CN107678120B - Lens barrel for camera module and lens module - Google Patents
Lens barrel for camera module and lens module Download PDFInfo
- Publication number
- CN107678120B CN107678120B CN201711154503.4A CN201711154503A CN107678120B CN 107678120 B CN107678120 B CN 107678120B CN 201711154503 A CN201711154503 A CN 201711154503A CN 107678120 B CN107678120 B CN 107678120B
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- lens barrel
- image
- lens
- flange
- image side
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
The invention relates to a lens barrel for an image pickup module and a lens module, wherein the lens barrel is composed of an object side part and an image side part; the lens barrel is provided with a positioning groove on the outer peripheral surface of the image side portion, the positioning groove extends in parallel with the axis along the axial direction of the lens barrel, and is open toward the object side end. A positioning groove is provided on the lens barrel. When the lens barrel is installed in the camera module, the positioning groove is matched with the positioning piece on the shell, the movement of the lens barrel is limited in the circumferential direction, the focusing clarity is ensured to be unchanged, the focusing precision of the lens barrel in the camera module is ensured, and the imaging quality is improved. The positioning groove is arranged on the lens barrel, so that the radial size of the lens barrel can be effectively reduced, when the lens barrel is assembled into the camera module, the space between the position on the lens barrel where the positioning groove is arranged and the shell is increased, and therefore the magnet in the camera module can be installed in the space between the positioning groove and the shell, and the volume of the camera module is reduced.
Description
Technical Field
The invention relates to a lens barrel for an image pickup module and a lens module comprising the lens barrel.
Background
In the prior art, a lens module is assembled with a motor provided with a coil through a screw lock, and then the motor drives the lens to realize an automatic focusing function. This assembly has the following drawbacks:
(1) When the lens and the motor are assembled in a matching way, the strength of the lens barrel and the motor is considered, the assembled external dimension is larger, and the size of the lens module is larger;
(2) When the lens is matched with the motor, the torsion between the lens and the motor is not easy to control, the lens or the motor is easily damaged due to too large torsion, and the small torsion lens is easy to run out of focus;
(3) When the lens is assembled with the motor, assembly errors exist, and the focusing effect of the lens is affected;
(4) The screw tooth structure is easy to generate scraps and dust during assembly, influences focusing effect and pollutes the lens module.
Disclosure of Invention
The invention aims to solve the technical problems and provide a lens barrel and a lens module comprising the lens barrel, which reduce the volume of the lens module and improve the focusing precision.
In order to achieve the above object, the present invention provides an image capturing module, including: the lens comprises a lens barrel, a shell, a lens group, an upper elastic piece and a lower elastic piece;
the lens barrel is composed of an object side part and an image side part, and at least three object side near bosses are arranged on the end surface of the image side part connected with the object side part at intervals;
the lens barrel comprises at least one flange which is used for protruding from the outer circumferential surface of the lens barrel along the radial direction of the lens barrel and far away from the outer circumferential surface of the lens barrel, at least one flange is a near-image side flange which is arranged on the outer circumferential surface of the image side part, and at least three near-image side bosses are arranged on the near-image side surface of the near-image side flange at intervals;
the upper elastic piece is provided with a positioning hole, and the boss at the near object side is embedded into the positioning hole of the upper elastic piece;
the lower elastic piece is provided with a positioning hole, and the near-image-side boss is embedded into the positioning hole of the lower elastic piece.
According to an aspect of the present invention, a positioning groove is provided on an outer peripheral surface of the barrel image side portion, the positioning groove extending parallel to the axis along the barrel axis direction and being open toward the object side end.
According to an aspect of the present invention, the lens barrel is provided with at least three of the positioning grooves, the positioning grooves being equiangularly equally spaced on the outer peripheral surface of the image side portion.
According to an aspect of the present invention, the near-image side flange is a circular flange or a regular hexagonal flange symmetrically distributed around the axis of the lens barrel.
According to one aspect of the invention, the near-image-side boss is arranged on the near-image-side surface of the near-image-side flange at equal angles in a first quadrant, a third quadrant and a fourth quadrant, and one is arranged in a second quadrant.
According to an aspect of the present invention, the near-image-side boss is a columnar body extending along the axial direction of the lens barrel, and the columnar body has a circular, elliptical or rectangular cross section.
According to an aspect of the present invention, the object-side bosses are equiangularly spaced and evenly distributed on an end face where the image side portion and the object side portion are connected.
According to an aspect of the present invention, the object-proximal boss is a columnar body extending along the axial direction of the lens barrel, and the columnar body has a circular, elliptical or rectangular cross section.
