Lens structure and optical lens

Abstract

The utility model provides a lens structure and an optical lens. The lens structure comprises a lens barrel, a lens arranged in the lens barrel, a pressing ring and a diaphragm. Wherein the pressing ring is arranged in the lens cone, the pressing ring and the lens are stacked, the pressing ring is provided with a first light hole, and the first light hole is a standard circular hole; the diaphragm is arranged in the lens barrel and stacked with the pressing ring, the diaphragm and the pressing ring are located on the same side of the lens, the diaphragm can form a second light hole, the second light hole and the first light hole are coaxially arranged, the aperture of the second light hole is adjustable, and the maximum aperture of the second light hole is larger than the aperture of the first light hole. By the adoption of the technical scheme, the possibility that due to the fact that light irradiates the second light hole of the non-standard circular hole, the diffraction phenomenon is generated, and awns appear is avoided; by modifying the shape of the pressing ring, the influence on the material cost is small, the influence on the assembly process is also avoided, only the inner diameter of the pressing ring needs to be adjusted for lenses with different aperture requirements, the cost is low, the operation is simple, and the effect is remarkable.

Description

Technical Field

[0001] The utility model relates to the technical field of optical lenses, and more specifically, to a lens structure and an optical lens. Background Art

[0002] The starburst effect is caused by the fact that when light passes through the aperture, the aperture is not a standard circle, so the light diffracts when passing through the aperture blades, causing the light to disperse in multiple directions, thus forming a star-like light effect on the photo. The maximum aperture usually refers to the diameter of the largest light hole that the lens can open. At this time, although the light path is shorter, diffraction still occurs, thus producing a starburst effect. Utility Model Content

[0003] The utility model aims to provide a lens structure and an optical lens to solve the technical problem in the prior art that the maximum light hole in the optical lens is not a standard circle, which causes a starburst effect.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] In a first aspect, a lens structure is provided, comprising:

[0006] A lens barrel, a lens arranged inside the lens barrel, a pressure ring and an aperture; wherein the pressure ring is arranged inside the lens barrel and stacked with the lens, the pressure ring is provided with a first light hole, and the first light hole is a standard circular hole; the aperture is arranged inside the lens barrel and stacked with the pressure ring, the aperture and the pressure ring are located on the same side of the lens, the aperture can form a second light hole, the second light hole is coaxially arranged with the first light hole, the aperture of the second light hole is adjustable, and the maximum aperture of the second light hole is greater than the aperture of the first light hole.

[0007] By adopting the above technical solution, the light passes through the second light hole, the first light hole and the lens in sequence. Since the maximum aperture of the second light hole is larger than that of the first light hole, the edge of the first light hole will block the edge of the second light hole with the maximum aperture. Since the first light hole is a standard circular hole, this avoids the diffraction phenomenon caused by the light irradiating the second light hole which is a non-standard circular hole, which may cause the appearance of starbursts.

[0008] In addition, the first light hole is formed on the pressure ring. The lens structure originally requires a pressure ring to fix the lens. Now, by modifying the shape of the pressure ring, the material cost is less affected and the assembly process is not affected. Moreover, for lenses with different aperture requirements, it is only necessary to adjust the inner diameter of the pressure ring. It has low cost, simple operation and significant effect.

[0009] In one embodiment, the aperture of the first light hole is A, and the maximum aperture of the second light hole is A+B, where the value range of B is (0.1 mm-0.5 mm).

[0010] By adopting the above technical solution, the sizes of the first light hole and the second light hole are limited, and the possibility of starbursts appearing can be reduced when the diaphragm is adjusted to the maximum aperture.

[0011] In one embodiment, the value of B is 0.4 mm.

[0012] By adopting the above technical solution, the manufacturing cost of the aperture and the pressure ring and the effect of eliminating starburst are taken into consideration.

[0013] In one embodiment, the lens structure includes a plurality of the pressing rings, the aperture of the first light hole of each of the pressing rings is different, and the plurality of the pressing rings are selectively installed in the lens barrel.

[0014] By adopting the above technical solution, the lens structure can adjust the size of the first light hole of the pressure ring according to different aperture requirements, thereby improving its applicability.

