A novel lens diaphragm structure

Abstract

The utility model discloses a novel lens diaphragm structure relates to the technical field of diaphragm, including diaphragm ring, the arc inner boss of setting in the inner side of diaphragm ring, the sealing reinforcement structure of setting in the inner side of diaphragm ring, wherein, the arc inner boss is provided with a plurality of, and the arc inner boss is connected together in ring, and the included angle between two adjacent arc inner bosses is 30 degrees, and the included angle of arc inner boss root is 60 degrees, and the part of arc inner boss near the inner side of diaphragm ring is provided with arc bevel. The utility model discloses, can when lens video recording, reduce the vignetting and glare of lens edge, promote the picture brightness uniformity and imaging quality, and simultaneously through the petal shape full -enclosing imaging space of diaphragm inner side constitution, can effectively block the stray light reflection of back light or sidelight, reduce ghost and light spot, promote the effect of lens video recording.

Description

Technical Field

[0001] This utility model relates to the field of aperture hood technology, specifically a novel lens aperture hood structure. Background Technology

[0002] A lens hood is an optical component used to block harmful light. It is mainly used in the imaging systems of mobile phone lenses, cameras and other devices. It improves image quality by blocking stray light. Its design is based on the pinhole imaging principle and works significantly in side lighting, backlighting or low light environments, reducing phenomena such as halos and ghosting.

[0003] Currently, traditional light-blocking rings have the following problems:

[0004] To enhance their ability to eliminate stray light and improve image quality, existing lens hoods typically feature a lotus-shaped, cylindrical, or square structure on their inner side. However, the traditional lotus-shaped, cylindrical, and square structures on the inner side of these structures have a smooth, sloping surface on the side that contacts the optical surface. When light shines on this smooth surface, reflections can cause stray light to leak out, affecting the lens hood's image quality. Furthermore, when mounting the lens hood inside the lens, determining its orientation is difficult, leading to misalignment and wobbling after assembly. Utility Model Content

[0005] The purpose of this invention is to provide a novel lens hood structure to solve the problems mentioned in the background art.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a novel lens hood structure, including a hood ring; an arc-shaped inner protrusion disposed on the inner side of the hood ring; and a sealing and reinforcing structure disposed on the inner side of the hood ring.

[0008] The arc-shaped inner protrusions are provided in multiple ways, and the multiple arc-shaped inner protrusions are connected together in a ring. The included angle between two adjacent arc-shaped inner protrusions is set to 30 degrees, and the included angle at the root of the arc-shaped inner protrusion is set to 60 degrees. The part of the arc-shaped inner protrusion near the inner side of the light-shielding ring is provided with an arc-shaped inclined surface.

[0009] Preferably, a reinforcing rib is provided at the inner eccentric position of the light-shielding ring, and an arc-shaped outward protrusion is provided on one side of the reinforcing rib at the outer eccentric position of the light-shielding ring.

[0010] The reinforcing ribs are located on the inner side of the sealed reinforcement structure.

[0011] Preferably, the sealing and reinforcing structure includes: a first embedded protrusion installed at an eccentric position on the inner side of the light-shielding ring; a second embedded protrusion disposed on the inner side of the first embedded protrusion and installed at an eccentric position on the inner side of the light-shielding ring; a vertical rib connected to the inner side of the second embedded protrusion; a reinforcing cover installed at the bottom of the vertical rib; and an embedded protrusion installed on the inner side of the bottom of the reinforcing cover and connected to the inner side of the light-shielding ring.

[0012] Preferably, the second embedded protrusion is located on the outer side of the arc-shaped inner protrusion, and multiple vertical ribs, reinforcing caps, and embedded protrusions are provided.

[0013] The reinforcing rib is pressed down and fixed on the inner side of the reinforcing cover.

[0014] Preferably, the top of the embedded protrusion is provided with a cross-shaped groove, and the horizontal side of the reinforcing cover is provided with a guide groove that communicates with the cross-shaped groove.

[0015] The thickness of the embedded bump, the first embedded protrusion, and the second embedded protrusion is the same.

