Damping glue fixing structure and optical equipment

Abstract

The invention provides a damping glue fixing structure and optical equipment, the damping glue fixing structure is used for optical camera equipment, the damping glue fixing structure comprises a first damping seat arranged on one side, facing a rear cover, of a prism carrier and a second damping seat arranged on one side, facing the prism carrier, of the rear cover, the first damping seat is provided with a first damping groove, and the second damping seat is provided with a second damping groove. The first damping groove and the second damping groove form a damping cavity, a damping structure is arranged in the first damping groove and / or the second damping groove, and a colloid containing space is formed between the damping structure and the damping cavity. The damping seats are arranged on the prism carrier and the rear cover, the damping grooves are defined by the damping seats, the damping cavity for containing the colloid is formed by the two damping grooves, and the damping structure is arranged in the damping cavity so that the grabbing and attaching area and the adhesive area of the damping colloid can be increased, and the adhesiveness and friction force of the damping colloid can be enhanced; the risk that glue is thrown out during reliability is reduced, and the stability and reliability of the prism carrier in the movement process are guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of optical devices, and more specifically, to a damping adhesive fixing structure, and also to an optical device including the damping adhesive fixing structure. Background Art

[0002] Optical camera equipment is widely used in fields such as mobile phones, security, low-altitude flight, aerospace, etc.

[0003] In optical imaging equipment, the lens will generate inertia and vibrate when it moves. Therefore, effectively alleviating vibration can improve the quality of optical imaging. Summary of the invention

[0004] The present application provides a damping glue fixing structure, which can improve the connection strength of the damping glue, buffer the vibration generated during the movement of the optical lens, improve the reliability, stability and strength of the damping glue, reduce the inertia and vibration during the movement of the lens, and improve the stability and reliability of the optical camera equipment.

[0005] In a first aspect, the damping glue fixing structure provided in the present application is used for an optical camera device, comprising a first damping seat arranged on a side of a prism carrier facing a rear cover, and a second damping seat arranged on a side of the rear cover facing the prism carrier, wherein the first damping seat encloses a first damping groove, and the second damping seat encloses a second damping groove, and the first damping groove and the second damping groove form a damping cavity, a damping structure is arranged in the first damping groove and / or the second damping groove, and a colloid containing space for containing a damping colloid is arranged between the damping structure and the damping cavity.

[0006] In some embodiments, the first damping groove is recessed along the thickness direction of the first damping seat;

[0007] The first damping groove includes a first wall surface facing the back cover, a second wall surface and a third wall surface arranged on both sides of the first wall surface along a first direction, and a fourth wall surface connecting the first wall surface, the second wall surface and the third wall surface, the fourth wall surface is arranged on a side close to the camera motor base, the first wall surface, the second wall surface, the third wall surface and the fourth wall surface surround the first damping groove, and the first direction is perpendicular to the thickness direction of the first damping seat.

[0008] In some embodiments, the second damping groove is recessed along a thickness direction of the second damping seat;

[0009] The second damping groove includes a fifth wall surface facing the prism carrier, a sixth wall surface and a seventh wall surface arranged on both sides of the fifth wall surface along the first direction, and an eighth wall surface connecting the fifth wall surface, the sixth wall surface and the seventh wall surface, the eighth wall surface is arranged on a side close to the camera motor base, and the fifth wall surface, the sixth wall surface, the seventh wall surface and the eighth wall surface form the second damping groove; the first direction is perpendicular to the thickness direction of the second damping seat.

[0010] In some embodiments, the damping structure includes a first damping portion and a second damping portion, the first damping portion is arranged on the first wall surface, and the second damping portion is arranged on the fifth wall surface, the first damping portion protrudes from the first wall surface in a direction close to the back cover, and the second damping portion protrudes from the fifth wall surface in a direction close to the prism carrier, and a movement gap is arranged between the first damping portion and the second damping portion along the thickness direction of the damping cavity, and the movement gap is used to provide space for relative movement between the prism carrier and the back cover.

[0011] In some embodiments, the first damping portion includes a plurality of first damping sub-portions, which are spaced apart and distributed on the first wall surface along the first direction; the second damping portion includes a plurality of second damping sub-portions, which are spaced apart and distributed on the fifth wall surface along the first direction.

