WO2024045703A1

WO2024045703A1 - Lens fixing device and relevant apparatus

Info

Publication number: WO2024045703A1
Application number: PCT/CN2023/095930
Authority: WO
Inventors: 方志方; 赵峰; 黄志阳
Original assignee: 华为技术有限公司
Priority date: 2022-08-31
Filing date: 2023-05-24
Publication date: 2024-03-07
Also published as: CN117666237A

Abstract

A lens fixing device (3000) and a relevant apparatus, which are used for improving the stability of a lens, thereby improving the display or imaging definition. The lens fixing device (3000) comprises a cover ring (3200), and a connector (3100) which is located on the lens, wherein the connector (3100) comprises a first thread (3110) and a first connecting module (3120), the first thread (3110) being configured to be connected to a second thread on a body; and the cover ring (3200) comprises a second connecting module (3210) and a first connecting face (3220), the second connecting module (3210) being configured to cooperate with the first connecting module (3120) to restrict the rotation of the lens relative to the cover ring (3200), and the first connecting face (3220) being configured to restrict the rotation of the cover ring (3200) relative to the body.

Description

Lens fixing device and related equipment

This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on August 31, 2022, with application number 202211057799.9 and the application title "A lens fixing device and related equipment", the entire content of which is incorporated herein by reference. Applying.

Technical field

Embodiments of the present application relate to the field of optics, and in particular, to a lens fixing device and related equipment.

Background technique

The lens is used to realize display, image collection, etc. If the lens is applied to a moving device, the lens needs to be fixed to the body of the device. Since the positional relationship between the lens and the body is determined according to the specific scene (for example, the distance between the lens and the body needs to be fine-tuned based on assembly errors), during the process of installing the lens to the body, it is necessary to adjust the relationship between the lens and the body. adjust the positional relationship between them.

Currently, lens fixing methods that can adjust the positional relationship include springs, sawtooth + locking balls, etc.

During the movement of the device, the connection between the lens and the body may vibrate. When jitter occurs in the current connection method, the positional relationship between the lens and the body may change, affecting the stability of the lens position, thereby affecting display clarity, image acquisition clarity, etc.

Contents of the invention

Embodiments of the present application provide a lens fixing device and related equipment for improving the stability of the lens position, thereby improving display or imaging clarity.

In a first aspect, embodiments of the present application provide a lens fixing device. The lens mounting device includes a cover ring and a connecting piece located on the lens. Wherein, the connecting piece includes a first thread and a first connecting module. The first thread is used to connect with the second thread on the fuselage, and the first connection module is used to connect the cover ring. The cover ring includes a second connection module and a first connection surface. The second connection module is used to cooperate with the first connection module to limit the rotation of the lens relative to the cover ring. The first connection surface is used to limit the rotation of the cover ring relative to the fuselage.

The lens may include a lens and a lens barrel. The connector can be located on the lens barrel to connect the lens to the body. Optionally, the first thread, the first connection module, etc. of the connector can be processed on the lens barrel through cutting or other processes, or can be fixed on the lens barrel through gluing, mounting, etc. This method There are no restrictions on this application.

Wherein, the first connection surface may be a plane perpendicular to the first thread rotation axis, and face the direction of the fuselage during assembly.

Optionally, the first connection surface may be used to limit the rotation of the cover ring along the rotation axis of the second thread, thereby limiting the rotation of the cover ring relative to the fuselage.

In the embodiment of the present application, the first connection surface limits the rotation of the cover ring relative to the body (for example, rotation along the rotation axis of the second thread), and the cooperation of the first connection module and the second connection module limits the rotation of the lens relative to the cover. The rotation of the circle. So through the first The connecting surface, the first connecting module and the second connecting module can restrict the rotation of the lens along the rotation axis of the second thread. Since the lens and the body are connected through threads (the first thread and the second thread), the rotation of the lens along the rotation axis of the second thread is restricted, that is, the axial displacement of the lens along the rotation axis of the second thread is restricted. The rotation and displacement between the lens and the body are limited, which limits the movement of the lens relative to the body (movement includes translation and rotation), and fixes the position of the lens relative to the body. Because the above-mentioned multiple notches can limit the rotation of the cover ring through relatively stable connection methods such as threads and welding, these connection methods are highly reliable under vibration conditions, so in sports scenes, the stability of the lens position can be improved, thereby improving the The clarity of display or imaging.

In an optional implementation manner, a plurality of notches are provided on the first connection surface, and the plurality of notches are locked with the connection holes on the fuselage through the fixing member. The fixing members may be bolts, screws, rivets, pins, etc., which are not limited in this application.

In the embodiment of the present application, multiple notches and the fuselage are locked through fasteners such as bolts and screws. When the fuselage vibrates, these fasteners limit the movement of the cover ring relative to the fuselage through shear force. , this restriction method is highly reliable in the case of vibration, improves the stability of the cover ring relative to the position of the fuselage, and also improves the stability of the lens relative to the fuselage, thus improving the clarity of the display or imaging. .

In an optional implementation manner, the first connection surface is locked with the fuselage through welding, gluing, or other methods.

In an optional implementation, the number of multiple notches on the cover ring is m, and n of the m notches are used to be locked with the n connection holes on the fuselage through fasteners. Among them, m≥n.

In the embodiment of the present application, the number of notches on the cover ring is greater than or equal to the number of connection holes on the fuselage. In the process of fixing the cover ring to the fuselage, the cover ring can be rotated to fine-tune the relationship between the cover ring and the fuselage. The radial position aligns the notch with the connecting hole to achieve locking. Since the lens and the body are connected through threads, fine-tuning the radial position can achieve fine-tuning of the axial position of the lens relative to the body. By setting a larger m (such as 30, 50, etc.), the radial position can be reduced. Fine-tuning the angle and converting it to the axial direction can reduce the error in the distance between the lens and the body.

For example, if m=36, n=6, the notch on the cover ring can be aligned with the connection hole on the body within a fine-tuning range of 5° (360°÷36÷2=5°), thereby positioning the lens relative to the The axial position error relative to the fuselage is limited to 5°, making the axial position of the lens relative to the fuselage highly accurate.

It is worth noting that in the embodiments of the present application, unless otherwise specified, the radial direction and the axial direction generally refer to the radial direction and the axial direction of the rotation axis of the second thread.

In an optional implementation, the number of multiple notches on the cover ring is m, and the m notches are used to lock with m connection holes among the n connection holes on the fuselage through fasteners. Among them, m≤n.

In the embodiment of the present application, the number of notches on the cover ring is less than or equal to the number of connection holes on the fuselage. In the process of fixing the cover ring to the fuselage, the cover ring can be rotated to fine-tune the relationship between the cover ring and the fuselage. The radial position aligns the notch with the connecting hole to achieve locking. Since the lens and the body are connected through threads, fine-tuning the radial position can realize fine-tuning the axial position of the lens relative to the body. By setting a larger n (such as 30, 50, etc.), the radial position can be reduced. Fine-tuning the angle and converting it to the axial direction can reduce the error in the distance between the lens and the body.

For example, if m=4, n=30, the notch on the cover ring can be aligned with the connection hole on the body within a fine-tuning range of 6° (360°÷30÷2=6°), thereby positioning the lens relative to the camera body. The axial position error relative to the fuselage is limited to 6°, making the axial position of the lens relative to the fuselage highly accurate.

