Convex lens and lens

Abstract

The utility model belongs to the technical field of lenses, and discloses a convex lens and a lens, the convex lens comprises a platform ring part, a transition ring part and a convex lens part, the platform ring part comprises two fixed ring surfaces which are oppositely arranged along the axial direction, and the fixed ring surfaces are perpendicular to the axial direction; the transition ring part is arranged on the inner side of the platform ring part and comprises two annular conical surfaces in one-to-one correspondence with the fixed ring surfaces, and the large ends of the annular conical surfaces are connected with inner rings of the corresponding fixed ring surfaces; the convex lens part is arranged on the inner side of the transition ring part and comprises two optical convex surfaces corresponding to the annular conical surfaces in a one-to-one mode, and the edges of the optical convex surfaces are connected with the small ends of the corresponding annular conical surfaces. According to the convex lens provided by the utility model, relatively smooth transition is formed between the corresponding fixed ring surface and the optical convex surface through the annular conical surface, stress concentration is prevented, and the condition of fragmentation between the annular conical surface and the fixed ring surface as well as between the annular conical surface and the optical convex surface is effectively prevented in the centering and edge grinding process of the convex lens.

Description

Technical Field

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

[0002] In order to pursue high assembly yield and stability, a platform is usually provided on the outer periphery of a lens in modern optical lenses, and the platform abuts against a step in a lens barrel.

[0003] In related technologies, the transition between the outer periphery of a convex lens and the platform is relatively abrupt. For example, the plane where the platform abuts against the step in the lens barrel is usually perpendicular to the outer periphery of the lens. During the process of centering and edge grinding of the lens, the outer periphery of the lens is likely to be broken, reducing the product yield. Summary of the Utility Model

[0004] An object of the utility model is to provide a convex lens, which can effectively prevent the occurrence of fragmentation.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] Provide a convex lens, including:

[0007] A platform ring portion, including two fixed ring surfaces arranged oppositely along the axis, and the fixed ring surfaces are perpendicular to the axis;

[0008] A transition ring portion, arranged inside the platform ring portion, including two annular conical surfaces arranged corresponding to the fixed ring surfaces one by one, and the large end of the annular conical surface is connected to the inner ring of the corresponding fixed ring surface;

[0009] A convex lens portion, arranged inside the transition ring portion, including two optical convex surfaces arranged corresponding to the annular conical surfaces one by one, and the edge of the optical convex surface is connected to the small end of the corresponding annular conical surface.

[0010] Optionally, the platform ring portion further includes an outer peripheral surface, and a chamfer is formed between the outer peripheral surface and the fixed ring surface.

[0011] Optionally, the size of the chamfer is C0.1 - C0.5.

[0012] Optionally, the outer peripheral surface and / or the chamfer are / is provided as a matte surface.

[0013] Optionally, the taper α of the annular conical surface is α≥90°.

[0014] Optionally, the fixed ring surface is provided as a matte surface.

[0015] Optionally, the annular conical surface is provided as a matte surface.

[0016] Optionally, a first fillet or a first chamfer is formed between the large end of the annular conical surface and the fixed toroidal surface.

[0017] Optionally, a second fillet or a second chamfer is formed between the small end of the annular conical surface and the optical convex surface.

[0018] Another object of the present invention is to provide a lens, comprising a lens barrel and the convex lens sheet described in any one of the above, and the convex lens sheet is disposed in the lens barrel.

[0019] Advantages of the present invention:

[0020] For the convex lens sheet provided by the present invention, the large end of the corresponding annular conical surface is connected to the inner ring of the fixed toroidal surface, and the small end is connected to the edge of the optical convex surface. That is, a relatively smooth transition is formed between the corresponding fixed toroidal surface and the optical convex surface through the annular conical surface, preventing stress concentration. During the process of centering and edge grinding of the convex lens sheet, the situation of cracking between the annular conical surface and the fixed toroidal surface and between the annular conical surface and the optical convex surface is effectively prevented, and the product yield is effectively improved.