[0012] In some embodiments, along the first direction, a plurality of the first damping sub-sections and a plurality of the second damping sub-sections are arranged alternately; or,

[0013] Along the second direction, the first damping sub-portion and the second damping sub-portion are arranged in a one-to-one correspondence, and a projection of the second damping sub-portion in the second direction at least partially overlaps with a projection of the first damping sub-portion in the second direction.

[0014] In some embodiments, along the first direction, a length of the first damping groove is greater than a length of the second damping groove.

[0015] In some embodiments, there are two first damping seats and two second damping seats, wherein the two first damping seats are arranged along the first direction and symmetrically distributed with respect to the central longitudinal section of the prism carrier, and the two second damping seats are arranged along the first direction and symmetrically distributed with respect to the central longitudinal section of the back cover; or, there are multiple first damping seats and multiple second damping seats, wherein the multiple first damping seats are arranged along the first direction and the second direction, and the multiple second damping seats are arranged along the first direction and the second direction.

[0016] In some embodiments, the first damping portion further includes a plurality of third damping sub-portions, which are distributed on the second wall and the third wall along the thickness direction; the second damping portion includes a plurality of fourth damping sub-portions, which are distributed on the sixth wall and the seventh wall at intervals along the first direction.

[0017] In a second aspect, an embodiment of the present application further provides an optical device, comprising a prism carrier and a back cover, and also comprising a damping glue fixing structure arranged between the prism carrier and the back cover, wherein the damping glue fixing structure is the damping glue fixing structure of the above-mentioned embodiment.

[0018] In the embodiment of the present application, the prism carrier and the back cover are respectively provided with damping seats, the damping seats are enclosed to form a damping groove, and the two damping grooves form a damping cavity to accommodate the colloid. The damping cavity is provided with a damping structure. By providing the damping structure in the damping cavity, the gripping area and the adhesive area of ​​the damping colloid are increased, the adhesion and friction of the damping glue are enhanced, the risk of glue being thrown out during reliability is reduced, and the stability and reliability of the prism carrier during movement are ensured. The present application optimizes the damping glue groove to enhance the adhesion and friction of the damping colloid, reduce the fluidity of the glue, improve the overall performance of the optical device, and extend the service life of the optical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0020] Figure 1 A structural schematic diagram of a damping glue fixing structure provided in an embodiment of the present application from one perspective;

[0021] Figure 2 A structural schematic diagram of a damping glue fixing structure provided in an embodiment of the present application from another perspective;

[0022] Figure 3 A schematic diagram of the structure of the damping glue fixing structure and the damping colloid provided in the embodiment of the present application;

[0023] Figure 4 A top view of the damping glue fixing structure provided in an embodiment of the present application.

[0024] The reference numerals are as follows:

[0025] 1-back cover; 2-prism carrier; 3-damping cavity; 4-damping structure; 5-damping colloid;

[0026] 11-second damping seat; 21-first damping seat; 41-first damping part; 42-second damping part; 111-second damping groove; 211-first damping groove;

[0027] X-first direction; Y-second direction; Z-thickness direction; a-motion gap. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0030] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0031] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it 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, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0033] The term “plurality” used in this application refers to two or more (including two).

[0034] The specific implementation methods of the present application are described below in conjunction with the accompanying drawings.

[0035] like Figure 1 and Figure 2 As shown, Figure 1 A structural schematic diagram of a damping glue fixing structure provided in an embodiment of the present application from one perspective; Figure 2 A structural schematic diagram of the damping glue fixing structure provided in an embodiment of the present application from another perspective.

[0036] The damping glue fixing structure provided in the present application mainly includes a first damping seat 21 arranged on the prism carrier 2, and a second damping seat 11 arranged on the back cover 1. The first damping seat 21 encloses a first damping groove 211, and the second damping seat 11 encloses a second damping groove 111. The first damping groove 211 and the second damping groove 111 form a damping cavity 3. A damping structure 4 is provided inside the first damping groove 211 and / or the second damping groove 111, and a colloid containing space is provided between the damping structure 4 and the damping cavity 3, and the colloid containing space is used to contain a damping colloid 5.