In the embodiment of the present application, if the angle between two adjacent notches among the m notches on the cover ring is θ1 (that is, the m notches are distributed along a circle, the distance between the two adjacent notches and the center of the circle The angle between the connecting lines is θ1), and the angle between two adjacent connecting holes among the n connecting holes on the fuselage is θ2 (that is, the n connecting holes are distributed along a circle, and the two adjacent gaps are in contact with the circle. The angle between the connecting lines between the centers of the circles is θ2), then θ1 and θ2 can both be an integer multiple of a certain angle, so that the notch 3221 and the connecting hole can be aligned with each other to achieve locking.

For example, if m gaps on the cover ring are evenly distributed along a circle, the angle θ1 between adjacent gaps in the m gaps is 45°; n connection holes on the fuselage are evenly distributed along a circle, and the n connections The angle θ2 between adjacent connecting holes in the hole is 30°, then θ1 and θ2 are both integer multiples of 15°. Every 15° rotation, the notch can be aligned with the connecting hole.

Optionally, the relationship between θ1 and θ2 can also be a multiple. For example, if the number m of notches on the cover ring is greater than the number n of connection holes on the fuselage, θ2 can be made an integer multiple of θ1; if m is less than n, θ1 can be made an integer multiple of θ2.

In an optional implementation, a plurality of notches are provided on the first connection surface, and the plurality of notches are used to cooperate with protrusions on the fuselage to limit the rotation of the cover ring relative to the fuselage.

In the embodiment of the present application, the rotation of the cover ring relative to the body is limited through the cooperation of the notch and the protrusion. Since the structure of the notch and the protrusion is simple, the structural complexity and cost of the lens fixing device can be reduced.

In an optional implementation, the first connection surface includes a plurality of protrusions, which are used to cooperate with the connection holes on the fuselage to limit the rotation of the cover ring relative to the fuselage.

In the embodiment of the present application, the rotation of the cover ring relative to the body is limited by the cooperation between the protrusion and the connection hole. Since the structure of the protrusion and the connection hole is simple, the structural complexity and cost of the lens fixing device can be reduced.

In an optional implementation, if the position tolerance of the lens along the direction of the rotation axis of the second thread (i.e., the axial tolerance) is δ, then any of the pitch l of the first thread, the plurality of notches on the cover ring The distance D between a notch and the rotation axis of the second thread, and the maximum distance d between adjacent notches in multiple notches conform to the corresponding relationship shown in the following formula 1.

In the embodiment of this application, the right side of Formula 1 is the actual position error of the lens along the second thread rotation axis. By adjusting d and D according to Formula 1, the actual position error can be controlled within the position allowable error δ. In the axial direction (th The direction of the rotation axis of the second thread makes the lens position error small and high precision.

In Formula 1, d/2D is the radial adjustment particle size, which is called θ/2 in this application (see the description of Figure 8 for details). Optionally, multiple notches on the cover ring can be arranged circumferentially, and the multiple notches can be evenly distributed along the circumference. Then the relationship between the number m of notches on the cover ring and the radial adjustment granularity θ/2 is: Therefore, the allowable error δ of the position of the lens along the rotation axis of the second thread (the axial position error of the lens), the pitch l of the first thread, and the number m of notches on the cover ring are in accordance with the following formula 2 corresponding relationship.

In an optional implementation, the first connection module includes a first groove, and the second connection module includes a first protrusion. The first groove is used to cooperate with the first protrusion to limit the lens relative to the cover. Circle rotation.

In the embodiment of the present application, the rotation of the lens relative to the cover ring is limited by the cooperation between the groove and the protrusion, and the protrusion can slide relatively along the extension direction of the groove, as long as the extension direction of the first groove has an axial direction. component, the cover ring and the lens can slide relative to each other along the axial direction. During the assembly process of the lens and the body, even if the axial direction of the lens relative to the body When the position changes, the cover ring can also be pushed toward the fuselage in the axial direction to achieve fitting and locking of the cover ring and the fuselage. That is to say, through the cooperation of the protrusions and the grooves, the cover ring can be adapted to different positions of the lens relative to the body and absorb the deviation in the axial position of the cover ring caused by the different focusing positions of the lens.

In an optional implementation, the first groove extends along the direction of the rotation axis of the first thread, and the first protrusion extends along the direction of the rotation axis of the second thread.

In an optional implementation, the number of first grooves and first protrusions is the same. If the circumference with the first threaded rotation axis as the center is called the first circumference, then the plurality of first grooves can be evenly distributed along the first circumference; if the circumference with the second threaded rotation axis as the center is called the second circumference, then The plurality of first protrusions may be evenly distributed along the second circumference.

Optionally, the first connection module may be a keyway, and the second connection module may be a feather key, which is not limited in this application.

In an optional implementation, the first connection module includes a second protrusion extending along the rotation axis direction of the first thread, and the second connection module includes a second groove extending along the rotation axis direction of the second thread. The second protrusion is used to cooperate with the second groove to limit the rotation of the lens relative to the cover ring.

In the embodiment of the present application, the rotation of the lens relative to the cover ring is limited by the cooperation between the groove and the protrusion, and the protrusion can slide relatively along the extension direction of the groove, as long as the extension direction of the first groove has an axial direction. component, the cover ring and the lens can slide relative to each other along the axial direction. During the assembly process of the lens and the fuselage, even if the axial position of the lens relative to the fuselage changes, the cover ring can be pushed axially towards the fuselage to achieve fitting and locking of the cover ring and the fuselage. That is to say, through the cooperation of the protrusions and the grooves, the cover ring can be adapted to different positions of the lens relative to the body and absorb the deviation in the axial position of the cover ring caused by the different focusing positions of the lens.

In an optional implementation, the second protrusion extends along the direction of the rotation axis of the first thread, and the second groove extends along the direction of the rotation axis of the second thread.

In an optional implementation, the number of the second protrusions and the second grooves are the same. If the circumference with the first thread rotation axis as the center is called the first circumference, then the plurality of second protrusions can be evenly distributed along the first circumference; if the circle with the second thread rotation axis as the center is called the second circumference, then The plurality of second grooves may be evenly distributed along the second circumference.

In a second aspect, embodiments of the present application provide a lens fixing device. The lens fixing device includes a connecting piece. The connecting piece is on the lens, and the connecting piece includes a first thread and a connecting platform. The first thread is used to connect with the second thread on the fuselage. A plurality of notches are provided on the first connection surface of the connecting platform, and the plurality of notches are used to limit the rotation of the lens relative to the body.

The lens may include a lens and a lens barrel. The connector can be located on the lens barrel to connect the lens to the body. Optionally, the first thread, multiple notches, etc. of the connector can be processed on the lens barrel through cutting or other processes, or can be fixed on the lens barrel through gluing, mounting, etc., this application There is no restriction on this.

Optionally, the first connecting surface may be used to limit the rotation of the connecting member along the rotation axis of the second thread, thereby limiting the rotation of the connecting member (lens) relative to the body.

In the embodiment of the present application, the plurality of notches restrict the rotation of the lens along the rotation axis of the second thread. Since the lens (connector) and the body are connected through threads (first thread and second thread), the rotation of the lens along the rotation axis of the second thread is restricted, that is, the rotation of the lens along the rotation axis of the second thread is restricted. direction displacement. The rotation and displacement between the lens and the body are limited, which limits the movement of the lens relative to the body (movement includes translation and rotation), and fixes the position of the lens relative to the body. Because the above-mentioned multiple notches can limit the rotation of the lens through relatively stable connection methods such as threads and welding, these connection methods are highly reliable under vibration conditions, so in sports scenes, the reliability of the lens position can be improved, thereby improving the display or the clarity of the image.

