TWI385458B - Camera module and the lens module thereof - Google Patents

Description

Camera module and lens module for its application

The invention relates to a camera module and a lens module thereof, in particular to a camera module capable of emitting moisture and a lens module thereof.

With the development of multimedia technology, digital cameras and video cameras are increasingly favored by consumers. People are increasingly pursuing miniaturization of digital cameras and video cameras. At the same time, portable electronic devices such as mobile phones are light and thin, and easy to carry. People want to be able to capture the image of the object on the mobile phone, and get a clear picture, which requires the design and manufacture of a digital camera module that can be easily installed in a mobile phone. Due to the small size of the mobile phone, the volume of the digital camera module installed therein is required to be higher, that is, the digital camera module of the mobile phone needs to be smaller in size, thereby shooting an object Image quality puts forward higher requirements, that is, while the volume is reduced, the image of the object is still clear, and the image quality of the object depends to a large extent on the advantages and disadvantages of the optical components in the digital camera, such as lens and image sense. Measuring component.

A conventional digital camera module generally includes a lens holder, a lens barrel, a plurality of lenses, and an image sensing element. The plurality of lenses are usually fixed in the lens barrel by an adhesive, and a closed space between the lens and the lens is provided. . However, in the high-humidity reliability test of the camera lens module, due to the water absorption of the rubber material or the small gap caused by the package, the moisture can no longer escape into the lens, so that the water vapor condenses on the surface of the lens. , reducing the transmittance of the lens, seriously reducing the exposure of the subject into the digital camera module The reflected light reduces the optical image signal of the object, so that the optical image signal sensed by the image sensing component is incomplete, and the imaging quality of the image captured by the digital camera is lowered.

In view of this, it is necessary to provide a camera module capable of dispersing moisture and improving image quality.

In addition, it is necessary to provide a lens module that can disperse moisture and improve image quality.

A camera module includes a lens module and an image sensing device, the lens module includes a lens barrel, a plurality of lenses, and a spacing device disposed between adjacent lenses, wherein at least one through hole is defined in the sidewall of the lens barrel. The spacer device is provided with an air passage communicating with the through hole, and the lens and the spacing device are received and held in the lens barrel; the image sensing device is disposed on the imaging surface of the lens group formed by the plurality of lenses.

A lens module includes a lens barrel, a plurality of lenses, and a spacing device disposed between the adjacent lenses, wherein at least one through hole is defined in the sidewall of the lens barrel; the spacer device is provided with an air passage communicating with the through hole, and the spacer The lens and the spacer are housed and held in the lens barrel.

Compared with the prior art, the camera module and the lens module thereof are used to open a through hole in the lens barrel, and an air passage is arranged between the lenses, so that moisture entering between the lenses can be dissipated from the lens barrel. Thereby improving the image quality.

Please refer to FIG. 1 to FIG. 3, the first preferred embodiment of the camera module of the present invention. The method includes a lens module (not shown) and an image sensing device 40. The lens module includes a lens barrel 10, a plurality of lenses 20, and a spacing device (not shown) disposed between adjacent lenses. The lens 20 and the spacer are held and housed in the lens barrel 10. The image sensing device 40 is placed behind the complex lens 20 and disposed on the imaging surface of the lens group composed of the complex lens 20.

The lens barrel 10 is made of a plastic material and is a hollow cylinder. The lens barrel 10 includes a side wall 12, and the side wall 12 defines at least one through hole 14 having a certain width. In the present embodiment, the number of the through holes 14 is twenty, which are evenly distributed in four rows along the axial direction of the lens barrel 10, and have a certain distance between adjacent through holes 14 in the same column.

The lens 20 is a spherical or aspherical lens for concentrating incident light onto the image sensing device 40 of the camera. The lens 20 includes an optical portion 201 and a base 203. The optical portion 201 is located in the middle of the base 203.

The spacer device is disposed between the adjacently disposed lenses 20 and is housed and held in the lens barrel 10 together with the lens 20. In the present embodiment, the spacer includes four spacer blocks 32 extending from the base 203 of the lens 20 and air passages defined by the four spacer blocks 32. The spacer block 32 is used to limit the distance between adjacent lenses 20 so that the optical effect of the combination of the lenses 20 is better. The height of the spacer block 32 is equal to the height of the through hole 14 in the lens barrel 10, and the width of the spacer block 32 is slightly smaller than the width of the through hole 14. The spacer block 32 is integrally formed with the lens 20 or separately disposed and bonded together, and the spacer block 32 is made of a hard material, and does not undergo elastic deformation when pressed.

When the lens 20 and the spacer block 32 are housed and held in the lens barrel 10, the lens 20 And the spacer block 32 is in contact with the side wall 12 of the lens barrel 10, and the spacer block 32 corresponds to the through hole 14. Since the width of the spacer block 32 is smaller than the width of the through hole 14, the water vapor permeable interval between the adjacent lenses 20 The air passage defined by block 32 and the corresponding portion of the through hole 14 are dissipated.

Obviously, the air passage can be disposed corresponding to the through hole 14 , and the width of the spacer block 32 is not limited to be smaller than the width of the through hole 14 , and the water vapor between the adjacent lenses 20 can pass through the corresponding portion of the air passage and the through hole 14 . Dissipate.

