Lens light shield and lens

Abstract

The utility model belongs to the technical field of photographic equipment and accessory equipment thereof, and relates to a lens hood and a lens. The lens hood comprises a hood body; the elastic clamping jaws are arranged on the inner side of the cover body in the circumferential direction; the limiting pieces are arranged on the inner side of the cover body, and the limiting pieces and the elastic clamping jaws are arranged in a staggered mode in the circumferential direction; and the at least two first clamping flanges are arranged on the inner side of the cover body and are closer to the mounting end of the cover body compared with the elastic clamping claws and the limiting piece claws. According to the lens hood and the lens provided by the utility model, the first clamping flange of the lens hood can limit the axial movement of the lens hood relative to the lens skeleton, and the elastic clamping jaw is matched with the limiting piece to limit the radial movement stroke of the lens hood relative to the lens skeleton; moreover, the structure of the elastic clamping jaw can effectively prolong the service life of the elastic clamping jaw, and improves the structural stability of the limiting structure of the lens hood.

Description

Technical Field

[0001] This utility model relates to the technical field of photographic equipment and its accessories, and in particular to a lens hood and lens. Background Technology

[0002] A camera or video camera lens is composed of multiple lenses. When light enters, multiple reflective surfaces are created, which has an adverse effect on the image. In order to eliminate or reduce this adverse effect, a lens hood is usually placed at the front of the lens to prevent light outside the imaging angle from entering the lens.

[0003] Currently, most lens hoods are mounted on the lens via a snap-on or threaded connection. However, regardless of whether the lens hood is mounted via a threaded or snap-on connection, it is prone to connection failure due to wear and tear, resulting in poor structural stability and a short lifespan.

[0004] Therefore, there is an urgent need for a product that can solve the above problems. Utility Model Content

[0005] The purpose of this invention is to solve the technical problems of poor structural stability and short service life of existing lens hoods.

[0006] To solve the above-mentioned technical problems, this utility model provides a lens hood and a lens, which adopts the following technical solution:

[0007] The lens hood includes a housing;

[0008] At least two elastic claws are provided, which are arranged circumferentially on the inner side of the cover.

[0009] At least two limiting members are provided, the limiting members being disposed on the inner side of the cover and being connected to each of the elastic clips.

[0010] The claws are staggered circumferentially and cooperate with the elastic claws to limit the radial movement of the cover relative to the lens frame.

[0011] At least two first locking flanges are provided, the first locking flanges being disposed on the inner side of the cover body, and being adjacent to each other.

[0012] The elastic claw and the limiting claw are located near the mounting end of the cover, which is used to limit the axial movement of the cover relative to the lens frame.

[0013] Optionally, the elastic claw includes a protrusion and two connecting portions located at both ends of the protrusion. One end of the connecting portion is fixed to the cover, and the other end is bent to form a transition portion that connects to the protrusion.

[0014] Optionally, the width of the protrusion ranges from 1 to 1.2 mm, and the length ranges from 4 to 6 mm.

[0015] Optionally, the angle between the protrusion and the transition portion ranges from 130° to 140°;

[0016] The radius of the first fillet between the transition portion and the connecting portion ranges from 1 to 1.5 mm;

[0017] The radius of the second fillet between the transition portion and the connecting portion ranges from 0.8 to 1.2 mm.

[0018] Optionally, the radial forced movement distance of the protrusion ranges from 0.5 to 0.7 mm.

[0019] Optionally, the width of the connecting portion and the transition portion ranges from 1 to 1.3 mm.

[0020] Optionally, the distance between the connecting part and the inner side of the cover is in the range of 0.7-1.2mm.

[0021] Optionally, the length of the elastic claw ranges from 13 to 18 mm.

[0022] Optionally, the lens hood further includes at least two second locking flanges, which are circumferentially disposed on the inner side of the hood body and are farther away from the mounting end of the hood body than the first locking flange.

[0023] To solve the above-mentioned technical problems, this utility model also provides a lens, which adopts the following technical solution:

[0024] The lens includes a lens frame and the aforementioned lens hood. One end of the lens frame has at least two latches. The lens hood includes at least two elastic claws, at least two limiting members, and at least two first locking flanges. Each elastic claw and each limiting member is staggered circumferentially. A corresponding latch is engaged between each elastic claw and an adjacent limiting member to limit the radial movement of the lens hood relative to the lens. Each first locking flange is rotatably abutted against its corresponding latch until the latch is axially positioned between the first locking flange and the lens frame to limit the axial movement of the lens hood relative to the lens.