In an optional implementation, the plurality of notches are locked with the holes on the fuselage through fixing parts. The fixing members may be bolts, screws, rivets, pins, etc., which are not limited in this application.

In an optional implementation, the number of multiple notches on the cover ring is m, and n of the m notches are used to lock with n connection holes on the fuselage. Among them, m≥n.

In an optional implementation, the number of multiple notches on the cover ring is m, and the m notches are used to lock with m connection holes among the n connection holes on the fuselage. Among them, m≤n.

In the embodiment of the present application, if the angle between two adjacent notches among the m notches on the connector is θ1 (that is, the m notches are distributed along a circle, the distance between the two adjacent notches and the center of the circle The angle between the connecting lines is θ1), and the angle between two adjacent connecting holes among the n connecting holes on the fuselage is θ2 (that is, the n connecting holes are distributed along a circle, and the two adjacent gaps are in contact with the circle. The angle between the connecting lines between the centers of the circles is θ2), then θ1 and θ2 can both be an integer multiple of a certain angle, so that the notch 3221 and the connecting hole can be aligned with each other to achieve locking.

In an optional implementation, a plurality of notches are provided on the first connection surface, and the plurality of notches are used to cooperate with protrusions on the fuselage to limit the rotation of the connecting piece relative to the fuselage.

In an optional implementation, the first connection surface includes a plurality of protrusions, which are used to cooperate with the connection holes on the fuselage to limit the rotation of the connecting piece relative to the fuselage.

For the beneficial effects of the second aspect, please refer to the first aspect and will not be described again here.

In a third aspect, embodiments of the present application also provide an optical instrument. The optical instrument includes a lens and a body, and the lens is fixed on the body through the lens fixing device described in the first aspect or the second aspect.

In an optional implementation, the fuselage includes the second thread to achieve connection with the first thread on the connector.

Optionally, the body may also include connection holes. The connection holes are used to achieve locking with the plurality of notches of the first aspect or the second aspect through the fixing member.

In an optional implementation, the fuselage further includes a first circular hole coaxial with the second thread. The lens also includes a first cylinder coaxial with the first thread, and the first cylinder is used to cooperate with the first circular hole on the body.

In the embodiment of the present application, the cooperation between the first cylinder and the first circular hole can ensure that the optical axis of the lens (i.e., the rotation axis of the first thread) and the optical axis of the body (i.e., the rotation axis of the second thread) are The high coaxiality between the axes ensures higher clarity in display or image acquisition.

It is worth noting that in the embodiment of the present application, the coaxiality between the devices is an ideal state. If there is a certain deviation between the optical axes due to processing, assembly, etc., it also falls within the protection scope of the embodiment of the present application.

In an optional implementation, the fuselage further includes a second cylinder coaxial with the second thread. The lens also includes a second circular hole coaxial with the first thread, and the second circular hole is used to cooperate with the second cylinder on the body.

In the embodiment of the present application, the cooperation between the second circular hole and the second cylinder can ensure high coaxiality between the optical axis of the lens and the optical axis of the body, ensuring higher performance in display or image collection. of clarity.

In an optional implementation, the lens may include a lens barrel and an lens, the lens may include at least one lens, and the body may include an image source module or an acquisition module. The lens fixing device is used to fix the distance between at least one lens and the image source module; or the lens fixing device is used to fix the distance between at least one lens and the acquisition module.

In the embodiment of the present application, the distance between at least one lens and the image source module can be fixed through the lens fixing device (for example, the distance is the focal length of the lens or the equivalent focal length of the lens group), thereby achieving a clear display effect. Through the lens fixing device, the distance between at least one lens and the collection module can be fixed (for example, the distance is the focal length of the lens or the equivalent focal length of the lens group), thereby achieving clear imaging on the collection module.

It is worth noting that at least one lens can be a lens or a lens group; if it is a lens, the distance between the lens and the image source module/acquisition module is the object-square main plane of the lens and the image source module/acquisition module If it is a lens group, the distance between the lens group and the image source module/acquisition module is the distance between the object-plane main plane of the lens group and the image source module/acquisition module.

In an optional implementation, the optical instrument is a collection device, and the body of the collection device includes a collection module. Among them, the lens fixing device can be used to fix the distance between the lens and the acquisition module.

In an optional implementation, the optical instrument is a display device, and the body of the display device includes an image source module. The lens fixing device can be used to fix the distance between the lens and the image source module.

Optionally, the display device can be a car light, a head up display (HUD), etc., this There are no restrictions on this application.

In a fourth aspect, embodiments of the present application provide a vehicle. The transportation equipment includes the display device described in the third aspect, and the display device is installed on the vehicle.

In an optional implementation, the lens includes a lens barrel and a lens, and the vehicle further includes a reflective element. The lens is used to project the light from the image source module to the reflective element, and the reflective element is used to reflect the light.

For the beneficial effects of the third aspect to the fourth aspect, please refer to the first aspect and the second aspect, and will not be described again here.

Description of drawings

Figure 1 is a schematic structural diagram of the display system;

Figure 2 is a schematic structural diagram of the image acquisition system;

Figure 3 is a schematic structural diagram of a lens fixing device provided by an embodiment of the present application;

Figure 4 is a schematic diagram of the assembly process provided by the embodiment of the present application;

Figure 5 is a schematic diagram showing the distribution of multiple notches on the cover ring and the connection holes on the body according to the embodiment of the present application;

Figure 6 is another schematic diagram of the distribution of multiple notches on the cover ring and the connection holes on the body according to the embodiment of the present application;

Figure 7 is a schematic structural diagram of a cover ring provided by an embodiment of the present application;

Figure 8 is a schematic diagram of the positional relationship between multiple notches and connecting holes provided by the embodiment of the present application;

Figure 9 is a schematic structural diagram of a lens provided by an embodiment of the present application;

Figure 10a is another structural schematic diagram of a connector provided by an embodiment of the present application;

Figure 10b is another structural schematic diagram of the connector provided by the embodiment of the present application;

Figure 11 is a schematic structural diagram of a lens fixing device including internal threads provided by an embodiment of the present application;

FIG. 12 is a schematic structural diagram of another lens fixing device provided by an embodiment of the present application.

Detailed ways

The embodiments of the present application are described below with reference to the accompanying drawings. Persons of ordinary skill in the art know that with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

The terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the terms so used are interchangeable under appropriate circumstances, and are merely a way of distinguishing objects with the same attributes in describing the embodiments of the present application. Furthermore, the terms "include" and "have" and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product or apparatus comprising a series of elements need not be limited to those elements but may include none Other elements that are clearly listed or inherent to such processes, methods, products or equipment. In addition, "at least one" means one or more, and "plurality" means two or more. "and/or", description The association relationship of associated objects means that there can be three relationships. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. The character "/" generally indicates that the related objects are in an "or" relationship. "At least one of the following" or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items). For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple .

The lens can refract, converge, etc. the light beam, thereby projecting the light beam at a certain position to achieve display or image collection. If the lens is used for display, the structure of the display system is shown in Figure 1. In the display system, the image source module emits a light beam, and the lens can focus the light beam from the image source module on a certain plane to display an image on that plane. Optionally, the display system can be applied in fields such as projection displays, car lights, head-up displays, searchlights, projectors, etc. This application does not limit this.

If the lens is used for image acquisition, the structure of the image acquisition system is shown in Figure 2. The lens can focus the light from the acquisition object on a certain plane. The acquisition module collects images of the physical object from this plane. Optionally, the image display scene can be applied in fields such as photography and aerospace, which is not limited in this application. Optionally, the collection objects can be living things such as humans, animals, plants, mountains, rivers, buildings, indoors and other environments, or robots, production and processing equipment and other equipment, which is not limited in this application.