[0015] In one embodiment, the aperture includes an aperture base and a plurality of aperture blades arranged in sequence along the circumference of the aperture base, each of the aperture blades is connected to the aperture base axis, the plurality of aperture blades can enclose to form the second light hole, and the plurality of aperture blades can rotate around the axis to make the aperture of the second light hole adjustable.

[0016] By adopting the above technical solution, the second light hole of the diaphragm can be adjusted.

[0017] In one embodiment, the inner wall of the lens barrel is provided with a first fixing groove, and the lens is arranged in the first fixing groove.

[0018] By adopting the above technical solution, the fixation of the lens is achieved.

[0019] In one embodiment, a second fixing groove is provided on the inner wall of the lens barrel, the second fixing groove is located on one side of the first fixing groove in the axial direction, and the pressure ring is provided in the second fixing groove.

[0020] By adopting the above technical solution, the fixing of the pressure ring and the lens is achieved.

[0021] In one embodiment, a third fixing groove is provided on the inner wall of the lens barrel, the third fixing groove is located on a side of the second fixing groove away from the first fixing groove, and the diaphragm is provided in the third fixing groove.

[0022] By adopting the above technical solution, the fixation of the diaphragm is achieved.

[0023] In one embodiment, the lens barrel, the pressure ring and the aperture are coaxially arranged.

[0024] The adoption of the technical solution facilitates the installation of the lens barrel, the pressure ring and the diaphragm.

[0025] In a second aspect, an optical lens is provided, comprising an optical lens body and the above-mentioned lens structure, wherein the lens structure is mounted on the optical lens body.

[0026] By adopting the above technical solution, on the basis of having the advantages of the lens structure of the above embodiment, the optical lens of this embodiment also has the advantages of low manufacturing cost and less possibility of starburst. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a three-dimensional structural diagram of the lens structure provided by the embodiment of the utility model.

[0029] Figure 2 It is an exploded view of the lens structure provided by an embodiment of the utility model.

[0030] Figure 3 It is a cross-sectional view of a lens structure provided by an embodiment of the utility model.

[0031] Figure 4 yes Figure 3 Enlarged view of point “C” in the figure.

[0032] The reference numerals in the figures are:

[0033] 1. Lens barrel; 2. Lens; 3. Pressure ring; 4. Aperture; X, incident light direction;

[0034] 31, first light hole; 41, second light hole; 42, aperture base; 43, aperture blades; 11, first fixing groove; 12, second fixing groove; 13, third fixing groove. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly located on the other element or indirectly located on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0037] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention, and do not indicate that a device or element must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating relative importance or indicating the number of technical features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The following is a more detailed description of the specific implementation of the present utility model in conjunction with specific embodiments:

[0039] like Figure 1 and Figure 2 As shown, a lens structure provided by an embodiment of the utility model is applied to an optical lens, which can reduce the possibility of starbursts generated by the optical lens.

[0040] For example, when the optical lens is at the maximum aperture, the starburst phenomenon may occur. The lens structure of this embodiment is assembled in the optical lens to prevent the starburst phenomenon from occurring when the optical lens is at the maximum aperture, so as to obtain a suitable photographic picture. The following is an explanation through a specific implementation method:

[0041] The lens structure of this embodiment includes:

[0042] A lens barrel 1, a lens 2 arranged inside the lens barrel 1, a pressure ring 3 and a diaphragm 4;

[0043] Among them, the pressure ring 3 is arranged inside the lens barrel 1 and is stacked with the lens 2. The pressure ring 3 is provided with a first light hole 31, and the first light hole 31 is a standard circular hole; the diaphragm 4 is arranged inside the lens barrel 1 and is stacked with the pressure ring 3. The diaphragm 4 and the pressure ring 3 are located on the same side of the lens 2. The diaphragm 4 can form a second light hole 41, and the second light hole 41 is coaxially arranged with the first light hole 31. The aperture of the second light hole 41 is adjustable, and the maximum aperture of the second light hole 41 is greater than the aperture of the first light hole 31.

