Gluing assembly

Abstract

The utility model provides a gluing assembly which comprises a taking tool used for taking an optical element. The taking tool comprises a suction structure and a plurality of limiting structures. The suction structure comprises a suction surface which is in contact with a first area at the top of the optical element and exposes a second area at the top of the optical element; the multiple limiting structures are dispersedly arranged on the side portion of the suction structure and used for covering the first part of the side wall of the optical element. The limiting structure can expose part of the side wall of the optical element and the second area, adjacent to the part of the side wall, of the top of the optical element, so that the optical element can be glued conveniently, and the bonding quality of the optical element can be improved.

Description

Technical Field

[0001] This disclosure relates to the field of optical component assembly, and more particularly to an adhesive coating assembly. Background Technology

[0002] As lidar technology develops towards miniaturization and integration, the size requirements for lidar are constantly shrinking, and optical components, including filters, lenses, and mirrors, also need to be minimized in size.

[0003] However, small-sized optical components present challenges in terms of handling, positioning, and securing, with securing being the most prominent issue. Furthermore, for filters, since lidar operates in the infrared band, filters block light from other wavelengths, including ultraviolet light, which is precisely the condition required for the curing of many adhesives. In addition, to control the size of the optical components, the area available for adhesive bonding is very small, and adhesive spillage into the working area of ​​the optical components must be prevented. Lidar also needs to maintain extremely high reliability under complex operating conditions, such as ensuring the bonding strength of optical components in high-temperature and high-humidity environments. These factors pose significant challenges to the bonding of optical components.

[0004] Existing bonding methods involve applying adhesive to a substrate, placing the optical element (e.g., a filter) on the adhesive, and then curing the adhesive. However, in applications with small-sized optical elements, this method easily leads to adhesive overflowing from the bottom into the working area of ​​the optical element. Furthermore, since the curing beam needs to pass through the optical element, and some optical elements (e.g., filters) filter the beam used for curing, this significantly reduces the curing effect of the adhesive, resulting in decreased bond strength. Currently, there is a lack of adhesive application tools suitable for small-sized optical elements in LiDAR applications. Utility Model Content

[0005] This disclosure provides an adhesive coating assembly for reducing the bonding difficulty of small-volume optical components and improving bonding quality and efficiency.

[0006] To address the aforementioned problems, this disclosure provides an adhesive application assembly, comprising: a picking tool for picking up an optical element, the picking tool including: a suction structure including a suction surface for contacting a first region on the top of the optical element and exposing a second region on the top of the optical element; and a plurality of limiting structures dispersedly disposed on the side of the suction structure, the limiting structures being used to cover a first portion of the sidewall of the optical element.

[0007] Optionally, the adhesive application assembly further includes an adhesive application tool, including an adhesive dispensing portion, the end of which has a cut for contacting a second portion of the exposed optical element sidewall of the limiting structure and a second region on the top of the optical element.

[0008] Optionally, the adhesive dispensing portion extends axially, and the radial dimension of the cut is less than or equal to the width of the second region at the top of the optical element.

[0009] Optionally, in the extending direction of the adhesive dispensing portion, the size of the cut is less than or equal to the thickness of the sidewall of the optical element.

[0010] Optionally, the dispensing portion extends axially, and its radial dimension gradually increases in the dispensing direction.

[0011] Optionally, the adhesive application tool further includes: an adhesive storage section connected to the adhesive dispensing section; and a power unit connected to the adhesive storage section for squeezing the adhesive in the adhesive storage section so that the adhesive can be discharged from the adhesive dispensing section.

[0012] Optionally, the absorption structure is matched to the shape of the optical element.

[0013] Optionally, the suction structure further includes an air passage communicating with the suction surface, used to enable the picking tool to provide suction to the optical element.

[0014] Optionally, the grasping tool further includes a gripping part located on the suction structure, the gripping part including an air intake channel, one end of the air intake channel communicating with the airway, and the other end of the air intake channel being connected to an external negative pressure generator.

