and the bearing parts 212 on the two carriers 2 can be independently driven by the carrier driving members 4 on the two carriers 2, so that the bearing parts 212 on each carrier 2 can be independently moved around their respective first deflection axes A, and then the movement amplitude and movement frequency of the bearing parts 212 on the two carriers 2 can be respectively controlled by controlling the force generated between the bracket driving member 3 and the carrier driving member 4.

[0105] In some possible implementations of the present application, under the action of the support driving member 3 on the first driving member 41 and the second driving member 42, the bearing parts 212 on the two carriers 2 perform reciprocating deflection motion synchronously, or perform reciprocating deflection motion asynchronously.

[0106] In the present application embodiment, Figure 8 and Fig.10 As shown, the two carriers 2 are fixedly connected to the first driving member 41 and the second driving member 42 respectively. The first driving member 41 and the second driving member 42 can share the same bracket driving member 3, or correspond to a bracket driving member 3 respectively. The movement mode of the optical elements 5 carried on the two carrying parts 212 can be controlled by controlling the action time of the force between the bracket driving member 3 and the first driving member 41 and the second driving member 42, as well as the magnitude of the force.

[0107] Exemplarily, the bearing parts 212 on the two carriers 2 can be made to perform reciprocating deflection motion synchronously, that is, the motions of the optical elements 5 carried on the two bearing parts 212 are consistent. For example, when the parameters of the first driving member 41 and the second driving member 42 are the same, such as the first driving member 41 and the second driving member 42 both use magnets with the same magnetic poles, and the bracket driving member 3 uses an electromagnetic coil, when the first driving member 41 and the second driving member 42 are simultaneously acted upon by the corresponding bracket driving member 3, the magnitude and direction of the force acted upon by the first driving member 41 and the second driving member 42 are the same, so that the first driving member 41 and the second driving member 42 can be made to move synchronously, and further, the optical elements 5 carried on the two bearing parts 212 can be driven to move synchronously.

[0108] In another example, the bearing parts 212 on the two carriers 2 can also be made to perform asynchronous reciprocating deflection motion, that is, the optical elements 5 carried on the two bearing parts 212 can independently move according to the motion cycle and motion amplitude of their respective deflection motions. For example, in the case where the parameters of the first driving member 41 and the second driving member 42 are different, such as the first driving member 41 and the second driving member 42 respectively use magnets with opposite magnetic poles, and the bracket driving member 3 uses an electromagnetic coil, although the first driving member 41 and the second driving member 42 are simultaneously subjected to the force of the corresponding bracket driving member 3, the magnitude and direction of the force respectively received by the first driving member 41 and the second driving member 42 are different, so that the first driving member 41 and the second driving member 42 can be made to move asynchronously, and then the optical elements 5 carried on the two bearing parts 212 can be driven to independently move according to the motion cycle and motion amplitude of their respective deflection motions.

[0109] In the above embodiment, by controlling the forces acting on the first driving member 41 and the second driving member 42, the bearing parts 212 on the two carriers 2 can be made to perform reciprocating deflection motion synchronously or asynchronously, so that the transmission path of the light passing through the optical elements 5 carried by the two carriers 2 can have more variations.

[0110] In some possible implementations of the present application, refer to Fig.12 and Fig.13 , Fig.12 An explosion five of the deflection structure provided by the present application is shown; Fig.13 A schematic diagram showing a carrier of the deflection structure provided by the present application Figure 1 .like Fig.12As shown, the bracket driving member 3 can be set to include a third driving member 31 and a fourth driving member 32, and the third driving member 31 and the fourth driving member 32 are arranged on the bracket 1 at an angle, and the carrier driving member 4 is set to include two groups of fifth driving members 43 and two groups of sixth driving members 44; wherein, in the thickness direction B along the bracket 1, the two groups of fifth driving members 43 are respectively located on both sides of the bracket 1, and the two groups of sixth driving members 44 are respectively located on both sides of the bracket 1; one group of fifth driving members 43 and one group of sixth driving members 44 are connected to one of the two carriers 2, and the other group of fifth driving members 43 and the other group of sixth driving members 44 are connected to the other carrier 2 of the two carriers 2; and the two groups of fifth driving members 43 are both arranged corresponding to the third driving member 31, and the two groups of sixth driving members 44 are both arranged corresponding to the fourth driving member 32.

