CN206339814U - Camera lens module - Google Patents

Abstract

The utility model provides a lens module, which includes a lens barrel and a lens group arranged in the lens barrel, the lens of the lens group includes an optical part and a bearing part arranged around the optical part, and the lens includes an object The side surface, the image side opposite to the object side, and the connection surface connecting the object side and the image side, the image side of the bearing part includes a first slope and is arranged around the first slope and extends horizontally The object side of the carrying part includes a second plane connected to the optical part, a second slope, and a third plane connected to the connecting surface in sequence along the direction away from the optical part, and the first Two slopes extend from the end of the second plane toward the image side and are connected to the third plane; the lens module further includes a light-shielding sheet covering the third plane, and the light-shielding sheet is connected to the first slope The projections on a plane perpendicular to said optical axis overlap at least partially.

Description

Lens module

【Technical field】

The utility model relates to the field of camera lens technology, in particular to a lens module.

【Background technique】

The lens module is a very important optical component of the photographic imaging device, and its optical performance has a great influence on the image quality. A general lens module mainly includes a lens barrel, a plurality (plural, refers to the number of two or more) lenses and a plurality of spacer components. The lens is arranged inside the lens barrel, and the spacer component can be arranged between the lens barrel and the lens or between two adjacent lenses. Due to installation requirements, the image side of the non-optical part of the lens away from the image side is usually provided with a sloping surface. When the light emitted or reflected by the belt on the object side of the lens module enters the lens barrel, it is easy to fit at the rim The inclined plane generates stray light, and the stray light may radiate to the image plane through the spacer, thereby generating flare or ghost, thereby affecting the image quality.

In the related art, please refer to FIG. 1, a lens module 200 has a lens barrel 201 and a plurality of lenses 202 installed inside the lens barrel 201 along the optical axis, wherein the image side of a certain lens away from the image side is provided with a ridge The oblique surface 2021, in order to eliminate the stray light generated by the oblique surface 2021, passes through the adjacent shading sheet 203 to reach the image plane, by stacking a shading plate 204 on the surface of the shading sheet 203 facing the oblique surface 2021 The stray light generated by the sloping surface 2021 is absorbed to prevent it from passing through the shading sheet 203 to reach the image plane. However, this method has low light absorption and cannot completely eliminate the slant light generated by the sloping surface 2021.

Therefore, it is necessary to provide a new type of lens module to solve the above problems.

【Content of utility model】

The purpose of the utility model is to overcome the above-mentioned technical problems, and provide a lens module that solves the stray light of the sloping surface from the source so that it cannot be emitted from the last lens to reach the image plane, thereby improving the imaging quality.

The technical scheme of the utility model is as follows:

A lens module, comprising a lens barrel and a lens group arranged in the lens barrel, the lens group includes at least one lens with an optical axis, the lens includes an optical part and a bearing part arranged around the optical part , the lens includes an object side, an image side opposite to the object side, and a connecting surface connecting the object side and the image side, wherein the image side of the bearing part includes a first slope and a surrounding surface The first plane is set on the first slope and extends in the horizontal direction, and the object side surface of the bearing part includes a second plane connected to the optical part, a second slope and a second plane connected to the optical part in sequence along the direction away from the optical part. The third plane of the connection surface, the second inclined plane extends from the end of the second plane towards the image side and is connected with the third plane; the lens module further includes a light shield covering the third plane The light-shielding plate at least partially overlaps the projection of the first slope on the plane perpendicular to the optical axis; the lens module also includes a light-shielding plate covering the image side of the bearing part of the lens, and the light-shielding plate The plate abuts against the first plane.

Preferably, the shading plate extends beyond the edge of the first plane in the direction of the optical axis.

Preferably, the width of the third plane is greater than the width of the first plane.

Preferably, the inclination direction of the second slope is the same as that of the first slope.

Preferably, the lens barrel includes a first barrel wall extending horizontally and a second barrel wall bent and extended from the first barrel wall.

Preferably, the number of lenses in the lens group is two, and the direction from the object side to the image side is a first lens and a second lens in sequence, and the image side of the bearing portion of the first lens includes the first slope and In the first plane, the shading plate is interposed between the first tube wall and the bearing portion of the first lens, and the shading sheet is interposed between the bearing portion of the first lens and the first lens. Between the carrying parts of the two lenses.

