CN220381350U - Optical lens - Google Patents

Abstract

The present utility model provides an optical lens comprising: the inner wall surface of the lens barrel is at least provided with a bearing ring surface with a certain included angle with the optical axis of the optical lens, and the included angle between the bearing ring surface and the optical axis is alpha; the plurality of lenses at least comprise matched lenses, the outer ring surfaces of the matched lenses are obliquely arranged relative to the optical axis, the included angle beta=alpha between the outer ring surfaces and the optical axis, and the outer ring surfaces are in bearing contact with the bearing ring surfaces; wherein, the included angle alpha between the bearing ring surface and the optical axis is more than or equal to 1 degree and less than or equal to 5 degrees. The utility model solves the problem of difficult demoulding of the optical lens in the prior art.

Description

Optical lens

Technical Field

The utility model relates to the technical field of optical imaging equipment, in particular to an optical lens

Background

In recent years, with the rapid development of intelligent products, an optical lens for realizing an imaging function in the intelligent products is also becoming one of indispensable elements. In order to improve the imaging quality of the entire optical lens or enrich the variety of lens products, lenses incorporating various types of lens combinations are increasingly being developed. At present, most of conventional lenses are composed of a plurality of plastic lenses, but the yield of the optical lens is greatly reduced due to the problem that the lenses and the lens barrel are difficult to demould during molding.

That is, the optical lens in the prior art has a problem of difficult mold release.

Disclosure of Invention

The utility model mainly aims to provide an optical lens to solve the problem that the optical lens is difficult to demould in the prior art.

In order to achieve the above object, according to one aspect of the present utility model, there is provided an optical lens comprising: the inner wall surface of the lens barrel is at least provided with a bearing ring surface with a certain included angle with the optical axis of the optical lens, and the included angle between the bearing ring surface and the optical axis is alpha; the plurality of lenses at least comprise matched lenses, the outer ring surfaces of the matched lenses are obliquely arranged relative to the optical axis, the included angle beta=alpha between the outer ring surfaces and the optical axis, and the outer ring surfaces are in bearing contact with the bearing ring surfaces; wherein, the included angle alpha between the bearing ring surface and the optical axis is more than or equal to 1 degree and less than or equal to 5 degrees.

Further, the length of the outer annular surface in the direction of the optical axis is 0.07mm or more and 0.20mm or less.

Further, one side of the matched lens close to the lens barrel is also provided with a parting surface, the parting surface is perpendicular to the optical axis, and the parting surface is connected with one end of the outer ring surface, which is far away from the optical axis.

Further, one side of the matched lens close to the lens barrel is also provided with a first drawing die surface, the first drawing die surface is connected with the parting die surface, and the first drawing die surface is obliquely arranged relative to the optical axis.

Further, an included angle between the first drawing surface and the optical axis is more than or equal to 15 degrees and less than or equal to 35 degrees.

Further, the matched lens further comprises a first transition surface, the first transition surface is connected with the first draft surface through a first round corner, and the diameter of the first round corner is greater than or equal to 0.03mm and less than or equal to 0.05mm.

Further, one side of the matched lens close to the lens barrel is also provided with a second die drawing surface, the second die drawing surface is connected with the bearing ring surface, and the second die drawing surface is obliquely arranged relative to the optical axis.

Further, an included angle between the second drawing die surface and the optical axis is more than or equal to 15 degrees and less than or equal to 35 degrees.

Further, the second drawing die surface is connected with the bearing annular surface through a second round angle, and the diameter of the second round angle is more than or equal to 0.03mm and less than or equal to 0.05mm.

Further, the matched lens further comprises a second transition surface, the second transition surface is connected with the second drawing surface through a third round corner, and the diameter of the third round corner is greater than or equal to 0.03mm and less than or equal to 0.05mm.

Further, the length of the bearing ring surface along the optical axis is 0.05mm greater than the length of the outer ring surface along the optical axis.

Further, the length of the bearing ring surface along the direction of the optical axis is more than or equal to 0.09mm and less than or equal to 0.25mm.

Further, the inner wall surface of the lens barrel is at least provided with a third drawing die surface and a fourth drawing die surface, and the third drawing die surface and the fourth drawing die surface are respectively connected with two ends of the bearing ring surface.

Further, the third drawing die surface and the fourth drawing die surface are arranged at an included angle with the optical axis, and the included angle between the third drawing die surface and the optical axis is more than or equal to 45 degrees and less than or equal to 60 degrees; and/or the included angle between the fourth drawing die surface and the optical axis is greater than or equal to 45 degrees and less than or equal to 60 degrees.