[0111] In the embodiment of the present application, by designing the position of the fixing portion 22 on the carrier 2 and the connection portion 213 for setting the carrier driving member 4, each carrier 2 in the deflection structure can have at least two deflection axes, so that the two carriers 2 can perform deflection motion around at least two deflection axes synchronously or asynchronously at the same time. For example, each carrier 2 can be set to a structural form with two deflection axes, namely, a first deflection axis A and a second deflection axis G, wherein the first deflection axis A and the second deflection axis G intersect at an angle, and the angle between the first deflection axis A and the second deflection axis G can be 90 degrees, or can also be an angle of other degrees.

[0112] For example, Fig.13 As shown, the carrier 2 can be set as a rectangular sheet structure, a fixing portion 22 is respectively set at the four corners of the carrier 2, and a connecting portion 213 is formed between every two fixing portions 22 on the carrier 2, and the connecting portion 213 can fix the carrier driving member 4. In this way, the two diagonals of the rectangular carrier 2 can be used as the first deflection axis A and the second deflection axis G on the carrier 2.

[0113] Another example, such as Fig.12As shown, a third driving member 31 and a fourth driving member 32 as the support driving member 3 can be arranged on the support 1. The axis of the third driving member 31 can be parallel to the first deflection axis A, and the axis of the fourth driving member 32 can be parallel to the second deflection axis G; or, the axis of the third driving member 31 can also have an angle with the first deflection axis A, and the axis of the fourth driving member 32 can also have an angle with the second deflection axis G. Two third driving members 31 can be arranged, and the two third driving members 31 are arranged on two opposite sides of the rectangular support 1; two fourth driving members 32 can also be arranged, and the two fourth driving members 32 are arranged on the other opposite sides of the rectangular support 1. For example, the third driving member 31 and the fourth driving member 32 can be embedded in the support 1. Alternatively, along the thickness direction B of the bracket 1, two third driving members 31 may be respectively arranged on the two side surfaces of the bracket 1, and two fourth driving members 32 may be respectively arranged on the two side surfaces of the bracket 1, that is, along the thickness direction B of the bracket 1, the projections of the two third driving members 31 overlap, and the projections of the two fourth driving members 32 also overlap.

[0114] Another example, such as Fig.12 As shown, the carrier driving member 4 can be set to a structural form including two groups of fifth driving members 43 and two groups of sixth driving members 44. In the thickness direction B along the bracket 1, the two groups of fifth driving members 43 are respectively located on both sides of the bracket 1, one group of fifth driving members 43 is connected to one carrier 2, and the other group of fifth driving members 43 is connected to another carrier 2. For example, each group of fifth driving members 43 can be set to include two fifth driving members 43, the two fifth driving members 43 are connected to the same carrier 2, and the two fifth driving members 43 are connected to the same carrier 2 in parallel. Similarly, in the thickness direction B along the bracket 1, the two groups of sixth driving members 44 are respectively located on both sides of the bracket 1, one group of sixth driving members 44 is connected to one carrier 2, and the other group of sixth driving members 44 is connected to another carrier 2. For example, each group of sixth driving members 44 can be set to include two sixth driving members 44, the two sixth driving members 44 are connected to the same carrier 2, and the two sixth driving members 44 are connected to the same carrier 2 in parallel.

[0115] At the same time, the two groups of fifth driving members 43 located on both sides of the bracket 1 are connected to the positions on the carrier 2 corresponding to the third driving member 31 on the bracket 1, and the two groups of sixth driving members 44 located on both sides of the bracket 1 are connected to the positions on the carrier 2 corresponding to the fourth driving member 32 on the bracket 1. In this way, the third driving member 31 can simultaneously generate an acting force on the two groups of fifth driving members 43 located on both sides of the bracket 1, and the fourth driving member 32 can simultaneously generate an acting force on the two groups of sixth driving members 44 located on both sides of the bracket 1, so that the fifth driving member 43 and the sixth driving member 44 can drive the carrier 2 to perform reciprocating deflection motion around two deflection axes including the first deflection axis A and the second deflection axis G.

[0116] In the above embodiment, since the bracket driving member 3 is configured to be the third driving member 31 and the fourth driving member 32 connected to the bracket 1 at an angle, correspondingly, the carrier driving member 4 is configured to include two groups of fifth driving members 43 and two groups of sixth driving members 44, so that the two groups of fifth driving members 43 connected to the two carriers 2 can be driven to move by the third driving member 31, and the two groups of sixth driving members 44 connected to the two carriers 2 can be driven to move by the fourth driving member 32, so that by controlling the forces acting on the two groups of fifth driving members 43 and the two groups of sixth driving members 44, each carrier 2 can be made to perform reciprocating deflection motion around two deflection axes at the same time.

