KR101887343B1 - Lens barrel and camera module having the same - Google Patents

Lens barrel and camera module having the same Download PDF

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Publication number
KR101887343B1
KR101887343B1 KR1020150144348A KR20150144348A KR101887343B1 KR 101887343 B1 KR101887343 B1 KR 101887343B1 KR 1020150144348 A KR1020150144348 A KR 1020150144348A KR 20150144348 A KR20150144348 A KR 20150144348A KR 101887343 B1 KR101887343 B1 KR 101887343B1
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KR
South Korea
Prior art keywords
lens barrel
elastic member
receiving groove
ring
camera module
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Application number
KR1020150144348A
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Korean (ko)
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KR20170044533A (en
Inventor
이윤기
이기호
김아경
Original Assignee
(주)캠시스
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Priority to KR1020150144348A priority Critical patent/KR101887343B1/en
Publication of KR20170044533A publication Critical patent/KR20170044533A/en
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Publication of KR101887343B1 publication Critical patent/KR101887343B1/en

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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
    • G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • H04N5/2254—

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)

Abstract

The present invention relates to a lens barrel and a camera module, and more particularly, to a lens barrel according to the present invention includes a lens barrel body part having a series of lenses built therein; And a lens barrel upper surface provided on an upper portion of the lens barrel body portion and having an opening to allow reflected light of an external object to reach the lenses, Receiving grooves are formed.
According to the present invention, a ring-shaped groove is formed on the lens barrel to attach the ring-shaped elastic member, thereby reducing the tolerance in attaching the ring-shaped elastic member in the manufacturing process, and the positional relationship between the ring- It is possible to easily identify the defective product due to the tolerance.

Description

[0001] The present invention relates to a lens barrel and a camera module having the lens barrel,

The present invention relates to a lens barrel and a camera module, and more particularly, to a lens barrel used in a mobile device and the like, and a camera module having the lens barrel.

BACKGROUND ART [0002] Recently, various mobile device technologies capable of transmitting and receiving voice information and data with ease of portability have been rapidly developed and popularized. As the popularity of mobile communication terminals increases, the demand for small-sized camera modules for utilizing these small information communication terminals for image communication and imaging work is greatly increasing.

The camera module is manufactured as a main component of an image sensor such as a CCD or a CMOS. The image of the object is collected through the image sensor and stored as data on a memory in the device. The stored data is stored in an LCD or a PC monitor A display medium such as a display medium, or the like.

Hereinafter, a camera module according to the related art will be schematically described with reference to the accompanying drawings. 1 is a longitudinal sectional view schematically showing a conventional camera module.

The general camera module is largely composed of the lens barrel 100p, the housing 150, the image sensor 200, and the circuit board 250, and the like.

The lens barrel 100p is inserted into the housing 150 and coupled to the image sensor 16 to collect light reflected from an external object through a plurality of lenses Ls built therein. The image sensor 200 is a member for converting an external image into a video signal, and is installed on the circuit board 250. The circuit board 250 is for transferring an electric signal generated from the image sensor 200 to an external electronic component or device, and the housing 150 is fixedly coupled to the upper portion thereof. A separate cover glass (not shown) is provided on the upper surface of the lens barrel 100p to protect the lenses Ls provided in the lens barrel 100p and to prevent foreign matter from penetrating.

On the other hand, a ring-shaped elastic member surrounding the exposed region of the lens is attached to the upper part of the lens barrel 100p to prevent breakage due to an external impact or the like when the lens barrel 100p comes into contact with the case of the mobile device or the cover glass.

Such a ring-like elastic member may cause a deviation from the center outward due to tolerances in the manufacturing process. When the ring-shaped elastic member is shifted from the center to the outer periphery, it interferes with the angle of view, thereby causing a problem such as a superficial rim.

The center of the ring-shaped elastic member is measured, and the normal product excluding the defective product is shipped using various methods. However, the camera module with such an elastic member is shipped in a stacked state on the tray, and may be shifted from the fixed position due to the pushing or leaning phenomenon in this process.

As described above, there is a possibility that the camera module may be defective at the customer's office due to the tolerance when attaching the ring-like elastic member in the manufacturing process or the shaking or leaning in the transportation process.