[0025] Compared with the prior art, the lens hood and lens provided by this utility model have the following advantages:

[0026] The lens hood has at least two elastic claws and at least two limiting members arranged circumferentially on the inner side of the hood body, and the first locking flange is located near the mounting end of the hood body relative to the elastic claws and limiting members. When the lens hood is initially installed on the lens, the latch on the lens frame is positioned between the elastic latch and an adjacent limiting member. At this point, the latch is not in contact with the first locking flange, and the lens hood is in a disengaged state. Then, a rotational force is applied to the lens hood towards the elastic latch. Under this rotational force, the elastic latch is deformed by the latch, allowing the lens hood to rotate. Once the lens hood has rotated until the latch disengages from the elastic latch and is positioned between the elastic latch and another adjacent limiting member, the elastic latch returns to its original shape. The latch is now axially positioned between the first locking flange and the lens frame, i.e., the latch and the first locking flange axially abut against the lens frame, restricting the axial movement of the lens hood relative to the lens frame. Simultaneously, the elastic latch and the limiting member restrict the radial movement of the lens hood relative to the lens frame, placing the lens hood in a limited position. Furthermore, the structure of the elastic latch effectively improves its lifespan and increases the structural stability of the lens hood's limiting structure. Attached Figure Description

[0027] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0028] Figure 1 This is a three-dimensional structural diagram of the lens in one embodiment of the present invention;

[0029] Figure 2 yes Figure 1 A three-dimensional exploded diagram of the middle lens;

[0030] Figure 3 yes Figure 1 A top-down view of the middle shot;

[0031] Figure 4 yes Figure 3 A magnified view of point A in the middle lens;

[0032] Figure 5 yes Figure 1 A top view of the lens hood of the center lens;

[0033] Figure 6 yes Figure 5 A magnified view of part B of the lens hood;

[0034] Figure 7 yes Figure 1A longitudinal section view of the lens in the deactivated state;

[0035] Figure 8 yes Figure 7 A magnified view of point C in the middle shot;

[0036] Figure 9 yes Figure 1 A longitudinal section view of the lens in a restricted position;

[0037] Figure 10 yes Figure 9 A magnified view of point D in the middle lens.

[0038] The reference numerals in the attached diagram are as follows: 100, lens hood; 10, hood body; 20, elastic claw; 21, protrusion; 22, connecting part; 23, transition part; 30, limiting member; 40, first locking flange; 50, second locking flange;

[0039] 200. Lens; 60. Lens frame; 70. Locking tongue. Detailed Implementation

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as “length,” “width,” “upper,” “lower,” “left,” “right,” “front,” “rear,” “numerical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” indicate orientations or positions based on the orientations or positions shown in the accompanying drawings and are merely for ease of description and should not be construed as limiting the invention.

[0041] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this utility model are intended to cover non-exclusive inclusion; the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. "A plurality of" means two or more, unless otherwise explicitly specified.

[0042] In the description, claims, and accompanying drawings of this utility model, when an element is referred to as "fixed to," "mounted to," "set on," or "connected to" another element, it can be directly or indirectly located on that other element. For example, when an element is referred to as "connected to" another element, it can be directly or indirectly connected to that other element.

[0043] Furthermore, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0044] It should be noted that the lens hood 100 described in this embodiment is applied to the lens 200, and the lens 200 typically includes a lens frame 60 and a latch 70 disposed on the lens frame 60. Based on this, the lens hood 100, through its limiting structure, cooperates with the lens frame 60 and the latch 70 to achieve the assembly and disassembly of the lens hood 100 and the lens 200.

[0045] This utility model embodiment provides a lens hood 100, such as Figure 1 and Figure 2 As shown, the lens hood 100 includes a resilient claw 20, a limiting member 30, and a first locking flange 40. The structure of the resilient claw 20 gives it good deformation capability, effectively improving its service life and thus increasing the structural stability of the limiting structure of the lens hood 100. At least two resilient claws 20 may be provided, each resilient claw 20 being circumferentially disposed on the inner side of the hood 10.

[0046] At least two limiting members 30 may be provided, which may be disposed inside the housing 10 and staggered circumferentially with each elastic claw 20 to cooperate with the elastic claw 20 to limit the radial movement of the housing 10 relative to the lens frame 60. Specifically, the circumferential distance between adjacent elastic claws 20 and limiting members 30 is just enough to accommodate the latch 70 on the lens frame 60 and limit the circumferential displacement of the latch 70 without sufficient external rotational force.

