Triangular aperture structure of lens

Abstract

The utility model discloses a triangular aperture structure of a lens. The triangular aperture structure comprises a base, a rotating disc and an aperture blade, a circle of positioning holes are uniformly formed in the outer side of the first through hole in the base at intervals; three main guide grooves and a plurality of auxiliary guide grooves are formed in the positions, located on the outer side of the second passing hole, of the rotating disc, the main guide grooves are of vertical structures, and the auxiliary guide grooves are of arc-shaped structures; the aperture blades are arranged between the base and the rotating disc and comprise three main blades and a plurality of auxiliary blades, a first connecting column and a second connecting column are fixedly connected to the two ends of each main blade respectively, a third connecting column and a fourth connecting column are fixedly connected to the two ends of each auxiliary blade respectively, and the first connecting columns and the third connecting columns are rotationally connected into the positioning holes respectively; the second connecting column is slidably connected into the main guide groove, and the fourth connecting column is slidably connected into the auxiliary guide groove. The main blades and the auxiliary blades are connected with the positioning holes of the base and the guide grooves of the rotating disc through the connecting columns, so that the stability and the accuracy of the movement of the blades in the aperture adjusting process are ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lens spare part technical field, concretely is a lens triangular aperture structure. BACKGROUND

[0002] The aperture plays a crucial role in the lens, which is mainly responsible for controlling the amount of light entering the lens and ultimately reaching the imaging sensor. By adjusting the aperture size, photographers can precisely control the exposure according to the lighting conditions of the shooting scene, ensuring that the photographed photos have appropriate brightness. At the same time, the aperture also deeply affects the depth of field effect of the picture, that is, the control of the background blur degree and the clear range. Different aperture settings can create completely different visual experiences, such as large aperture can blur the background and highlight the main body, and small aperture can increase the depth of field to make the overall picture clear, which has great application value in artistic creation.

[0003] The triangular aperture is a kind of special aperture, but like the ordinary circular aperture, one of the main functions of the triangular aperture is also to control the amount of light entering the lens. When the blades are fully opened, the light transmission is the largest, which can let more light reach the imaging sensor of the camera, which is convenient for shooting in a relatively dark environment or using high-speed shutter, etc.; and as the blades gradually shrink, the light transmission hole becomes smaller, and the light transmission decreases accordingly, which can avoid overexposure in a light environment, help photographers precisely control exposure, and obtain photos with appropriate brightness. The existing aperture and triangular aperture are prone to irregular light transmission hole shape when adjusting due to inconsistent rotation angle, asynchronous motion speed and other problems.

[0004] In the patent with the application number CN202411612773.5, a variable aperture and a camera module are disclosed, the variable aperture includes a shell, a rotating part rotatably connected to the shell, a driving part fixedly connected to the shell, and a plurality of blades, each blade is rotatably connected with the rotating part, and each blade is slidably connected with the shell, and the plurality of blades surround the aperture-adjustable aperture hole; one of the blades and the shell is provided with a guide groove, and the other is connected with a guide column, the guide column is inserted into the guide groove, the outer diameter of the guide column is not less than the groove width of the guide groove, the guide column and the guide groove are interference fit and the guide column has elasticity, the guide column is deformed elastically to adapt to the groove width of the guide groove. The blades of this aperture move relatively independently when adjusting, so it is prone to irregular light transmission hole shape due to inconsistent rotation angle, asynchronous motion speed and other problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a lens triangular aperture structure to solve the following problems raised in the background art:

[0006] The existing diaphragm and the triangular diaphragm are prone to irregular aperture shape due to inconsistent rotation angle and asynchronous movement speed during adjustment.

[0007] To solve the above technical problems, the utility model adopts the technical scheme that is:

[0008] A lens triangular diaphragm structure, including base, rotating disc and diaphragm blade, wherein the base and the middle part of the rotating disc are respectively provided with first through hole and second through hole, a circle of positioning holes are uniformly and interval arranged on the base outside the first through hole, three main guide grooves and a plurality of auxiliary guide grooves are arranged on the rotating disc outside the second through hole, the main guide groove is vertical structure, and the auxiliary guide groove is arc structure, the diaphragm blade is arranged between the base and the rotating disc, the diaphragm blade includes three main blades and a plurality of auxiliary blades, the both ends of the main blade are respectively fixed with first connecting column and second connecting column, the both ends of the auxiliary blade are respectively fixed with third connecting column and fourth connecting column, the first connecting column and the third connecting column are respectively rotationally connected in the positioning hole, the second connecting column is slidingly connected in the main guide groove, and the fourth connecting column is slidingly connected in the auxiliary guide groove.

