TWI484244B - Lens barrel and camera module - Google Patents

Description

Lens barrel and camera module

The present invention relates to the field of optical systems, and in particular to a lens barrel and a camera module using the same.

With the development of camera technology, camera modules are widely used in various types of camera devices. The combination of camera modules and various portable electronic devices such as mobile phones and computers has been favored by many consumers. The camera module typically includes a lens barrel and a plurality of optical components housed in the lens barrel.

In the assembly process of the camera module, the optical component is usually fixed in the lens barrel by a dispensing method. However, this method often causes adhesiveness between the lens barrel and the optical element to be deteriorated due to deterioration of the glue, uneven coating of the glue, and a small contact area between the optical element and the lens barrel, which directly causes the optical element to be easily Falling off the lens barrel not only reduces the assembly yield between the lens barrel and the optical element, but also makes the camera module easy to fail. In addition, during the dispensing process, the glue can easily escape from between the inside of the lens barrel and the side of the optical element, and then flow to the upper surface of the optical element or other optical elements adjacent to the optical element, thereby affecting The imaging quality of the optical components further reduces the quality of the camera module.

In view of the above, it is necessary to provide a lens barrel in which an optical element can be fixed without dispensing, and a camera module having the same.

A lens barrel includes a hollow body portion. The inner surface of the hollow body portion encloses a receiving cavity. The hollow body portion has a first end and a second end opposite the first end. The first end is formed by the hollow body portion extending toward the inside of the lens barrel in a circumferential direction of the hollow body portion to form a lip portion. The lens barrel further includes a cover portion that is integrally coupled to the second end of the hollow body portion by a snap fit.

A camera module includes a lens barrel and at least one optical component. The lens barrel includes a hollow body portion. The hollow body portion includes a first end and a second end opposite the first end. The inner surface of the hollow body portion encloses a cylindrical receiving cavity. The receiving cavity is configured to receive the at least one optical component. The first end is formed by the hollow body portion extending toward the inside of the lens barrel in a circumferential direction of the hollow body portion to form a lip portion. The lens barrel further includes a cover portion. The cover portion is integrally coupled to the second end of the hollow body portion by a snapping manner, and the at least one optical member is pressed between the cover portion and the lip portion.

The hollow body portion and the cover portion of the lens barrel provided by the embodiment of the present invention are integrally integrated by the snapping manner, so that at least one optical component can be pressed between the cover body portion and the lip portion, eliminating the need for The dispensing process. Due to the pressing of the cover portion and the limitation of the lip portion, the optical component in the lens barrel is not easily detached from the lens barrel, and the camera module having the lens barrel is not easily damaged and has a long life. In addition, since no dispensing is required, the surface of the optical component is not covered by the glue, and the image quality of the camera module having the optical component is also high.

100‧‧‧ camera module

10‧‧‧Mirror tube

20‧‧‧First optical component

30‧‧‧Second optical component

40‧‧‧ Third optical component

50‧‧‧ mirror base

60‧‧‧Image sensor

70‧‧‧ boards

110‧‧‧ hollow body

101‧‧‧ first end

102‧‧‧ second end

103‧‧‧ external thread

104, 125‧‧‧ light hole

105‧‧‧ containment chamber

106‧‧‧Ring bulge

1010‧‧‧ Lips

120‧‧‧ cover body

121‧‧‧ bottom

123‧‧‧ top surface

127‧‧‧ side wall

128‧‧‧ Housing Department

129‧‧‧ annular groove

510‧‧‧ internal thread

1 is a schematic diagram of a camera module provided by an embodiment of the present invention.

2 is an exploded perspective view of the camera module of FIG. 1.

3 is a cross-sectional view of the camera module of FIG. 1 taken along line III-III.

4 is an enlarged view of a portion IV of the camera module of FIG. 3 in which the main body portion and the cover portion are engaged with each other.

