CN217385938U - Optical imaging lens and electronic device - Google Patents

Abstract

The utility model relates to an optical imaging camera lens and electron device, including lens cone and a plurality of lens, the lens cone include the lens cone inner wall with the chamber is acceptd in that the lens cone inner wall formed, it follows to accept chamber cross-section diameter the object end to the image end crescent of lens cone, be provided with two at least cyclic annular shoulder holes on the inner wall, the shoulder hole is followed the image end and is held the setting to the object, the shoulder hole satisfies following relation at the high Rx and the object end aperture R of perpendicular optical axis direction: Rx/R is not less than 0.2. The utility model discloses, can the adjacent great poor camera lens of big section of lens bore difference of adaptation, satisfy the demand of the high resolving power of camera lens, improve the unstable problem of the poor optical imaging camera lens assembly of big section, improve the equipment stability of camera lens, and then show the production yields that promotes the camera lens.

Description

Optical imaging lens and electronic device

Technical Field

The utility model relates to an optical element technical field, concretely relates to optical imaging lens and electron device.

Background

Along with the development of imaging products towards the direction of integrating, facilitating, require rather than assorted imaging lens under the prerequisite of guaranteeing the formation of image quality, the camera lens overall height is as little as possible to reduce the space of whole imaging module and compare. Meanwhile, for a main camera mounted on a digital product such as a mobile phone, a large-image-plane and high-pixel imaging technology is becoming one of the core battlefields for each terminal manufacturer to compete.

In order to match with the requirements of a larger image plane and a smaller lens height, attention needs to be paid to TTL Ratio which is TTL/H, where TTL is the lens length and H is the diagonal size of a chip, and when the TTL Ratio is smaller, the design and manufacturing difficulty is higher, and a lens with a larger aperture difference between adjacent lenses is often required to be designed to meet the requirement of high resolution of the lens, and the difference between the apertures of the adjacent lenses is obviously larger than the difference between the apertures of the adjacent lenses of a conventional lens, which is called as a large-step-difference lens.

However, in the prior art, the problem of low yield after assembly generally exists in the large-section-difference lens.

Disclosure of Invention

An object of the utility model is to provide an optical imaging camera lens and electron device to realize improving lens equipment stability, promote the purpose of camera lens production yields.

In order to realize the above object, the utility model provides an optical imaging lens, including lens cone and a plurality of lens, the lens cone include the lens cone inner wall with the chamber is acceptd in that the lens cone inner wall formed, it follows to accept chamber cross-section diameter the object end to the image end crescent of lens cone is followed image end to the object end be provided with two at least cyclic annular shoulder holes on the inner wall, the shoulder hole satisfies following relation at the high Rx and the object end aperture R of perpendicular optical axis direction: Rx/R is not less than 0.2.

In any one of the above technical schemes, a guide structure is arranged between two adjacent stepped holes, a guide angle α of the guide structure is equal to or larger than 30 degrees and equal to or smaller than 60 degrees, and a projection length m of the guide structure in the optical axis direction is equal to or larger than 0.05 mm.

In any of the above technical solutions, the heights of the plurality of stepped holes in the direction perpendicular to the optical axis gradually decrease from the object end to the image end of the lens barrel.

In any of the above technical solutions, the lens barrel is made of plastic material and is manufactured by integral injection molding.

In any of the above technical solutions, the maximum thickness g and the minimum thickness f of the lens barrel at the position of the stepped hole satisfy the following relationship: g/f is more than or equal to 1 and less than or equal to 2.5.

In any one of the above technical solutions, the plurality of lenses are disposed in the accommodating cavity at intervals along an axial direction of the lens barrel, and the optical imaging lens further includes:

at least one spacer ring disposed between two adjacent lenses;

and the shading elements are arranged between two adjacent lenses at intervals along the axial direction of the lens barrel.

In any of the above technical solutions, an axial gap b between a first optical element disposed in the stepped hole and the corresponding stepped hole satisfies 0 < b < 0.02mm, and the optical element is the spacer or the shading element or the lens.

In any of the above technical solutions, the thickness th of the spacer satisfies the following relationship: th is more than 0.15 mm.

In any of the above technical solutions, the following relationship is satisfied between the maximum ring width L of the spacer and the height Rx of the stepped hole in the direction perpendicular to the optical axis: L-Rx is more than or equal to 0.08 mm.