According to one aspect of the invention, the flange comprises: a near-image-side flange provided on an outer peripheral surface of the image-side portion and a near-object-side flange provided on the outer peripheral surface of the image-side portion at a spacing.
According to an aspect of the present invention, the length of the near-object side flange extending in the radial direction of the lens barrel is smaller than the length of the near-image side flange extending in the radial direction of the lens barrel.
According to one aspect of the invention, the lens barrel is an integrally molded, one-piece injection molded part.
According to one aspect of the invention, a positioning piece is arranged on the shell, and the positioning piece is embedded in the positioning groove.
According to the present invention, a positioning groove is provided on a lens barrel. When the lens barrel is installed in the camera module, the positioning groove is matched with the positioning piece on the shell, the movement of the lens barrel is limited in the circumferential direction, the focusing clarity is ensured to be unchanged, the focusing precision of the lens barrel in the camera module is ensured, and the imaging quality is improved. Meanwhile, the radial size of the lens barrel can be effectively reduced by arranging the positioning groove on the lens barrel, particularly when the lens barrel is assembled into the camera module, the space between the position of the positioning groove on the lens barrel and the shell is increased, so that the magnet in the camera module can be installed in the space between the positioning groove and the shell, and the volume of the camera module is reduced.
According to the invention, the lens barrel is provided with the flange, and the motor coil in the camera module can be directly wound on the lens barrel. Thus, the structure of the prior art that the motor carrier and the lens barrel are connected through threads is reduced. The radial dimension of the lens barrel is reduced without screw threads, and the integration of the lens and the motor carrier is realized. The size of the camera module is reduced, and the camera module comprising the lens barrel is convenient to install in a narrow space of mobile equipment such as a mobile phone, an IPad and the like.
According to the invention, the motor coil is directly arranged on the lens barrel, so that the problem that the focusing is poor and the lens and imaging quality are affected due to poor assembly caused by the conventional split structure, namely the structure that the lens barrel and the motor carrier are connected with each other through threads, in the assembly process is avoided.
According to the invention, a thread structure is not arranged between the lens barrel and the motor carrier, so that dust pollution generated when the motor and the lens barrel are locked and twisted in the prior art is avoided, and further, the influence on the shooting quality due to dust pollution is avoided.
According to the invention, the lug boss used for limiting the elastic piece is arranged on the lens barrel, so that the elastic piece is always kept at the correct position in the working engineering, the lens is ensured to be at the correct position in the focusing process, the lens is prevented from running out of focus, and the focusing precision is ensured.
According to the invention, the flange is arranged on the lens barrel, and the motor coil can be directly arranged or supported on the side surface of the flange, so that the space is saved, and the volume of the lens module is reduced.
According to the invention, the flange is a closed continuous flange which is integrally arranged around the outer peripheral surface of the lens barrel, so that the structural strength of the flange can be ensured, and the flange can be further ensured to have enough strength to support the voice coil motor coil, thereby being beneficial to ensuring the stability of the focusing process and the focusing precision.
Drawings
Fig. 1 is a structural view schematically showing a lens barrel according to the present invention;
FIG. 2 is an enlarged view of a portion of the schematic of FIG. 1;
fig. 3 is a plan view schematically showing an image side portion of the lens barrel according to the present invention;
fig. 4 is a bottom view schematically showing an image side portion of the lens barrel according to the present invention;
fig. 5 is a block diagram schematically showing a lens module including the lens barrel of the present invention;
fig. 6 is a structural view schematically showing a housing according to the present invention.
Detailed Description
As shown in fig. 1, in this patent, the upper side along the axial direction of the lens barrel 1 is the near object side of the lens barrel 1, and the lower side is the near image side of the lens barrel 1.
As shown in fig. 1, according to an embodiment of the present invention, a lens barrel 1 for an image pickup module is a stepped hollow cylinder. The inside of the lens barrel 1 is for accommodating and fixing a lens group, and thus the inner surface thereof is provided with a stepped boss for supporting a fixed lens. The outer peripheral surface of the lens barrel 1 is provided with steps and protrusions (described in detail below). In the present embodiment, the upper end of the lens barrel 1 is the object side portion 2 of the lens barrel 1, and the lower end of the lens barrel 1 is the image side portion 3 of the lens barrel 1. The top of the object side part 2 of the lens barrel 1 is provided with a light transmission hole for allowing light to enter the camera module. The image side portion 3 of the lens barrel 1 is provided with an opening opened to the photosensitive chip of the image pickup module for allowing light entering the lens barrel 1 to reach the photosensitive chip.