[0117] In some possible implementations of the present application, refer to Fig.14 , Fig.14 A schematic diagram showing a carrier of the deflection structure provided by the present application Figure 2 The carrier 2 includes a carrier body 21 , and a central position of the carrier body 21 has an avoidance through hole 211 ; the carrier portion 212 includes a stopper piece 2121 extending from an edge of the carrier body 21 , and the stopper piece 2121 extends along a thickness direction B of the carrier body 21 .

[0118] In the embodiment of the present application, the carrier body 21 of the carrier 2 can be set as an annular thin sheet structure, that is, a avoidance through hole 211 is set at the center of the carrier body 21, and the shape and size of the avoidance through hole 211 can be designed according to the shape and size of the carried optical element 5. For example, the avoidance through hole 211 is set as a through hole that is approximately rectangular.

[0119] In the embodiment of the present application, the carrying portion 212 on the carrier 2 can be configured to have a structure including a stopper 2121 extending from the edge of the carrying body 21 , wherein the stopper 2121 extends along the thickness direction B of the carrying body 21 .

[0120] For example, Fig.14As shown, a plurality of stopper pieces 2121 may be formed by extending from the edge of one side of the avoidance through hole 211 provided on the carrier body 21. For example, two stopper pieces 2121 are formed by extending from the edge of each side of the rectangular avoidance through hole 211, and the length of the stopper piece 2121 matches the thickness of the optical element 5. The optical element 5 may be located in the avoidance through hole 211, and the side wall of the optical element 5 may be bonded and fixed to the stopper piece 2121, or the side wall of the optical element 5 may be clamped to the stopper piece 2121, that is, the optical element 5 may be clamped to the stopper piece 2121, so as to fix the optical element 5 to the carrier portion 212 on the carrier 2.

[0121] In another example, a portion of the supporting body 21 surrounding the avoidance through hole 211 may be used as the supporting portion 212. Fig.14 The portion of the carrier body 21 surrounded by the dotted frame is used as the bearing ring 2122 in the carrier portion 212. In the radial direction along the avoidance through hole 211, the bearing ring 2122 is smaller than the optical element 5, and one side surface of the optical element 5 can be abutted against the bearing ring 2122, or adhesive can be applied between the bearing ring 2122 and the optical element 5 to increase the connection strength between the optical element 5 and the carrier 2.

[0122] In the above embodiment, since an avoidance through hole 211 is provided on the carrier body 21 on the carrier 2, the optical element 5 can be located in the avoidance through hole 211; and a stopper plate 2121 is formed by extending upward along the hole of the avoidance through hole 211 on the carrier body 21, and the stopper plate 2121 can be used to provide an installation point for the optical element 5, and the optical element 5 is fixedly connected to the stopper plate 2121, so as to fix the optical element 5 on the carrier portion 212 on the carrier 2.

[0123] In some possible implementations of the present application, such as Fig.14 As shown, the carrier 2 in the deflection structure provided in the present application includes a carrier body 21; the fixing portion 22 on the carrier 2 includes an elastic portion 221 and a mounting portion 222, the elastic portion 221 is extended from the edge of the carrier body 21 and has elasticity, the mounting portion 222 is connected to the elastic portion 221, and the carrier 2 is fixed on the bracket 1 through the mounting portion 222.

[0124] In the embodiment of the present application, a fixing portion 22 may be extended from the carrier body 21 on the carrier 2 , and the fixing portion 22 may be configured to have a structural form including an elastic portion 221 and a mounting portion 222 .

[0125] Exemplarily, a fixing portion 22 can be formed by extending from two opposite corners of the approximately rectangular carrier body 21. In the plane where the carrier body 21 is located, the elastic portion 221 in the fixing portion 22 is extended from the edge of the carrier body 21 to the direction away from the avoidance through hole 211 on the carrier body 21. The elastic portion 221 can be set as a thin strip structure. Such an elastic portion 221 can have good elasticity, and the elastic portion 221 can produce elastic deformation. The mounting portion 222 is set on the end of the elastic portion 221 away from the carrier body 21, that is, the mounting portion 222 is extended from the end of the elastic portion 221 away from the carrier body 21. In this way, the mounting portion 222 can be used as a structure for connecting the carrier 2 with the bracket 1, and the mounting portion 222 is fixed on the bracket 1 to fix the carrier 2 on the bracket 1.

[0126] In the above embodiment, since the mounting portion 222 is extended to form on the supporting body 21 of the carrier 2, and the mounting portion 222 is set to a structural form including an elastic portion 221 and a mounting portion 222 connected to each other, the mounting portion 222 can be used as a structure connected to the bracket 1, so that the carrier 2 can be fixed on the bracket 1 through the mounting portion 222; and the elastic portion 221 is set to have an elastic structure, the elastic portion 221 can produce elastic deformation, and the supporting body 21 can move through the elastic portion 221.