Further, the height of the third drawing surface and the fourth drawing surface in the direction perpendicular to the optical axis is 0.05mm or more and 0.15mm or less.

Further, the fit clearance between the outer ring surface and the bearing ring surface is more than or equal to-0.003 mm and less than or equal to 0.005mm.

Further, the outer diameter of the matched lens is more than or equal to 2mm and less than or equal to 10mm.

By applying the technical scheme of the utility model, the optical lens comprises a lens barrel and a plurality of lenses, wherein the inner wall surface of the lens barrel is at least provided with a bearing ring surface which forms a certain included angle with the optical axis of the optical lens, and the included angle between the bearing ring surface and the optical axis is alpha; the plurality of lenses at least comprise matched lenses, the outer ring surface of the matched lenses is obliquely arranged relative to the optical axis, the included angle beta=alpha between the outer ring surface and the optical axis, and the outer ring surface is supported by the supporting ring surface; wherein, the included angle alpha between the bearing ring surface and the optical axis is more than or equal to 1 degree and less than or equal to 5 degrees.

By designing the bearing ring surface on which the lens cone and the matched lens bear to incline for a certain angle relative to the optical axis, the stress between the lens cone and the die is reduced, so that the lens cone is easier to demould during molding, the risk of scratching the lens cone is reduced, and the roundness and coaxiality of the lens cone are improved. Through the outer ring surface design that supports cooperation lens and lens cone be with being certain contained angle, reduced the stress between cooperation lens and the mould for cooperation lens is easy drawing of patterns when the shaping more, has reduced the risk that cooperation lens was scratched. Meanwhile, the inclination angles of the outer ring surface and the bearing ring surface are the same, so that the bearing stability is ensured, meanwhile, the assembly of the matched lens is guided, the optical lens is favorable to reach the optimal assembly state, and the reliability of mechanical type and temperature type is also favorable to be improved. The included angle is limited in the range of 1-5 degrees, so that the bearing stability of the matched lens is ensured, and the demolding difficulty is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a sectional view showing a part of the structure of an optical lens according to a first embodiment of the present utility model;

FIG. 2 shows an enlarged schematic view of the mating lens of section A of FIG. 1;

FIG. 3 shows a partial parametric schematic of the mating lens of portion A of FIG. 1;

fig. 4 shows an enlarged structural schematic view of the lens barrel of the a section in fig. 1;

fig. 5 shows a cross-sectional view of the lens barrel of fig. 1;

FIG. 6 shows a cross-sectional view of the mating lens of FIG. 1;

FIG. 7 shows a schematic view of the configuration of the mating lens of FIG. 1;

fig. 8 shows a cross-sectional view of the optical lens of fig. 1.

Wherein the above figures include the following reference numerals:

10. a lens barrel; 11. a bearing ring surface; 12. a third drawing surface; 13. a fourth drawing surface; 20. matching with a lens; 21. an outer annulus; 22. parting surfaces; 23. a first drawing surface; 24. a first transition surface; 25. a second drawing surface; 26. a second transition surface; 31. a first rounded corner; 32. a second rounded corner; 33. and a third rounded corner.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise indicated.

In the present utility model, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, upright or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present utility model.

In order to solve the problem that the optical lens is difficult to demold in the prior art, the utility model provides an optical lens.

As shown in fig. 1 to 8, the optical lens includes a lens barrel 10 and a plurality of lenses, wherein an inner wall surface of the lens barrel 10 is at least provided with a bearing annular surface 11 forming a certain included angle with an optical axis of the optical lens, and the included angle between the bearing annular surface 11 and the optical axis is alpha; the plurality of lenses at least comprise a matched lens 20, an outer annular surface 21 of the matched lens 20 is obliquely arranged relative to the optical axis, an included angle beta=alpha between the outer annular surface 21 and the optical axis, and the outer annular surface 21 is supported by a supporting annular surface 11; wherein, the included angle between the bearing ring surface 11 and the optical axis is more than or equal to 1 degree and less than or equal to 5 degrees.