SUMMARY OF THE INVENTION The present invention is conceived to solve the above problems, and it is an object of the present invention to provide a lens barrel and a camera module having the lens barrel.

The present invention also provides a lens barrel and a camera module having the lens barrel, which can easily detect the tolerance through the naked eye without having to measure the position of the ring-like elastic member through a separate apparatus and process.

The present invention also provides a lens barrel having a structure capable of minimizing the sagging and tilting phenomenon during the transportation process, and a camera module having the lens barrel.

A lens barrel according to the present invention includes a lens barrel body part having a series of lenses built therein; And a lens barrel upper surface provided on an upper portion of the lens barrel body portion and having an opening to allow reflected light of an external object to reach the lenses, Receiving grooves are formed.

Further, a ring-shaped elastic member may be provided in the receiving groove.

Further, the depth of the receiving groove may be smaller than the thickness of the elastic member.

Further, the bottom surface of the receiving groove may be subjected to at least any one of anti-slip surface treatment such as increase of roughness, embossing treatment and formation of an adhesive layer.

Further, the bottom surface of the receiving groove may be formed to be inclined downward toward the central axis direction.

The bottom surface of the elastic member may be inclined toward the center so as to coincide with the bottom surface of the receiving groove.

The elastic member may be a poron adhesive tape.

Further, the bottom surface of the elastic member may be curved in the circumferential direction.

According to another aspect of the present invention, there is provided a camera module including: a circuit board; The lens barrel described above; An image sensor mounted on the circuit board and converting an optical image transmitted through the lens barrel into an electrical signal; And a housing fixed on the circuit board and fixing the lens barrel.

According to the present invention, a ring-shaped groove is formed on the lens barrel to attach the ring-shaped elastic member, thereby reducing the tolerance in attaching the ring-shaped elastic member in the manufacturing process.

Further, according to the present invention, the positional relationship between the ring-shaped groove formed on the lens barrel and the ring-shaped elastic member can be visually distinguished from the naked eye, thereby facilitating the identification of the defective product due to the tolerance.

Further, according to the present invention, since the ring-shaped elastic member is located in the ring-shaped groove, the phenomenon that the ring-shaped elastic member is tilted or pushed in the conveying process by the step of the ring-shaped groove can be minimized.

1 is a longitudinal sectional view schematically showing a conventional camera module.
2 is a perspective view illustrating a camera module according to an exemplary embodiment of the present invention.
3 is a perspective view illustrating a lens barrel according to one embodiment.
4 is a perspective view showing a combined state of the lens barrel and the housing according to one embodiment.
5 is a perspective view and a bottom perspective view showing a state of a ring-shaped elastic member according to an embodiment of the present invention.
6 and 7 are longitudinal cross-sectional views schematically showing a state in which a ring-shaped elastic member is attached to a camera module according to an embodiment.
8 is an enlarged cross-sectional view showing a ring-shaped elastic member and a lens barrel according to another embodiment.
9 is a perspective view showing a lens barrel according to another embodiment.
10 is a perspective view showing a lens barrel according to another embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the absence of special definitions or references, the terms used in this description are based on the conditions indicated in the drawings. The same reference numerals denote the same members throughout the embodiments. For the sake of convenience, the thicknesses and dimensions of the structures shown in the drawings may be exaggerated, and they do not mean that the dimensions and the proportions of the structures should be actually set.

A camera module according to an embodiment of the present invention will be described with reference to FIG. 2 is a perspective view illustrating a camera module according to an exemplary embodiment of the present invention.

The camera module 10 according to an embodiment of the present invention includes a lens barrel 100, a housing 150 and a circuit board 250, and an elastic member 300 is provided on the lens barrel 100 .

The elastic member 300 is provided so as to surround the periphery of the lens Ls exposed to the upper portion of the lens barrel 100 and contacts the housing such as a cover glass or a smart device to directly transmit an external impact to the camera module And at the same time prevents foreign matter or the like from being introduced into the camera module as much as possible.

Hereinafter, the components according to various embodiments of the present invention will be described in detail with reference to the lens barrel 100 and the elastic member 300.

A lens barrel according to an embodiment will be described with reference to FIGS. 3 and 4. FIG. FIG. 3 is a perspective view showing a lens barrel according to one embodiment, and FIG. 4 is a perspective view showing a combined state of a lens barrel and a housing according to an embodiment.

