Lens gasket and lens

Abstract

The utility model belongs to the technical field of optical lenses, and discloses a lens gasket and a lens, the middle part of the lens gasket is provided with a light through hole, the inner wall of the light through hole is provided with a plurality of reflecting surfaces, each reflecting surface at least faces two other reflecting surfaces, and the reflecting surfaces are used for reflecting stray light to the other reflecting surfaces. The plurality of reflecting surfaces are arranged on the inner wall of the light through hole of the lens gasket, the reflecting surfaces are used for reflecting stray light for many times, the light ray capability of the stray light is weakened, the problem caused by the stray light is solved, and the imaging quality of the lens is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical lenses, in particular to a lens gasket and a lens. Background Art

[0002] When some light is reflected and refracted on key components such as lenses and aperture blades, it will cause stray light, which will lead to poor image quality. Currently, most ways to eliminate stray light are to improve key components such as lenses and aperture blades, such as coating them with multi-layer coating technology or improving the structure of key components.

[0003] Coating or improving the structure of key components such as lenses and aperture blades will lead to a significant increase in costs. In order to reduce costs and improve stray light, a few manufacturers have improved gaskets. The production cost of gaskets is low and they are easy to obtain. For example, the mobile phone lens with application number CN201420530464.9 improves stray light in real shots. The inner hole end of the gasket is chamfered so that the stray light reflected by the lens cannot be reflected twice on the inner hole wall of the gasket. However, the effect of eliminating stray light with such gaskets is currently poor. The lens can not only reflect stray light, but also refract it, so that the stray light has a lot of irradiation paths, and it is difficult to avoid the stray light from being refracted on the inner hole wall of the gasket. Utility Model Content

[0004] The purpose of the utility model is to provide a lens gasket and a lens, wherein a plurality of reflecting surfaces are arranged on the inner wall of the light through hole of the lens gasket, and the reflecting surfaces are utilized to reflect stray light multiple times, thereby weakening the light capacity of the stray light, improving the problems caused by the stray light, and improving the imaging quality of the lens.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] In a first aspect, a lens gasket is provided, wherein a light through hole is provided in the middle of the lens gasket, and an inner wall of the light through hole has a plurality of reflective surfaces, each of the reflective surfaces faces at least two other reflective surfaces, and the reflective surfaces are used to reflect stray light onto the other reflective surfaces.

[0007] As an optional technical solution, the reflecting surface is a curved surface.

[0008] As an optional technical solution, the reflecting surface is a plane.

[0009] As an optional technical solution, the reflecting surface is arranged parallel to the central axis of the light through hole.

[0010] As an optional technical solution, the inner wall of the light through hole has a plurality of reflective parts, and the plurality of reflective parts are sequentially distributed around the central axis of the light through hole, and each of the reflective parts has two reflective surfaces that are away from each other.

[0011] As an optional technical solution, in the same reflecting portion, the two reflecting surfaces intersect, and an angle between the two reflecting surfaces is 110° to 130°.

[0012] As an optional technical solution, between two adjacent reflecting parts, two adjacent reflecting surfaces intersect, and an angle between the two reflecting surfaces is 110° to 130°.

[0013] As an optional technical solution, in the same reflecting portion, the intersection line of the two reflecting surfaces is a first intersection line, the first intersection line is parallel to the central axis of the light through hole, and the first intersection line of each reflecting portion to the central axis of the light through hole is a first preset value;

[0014] Between two adjacent reflecting parts, the intersection line of the two adjacent reflecting surfaces is a second intersection line, the second intersection line is parallel to the central axis of the light through hole, and the distance from each of the second intersection lines to the central axis of the light through hole is a second preset value;

[0015] The second preset value is 0.1 mm to 0.15 mm greater than the first preset value.

[0016] As an optional technical solution, a first notch and a second notch are provided on the periphery of the lens gasket, and the first notch and the second notch are not symmetrical about a radial extension line of the lens gasket.

[0017] In a second aspect, a lens is provided, comprising at least two lenses, a lens barrel, and the lens gasket as described above, wherein the lenses and the lens gasket are both arranged inside the lens barrel, and the lens gasket is arranged between two adjacent lenses.

[0018] Beneficial effects of the utility model:

[0019] The utility model provides a lens gasket and a lens. A light through hole is provided in the middle of the lens gasket. The inner wall of the light through hole has a plurality of reflective surfaces. Each reflective surface faces at least two other reflective surfaces. The reflective surface is used to reflect stray light onto the other reflective surfaces. In the lens, the lens gasket is located between two adjacent lenses. When stray light passes through the lenses, the stray light is refracted or reflected to form a plurality of irradiation paths. The stray light of different irradiation paths is irradiated onto the reflective surfaces at different positions of the lens gasket. The reflective surface reflects the stray light onto the other reflective surfaces. After the stray light is reflected multiple times by the reflective surfaces, the light energy is weakened, the problem caused by the stray light is improved, and the imaging quality of the lens is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the lens gasket of the utility model;

[0021] Figure 2 yes Figure 1 A partial enlarged view of position A in the middle;

[0022] Figure 3 It is a partial structural exploded diagram of the lens of the utility model.