[0009] Further, the main blade and the auxiliary blade are both curved arc structures.

[0010] Further, the number of auxiliary guide grooves is greater than or equal to the number of auxiliary blades.

[0011] Further, the first connecting column and the second connecting column are also respectively located on both sides of the main blade, and the third connecting column and the fourth connecting column are also respectively located on both sides of the auxiliary blade.

[0012] Further, the first connecting column, the second connecting column, the third connecting column and the fourth connecting column are all cylindrical structures.

[0013] Further, the main blade and the auxiliary blade are both soft films, the first connecting column, the second connecting column and the main blade are an integral structure, and the third connecting column, the fourth connecting column and the auxiliary blade are an integral structure.

[0014] Further, the three main blades are staggered and stacked.

[0015] Further, the three main guide grooves are uniformly and interval arranged outside the second through hole, and the auxiliary guide grooves are uniformly divided into three parts, and the three auxiliary guide grooves are respectively arranged between adjacent main guide grooves.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model discloses a rotating disc is rotated to drive main blade and vice blade coordinated motion, and the main blade staggered formation triangle diaphragm, and vice blade is responsible for filling the gap, and the main blade, vice blade are connected through the connecting column and the positioning hole of base and the guide slot of rotating disc, and the stability and accuracy of blade movement in the process of adjusting diaphragm are ensured. The positioning hole of base, the main guide slot and vice guide slot on the rotating disc and the design of corresponding connecting column on the blade, together guarantee the movement coordination of main blade and vice blade in the rotating process. The mutual cooperation, mutual restraint between various components make the blade when following rotating disc rotation can smoothly, orderly action, avoid the emergence single blade movement too fast or too slow, angle deviation etc. Influence diaphragm normal adjusting condition. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is whole structure schematic diagram of the utility model;

[0019] Figure 2 It is structure schematic diagram of diaphragm blade and rotating disc of the utility model;

[0020] Figure 3 It is structure schematic diagram of rotating disc of the utility model;

[0021] Figure 4 It is structure schematic diagram of main blade of the utility model;

[0022] Figure 5 It is structure schematic diagram of vice blade of the utility model.

[0023] Mark in drawing: 1-base, 2-positioning hole, 3-first through hole, 4-rotating disc, 5-diaphragm blade, 6-main guide slot, 7-vice guide slot, 8-main blade, 9-vice blade, 10-second through hole, 11-first connecting column, 12-second connecting column, 13-third connecting column, 14-fourth connecting column. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] Embodiment:

[0026] The utility model provides a lens triangular aperture structure, including base 1, rotating disc 4 and aperture blade 5, wherein, base 1 and rotating disc 4's middle part are provided with first through hole 3 and second through hole 10 respectively, a circle of positioning hole 2 is uniformly arranged on the outside of first through hole 3 on base 1, three main guide grooves 6 and a plurality of vice guide grooves 7 are arranged on the outside of second through hole 10 on rotating disc 4, main guide groove 6 is vertical structure, and vice guide groove 7 is arc structure, aperture blade 5 is arranged between base 1 and rotating disc 4, aperture blade 5 includes three main blades 8 and a plurality of vice blades 9, the both ends of main blade 8 are fixed with first connecting column 11 and second connecting column 12 respectively, the both ends of vice blade 9 are fixed with third connecting column 13 and fourth connecting column 14 respectively, first connecting column 11 and third connecting column 13 are rotatably connected in positioning hole 2 respectively, second connecting column 12 is slidably connected in main guide groove 6, and fourth connecting column 14 is slidably connected in vice guide groove 7.