As shown in fig. 1, a near-image-side flange 4 is provided on the outer peripheral surface of the image-side portion 3 of the lens barrel 1. The near-image side flange 4 extends from the outer peripheral surface of the image side portion 3 of the lens barrel 1 in the radial direction of the lens barrel 1 in a direction away from the outer peripheral surface of the lens barrel 1, forming a convex flange-like flange orthogonal to the axis of the lens barrel 1. According to the present invention, the near-image side flange 4 is a closed continuous flange integrally provided around the outer peripheral surface of the lens barrel 1, so that the structural strength of the flange 4 can be effectively ensured, and the flange 4 is ensured to have sufficient supporting strength.
Fig. 2 shows, in a partially enlarged manner, the near object side surface 401 and the near image side surface 402 of the near image side flange 4, and the near image side boss 5 of the lens barrel 1. The near object side 401 is mainly used for supporting and fixing a voice coil motor coil, which is not shown in the drawings, and the near image side 402 is provided with a near image side boss 5.
Fig. 3 is a plan view of the image side portion 3 of the lens barrel 1 shown in fig. 1, i.e., a plan view from the near object side of the image side portion 3. As shown in fig. 3, in the present embodiment, the near-image-side flange 4 on the lens barrel 1 has a regular hexagon. In different embodiments, the near-image-side flange 4 may be rectangular, octagonal, or circular.
As shown in fig. 3, according to one embodiment of the present invention, at least three positioning grooves 8 are provided on the outer peripheral surface of the image side portion 3 of the lens barrel 1. In the present embodiment, four rectangular positioning grooves 8 are provided on the outer peripheral surface of the image side portion 3 of the lens barrel 1. The positioning grooves 8 are symmetrically distributed at 90 degrees relative to the axis of the lens barrel 1. In the axial direction of the lens barrel 1, the positioning groove 8 extends from the object-side end surface of the image side portion 3 toward the near image side, and the positioning groove 8 extends to the near image side flange 4 to terminate. As shown in fig. 3, the positioning groove 8 is opened on the end face of the image side portion 3 on the object side and opened toward the axis direction away from the lens barrel 1, so as to allow the corresponding positioning piece to be fitted with each other in the mounted state, thereby fixing the lens barrel 1 in the circumferential direction so as not to be rotatable.
As shown in fig. 1 and 3, the end face of the image side portion 3 near the object side and the end face of the object side portion 2 near the image side are fixedly connected to each other. At least three object-near-side bosses 7 are further provided on the object-near-side end face of the image-side portion 3. In the present embodiment, the object-proximal boss 7 extends toward the object-proximal side of the lens barrel 1 in parallel with the axis of the lens barrel 1. In the present embodiment, the object-proximal boss 7 is located at a position where the image side portion 3 and the object side portion 2 are connected, and the object-proximal boss 7 and the outer peripheral surface of the object side portion 2 are fixedly connected to each other and extend along the outer peripheral surface of the object side portion 2. The object-side boss 7 and the outer peripheral surface of the object-side part 2 are fixedly connected with each other, so that the connection between the object-side part 2 and the image-side part 3 is firmer. The cross section of the near object side boss 7 may be circular, elliptical, rectangular, etc. In the present embodiment, 4 near-object-side bosses 7 are provided. The object-near bosses 7 are arranged at equal angles and are staggered with the positioning grooves 8 in horizontal projection and distributed on the end face of the object near side of the image side 3 of the lens barrel 1.
As shown in fig. 1 and 3 in combination, according to an embodiment of the present invention, a near object side flange 6 is further provided on the outer peripheral surface of the image side portion 3 of the lens barrel 1, and the near object side flange 6 is located above the near image side flange 4. In the present embodiment, the near-object side flange 6 extends from the outer peripheral surface of the image side portion 3 of the lens barrel 1 in the radial direction of the lens barrel 1 in a direction away from the outer peripheral surface of the lens barrel 1, forming a convex flange orthogonal to the axis of the lens barrel 1. In the present embodiment, the near-object side flange 6 is provided on the outer peripheral surface of the image side portion 3 at intervals.
Further, in the present embodiment, the distance by which the near-object side flange 6 on the outer peripheral surface of the image side portion 3 of the lens barrel 1 extends in the radial direction of the lens barrel 1 in a direction away from the outer peripheral surface of the lens barrel 1 is smaller than the distance by which the near-image side flange 4 on the outer peripheral surface of the image side portion 3 of the lens barrel 1 extends in the radial direction of the lens barrel 1 in a direction away from the outer peripheral surface of the lens barrel 1. After the shell 9 of the motor and the lens cone 1 are integrally assembled, a larger gap is formed between the near object side flange 6 and the shell 9 of the motor, the space between the shell 9 of the motor and the lens cone 1 is increased, other parts in the camera module are conveniently placed, the size of the camera module in the radial direction is reduced, and the camera module is small in size and beneficial.