By designing the bearing ring surface 11 on which the lens barrel 10 and the matched lens 20 bear to incline for a certain angle relative to the optical axis, the stress between the lens barrel 10 and the die is reduced, so that the lens barrel 10 is easier to demould during molding, the risk of scratching the lens barrel 10 is reduced, and the roundness and coaxiality of the lens barrel 10 are improved. By designing the outer annular surface 21 against which the matched lens 20 and the lens barrel 10 bear to form a certain included angle, the stress between the matched lens 20 and the die is reduced, so that the matched lens 20 is easier to demould during molding, and the risk of scratching the matched lens 20 is reduced. Meanwhile, the inclination angles of the outer ring surface 21 and the bearing ring surface 11 are the same, so that the bearing stability is ensured, meanwhile, the assembly of the matched lens 20 is guided, the optical lens is favorable to achieve the optimal assembly state, and the reliability of mechanical type and temperature type is also favorable to be improved. Limiting the included angle to a range of 1 to 5 reduces the difficulty of demolding while ensuring the bearing stability of the matched lens 20.

Specifically, the length of the outer annular surface 21 along the direction of the optical axis is greater than or equal to 0.07mm and less than or equal to 0.20mm, so that the structural strength of the matched lens 20 is ensured, the thickness design of the structural part of the matched lens 20 is reasonable, and meanwhile, the bearing stability with the lens barrel 10 is ensured.

As shown in fig. 2, the side of the lens 20 close to the lens barrel 10 is further provided with a parting surface 22, the parting surface 22 is perpendicular to the optical axis, and the parting surface 22 is connected with one end of the outer ring surface 21 away from the optical axis. This arrangement ensures that the mating lens 20 can be injection molded through the location of the parting plane 22 while ensuring that the molding conditions are met at all locations on the mold.

The length of the parting plane 22 in the direction perpendicular to the optical axis is usually selected to be 0.01mm.

As shown in fig. 2, the side of the lens 20 near the lens barrel 10 is further provided with a first drawing surface 23, the first drawing surface 23 is connected with the parting surface 22, and the first drawing surface 23 is inclined relative to the optical axis. The setting can reduce the drawing of patterns degree of difficulty like this, effectively guarantees the face type of cooperation lens 20, data such as medium thickness, improves the yield of cooperation lens 20.

Specifically, the included angle between the first drawing surface 23 and the optical axis is 15 ° or more and 35 ° or less. The inclination angle of the first drawing surface 23 is limited in a reasonable range, so that the matched lens 20 can be conveniently opened and closed, and the volume of the matched lens 20 can be conveniently controlled while the matched lens 20 is ensured to be molded.

As shown in fig. 2, the mating lens 20 further includes a first transition surface 24, where the first transition surface 24 and the first drawing surface 23 are connected by a first rounded corner 31, and the diameter of the first rounded corner 31 is greater than or equal to 0.03mm and less than or equal to 0.05mm. The first transition surface 24 and the first drawing surface 23 are connected through the first fillets 31, so that one side of the matched lens 20 facing the lens barrel 10 and one side facing other lenses are in smooth transition, and meanwhile stress at the connecting position is reduced, and demolding is facilitated. The first rounded corners 31 are limited to a reasonable range so as not to excessively affect the shape of the fitting lens 20 while ensuring molding stability.

As shown in fig. 2, the side of the lens 20 near the lens barrel 10 is further provided with a second drawing surface 25, the second drawing surface 25 is connected with the bearing ring surface 11, and the second drawing surface 25 is inclined relative to the optical axis. The first drawing surface 23 is similar to the first drawing surface, so that the demolding difficulty can be reduced, the surface type, medium thickness and other data of the matched lens 20 can be effectively ensured, and the yield of the matched lens 20 can be improved.

Specifically, the included angle between the second drawing surface 25 and the optical axis is 15 ° or more and 35 ° or less. The inclination angle of the second drawing surface 25 is limited in a reasonable range, so that the matched lens 20 can be conveniently opened and closed, and the volume of the matched lens 20 can be conveniently controlled while the matched lens 20 is ensured to be molded.

As shown in fig. 2, the second drawing surface 25 and the bearing ring surface 11 are connected by a second round corner 32, and the diameter of the second round corner 32 is greater than or equal to 0.03mm and less than or equal to 0.05mm. The stress at the joint is reduced, and the demolding is facilitated. The second rounded corners 32 are limited to a reasonable extent so as to ensure molding stability without unduly affecting the shape of the mating lens 20.