[0023] In the figure:

[0024] 100, lens gasket; 200, lens; 300, lens barrel;

[0025] 11. Light through hole;

[0026] 12. reflecting portion; 121. reflecting surface; 122. first intersection line;

[0027] 13. The second intersection line;

[0028] 14. The first gap;

[0029] 15. The second gap. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0034] like Figure 3 As shown, this embodiment provides a lens, including at least two lenses 200 , a lens barrel 300 and a lens gasket 100 . The lenses 200 and the lens gasket 100 are both arranged inside the lens barrel 300 , and the lens gasket 100 is arranged between two adjacent lenses 200 .

[0035] like Figure 1 and Figure 2 As shown, this embodiment provides a lens gasket 100, a light through hole 11 is provided in the middle of the lens gasket 100, the inner wall of the light through hole 11 has a plurality of reflective surfaces 121, each reflective surface 121 faces at least two other reflective surfaces 121, and the reflective surfaces 121 are used to reflect stray light onto the other reflective surfaces 121.

[0036] Specifically, in the lens, the lens gasket 100 is located between two adjacent lenses 200. When stray light passes through the lenses 200, the stray light is refracted or reflected to form multiple illumination paths. The stray light of different illumination paths is irradiated onto the reflection surfaces 121 at different positions of the lens gasket 100. The reflection surface 121 reflects the stray light onto another reflection surface 121. After the stray light is reflected multiple times by the reflection surface 121, the light energy is weakened, thereby improving the problem caused by the stray light and thus improving the imaging quality of the lens.

[0037] Compared with the lens 200 , the lens gasket 100 is cheaper and has a simpler processing procedure. The lens gasket 100 having a plurality of reflective surfaces 121 can be obtained by directly stamping.

[0038] In some other embodiments, the reflective surface 121 is a curved surface. The curved reflective surface 121 can not only reflect stray light to another reflective surface 121, but also reflect part of the stray light to its own surface when the curvature and size of the reflective surface 121 reach a certain degree.

[0039] In this embodiment, the reflective surface 121 is a plane. The plane-shaped reflective surface 121 can reflect stray light to the reflective surface 121 it faces, and since each reflective surface 121 faces at least two other reflective surfaces 121, the stray light is reflected back and forth between the multiple reflective surfaces 121, and the light capacity is weakened until it is eliminated.

[0040] In this embodiment, the reflective surface 121 is arranged parallel to the central axis of the light passage 11, that is, the reflective surface 121 is perpendicular to the end face of the lens gasket 100. When the lens gasket 100 is produced, the reflective surface 121 can be formed by directly stamping and removing the material in the middle along the thickness direction of the lens gasket 100. The process difficulty is relatively low. Each reflective surface 121 is perpendicular to the end face of the lens gasket 100. The reflective surface 121 has a better reflection effect on stray light, and the stray light is reflected more times between the reflective surfaces 121, and the light capacity is weakened to a greater extent.

[0041] In some other embodiments, the extending plane where the reflecting surface 121 is located is arranged at an angle with the central axis of the light through hole 11 , that is, the reflecting surface 121 is in an inclined state.

[0042] In this embodiment, the inner wall of the light through hole 11 has a plurality of reflective portions 12 , and the plurality of reflective portions 12 are sequentially distributed around the central axis of the light through hole 11 , and each reflective portion 12 has two reflective surfaces 121 that are away from each other.

[0043] Optionally, in the same reflective portion 12 , two reflective surfaces 121 intersect, and an angle between the two reflective surfaces 121 is 110° to 130°.

[0044] In this embodiment, the angle between the two reflection surfaces 121 of the same reflection portion 12 is 120°, which can achieve a better reflection effect on the other reflection surface 121 .

[0045] Optionally, between two adjacent reflecting portions 12 , two adjacent reflecting surfaces 121 intersect, and an angle between the two reflecting surfaces 121 is 110° to 130°.

[0046] In this embodiment, the included angle between two reflective surfaces 121 between two adjacent reflective portions 12 is 120°.

[0047] In this embodiment, the reflecting portion 12 is a tooth-like structure, and a plurality of tooth-like structures are connected in sequence around the central axis of the light passage 11. The angle between the two reflecting surfaces 121 of each tooth-like structure is 120°. The angle between the two reflecting surfaces 121 that are close to each other between two adjacent tooth-like structures is 120°. When stray light is irradiated onto one of the reflecting surfaces 121 of a certain tooth-like structure, the reflecting surface 121 reflects the stray light once to the reflecting surfaces 121 of at least two other tooth-like structures, and the reflecting surfaces 121 of at least two other tooth-like structures reflect the stray light twice, and so on. The stray light is reflected multiple times by the reflecting surface 121, and its light capacity is weakened until it is eliminated.