Referring to FIG. 1 , FIG. 2 and FIG. 3 , the camera module 100 provided by the embodiment of the present invention includes a lens barrel 10 , a first optical component 20 , a second optical component 30 , a third optical component 40 , and a lens barrel . 10 is integrally connected to the mirror base 50, the image sensor 60 received at the bottom of the lens holder 50, and the circuit board 70 for carrying the image sensor 60. In the present embodiment, each of the first optical element 20, the second optical element 30, and the third optical element 40 is a lens composed of an optical portion and a non-optical portion (ie, a peripheral portion) surrounding the optical portion.

In the present embodiment, the lens barrel 10 is a hollow cylinder including a hollow body portion 110 and a lid portion 120 that is integrally fixed to the hollow body portion 110 by a snap fit.

The hollow body portion 110 includes a first end 101, a second end 102 opposite the first end 101, and a thread 103 disposed outside the outer wall of the hollow body portion 110.

The first end 101 of the lens barrel 10 is extended from the hollow body portion 110 toward the inside of the lens barrel 10 in the circumferential direction of the hollow body portion 110 to form a lip portion 1010. The lip portion 1010 is for confining the first optical element 20, the second optical element 30, and the third optical element 40 within the lens barrel 10. The lip portion 1010 is further configured to define a light passing hole 104 such that light passing through the first optical element 20, the second optical element 30, and the third optical element 40 can pass through the light passing hole 104 and be imaged by the image sensor 60. receive. Of course, the lip portion 1010 may also be provided with a plurality of spaced apart holes or grooves.

The inner surface of the hollow body portion 110 is enclosed to form a receiving cavity 105. The receiving cavity 105 communicates with the light passing hole 104 for accommodating the first optical element 20, the second optical element 30, and the third optical element 40. In the present embodiment, the lens barrel 10 is made of plastic.

The cover portion 120 includes a bottom surface 121 adjacent to the second end 102, a top surface 123 facing away from the bottom surface 121, and a light passing hole 125 penetrating the bottom surface 121 and the top surface 123. The light passing hole 125 communicates with the receiving cavity 105 so that external light can pass through the cover portion 120 to enter the first optical element 20, the second optical element 30, and the third optical element 40.

The cover portion 120 further includes a side wall 127 extending from a peripheral portion of the bottom surface 121 away from the bottom surface 121, and the side wall 127 and the bottom surface 121 of the cover portion 120 together define a receiving portion 128. The accommodating portion 128 is configured to receive the second end 102 of the hollow body portion 110 such that the cover portion 120 and the hollow body portion 110 can be integrally fixed by the snapping manner, and the first optical component 20 and the second optical component are The third optical element 40 and the third optical element 40 are pressed between the bottom surface 121 of the lid portion 120 and the lip portion 1010. In the present embodiment, the bottom surface 121 of the lid portion 120 is in contact with the top surface of the non-optical portion of the first optical element 20.

Preferably, in the present embodiment, the second end 102 of the hollow body portion 110 extends from the hollow body portion 110 toward the outside of the lens barrel 10 in the circumferential direction of the hollow body portion to form an annular protrusion 106. An inner surface of the side wall 127 of the body portion of the cover portion 120 is provided with an annular groove 129 surrounding the light passing hole 125. The annular groove 129 is for receiving the annular protrusion 106 so that the cover portion 120 and the hollow body portion 110 are better integrally fixed by the snapping manner. Of course, the annular protrusions 106 may also be provided with a plurality of spaced-apart holes or grooves.

The mirror mount 50 is a hollow structure. The inner surface of the mirror base 50 is provided with internal threads 510. The internal thread 510 cooperates with the external thread 103 of the lens barrel 10 to integrally couple the lens holder 50 and the lens barrel 10.

The image sensor 60 is received at the bottom of the lens holder 50 for sensing light passing through the first optical element 20, the second optical element 30, and the third optical element 40, and forms an image.

Certainly, a plurality of optical elements (such as lenses, spacers, and filters) may be interposed between the first optical element 20 and the second optical element 30, the second optical element 30, and the third optical element 40, and are not limited to the implementation. the way. Of course, the first optical element 20 and the third optical element 40 may also be optical elements other than the lens (such as spacers, filters, etc.).