Preferably, the surface of the first barrel wall facing the image side sequentially includes a first abutting surface extending in the horizontal direction and abutting against the second plane along a direction away from the central axis of the lens barrel; The third inclined surface on which the two inclined surfaces abut and the second abutting surface extending in the horizontal direction, the third inclined surface connects the first abutting surface and the second abutting surface, and the light-shielding sheet is sandwiched between the two abutting surfaces. between the second abutting surface and the third plane.

Preferably, the number of lenses in the lens group is at least two, and the direction from the object side to the image side is a first lens and a second lens in sequence, and the image side of the bearing part of the second lens is provided with the first lens. The inclined surface and the first plane, the shading sheet is sandwiched between the bearing portion of the first lens and the bearing portion of the second lens, and the shading plate abuts against the bearing portion of the second lens.

Preferably, the image side of the carrying part of the first lens includes a fourth plane connected to the optical part and extending in the horizontal direction along a direction away from the optical part, and a first inclined plane abutting against the second inclined plane along the direction away from the optical part. Four slopes and a fifth plane extending in the horizontal direction, the fourth slope extends from the end of the fourth plane toward the image side and is connected to the fifth plane, the fourth plane is connected to the first plane The two planes are arranged in parallel, and the shading sheet is interposed between the third plane and the fifth plane.

Preferably, the lens module further includes a third lens, and the shading plate is interposed between the second lens and the third lens.

Compared with the related art, the lens module provided by the utility model is provided with a light-shielding sheet on the object side of the lens including the first slope on the image side and a light-shielding plate on the image side of the bearing part of the lens, and the light-shielding sheet and the The projections of the first slope on the plane perpendicular to the optical axis are at least partially overlapped, and the light emitted or reflected from the object side of the lens assembly is blocked by the shading sheet from passing through the carrying portion of the lens when entering the lens barrel , thereby avoiding the generation of stray light on the first inclined plane, solving the stray light from the source, and eliminating the stray light produced by the first inclined plane to the greatest extent, thereby improving the imaging quality.

【Description of drawings】

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work, wherein:

FIG. 1 is a schematic structural diagram of a lens module in the related art;

Fig. 2 is a schematic structural view of Embodiment 1 of the lens module provided by the present invention;

FIG. 3 is a schematic structural view of the lens barrel of the lens module shown in FIG. 2;

4 is a schematic structural view of the first lens of the lens module shown in FIG. 2;

Fig. 5 is a schematic structural diagram of Embodiment 2 of the lens module provided by the present invention;

6 is a schematic structural view of the first lens of the lens module shown in FIG. 5;

FIG. 7 is a schematic structural diagram of a second lens of the lens module shown in FIG. 5 .

【detailed description】

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Embodiment one

Please refer to Fig. 2-4 in combination, Fig. 2 is a schematic structural diagram of the first embodiment of the lens module provided by the present invention, Fig. 3 is a schematic structural diagram of the lens barrel of the lens module shown in Fig. 2, and Fig. 4 is a schematic diagram of the lens shown in Fig. 2 Schematic diagram of the structure of the first lens of the module. The lens module 100 includes a lens barrel 1, a lens group 2 disposed in the lens barrel 1, and a shading plate 3 and a shading sheet 4 sandwiched in the lens group 2, and is supported by the shading plate 3 The lens group 2 and adjust the air gap of the lens group 2 .

The lens barrel 1 includes a first barrel wall 10 extending horizontally and a second barrel wall 11 bent and extended from the first barrel wall 10 . Preferably, the second cylinder wall 11 is perpendicular to the first cylinder wall 10 .