The lens barrel 100 according to the present embodiment can be roughly divided into a lens barrel body 120 and a lens barrel upper surface 110. As is well known, a plurality of lenses Ls are provided on the inner side of the lens barrel body portion 120. The outer circumferential surface of the lens barrel body portion 120 according to the present embodiment is formed with threads for fastening with a housing to be described later. However, the outer circumferential surface of the lens barrel body 120 is processed for fastening with the housing, and may be formed in various shapes or configurations depending on the fastening method with the housing.

The lens barrel upper surface 110 is formed with an opening 113 to expose the lens Ls at its center. A groove-shaped receiving groove 111 is formed around the opening 113 in the periphery of the opening 113. The receiving groove 111 according to the present embodiment is formed with a constant thickness and width and is formed in a constant radius range from the center of the opening 113. The receiving groove 111 is a component for receiving an elastic member to be described later, and the depth of the receiving groove 111 is preferably smaller than the thickness of the elastic member to be described later.

The lens barrel 100 is fixed to the circuit board 250 by being coupled to the housing 150 fixed on the circuit board 250 as described above. The lens barrel 100 and the housing 150 can be formed in various constructions such as an interference fit type and a fit fit type in addition to the screw fastening type.

On the other hand, as shown in FIG. 4, an adhesive layer may be separately formed on the bottom surface of the receiving groove 111 to improve the adhesive force with the elastic member, which will be described later, or an adhesive may be applied in advance.

A ring-shaped elastic member according to an embodiment will be described with reference to Figs. 5 to 7. Fig. FIG. 5 is a perspective view and a bottom perspective view showing a state of a ring-shaped elastic member according to an embodiment of the present invention, and FIGS. 6 and 7 are cross-sectional views schematically showing a state in which a ring-shaped elastic member is attached to a camera module according to an embodiment .

The elastic member 300 is formed in a ring shape as a whole as shown in Fig. 5 (a). Also, it is preferable that the adhesive layer 301 is formed on the bottom surface of the elastic member 300 as shown in FIG. 5 (b). As described above, the elastic member 300 is provided between the lens barrel, the cover glass or the lens barrel and the housing of the smart device or the like to absorb the external impact and prevent the inflow of foreign matter or the like.

As the elastic member, a urethane adhesive tape, more specifically a poron tape, may be used. Poron Tape is a high performance, high performance urethane elastomer with very fine and uniform bubbles. And has excellent physical properties such that the compression set is extremely low and can not be seen by any other foamed elastomer. Specifically, it is excellent in energy absorption, salability, dimensional stability and low migration, and can be used for cushioning which absorbs impact.

As shown in FIG. 5 (b), in the case of the elastic member 300, particularly the polar tape, since the adhesive layer 301 is formed on one surface of the urethane layer, Can be received in the receiving groove 111 from the upper portion of the lens barrel 100 and attached to the bottom surface of the receiving groove 111. [

When the elastic member 300 is attached to the lens barrel 100 in a state where the receiving groove 111 is not formed, the lens Ls may be covered with the elastic member 300 due to the error in the attaching step, In the case of the lens barrel 100 according to the present embodiment, since the elastic member 300 is received in the receiving groove 111, It is possible to promptly determine whether or not the attachment process has been correctly performed in the step of attaching the elastic member 300, and it is not necessary to perform a separate failure determination process. Also, since the step of the receiving groove 111 allows the elastic member 300 to be pushed in a predetermined position, there is a considerable reduction in the possibility of problems such as pushing or tilting in one direction.

8 to 10, a lens barrel according to another embodiment will be described. FIG. 8 is an enlarged cross-sectional view showing a ring-like elastic member and a lens barrel according to another embodiment, FIG. 9 is a perspective view showing a lens barrel according to another embodiment, and FIG. 10 is a perspective view showing a lens barrel according to another embodiment It is a perspective view.

Referring to FIG. 8, the bottom surface of the receiving groove 111a according to the present embodiment may be formed to be inclined downward toward the lens Ls side, that is, toward the center axis of the lens barrel 100a. In this case, it is preferable that the bottom surface 301a of the elastic member 300a is also formed so as to be inclined toward the central axis so as to coincide with the bottom surface shape of the receiving groove 111a. With such a configuration, the effect of increasing the area of the attachment surface on which the elastic member 300a is attached can be obtained, and the effect of preventing the jamming and tilting phenomenon can be further prevented when the elastic member 300a is attached to the fixed position Can be obtained.