[0127] In some possible implementations of the present application, refer to Fig.15 , Fig.15 A schematic diagram showing a carrier of the deflection structure provided by the present application Figure 3 The elastic portion 221 may be configured to include a straight cantilever structure, the straight cantilever extending from the edge of the carrier body 21 , and the mounting portion 222 is connected to an end of the straight cantilever away from the carrier body 21 .

[0128] In the present application embodiment, Fig.15 As shown, the elastic portion 221 can be set to a straight cantilever structure in a straight line or a nearly straight long thin sheet shape, the straight cantilever is extended from the edge of the carrier body 21, and the straight cantilever and the carrier body 21 are located in the same plane. The mounting portion 222 can be a sheet-like structure extending from one end of the straight cantilever away from the carrier body 21.

[0129] In the above embodiment, since the elastic part 221 on the carrier 2 is set as a straight cantilever structure, not only can the carrier body 21 move through the elastic deformation of the straight cantilever, but also the elastic part 221 can be easily processed.

[0130] In some possible implementations of the present application, refer to Fig.16 , Fig.16 This application provides Fig.14The elastic portion 221 on the carrier 2 can be configured to have a structure including at least two cantilever segments 2211 connected in sequence, one of the at least two cantilever segments 2211 extending from the edge of the carrier body 21, and the two connected cantilever segments 2211 extending in different directions; the mounting portion 222 is connected to the cantilever segment 2211 of the at least two cantilever segments 2211 that is away from the carrier body 21.

[0131] In the embodiment of the present application, the elastic portion 221 on the carrier 2 can be set to a curved and extended structure, for example, the elastic portion 221 can be set to an approximately S-shaped structure. That is, the elastic portion 221 includes a structure in which at least two cantilever segments 2211 are connected in sequence, each cantilever segment 2211 extends in a different direction, and the mounting portion 222 is set at the end of a cantilever segment 2211 away from the carrier body 21.

[0132] Exemplarily, the elastic portion 221 can be set to a structural form including three cantilever segments 2211, wherein the first cantilever segment 2211 is extended from a side edge of the supporting body 21 away from the avoidance through hole 211, for example, the first cantilever segment 2211 is extended along a third direction; the second cantilever segment 2211 is extended from an end of the first cantilever segment 2211 away from the supporting body 21 along a fourth direction, and the fourth direction can be a direction parallel to and opposite to the third direction; the third cantilever segment 2211 is extended from an end of the second cantilever segment 2211 away from the supporting body 21 along the third direction, and the mounting portion 222 is set on the end of the third cantilever segment 2211 away from the supporting body 21.

[0133] In the above embodiment, since the elastic portion 221 on the carrier 2 is set to a structural form including at least two cantilever segments 2211 connected in sequence, the length of the elastic portion 221 can be increased. On the one hand, the elastic portion 221 can be enabled to produce a larger deformation; on the other hand, when the movement amplitude of the supporting body 21 is determined, the change in the elastic deformation produced by each cantilever segment 2211 in the elastic portion 221 can be reduced, and the risk of fatigue fracture of the elastic portion 221 can be reduced, thereby extending the service life of the carrier 2.

[0134] In some possible implementations of the present application, such as Fig.16 As shown, the fixing portion 22 on the carrier 2 also includes a bending section 223, and the mounting portion 222 includes a mounting plate, which is connected to the elastic portion 221 via the bending section 223, and the extension direction of the bending section 223 has an angle with the plane where the elastic portion 221 is located, so that the mounting plate and the elastic portion 221 are located in different planes.

[0135] In the embodiment of the present application, in order to ensure that there is a certain distance between the carrier body 21 on the carrier 2 and the bracket 1 , a bending section 223 may be provided in the fixing portion 22 on the carrier 2 .

[0136] Exemplarily, the mounting portion 222 in the fixing portion 22 is set to a sheet-like mounting sheet structure, and the elastic portion 221 is connected to the mounting sheet through a bending section 223. The extension direction of the bending section 223 has an angle with the plane where the elastic portion 221 is located. For example, the bending section 223 is set to extend along the thickness direction B of the carrier 2, that is, the bending section 223 is perpendicular to the elastic portion 221. The mounting sheet is set on the end of the bending section 223 away from the elastic portion 221. The mounting sheet and the elastic portion 221 can be located in different planes respectively through the bending section 223. In the thickness direction B of the carrier 2, the distance between the mounting sheet and the elastic portion 221 can be adjusted by adjusting the length of the bending section 223.