As shown in conjunction with fig. 2 and 4, according to one embodiment of the present invention, at least three near-image-side bosses 5 are provided on the near-image-side surface 402 of the near-image-side flange 4 on the near-image-side portion 3 of the lens barrel 1. In the present embodiment, the number of near-image-side bosses 5 is 7. In the plane shown in fig. 4, two near-image-side bosses 5 are provided in the first, third, and fourth quadrants, respectively, and one near-image-side boss 5 is provided in the second quadrant. In the first quadrant, the third quadrant and the fourth quadrant, two near-image-side bosses 5 are distributed alternately and are respectively arranged close to coordinate axes. In the second quadrant, only one near-image-side boss 5 is provided. According to the inventive concept, different numbers of near-image-side bosses 5, such as 5, 6, etc., can be provided for fixing and controlling the corresponding elastic members, thereby improving focusing accuracy and imaging quality.
As shown in fig. 5, the image pickup module to which the lens barrel 1 according to the present invention is mounted includes a housing 9 and a lower elastic member 12 and an upper elastic member 11 provided respectively at the near-image side portion 3 of the lens barrel 1. In the mounted state shown in fig. 5, the positioning hole on the upper elastic member 11 is matched with the object-near side boss 7 on the lens barrel 1, and the position and displacement of the upper elastic member 11 are fixed and controlled by the object-near side boss 7; the positioning hole on the lower elastic member 12 is matched with the image-near boss 5 on the lens barrel 1, and the position and displacement of the lower elastic member 12 are fixed and controlled by the image-near boss 5.
Fig. 6 shows a housing 9 of an camera module according to the invention. As shown in fig. 6, in the present embodiment, the housing 9 has a hollow rectangular shape. One end of which is open and the other end of which has a through hole 13. On the edge of the through hole 13, a positioning member 10 is provided. In the embodiment shown in fig. 6, a total of 4 positioning members 10 are provided. The positioning pieces 10 correspond to the positioning grooves 8 on the lens barrel 1, and are fitted into the corresponding positioning grooves 8 in the mounted state, thereby fixing the lens barrel 1 in the circumferential direction, and restricting the axial rotation or movement thereof.
The foregoing is merely exemplary of embodiments of the present invention and, as for devices and structures not explicitly described herein, it should be understood that they may be implemented using general purpose devices and general purpose methods known in the art.
The above description is only one embodiment of the present invention and is not intended to limit the present invention, and various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A lens module, comprising: a lens barrel (1), a housing (9), a lens group, an upper elastic member (11) and a lower elastic member (12);
the lens barrel (1) consists of an object side part (2) and an image side part (3), and at least three object side bosses (7) are arranged on the end surface of the image side part (3) connected with the object side part (2) at intervals;
the lens barrel (1) comprises at least one flange for protruding from the outer circumferential surface of the lens barrel along the radial direction of the lens barrel to be far away from the outer circumferential surface of the lens barrel, at least one flange is a near-image side flange (4) arranged on the outer circumferential surface of the image side part (3), and at least three near-image side bosses (5) are arranged on the near-image side surface of the near-image side flange (4) at intervals;
the upper elastic piece (11) is provided with a positioning hole, and the object-near boss (7) is embedded into the positioning hole of the upper elastic piece (11);
the lower elastic piece (12) is provided with a positioning hole, and the image side boss (5) is embedded into the positioning hole of the lower elastic piece (12).
2. Lens module according to claim 1, characterized in that the outer circumferential surface of the image side portion (3) of the lens barrel (1) is provided with a positioning groove (8), the positioning groove (8) extending parallel to the axis along the axis direction of the lens barrel (1) and being open toward the object side end.
3. Lens module according to claim 2, characterized in that the lens barrel (1) is provided with at least three of the positioning grooves (8), the positioning grooves (8) being equally equiangularly equally spaced on the outer peripheral surface of the image side portion (3).
4. Lens module according to claim 1, characterized in that the near-image side flange (4) is a circular flange or a regular hexagonal flange symmetrically distributed around the axis of the barrel (1).
5. The lens module according to claim 1, wherein the near-image side boss (5) is disposed on the near-image side surface (402) of the near-image side flange (4) in two first, third and fourth quadrants at equal angles, and one in the second quadrant.