Referring to FIG. 9, the lens barrel 100b according to the present embodiment can perform a process for preventing slipping on the bottom surface of the receiving groove 111b. For example, at least a part of the bottom surface of the receiving groove 111b can be subjected to a surface treatment such as increasing the roughness or embossing the surface. It is possible to minimize the occurrence of the phenomenon that the elastic member is pushed or tilted as the elastic member slips when the elastic member is attached through surface treatment such as increasing the roughness of the bottom surface of the receiving groove 111b.

It is also possible to form a constant curvature on the bottom surface of the receiving groove. For example, as shown in FIG. 10, the bottom surface of the receiving groove 111c can form a curved line that repeats high and low along the circumferential direction with respect to the central axis of the lens barrel 100c. By forming such a curved surface, the adhesion area with the elastic member is increased, and when the elastic member is interposed between the elastic member and the housing such as a cover glass or a smart device, the sealing property can be improved.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. have.

10: Camera module
100, 100a, 100b: Lens barrel
110: lens barrel upper surface
111: receiving groove
120: Lens barrel body part
300: ring-shaped elastic member

Claims (9)

In a lens barrel for an auto-focusing type camera module,
A lens barrel body portion having a series of lenses built therein; And
And a lens barrel upper surface provided on an upper portion of the lens barrel body portion and having an opening to allow reflected light of an external object to reach the lenses,
Wherein a groove-shaped receiving groove is formed on an upper surface of the lens barrel so as to surround the opening,
The receiving groove is provided with a ring-shaped elastic member,
An adhesive layer adhered to a bottom surface of the receiving groove is formed at the bottom of the elastic member ,
And the upper end surface of the elastic member is protruded to the upper portion of the receiving groove . delete delete The method according to claim 1,
Wherein the bottom surface of the receiving groove is subjected to at least one of the anti-slip surface treatment to increase the roughness, emboss treatment and formation of the adhesive layer. The method according to claim 1,
Wherein a bottom surface of the receiving groove is formed to be inclined downward toward a central axis direction. 6. The method of claim 5,
And the bottom surface of the elastic member is formed to be inclined toward the center so as to coincide with the bottom surface of the receiving groove. The method according to claim 1,
Wherein the elastic member is a poron adhesive tape. The method according to claim 1,
Wherein a bottom surface of the receiving groove is curved in a circumferential direction. A circuit board;
8. A lens barrel according to any one of claims 1 to 7,
An image sensor mounted on the circuit board and converting an optical image transmitted through the lens barrel into an electrical signal; And
And a housing fixed on the circuit board and fixing the lens barrel.
KR1020150144348A 2015-10-15 2015-10-15 Lens barrel and camera module having the same KR101887343B1 (en)

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Application Number Priority Date Filing Date Title
KR1020150144348A KR101887343B1 (en) 2015-10-15 2015-10-15 Lens barrel and camera module having the same

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Application Number Priority Date Filing Date Title
KR1020150144348A KR101887343B1 (en) 2015-10-15 2015-10-15 Lens barrel and camera module having the same

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KR20170044533A KR20170044533A (en) 2017-04-25
KR101887343B1 true KR101887343B1 (en) 2018-08-10

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Publication number Priority date Publication date Assignee Title
KR102586076B1 (en) * 2020-10-07 2023-10-05 삼성전기주식회사 Lens module

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001042407A (en) 1999-07-28 2001-02-16 Olympus Optical Co Ltd Sealing device for camera
JP2010078772A (en) 2008-09-25 2010-04-08 Rohm Co Ltd Camera module

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050000722A (en) * 2003-06-24 2005-01-06 카스크테크놀러지 주식회사 Small camera optical system
KR20090028927A (en) * 2007-09-17 2009-03-20 문기원 A container cover
KR200471880Y1 (en) * 2012-06-29 2014-03-19 주식회사 세코닉스 Camera module having waterproof structure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001042407A (en) 1999-07-28 2001-02-16 Olympus Optical Co Ltd Sealing device for camera
JP2010078772A (en) 2008-09-25 2010-04-08 Rohm Co Ltd Camera module

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