In the above display system and image acquisition system, the positional relationship between the lens and the image source module/acquisition module is determined according to the optical design of the system. The lens and image source module/acquisition module are both installed on the body of the device. Therefore, by controlling the positional relationship between the lens and the body, the positional relationship between the lens and the image source module/acquisition module can be controlled.

There are production errors, assembly errors, etc. in the lens, body, image source module, acquisition module, etc. In order to reduce the impact of these errors on the optical system of the device, the lens position is adjusted to make the optical system of the device comply with the predetermined optical design, and then the lens is fixed on the body. For example, in a display system, by first adjusting the lens position so that the optical system composed of the lens and the image source module conforms to the predetermined optical design, and then fixing the lens position, a clear display effect can be achieved. For example, in an image acquisition system, first adjust the lens position so that the optical system composed of the lens and the acquisition module conforms to the predetermined optical design, and then fix the lens position to collect clear images.

Therefore, during the lens fixation process, the positional relationship between the lens and the body needs to be adjusted. Currently, lens fixing methods that can adjust the positional relationship include springs, sawtooth + locking balls, etc. If the device is used in a moving scene (for example, the device is a moving vehicle), the connection between the lens and the body may shake. The above-mentioned spring, sawtooth + locking and other adjustable positional relationship connection methods may cause the positional relationship between the lens and the body to change under the action of jitter, affecting the stability of the lens position, thereby affecting display clarity and image The clarity of the collection, etc. The clarity of displays, image acquisition, etc. gradually deteriorates as the vibration time accumulates, and may even cause the lens to come out.

In order to solve the above defects, embodiments of the present application provide a lens fixing device and related equipment. The lens fixing device provided by this application is locked with the body through multiple notches to limit the radial rotation of the lens. The connection of the fuselage limits the axial displacement of the lens and improves the stability of the lens position in sports scenes, thereby improving display clarity and image acquisition clarity.

As shown in FIG. 3 , the lens fixing device 3000 provided by the embodiment of the present application includes a connecting piece 3100 and a cover ring 3200 . The connector 3100 is located on the lens and includes a first thread 3110 and a first connection module 3120. The first thread 3110 is used to connect with the second thread on the fuselage, and the first connection module 3120 is used to connect the cover ring 3200 . The cover ring 3200 includes a second connection module 3210 and a first connection surface 3220. The second connection module 3210 is used to cooperate with the first connection module 3120 to limit the rotation of the connection piece 3100 relative to the cover ring 3200 . A plurality of notches 3221 are formed on the first connection surface 3220, and the plurality of notches 3221 are used to limit the rotation of the cover ring 3200 relative to the fuselage. Specifically, the plurality of notches 3221 can be used to limit the rotation of the cover ring 3200 along the rotation axis of the second thread.

The lens may include a lens and a lens barrel. The connector 3100 can be located on the lens barrel and used to connect the lens to the body. Optionally, the first thread 3110, the first connection module 3120, etc. of the connector 3100 can be processed on the lens barrel through cutting or other processes, or can be fixed on the lens barrel through gluing, mounting, etc. , this application does not limit this.

The lens fixing device 3000 provided in the embodiment of the present application is used to fix the position of the lens relative to the fuselage. Therefore, the positional relationship between the lens (or the connector 3100) and the fuselage is described using the rotation axis of the second thread on the fuselage as a reference. . Specifically, the direction of the rotation axis of the second thread (that is, the direction of the longest straight line in Figure 3) is called the axial direction, and the direction perpendicular to the axial direction is called the radial direction.

In the lens fixing device 3000 provided in the embodiment of the present application, the first connection surface 3220 of the cover ring 3200 is a plane perpendicular to the first thread rotation axis, and during assembly with the fuselage, the first connection surface 3220 faces the machine body. body direction. The plurality of notches 3221 (for example, 4 notches in Figure 3) on the cover ring 3200 are used to lock with the multiple connection holes on the fuselage, thereby limiting the radial rotation of the cover ring 3200 relative to the fuselage (i.e., limiting the cover ring 3200). Circle 3200 rotates along the axis of rotation of the second thread). Optionally, the cover ring 3200 may not include the notch 3221, and the cover ring 3200 may use the first connection surface to limit the radial rotation of the cover ring 3200 relative to the fuselage (for example, through welding, gluing, etc.). This application applies This is not limited.

The second connection module 3210 on the cover ring 3200 is used to cooperate with the first connection module 3120 on the connector 3100 to limit the rotation of the connector 3100 relative to the cover ring 3200 . Combined with the restriction of the radial rotation of the cover ring 3200 by the plurality of notches 3221, the radial rotation of the connector 3100 can be restricted (that is, the rotation of the connector 3100 along the rotation axis of the second thread is restricted).

Because the connection member 3100 and the fuselage are connected through threads (the cooperation of the first thread 3110 and the second thread), and the plurality of notches 3221, the second connection module 3210 and the first connection module 3120 limit the edge of the connection member 3100. The rotation axis of the second thread rotates (that is, it limits the radial rotation of the lens), so the connector 3100 cannot translate along the direction of the rotation axis of the second thread, that is, it limits the axial displacement of the connector 3100, thereby limiting the axis of the lens. direction displacement.

In summary, through the lens fixing device 3000 provided by the embodiment of the present application, the radial rotation and displacement between the lens and the body are limited, which also limits the movement of the lens relative to the body (movement includes translation and rotation). Fixed the position of the lens relative to the body. Because the above-mentioned multiple notches can limit the rotation of the cover ring through relatively stable connection methods such as threads and welding, these connection methods are highly reliable under vibration conditions, so in sports scenes, the stability of the lens position can be improved, thereby improving the The clarity of display or imaging.

In the embodiment of the present application, the lens may include a lens and a lens barrel. The connector 3100 can be located on the lens barrel and used to connect the lens to the body. Wherein, the lens may include at least one lens (a lens or lens group), and the symmetry axis of the optical system of the lens is called the optical axis of the lens, that is, the symmetry axis of at least one lens in the lens is called the optical axis of the lens. The symmetry axis of the first thread 3110 coincides with the optical axis of the lens.

The fuselage may include an image source module or an acquisition module, and the symmetry axis of the optical system of the image source module or acquisition module is called the optical axis of the fuselage. In order to achieve a clear display effect or capture a clear image, the optical axis of the lens should be coaxial with the optical axis of the body.

In the embodiment of the present application, the lens fixing device 3000 is used to fix the lens on the body, so that the position between the lens and the image source module/acquisition module on the body is fixed. Among them, an important parameter is the distance between the lens and the image source module/acquisition module. The lens includes at least one lens. If it includes one lens, the above distance is the distance between the object-side principal plane of the lens and the image source module/acquisition module; if it includes a lens group, the above-mentioned distance is the object-side principal plane of the lens group. The distance between the plane and the image source module/acquisition module.

The lens can be obtained by assembling at least one of the above lenses on the lens barrel. There may be tolerances between the focal lengths of different lenses due to possible tolerances in the assembly between the lens and barrel. By controlling the axial position tolerance between the lens and the body within this focal length tolerance, a clear display/image collection effect can be achieved. That is to say, in the embodiment of the present application, as long as the axial distance error between the control lens and the image source module/acquisition module is not greater than the focal length tolerance (also referred to as the axial position allowable error δ in this application), it is sufficient. Achieve clear display effects and capture clear images.