In any of the above technical solutions, the step hole width is smaller than the thickness at the edge of the lens, and a difference e between the step hole width and the thickness at the edge of the lens satisfies the following relationship: e is more than or equal to 0.01mm and less than or equal to 0.5 mm.

In any of the above technical solutions, the number n of lenses satisfies the following relationship: n is more than or equal to 3.

According to another aspect of the present invention, the present invention provides an electronic device, including:

the optical imaging lens according to any one of the above technical solutions; and

and the electronic photosensitive element is arranged on the imaging surface of the optical imaging lens.

Compared with the prior art, the utility model discloses an optical imaging camera lens and electron device, including lens cone and a plurality of lens, the lens cone include the lens cone inner wall with the chamber is acceptd in lens cone inner wall formation, it follows to accept chamber cross-section diameter the object end to the image end crescent of lens cone, be provided with two at least cyclic annular shoulder holes on the inner wall, the shoulder hole is followed the image end and is held the setting to the object, the shoulder hole satisfies following relation at the high Rx of perpendicular optical axis direction and object end aperture R: Rx/R is not less than 0.2. The utility model discloses, through setting up the shoulder hole along image end to object end at the lens cone inner wall, the shoulder hole is equivalent to the supplementary of lens and holds by the structure, set up the shoulder hole at the high Rx of perpendicular optical axis direction and the relation of object end aperture R to Rx/R and be greater than or equal to 0.2, it is poor to form the big section on the lens cone inner wall, can adapt the great big poor camera lens of big section of adjacent lens bore difference, satisfy the demand of the high resolving power of camera lens, the unstable problem of big poor optical imaging camera lens assembly of section has been improved, improve the equipment stability of camera lens, and then show the production yields that promotes the camera lens.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a sectional view schematically showing an optical imaging lens according to an embodiment of the present invention;

fig. 2 is a sectional view schematically showing a lens barrel structure of an optical imaging lens according to an embodiment of the present invention;

FIG. 3 schematically illustrates a partial block diagram of FIG. 1 in accordance with the present invention;

fig. 4 is a sectional view schematically showing an optical imaging lens according to an embodiment of the present invention;

fig. 5 schematically shows a partial structure view of fig. 1 of the present invention;

fig. 6 schematically shows a cross-sectional view of an optical imaging lens according to an embodiment of the present invention;

fig. 7 schematically shows a cross-sectional view of an optical imaging lens according to another embodiment of the present invention;

fig. 8 is a cross-sectional view schematically showing an optical imaging lens according to still another embodiment of the present invention;

fig. 9 is a cross-sectional view schematically showing an optical imaging lens according to still another embodiment of the present invention;

fig. 10 is a cross-sectional view schematically showing an optical imaging lens according to still another embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 10 is:

10. a lens barrel; 20. a lens; 30. a stepped hole; 31. a first stepped hole; 32. a second stepped bore; 40. a guide structure; 50. a space ring; 60. a shading element.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

In describing embodiments of the present invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer" are used in an orientation or positional relationship that is based on the orientation or positional relationship shown in the associated drawings for ease of description and simplicity of description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the invention.

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments, which are not repeated herein, but the present invention is not limited to the following embodiments.

Referring to fig. 1 and 2, the utility model discloses an optical imaging lens, including lens cone 10 and a plurality of lens 20, lens cone 10 includes that lens cone inner wall and lens cone inner wall form accept the chamber, accepts the chamber cross-sectional diameter and holds to the image end crescent along the object of lens cone 10, is provided with two at least cyclic annular shoulder holes 30 on the inner wall, and a plurality of shoulder holes 30 are followed the image and held to the object and are set up, and shoulder hole 30 satisfies following relation at the high Rx and the object end aperture R of perpendicular optical axis direction: Rx/R is not less than 0.2.

In this embodiment, the stepped hole 30 is arranged along the image end to the object end on the inner wall of the lens barrel, the stepped hole 30 is equivalent to an auxiliary bearing structure of the lens 20, the relationship between the height Rx of the stepped hole 30 in the direction perpendicular to the optical axis and the aperture R of the object end is set to Rx/R not less than 0.2, a large-section difference is formed on the inner wall of the lens barrel, and the large-section difference lens can be adapted to a large-section difference lens with a large aperture difference of adjacent lenses 20, so that the requirement of high resolving power of the lens is met, the problem of unstable assembly of the large-section difference optical imaging lens is solved, the assembly stability of the lens is improved, and the production yield of the lens is obviously improved.

