CN103149656B - Camera lens module - Google Patents

Abstract

A lens module, comprising a lens barrel and a lens seat, the lens barrel is accommodated in the lens barrel seat, the lens barrel includes a first hollow circular truncated portion and a first hollow cylindrical portion, the first hollow circular truncated portion is located One end of the first hollow cylindrical part, the mirror base includes a second hollow circular truncated part and a second hollow cylindrical part, the second hollow circular truncated part extends from one end of the second hollow cylindrical part, the first The hollow circular truncated part and the second hollow circular truncated part are both located on the object side of the lens module and gradually decrease in the outer direction toward the object side, and the angle between the surface of the first hollow circular truncated part and the optical axis is larger than that of the first hollow circular truncated part. The included angle between the surfaces of the two truncated cones and the optical axis and the outer diameter of the first hollow cylindrical portion is equal to the minimum inner diameter of the second truncated cone so that the lens barrel can be locked into the mirror holder.

Description

Lens module

technical field

The invention relates to a lens module.

Background technique

3C products, such as mobile phones, tablet computers and notebook computers, tend to be light, thin, short and small. Therefore, the camera modules used for shooting daily photos and the camera modules used for video communication, in order to be able to miniaturize For use in 3C products, it must be small enough to prevent the camera module from interfering with other parts due to its large size, making it unusable or unable to be used in a variety of products at the same time.

Traditional lens module lens barrel, lens mount, filter, image sensor and printed circuit board. One or more lenses are placed inside the lens barrel. The upper part of the lens base is circular and symmetrical with the lens barrel, so that the wall thickness of the injection molding is uniform and the volume is minimized; the lower part is rectangular and symmetrical with the image sensor, so that there is enough space to place the image sensors and other passive components. A glass plate used to filter the desired spectrum, usually round and rectangular. The image sensor is used to display the image of the subject passing through the lens. The printed circuit board is used to connect the image sensor and serve as the medium of the terminal application product, so that the terminal application product can be driven and conducted when the camera module is used; in addition, it is also used as the carrier board of the lens module, providing sufficient area Allows the mirror mount to attach to it.

When a traditional lens module is installed in a mobile phone, a tablet computer or a notebook computer, the volume is relatively large. Therefore, in order to reserve enough space for the mobile phone and computer to place the lens module to avoid interference with other parts, its volume will be relatively large. Larger, does not meet the design requirements of light, thin, short, and small products.

Contents of the invention

In view of this, it is necessary to provide a smaller lens module.

A lens module, comprising a lens barrel and a lens seat, the lens barrel is accommodated in the lens barrel seat, the lens barrel includes a first hollow circular truncated portion and a first hollow cylindrical portion, the first hollow circular truncated portion is located Extended from one end of the first hollow cylindrical portion, the mirror base includes a second hollow circular truncated portion and a second hollow cylindrical portion, the second hollow circular truncated portion extends from one end of the second hollow cylindrical portion, the The first hollow circular truncated portion and the second hollow circular truncated portion are both located on the object side of the lens module and gradually decrease outward toward the object side, and the angle between the surface of the first hollow circular truncated portion and the optical axis is greater than the specified angle. The angle between the surface of the second truncated circular portion and the optical axis and the outer diameter of the first hollow cylindrical portion is equal to the minimum inner diameter of the second circular truncated portion to lock the lens barrel into the lens holder.

Compared with the prior art, the lens barrel and the object side part of the lens mount of the lens module in the embodiment of the present invention are in the shape of a truncated cone, thereby reducing the volume of the lens barrel and the mirror mount, making the lens module smaller.

Description of drawings

FIG. 1 is a schematic diagram of a lens module according to an embodiment of the present invention.

FIG. 2 is an exploded view of the lens module according to the embodiment of the present invention.

Fig. 3 is a side view of the lens module according to the embodiment of the present invention.

Description of main component symbols

Lens module 10 lens barrel 11 The first hollow circular truncated part 111 first hollow cylinder 112 external thread 1120 mirror mount 12 The second hollow circular truncated part 121 Second hollow cylindrical part 122 square part 123 internal thread 1220 lens 13 filter 14 image sensor 15 A printed circuit board 16

The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.

detailed description

Referring to Fig. 1, Fig. 2 and Fig. 3, the lens module 10 provided by the embodiment of the present invention includes a lens barrel 11, a lens holder 12, a lens 13, a filter 14, an image sensor 15 and a printed circuit board 16, the lens module The optical axis of 10 is denoted as L.

The lens barrel 11 includes a first hollow circular truncated portion 111 and a first hollow cylindrical portion 112. The first hollow circular truncated portion 111 extends from one end of the first hollow cylindrical portion 112 to the object side of the lens module 10, and the first hollow circular truncated portion 111 The outer diameter of the first hollow cylindrical portion 112 gradually decreases toward the object side, that is, the surfaces of the first hollow cylindrical portion 111 intersect at the object side. The angle L between the surface of the first hollow circular truncated portion 111 and the optical axis is denoted as ,in, Greater than 0 degrees and less than or equal to 63.43 degrees. The outer surface of the first hollow cylindrical portion 112 has external threads 1120 .