[0015] Optionally, the first region includes a central region on the top of the optical element, the second region includes an edge region on the top of the optical element, and the second region is adjacent to the second portion.

[0016] Optionally, the limiting structure protrudes from the suction surface.

[0017] Optionally, the distance from the bottom of the limiting structure to the absorption surface is less than or equal to the thickness of the optical element.

[0018] Compared with the prior art, the technical solution disclosed herein has the following advantages:

[0019] When the adhesive application assembly provided in this disclosure is in operation, the suction surface of the suction structure in the pick-up tool contacts a first region on the top of the optical element, exposing a second region on the top of the optical element. Multiple limiting structures are distributed on the side of the suction structure, each limiting structure covering a first portion of the sidewall of the optical element, with corresponding limiting structures exposing portions of the sidewall. Therefore, the pick-up tool of the adhesive application assembly can expose portions of the sidewall of the optical element, as well as the second region on the top of the optical element adjacent to these portions, preparing for adhesive application to the optical element and improving the bonding quality of the optical element.

[0020] In an optional embodiment, the adhesive application assembly further includes an adhesive application tool, comprising an adhesive dispensing portion, the end of which has a slit. The slit is used to contact a second region of the exposed sidewall of the optical element portion and the adjacent top region of the optical element, and to apply adhesive. When the adhesive application assembly provided in this disclosure is in operation, the slit on the adhesive dispensing portion of the adhesive application tool contacts the exposed sidewall of the optical element portion and the adjacent top region of the optical element, and applies adhesive, which helps to improve the bonding quality of the optical element. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be introduced below. The drawings described below are merely embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort. The drawings are used to provide a further understanding of this disclosure and constitute a part of the specification. They are used together with the embodiments of this disclosure to explain this disclosure and do not constitute a limitation of this disclosure.

[0022] Figure 1 A schematic diagram of the structure of an exemplary picking tool consistent with some embodiments of this disclosure is shown.

[0023] Figure 2 A schematic diagram of an exemplary pick-up tool for picking up optical elements, consistent with some embodiments of this disclosure, is shown.

[0024] Figure 3 A schematic diagram of the structure of an exemplary optical element consistent with some embodiments of this disclosure is shown.

[0025] Figure 4 A partial schematic diagram of the limiting structure is shown when an exemplary pick-up tool, consistent with some embodiments of the present disclosure, picks up an optical element.

[0026] Figure 5 A schematic structural view of an exemplary adhesive applicator consistent with some embodiments of this disclosure is shown.

[0027] Figure 6 A structural schematic diagram of an exemplary adhesive applicator consistent with some embodiments of this disclosure is shown from another perspective.

[0028] Figure 7 A schematic diagram of an exemplary pick-up tool for placing optical elements onto a base plate is shown, consistent with some embodiments of this disclosure.

[0029] Figure 8 A schematic diagram of an exemplary coating tool for applying adhesive to an optical element, consistent with some embodiments of this disclosure, is shown. Detailed Implementation

[0030] In the following description, only certain exemplary embodiments are shown. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this disclosure. Therefore, the drawings and description are to be considered exemplary in nature and not restrictive.

[0031] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or connections that allow for communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0033] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The following disclosure provides numerous different embodiments or examples for implementing various structures of this disclosure. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this disclosure. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this disclosure, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0035] As is known from the background art, a current method for bonding optical components involves first applying adhesive to a substrate, then placing the optical component on the adhesive, and subsequently curing the adhesive. However, in applications involving small-volume optical components, this method can easily cause adhesive to overflow from the bottom into the working area of ​​the optical component.

[0036] The adhesive application assembly provided in this disclosure allows the tool to directly pick up the optical element during operation, exposing a second region on the top of the optical element and part of its sidewall. The exposed portion of the optical element facilitates subsequent adhesive application without causing adhesive to overflow into the working area, thus improving bonding efficiency and quality.