Specifically, in order to ensure high resolution of the lens, the apertures of adjacent lenses of the lens are often designed to have a large difference, and when the height Rx of the stepped hole 30 in the direction perpendicular to the optical axis and the aperture R of the object end satisfy the relationship that Rx/R is not less than 0.2, it is determined that the lens barrel 10 has a large step, and the lens barrel 10 having the large step can be adapted to the large-step lens having the large difference in the aperture of the adjacent lens 20, so that the mounting accuracy of the lens 20 and the lens barrel 10 is ensured, and the assembly stability of the lens is improved.

Wherein, the height Rx of the stepped hole 30 in the direction perpendicular to the optical axis generally satisfies: rx is more than or equal to 0.06mm and less than or equal to 5 mm.

As shown in fig. 5, in an embodiment of the present invention, preferably, a guiding structure 40 is disposed between two adjacent stepped holes 30, and a guiding angle of the guiding structure 40 satisfies the following relationship: alpha is more than or equal to 30 degrees and less than or equal to 60 degrees, and the projection length m of the guide structure 40 in the optical axis direction satisfies the following relation: m is more than or equal to 0.05 mm.

In this embodiment, the transition position between two stepped holes 30 is provided with guide structure 40, and guide structure 40 is similar to the chamfer form, can avoid fish tail lens 20 when lens 20 installs, promotes lens stability, reduces the waste material and produces, and reduction in production cost is favorable to the installation of each optical element in the lens.

In an embodiment of the present invention, it is preferable that the heights of the plurality of stepped holes 30 in the direction perpendicular to the optical axis gradually decrease from the object end to the image end of the lens barrel 10.

In this embodiment, the height of the stepped hole 30 in the direction perpendicular to the optical axis is gradually reduced from the object end to the image end of the lens barrel 10, so as to reduce the sensitivity of lens distribution and improve the stability of lens assembly.

As shown in fig. 3, the second stepped hole 32 and the first stepped hole 31 are formed along the lens barrel 10 from the image end to the object end, and the step length a of the first stepped hole 31 satisfies: a is more than or equal to 0.06mm and less than or equal to 5mm, and the step length c of the second stepped hole 32 satisfies: c is more than or equal to 0.06mm and less than or equal to 5mm, wherein a is more than or equal to c.

In an embodiment of the present invention, preferably, the lens barrel 10 is made of plastic material and is manufactured by integral injection molding.

In this embodiment, the lens barrel 10 is manufactured by integral injection molding of a plastic material, so that the thickness of the whole lens barrel 10 needs to be uniform, the molding defects such as sink marks, material shortage and pores are reduced, and the lens barrel is low in cost and convenient to manufacture.

As shown in fig. 4, in an embodiment of the present invention, it is preferable that the maximum thickness g and the minimum thickness f of the lens barrel 10 at the position of the stepped hole 30 satisfy the following relationship: g/f is more than or equal to 1 and less than or equal to 2.5.

As shown in fig. 6 to 8, in an embodiment of the present invention, preferably, the plurality of lenses 20 are disposed in the accommodating cavity at intervals along the axial direction of the lens barrel 10.

In one embodiment of the present invention, at least one spacer ring 50 is preferably included, and the spacer ring 50 is disposed between two adjacent lenses 20.

In this embodiment, the spacer 50 is disposed on the side close to the image side along the axial direction of the lens barrel 10, and the spacer 50 is made of metal, which is beneficial to preventing the problem of high-temperature deformation of the plastic spacer 50, wherein the spacer 50 is bonded to the lens barrel 10 through a glue.

As shown in fig. 3, in an embodiment of the present invention, preferably, the axial gap b between the first optical element disposed in the stepped hole 30 and the corresponding stepped hole satisfies 0 < b ≦ 0.02mm, and the optical element is the spacer 50 or the shading element 60 or the lens 20.