[0047] Combined Figure 8 and Figure 10 As shown, at least two first locking flanges 40 can be provided, which can be disposed inside the cover 10 and closer to the mounting end of the cover 10 than the elastic clip and the limiting member 30 claw, to limit the axial movement of the cover 10 relative to the lens frame 60. Specifically, a rotational force is applied to the lens hood 100 to rotate it until the first locking flange 40 contacts the latch 70. At this time, the latch 70 is axially located between the first locking flange 40 and the lens frame 60, that is, the latch 70 abuts against the first locking flange and the lens frame 60 axially to limit the axial movement of the lens hood 100 relative to the lens frame 60. Conversely, rotating the lens hood 100 back to the initial position allows it to be removed from the lens frame 60.

[0048] In summary, compared with existing technologies, this lens hood 100 has at least the following beneficial effects:

[0049] When the lens hood 100 is initially installed on the lens 200, the latch 70 on the lens frame 60 is located between the elastic latch 20 and an adjacent limiting member 30. At this time, the latch 70 is not in contact with the first locking flange 40, and the lens hood 100 is in a disengaged state. Then, a rotational force is applied to the lens hood 100 in the direction of the elastic latch 20. After being subjected to this rotational force, the elastic latch 20 is squeezed and deformed by the latch 70 to allow the lens hood 100 to rotate. The lens hood 100 rotates until the latch 70 disengages from the elastic latch 20. When the elastic claw 20 is positioned between the elastic claw 20 and the adjacent limiting member 30, the elastic claw 20 elastically deforms and returns to its original shape. The latch 70 is axially positioned between the first locking flange 40 and the lens frame 60, that is, the latch 70 axially abuts against the first locking flange 40 and the lens frame 60 to limit the axial movement of the lens hood 100 relative to the lens frame 60. At the same time, the elastic claw 20 and the limiting member 30 limit the radial movement of the lens hood 100 relative to the lens frame 60. At this time, the lens hood 100 is in a limited state. Furthermore, the structure of the elastic claw 20 itself can effectively improve the service life of the elastic claw 20 and increase the structural stability of the limiting structure of the lens hood 100.

[0050] To enable those skilled in the art to better understand the present invention, the following will be described in conjunction with the appendix. Figures 1 to 10 The technical solutions in the embodiments of this utility model will be clearly and completely described.

[0051] In some embodiments, such as Figure 3 and Figure 6 As shown, the elastic latch 20 includes a protrusion 21 and two connecting portions 22 respectively disposed on both ends of the protrusion 21. One end of the connecting portion 22 can be fixed to the cover 10, and the other end can be bent to form a transition portion 23. Understandably, when the latch 70 is located between the elastic latch 20 and the adjacent limiting member 30, the protrusion 21 of the elastic latch 20 cooperates with the limiting member 30 to restrict the circumferential movement of the latch 70; when the lens hood 100 is subjected to a rotational external force, the protrusion 21 is squeezed by the latch 70 and elastically deformed, and the protrusion 21 is recessed inward towards the cover 10. After the latch 70 disengages from the protrusion 21, the elastic deformation of the protrusion 21 returns to its original shape.

[0052] In some embodiments, such as Figure 4As shown, the width L1 of the protrusion 21 of the elastic claw 20 can range from 1 to 1.2 mm. Within this range, when rotating the lens hood 100 (i.e., when the latch 70 presses against the elastic claw 20 to move, the same applies below), the operation is smooth, and the stress on the protrusion 21 is evenly distributed, effectively extending its service life. If the width L1 of the protrusion 21 is less than 1 mm, rotating the lens hood 100 will feel loose, resulting in a poor feel and unpleasant user experience; if the width L1 of the protrusion 21 is greater than 1.2 mm, rotating the lens hood 100 will feel jerky, and the stress on the protrusion 21 will concentrate, reducing its service life. Preferably, the width L1 of the protrusion 21 is set to 1 mm.

[0053] The length L2 of the protrusion 21 of the elastic claw 20 can be in the range of 4-6 mm. Within this range, when rotating the lens hood 100, the local stiffness and radial limiting of the elastic claw 20 are moderate, and the rotation of the lens hood 100 is smooth. If the length L2 of the protrusion 21 is less than 4 mm, the local stiffness of the elastic claw 20 will be too large, and there will be a jamming phenomenon when rotating the lens hood 100; if the length L2 of the protrusion 21 is greater than 6 mm, the elastic claw 20 will be over-limited during rotation. Preferably, the length L2 of the protrusion 21 is set to 4.3 mm.