[0137] In the above embodiment, since a bending section 223 is provided between the mounting plate in the fixing portion 22 and the elastic portion 221, and the extension direction of the bending section 223 forms an angle with the elastic portion 221, the mounting plate and the elastic portion 221 can be located in different planes. Therefore, after the mounting plate is fixed on the bracket 1, the elastic portion 221 and the supporting body 21 can have a certain distance from the bracket 1, so that the supporting portion 212 on the supporting body 21 can drive the optical element 5 carried thereon to move.

[0138] In some possible implementations of the present application, the bracket driver 3 includes an electromagnetic component, and the carrier driver 4 includes a permanent magnet component; or, the bracket driver 3 includes a permanent magnet component, and the carrier driver 4 includes an electromagnetic component; or, both the bracket driver 3 and the carrier driver 4 are electromagnetic components.

[0139] In the embodiment of the present application, both the bracket driving member 3 and the carrier driving member 4 can be magnetic members, and the magnetic adsorption force or magnetic repulsion force between the magnetic members can be used as driving force to drive the carrier driving member 4 to move relative to the bracket 1, thereby driving the bearing part 212 on the carrier 2 to move.

[0140] For example, Figure 6 , Figure 7 and Figure 8 As shown, the bracket driving component 3 can adopt an electromagnetic component, such as an electromagnetic coil, and the electromagnetic coil is set in the position corresponding to the driving through hole 11 in the bracket 1; correspondingly, the carrier driving component 4 can adopt a permanent magnetic component, such as a samarium cobalt magnet, a neodymium iron boron magnet, a ferrite magnet, an aluminum nickel cobalt magnet or an iron chromium cobalt magnet, etc., to fix the permanent magnetic component to the carrier body 21 of the carrier 2.

[0141] For another example, see Fig.17 , Fig.17A cross-sectional view showing a partial structure of the deflection structure provided by the present application Figure 3 .like Fig.17 As shown, the bracket driving component 3 can also adopt a permanent magnetic component, such as a magnet, and fix the magnet in the driving through hole 11 of the bracket 1; correspondingly, the carrier driving component 4 can adopt an electromagnetic component, such as an electromagnetic coil, and fix two electromagnetic coils on the carrier body 21 on the carrier 2 respectively.

[0142] As another example, both the support driving member 3 and the carrier driving member 4 may be electromagnetic members, such as electromagnetic coils.

[0143] In the above embodiment, since at least one of the bracket driving component 3 and the carrier driving component 4 is set as an electromagnetic component and the other is set as a permanent magnet component, the magnitude and direction of the driving force exerted on the carrier 2 can be controlled by controlling the current magnitude and current direction of the electromagnetic component, thereby controlling the movement path of the optical element 5 set on the carrying portion 212.

[0144] In some possible implementations of the present application, such as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the deflection structure provided by the present application further includes at least two optical elements 5; wherein each optical element 5 is disposed on a supporting portion 212, and the two optical elements 5 are parallel.

[0145] In the embodiment of the present application, at least two optical elements 5 may be provided in the deflection structure, and the optical element 5 may be an optical lens, such as a glass lens, etc. After the light passes through the optical lens, the transmission path of the light may be deviated due to refraction.

[0146] For example, when the deflection structure has two bearing parts 212, an optical element 5 can be fixedly mounted on each bearing part 212, and two optical elements 5 can be mounted in the deflection structure. When the two bearing parts 212 are parallel to each other, the two optical elements 5 mounted in the deflection structure are also in a state of being parallel to each other.

[0147] In the above embodiment, since at least two optical elements 5 are arranged in the deflection structure, in the process of transmitting the light through the optical elements 5, under the action of the bracket driving member 3 and the carrier driving member 4, the bearing portion 212 of the carrier 2 can drive the two optical elements 5 to generate reciprocating deflection motion around the first deflection axis A, thereby changing the incident angle between the light and the optical element 5. When the incident angle of the light is not zero, after the light is emitted from the two optical elements 5, an offset will occur between the exit position and the incident position of the light. Moreover, since at least two optical elements 5 are arranged in the deflection structure, the light can be refracted at least twice, thereby increasing the offset of the light generated during the transmission process.