In the embodiment of the present application, the lens fixing device 3000 is used to fix the position of the lens relative to the fuselage. In order to achieve a clear display effect and collect clear images, the embodiment of the present application also provides an assembly process between the lens and the fuselage. , as shown in Figure 4, the process includes:

Step 1: Match the first thread 3120 with the second thread and focus.

Match the first thread 3120 with the second thread, and then rotate the lens (ie, rotate the connector 3100) so that the distance between the lens and the image source module/acquisition module meets the design of the optical system. For example, rotating the lens changes the distance between the lens in the lens and the image source module/acquisition module, so that the image source module/acquisition module is on the focal plane of the lens.

For example, if the body includes a capture module, the lens position can be adjusted according to the clarity of the captured image until the clarity of the captured image is the highest. For example, if the body includes an image source module, the lens position can be adjusted according to the sharpness of the displayed image until the sharpness of the displayed image is the highest.

Step 2: Match the cover ring 3200 with the connector 3100.

Specifically, the first connection module 3120 and the second connection module 3210 are matched. For example, in Figure 3, the second connection module 3210 (protrusion) is inserted into the first connection module 3120 (recess).

Step 3: Make the first connection surface 3220 contact the surface of the fuselage.

Push the cover ring 3200 toward the fuselage until the first connection surface 3220 contacts the surface of the fuselage.

Step 4: Rotate the cover ring 3200 to lock the plurality of notches 3221 and the connecting holes.

Since the positions of the plurality of notches 3221 on the cover ring 3200 and the connection holes on the fuselage may not completely correspond, the cover ring 3200 is rotated until the plurality of notches 3221 are opposite to the connection holes on the fuselage, so that the plurality of notches 3221 can be Lock with connection hole.

In the embodiment of the present application, the radial position of the cover ring 3200 relative to the fuselage is finely adjusted by rotating the cover ring 3200, so that the notch 3221 is aligned with the connecting hole to achieve locking. In the process of fine-tuning the radial position of the cover ring 3200, the radial position of the lens relative to the body is also fine-tuned accordingly. Since the lens (connector 3100) and the fuselage are connected through threads, fine-tuning the radial position of the lens (connector 3100) relative to the fuselage can be achieved by increasing the notches 3221 or connecting holes. The amount can be used to reduce the angle of radial fine-tuning, which can be converted to the axial direction to reduce the error in the distance between the lens and the body.

In the embodiment of the present application, the number of gaps 3221 is not limited. By reasonably setting the relationship between the number of notches 3220 on the cover ring 3200 and the number of connecting holes on the body, the cover ring 3200 can be rotated along the rotation axis of the second thread before locking the multiple notches 3221 with the connecting holes. (That is, rotate along the rotation axis of the fuselage), so that the notch 3221 is aligned with the connecting hole to achieve locking. Assume that the number of notches 3220 on the cover ring 3200 is m, and the number of connecting holes on the body is n.

In an optional implementation, m≥n, n gaps among the m gaps are used for locking with n connection holes. Taking m=8, n=4 as an example, as shown in Figure 5, 8 notches 3221 (3221-1 to 3221-8) are evenly distributed on the circumference of the first connection surface 3220 with a diameter D, and 4 connections The holes are evenly distributed on the circumference of the fuselage surface with diameter D. Then 4 of the 8 notches 3221 are used to lock with the 4 connection holes on the fuselage. Since the 8 notches on the cover ring 3200 are evenly distributed, the cover ring 3200 can be rotated at a granularity of (360°÷8)÷2=22.5° so that the notch closest to the connection hole is aligned with the connection hole to achieve locking .

Specifically, in the embodiment of the present application, the radial adjustment granularity of the cover ring 3200 and the pitch of the first thread 3110 on the connector 3100 determine the axial adjustment granularity of the lens, that is, the axial error. By increasing the number of notches 3221 or the number of connecting holes, the axial error can be reduced.

The structure of the cover ring 3200 is shown in Figure 7. The plurality of notches 3221 on the cover ring 3200 are evenly distributed along a circle with a radius of D (that is, the distance between any notch 3221 and the first thread rotation axis is D , after assembly, it is the distance between the notch 3221 and the second thread rotation axis, which is also D), and the distance between adjacent notches in the plurality of notches 3221 is d. In the figure, m=8, that is, eight notches 3221 are opened on the cover ring 3200, is used as an example for explanation.

If after step 3 of the assembly process, there is a connecting hole between notch 6 and notch 7, there are three situations shown in Figure 8:

Case 1: The connecting hole is just on the center line of the two notches, then the cover ring 3200 can be rotated to make the notch 6 (such as the notch 3221-6 in Figure 5) or the notch 7 (such as the notch 3221-7 in Figure 5) and The connecting holes are aligned to achieve locking of the notch 3221 and the connecting holes. In this case, the radial error is

Case 2: If the connecting hole is just on a notch, there is no need to rotate the cover ring 3200 to align the notch 7 with the connecting hole, thereby realizing the locking of the notch 3221 and the connecting hole. In this case, the radial error is 0°.

Case 3: The connecting hole is between the center line of two notches and one notch. Since notch 7 is closer to the connecting hole than notch 6, the cover ring 3200 can be rotated to align notch 7 with the connecting hole, thereby realizing the alignment of notch 3221 with the connecting hole. Locked. In this case, the radial error is less than

Situations 1 to 3 can illustrate the cooperation between the notch in the cover ring 3200 and the connection hole on the body. According to situations 1 to 3, in the embodiment of this application,

As shown in FIG. 9 , the pitch of the first thread 3110 on the connecting piece 3100 is l, and the first thread 3110 can convert the radial error into an axial position error. Since in the thread, one radial rotation, the axial movement distance is the pitch l, and Therefore, the error in axial position is:

Optionally, in the embodiment of the present application, the plurality of notches may not be uniformly distributed. If the connecting holes are on the center line of adjacent notches with the largest distance between each other, the axial error will be the largest. That is, if the distance between adjacent notches with the largest distance between each other is d, the axial position error is:

That is to say, in the embodiment of this application, the maximum error in the axial direction is Combined with the above description of the axial position allowable error δ, it can be seen that as long as the axial maximum error δ _max ≤ the axial position allowable error δ of the lens, a clear display effect and clear image collection can be achieved. Therefore, in the embodiment of the present application, the allowable position error δ (axial position error of the lens 3110) of the lens 3110 along the rotation axis direction of the second thread, the pitch l of the first thread 3110, and any of the plurality of notches 3221 can be adjusted. The distance D between a notch and the second thread rotation axis, and the maximum distance d between adjacent notches in the plurality of notches 3221 conform to the corresponding relationship shown in the following formula 1.

In the embodiment of the present application, by adjusting D and d (for example, reducing d/2D), the axial error can be reduced, thereby achieving high-precision axial position adjustment. On the one hand, it can improve the display clarity and image collection clarity; on the other hand, it can be adapted to more scenes. For example, if the allowable error δ of the axial position of the optical system is reduced, D and d can be adjusted to suit Equipped with a smaller axial position allowable error δ.

In the embodiment of the present application, the number m of the notches 3221 opened in the cover ring 3200 is not limited, and may be 10, 30, 50, etc., and the present application does not limit this.