[0037] Figure 1 A schematic diagram of the structure of an exemplary picking tool consistent with some embodiments of this disclosure is shown. Figure 2 A schematic diagram of an exemplary pick-up tool for picking up optical elements, consistent with some embodiments of this disclosure, is shown. Figure 3 A schematic diagram of the structure of an exemplary optical element consistent with some embodiments of this disclosure is shown.

[0038] refer to Figures 1 to 3This disclosure provides an adhesive application assembly. The adhesive application assembly includes a pick-up tool 100 for picking up an optical element 200. The pick-up tool 100 includes a suction structure 101 and a plurality of limiting structures 105.

[0039] The suction structure 101 includes a suction surface 102. The suction surface 102 is used to contact a first region 103 on the top of the optical element 200 (e.g., ...). Figure 3 (as shown) contacts and exposes the second region 104 on the top of the optical element 200 (as shown) Figure 3 (As shown). Multiple limiting structures 105 are distributed on the side of the suction structure 101. The limiting structures 105 are used to cover the first part of the sidewall of the optical element 200 (not shown in the figure). The suction structure 101 achieves suction of the optical element 200 by contacting the suction surface 102 with the first region 103 on the top of the optical element 200, preparing for the subsequent adhesive application operation. The suction structure 101 exposes the second region 104 on the top of the optical element 200, which can reserve space for subsequent adhesive application, allowing the adhesive application tool 300 to accurately apply adhesive to the top edge of the optical element 200, making the entire adhesive application process more controllable and improving adhesive application quality and efficiency.

[0040] When the adhesive application assembly provided in this disclosure is in operation, the suction surface 102 of the suction structure 101 in the picking tool 100 contacts the first region 103 on the top of the optical element 200, exposing the second region 104 on the top of the optical element 200. Multiple limiting structures 105 are distributed on the side of the suction structure 101. The limiting structures 105 cover the first portion of the sidewall of the optical element 200, and correspondingly expose a portion of the sidewall of the optical element 200. Thus, the picking tool 100 of the adhesive application assembly can expose a portion of the sidewall of the optical element 200, as well as the second region 104 on the top of the optical element 200 adjacent to the partial sidewall. This defines the adhesive application area, facilitating subsequent direct application of adhesive to the second region on the top of the optical element and the exposed portion of the sidewall, thereby improving the bonding efficiency and quality of the optical element 200.

[0041] In some embodiments, optical elements may include lenses, mirrors, filters, etc. Optical elements can be used in the transmitting and / or receiving optical paths of a lidar system. Lenses can focus and collimate the light beam. Mirrors can deflect the propagation of the light beam. Filters can filter out interfering light, such as ambient light, from the light beam.

[0042] In some embodiments, such as Figure 3As shown, the first region 103 includes the central region of the top of the optical element 200, and the second region 104 includes the edge region of the top of the optical element 200. The first region 103 can be the working region of the optical element 200. The second region 104 can be the non-working region of the optical element 200. The working region can be the region through which the emitted beam and echo beam of the lidar pass. The second region 104 can be located on the periphery of the first region 103. For example, the second region 104 is located around the first region 103 (e.g., ...). Figure 3 (as shown), or the second region 104 is located at the opposite two edges of the first region 103.

[0043] The picking tool 100 contacts the first region 103 on the top of the optical element 200, enabling stable picking up of the optical element 200. Multiple dispersed limiting structures 105 cover the first part of the sidewall of the optical element 200, allowing for precise positioning of the optical element 200 during picking. The picking tool 100 contacts the central region of the optical element 200, leaving the edge region and part of the sidewall of the optical element 200 for subsequent adhesive application. This facilitates precise adhesive application to the exposed area and prevents adhesive from contaminating the working area of ​​the optical element 200 during the application process. While ensuring reliable fixation of the optical element 200, it also maintains the cleanliness of the working area, thereby ensuring the performance of the lidar.