[0037] Optionally, the first damping seat 21 is disposed on the side of the prism carrier 2 facing the rear cover 1, and the second damping seat 11 is disposed on the side of the rear cover 1 facing the prism carrier 2. Figure 1 As shown, the first damping seat 21 is arranged on the front side of the prism carrier 2, and the second damping seat 11 is arranged on the rear side of the rear cover 1. After the rear cover 1 and the prism carrier 2 are assembled, the first damping seat 21 and the second damping seat 11 are arranged opposite to each other.

[0038] The first damping seat 21 encloses a first damping groove 211, which can be arranged on the front side of the first damping seat 21, and its notch is arranged at least toward one side of the rear cover 1. The second damping seat 11 encloses a second damping groove 111, which can be arranged on the rear side of the rear cover 1, and the notch of the second damping groove 111 is arranged at least toward one side of the prism carrier 2. When the first damping seat 21 is matched with the second damping seat 11, the first damping groove 211 is matched with the first damping groove 211 to form a damping cavity 3, and the damping cavity 3 can be connected to the outside, for example, connected to the outside through the cavity opening, so as to inject damping glue into the damping cavity 3.

[0039] The damping structure 4 is arranged in the damping cavity 3, specifically, it can be arranged in the first damping groove 211 and / or the second damping groove 111. The damping structure 4 can be a damping surface with a certain roughness, for example, a damping surface formed by a plurality of tiny damping grooves, or a damping surface formed by a plurality of tiny damping protrusions. The damping structure 4 is arranged on one side, both sides or multiple sides of the damping cavity 3 to increase the friction with the damping colloid 5. A colloid containing space is formed between the damping structure 4 and the damping cavity 3, which can be used for the colloid to enter and form contact with the damping structure 4 and the damping cavity 3, thereby increasing the adhesion area and friction.

[0040] When in use, first, fix the prism carrier 2 and the spring sheet into the base; then, place the ball into the arc groove of the back cover 1 and combine it with the base, the ball presses the prism carrier 2, and the spring sheet deforms to form a pre-pressure to ensure the tightness between the ball and the prism carrier 2. Thirdly, after installing the back cover 1 and the prism carrier 2, fill and fix the damping glue with the help of the damping structure 4.

[0041] The working process starts with component assembly, including fixing the prism carrier 2 and the spring in the base, and then placing the ball into the arc groove of the back cover 1 and finally combining it with the base; then, the two damping rubber grooves fit tightly, and when the device performs OIS movement, the movement of the ball in its arc groove and the damping rubber groove drives the prism carrier 2 to move smoothly. At the same time, the damping rubber can absorb and disperse the inertia and vibration energy from the prism carrier 2 well, reduce impact, and maintain imaging clarity and stability.

[0042] The working principle of the present application is that, through a reasonably designed damping rubber groove structure, the pulling force applied to the ball can be evenly distributed in the damping rubber groove, thereby achieving a stable support and shock absorption effect for the prism carrier 2. The setting of the damping structure 4 in the damping groove can effectively increase the friction force and the adhesive area, improve the connection strength, enhance the stability of the damping colloid 5 during movement, and improve the reliability of the device.

[0043] The present application optimizes the fixing method of the damping glue, uses a reasonable damping glue groove, and utilizes the damping structure 4 to enhance the adhesion and friction of the damping glue, reduce the fluidity of the glue, and improve the connection strength between the damping glue and the damping groove. The stability and reliability of the connection of the damping glue during movement are ensured, and the vibration generated by the optical camera equipment during the OIS movement process can be reduced to slow down the vibration and inertia of the lens during movement, thereby improving the performance and durability of the overall optical camera equipment.

[0044] In a specific embodiment, the first damping groove 211 is recessed along the thickness direction Z of the first damping seat 21. The first damping groove 211 includes a first wall, a second wall, a third wall and a fourth wall, the first wall is arranged toward the rear cover 1, the second wall and the third wall are arranged on both sides of the first wall along the first direction X, and the fourth wall connects the first wall, the second wall and the third wall. The fourth wall is arranged on a side close to the camera motor base, and the first wall, the second wall, the third wall and the fourth wall form the first damping groove 211. The first direction X is perpendicular to the thickness direction Z of the first damping seat 21.