[0016] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0017] This invention proposes a novel lens hood structure. By incorporating multiple continuous arc-shaped protrusions on the inner side of the hood ring, it reduces vignetting and flare at the edges of wide-angle lenses, improving image brightness uniformity and image quality. Furthermore, it creates a petal-shaped, fully enclosed imaging space, effectively blocking stray light reflections from backlighting or sidelighting, reducing ghosting and flare, especially noticeable in backlit shooting. Combined with a sealed and reinforced structure, this enhances the sealing and stability of the hood structure when mounted on the lens, preventing hood movement during recording. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0019] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a utility model Figure 1 Enlarged structural diagram of region A in the middle;

[0022] Figure 3 This is a schematic diagram of the overall front structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the overall back structure of this utility model;

[0024] Figure 5 This is a partial structural schematic diagram of the light-shielding ring of this utility model;

[0025] In the picture:

[0026] 10. Light-shielding ring; 101. Reinforcing rib; 102. Arc-shaped outward protrusion;

[0027] 20. An inner convex arc; 200. An inclined arc;

[0028] 30. Sealing and reinforcement structure; 301. First embedded protrusion; 302. Second embedded protrusion; 303. Vertical rib; 304. Reinforcing cover; 305. Embedded protrusion; 3051. Cross groove; 3052. Guide groove. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] Please see Figures 1-5 A novel lens hood structure includes a hood ring 10; an arc-shaped inner protrusion 20 disposed on the inner side of the hood ring 10; and a sealing and reinforcing structure 30 disposed on the inner side of the hood ring 10. Multiple arc-shaped inner protrusions 20 are provided, connected in a ring. The included angle between two adjacent arc-shaped inner protrusions 20 is set to 30 degrees, and the included angle at the root of the arc-shaped inner protrusion 20 is set to 60 degrees. An arc-shaped inclined surface 200 is provided on the portion of the arc-shaped inner protrusion 20 near the inner side of the hood ring 10.

[0031] It should be noted that by using multiple continuous arc-shaped inner protrusions 20, a fully enclosed petal-shaped space can be formed inside the light-shielding ring 10. This ensures that when light passes through the space inside the light-shielding ring 10 for imaging, it is less likely to cause vignetting and glare at the inner edge of the light-shielding ring 10, thus improving the uniformity of image brightness and image quality. Furthermore, the design of the arc-shaped bevel 200 ensures smooth entry of optical illumination, further reducing the occurrence of localized ghosting and bokeh in the resulting photograph.

[0032] The inner arc protrusion 20, together with the arc-shaped inclined surface 200 on its side, can distinguish the front and back of the light-shielding ring 10.

[0033] A reinforcing rib 101 is provided at the inner eccentric part of the light-shielding ring 10, and an arc-shaped outward protrusion 102 is provided on one side of the reinforcing rib 101 at the outer eccentric part of the light-shielding ring 10. The reinforcing rib 101 is provided on the inner side of the sealing and reinforcing structure 30.

[0034] This novel lens hood structure, through the design of the reinforcing rib 101, strengthens the hood ring 10, improving its lifespan and strength. Furthermore, the arc-shaped protrusion 102 on its outer side ensures a smooth surface for the hood ring 10, facilitating its installation within the lens.

[0035] The sealing and reinforcing structure 30 includes: a first embedded protrusion 301 installed at an eccentric position inside the light-shielding ring 10; a second embedded protrusion 302 disposed inside the first embedded protrusion 301 and installed at an eccentric position inside the light-shielding ring 10; a vertical rib 303 connected to the inner side of the second embedded protrusion 302; a reinforcing cover 304 installed at the bottom of the vertical rib 303; and an embedded protrusion 305 installed at the bottom inner side of the reinforcing cover 304 and connected to the inner side of the light-shielding ring 10.

[0036] In this design, the second embedded protrusion 302 is located on the outside of the arc-shaped inner protrusion 20. There are multiple vertical ribs 303, reinforcing covers 304 and embedded protrusions 305. Among them, the inner side of the reinforcing cover 304 is pressed down and fixed with reinforcing ribs 101.