[0044] In some embodiments, the second region 104 of the optical element 200 is adjacent to the exposed sidewall of the limiting structure 105. The adjacency of the second region 104 to the exposed sidewall of the limiting structure 105 provides the necessary space for the adhesive to climb, allowing the adhesive to climb along the side of the optical element 200 to the top of the optical element 200 without intruding into the working area. After the adhesive cures, it can form a multi-directional circumferential effect. Even if the adhesive surface completely fails under high temperature and high humidity conditions, the optical element 200 can still be reliably fixed by the structural force generated by the circumferential force of the adhesive, which can improve the reliability of the lidar.

[0045] In some embodiments, the suction structure 101 is matched to the shape of the optical element 200. For example, the overall shape of the suction surface is approximately the same as the top shape of the optical element 200. The area of ​​the suction surface may be smaller than the top area of ​​the optical element 200. By matching the shape of the suction structure 101 to the optical element 200, it is advantageous to expose part of the sidewalls and top edge of the optical element 200, thus reserving space for the adhesive application tool 300.

[0046] In some embodiments, the suction structure 101 may include: an airway 106 (e.g., Figure 1(As shown). The air passage 106 can communicate with the suction surface 102 to provide suction to the optical element 200 by the picking tool 100. The communication between the air passage 106 and the suction surface 102 can form a negative pressure path, enabling reliable adsorption and fixation of the optical element 200, thereby providing a stable operating basis for subsequent adhesive application processes. For example, the picking tool may include a negative pressure generator to provide negative pressure to the picking tool. Alternatively, the other end of the air passage 106 can be connected to an external negative pressure generator. The negative pressure generator can provide continuous and stable suction to the optical element.

[0047] In some embodiments, such as Figure 1 , Figure 2 As shown, the tool 100 may include a gripping portion 107. The gripping portion 107 may be located on the suction structure 101. The gripping portion 107 may include an air intake channel 108. One end of the air intake channel 108 communicates with the airway 106, and the other end of the air intake channel 108 is connected to a negative pressure generator (not shown in the figure).

[0048] The connection between the grip 107, the air passage 106 on the suction structure 101, and the external negative pressure generator forms a complete negative pressure conduction system. This system allows the tool 100 to provide suction to the optical element 200, enabling the optical element 200 to be stably gripped and positioned. Furthermore, the grip 107 provides a convenient operating interface for the operator, improving the ease of handling and efficiency of the optical element 200.

[0049] In some embodiments, the suction surface 102 may match the top surface of the optical element 200. For example, the suction surface 102 may be a plane, and the top of the optical element 200 may be a plane. Alternatively, the suction surface 102 may be a convex curved surface, and the top of the optical element 200 may be a concave curved surface. Furthermore, the suction surface 102 may be a concave curved surface, and the top of the optical element 200 may be a convex curved surface. Matching the suction surface 102 with the top surface of the optical element 200 increases the contact area between the suction surface 102 and the top of the optical element 200, allowing the suction structure 101 to firmly fix the optical element 200 under the suction force of the air passage 106.

[0050] In some embodiments, a plurality of limiting structures 105 may be distributed on the side of the suction structure 101, and the limiting structures 105 may cover a first portion of the sidewall of the optical element 200. The number of limiting structures 105 may be 2, 3, 4, 5, 6, etc. The limiting structures 105 may be uniformly or non-uniformly distributed on the side of the suction structure 101.

[0051] Multiple limiting structures 105 are distributed on the sidewall of the suction structure 101. The limiting structures 105 can restrict the position of the optical element by the picking tool, thus fixing the optical element 200 and facilitating the picking tool to accurately position the optical element in the required position. The multiple limiting structures 105 can cover part of the sidewall of the optical element 200, defining the exposed area of ​​the sidewall of the optical element 200. This allows the adhesive applicator 300 to accurately apply adhesive to the exposed area, effectively solving the technical problem of inconvenient positioning of small-volume optical elements 200, and improving the accuracy and reliability of adhesive application.