[0044] Here, it can be understood that the lens barrel 1 refers to a cylindrical member for fixing the lens 2, the pressing ring 3 and the diaphragm 4; the lens barrel 1 is in the shape of a cylinder, which is a hollow structure and has openings at both ends; the lens barrel 1 plays a fixing role, and the lens 2, the pressing ring 3 and the diaphragm 4 can all be fixed inside the lens barrel 1;

[0045] The lens 2 refers to the light-transmitting lens 2 in the lens structure; the lens 2 can change the refractive index of light and focus the light to form an image; the lens 2 is arranged inside the lens barrel 1 and is arranged directly opposite to the opening of the lens barrel 1;

[0046] The pressing ring 3 is a member used to apply pressure so that the lens 2 can be fixed in the lens barrel 1; the pressing ring 3 is annular in shape, and is arranged inside the lens barrel 1. The pressing ring 3 and the lens 2 are stacked, so that the pressing ring 3 can be pressed on the lens 2 to apply pressure on the lens 2, so that the lens 2 can be pressed tightly in the lens barrel 1; the pressing ring 3 is provided with a first light hole 31, where the first light hole 31 is for light to pass through, and the first light hole 31 is a standard circular hole, so that when the light passes through the first light hole 31, the possibility of diffraction is small;

[0047] The diaphragm 4 refers to a component used to adjust the aperture of the lens structure;

[0048] Please also read Figure 3 and Figure 4 Specifically, the aperture 4 is a component used to control the amount of light that passes through the lens and enters the photosensitive surface in the body; the aperture 4 is arranged inside the lens barrel 1, and the aperture 4 and the pressure ring 3 are stacked, and the aperture 4 and the pressure ring 3 are located on the same side of the lens 2, that is, the aperture 4, the pressure ring 3 and the lens 2 are arranged in sequence along the light incident direction; the light passes through the aperture 4, the pressure ring 3 and the lens 2 in sequence, and because the aperture 4 can form a second light hole 41, the light passes through the second light hole 41, the first light hole 31 and the lens 2 in sequence along the light incident direction; or, the pressure ring 3, the aperture 4 and the lens 2 are arranged in sequence along the light incident direction, so that the light passes through the pressure ring 3 in sequence , diaphragm 4 and lens 2. Since diaphragm 4 can form a second light hole 41, the light passes through the second light hole 41, the first light hole 31 and lens 2 in sequence along the light incident direction. Since the aperture of the second light hole 41 is adjustable and the maximum aperture of the second light hole 41 is greater than the first light hole 31, when the second light hole 41 is adjusted to the maximum aperture, no matter the light enters the second light hole 41 from the first light hole 31 or enters the first light hole 31 from the second light hole 41, it will be blocked by the edge of the first light hole 31, that is, blocked by the pressing ring 3. Since the shape of the first light hole 31 is a standard circular hole, the possibility of starbursts forming in the lens structure is reduced.

[0049] The working principle of the lens structure of this embodiment is as follows:

[0050] This embodiment is described by arranging the aperture 4, the pressure ring 3 and the lens 2 in sequence along the light incident direction X. The light enters the interior of the lens barrel 1 from the opening of the lens barrel 1 along the light incident direction X. The light passes through the second light hole 41 and the first light hole 31, and then reaches the lens 2. When the second light hole 41 is adjusted to the maximum aperture, that is, when the lens structure is the maximum aperture, since the maximum aperture of the second light hole 41 is larger than the first light hole 31, the edge of the first light hole 31 will block the edge of the second light hole 41 with the maximum aperture, so that the light is irradiated to the edge portion of the first light hole 31 but not to the edge portion of the second light hole 41. In this way, since the first light hole 31 is a standard circular hole, the diffraction phenomenon caused by the light irradiating to the second light hole 41 which is a non-standard circular hole is avoided, which may cause the appearance of starbursts.

[0051] By adopting the above technical solution, since the maximum aperture of the second light hole 41 is larger than the first light hole 31, the edge of the first light hole 31 will block the edge of the second light hole 41 with the maximum aperture, so that the light is irradiated to the edge portion of the first light hole 31 but not to the edge portion of the second light hole 41. In this way, since the first light hole 31 is a standard circular hole, the diffraction phenomenon caused by the light irradiating to the second light hole 41 which is a non-standard circular hole is avoided, which may cause the appearance of starbursts.