The height of the first hollow circular truncated portion 111 is denoted as a, and the height of the lens barrel 11 is denoted as b, where b is greater than a, and b=5.55a. In this embodiment, a=1mm, b=5.55mm.

The lens 13 and the optical filter 14 are all located in the lens barrel 11. The number of the lens 13 varies with the lens module 10 specifications and performances, and there are various numbers and shapes. The optical filter 14 is located on the image side of the lens barrel 11. one end.

The mirror base 12 is used to carry the lens barrel 11, and includes a second hollow circular truncated portion 121, a second hollow cylindrical portion 122 and a square portion 123, the second hollow cylindrical portion 122 is located between the second hollow circular truncated portion 121 and the square portion 123, and The second hollow circular truncated portion 121 is close to the object side, and the square portion 123 is close to the image side. The outer diameter of the second hollow circular truncated portion 121 gradually decreases from the second hollow cylindrical portion 122 to the object side, that is, the surface of the second hollow circular truncated portion 121 is in the The object side intersects. The angle between the surface of the second hollow circular truncated portion 121 and the optical axis L is denoted as ,in, greater than 0 degrees and less than or equal to 19.37 degrees, and less than . The inner surface of the mirror base 12 has an internal thread 1220 , and the lens barrel 11 is screwed into the mirror base 12 through the cooperation of the external thread 1120 and the internal thread 1220 .

In addition, the first hollow truncated portion 111 and the extended portion of the lens barrel 11 should be located inside the lens base 12 and the extended portion, in other words, the first hollow truncated portion 111 is located inside the second hollow truncated portion 121 .

In addition, the outer diameter of the first hollow cylindrical portion 112 is equal to the smallest inner diameter of the second hollow circular truncated portion 121 , so that the lens barrel 11 can be locked into the lens holder 12 .

The square portion 123 is used to place the image sensor 15; in addition, when the optical filter 14 is square, the optical filter 14 is also located in the square portion 123 of the mirror holder 12, and the optical filter 14 is located between the lens barrel 11 and the image sensor 15 The interval is used to screen the spectrum required by the lens module 10.

The height of the second hollow circular truncated portion 121 is denoted as C, and the height of the mirror base 12 (including the second hollow circular truncated portion 121, the second hollow cylindrical portion 122 and the square portion 123) is denoted as H, wherein H is greater than C, and H= 3.01C. In this embodiment, H=3.85mm, C=1.28mm.

In other embodiments, the values of H and C will vary with the design of the lens module 10 .

The printed circuit board 16 is used to connect the image sensor 15, and is used as a medium for terminal application products (such as cameras, computers, etc.), so that when the terminal application products need to use the lens module 10, it can be driven and conducted; in addition, the printed circuit board 16 The board 16 is also used as the carrier board of the lens module 10, providing enough area for the mirror base 12 to be attached thereon.

Since the object side parts of the lens barrel 11 and the lens base 12 of the lens module 10 are in the shape of a truncated cone, the volumes of the lens barrel 11 and the lens base 12 are reduced, and the lens module 10 has a smaller volume.

It can be understood that those skilled in the art can also make other changes within the spirit of the present invention to be used in the design of the present invention, as long as they do not deviate from the technical effects of the present invention. These changes made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims (5)

1. a kind of camera lens module, including the lens barrel and microscope base set with optical axis, the lens barrel are contained in the lens cone seat, its feature It is：The lens barrel includes the first hollow round table portion and the first hollow cylindrical, and the first hollow round table portion is located at described the One end of one hollow cylindrical, the microscope base includes the second hollow round table portion and the second hollow cylindrical, the second hollow circle Platform portion is extended by one end of second hollow cylindrical, and the first hollow round table portion and the second hollow round table portion are respectively positioned on institute The thing side and outer radial thing side for stating camera lens module are gradually reduced, the angle between the surface in the first hollow round table portion and optical axis External diameter more than the angle between the surface in the second round platform portion and optical axis and first hollow cylindrical is equal to described the The minimum diameter in two round platform portions is so that the lens barrel is locked in the microscope base, and the height in the first hollow round table portion is denoted as a, institute The height for stating lens barrel is denoted as b, wherein, b=5.55a, the height in the second hollow round table portion is denoted as C, the height of the microscope base H is denoted as, wherein, H=3.01C.

2. camera lens module as claimed in claim 1, it is characterised in that the surface in the first hollow round table portion and the camera lens Angle between module optical axis is more than 0 degree and is less than or equal to 63.43 degree.

3. camera lens module as claimed in claim 1, it is characterised in that the surface in the second hollow round table portion and the camera lens Angle between module optical axis is more than 0 degree and is less than or equal to 19.37 degree.

4. camera lens module as claimed in claim 1, it is characterised in that first hollow cylindrical has external screw thread, described Microscope base has internal thread, and the lens barrel is contained in the microscope base by the cooperation of the internal thread and external screw thread.

5. camera lens module as claimed in claim 1, it is characterised in that the microscope base further comprises a square department, described Two hollow cylindricals are located between the second hollow round table portion and the square department.