[0052] In some embodiments, the limiting structure 105 protrudes from the suction surface. The limiting structure 105 protruding from the suction surface allows it to cover a first portion of the sidewall of the optical element 200, providing stable lateral support and positioning for the optical element 200. This ensures the optical element 200 remains stable during the adhesive application process, facilitating precise adhesive application by the adhesive application tool 300 to the exposed portion and making the entire adhesive application process more controllable.

[0053] Figure 4 A partial schematic diagram of the limiting structure is shown when an exemplary pick-up tool, consistent with some embodiments of this disclosure, picks up an optical element. In some embodiments, such as Figure 4 As shown, the distance from the bottom of the limiting structure 105 to the suction surface 102 is less than or equal to the thickness of the optical element 200. When the suction structure 101 is used to pick up the optical element 200, and the suction surface 102 of the suction structure 101 is in contact with the optical element 200, the limiting structure 105 will not interfere with the surface carrying the optical element 200, which is beneficial for the suction surface 102 to directly contact the top surface of the optical element 200.

[0054] In some embodiments, the optical element 200 may be a cuboid. The limiting structure 105 may be disposed at a corner of the suction structure 101. The limiting structure 105, disposed at a corner of the suction structure 101, provides positioning support at the intersection of adjacent sidewalls of the optical element 200, achieving precise positioning and fixation of the optical element 200. This ensures the optical element 200 remains stable during the adhesive application process and exposes the middle portion of the sidewall of the optical element 200, allowing the adhesive application tool 300 to accurately apply adhesive to the middle portion of the sidewall of the optical element 200. In some embodiments, the limiting structure may be disposed at the middle position of the sidewall of the suction structure. This placement provides uniform and stable limiting support for the optical element from the central region of the sidewall, ensuring the optical element remains stable during suction. The suction structure can precisely position and reliably fix the optical element, providing a good foundation for subsequent adhesive application processes.

[0055] In some embodiments, the optical element 200 may be circular or elliptical. The limiting structure 105 may be distributed around the suction structure 101.

[0056] In some embodiments, the limiting structure 105 may expose at least two-thirds of the sidewall length of the optical element 200. This allows a certain amount of adhesive area to be retained on the sidewall of the optical element 200, improving the bonding strength and the circumferential effect after the adhesive has cured, thereby enhancing the reliability of the optical element 200 in high temperature and high humidity environments.

[0057] Figure 5 A schematic structural view of an exemplary adhesive applicator consistent with some embodiments of this disclosure is shown. Figure 6 A structural schematic diagram of an exemplary adhesive applicator consistent with some embodiments of this disclosure is shown from another perspective.

[0058] In some embodiments, such as Figure 5 and Figure 6 As shown, the adhesive application assembly includes an adhesive application tool 300. The adhesive application tool 300 includes an adhesive dispensing section 301. The end of the adhesive dispensing section 301 has a cut 302. The cut 302 is used to contact a second portion (not shown) of the sidewall of the optical element 200 exposed by the limiting structure and a second region 104 on the top of the optical element 200.

[0059] The adhesive applicator 300, through its adhesive dispensing section 301 and slit 302, can simultaneously apply adhesive to the second region 104 on the side and top of the optical element 200, improving application efficiency. The slit precisely defines the application area, avoiding the problem of adhesive overflowing into the working area of ​​the optical element 200 as seen in traditional application methods. This allows the adhesive to precisely climb along the side of the optical element 200 to its top, creating a multi-directional wrapping effect after curing. Even if the bonding surface completely fails under high temperature and humidity conditions, the optical element 200 can still be reliably fixed by the structural force generated by the enveloping adhesive. Furthermore, the slit 302 of the adhesive applicator 300, used in conjunction with the pick-up tool 100, facilitates precise positioning and controllable adhesive application of the optical element 200.