In the embodiment of the present application, θ/2 is used as the radial adjustment granularity. By controlling the number of m, the axial adjustment granularity corresponding to θ/2 can be controlled within a range of no greater than δ. Optionally, the plurality of notches 3221 on the cover ring 3200 can be evenly distributed along a circle with a radius of D (that is, the distance between any notch and the first thread rotation axis is D. After assembly, the distance between the notch and the first thread rotation axis is D). The distance between the two thread rotation axes, this distance is also D), then the relationship between the number m of notches 3221 on the cover ring 3200 and the radial adjustment granularity θ/2 is: Therefore, the allowable error δ of the position of the lens 3110 along the rotation axis of the second thread (the axial position error of the lens 3110), the pitch l of the first thread 3110, and the number m of the notches 3221 on the cover ring 3200 are in accordance with the following The corresponding relationship shown in Formula 2 is described below.

Optional, the allowable error of axial position is δ≤100μm. For example, δ can be 100 μm, 50 μm, 20 μm, 20 μm, 5 μm, etc., which is not limited in this application.

In the embodiment of the present application, if the angle between two adjacent notches among the m notches 3221 on the cover ring 3200 is θ1 (that is, the m notches 3221 are distributed along a circle, the two adjacent notches 3221 are distributed along a circle, and the angle between the two adjacent notches 3221 is θ1 The angle between the connecting lines between the centers of the circles (that is, the axis of symmetry of the first thread) is θ1), and the angle between two adjacent connecting holes among the n connecting holes on the fuselage is θ2 (that is, the angle between the n connecting holes along the Circular distribution, the angle between two adjacent notches and the center of the circle is θ2), then θ1 and θ2 can both be an integer multiple of a certain angle, so that notch 3221 and the connecting hole They can be aligned with each other to achieve locking.

For example, if the number m of notches 3221 on the cover ring 3200 is greater than the number n of connection holes on the body, then θ2 is an integer multiple of θ1; if m is less than n, then θ1 is an integer multiple of θ2. Optionally, the relationship between θ1 and θ2 can also be a multiple. For example, if the number m of notches on the cover ring is greater than the number n of connection holes on the fuselage, θ2 can be made an integer multiple of θ1; if m is less than n, θ1 can be made an integer multiple of θ2.

Optionally, m ≤ n can also be made, then the m notches 3221 on the cover ring are used to lock with m connection holes among the n connection holes on the fuselage. In the same way, if m=4, n=8 (as shown in Figure 6), the cover ring 3200 can adjust the radial position with a granularity of (360°÷8)÷2=22.5°, thereby realizing the connection between the gap 3221 and Alignment of holes.

In this case, the radial error is determined by the distance between the n connection holes on the fuselage. As shown in Figure 6, multiple connecting holes on the fuselage are evenly distributed on a circle with a radius of D (that is, the distance between any connecting hole and the second threaded rotation axis is D). Multiple connecting holes The distance between adjacent connecting holes in the hole is d'. In the figure, n=8, that is, 8 connection holes are provided on the fuselage, is used as an example for explanation. Referring to the description of Figure 7, it can be seen that in the embodiment of the present application,

Therefore, in the embodiment of the present application, the allowable position error δ (axial position error of the lens 3110) of the lens 3110 along the rotation axis direction of the second thread, the first thread 3110, and any of the multiple connecting holes on the body can be adjusted. The distance D between a connecting hole and the second threaded rotation axis, and the maximum distance d' between adjacent connecting holes among multiple connecting holes, conforms to the corresponding relationship shown in the following formula 3.

In the embodiment of the present application, θ/2 is used as the radial adjustment granularity. By controlling the number of n, the axial adjustment granularity corresponding to θ/2 can be controlled within a range of no greater than δ. Optionally, multiple connecting holes on the fuselage can be evenly distributed along a circle with a radius of D (that is, the distance between any connecting hole and the second threaded rotation axis is D), then the connection on the fuselage The relationship between the number of holes n and the radial adjustment particle size θ/2 is: Therefore, the allowable position error δ of the lens 3110 along the rotation axis direction of the second thread (the axial position error of the lens 3110), the pitch l of the first thread 3110, and the number n of connecting holes on the body are consistent with the following The corresponding relationship shown in Equation 4.

In the embodiment of the present application, the plurality of notches 3221 are used to limit the rotation of the cover ring 3200 along the rotation axis of the second thread. Optionally, multiple notches 3221 can be locked with the connection holes on the fuselage through fasteners. The fixing members may be bolts, screws, rivets, pins, etc., which are not limited in this application.

Optionally, corresponding to different fastener structures, the shapes of the plurality of notches 3221 can be determined accordingly. For example, if the fasteners are bolts, screws, etc., each of the plurality of notches 3221 may be a circular hole, and the circular holes may also have threads to cooperate with the fasteners. Optionally, if the fixing part is a self-tapping screw, there is no need to provide threads on the circular hole. Optionally, if the fixing parts are self-tapping screws, there is no need to open connection holes on the fuselage, and the self-tapping screws can be directly driven into the fuselage.

Optionally, if the fastener is a pin, rivet, etc., the shape of the plurality of notches 3221 can be determined according to the cross section of the fastener. For example, if the fixing member is a square pin, each of the plurality of notches 3221 may be a square hole.

Optionally, in addition to using threads, pins, rivets, etc., the multiple notches 3221 on the cover ring 3200 and the connection holes on the fuselage can also be locked by welding, gluing, etc. This application does not do this limited.

Optionally, the cover ring 3200 may not include the plurality of notches 3221, and the cover ring 3200 may use the first connection surface 3220 to limit the radial rotation of the cover ring 3200 relative to the fuselage (for example, through welding, gluing, etc.) , this application does not limit this. This connection method does not require step 4 above, so the radial error is 0°, the corresponding axial error is smaller, and the position accuracy is higher.

In the embodiment of the present application, the plurality of notches (m notches) on the cover ring 3200 are locked with the connection holes (n connection holes) on the fuselage through fasteners. In addition, the locking method of the cover ring 3200 and the fuselage can also be changed. For example, a plurality of notches 3221 can be opened on the first connection surface, and a plurality of protrusions can be provided at corresponding positions on the fuselage (the plurality of protrusions are equivalent to the connection holes in the previous embodiment); the plurality of notches 3221 are It cooperates with the protrusions on the fuselage to limit the rotation of the cover ring relative to the fuselage. For another example, the first connection surface may include a plurality of protrusions (the plurality of protrusions are equivalent to the notches 3221 in the previous embodiment). The plurality of protrusions are used to cooperate with the connection holes on the fuselage to limit the relative position of the cover ring. The body rotates.

In the embodiment of the present application, the rotation of the cover ring relative to the body is limited by the cooperation between the protrusion and the connection hole. Since the structure of the protrusion and the connection hole is simple, the structural complexity and cost of the lens fixing device 3000 can be reduced.

In the embodiment of the present application, the first connection module 3120 and the second connection module 3210 may also have multiple forms. The embodiment of the present application limits the rotation of the connecting piece 3100 relative to the cover ring 3200 through the cooperation between the first connecting module 3120 and the second connecting module 3210, so as to limit the radial rotation of the connecting piece 3100 relative to the fuselage. Therefore, the rotation direction limited by the cooperation of the first connection module 3120 and the second connection module 3210 should be coaxial with the aforementioned radial rotation direction. That is, it is coaxial with the rotation axis of the second thread, and the second thread cooperates with the first thread 3110, so the two connecting parts The limited direction of rotation should be coaxial with the axes of rotation of the first thread 3120 and the second thread.

An optional implementation is shown in Figures 3 to 9. The first connection module 3120 is a groove extending along the direction of the rotation axis of the first thread 3110, and the second connection module 3210 is a groove extending along the direction of the rotation axis of the second thread. Extended bulge. Through the cooperation of the first connection module 3120 and the second connection module 3210, the radial rotation between the connection piece 3100 and the cover ring 3200 can be restricted.