[0021] For the lens provided by the present invention, the convex lens sheet has a high product yield and is stably and reliably fixed in the lens barrel. Description of the Drawings

[0022] Figure 1 is a schematic structural view of the convex lens sheet provided by the present invention.

[0023] In the figure:

[0024] 100, platform ring portion; 110, fixed toroidal surface; 120, outer peripheral surface; 130, chamfer;

[0025] 200, transition ring portion; 210, annular conical surface;

[0026] 300, convex lens portion; 310, optical convex surface. Detailed Embodiments

[0027] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the sake of description, only parts related to the present invention are shown in the drawings, not all structures.

[0028] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include that the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0030] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0031] Refer to Figure 1 As shown, this embodiment further provides a lens, which includes a lens barrel (not shown) and a convex lens sheet, and the convex lens sheet is arranged inside the lens barrel.

[0032] Exemplarily, the material of the convex lens sheet includes but is not limited to glass or resin materials.

[0033] Specifically, the convex lens sheet includes a platform ring portion 100, a transition ring portion 200, and a convex lens portion 300.

[0034] Specifically, the platform ring portion 100 includes two fixing ring surfaces 110 arranged oppositely along the axial direction, and the fixing ring surfaces 110 are perpendicular to the axial direction. Among them, Figure 1 the a direction in is the axial direction. Specifically, the transition ring portion 200 is arranged inside the platform ring portion 100 and includes two annular conical surfaces 210 arranged in one-to-one correspondence with the fixing ring surfaces 110, and the large ends of the annular conical surfaces 210 are connected to the inner rings of the corresponding fixing ring surfaces 110.

[0035] Specifically, the convex lens part 300 is arranged inside the transition ring part 200 and includes two optical convex surfaces 310 arranged in one-to-one correspondence with the annular conical surfaces 210. The edge of the optical convex surface 310 is connected to the small end of the corresponding annular conical surface 210. Among them, the two optical convex surfaces 310 are used for passing imaging light rays. In some embodiments, the curvature of the two optical convex surfaces 310 can be the same, which is convenient for processing. In other embodiments, the curvature of the two optical convex surfaces 310 can also be different, as long as good imaging accuracy is maintained.

[0036] In this embodiment, the large end of the corresponding annular conical surface 210 is connected to the inner ring of the fixed ring surface 110, and the small end is connected to the edge of the optical convex surface 310. That is, through the annular conical surface 210, a relatively smooth transition is formed between the corresponding fixed ring surface 110 and the optical convex surface 310, preventing stress concentration. During the process of centering and edge grinding of the convex lens sheet, it effectively prevents the occurrence of fragmentation between the annular conical surface 210 and the fixed ring surface 110 and between the annular conical surface 210 and the optical convex surface 310, effectively improving the product yield.

[0037] In this embodiment, even if the stress at the connection between the annular conical surface 210 and the fixed ring surface 110 is large, it will not cause the fragmentation of the convex lens sheet. It can be understood that during the process of centering and edge grinding of the convex lens sheet, through the design of the annular conical surface 210, the force exerted by the grinding stone (not shown) on the annular conical surface 210 and the fixed ring surface 110 can be increased to effectively improve the edge grinding efficiency.

[0038] Exemplarily, the taper α of the annular conical surface 210 ≥ 90°, that is, the included angle β between the annular conical surface 210 and the fixed ring surface 110 ≥ 135°. This reduces the sharpness at the connection between the optical convex surface 310 and the annular conical surface 210, and further effectively prevents the occurrence of fragmentation at the connection between the optical convex surface 310 and the annular conical surface 210, effectively improving the edge grinding efficiency.

[0039] Exemplarily, the taper α of the annular conical surface 210 can be 105°, 120° or 135°.

[0040] In this embodiment, through the arrangement of the fixed ring surface 110, the convex lens sheet can be stably and reliably positioned and fixed inside the lens barrel, and the interval control between the convex lens sheet and other adjacent lenses inside the lens barrel can have high precision, which is convenient for the assembly of the lens and has high production efficiency.