6. The lens module according to claim 5, wherein the near-image-side boss (5) is a columnar body extending along an axial direction of the lens barrel (1), and a cross section of the columnar body is circular, elliptical or rectangular.
7. Lens module according to claim 1, characterized in that the object-near bosses (7) are equally spaced apart on the end face of the image-side part (3) to which the object-side part (2) is connected.
8. Lens module according to claim 1 or 7, characterized in that the object-near boss (7) is a cylindrical body extending in the direction of the axis of the barrel (1), the cross section of the cylindrical body being circular, elliptical or rectangular.
9. The lens module as claimed in claim 1, wherein the flange comprises: a near-image-side flange (4) provided on the outer peripheral surface of the image-side portion (3) and a near-object-side flange (6) provided on the outer peripheral surface of the image-side portion (3) at intervals.
10. Lens module according to claim 9, characterized in that the length of the near object side flange (6) extending in the radial direction of the barrel (1) is smaller than the length of the near image side flange (4) extending in the radial direction of the barrel (1).
11. Lens module according to claim 1, characterized in that the lens barrel (1) is an integrally formed, unitary injection-molded piece.
12. A lens module according to claim 3, characterized in that the housing (9) is provided with a positioning element (10), said positioning element (10) being embedded in the positioning groove (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711154503.4A CN107678120B (en) | 2017-11-20 | 2017-11-20 | Lens barrel for camera module and lens module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711154503.4A CN107678120B (en) | 2017-11-20 | 2017-11-20 | Lens barrel for camera module and lens module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107678120A CN107678120A (en) | 2018-02-09 |
| CN107678120B true CN107678120B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711154503.4A Active CN107678120B (en) | 2017-11-20 | 2017-11-20 | Lens barrel for camera module and lens module |
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| CN (1) | CN107678120B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110618513B (en) * | 2018-06-20 | 2024-07-12 | 宁波舜宇光电信息有限公司 | Optical lens, camera module and assembling method thereof |
| CN115473976B (en) * | 2021-06-11 | 2024-11-12 | 宁波舜宇光电信息有限公司 | Lens assembly and camera module and assembly method thereof |
| CN115473978B (en) * | 2021-06-11 | 2024-03-12 | 宁波舜宇光电信息有限公司 | Lens assembly, camera module and assembly method thereof |
| CN115484362B (en) * | 2021-06-15 | 2024-10-01 | 宁波舜宇光电信息有限公司 | Lens assembly, camera module and assembly method thereof |
| CN115484359B (en) * | 2021-06-15 | 2024-04-16 | 宁波舜宇光电信息有限公司 | Lens assembly, camera module and assembly method thereof |
| CN115550524A (en) * | 2021-06-30 | 2022-12-30 | 宁波舜宇光电信息有限公司 | Camera module and assembly method thereof |
| CN113810582A (en) * | 2021-09-28 | 2021-12-17 | 浙江舜宇智领技术有限公司 | Camera shooting module |
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| CN1971329A (en) * | 2005-11-25 | 2007-05-30 | 阿尔卑斯电气株式会社 | Lens drive device and pickup device adopting the lens drive device |
| JP2010048924A (en) * | 2008-08-20 | 2010-03-04 | Kantatsu Co Ltd | Imaging lens unit |
| CN207502798U (en) * | 2017-11-20 | 2018-06-15 | 浙江舜宇光学有限公司 | For the lens barrel of camera module and camera lens module |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI282873B (en) * | 2004-03-12 | 2007-06-21 | Premier Image Technology Corp | Lens module and assembling method thereof |
| JP4218964B2 (en) * | 2004-08-05 | 2009-02-04 | キヤノン株式会社 | LENS DEVICE AND IMAGING DEVICE |
| TWI442125B (en) * | 2011-05-19 | 2014-06-21 | Ability Entpr Co Ltd | Lens barrel |
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- 2017-11-20 CN CN201711154503.4A patent/CN107678120B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1971329A (en) * | 2005-11-25 | 2007-05-30 | 阿尔卑斯电气株式会社 | Lens drive device and pickup device adopting the lens drive device |
| JP2010048924A (en) * | 2008-08-20 | 2010-03-04 | Kantatsu Co Ltd | Imaging lens unit |
| CN207502798U (en) * | 2017-11-20 | 2018-06-15 | 浙江舜宇光学有限公司 | For the lens barrel of camera module and camera lens module |
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| Publication number | Publication date |
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| CN107678120A (en) | 2018-02-09 |
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