TWI449984B - Micro lens focusing module outside the frame cover structure - Google Patents

Description

Micro lens focusing module outside frame structure

The invention relates to a frame structure of a micro lens focusing module, in particular to a micro lens autofocus module, which uses a two-layer structure of an outer frame cover to form an inner elastic element and a top lens to maintain a lens movement. Activity space.

Due to advances in technology, the size of digital cameras has been reduced considerably, and most of the current mobile phones have digital camera functions, which are attributed to the modularization and miniaturization of the camera lens. There are many types of autofocus drive structures. Currently, the most commonly used voice coil motor (VCM) is suitable for micro lens autofocus because of its small size, low power consumption, accurate motion displacement and low price. Short-range drive.

FIG. 1 is a partial perspective exploded view of a conventional VCM lens autofocus module, and FIG. 2 is a schematic view of the combined schematic view and FIG. 3 is a schematic view of the AA cross-section of FIG. The outer cover 1 is provided with a top elastic piece 2, and the upper elastic piece 2 is provided with an outer edge fixing portion and an inner edge movable portion, and the inner edge movable portion is coupled to a lens carrier, the lens bearing seat It can carry a lens inside.

There is a movable space between the outer cover 1 and the upper elastic piece 2, and a spacer 3 is disposed between the outer cover 1 and the upper elastic piece 2 for fixing the outer edge fixing portion of the upper elastic piece 2. And the movable space formed between the upper elastic piece 2 and the outer cover 1 can move the lens up and down to focus.

However, the conventional structure has a more padded part. In addition to causing an increase in cost, a procedure is added to the assembly to increase the burden of assembly. Therefore, the inventor of the present invention has devoted himself to saving a pad. A movable space for fixing the upper elastic piece 2 by changing the top structure of the outer frame cover and forming a moving distance of the lens is proposed, thereby reducing the cost and assembly process of the module.

The main object of the present invention is to provide a frame cover structure outside the lens focus module, which can save the components of a pad member to reduce the cost and assembly process of the module.

In order to achieve the above object, the outer frame cover structure of the lens focusing module of the present invention has a two-layer stepped structure extending inwardly and upwardly at the outer edge of the outer surface of the outer frame cover, so that the elastic elements can be directly combined in the frame. The uppermost end of the outermost edge of the outer frame cover is located at the uppermost end of the outer frame cover, and can maintain a movable space for moving the lens with the top surface of the outer frame cover.

In order to enable the reviewing committee to further understand the techniques, means, and effects of the present invention in order to achieve the intended purpose, refer to the following detailed description of the invention and the accompanying drawings. The invention is to be understood as being limited and not limited by the scope of the invention.

As shown in FIG. 4 , it is a perspective exploded view of an embodiment of the micro lens focusing module of the present invention. The micro lens focusing structure of the present invention includes a carrier 10 , a coil component 20 , a frame 30 , and four magnetic components 40 . An elastic member 50, an outer frame cover 60, a lower cover 70 and a lens 80.

The carrier 10 is used to carry the lens 80, and has a hollow shaft hole structure at the center, and is provided with a thread on the inner edge of the shaft hole, and can be locked with the screw on the outside of the lens 80 to lock the lens 80 to the lens 80. The carrier 10 has a hollow shaft hole. The carrier 10 is externally covered with the coil element 20.

The frame 30 is in a cubic hollow structure, and the four magnetic elements 40, such as magnets, are accommodated in the hollow of the vertical surface, and the carrier 10 is received at the center of the hollow structure of the frame 30, and the carrier 10 is only The linear movement of the light entering direction can be performed in the frame 30.

Please refer to FIG. 5 , which is a perspective view of an embodiment of the outer frame cover of the present invention, and FIG. 6 is a schematic cross-sectional view of the BB of FIG. 5 , and the outer edge of the top surface of the outer frame cover 60 is configured to be inwardly retracted. And the upwardly extending two-layered stepped structure 61, such that the elastic member 50 can be directly combined at the uppermost end of the outer frame cover 60, and can maintain a movable space for lens movement with the top surface of the outer frame cover 60.

Preferably, the outer frame cover 60 can be made of metal to protect the entire lens focus module to prevent electromagnetic interference and serve as an electrostatic protection.

In summary, the present invention utilizes the above-described outer frame cover structure, which saves the cost of a pad member, and can reduce the procedure of the combination pad member when combined. Therefore, the present invention can provide the technology disclosed above. A design that is different from the well-known person can improve the overall use value, and it has not been seen in the publication or public use before the application. Cheng has already met the requirements of the invention patent, and has filed an invention patent application according to law.

However, the drawings and descriptions disclosed above are only examples of the present invention, and those skilled in the art can make various other modifications according to the above description, and these changes still belong to the inventive spirit of the present invention. The scope of the patents defined below.

1. . . Cover

2. . . Upper shrapnel

3. . . Cushion

10. . . Carrier

20. . . Coil element

30. . . frame

40. . . Four magnetic components

50. . . Elastic component

60. . . Frame cover

61. . . Stepped structure

70. . . lower lid

80. . . Lens

Figure 1 is a partial perspective exploded view of a conventional VCM lens autofocus module;

Figure 2 is a schematic perspective view of the combination of the figure 1;

Figure 3 is a schematic view of the A-A section of Figure 2;

Figure 4 is a perspective exploded view of an embodiment of the present invention;

Figure 5 is a perspective view showing an embodiment of the outer frame cover of the present invention;

Figure 6 is a side cross-sectional view showing the outer frame cover of the present invention combined with the elastic member.

50. . . Elastic component

60. . . Frame cover

61. . . Stepped structure

Claims (5)

The lens focusing module has a frame structure, and the lens focusing module comprises at least: a frame, which has a cubic hollow structure, and a hollow magnetic part surrounds four magnetic components; a bearing seat has a hollow shaft hole structure and a shaft The hole carries a micro lens; at least one elastic component is provided with an outer edge fixing portion and an inner edge movable portion, the central hollow is corresponding to the shaft hole of the bearing seat; and an outer frame cover is arranged at the outer edge of the top surface thereof The two-stepped structure extending inwardly and upwardly allows the elastic member to be directly combined at the uppermost end of the outer frame cover, and can maintain a movable space for lens movement with the top surface of the outer frame cover. The frame cover structure of the lens focus module of claim 1, wherein the outer edge fixing portion of the elastic member is fixed at an uppermost end of the outermost edge of the outer frame cover. The frame cover structure of the lens focus module of claim 1, wherein the inner edge of the elastic element is coupled to the carrier, and the elastic movable support supports the carrier to hang in the center of the frame, so that You can move up and down the space to focus. The frame cover structure of the lens focus module according to the first aspect of the patent application, wherein the frame cover can be made of metal to protect the entire lens focus module to prevent electromagnetic interference and static electricity protection. The frame cover structure of the lens focus module of claim 1, wherein the cover cover structure further includes a lower cover that can be combined to the bottom of the outer frame cover.