[0041] In some embodiments, a stepped surface can be provided inside the lens barrel, and the fixed ring surface 110 abuts against the stepped surface to achieve the positioning and fixing of the convex lens sheet relative to the lens barrel, which is stable and reliable. Among them, the fixed ring surface 110 and the stepped surface can be bonded and fixed by means of dispensing.

[0042] In some other embodiments, a spacer (not shown) can be arranged inside the lens barrel. The fixed annular surface 110 can abut against one end of the spacer to position and fix the convex lens relative to the lens barrel, which is stable and reliable.

[0043] Exemplarily, the fixed annular surface 110 can be set as a frosted surface. Compared with a smooth surface, the surface roughness of the frosted surface is higher, which can effectively increase the friction between the fixed annular surface 110 and the stepped surface or the spacer, making the convex lens more stably and reliably positioned and fixed inside the lens barrel. Optionally, the fixed annular surface 110 can be a 400# frosted surface. Of course, the fixed annular surface 110 can also be set as a frosted surface with other grit sizes, such as 320# or 500#, which is not limited in this application.

[0044] Exemplarily, the annular conical surface 210 can be set as a frosted surface. During the process of centering and edging the convex lens, it can more effectively prevent the occurrence of fragmentation between the annular conical surface 210 and the fixed annular surface 110. Among them, the grit sizes of the annular conical surface 210 and the fixed annular surface 110 can be the same, that is, the annular conical surface 210 and the fixed annular surface 110 can be processed by a special grindstone at one time, effectively improving the edging efficiency. And compared with the step-by-step processing of the annular conical surface 210 and the fixed annular surface 110, it can more effectively prevent the occurrence of fragmentation between the annular conical surface 210 and the fixed annular surface 110. Optionally, the annular conical surface 210 can be a 400# frosted surface. Of course, the annular conical surface 210 can also be set as a frosted surface with other grit sizes, such as 320# or 500#, which is not limited in this application.

[0045] In a feasible implementation manner, a first rounded corner (not shown) or a first chamfer (not shown) is formed between the large end of the annular conical surface 210 and the fixed annular surface 110, so as to form a smoother transition between the annular conical surface 210 and the fixed annular surface 110, prevent stress concentration, and more effectively prevent the occurrence of fragmentation between the annular conical surface 210 and the fixed annular surface 110 during the process of centering and edging the convex lens, improving the product yield.

[0046] In a feasible implementation manner, a second rounded corner (not shown) or a second chamfer (not shown) is formed between the small end of the annular conical surface 210 and the optical convex surface 310, so as to form a smoother transition between the annular conical surface 210 and the optical convex surface 310, prevent stress concentration, and more effectively prevent the occurrence of fragmentation between the annular conical surface 210 and the optical convex surface 310 during the process of centering and edging the convex lens, improving the product yield.

[0047] In this embodiment, the platform ring portion 100 further includes an outer peripheral surface 120, and the outer peripheral surface 120 can contact the inner wall of the lens barrel to ensure good coaxiality between the convex lens and the lens.

[0048] Exemplarily, the outer peripheral surface 120 can be set as a frosted surface, which can more effectively prevent cracking between the outer peripheral surface 120 and the fixed ring surface 110 during the process of centering and edge grinding the convex lens. Among them, the grit sizes of the annular conical surface 210, the fixed ring surface 110, and the outer peripheral surface 120 can be the same, that is, all the annular conical surface 210, the fixed ring surface 110, and the outer peripheral surface 120 can be machined at one time by a special grindstone, effectively improving the edge grinding efficiency. And compared with the step-by-step machining of the outer peripheral surface 120, the annular conical surface 210, and the fixed ring surface 110, it can more effectively prevent cracking between the outer peripheral surface 120 and the fixed ring surface 110, and between the annular conical surface 210 and the fixed ring surface 110. Optionally, the outer peripheral surface 120 can be a 400# frosted surface. Of course, the outer peripheral surface 120 can also be set as a frosted surface with other grit sizes, such as 320# or 500#, which is not limited in this application.