[0052] In addition, the first light hole 31 is formed on the pressure ring 3. The lens structure originally requires a pressure ring 3 to fix the lens 2. Now, by modifying the shape of the pressure ring 3, the material cost is less affected, and the assembly process is also not affected. Moreover, for lenses with different aperture requirements, it is only necessary to adjust the inner diameter of the pressure ring 3. It has low cost, simple operation and significant effect.

[0053] In one embodiment, the aperture of the first light hole 31 is A, and the maximum aperture of the second light hole 41 is A+B, where the value range of B is (0.1 mm-0.5 mm).

[0054] Here, it can be understood that the diaphragm 4 forms a second light hole 41. Theoretically, the maximum aperture of the diaphragm 4 under the maximum aperture is A. In actual design, the maximum aperture of the second light hole 41 is designed to be A+B, and then the maximum aperture is blocked by the first light hole 31 of the pressure ring 3. At this time, the maximum aperture of the second light hole 41 stacked with the first light hole 31 is still A; at the same time, since the shape of the first light hole 31 of the pressure ring 3 is a standard circular hole, no starburst will be generated when the diaphragm 4 is adjusted to the maximum aperture.

[0055] It needs to be further explained that the value range of B is 0.1 mm-0.5 mm, and the second light hole 41 within this range can reduce the possibility of starbursts appearing.

[0056] By adopting the above technical solution, the sizes of the first light hole 31 and the second light hole 41 are limited, and the possibility of starbursts appearing can be reduced when the aperture 4 is adjusted to the maximum aperture.

[0057] In one embodiment, the value of B is 0.4 mm.

[0058] Here, it can be understood that the preferred value of B is 0.4 mm, so that the manufacturing difficulty of the aperture 4 and the pressure ring 3 is low and the possibility of the appearance of starbursts can be kept low.

[0059] By adopting the above technical solution, the manufacturing cost of the aperture 4 and the pressure ring 3 and the effect of eliminating starburst are taken into consideration.

[0060] In one embodiment, the lens structure includes a plurality of pressing rings 3 , the aperture of the first light hole 31 of each pressing ring 3 is different, and the plurality of pressing rings 3 are selectively installed in the lens barrel 1 .

[0061] Here, it can be understood that the assembler only needs to adjust the aperture of the first light hole 31 of the pressure ring 3 according to the lens with different aperture requirements. The manufacturing cost is low, the operation is simple, and the effect is significant.

[0062] By adopting the above technical solution, the lens structure can adjust the size of the first light hole 31 of the pressure ring 3 according to different aperture requirements, thereby improving its applicability.

[0063] Please refer again Figure 2 In one embodiment, the aperture 4 includes an aperture base 42 and a plurality of aperture blades 43 arranged in sequence along the circumference of the aperture base 42, each aperture blade 43 is axially connected to the aperture base 42, the plurality of aperture blades 43 can enclose to form a second light hole 41, and the plurality of aperture blades 43 can rotate around the axis, so that the aperture of the second light hole 41 is adjustable.

[0064] Here, it can be understood that a plurality of aperture blades 43 can be enclosed to form the second light hole 41, so the second light hole 41 is a polygonal hole rather than a standard circular hole, which causes diffraction of light when passing through the second light hole 41, thereby causing a starburst phenomenon; by setting the first light hole 31, and setting the maximum aperture of the second light hole 41 to be smaller than the aperture of the first light hole 31, the edge of the first light hole 31 will block the second light hole 41 when it is at the maximum aperture, so that the light passes through the standard circular hole, avoiding diffraction at the edge of the irregular second light hole 41.

[0065] By adopting the above technical solution, the second light hole 41 of the diaphragm 4 is adjustable.

[0066] In one embodiment, a first fixing groove 11 is disposed on the inner wall of the lens barrel 1 , and the lens 2 is disposed in the first fixing groove 11 .

[0067] Here, it can be understood that the shape and size of the first fixing groove 11 match the shape and size of the lens 2, so that the lens 2 can be just placed in the first fixing groove 11; the lens 2 can be installed by embedded installation or by fixing with a pressure ring 3.

[0068] By adopting the above technical solution, the lens 2 is fixed.

[0069] In one embodiment, a second fixing groove 12 is disposed on the inner wall of the lens barrel 1 . The second fixing groove 12 is located on one side of the first fixing groove 11 in the axial direction. The pressing ring 3 is disposed in the second fixing groove 12 .