[0027] Wherein, first through hole 3 and second through hole 10 are used for passing optical fiber, and aperture blade 5 is used for shielding light. Three main blades 8 stagger to form a triangular aperture, and vice blade 9 is used to fill the gap between main blade 8. Positioning hole 2 is used to position main blade 8 and vice blade 9, so that main blade 8 and vice blade 9 can rotate around positioning hole 2. Main guide groove 6 is used to guide the rotation of main blade 8, and vice guide groove 7 is used to guide the rotation of vice blade 9. Specifically, in use, rotating disc 4 is rotated, the groove wall of main guide groove 6 on rotating disc 4 pushes second connecting column 12, second connecting column 12 drives main blade 8 to rotate, and main blade 8 can adjust the size of the triangular aperture in the middle after rotating. At the same time, the groove wall of vice guide groove 7 on rotating disc 4 pushes fourth connecting column 14, fourth connecting column 14 drives vice blade 9 to rotate, so that vice blade 9 can adjust together with main blade 8, and ensure that the gap between main blade 8 can be shielded. The uniform and spaced positioning holes 2 on base 1, the main guide grooves 6 and vice guide grooves 7 on rotating disc 4, and the corresponding connecting columns on the blades, together ensure the movement coordination of main blade 8 and vice blade 9 during rotation. The mutual cooperation and mutual restraint between the components enable the blades to move smoothly and orderly when following the rotation of rotating disc 4, avoiding the situation that a single blade moves too fast or too slow, angle deviation and other factors affecting the normal adjustment of the aperture.

[0028] In a preferred embodiment, the main blades 8 and the auxiliary blades 9 are both curved arc structures. The arc structure enables the blades to better fit adjacent blades when spliced, staggered to form a triangular aperture, and filled in gaps, thereby achieving more rigorous coverage when blocking light, minimizing light leakage from the gaps between the blades, and more accurately controlling the amount of light. Especially when the aperture is contracted to a small state, the arc-shaped blades can be closely matched to ensure effective blocking of light. During rotation with the rotating disc 4, the arc-shaped blades are relatively easier to move smoothly and stably. Due to their own arc characteristics, the blades are subjected to more uniform resistance distribution when guided by the main guide groove 6 and the auxiliary guide groove 7, reducing the possibility of jamming and shaking due to uneven local force, which helps to improve the mechanical stability of the entire aperture structure during opening and closing adjustment, and ensures that the aperture size can be accurately adjusted as expected

[0029] In a preferred embodiment, the number of auxiliary guide grooves 7 is greater than or equal to the number of auxiliary blades 9. Since there are enough auxiliary guide grooves 7, each auxiliary blade 9 can have corresponding or more auxiliary guide grooves 7 to choose from. During rotation of the rotating disc 4 to drive the auxiliary blades 9, the fourth connecting column 14 of the auxiliary blades 9 can always slide smoothly along the groove wall of the auxiliary guide groove 7, ensuring that the rotation trajectory of the auxiliary blades 9 is more accurate and stable.

[0030] In a preferred embodiment, the first connecting column 11 and the second connecting column 12 are also located on both sides of the main blade 8, respectively; and the third connecting column 13 and the fourth connecting column 14 are also located on both sides of the auxiliary blade 9, respectively. This design facilitates the connection of the main blade 8 and the auxiliary blade 9 between the base 1 and the rotating disc 4.

[0031] In a preferred embodiment, the first connecting column 11, the second connecting column 12, the third connecting column 13, and the fourth connecting column 14 are all cylindrical structures. The cylindrical surface is a continuous and smooth curved surface, which enables the main blade 8 and the auxiliary blade 9 to move more easily and smoothly during rotation, avoiding the phenomenon of jamming and lag due to excessive friction.

[0032] In a preferred embodiment, the main blades 8 and the auxiliary blades 9 are soft rubber sheets, the first connecting column 11, the second connecting column 12 and the main blades 8 are an integral structure, and the third connecting column 13, the fourth connecting column 14 and the auxiliary blades 9 are an integral structure. In actual use of the lens, complex external working conditions such as vibration, temperature change, slight collision and the like may be faced. The blades of the soft rubber sheet can better adapt to these conditions due to good flexibility. The integral structure of the first connecting column 11, the second connecting column 12 and the main blades 8 and the integral structure of the third connecting column 13, the fourth connecting column 14 and the auxiliary blades 9 eliminates the weak connection that may exist in the traditional connection mode. In the process of long-term rotation and frequent stress of the blades, the integral structure will not have problems such as loose connection and falling off.