[0060] In some embodiments, the cut 302 can be a right-angled cut 302 or an obtuse-angled cut 302. The shape of the cut can match the shape of the optical element. This allows the two sidewalls of the cut to contact the second portion of the sidewall of the optical element 200 and the second region 104 on the top of the optical element 200, respectively. This allows the adhesive to be accurately applied simultaneously to a portion of the sidewall of the optical element 200 and the second region 104 on the top of the optical element 200, which is beneficial for achieving an ideal bonding effect.

[0061] In some embodiments, the radial dimension of the cut 302 is less than or equal to the width of the second region 104 on the top of the optical element 200. This further ensures that adhesive does not penetrate the working area of ​​the optical element 200.

[0062] In some embodiments, the adhesive dispensing portion 301 extends axially, and the size of the cut 302 in the axial extension direction of the adhesive dispensing portion 301 is less than or equal to the thickness of the sidewall of the optical element 200. This prevents adhesive overflow and ensures the accuracy of adhesive application.

[0063] In some embodiments, the adhesive dispensing portion 301 extends axially, and its radial dimension gradually increases in the dispensing direction. The axial extension and gradually increasing radial dimension of the adhesive dispensing portion 301 allow for a larger radial dimension at the end of the dispensing portion 301, facilitating the formation of cuts. Furthermore, the adhesive flows within the increasing space, enabling effective control of the adhesive flow speed and direction. This allows the adhesive to be accurately applied to the sidewalls and top edge areas of the optical element 200, allowing it to climb along the sidewalls to the surface of the optical element 200 without overflowing into the working area of ​​the optical element 200, thus contributing to a reliable wrapping effect.

[0064] In some embodiments, the dispensing portion 301 has a tubular structure with a gradually widening opening.

[0065] In some embodiments, such as Figure 5 and Figure 6 As shown, the glue application tool 300 may further include a glue storage section 303 and a power unit 304. The glue storage section 303 is connected to the glue dispensing section 301. The power unit 304 is connected to the glue storage section 303 and can squeeze the glue in the glue storage section 303 to control the glue from being discharged from the glue dispensing section 301.

[0066] The glue storage section 303 is connected to the glue dispensing section 301. Driven by the power section 304, it realizes the storage, delivery and quantitative discharge of glue, enabling the glue application assembly to perform precise and controllable glue application on the optical element 200. Furthermore, in conjunction with the cut 302 of the glue dispensing section 301, the adhesive can climb up along the side of the optical element 200 to the top of the optical element 200, which facilitates the formation of a wrapping effect on the optical element 200 after the glue cures.

[0067] In some embodiments, the power unit 304 may be pneumatically driven, for example, using a cylinder and piston structure to apply pressure to the glue reservoir 303. In some embodiments, the power unit 304 may also be electrically driven, utilizing a stepper motor in conjunction with a screw drive mechanism to achieve precise delivery of the glue by controlling the motor speed and angle.

[0068] Figure 7A schematic diagram of an exemplary pick-up tool for placing optical elements onto a base plate is shown, consistent with some embodiments of this disclosure. Figure 8 A schematic diagram of an exemplary coating tool for applying adhesive to an optical element, consistent with some embodiments of this disclosure, is shown.

[0069] In some embodiments, the lidar includes an optical element assembly. The optical element assembly includes a base plate 400 and optical elements 200. For example, optical element 200 includes a filter. The number of filters can be one or more. Multiple filters can be attached to the base plate 400 at predetermined positions. Through holes can be provided at positions on the base plate 400 corresponding to the filters 200. These through holes allow light beams to pass through. For example, the optical element includes a lens. The number of lenses can be one or more. Multiple lenses can be arranged along the propagation direction of the light path. The base plate may include a lens mounting bracket. The optical element assembly can be disposed at the transmitting end and / or receiving end of the lidar.