[0070] Here, it can be understood that the shape and size of the second fixing groove 12 match the shape and size of the pressing ring 3, so that the pressing ring 3 can be just placed in the second fixing groove 12; the pressing ring 3 is used to fix the lens 2 in the first fixing groove 11.

[0071] By adopting the above technical solution, the fixing of the pressure ring 3 and the lens 2 is achieved.

[0072] In one embodiment, a third fixing groove 13 is disposed on the inner wall of the lens barrel 1 . The third fixing groove 13 is located on a side of the second fixing groove 12 away from the first fixing groove 11 . The diaphragm 4 is disposed in the third fixing groove 13 .

[0073] Here, it can be understood that the shape and size of the third fixing groove 13 match the shape and size of the diaphragm 4 , so that the diaphragm 4 can be just placed in the third fixing groove 13 .

[0074] By adopting the above technical solution, the diaphragm 4 is fixed.

[0075] In one embodiment, the lens barrel 1 , the pressure ring 3 and the diaphragm 4 are coaxially arranged.

[0076] Here, it can be understood that the lens barrel 1, the pressure ring 3 and the aperture 4 are arranged based on the same axis, that is, the cavity formed inside the lens barrel 1, the first light hole 31 of the pressure ring 3 and the second light hole 41 of the aperture 4 are arranged based on the same axis.

[0077] By adopting the above technical solution, the installation of the lens barrel 1, the pressure ring 3 and the diaphragm 4 is facilitated.

[0078] In a second aspect, an optical lens is provided, comprising an optical lens body and the above-mentioned lens structure, wherein the lens structure is mounted on the optical lens body.

[0079] By adopting the above technical solution, on the basis of having the advantages of the lens structure of the above embodiment, the optical lens of this embodiment also has the advantages of low manufacturing cost and less possibility of starburst.

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lens structure, characterized in that: include: A lens barrel, a lens arranged inside the lens barrel, a pressure ring and an aperture; wherein the pressure ring is arranged inside the lens barrel and stacked with the lens, the pressure ring is provided with a first light hole, and the first light hole is a standard circular hole; the aperture is arranged inside the lens barrel and stacked with the pressure ring, the aperture and the pressure ring are located on the same side of the lens, the aperture can form a second light hole, the second light hole is coaxially arranged with the first light hole, the aperture of the second light hole is adjustable, and the maximum aperture of the second light hole is greater than the aperture of the first light hole.

2. The lens structure according to claim 1, characterized in that: The aperture of the first light hole is A, and the maximum aperture of the second light hole is A+B, where the value range of B is (0.1mm-0.5mm).

3. The lens structure according to claim 1, characterized in that: The value of B is 0.4 mm.

4. The lens structure according to claim 1, characterized in that: The lens structure includes a plurality of pressing rings, the aperture of the first light hole of each pressing ring is different, and the plurality of pressing rings are selectively installed in the lens barrel.

5. The lens structure according to claim 1, characterized in that: The aperture includes an aperture base and a plurality of aperture blades arranged in sequence along the circumference of the aperture base, each of the aperture blades is connected to the aperture base axis, the plurality of aperture blades can enclose to form the second light hole, and the plurality of aperture blades can rotate around the axis to make the aperture of the second light hole adjustable.

6. The lens structure according to any one of claims 1 to 5, characterized in that: The inner wall of the lens barrel is provided with a first fixing groove, and the lens is arranged in the first fixing groove.

7. The lens structure according to claim 6, characterized in that: The inner wall of the lens barrel is provided with a second fixing groove, the second fixing groove is located on one side of the first fixing groove in the axial direction, and the pressing ring is arranged in the second fixing groove.

8. The lens structure according to claim 7, characterized in that: A third fixing groove is provided on the inner wall of the lens barrel. The third fixing groove is located on a side of the second fixing groove away from the first fixing groove. The diaphragm is provided in the third fixing groove.

9. The lens structure according to any one of claims 1 to 5, characterized in that: The lens barrel, the pressure ring and the aperture are coaxially arranged.

10. An optical lens, characterized in that: It comprises an optical lens body and the lens structure according to any one of claims 1 to 9, wherein the lens structure is mounted on the optical lens body.

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