[0054] In some embodiments, such as Figure 4 As shown, the included angle Deg1 (i.e., the transition angle between the protrusion 21 and the transition portion 23) of the elastic claw 20 can range from 130° to 140°. Within this range, when rotating the lens hood 100, the resistance to rotation is moderate, the rotation feel is good, and the lens hood 100 has good anti-dislodgement capability. If the included angle Deg1 between the protrusion 21 and the transition portion 23 is less than 130°, there is significant resistance when rotating the lens hood; if the included angle Deg1 between the protrusion 21 and the transition portion 23 is greater than 140°, the resistance to rotation is too small, the feel is poor, and the anti-dislodgement capability of the lens hood 100 is poor. Preferably, the included angle Deg1 between the protrusion 21 and the transition portion 23 is set to 135°.

[0055] The transition portion 23 of the elastic claw 20 and the connecting portion 22 have a first fillet and a second fillet. The first fillet radius R1 can be set to the side of the connection between the transition portion 23 and the connecting portion 22 closer to the inner side of the cover 10; the second fillet radius R2 can be set to the side of the connection between the transition portion 23 and the connecting portion 22 away from the inner side of the cover 10. The range of the first fillet radius R1 can be 1-1.5 mm, and the range of the second fillet radius R2 can be 0.8-1.2 mm. Within this range, the stress distribution at the connection between the transition portion 23 and the connecting portion 22, as well as at the connection between the transition portion 23 and the protrusion 21, can be effectively improved. Preferably, the first fillet radius R1 is set to 1 mm, and the second fillet radius R2 is set to 0.9 mm.

[0056] In some embodiments, such as Figure 3 As shown, the radial forced movement distance L4 of the protrusion 21 of the elastic claw 20 (i.e., the difference between the radius R3 of the latch 70 and the distance L3 between the protrusion 21 and the axis) can range from 0.5 to 0.7 mm. Within this range, when rotating the lens hood 100, the rotation resistance is moderate, the feel is good, the lens hood 100 has good anti-dislodgement ability, and the stress of the elastic claw 20 is evenly distributed, which can effectively extend its service life. If the radial forced movement distance L4 of the protrusion 21 is less than 0.5 mm, it will result in poor rotation feel and poor anti-dislodgement ability of the lens hood 100; if the radial forced movement distance L4 of the protrusion 21 is greater than 0.7 mm, the rotation resistance is large, there is a noticeable jerking feeling, and it will cause stress concentration in the elastic claw 20, reducing its service life. Preferably, the radial forced movement distance L4 of the protrusion 21 is set to 0.5 mm.

[0057] In some embodiments, such as Figure 4 As shown, the width L5 of the connecting portion 22 and the transition portion 23 of the elastic claw 20 can range from 1 to 1.3 mm. Within this range, when rotating the lens hood 100, the rotation feel is moderate, and the stress of the elastic claw 20 is evenly distributed, effectively extending its service life. If the width L5 of the connecting portion 22 and the transition portion 23 is less than 1 mm, the rotation feel becomes poor; if the width L5 of the connecting portion 22 and the transition portion 23 is greater than 1.3 mm, the rotation feel becomes heavy, and stress concentration in the elastic claw 20 occurs, reducing its service life. Preferably, the width L5 of the connecting portion 22 is set to 1 mm, and the width L5 of the transition portion 23 is set to 1.1 mm.

[0058] In some embodiments, such as Figure 4As shown, the distance L6 (i.e., the radial limiting dimension of the elastic claw 20) between the connecting portion 22 of the elastic claw 20 and the inner side of the cover 10 can range from 0.7 to 1.2 mm. Within this range, when rotating the lens hood 100, the elastic claw 20 can achieve the predetermined deformation amount, the rotation resistance is moderate, and the molding yield of the elastic claw 20 can be ensured. If the distance L6 between the connecting portion 22 and the inner side of the cover 10 is less than 0.7 mm, the elastic claw 20 will be unable to achieve the predetermined deformation amount due to restricted deformation, resulting in excessive rotation resistance; if the distance L6 between the connecting portion 22 and the inner side of the cover 10 is greater than 1.2 mm, the molding yield of the elastic claw 20 will decrease. Preferably, the distance L6 between the connecting portion 22 and the inner side of the cover 10 is set to 1.1 mm.

[0059] In some embodiments, such as Figure 4 As shown, the length L7 of the elastic claw 20 can range from 13 to 18 mm. Within this range, when rotating the lens hood 100, the local rigidity and deformation of the elastic claw 20 are moderate, resulting in smooth rotation and appropriate limitation during rotation. If the length L7 of the elastic claw 20 is less than 13 mm, the local rigidity of the elastic claw 20 will be too high, leading to uneven rotation; if the length L7 of the elastic claw 20 is greater than 18 mm, the local rigidity of the elastic claw 20 will be too low, resulting in excessive deformation and over-limitation during movement. Preferably, the length L7 of the elastic claw 20 is set to 13.4 mm.