During the assembly process, the third optical element 40, the second optical element 30, and the first optical element 20 are sequentially assembled from the second end 102 into the hollow body portion 110. Then, the cover body 120 and the hollow body portion 110 are integrally integrated by the engagement method, and the first optical element 20, the second optical element 30, and the third optical element 40 are pressed against the cover portion 120 and the lip. Between the sides 1010. Then, the lens barrel 10 and the lens holder 50 are screwed together, and the image sensor 60 disposed on the circuit board 70 is received at the bottom of the lens holder 50, thereby completing assembly of the camera module 100.

The hollow body portion 110 of the lens barrel 10 and the cover portion 120 are integrally fixed by a snapping manner, and the first optical element 20, the second optical element 30, and the third optical element 40 are pressed against the cover portion 120 and Between the lip portions 1010, the dispensing process is eliminated. Due to the pressing of the cover portion 120 and the limitation of the lip portion 1010, the optical components in the lens barrel 10 are not easily detached from the lens barrel 10, and the camera module 100 is not easily damaged and has a long life. In addition, since no dispensing is required, the surface of the optical component is not damaged by the glue, and the image quality of the camera module 100 having the optical component is also high.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

100‧‧‧ camera module

10‧‧‧Mirror tube

20‧‧‧First optical component

30‧‧‧Second optical component

40‧‧‧ Third optical component

50‧‧‧ mirror base

60‧‧‧Image sensor

70‧‧‧ boards

110‧‧‧ hollow body

101‧‧‧ first end

102‧‧‧ second end

104, 125‧‧‧ light hole

105‧‧‧ containment chamber

1010‧‧‧ Lips

120‧‧‧ cover body

121‧‧‧ bottom

123‧‧‧ top surface

127‧‧‧ side wall

128‧‧‧Second End Containment Department

Claims (4)

a lens barrel, the lens barrel including a hollow body portion, the inner surface of the hollow body portion enclosing a receiving cavity, the hollow body portion having a first end and a second end opposite the first end, wherein The first end end of the hollow body portion extends toward the inside of the lens barrel along the circumferential direction of the hollow body portion to form a lip portion, the lens barrel further includes a cover portion, and the cover portion includes a bottom surface adjacent to the second end and a side wall extending from a peripheral portion of the bottom surface away from the bottom surface, and the side wall and the bottom surface of the cover portion together define a receiving portion, the second end of the hollow body portion being hollowed by the hollow body portion The circumferential direction of the main body portion extends toward the outside of the lens barrel to form an annular protrusion. The inner surface of the side wall of the cover body portion is provided with an annular groove surrounding the light-passing hole, and the annular groove is for receiving the annular protrusion. The lens barrel of claim 1, wherein the outer wall of the hollow body portion is provided with an external thread. A camera module includes a lens barrel and at least one optical component, the lens barrel including a hollow body portion including a first end and a second end opposite the first end, the hollow body portion The inner surface is enclosed to form a receiving cavity for receiving the at least one optical component, wherein the first end is extended from the hollow body portion toward the inside of the lens barrel along the circumferential direction of the hollow body portion to form a lip The lens barrel further includes a cover portion including a bottom surface adjacent to the second end and a side wall extending from a peripheral portion of the bottom surface away from the bottom surface, and the side wall and the cover body The bottom surface of the portion defines a second end receiving portion, and the second end of the hollow body portion extends from the hollow body portion along the circumferential direction of the hollow body portion toward the outside of the lens barrel to form an annular protrusion, and the side wall of the cover portion The inner surface is provided with an annular groove surrounding the light-passing hole, the annular groove is for receiving the annular protrusion, and the at least one optical element is pressed between the cover body portion and the lip portion. The camera module of claim 3, wherein the outer wall of the hollow body portion is provided with an external thread, the camera module further comprising a hollow lens holder, the lens holder having an internal thread, the internal thread and the The external thread is used in combination to screw the lens barrel into the mirror holder.