Among them, the number of grooves of the first connection module 3120 matches the number of protrusions of the second connection module 3210 (for example, the number is the same, the grooves are an integer multiple of the protrusions, etc., the protrusions and grooves in Figures 3 and 4 The number is 3) to achieve cooperation between the first connection module 3120 and the second connection module 3210.

If the circumference with the rotation axis of the first thread 3120 as the center is called the first circumference, then the plurality of grooves of the first connection module 3120 can be evenly distributed along the first circumference; if the circumference with the rotation axis of the second thread as the center is Called the second circumference, the plurality of protrusions of the second connection module 3210 may be evenly distributed along the second circumference.

Optionally, the first connection module 3120 may be a protrusion extending along the direction of the rotation axis of the first thread 3110, and the second connection module 3210 may be a groove extending along the direction of the rotation axis of the second thread, which is not limited in this application. . Similarly, the number of protrusions of the first connection module 3120 matches the number of grooves of the second connection module 3210. The protrusions and grooves can also be evenly distributed along the circumference, which is not limited in this application.

In the embodiment of the present application, the rotation of the connecting piece 3100 relative to the cover ring 3200 is limited by the cooperation between the groove and the protrusion, and the protrusions can slide relative to each other along the extending direction of the groove, that is, between the cover ring 3200 and the connecting piece 3100 Can slide relative to each other along the axis. During the assembly process of the connector 3100 and the fuselage, even if the axial position of the connector 3100 relative to the fuselage changes, the cover ring 3200 can be pushed toward the fuselage in the axial direction to achieve close contact between the cover ring 3200 and the fuselage. Close and lock. That is to say, through the cooperation of the protrusions and grooves, the cover ring 3200 can adapt to different positions of the connecting member 3100 relative to the fuselage, and absorb the deviation in the axial position of the cover ring 3200 caused by the different focusing positions of the connecting member 3100.

Optionally, the first connection module 3120 and the second connection module 3210 may also have other structures to limit the radial rotation between the connection piece 3100 and the cover ring 3200. For example, as shown in FIG. 10a , the cover ring 3200 may further include a second connection surface 3230 , and the second connection module 3210 may be a protrusion on the second connection surface 3230 , and the protrusion extends along the direction of the rotation axis of the first thread 3110 . The protrusion may be connected with the inner wall of the cover ring 3200 as shown in FIG. 3 , or may not be in contact with the inner wall, which is not limited in this application. The second connection surface 3230 is a surface on the cover ring 3200 that is parallel to the first connection surface 3220, and the second connection surface 3230 faces the direction of the connector 3100. Correspondingly, as shown in FIG. 10a , the first connection module 3120 may be a recess extending along the direction of the rotation axis of the first thread 3110.

Or as shown in FIG. 10 b , the second connection module may be a hole on the second connection surface 3230 , and the first connection module may be a protrusion extending along the direction of the rotation axis of the first thread 3110 .

Optionally, the first connection module 3120 and the second connection module 3210 can also limit the radial rotation between the connection piece 3100 and the cover ring 3200 through chains, glue, magnetic attraction, shaft holes (rotation restriction), etc. There are no restrictions on this application.

It is worth noting that the embodiment of the present application does not limit the extension direction of the protrusions and grooves, as long as the extension direction has a component in the axial direction, so that the cover ring 3200 and the lens (connector 3100) can slide relative to each other in the axial direction. That’s it.

It is worth noting that the embodiments of the present application do not limit the cross-sectional shapes of the protrusions and grooves. The cross-sections of the protrusions and grooves may be square as shown in Figure 10a, or circular as shown in Figure 10b, or they may be It is other shapes, and this application does not limit this.

Alternatively, the connecting member 3100 and the cover ring 3200 may be fixed with screws, bolts, etc. in a direction perpendicular to the rotation axis of the first thread 3110, thereby limiting the rotation of the connecting member 3100 relative to the cover ring 3200.

In the embodiment of the present application, the first thread 3110 may also have multiple shapes. The first thread 3110 on the connector 3100 only needs to match the second thread on the fuselage. The embodiment of the present application does not limit the shapes of the first thread 3110 and the second thread. Optionally, as shown in Figures 3 to 10b, the first thread 3110 can be an external thread and the second thread can be an internal thread; or as shown in Figure 11, the first thread 3110 can be an external thread and the second thread It is an internal thread, which is not limited in this application.

Optionally, the embodiment of the present application can also provide a first circular hole on the body and a first cylinder on the lens. The first cylinder is coaxial with the first thread 3110, that is, the first cylinder is coaxial with the optical axis of the lens. The first cylinder is coaxial with the second thread, that is, the first cylinder is coaxial with the optical axis of the fuselage. The first cylinder is used to cooperate with the first circular hole.

In the embodiment of the present application, the fitting gap between the first cylinder and the first circular hole can be regarded as the key tolerance (the coaxiality between the optical axis of the lens and the optical axis of the body). By improving the accuracy of the fitting gap , which can improve the coaxiality between the optical axis of the lens and the optical axis of the body, thereby improving the clarity of display or image acquisition.

It is worth noting that in the embodiment of the present application, the coaxiality between the devices (for example, the coaxiality of the above-mentioned first cylinder and the first circular hole) is an ideal state. If the axes of the devices are not aligned due to processing, assembly, etc. There are certain deviations, which also fall within the protection scope of the embodiments of this application.

In the embodiment of the present application, the high coaxiality between the optical axis of the lens and the optical axis of the fuselage is ensured through the cooperation between the first cylinder on the lens and the first circular hole on the fuselage. Display or image acquisition with higher definition.

In the embodiment of the present application, the first cylinder is used to ensure high coaxiality between the optical axis of the lens and the optical axis of the body. Coaxiality can be guaranteed as long as it can be matched with the hole axis of the fuselage. Therefore, in addition to the shape of the cylinder, the coaxiality can also be ensured by the shape of the circular hole. For example, as shown in Figure 11, the second circular hole on the lens can also be used to cooperate with the second cylinder on the body. The second circular hole is coaxial with the rotation axis of the first thread 3110, that is, it is coaxial with the optical axis of the lens; the second cylinder is coaxial with the second thread, that is, it is coaxial with the optical axis of the fuselage. By cooperating with the second circular hole on the lens and the second cylinder on the body, high coaxiality between the lens and the body can be achieved.

It is worth noting that the various forms of the first connection surface 3220, the notch 3221, the first connection module 3120 and the second connection module 3210, the first thread 3110 and the first cylinder 3130 can be combined with each other and appear in the same lens. In the fixing device 3000, this application does not limit this.

The embodiment of the present application also provides a lens fixing device, which integrates the function of locking the cover ring 3200 and the body into the connector 3100. This structure fixes the axial position by limiting radial rotation to ensure the correct contact between the lens and the body. The distance is constant. As shown in FIG. 12 , the lens fixing device 1200 includes a connecting member 1200 . The connecting member 1200 is on the lens, and the connecting member 1200 includes a first thread 1210 and a connecting platform 1220 . The first thread 1210 is used to connect with the second thread on the fuselage. The first connecting surface of the connecting platform 1220 is used to limit the rotation of the lens along the rotation axis of the second thread. Optionally, a plurality of notches 1221 may be opened on the first connection surface, and the plurality of notches 1221 are used to limit the rotation of the lens along the rotation axis of the second thread.