As shown in fig. 2, the mating lens 20 further includes a second transition surface 26, the second transition surface 26 and the second drawing surface 25 are connected by a third rounded corner 33, and the diameter of the third rounded corner 33 is greater than or equal to 0.03mm and less than or equal to 0.05mm. So that the side of the matched lens 20 facing the lens barrel 10 and the side facing other lenses are in smooth transition, and the stress at the joint is reduced, thereby facilitating demolding. The third rounded corner 33 is limited to a reasonable range so as not to excessively affect the shape of the fitting lens 20 while ensuring molding stability.

Specifically, the length of the bearing ring surface 11 along the optical axis is 0.05mm greater than the length of the outer ring surface 21 along the optical axis, so as to play a guiding role in assembling the matched lens 20.

Specifically, the length of the bearing ring surface 11 along the direction of the optical axis is greater than or equal to 0.09mm and less than or equal to 0.25mm, so that the bearing stability of the matched lens 20 is ensured and the structural strength of the lens barrel 10 is ensured.

As shown in fig. 4, the inner wall surface of the lens barrel 10 has at least a third drawing surface 12 and a fourth drawing surface 13, and the third drawing surface 12 and the fourth drawing surface 13 are respectively connected with two ends of the bearing ring surface 11. The third and fourth drawing surfaces 12 and 13 are disposed at an angle to the optical axis. The arrangement is convenient for demoulding the lens barrel 10, and can also prevent the lens barrel 10 from being damaged by pulling and effectively improve the forming of the lens barrel 10.

Specifically, the included angle between the third drawing surface 12 and the optical axis is greater than or equal to 45 ° and less than or equal to 60 °.

Specifically, the included angle between the fourth drawing surface 13 and the optical axis is greater than or equal to 45 ° and less than or equal to 60 °.

Specifically, the height of the third drawing surface 12 and the fourth drawing surface 13 in the direction perpendicular to the optical axis is 0.05mm or more and 0.15mm or less.

Specifically, the fit clearance between the outer annular surface 21 and the bearing annular surface 11 is greater than or equal to-0.003 mm and less than or equal to 0.005mm, so that the fit between the fit lens 20 and the lens barrel 10 reaches the optimal design while the bearing stability is ensured.

Specifically, the outer diameter of the matched lens 20 is greater than or equal to 2mm and less than or equal to 10mm, so that the design of the matched lens 20 is enriched while the molding and assembling requirements are met.

Example 1

As shown in fig. 1 to 8, β=α=3°. By controlling the mold processing, molding conditions and tolerance control of the lens 20 and the lens barrel 10, the angles beta and alpha are consistent, and the optimal assembly state of the optical lens can be achieved.

As shown in fig. 5 and 6, since the outer ring surface 21 and the bearing ring surface 11 are annular structures, the angles between the two ends of the lens 20 and the two ends of the lens barrel 10 are 6 ° in the radial direction.

Example two

In a specific embodiment, not shown, the test data of the lens barrel 10 and the mating lens 20 are shown in tables 1 and 2 below. Meanwhile, the table is added with the comparison data when the outer ring surface 21 and the bearing ring surface 11 are parallel to the optical axis (before improvement). The lens cone mold adopts a 1-out 8 structure, and the matched lens mold adopts a 1-out 16 structure (8-hole test is adopted).

TABLE 1

As can be seen from Table 1, the uniformity and roundness and coaxiality of the 8-cavity inner diameter are improved obviously.

TABLE 2

As can be seen from Table 2, the uniformity of the outer diameter of the fitting lens 20 is significantly improved.

By applying the scheme of the application, the abnormal assembly of the optical lens is reduced from 3% to 0.5%, the yield of the model is improved by 10% compared with that of the original scheme, the improvement effect is obvious, and greater benefits can be created for companies.

From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

1. by designing the bearing ring surface 11 on which the lens barrel 10 and the matched lens 20 bear to incline for a certain angle relative to the optical axis, the stress between the lens barrel 10 and the die is reduced, so that the lens barrel 10 is easier to demould during molding, the risk of scratching the lens barrel 10 is reduced, and the roundness and coaxiality of the lens barrel 10 are improved.

2. By designing the outer annular surface 21 against which the matched lens 20 and the lens barrel 10 bear to form a certain included angle, the stress between the matched lens 20 and the die is reduced, so that the matched lens 20 is easier to demould during molding, and the risk of scratching the matched lens 20 is reduced.