The lens group 2 includes at least one lens 20 with an optical axis. In this embodiment, the number of lenses in the lens group 2 is two, and the order from the object side to the image side is the first lens 21 and the second lens. Lens 22. Both the first lens 21 and the second lens 22 include an optical part (not labeled) and a bearing part (not labeled) surrounding the optical part. The first lens 21 and the second lens 22 include an object side (not numbered), an image side (not numbered) opposite to the object side, and a connecting surface (not numbered) connecting the object side and the image side label). The image side of the bearing portion of the first lens 21 includes a first slope 211 and a first plane 212 disposed around the first slope 211 and extending in the horizontal direction. The object side surface of the bearing part of the first lens 21 sequentially includes a second plane 213 connected to the optical part, a second inclined plane 214 and a third plane 215 connected to the connecting plane along the direction away from the optical part. , the second slope 214 extends from the end of the second plane 213 toward the side of the image and connects with the third plane 215, thereby forming a stepped surface. Correspondingly, the first cylinder wall 10 faces The surface on the image side sequentially includes a first abutting surface 101 extending in the horizontal direction and abutting against the second plane 213 , a first abutting surface 101 abutting against the second inclined surface 214 along a direction away from the central axis of the lens barrel 1 . Three slopes 102 and a second abutment surface 103 extending in the horizontal direction, the third slope 102 connects the first abutment surface 101 and the second abutment surface 102, thereby forming a connection with the first lens The stepped surface of 21 matches the stepped surface, so that the two can be fixed against each other. The width of the third plane 215 is greater than the width of the first plane 212 . Preferably, the inclination direction of the second inclined surface 214 is the same as that of the first inclined surface 211, and the inclination angles of the two may be the same or different.

The shading plate 3 is sandwiched between the bearing portion of the first lens 21 and the bearing portion of the second lens 22, abuts against the first plane 212 of the first lens 21 and faces toward the lens. The direction of the optical axis of group 2 extends beyond the edge of said first plane 212 .

The shading sheet 4 is sandwiched between the first cylinder wall 10 and the bearing portion of the first lens 21 , specifically, the shading sheet 4 is sandwiched between the second abutment of the first cylinder wall 10 between the junction surface 103 and the third plane 215 of the first lens 21, and at least partially overlap with the projection of the first slope 211 on a plane perpendicular to the optical axis, which can block the The light emitted or reflected from the object side of group 2 passes through the carrying portion of the first lens 21 when entering the lens barrel 1, thereby avoiding the generation of stray light on the first slope 211, and solving the stray light from the source so that the stray light cannot The light emitted from the second lens 22 reaches the image surface, thereby improving the imaging quality.

Both the shading plate 3 and the shading sheet 4 are hollow annular structures, and more preferably, the central axes of the shading plate 3 and the shading sheet 4 are on the same straight line as the optical axis of the lens group 2 .

Embodiment two

Please refer to Figures 5-7 in combination, Figure 5 is a schematic structural diagram of the second embodiment of the lens module provided by the present invention, Figure 6 is a structural schematic diagram of the first lens of the lens module shown in Figure 5, and Figure 7 is a schematic structural diagram of the first lens of the lens module shown in Figure 5 Schematic diagram of the structure of the second lens of the lens module. The difference between this embodiment and the first embodiment is that the number of lenses in the lens group 2' is three, and the direction from the object side to the image side is the first lens 21', The second lens 22' and the third lens 23', the shading sheet 4' is sandwiched between the bearing part of the first lens 21' and the bearing part of the second lens 22', the shading plate 3 ′ is sandwiched between the carrying portion of the second lens 22 ′ and the carrying portion of the third lens 23 ′.

Specifically, the image side of the bearing part of the second lens 22' includes a first slope 221' and a first plane 222' disposed around the first slope 221' and extending in the horizontal direction. The object side surface of the bearing part of the second lens 22' includes a second plane 223' connected to the optical part, a second slope 224' and a third plane connected to the connecting surface along the direction away from the optical part. The plane 225', the second slope 224' extends from the end of the second plane 223' toward the side of the image and connects with the third plane 225', thereby forming a stepped surface, correspondingly, the The image side of the carrying portion of the first lens 21 ′ includes a fourth plane 211 ′ connected to the optical portion and extending in the horizontal direction along a direction away from the optical portion, and a fourth plane 211 ′ abutting against the second inclined surface 224 ′. The fourth slope 212' and the fifth plane 213' extending in the horizontal direction, the fourth slope 212' extends from the end of the fourth plane 211' towards the image side and is aligned with the fifth plane 213' connected, the fourth plane 211 ′ is set parallel to the second plane 223 ′, thereby forming a stepped surface matching the stepped surface of the second lens 22 ′, so that the two are fixed against each other. The width of the third plane 225' is greater than the width of the first plane 232'. Preferably, the inclination direction of the second inclined surface 224' is the same as that of the first inclined surface 221', and the inclination angles of the two may be the same or different. The light-shielding sheet 4' is sandwiched between the third plane 225' and the fifth plane 213', and it and the first slope 221' are on a plane perpendicular to the optical axis. At least partly overlapping the projection on, the shading plate 3' is sandwiched between the bearing part of the second lens 22' and the bearing part of the third lens 23', and is connected with the bearing part of the second lens 22'. The first plane 222' abuts against and extends beyond the edge of the first plane 222' toward the optical axis of the lens group 2'.