[0045] The first wall surface can be arranged perpendicular to the second wall surface and the third wall surface, and the second wall surface and the third wall surface can be parallel to each other to form a rectangular cross-sectional structure, or can be distributed at an acute angle or an obtuse angle to form a trapezoidal structure, and a wall surface can be arranged on the upper side of the first wall surface, and the wall surface is provided with a glue injection port to facilitate the injection of colloid into the damping groove, so as to form a semi-enclosed groove structure with openings on the top and front side and closed sides and bottom.

[0046] Optionally, the first damping groove 211 and the prism carrier 2 are plastic injection molded, and the first damping groove 211 can accommodate the damping glue on the front side and provide support for the damping glue.

[0047] Further, the second damping groove 111 is recessed along the thickness direction Z of the second damping seat 11. The second damping groove 111 includes a fifth wall, a sixth wall, a seventh wall and an eighth wall, wherein the fifth wall is arranged facing the prism carrier 2, the sixth wall and the seventh wall are arranged on both sides of the fifth wall along the first direction X, the eighth wall connects the fifth wall, the sixth wall and the seventh wall, the eighth wall is arranged on the side close to the camera motor base, and the fifth wall, the sixth wall, the seventh wall and the eighth wall form the second damping groove 111. Among them, the first direction X is perpendicular to the thickness direction Z of the second damping seat 11. In this way, a semi-enclosed groove structure with openings on the top and the front side and closed sides and the bottom is formed, the second damping groove 111 and the rear cover 1 are plastic injection molded, and the second damping groove 111 is used to accommodate and support the damping glue on the side of the rear cover 1.

[0048] The second damping groove 111 cooperates with the first damping groove 211 to form a complete glue groove. When applying damping glue, due to the good fluidity of damping glue, this structure can ensure sufficient glue storage and prevent disorderly flow; the glue is easy to be thrown out during reliability, and through the damping structure 4 in the damping groove, the glue can grab the plastic part to increase the friction and adhesive area.

[0049] The fifth wall surface can be arranged perpendicularly to the sixth wall surface and the seventh wall surface. The sixth wall surface and the seventh wall surface can be parallel to each other to form a rectangular cross-sectional structure, or they can be distributed at an acute angle or an obtuse angle to form a trapezoidal structure. A wall surface can also be arranged on the upper side of the fifth wall surface, and the wall surface is provided with a glue injection port to facilitate the injection of colloid into the damping groove.

[0050] refer to Figure 3 , Figure 3 This is a schematic diagram of the structure of the damping glue fixing structure and the damping colloid provided in an embodiment of the present application.

[0051] In a specific embodiment, the damping structure 4 includes a first damping portion 41 and a second damping portion 42. The first damping portion 41 is provided on the first wall surface, and the second damping portion 42 is provided on the fifth wall surface. The first damping portion 41 protrudes from the first wall surface in a direction close to the back cover 1, and the second damping portion 42 protrudes from the fifth wall surface in a direction close to the prism carrier 2. Along the thickness direction Z direction of the damping cavity 3, a movement gap a is provided between the first damping portion 41 and the second damping portion 42. The movement gap a is used to prevent the prism carrier 2 from interfering with the back cover 1 during movement, thereby providing space for the relative movement between the prism carrier 2 and the back cover 1. In addition, the micro gap between the prism carrier 2 and the back cover 1 enables the damping glue to adapt to the deformation caused by the ball movement, thereby improving the flexibility of the damping glue.

[0052] Specifically, the first damping part 41 includes a plurality of first damping sub-parts, and the plurality of first damping sub-parts are spaced apart on the first wall surface along the first direction X. The second damping part 42 includes a plurality of second damping sub-parts, and the plurality of second damping sub-parts are spaced apart on the fifth wall surface along the first direction X. The second damping part 42 includes a plurality of second damping sub-parts, and the plurality of second damping sub-parts are spaced apart on the fifth wall surface along the first direction X.

[0053] Optionally, the first damping sub-section and the second damping sub-section can both be in the shape of elongated strips, such as a triangular cross-section, a rectangular cross-section, a trapezoidal cross-section, a semicircular cross-section, etc. The damping sub-section adopts an elongated strip structure, which can enhance the friction and adhesion between the colloid and the damping sub-section, prevent the glue from flowing or falling off with the movement of the ball, improve the fixing effect of the damping glue, and ensure that it will not loosen or fall off due to the fluidity of the glue during the use of the optical device, thereby improving the reliability of the equipment and the overall optical performance.