[0033] In a preferred embodiment, the three main blades 8 are arranged in a staggered manner. The staggered arrangement of the main blades 8 can maximize the filling of the gaps that may exist between the main blades 8 when forming a triangular aperture. When light passes through the triangular aperture formed by the staggered main blades 8, the light can be relatively uniformly distributed in the entire light passing area due to the rationality of the blade layout, and problems such as excessive concentration or dispersion of light in some areas due to poor connection between the blades will not occur. In the process of rotating to adjust the size of the aperture, there is a certain mutual restriction and cooperation relationship between the staggered main blades 8. When they rotate, they support and guide each other through the staggered parts, so that the rotation of each main blade 8 is more stable and orderly, avoiding the shaking and deviation from the predetermined track that may occur when a single blade rotates alone

[0034] In a preferred embodiment, the three main guide grooves 6 are uniformly arranged outside the second through hole 10, and the auxiliary guide grooves 7 are uniformly divided into three parts, and the three auxiliary guide grooves 7 are arranged between adjacent main guide grooves 6. Through such an orderly guide groove arrangement, the main blades 8 and the auxiliary blades 9 can be more accurately adjusted in position when the aperture size changes, so that the light can be uniformly blocked or passed through when passing through the triangular aperture. Whether the aperture is fully open, half open or shrunk to a small state, the uniformity of the distribution of light in the light passing hole can be ensured, and the situation that the light is concentrated in a certain area or leaks from an unexpected gap can be avoided.

[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0036] In the utility model, unless another explicit provision and limitation, the term "installation" "arrangement" "connection" "fixation" "screw connection" and so on term should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or become an integral whole, can be mechanical connection, also can be electrical connection, can be direct connection, also can indirectly connect through the intermediate medium, can be two element inside the intercommunication or two element's mutual action relation, unless another explicit limitation, for the ordinary skill in the art, can understand the specific meaning of the above-mentioned term in the utility model according to specific circumstances.

[0037] Although the embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A lens iris structure, characterized in that: It comprises a base (1), a rotating disc (4) and aperture blades (5); wherein the base (1) and the middle part of the rotating disc (4) are respectively provided with a first through hole (3) and a second through hole (10); A circle of positioning holes (2) are uniformly and spacedly arranged on the base (1) outside the first through hole (3); three main guide grooves (6) and a plurality of auxiliary guide grooves (7) are arranged on the rotating disc (4) outside the second through hole (10), the main guide grooves (6) are vertical structures, and the auxiliary guide grooves (7) are arc structures; The aperture blades (5) are arranged between the base (1) and the rotating disc (4), the aperture blades (5) comprise three main blades (8) and a plurality of auxiliary blades (9), the two ends of the main blades (8) are respectively fixed with first connecting columns (11) and second connecting columns (12), the two ends of the auxiliary blades (9) are respectively fixed with third connecting columns (13) and fourth connecting columns (14), the first connecting columns (11) and the third connecting columns (13) are respectively rotationally connected in the positioning holes (2), the second connecting columns (12) are slidingly connected in the main guide grooves (6), and the fourth connecting columns (14) are slidingly connected in the auxiliary guide grooves (7).

2. The lens iris structure according to claim 1, wherein: The main blades (8) and the auxiliary blades (9) are both curved arc structures.

3. The lens iris structure of claim 1, wherein: The number of the auxiliary guide grooves (7) is greater than or equal to the number of the auxiliary blades (9).

4. The lens iris structure of claim 1, wherein: The first connecting columns (11) and the second connecting columns (12) are also respectively located on the two sides of the main blades (8); the third connecting columns (13) and the fourth connecting columns (14) are also respectively located on the two sides of the auxiliary blades (9).

5. The lens iris structure according to claim 4, wherein: The first connecting columns (11), the second connecting columns (12), the third connecting columns (13) and the fourth connecting columns (14) are all cylindrical structures.

6. The lens iris structure according to claim 5, wherein: The main blades (8) and the auxiliary blades (9) are soft rubber sheets, the first connecting columns (11), the second connecting columns (12) and the main blades (8) are an integral structure, and the third connecting columns (13), the fourth connecting columns (14) and the auxiliary blades (9) are an integral structure.

7. The lens iris structure according to claim 1, wherein: The three main guide grooves (6) are uniformly and spacedly arranged outside the second through hole (10); the auxiliary guide grooves (7) are uniformly divided into three parts, and the three parts of the auxiliary guide grooves (7) are respectively arranged between adjacent main guide grooves (6).

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