Compared with the related art, the lens module provided by the utility model is provided with a light-shielding plate on the object side of the lens including the first slope on the image side and a light-shielding plate on the image side of the bearing part of the lens, and the light-shielding plate, and The shading sheet at least partially overlaps the projection of the first slope on a plane perpendicular to the optical axis, and the shading sheet blocks the light emitted or reflected from the object side of the lens assembly from passing through the lens barrel. Through the bearing part of the lens, the generation of stray light on the first slope is avoided, the stray light is solved from the source, and the stray light produced by the first slope is eliminated to the greatest extent, thereby improving the imaging quality.

The above descriptions are only examples of the utility model, and are not intended to limit the patent scope of the utility model. Any equivalent structure or equivalent process transformation made by using the utility model specification and accompanying drawings may be directly or indirectly used in other applications. Related technical fields are all included in the patent protection scope of the present utility model in the same way.

Claims (10)

1. A lens module, comprising a lens barrel and a lens group arranged in the lens barrel, the lens group includes at least one lens with an optical axis, the lens includes an optical part and a set around the optical part The bearing part, the lens includes an object side, an image side opposite to the object side, and a connecting surface connecting the object side and the image side, wherein the image side of the bearing part includes a first slope and A first plane arranged around the first slope and extending in the horizontal direction, the object side of the carrying part along the direction away from the optical part sequentially includes a second plane connected to the optical part, a second slope and a connection The third plane of the connection surface, the second inclined plane extends from the end of the second plane towards the image side and is connected to the third plane; The lens module further includes a shading sheet covering the third plane, and the shading sheet at least partially overlaps with a projection of the first slope on a plane perpendicular to the optical axis; The lens module further includes a shading plate covering the image side of the carrying portion of the lens, and the shading plate abuts against the first plane. 2 . The lens module according to claim 1 , wherein the shading plate extends beyond the edge of the first plane in the direction of the optical axis. 3 . 3. The lens module according to claim 2, wherein the width of the third plane is greater than the width of the first plane. 4 . The lens module according to claim 3 , wherein the inclination direction of the second slope is the same as that of the first slope. 5 . The lens module according to claim 2 , wherein the lens barrel comprises a first barrel wall extending horizontally and a second barrel wall bent and extending from the first barrel wall. 6. The lens module according to claim 5, wherein the number of lenses in the lens group is two, and the direction from the object side to the image side is a first lens and a second lens in sequence, the first The image side of the bearing portion of the lens includes the first slope and the first plane, the shading sheet is sandwiched between the first tube wall and the bearing portion of the first lens, and the shading plate is sandwiched It is arranged between the bearing part of the first lens and the bearing part of the second lens. 7. The lens module according to claim 6, characterized in that, the surface of the first barrel wall facing the image side extends in a horizontal direction along a direction away from the central axis of the lens barrel and is parallel to the second barrel wall. a first abutting surface abutting against a plane, a third abutting surface abutting against the second slant, and a second abutting surface extending in the horizontal direction, the third slant connecting the first abutting surface and the The second abutting surface, the light-shielding sheet is sandwiched between the second abutting surface and the third plane. 8. The lens module according to claim 2, wherein the number of lenses in the lens group is at least two, and the direction from the object side to the image side is a first lens and a second lens in sequence, and the second lens is The image side of the bearing part of the second lens is provided with the first slope and the first plane, and the light-shielding sheet is interposed between the bearing part of the first lens and the bearing part of the second lens, so The shading plate abuts against the carrying portion of the second lens. 9. The lens module according to claim 8, characterized in that, the image side of the carrying part of the first lens along the direction away from the optical part sequentially includes The fourth plane, the fourth inclined plane abutting against the second inclined plane, and the fifth plane extending in the horizontal direction, the fourth inclined plane extends from the end of the fourth plane toward the image side and is connected to the The fifth plane is connected, the fourth plane is arranged parallel to the second plane, and the shading sheet is interposed between the third plane and the fifth plane. 10 . The lens module according to claim 9 , further comprising a third lens, and the light shielding plate is interposed between the second lens and the third lens. 11 .