[0054] The plurality of first damping sub-units may be arranged at equal intervals, or at non-equal intervals, or may be distributed in staggered directions. Similarly, the plurality of second damping sub-units may be arranged at equal intervals, or at non-equal intervals, or may be distributed in staggered directions.

[0055] In a preferred embodiment, along the first direction X, a plurality of first damping sub-sections and a plurality of second damping sub-sections are arranged alternately to form a zigzag arrangement structure. Alternatively, along the second direction Y, the first damping sub-sections and the second damping sub-sections are arranged one-to-one, and the projection of the second damping sub-section in the second direction Y at least partially overlaps with the projection of the first damping sub-section in the second direction Y.

[0056] In this way, after the first damping glue groove and the second damping glue groove cooperate to form a complete damping glue groove, the solidified damping glue can grasp the raised first damping sub-parts and the second damping sub-parts, thereby increasing the friction and the adhesive area to prevent the glue from being thrown out during movement.

[0057] refer to Figure 4 , Figure 4 A top view of the damping glue fixing structure provided in an embodiment of the present application.

[0058] Optionally, along the first direction X, the length of the first damping groove 211 is greater than the length of the second damping groove 111, so as to ensure that the shape of the glue after dispensing is trapezoidal, and when the damping glue is pulled and deformed, there is sufficient strength and movement space, and the flow law of the glue is met during filling, to prevent the glue from being fully filled and causing gaps, thereby improving the filling rate of the glue.

[0059] In a preferred embodiment, there are two first damping seats 21 and two second damping seats 11, wherein the two first damping seats 21 are arranged along the first direction X and are symmetrically distributed with respect to the central longitudinal section of the prism carrier 2, and the two second damping seats 11 are arranged along the first direction X and are symmetrically distributed with respect to the central longitudinal section of the back cover 1. In this way, a structure is formed in which the damping grooves are distributed on both sides above the ball and are symmetrically arranged with the ball as the center, which can ensure the consistency of the pulling force of the prism carrier 2 on the left and right when it moves, thereby ensuring the stability of the movement of the prism carrier 2.

[0060] Furthermore, the first damping portion 41 also includes a plurality of third damping sub-portions, which are distributed on the second wall and the third wall along the thickness direction Z, and the second damping portion 42 includes a plurality of fourth damping sub-portions, which are distributed on the sixth wall and the seventh wall at intervals along the first direction X.

[0061] The damping glue in the damping groove can adhere to the three walls of the damping groove, so that the glue can grasp the plastic damping structure 4 to increase the friction and adhesive area, increase the adhesion, and improve the connection strength between the damping glue and the damping groove.

[0062] Furthermore, a damping structure 4 can be set on the fourth wall and the eighth wall so that the damping rubber and each wall of the damping groove form a gripping structure, ensuring that the damping rubber can be evenly stressed and maintain a stable shape when the equipment moves, thereby further improving the connection strength between the damping rubber and the damping groove.

[0063] In addition, there can be multiple first damping seats 21 and second damping seats 11 respectively, wherein multiple first damping seats 21 are arranged along the first direction X and the second direction Y, and two second damping seats 11 are arranged along the first direction X and the second direction Y, that is, the damping seats are arranged along the first and second directions Y on the connecting surface between the back cover 1 and the prism carrier 2, thereby forming multiple damping connection structures, which can improve the damping efficiency and damping shock absorption effect.

[0064] In addition, the present application also provides an optical device, including a prism carrier, a back cover and a damping glue fixing structure, wherein the damping glue fixing structure is arranged between the prism carrier and the back cover, and the damping glue fixing structure is referred to above.

[0065] The damping glue fixing structure and optical device provided by the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the present application.

Claims

1. A damping glue fixing structure for optical camera equipment, characterized in that: The invention comprises a first damping seat (21) arranged on a side of a prism carrier (2) facing a rear cover (1), and a second damping seat (11) arranged on a side of the rear cover (1) facing the prism carrier (2), wherein the first damping seat (21) encloses a first damping groove (211), and the second damping seat (11) encloses a second damping groove (111), and the first damping groove (211) and the second damping groove (111) form a damping cavity (3), a damping structure (4) is arranged in the first damping groove (211) and / or the second damping groove (111), and a colloid accommodating space for accommodating a damping colloid (5) is arranged between the damping structure (4) and the damping cavity (3).