3. The inclination angle of the outer ring surface 21 is the same as that of the bearing ring surface 11, so that the bearing stability is ensured, and meanwhile, the assembly of the matched lens 20 is guided, the optical lens is favorable to reach the optimal assembly state, and the reliability of mechanical type and temperature type is also favorable to be improved.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or described herein.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (17)

1. An optical lens, comprising:

the lens barrel (10) is characterized in that at least a bearing ring surface (11) forming a certain included angle with the optical axis of the optical lens is arranged on the inner wall surface of the lens barrel (10), and the included angle between the bearing ring surface (11) and the optical axis is alpha;

the plurality of lenses at least comprise a matched lens (20), wherein an outer annular surface (21) of the matched lens (20) is obliquely arranged relative to the optical axis, an included angle beta=alpha between the outer annular surface (21) and the optical axis is formed, and the outer annular surface (21) is supported against the supporting annular surface (11);

wherein, the included angle between the bearing ring surface (11) and the optical axis is more than or equal to 1 degree and less than or equal to 5 degrees.

2. An optical lens according to claim 1, wherein the length of the outer annular surface (21) in the direction of the optical axis is 0.07mm or more and 0.20mm or less.

3. The optical lens according to claim 1, wherein a side of the mating lens (20) close to the lens barrel (10) is further provided with a parting surface (22), the parting surface (22) is perpendicular to the optical axis, and the parting surface (22) is connected with an end of the outer annular surface (21) away from the optical axis.

4. An optical lens according to claim 3, wherein a side of the mating lens (20) adjacent to the lens barrel (10) is further provided with a first drawing surface (23), the first drawing surface (23) is connected with the parting surface (22), and the first drawing surface (23) is obliquely arranged with respect to the optical axis.

5. An optical lens according to claim 4, wherein the angle between the first drawing surface (23) and the optical axis is 15 ° or more and 35 ° or less.

6. The optical lens according to claim 4, wherein the mating lens (20) further comprises a first transition surface (24), the first transition surface (24) and the first drawing surface (23) are connected by a first rounded corner (31), and a diameter of the first rounded corner (31) is 0.03mm or more and 0.05mm or less.

7. An optical lens according to claim 3, wherein the side of the mating lens (20) adjacent to the lens barrel (10) further has a second drawing surface (25), the second drawing surface (25) is connected to the bearing ring surface (11), and the second drawing surface (25) is disposed obliquely with respect to the optical axis.

8. An optical lens according to claim 7, wherein the angle between the second drawing surface (25) and the optical axis is 15 ° or more and 35 ° or less.

9. The optical lens according to claim 7, wherein the second drawing surface (25) and the bearing ring surface (11) are connected by a second round corner (32), and the diameter of the second round corner (32) is greater than or equal to 0.03mm and less than or equal to 0.05mm.

10. The optical lens according to claim 7, wherein the mating lens (20) further comprises a second transition surface (26), the second transition surface (26) and the second drawing surface (25) being connected by a third rounded corner (33), the third rounded corner (33) having a diameter of 0.03mm or more and 0.05mm or less.

11. Optical lens according to any one of claims 1 to 10, characterized in that the length of the bearing ring surface (11) in the direction of the optical axis is 0.05mm greater than the length of the outer ring surface (21) in the direction of the optical axis.

12. Optical lens according to any one of claims 1 to 10, characterized in that the length of the bearing ring surface (11) in the direction of the optical axis is 0.09mm or more and 0.25mm or less.

13. Optical lens according to any one of claims 1 to 10, characterized in that the inner wall surface of the lens barrel (10) has at least a third (12) and a fourth (13) drawing surface, the third (12) and fourth (13) drawing surfaces being connected to the two ends of the bearing ring surface (11), respectively.

14. The optical lens according to claim 13, characterized in that the third (12) and fourth (13) drawing surfaces are arranged at an angle to the optical axis,

an included angle between the third drawing die surface (12) and the optical axis is more than or equal to 45 degrees and less than or equal to 60 degrees; and/or

And the included angle between the fourth drawing die surface (13) and the optical axis is more than or equal to 45 degrees and less than or equal to 60 degrees.

15. The optical lens according to claim 14, wherein a height of the third drawing surface (12) and the fourth drawing surface (13) in a direction perpendicular to the optical axis is 0.05mm or more and 0.15mm or less.

16. Optical lens according to any one of claims 1 to 10, characterized in that the fit clearance of the outer annular surface (21) and the bearing annular surface (11) is greater than or equal to-0.003 mm and less than or equal to 0.005mm.

17. The optical lens according to any one of claims 1 to 10, wherein the outer diameter of the mating lens (20) is 2mm or more and 10mm or less.