[0148] In some possible implementations of the present application, refer to Fig.18 , Fig.18 A schematic diagram of the deflection of the optical element in the deflection structure provided by the present application is shown. The deflection angle of the two optical elements 5 carried by the deflection structure is determined by formula (1):

[0149]

[0150] In the formula, X represents the target deflection amount of the light 6 after passing through the two optical elements 5, E represents the thickness of one optical element 5, γ1 represents the deflection angle of one optical element 5, n1 represents the refractive index of one optical element 5, F represents the thickness of the other optical element 5, γ2 represents the deflection angle of the other optical element 5, and n2 represents the refractive index of the other optical element 5.

[0151] In the present application embodiment, Fig.18 As shown, in the process of driving the two optical elements 5 to move by the bearing portion 212 on the carrier 2 in the deflection structure, the two optical elements 5 can move synchronously or asynchronously. The deflection angle γ1 of one optical element 5 and the deflection angle γ2 of another optical element 5 can be consistent or inconsistent. The thickness of the two optical elements 5 can be consistent or inconsistent. Similarly, the two optical elements 5 can be made of the same material or different materials, that is, the refractive index of the two optical elements 5 can be the same or different. The specific parameters of the two optical elements 5 are not limited in the embodiments of the present application.

[0152] In the present application embodiment, Fig.18As shown, after the light 6 passes through the two optical elements 5, the transmission path of the light 6 will generate an offset due to refraction. When the deflection structure carrying the two optical elements 5 is applied to an optical device, the optical device has a target offset X requirement for the offset of the light 6. According to formula (1), after the optical element 5 is determined, the thickness and refractive index of the optical element 5 are determined, and the offset of the light 6 can be controlled by controlling the deflection angle of the two optical elements 5, so that the offset of the light 6 reaches the target offset X.

[0153] In the above embodiment, when the target offset X is large, it is necessary to make the optical element 5 produce a larger deflection angle, and the deflection structure carries two optical elements 5, so that the light 6 can be refracted twice on the transmission path. In this way, when the deflection angles of the two optical elements 5 are small, the final offset of the light 6 can also reach the target offset X, which is beneficial to reduce the movement amplitude of the optical element 5 in the deflection structure, as well as the bearing part 212 and the carrier driving member 4 that drive the optical element 5 to move, and can also reduce the vibration and noise generated by the deflection structure.

[0154] In some possible implementations of the present application, refer to Fig.19 , Fig.19 The schematic diagram of the image formed by the light passing through the deflection structure provided by the present application is shown. The bearing part 212 in the deflection structure drives the optical element 5 to reciprocate and deflect at a deflection angle according to the target frequency, so that the light beam deflected by the optical element 5 projects at least two frames of images in at least one timing cycle, and the two adjacent frames of images do not completely overlap.

[0155] In the embodiment of the present application, in the process of processing the light beam forming the picture by using the deflection structure, the speed of the reciprocating deflection of the optical element 5 will affect the quality of the picture presented by the multiple sub-frames formed by one frame of image in a time sequence period, that is, it will affect the clarity of the picture. Then the frequency of the reciprocating deflection movement of the optical element 5 needs to reach the target frequency, which can be determined according to the duration of the retained image of the visual aftereffect of the human eye. At the same time, in order to improve the clarity of the picture, the target frequency can be increased. For example, the target frequency can be set to 60Hz, or other frequencies, which are not limited in the embodiment of the present application.

[0156] In the embodiment of the present application, the target offset X of the light 6 deflected by the optical element 5 in the deflection structure can be determined according to the size of the pixel in the image. For example, the target offset X can be set to half, one third or one quarter of the width of the pixel.

[0157] In the present application embodiment, Fig.19As shown, the projection light beams of all pixel points of the frame image (the projection light beams of all pixel points together form the projection light beam) can be offset at least twice according to the target offset amount within the timing period of forming a frame image, and the offset direction of the projection light beam is different each time. In this way, after the projection light beam of a frame image is deflected at least twice, at least two frames of projected images (sub-images) of the frame image can be formed at different times. After projecting the at least two frames of sub-images, each frame of sub-images is projected to a different position, that is, the projection position of the same pixel point corresponding to each frame of sub-images does not completely overlap, but a part of the same pixel point corresponding to different frames of sub-images will be projected to the same position, so that the adjacent images in at least two frames of projected images do not completely overlap.

[0158] For example, at different moments in the timing cycle, by deflecting the optical element 5 at different deflection angles, each pixel in the frame image can be projected to different positions to form multiple sub-frame images of the frame image. During the user's viewing process, due to the reaction time of the human eye and the visual residual effect, the user will visually believe that the multiple sub-frame images are presented on the screen or curtain at the same time, so that the original pixel can be time-division multiplexed multiple times, thereby improving the clarity of the final displayed image.