2. The damping glue fixing structure according to claim 1, characterized in that: The first damping groove (211) is recessed along the thickness direction of the first damping seat (21); The first damping groove (211) comprises a first wall surface arranged facing the rear cover (1), a second wall surface and a third wall surface arranged on both sides of the first wall surface along a first direction, and a fourth wall surface connecting the first wall surface, the second wall surface and the third wall surface, wherein the fourth wall surface is arranged on a side close to the camera motor base, and the first wall surface, the second wall surface, the third wall surface and the fourth wall surface enclose the first damping groove (211), and the first direction is perpendicular to the thickness direction of the first damping seat (21).

3. The damping glue fixing structure according to claim 2, characterized in that: The second damping groove (111) is recessed along the thickness direction of the second damping seat (11); The second damping groove (111) comprises a fifth wall surface arranged facing the prism carrier (2), a sixth wall surface and a seventh wall surface arranged on both sides of the fifth wall surface along the first direction, and an eighth wall surface connecting the fifth wall surface, the sixth wall surface and the seventh wall surface, wherein the eighth wall surface is arranged on a side close to the camera motor base, and the fifth wall surface, the sixth wall surface, the seventh wall surface and the eighth wall surface enclose the second damping groove (111); the first direction is perpendicular to the thickness direction of the second damping seat (11).

4. The damping glue fixing structure according to claim 3, characterized in that: The damping structure (4) comprises a first damping portion (41) and a second damping portion (42); the first damping portion (41) is arranged on the first wall surface, and the second damping portion (42) is arranged on the fifth wall surface; along the thickness direction of the damping cavity (3), a movement gap is arranged between the first damping portion (41) and the second damping portion (42); the movement gap is used to provide space for relative movement between the prism carrier (2) and the back cover (1).

5. The damping glue fixing structure according to claim 4, characterized in that: The first damping portion (41) comprises a plurality of first damping sub-portions, and the plurality of first damping sub-portions are distributed on the first wall surface at intervals along the first direction; The second damping portion (42) comprises a plurality of second damping sub-portions, and the plurality of second damping sub-portions are distributed on the fifth wall surface at intervals along the first direction.

6. The damping glue fixing structure according to claim 5, characterized in that: Along the first direction, multiple first damping sub-sections and multiple second damping sub-sections are arranged alternately; or, along the second direction, the first damping sub-sections and the second damping sub-sections are arranged one-to-one, and the projection of the second damping sub-section in the second direction at least partially overlaps with the projection of the first damping sub-section in the second direction.

7. The damping glue fixing structure according to claim 1, characterized in that: Along the first direction, the length of the first damping groove (211) is greater than the length of the second damping groove (111).

8. The damping glue fixing structure according to any one of claims 1 to 7, characterized in that: There are two of each of the first damping seat (21) and the second damping seat (11), wherein the two first damping seats (21) are arranged along the first direction and are symmetrically distributed with respect to the central longitudinal section of the prism carrier (2), and the two second damping seats (11) are arranged along the first direction and are symmetrically distributed with respect to the central longitudinal section of the back cover (1); or, There are a plurality of the first damping seats (21) and a plurality of the second damping seats (11), wherein the plurality of the first damping seats (21) are arranged along the first direction and the second direction, and the plurality of the second damping seats (11) are arranged along the first direction and the second direction.

9. The damping glue fixing structure according to claim 5, characterized in that: The first damping portion (41) further comprises a plurality of third damping sub-portions, wherein the plurality of third damping sub-portions are distributed on the second wall surface and the third wall surface along the thickness direction; The second damping portion (42) comprises a plurality of fourth damping sub-portions, and the plurality of second damping sub-portions are distributed at intervals on the sixth wall surface and the seventh wall surface along the first direction.

10. An optical device, comprising a prism carrier (2) and a back cover (1), characterized in that: It also comprises a damping glue fixing structure arranged between the prism carrier (2) and the back cover (1), wherein the damping glue fixing structure is the damping glue fixing structure according to any one of claims 1 to 9 above.

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