[0037] The novel lens hood structure of this invention features a space formed by the first embedded protrusion 301 and the second embedded protrusion 302, which can be matched with the sealing ring inside the lens. This ensures that the sealing ring can be fitted between the first embedded protrusion 301 and the second embedded protrusion 302, improving the stability and sealing performance of the lens hood ring 10 when assembled inside the lens and reducing the likelihood of light leakage. The vertical rib 303 supports the second embedded protrusion 302 and the sealing ring mounted on its outer side, enhancing the support effect and capability of the second embedded protrusion 302 for the sealing ring.

[0038] The design of the reinforcing cover 304 serves two purposes: firstly, it allows for the assembly and fixation of the reinforcing rib 101, ensuring the strength of the reinforcing rib 101 in reinforcing the light-shielding ring 10; secondly, it matches the embedded protrusion 305, improving the stability of the reinforcing cover 304 during assembly and preventing it from easily falling off.

[0039] The top of the embedded protrusion 305 is provided with a cross groove 3051, and the horizontal side of the reinforcing cover 304 is provided with a guide groove 3052 that communicates with the cross groove 3051. The thickness of the embedded protrusion 305, the first embedded protrusion 301 and the second embedded protrusion 302 are the same.

[0040] The novel lens hood structure of this utility model, through the design of the cross groove 3051 and the guide groove 3052, can form a misalignment-proof assembly surface, ensuring the stability of the assembly connection between the embedded protrusion 305 and the reinforcing cover 304, and making it less likely to cause assembly misalignment.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

[0042] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention.

[0043] Therefore, any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this invention, based on the technical solution and inventive concept of this invention, should be covered within the protection scope of this invention.

Claims

1. A novel lens diaphragm structure, characterized by, include: Light-shielding ring (10); an arc-shaped inner protrusion (20) disposed on the inner side of the light-shielding ring (10); a sealing and reinforcing structure (30) disposed on the inner side of the light-shielding ring (10). The arc-shaped inner protrusion (20) is provided in multiple ways, and the multiple arc-shaped inner protrusions (20) are connected together in a ring. The included angle between two adjacent arc-shaped inner protrusions (20) is set to 30 degrees, and the included angle at the root of the arc-shaped inner protrusion (20) is set to 60 degrees. The part of the arc-shaped inner protrusion (20) near the inner side of the light-shielding ring (10) is provided with an arc-shaped inclined surface (200).

2. The novel lens diaphragm structure according to claim 1, characterized in that: A reinforcing rib (101) is provided at the eccentric part inside the light-shielding ring (10), and an arc-shaped outward protrusion (102) is provided on one side of the reinforcing rib (101) at the eccentric part outside the light-shielding ring (10). The reinforcing rib (101) is located on the inner side of the sealed reinforcement structure (30).

3. The novel lens diaphragm structure according to claim 2, characterized in that: The sealing and reinforcing structure (30) includes: a first embedded protrusion (301) installed at the eccentric position inside the light-shielding ring (10); a second embedded protrusion (302) disposed inside the first embedded protrusion (301) and installed at the eccentric position inside the light-shielding ring (10); a vertical rib (303) connected to the inside of the second embedded protrusion (302); a reinforcing cover (304) installed at the bottom of the vertical rib (303); and an embedded protrusion (305) installed inside the bottom of the reinforcing cover (304) and connected to the inside of the light-shielding ring (10).

4. The novel lens hood structure according to claim 3, characterized in that: The second embedded protrusion (302) is located on the outside of the arc-shaped inner protrusion (20), and multiple vertical ribs (303), reinforcing caps (304), and embedded protrusions (305) are provided. The reinforcing rib (101) is pressed down and fixed on the inner side of the reinforcing cover (304).

5. The novel lens hood structure according to claim 3, characterized in that: The top of the embedded protrusion (305) is provided with a cross groove (3051), and the horizontal side of the reinforcing cover (304) is provided with a guide groove (3052) that communicates with the cross groove (3051). The thicknesses of the embedded protrusion (305), the first embedded protrusion (301), and the second embedded protrusion (302) are the same.

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