[0159] Another example, such as Fig.19As shown, at the first moment in a timing cycle, the optical element 5 deflects in one direction at a first deflection angle, and the light 6 is offset, and a first image 7 can be formed at this time. At the second moment in the timing cycle, the optical element 5 deflects in another direction at a second deflection angle, and the transmission path of the light 6 is offset, and a second image 8 can be formed at this time. The pixel points in the second image 8 are offset by half relative to the pixel points in the first image 7, that is, the pixel points in the second image 8 are partially overlapped with the corresponding pixel points in the first image 7, but the second image 8 and the first image 7 are not completely overlapped. For example, when the native resolution of the display device is 960×540 and the target resolution of the displayed picture is 1920×1080, it is necessary to increase the pixel points of the image in the displayed picture to four times, that is, it is necessary to time-division multiplex one pixel point of the display device four times to form four pixel points. When playing a 1080P 60-frame video, each 1080P frame requires the display device to refresh four 540P frames, that is, the actual refresh rate of the display device is 240 frames. During the projection of these 240 frames of images on the display device, the projection beam is deflected by the deflection structure, and the four identical 540P images are projected to different positions. At this time, due to the reaction time of the human eye and the visual residual effect, the user will visually believe that these four frames of images appear on the screen at the same time, thereby achieving a viewing angle effect of improving resolution, and then improving the clarity of the displayed image.

[0160] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A deflection structure, characterized in that: include: Bracket (1); A carrier component, comprising at least two fixing parts (22) and at least two bearing parts (212), wherein the fixing parts (22) are elastic and can be deformed under the action of an external force, the carrier component is arranged on the bracket (1) via the fixing parts (22), at least one deflection axis of the bearing part (212) is formed by the at least two fixing parts (22), and the bearing part (212) is used to arrange an optical element (5); A support driving member (3) is arranged on the support (1); A carrier driving member (4) connected to the bearing portion (212) and arranged corresponding to the bracket driving member (3); Wherein, under the interaction between the support driving member (3) and the carrier driving member (4), the bearing portion (212) can perform reciprocating deflection motion relative to the support (1) around the deflection axis through the fixing portion (22), so as to drive at least two optical elements (5) arranged on the bearing portion (212) to move.

2. The deflection structure according to claim 1, characterized in that: It comprises two brackets (1) arranged in parallel; the carrier assembly comprises two carriers (2), each of the carriers (2) having a bearing portion (212), and along the thickness direction of the bracket (1), the two carriers (2) are respectively arranged on the two brackets (1).

3. The deflection structure according to claim 1, characterized in that: The carrier assembly comprises two carriers (2), each of the carriers (2) having a bearing portion (212), and the two carriers (2) are respectively located on two sides of the bracket (1) along the thickness direction of the bracket (1).

4. The deflection structure according to claim 3, characterized in that: The support (1) is provided with a driving through hole (11), and the support driving member (3) is arranged at a position in the support (1) corresponding to the driving through hole (11); the carrier driving member (4) is located in the driving through hole (11), and in the thickness direction of the support (1), the carrier driving member (4) extends outside the driving through hole (11), and the two carriers (2) are connected to the carrier driving member (4).

5. The deflection structure according to claim 4, characterized in that: The support driving member (3) is arranged in the support (1) around the driving through hole (11); in the circumferential direction along the driving through hole (11), the support driving member (3) is arranged around the carrier driving member (4).

6. The deflection structure according to claim 5, characterized in that: At least a portion of the support driving member (3) is located in the driving through hole (11), and the carrier driving member (4) is located between the support driving member (3) and the hole wall of the driving through hole (11).

7. The deflection structure according to claim 3, characterized in that: The support driving member (3) is embedded in the support (1), and the carrier driving member (4) includes a first driving member (41) and a second driving member (42); along the thickness direction of the support (1), the first driving member (41) and the second driving member (42) are respectively located on both sides of the support (1), the first driving member (41) is connected to one of the two carriers (2) and is arranged corresponding to the support driving member (3); the second driving member (42) is connected to the other of the two carriers (2) and is arranged corresponding to the support driving member (3).

8. The deflection structure according to claim 7, characterized in that: In the thickness direction of the bracket (1), the projection of the first driving member (41) is staggered with the second driving member (42), and the projection of the second driving member (42) is staggered with the first driving member (41).

9. The deflection structure according to claim 7 or 8, characterized in that: The deflection axes of the bearing parts (212) on the two carriers (2) intersect.