In this embodiment, when the lens scheme is designed, there are gaps between the stepped hole 30 and the lens 20, the spacer 50, and the shading element 60 that are matched with the stepped hole, and the axial gap b satisfies 0 < b ≤ 0.02mm, because of the influence of the thickness of the shading element 60, the vector height of the lens 20, and the like when the lens 20, the spacer 50, and the shading element 60, and the like are machined tolerance and field curvature is adjusted, when the gap amount is left, the lens 20, the spacer 50, the shading element 60, and the like are attached to the wall of the stepped hole during actual assembly, thereby increasing the assembly stability of the lens, which is equivalent to a certain pre-compensation effect.

For example, when the lens barrel is assembled and the lens 20 is directly mounted on the stepped hole 30 without the spacer 50 and the light shielding member 60, the gap between the lens 20 and the stepped hole 30 may be set to 0.01 mm.

For another example, when assembling the lens, the light shielding member 60 is first installed in the stepped hole 30, then the spacer 50 is installed, and when the lens 20 is finally installed, the gap between the lens 20 and the light shielding member 60 may be set to 0.01mm

As shown in fig. 5, in an embodiment of the present invention, the thickness th of the spacer ring 50 preferably satisfies the following relationship: th is more than 0.15 mm.

As shown in fig. 3, in an embodiment of the present invention, it is preferable that the maximum ring width L of the spacer 50 and the height Rx of the stepped hole 30 in the vertical optical axis direction satisfy the following relationship: L-Rx is more than or equal to 0.08mm, which can ensure the smooth assembly of all elements in the lens barrel 10 and improve the lens mounting efficiency.

In an embodiment of the present invention, it is preferable that a plurality of light shielding elements 60 are further included, and the plurality of light shielding elements 60 are disposed between two adjacent lenses 20 at intervals along the axial direction of the lens barrel 10.

In this embodiment, by disposing the light shielding element 60 between the adjacent lenses 20, stray light of the lens barrel 10 is effectively reduced or even eliminated, and the final imaging quality is improved, i.e., the lens performance is improved.

As shown in fig. 6, the first stepped hole 31 and the second stepped hole 32 are both provided with the light shielding member 60 and then with the lens or spacer 50.

As shown in fig. 7, the first stepped hole 31 is first installed with the lens 20, the second stepped hole 32 is first installed with the light shielding member 60, and then both the lens 20 and the spacer 50 are installed.

As shown in fig. 8, the first stepped hole 31 is first provided with the light shielding member 60 and the lens 20, and the second stepped hole 32 is first provided with the spacer 50, then with the light shielding member 60, and then with the lens 20.

In addition, as shown in FIG. 9, the position of the shading element 60 is determined by the dimension of glare reduction and the field of view rays of the image.

As shown in fig. 10, the spacer 50 of the second stepped hole 32 is mounted with the light blocking member 60 at both front and rear thereof.

As shown in fig. 5, in an embodiment of the present invention, preferably, the width of the stepped hole 30 is smaller than the thickness of the edge of the lens 20, and the difference e between the width of the stepped hole 30 and the thickness of the edge of the lens 20 satisfies the following relationship: e is more than or equal to 0.01mm and less than or equal to 0.5 mm.

In this embodiment, the width of the stepped hole 30 is smaller than the thickness of the edge of the lens 20, and when the stepped hole 30 of the lens barrel 10 is completely matched with the lens 20 during lens assembly, a part of the outer cylindrical surface of the lens 20 is exposed outside the inner hole wall of the stepped hole 30 of the lens barrel 10, which is beneficial to avoiding burrs possibly existing in the outer cylindrical direction of the lens 20.

In an embodiment of the present invention, preferably, the number n of lenses 20 satisfies the following relationship: n is more than or equal to 3.

According to another aspect of the present invention, the present invention provides an electronic device, including:

an optical imaging lens according to any one of the above-described embodiments; and

and the electronic photosensitive element is arranged on the imaging surface of the optical imaging lens.

In this embodiment, the above-described electronic apparatus is applied to, but not limited to, an image capturing application in products such as a digital camera, a mobile device, a digital flat panel, a smart television, a monitoring device, and the like, a game console having a motion sensing function, a vehicle camera such as a driving recording system and a rear view camera system, an aerial photography device or a sports photography device, various smart electronic devices, and wearable devices.