[0060] In some embodiments, such as Figure 2 and Figure 3 As shown, the lens hood 100 also includes at least two second locking flanges 50, which are circumferentially disposed on the inner side of the cover body 10 and are located away from the mounting end of the cover body 10 relative to the first locking flange 40. Specifically, when it is necessary to store the lens 200 and the lens hood 100, the lens hood 100 can be flipped onto the lens frame 60, and then a rotational force is applied to the lens hood 100 to rotate it until the second locking flange 50 contacts the latch 70. At this time, the latch 70 is located axially between the second locking flange 50 and the lens frame 60, that is, the latch 70 abuts axially with the second locking flange and the lens frame 60 to restrict the axial movement of the lens hood 100 relative to the lens frame 60.

[0061] In some embodiments, the cover 10, the elastic claw 20, the limiting member 30, the first locking flange 40 and the second locking flange 50 can be integrally molded structures to increase the stability of the structure and reduce manufacturing costs.

[0062] Based on the aforementioned lens hood 100, such as Figure 1 and Figure 2As shown, this embodiment of the present invention also provides a lens 200, including a lens frame 60 and the aforementioned lens hood 100. The lens hood 100 includes at least two elastic claws 20, at least two limiting members 30, and at least two first locking flanges 40. Each elastic claw 20 and each limiting member 30 can be staggered circumferentially, and each elastic claw 20 and adjacent limiting member 30 can be fitted with a corresponding latch 70 to limit the radial movement of the lens hood 100 relative to the lens 200; each first locking flange 40 rotatably abuts against the corresponding latch 70 until the latch 70 is axially positioned between the first locking flange 40 and the lens frame 60, thereby limiting the axial movement of the lens hood 100 relative to the lens 200.

[0063] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A lens hood, characterized by, Including the cover; At least two elastic claws are provided, which are arranged circumferentially on the inner side of the cover. At least two limiting members are provided on the inner side of the cover and are staggered with each of the elastic claws in the circumferential direction, and cooperate with the elastic claws to limit the radial movement of the cover relative to the lens frame. At least two first locking flanges are provided on the inner side of the cover and are closer to the mounting end of the cover than the elastic claw and the limiting claw, for limiting the axial movement of the cover relative to the lens frame.

2. The lens hood according to claim 1, wherein The elastic claw includes a protrusion and two connecting portions located at both ends of the protrusion. One end of the connecting portion is fixed to the cover, and the other end is bent to form a transition portion that connects to the protrusion.

3. The lens hood according to claim 2, wherein The width of the protrusion ranges from 1 to 1.2 mm, and the length ranges from 4 to 6 mm.

4. The lens hood of claim 2, wherein The angle between the protrusion and the transition portion is in the range of 130-140°; The radius of the first fillet between the transition portion and the connecting portion ranges from 1 to 1.5 mm; The radius of the second fillet between the transition portion and the connecting portion ranges from 0.8 to 1.2 mm.

5. The lens hood of claim 2, wherein The radial forced movement distance of the protrusion ranges from 0.5 to 0.7 mm.

6. The lens hood of claim 2, wherein The width of the connecting part and the transition part ranges from 1 to 1.3 mm.

7. The lens hood according to claim 2, characterized in that, The distance between the connecting part and the inner side of the cover ranges from 0.7 to 1.2 mm.

8. The lens hood of claim 1, wherein, The length of the elastic claw ranges from 13 to 18 mm.

9. The lens hood according to any one of claims 1 to 8, wherein The lens hood also includes at least two second locking flanges, which are circumferentially disposed on the inner side of the hood body and are farther away from the mounting end of the hood body than the first locking flange.

10. A lens characterized by comprising: The lens hood includes a lens frame and a lens hood according to any one of claims 1 to 9. One end of the lens frame is provided with at least two latches. The lens hood includes at least two elastic claws, at least two limiting members, and at least two first locking flanges. Each elastic claw and each limiting member is staggered in the circumferential direction. Each elastic claw and the adjacent limiting member are engaged with a corresponding latch to limit the radial movement of the lens hood relative to the lens. Each first locking flange is rotatably abutted against the corresponding latch until the latch is located axially between the first locking flange and the lens frame to limit the axial movement of the lens hood relative to the lens.

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