For a detailed description of the first thread 1210, refer to the first thread 3110 of the embodiment shown in FIGS. 3 to 11; for a detailed description of the first connecting surface, refer to the embodiment shown in FIGS. 3 to 11; the first connecting surface and a plurality of For a detailed description of the notch 1221, refer to the first connection surface 3220 and the notch 3221 of the embodiment shown in Figures 3 to 11; for a specific description of the first cylinder, refer to the first cylinder or the first cylinder of the embodiment shown in Figures 3 to 11 The round hole will not be described in detail here.

Optionally, during the assembly process of the lens (connector 1200) and the fuselage, washers, springs, etc. can be spaced between the multiple notches 1221 and the fuselage, thereby realizing the connection between the multiple notches 1221 and the connection holes on the fuselage. Locked, thereby restricting the lens (connector 1200) from rotating along the rotation axis of the second thread on the body.

In the embodiment of the present application, the plurality of notches 1221 restrict the rotation of the lens (connector 1200) along the rotation axis of the second thread. Since the connecting member 1200 is connected to the fuselage through threads (the first thread 1210 and the second thread), the connecting member 1200 is restricted from rotating along the rotation axis of the second thread, that is, the connecting member 1200 is restricted from rotating along the second thread. Axial displacement of the shaft. The rotation and displacement between the lens (connector 1200) and the body are limited, which limits the movement of the lens relative to the body (movement includes translation and rotation), and fixes the position of the lens relative to the body. Because the above-mentioned multiple notches 1221 can limit the rotation of the connector 1200 through relatively stable connection methods such as threading and welding, these connection methods have high reliability under vibration conditions, so in sports scenes, the reliability of the lens position can be improved. Thereby improving the clarity of display or imaging.

Optionally, the connector 1200 may not include the plurality of notches 1221. The connector 1200 may limit the radial rotation of the lens (the connector 1200) relative to the fuselage ( For example, through welding, gluing, etc.), this application does not limit this.

The lens fixing device provided by the embodiment of the present application can be applied to equipment such as collection equipment, display equipment, and communication equipment including optical fibers.

The embodiment of the present application also provides an optical instrument. The optical instrument includes a lens and a fuselage. The lens is fixed to the fuselage through the lens fixing device 3000 or the lens fixing device 1200 described in any one of the embodiments in Figures 3 to 12. superior.

Optionally, the fuselage may also include the second thread described in the first aspect or the second aspect to achieve connection with the first thread on the connecting piece.

Optionally, the body may further include a first circular hole coaxial with the second thread. The lens also includes a coaxial thread with the first The first cylinder is used to cooperate with the first circular hole on the fuselage.

Optionally, the body may also include a second cylinder coaxial with the second thread. The lens also includes a second circular hole coaxial with the first thread, and the second circular hole is used to cooperate with the second cylinder on the body.

Optionally, the optical instrument may be a collection device, and the body of the collection device includes a collection module. Among them, the lens fixing device 3000 or the lens fixing device 1200 is used to fix the distance between the lens and the collection module.

For example, the collection device may be a telescope, a (remote sensing) sight, etc., which is not limited in this application.

Optionally, the collection device may be a fixed-focus collection device. If it is a fixed focus acquisition device, the lens in the lens fixture is a fixed focus lens.

Optionally, the acquisition module in the acquisition device may include a charge coupled device (CCD), a complementary metal oxide semiconductor (CMOS), etc., which is not limited in this application.

Optionally, the optical instrument may be a display device, and the body of the display device includes an image source module. Among them, the lens fixing device 3000 or the lens fixing device 1200 is used to fix the distance between the lens and the image source module.

Optionally, the display device may be a fixed focus display device. If it is a fixed-focus display device, the lens in the lens fixture is a fixed-focus lens.

Optionally, the embodiment of the present application also provides a vehicle. The transportation device includes the aforementioned display device, and the display device is installed on the vehicle. Optionally, the display device can be a car light, a head up display (HUD), etc., which is not limited in this application.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to implement the solution of this embodiment. Purpose.

In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated units can be implemented in the form of hardware or software functional units.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or contributes to the existing technology, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program code. .

Claims

A lens fixing device, characterized by including:

A connector located on the lens, the connector includes a first thread and a first connection module, the first thread is used to connect with the second thread on the body;

The cover ring includes a second connection module and a first connection surface; the second connection module is used to cooperate with the first connection module to limit the rotation of the lens relative to the cover ring; the first connection surface is used for To limit the rotation of the cover ring relative to the fuselage.
The device according to claim 1, characterized in that a plurality of notches are opened on the first connection surface, and the plurality of notches are locked with the connection holes on the body through fixing parts to limit the The cover ring rotates relative to the fuselage.
The device according to claim 2, characterized in that the number of the plurality of notches is m, and n notches among the m notches are used to pass the fixing member and connect to the n connection holes on the body. Locked, where m≥n.
The device according to claim 2, wherein the number of the plurality of notches is m, and the m notches are used to connect with m of the n connection holes on the body through the fixing member. The hole is locked, where m≤n.
The device according to claim 1, wherein a plurality of notches are provided on the first connection surface, and the plurality of notches are used to cooperate with protrusions on the body to limit the cover ring. Rotates relative to the fuselage.
The device according to claim 1, characterized in that the first connection surface includes a plurality of protrusions, the plurality of protrusions are used to cooperate with the connection holes on the body to limit the relative movement of the cover ring. Rotate on the fuselage.
The device according to any one of claims 2 to 6, characterized in that the allowable error of the position of the lens along the rotation axis direction of the second thread is δ, then the pitch l of the first thread, the The distance D between any one of the plurality of notches and the rotation axis of the second thread, and the maximum distance d between adjacent notches among the plurality of notches, conforms to the following corresponding relationship:
The device according to any one of claims 1 to 7, characterized in that,

The first connection module includes a first groove;

The second connection module includes a first protrusion;

The first groove is used to cooperate with the first protrusion to limit the rotation of the lens relative to the cover ring.
The device according to any one of claims 1 to 7, characterized in that,

The first connection module includes a second protrusion;

The second connection module includes a second groove;

The second protrusion is used to cooperate with the second groove to limit the rotation of the lens relative to the cover ring.
An optical instrument is characterized in that it includes a lens and a body, and the lens is fixed on the body through the lens fixing device according to any one of claims 1 to 9.
The optical instrument of claim 10, wherein the body includes the second thread.
The optical instrument according to claim 10 or 11, characterized in that:

The fuselage also includes a first circular hole coaxial with the second thread;

The lens includes a first cylinder coaxial with the first thread, and the first cylinder is used to cooperate with the first circular hole.
The optical instrument according to claim 10 or 11, characterized in that:

The fuselage also includes a second cylinder coaxial with the second thread;

The lens includes a second circular hole coaxial with the first thread, and the second circular hole is used to cooperate with the second cylinder.
The optical instrument according to any one of claims 10 to 13, characterized in that the optical instrument is a collection device, and the body includes a collection module;

The lens fixing device is used to fix the distance between the lens and the collection module.
The optical instrument according to any one of claims 10 to 13, wherein the optical instrument is a display device, and the body includes an image source module;

The lens fixing device is used to fix the distance between the lens and the image source module.
A vehicle, characterized in that it includes the display device according to claim 15, and the display device is installed on the vehicle.
The vehicle according to claim 16, wherein the lens includes a lens barrel and a lens, and the vehicle further includes a reflective element;

The lens is used to project light from the image source module to the reflective element;

The reflective element is used to reflect the light.