[0049] Exemplarily, the radial section line of the outer peripheral surface 120 includes but is not limited to a straight line or an arc.

[0050] Specifically, a chamfer 130 can be formed between the outer peripheral surface 120 and the fixed ring surface 110, effectively preventing damage to the outer peripheral surface 120 and the fixed ring surface 110 due to bumping. And during the process of centering and edge grinding the convex lens, the setting of the chamfer 130 also effectively prevents the generation of sharp stress at the connection between the outer peripheral surface 120 and the fixed ring surface 110, preventing the convex lens from cracking.

[0051] Exemplarily, the size of the chamfer 130 can be C0.1 - C0.5 to ensure that the fixed ring surface 110 has a large enough area, thereby ensuring good fixing stability of the convex lens relative to the lens barrel and enabling the lens using the convex lens to have stable resolution.

[0052] Exemplarily, the chamfer 130 can be set as a frosted surface to more effectively prevent cracking at the connection between the outer peripheral surface 120 and the fixed ring surface 110. In this embodiment, the chamfer 130 can be machined by a special grindstone during the process of centering and edge grinding the convex lens. Among them, the grit sizes of the annular conical surface 210, the fixed ring surface 110, the chamfer 130, and the outer peripheral surface 120 can be the same, that is, all the annular conical surface 210, the fixed ring surface 110, the chamfer 130, and the outer peripheral surface 120 can be machined at one time by a special grindstone, effectively improving the edge grinding efficiency. Optionally, the chamfer 130 can be a 400# frosted surface. Of course, the chamfer 130 can also be set as a frosted surface with other grit sizes, such as 320# or 500#, which is not limited in this application.

[0053] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present utility model. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A convex lens sheet, characterized in that: include: The platform ring portion (100) comprises two fixed annular surfaces (110) arranged opposite to each other in the axial direction, wherein the fixed annular surfaces (110) are perpendicular to the axial direction; A transition ring portion (200) is arranged on the inner side of the platform ring portion (100), and comprises two annular conical surfaces (210) arranged in one-to-one correspondence with the fixed annular surface (110), and the large ends of the annular conical surfaces (210) are connected to the inner rings of the corresponding fixed annular surfaces (110); The convex lens portion (300) is arranged on the inner side of the transition ring portion (200), and comprises two optical convex surfaces (310) arranged in one-to-one correspondence with the annular conical surfaces (210), and the edges of the optical convex surfaces (310) are connected to the small ends of the corresponding annular conical surfaces (210).

2. The convex lens sheet according to claim 1, characterized in that: The platform ring portion (100) further comprises an outer peripheral surface (120), and a chamfer (130) is formed between the outer peripheral surface (120) and the fixed annular surface (110).

3. The convex lens sheet according to claim 2, characterized in that: The size of the chamfer (130) is C0.1-C0.

5.

4. The convex lens sheet according to claim 2, characterized in that: The outer peripheral surface (120) and / or the chamfer (130) are configured as frosted surfaces.

5. The convex lens sheet according to claim 1, characterized in that: The taper α of the annular conical surface (210) is ≥90°.

6. The convex lens sheet according to claim 1, characterized in that: The fixed annular surface (110) is configured as a frosted surface.

7. The convex lens sheet according to claim 1, characterized in that: The annular conical surface (210) is configured as a frosted surface.

8. The convex lens sheet according to claim 1, characterized in that: A first fillet or a first chamfer is formed between the large end of the annular conical surface (210) and the fixed annular surface (110).

9. The convex lens sheet according to claim 1, characterized in that: A second fillet or a second chamfer is formed between the small end of the annular conical surface (210) and the optical convex surface (310).

10. A lens, characterized in that: The invention comprises a lens barrel and a convex lens sheet as claimed in any one of claims 1 to 9, wherein the convex lens sheet is arranged in the lens barrel.

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