[0048] Optionally, in the same reflective portion 12, the intersection line of the two reflective surfaces 121 is a first intersection line 122, the first intersection line 122 is parallel to the central axis of the light through hole 11, and the first intersection line 122 of each reflective portion 12 to the central axis of the light through hole 11 is a first preset value. The shape and size of each tooth structure are the same, and the consistency is maintained to avoid affecting the irradiation of normal light.

[0049] Optionally, between two adjacent reflecting portions 12, the intersection line of two adjacent reflecting surfaces 121 is a second intersection line 13, the second intersection line 13 is parallel to the central axis of the light through hole 11, and the distance from each second intersection line 13 to the central axis of the light through hole 11 is a second preset value. In this embodiment, the roots of two adjacent tooth-like structures intersect and the intersection line is the second intersection line 13, so that the number of tooth-like structures is guaranteed within the effective space, thereby increasing the number of stray light reflections.

[0050] In this embodiment, the second preset value is 0.1 mm to 0.15 mm greater than the first preset value. In this embodiment, the difference between the radius of the second intersection line 13 and the radius of the first intersection line 122 is controlled between 0.1 mm and 0.15 mm, and the angle between two adjacent reflection surfaces 121 is controlled between 110° and 130°, thereby determining the shape and size of the toothed structure, maintaining consistency, and improving the effect of eliminating stray light.

[0051] Optionally, a first notch 14 and a second notch 15 are provided on the periphery of the lens gasket 100 , and the first notch 14 and the second notch 15 are not symmetrical about a radial extension line of the lens gasket 100 .

[0052] The number of lens gaskets 100 between two adjacent lenses 200 is fixed. In the present embodiment, only one lens gasket 100 is required between two adjacent lenses 200. The present embodiment utilizes the difference between the first notch 14 and the second notch 15 to distinguish whether the lens gasket 100 is arranged on the front or back, and to identify whether there are multiple lens gaskets 100 attached together, thereby playing an anti-foolproof role. Moreover, since the first notch 14 and the second notch 15 are both located on the periphery of the lens gasket 100, compared with the solution of setting the identification feature on the end face of the lens gasket 100, the first notch 14 and the second notch 15 of the present embodiment do not affect the supporting performance of the lens gasket 100, prevent collapse or bulge, and light does not need to pass through the periphery of the lens gasket 100, therefore, the imaging quality of the lens is not affected.

[0053] In this embodiment, the first notch 14 is a triangular notch, and the second notch 15 is a semicircular notch.

[0054] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A lens spacer, characterized in that: A light through hole (11) is provided in the middle of the lens gasket (100), and the inner wall of the light through hole (11) has a plurality of reflection surfaces (121), each of the reflection surfaces (121) faces at least two other reflection surfaces (121), and the reflection surfaces (121) are used to reflect stray light onto the other reflection surfaces (121).

2. The lens spacer according to claim 1, characterized in that: The reflecting surface (121) is a curved surface.

3. The lens spacer according to claim 1, characterized in that: The reflecting surface (121) is a plane.

4. The lens spacer according to claim 3, characterized in that: The reflecting surface (121) is arranged parallel to the central axis of the light through hole (11).

5. The lens spacer according to claim 4, characterized in that: The inner wall of the light through hole (11) has a plurality of reflecting parts (12), the plurality of reflecting parts (12) are sequentially distributed around the central axis of the light through hole (11), and each of the reflecting parts (12) has two reflecting surfaces (121) that are separated from each other.

6. The lens spacer according to claim 5, characterized in that: In the same reflecting portion (12), the two reflecting surfaces (121) intersect, and the angle between the two reflecting surfaces (121) is 110° to 130°.

7. The lens spacer according to claim 6, characterized in that: Between two adjacent reflecting portions (12), two adjacent reflecting surfaces (121) intersect, and the angle between the two reflecting surfaces (121) is 110° to 130°.

8. The lens spacer according to claim 7, characterized in that: In the same reflecting portion (12), the intersection line of the two reflecting surfaces (121) is a first intersection line (122), the first intersection line (122) is parallel to the central axis of the light through hole (11), and the distance from the first intersection line (122) of each reflecting portion (12) to the central axis of the light through hole (11) is a first preset value; Between two adjacent reflecting portions (12), the intersection line of the two adjacent reflecting surfaces (121) is a second intersection line (13), the second intersection line (13) is parallel to the central axis of the light through hole (11), and the distance from each of the second intersection lines (13) to the central axis of the light through hole (11) is a second preset value; The second preset value is 0.1 mm to 0.15 mm greater than the first preset value.

9. The lens spacer according to claim 8, characterized in that: A first notch (14) and a second notch (15) are provided on the periphery of the lens gasket (100); the first notch (14) and the second notch (15) are not symmetrical about a radial extension line of the lens gasket (100).

10. A lens, characterized in that The invention comprises at least two lenses (200), a lens barrel (300), and a lens gasket (100) as described in any one of claims 1 to 9, wherein the lenses (200) and the lens gasket (100) are both arranged inside the lens barrel (300), and the lens gasket (100) is arranged between two adjacent lenses (200).

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