[0070] In some embodiments, during the bonding of optical elements, pre-curing adhesive can be applied to the base plate 400 at positions corresponding to the optical elements. The precise placement of the optical element 200 is achieved through the coordinated action of the suction structure 101 and the limiting structure 105 of the pick-up tool 100, ensuring full contact between the optical element 200 and the pre-applied pre-curing adhesive, thereby guaranteeing the pre-fixation effect. Optionally, after the optical element 200 is pre-fixed, the adhesive can be applied using a gluing tool after the pick-up tool is removed. Alternatively, the pick-up tool can be used directly for gluing without removing it. Using the pick-up tool and gluing tool together facilitates precise control of the gluing area.

[0071] For example, the suction structure 101 of the picking tool 100 can cover the working area of ​​the optical element 200, while exposing the second adhesive area 104 at the top upper edge of the optical element 200 and the second part of the sidewall of the optical element 200. Then, the adhesive applicator 300 applies adhesive along the edge of the optical element 200. Figure 8 As shown, the cut 302 of the adhesive dispensing part 301 of the adhesive applicator 300 contacts the second part of the side wall of the optical element 200 and the second region 104 on the top of the optical element 200. This allows the adhesive to climb up the side of the optical element 200 to the upper surface of the optical element 200 without penetrating the working area of ​​the optical element 200. After the adhesive cures, it will form a multi-directional wrapping effect on the optical element 200, changing the fixing method of the optical element 200 from ordinary adhesive bonding to a structural constraint of adhesive wrapping.

[0072] While the embodiments disclosed herein are as described above, this disclosure is not limited thereto. Any person skilled in the art can make various alterations and modifications without departing from the spirit and scope of this disclosure; therefore, the scope of protection of this disclosure should be determined by the scope defined in the claims.

Claims

1. A coating assembly, characterized in that, include: A tool for picking up optical components, the tool comprising: The suction structure includes a suction surface for contacting a first region on the top of the optical element and exposing a second region on the top of the optical element; Multiple limiting structures are distributed on the side of the suction structure, and the limiting structures are used to cover the first part of the sidewall of the optical element.

2. The adhesive coating assembly as described in claim 1, characterized in that, The adhesive coating assembly also includes: The adhesive application tool includes an adhesive dispensing section, the end of which has a cut for contacting a second portion of the exposed sidewall of the optical element of the limiting structure and a second region on the top of the optical element.

3. The adhesive coating assembly as described in claim 2, characterized in that, The adhesive dispensing portion extends axially, and the radial dimension of the cut is less than or equal to the width of the second region at the top of the optical element.

4. The adhesive coating assembly as described in claim 2, characterized in that, In the extending direction of the adhesive dispensing portion, the size of the cut is less than or equal to the thickness of the sidewall of the optical element.

5. The adhesive coating assembly as described in claim 2, characterized in that, The dispensing section extends axially, and its radial dimension gradually increases in the dispensing direction.

6. The adhesive coating assembly as described in claim 2, characterized in that, The adhesive application tool also includes: A glue storage section, which is connected to the glue dispensing section; The power unit, connected to the glue storage unit, is used to squeeze the glue in the glue storage unit so that the glue can be discharged from the glue outlet.

7. The adhesive coating assembly as claimed in claim 1, characterized in that, The absorption structure is matched to the shape of the optical element.

8. The adhesive coating assembly as claimed in claim 1, characterized in that, The absorption structure further includes: An air passage, connected to the suction surface, is used to enable the picking tool to provide suction to the optical element.

9. The adhesive coating assembly as described in claim 8, characterized in that, The retrieving tool also includes: A grip portion is located on the suction structure. The grip portion includes an air intake channel. One end of the air intake channel is connected to the airway, and the other end of the air intake channel is connected to an external negative pressure generator.

10. The adhesive coating assembly as claimed in claim 2, characterized in that, The first region includes a central region on the top of the optical element, the second region includes an edge region on the top of the optical element, and the second region is adjacent to the second portion.

11. The adhesive coating assembly as claimed in claim 1, characterized in that, The limiting structure protrudes from the absorption surface.

12. The adhesive coating assembly as claimed in claim 1, characterized in that, The distance from the bottom of the limiting structure to the absorption surface is less than or equal to the thickness of the optical element.

Images