10. The deflection structure according to claim 7 or 8, characterized in that: Under the action of the support driving member (3) on the first driving member (41) and the second driving member (42), the bearing parts (212) on the two carriers (2) perform reciprocating deflection motion synchronously or perform reciprocating deflection motion asynchronously.

11. The deflection structure according to claim 3, characterized in that: The support driving member (3) comprises a third driving member (31) and a fourth driving member (32), wherein the third driving member (31) and the fourth driving member (32) are arranged on the support (1) at an angle, and the carrier driving member (4) comprises two groups of fifth driving members (43) and two groups of sixth driving members (44); Wherein, along the thickness direction of the bracket (1), two groups of the fifth driving members (43) are respectively located on both sides of the bracket (1), and two groups of the sixth driving members (44) are respectively located on both sides of the bracket (1); one group of the fifth driving members (43) and one group of the sixth driving members (44) are both connected to one of the two carriers (2), and another group of the fifth driving members (43) and another group of the sixth driving members (44) are both connected to the other of the two carriers (2); and the two groups of the fifth driving members (43) are both arranged corresponding to the third driving member (31), and the two groups of the sixth driving members (44) are both arranged corresponding to the fourth driving member (32).

12. The deflection structure according to any one of claims 2 to 8, characterized in that: The carrier (2) comprises a carrying body (21), the center position of the carrying body (21) has an avoidance through hole (211); the carrying portion (212) comprises a stopper sheet (2121) extending from the edge of the carrying body (21), and the stopper sheet (2121) is extended along the thickness direction of the carrying body (21).

13. The deflection structure according to any one of claims 2 to 8, characterized in that: The carrier (2) comprises a carrier body (21); the fixing portion (22) comprises an elastic portion (221) and a mounting portion (222); the elastic portion (221) is formed by extending from an edge of the carrier body (21) and has elasticity; the mounting portion (222) is connected to the elastic portion (221); and the carrier (2) is fixed to the bracket (1) via the mounting portion (222).

14. The deflection structure according to claim 13, characterized in that: The elastic portion (221) comprises a straight cantilever, which is formed by extending from the edge of the bearing body (21), and the mounting portion (222) is connected to an end of the straight cantilever away from the bearing body (21).

15. The deflection structure according to claim 13, characterized in that: The elastic portion (221) comprises at least two cantilever segments (2211) connected in sequence, one of the at least two cantilever segments (2211) being formed by extending from the edge of the bearing body (21), and the two connected cantilever segments (2211) extending in different directions; the mounting portion (222) is connected to the cantilever segment (2211) of the at least two cantilever segments (2211) that is away from the bearing body (21).

16. The deflection structure according to claim 14 or 15, characterized in that: The fixing portion (22) further comprises a bent section (223), the mounting portion (222) comprises a mounting sheet, the mounting sheet is connected to the elastic portion (221) via the bent section (223), and an extending direction of the bent section (223) forms an angle with a plane where the elastic portion (221) is located, so that the mounting sheet and the elastic portion (221) are located in different planes.

17. The deflection structure according to any one of claims 1 to 8, characterized in that: The support driving component (3) comprises an electromagnetic component, and the carrier driving component (4) comprises a permanent magnetic component; Alternatively, the support driving component (3) includes a permanent magnet component, and the carrier driving component (4) includes an electromagnetic component; Alternatively, the support driving component (3) and the carrier driving component (4) are both electromagnetic components.

18. The deflection structure according to any one of claims 1 to 8, characterized in that: It also comprises at least two optical elements (5); wherein each of the optical elements (5) is arranged on one of the supporting parts (212), and the two optical elements (5) are parallel to each other.

19. The deflection structure according to claim 18, characterized in that The deflection angle of the two optical elements (5) is determined by: In the formula, X represents the target deflection amount of the light after passing through the two optical elements (5), E represents the thickness of one optical element (5), γ1 represents the deflection angle of the one optical element (5), n1 represents the refractive index of the one optical element (5), F represents the thickness of the other optical element (5), γ2 represents the deflection angle of the other optical element (5), and n2 represents the refractive index of the other optical element (5).

20. The deflection structure according to claim 18, characterized in that The bearing portion (212) drives the optical element (5) to perform reciprocating deflection motion at a deflection angle according to a target frequency, so that the deflected light beam passing through the optical element (5) projects at least two frames of images within at least one timing cycle, and two adjacent frames of images do not completely overlap.

21. A projection device, characterized in that: include: Optical mechanical components; Lens assembly; Optical element (5); The deflection structure described in any one of claims 1 to 20, wherein the optical element is fixed on the bearing portion (212), and the deflection structure is arranged between the optical-mechanical assembly and the lens assembly.

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