The utility model discloses an optical imaging camera lens and electron device, including lens cone and a plurality of lens, the lens cone includes that lens cone inner wall and lens cone inner wall form accept the chamber, accepts the chamber cross-section diameter and increases gradually along the object end to image end of lens cone, is provided with two at least cyclic annular shoulder holes on the inner wall, and the shoulder hole is followed image end to object end setting, and the shoulder hole satisfies following relation at the high Rx and the object end aperture R of perpendicular optical axis direction: Rx/R is not less than 0.2. The utility model discloses, through setting up the shoulder hole along image end to object end at the lens cone inner wall, the shoulder hole is equivalent to the supplementary of lens and holds by the structure, set up the shoulder hole at the high Rx of perpendicular optical axis direction and the relation of object end aperture R to Rx/R and be greater than or equal to 0.2, it is poor to form the big section on the lens cone inner wall, can adapt the great big poor camera lens of big section of adjacent lens bore difference, satisfy the demand of the high resolving power of camera lens, the unstable problem of big poor optical imaging camera lens assembly of section has been improved, improve the equipment stability of camera lens, and then show the production yields that promotes the camera lens.

In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are used broadly and should be construed to include, for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The above description is only an embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. The optical imaging lens comprises a lens barrel (10) and a plurality of lenses (20), and is characterized in that the lens barrel (10) comprises a lens barrel inner wall and an accommodating cavity formed by the lens barrel inner wall, the diameter of the section of the accommodating cavity is gradually increased from an object end to an image end of the lens barrel (10), at least two annular stepped holes (30) are arranged on the inner wall from the image end to the object end, and the height Rx of the stepped hole (30) in the direction perpendicular to the optical axis and the aperture R of the object end meet the following relation: Rx/R is not less than 0.2.

2. The optical imaging lens according to claim 1, characterized in that a guide structure (40) is arranged between two adjacent stepped holes (30), a guide angle α of the guide structure (40) is greater than or equal to 30 ° and less than or equal to 60 °, and a projection length m of the guide structure (40) in the optical axis direction is greater than or equal to m and greater than or equal to 0.05 mm.

3. The optical imaging lens according to claim 1, wherein the heights of the plurality of stepped holes (30) in the direction perpendicular to the optical axis are gradually reduced from the object end to the image end of the lens barrel (10).

4. The optical imaging lens according to claim 1, characterized in that the lens barrel (10) is made of plastic material and is manufactured by integral injection molding.

5. The optical imaging lens according to claim 1, characterized in that the maximum thickness g and the minimum thickness f of the lens barrel (10) at the location of the stepped hole (30) satisfy the following relationship: g/f is more than or equal to 1 and less than or equal to 2.5.

6. The optical imaging lens according to claim 1, characterized in that a plurality of said lenses (20) are arranged in said housing cavity at intervals along an axial direction of said lens barrel (10), said optical imaging lens further comprising:

at least one spacer ring (50), said spacer ring (50) being arranged between two adjacent lenses (20);

a plurality of shading elements (60), wherein the plurality of shading elements (60) are arranged between two adjacent lenses (20) at intervals along the axial direction of the lens barrel (10).

7. Optical imaging lens according to claim 6, characterized in that the axial clearance b between a first optical element arranged in the stepped bore (30) and the corresponding stepped bore satisfies 0 < b ≦ 0.02mm, the optical element being the spacer ring (50) or the shading element (60) or the lens (20).

8. Optical imaging lens according to claim 6, characterized in that the thickness th of the spacer (50) satisfies the following relation: th > 0.15 mm.

9. Optical imaging lens according to claim 6, characterized in that the maximum ring width L of the spacer (50) and the height Rx of the stepped bore (30) in the direction perpendicular to the optical axis satisfy the following relationship: L-Rx is more than or equal to 0.08 mm.

10. Optical imaging lens according to claim 1, characterized in that the width of the stepped hole (30) is smaller than the thickness at the edge of the lens (20), the difference e between the width of the stepped hole (30) and the thickness at the edge of the lens (20) satisfying the following relation: e is more than or equal to 0.01mm and less than or equal to 0.5 mm.

11. Optical imaging lens according to claim 1, characterized in that the number n of lenses (20) satisfies the following relation: n is more than or equal to 3.

12. An electronic device, comprising:

an optical imaging lens according to any one of claims 1 to 11; and

and the electronic photosensitive element is arranged on the imaging surface of the optical imaging lens.

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