As shown in FIG. 4 to FIG. 6 , the second preferred embodiment of the camera module of the present invention is the same as the lens barrel 10 , the lens 20 , and the image sensing device 40 of the first preferred embodiment. A spacer of a preferred embodiment is replaced by an spacer ring 34. The spacer ring 34 is a ring having a height equal to the height of the through hole 14 in the lens barrel 10, and a light passing hole 342 is disposed in the middle of the spacer ring 34. The outer diameter of the spacer ring 34 is equal to the outer diameter of the lens 20, and the size of the light-passing hole 342 is greater than or equal to the size of the optical portion 201, so that the spacer ring 34 does not affect the optical performance of the optical portion 201. The spacer ring 34 is provided with an air passage. In the present embodiment, the air passage is formed by a plurality of gaps 346 which are respectively formed at opposite upper and lower surfaces of the spacer ring 34, and the notch 346 corresponds to the through hole 346.

The spacer ring 34 is disposed between the adjacently disposed lenses 20 and is housed and held in the lens barrel 10 together with the lens 20. When the lens 20 and the spacer ring 34 are received and held in the lens barrel 10, the lens 20 and the spacer ring 34 are in contact with the side wall 12 of the lens barrel 10, and the notch 346 on the spacer ring 34 and the through hole 14 in the lens barrel 10 are provided. Correspondingly, the moisture between the adjacent lenses 20 can be dissipated through the portion of the notch 346 corresponding to the through hole 14. In addition, the shape of the light-passing hole 342 is preferably the same as the shape of the optical portion 201; the spacer ring 34 and the lens 20 The outer circumferential diameters are matched with the inner circumferential diameter of the lens barrel 10. Obviously, the notch 346 on the spacer ring 34 can be replaced by a vent hole provided on the sidewall of the spacer ring 34. The vent hole is one or more through holes and corresponds to and partially overlaps the through hole 14 in the lens barrel 10. .

It can be understood that the same row of through holes 14 distributed along the axial direction of the lens barrel 10 can also be merged into one of the long holes of the side wall 12 of the lens barrel 10 along the axial direction of the lens barrel, and the two ends of the long hole are respectively close to the lens barrel 10 At both ends, the long hole can be provided only on the lens barrel 10 for the moisture between the plurality of lenses 20 to escape.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and those skilled in the art will be able to make equivalent modifications or variations in accordance with the spirit of the present invention. It should be covered by the following patent application.

10‧‧‧Mirror tube

12‧‧‧ side wall

14‧‧‧through hole

20‧‧‧ lens

201‧‧‧Optical Department

203‧‧‧Base

32‧‧‧ interval block

34‧‧‧Isolation ring

342‧‧‧Lighting hole

346‧‧‧ gap

40‧‧‧Image sensing device

1 is a schematic view showing the assembly of a first preferred embodiment of the camera module of the present invention.

2 is an exploded perspective view of a first preferred embodiment of the camera module of the present invention.

Figure 3 is a cross-sectional view taken along line III-III of Figure 1.

4 is an assembled view of a second preferred embodiment of the camera module of the present invention.

FIG. 5 is an exploded perspective view of a second preferred embodiment of the camera module of the present invention.

Figure 6 is a cross-sectional view taken along line VI-VI of Figure 4.

10‧‧‧Mirror tube

12‧‧‧ side wall

14‧‧‧through hole

32‧‧‧ interval block

Claims (14)

A camera module includes a lens module including a lens barrel, a plurality of lenses, and a spacing device disposed between adjacent lenses, wherein at least one through hole is defined in the sidewall of the lens barrel, and the spacer device is disposed on the spacer The through hole communicates with the air passage, the lens and the spacing device are housed and held in the lens barrel, and an image sensing device is disposed on the imaging surface of the lens group formed by the plurality of lenses. The camera module of claim 1, wherein the plurality of through holes are distributed in a plurality of rows along the axial direction of the lens barrel, and a certain distance between adjacent through holes in the same column. The camera module of claim 2, wherein the lens is a spherical or aspherical optical lens, comprising an optical portion and a base, the optical portion being located in the middle of the base. The camera module of claim 3, wherein the spacer device is a plurality of spacer blocks extending from the lens base, and the air passage is defined by adjacent spacer blocks. The camera module of claim 4, wherein the spacer block is integrally formed with the lens or is separately disposed and bonded together. The camera module of claim 3, wherein the spacer is an isolation ring, and the isolation ring is a ring. The camera module of claim 6, wherein the air passage is a plurality of notches respectively formed on the upper and lower surfaces of the isolation ring, or a vent hole formed in the side wall of the isolation ring. The camera module of claim 1, wherein the through hole is a mirror A long hole is formed in the sidewall of the cylinder along the axial direction of the lens barrel, and the two ends of the long hole are respectively close to the two ends of the lens barrel. A lens module includes: a lens barrel having at least one through hole in the side wall of the lens barrel; a plurality of lenses; and a spacing device disposed between the adjacent lenses, wherein the spacing device is provided with an air passage communicating with the through hole, And the lens and the spacer are housed and held in the lens barrel. The lens module of claim 9, wherein the plurality of through holes are distributed in a plurality of rows along the axial direction of the lens barrel, and a certain distance between adjacent through holes in the same column. The lens module of claim 9, wherein the lens is a spherical or aspherical optical lens, comprising an optical portion and a base, the optical portion being located in the middle of the base. The lens module of claim 11, wherein the spacer device is a plurality of spacer blocks extending from the lens base, and the spacer block is integrally formed with the lens or independently disposed and bonded together, and the air passage is phased. The adjacent spacer block is defined. The lens module of claim 11, wherein the spacer is an isolation ring, and the isolation ring is a ring. The lens module of claim 13, wherein the air passage is a plurality of notches formed by the upper and lower surfaces of the isolation ring being spaced apart from each other, or a vent hole formed on the side wall of the isolation ring.