Patent Application
20190170915
The subject matter herein generally relates to image capture, method for manufacturing light shield and camera module using the same.
Generally, a lens module comprises a lens barrel, a shading plate arranged in the lens barrel. However, the light shading plate is formed by printing ink on a predetermined location of a large glass using screen printing, then the large glass is cut into a single plate, and then the single plate is assembled into the lens module. Because screen printing requires the development of molding, this process is time consuming.
Implementations of the present technology will now be described, by way of example only, with reference to the attached figures.
It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, methods, procedures, and components have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the embodiments described herein. The drawings are not necessarily to scale, and the proportions of certain parts may be exaggerated to illustrate details and features of the present disclosure better. The disclosure is illustrated by way of example and not by way of limitation in the figures of the accompanying drawings, in which like references indicate similar elements. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean “at least one.”
Several definitions that apply throughout this disclosure will now be presented.
The term “substantially” is defined to be essentially conforming to the particular dimension, shape, or other feature that the term modifies, such that the component need not be exact. For example, “substantially cylindrical” means that the object resembles a cylinder, but can have one or more deviations from a true cylinder. The term “comprising,” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series, and the like. The references “a plurality of” and “a number of” mean “at least two.”
The lens holder 10 is configured to receive lens module 20, the lens holder 10 can also be a voice coil motor. In the illustrate embodiment, the lens holder 10 comprises a base 12 and a first joint portion 14 protruding from the base 12. The first joint portion 14 is substantially a hollow cylinder and configured to receive the lens module 20. The lens module 20 includes at least one lens.
In the embodiment, the inner surface 103 of the first joint portion 14 includes a plurality of internal threads. The lens module 20 includes a second joint portion 21 matching the shape of the inner surface 103 of the first joint portion 14, the outer surface 203 of the second joint portion 21 includes a plurality of external threads, and the lens camera 20 can thus be screwed into the lens holder 10.
In other embodiments, the lens camera 20 and the lens holder 10 are not threaded combination or are integrally formed in a mold. That is to say, the external threads and the internal threads can be omitted.
The lower end of the inner surface 103 of the base 12 is arranged with a supporting flange 105 extending along a radial direction of the lens holder 10, and the light shielding member 30 is mounted on the supporting flange 105. The light shielding member 30 can be a round shape, a rectangle, or a polygon. In the illustrated embodiment, the light shielding member 30 has a rectangle shape.
The light shielding member 30 includes a transparent plate 31. The light shielding member 30 can be a round shape, a rectangle, or a polygon. The transparent plate 31 is made from glass or plastic. The transparent plate 31 includes a light permeable area 315 and a light shielding area 316 that surrounds the light permeable area 315. In the illustrated embodiment, the light permeable area 315 is a through hole passing through the transparent plate 31.
The light shielding area 316 is an opaque adhesive 318, in the present embodiment, the light shielding area 316 is a black adhesive formed on the light shielding area 316. The opaque adhesive 318 can be formed on one surface of the transparent plate 31 or two opposing surfaces of the transparent plate 31. In the illustrated embodiment, the opaque adhesive 318 is formed on one surface of the transparent plate 31. The light shielding member 30 is fixed on the supporting flange 105 via the opaque adhesive 318.
The supporting flange 105 includes a top surface 106 and a bottom surface 107 opposite to the top surface 106. The light shielding member 30 is mounted on the bottom surface 107 and part of the opaque adhesive 318 is exposed from the supporting flange 105, as shown in
The printed circuit board 40 is a flexible printed circuit board, a rigid-flexible printed circuit board, or a ceramic substrate.
The imaging sensor chip 50 is electrically connected with the printed circuit board 40. The imaging sensor chip 50 includes a plurality of edge connectors 52 (gold fingers) arranged peripherally thereon. The printed circuit board 40 includes a plurality of pads 42, and the pads 42 are electrically connected with the gold fingers 52 via wires, such as gold wires. The printed circuit board 40 is also provided with a number of electronic components 46 to improve performance of the imaging sensor chip 50, for example, the electronic components 46 can be resistors and capacitors. The light shielding element 30 is configured to adsorb light rays reflecting off the wires, and glare is prevented, thus, improving the imaging quality of the lens module 100.
Rim of the second joint portion 21 further comprises a flange 23 thereon, and a number of adjustment bumps 25 are formed on the flange 23. The adjustment bumps 25 can be used in adjusting optical axis of the lens module 20.
The camera module 100 further comprises a plurality of fixing members 60, as shown in
The light permeable area 325 is formed with a functional filter film 330. The functional filter film 330 is one of an infrared light cut-off filter film, an ultraviolet cut-off filter film, a low pass filter film, and an antireflective film. The functional filter film 330 is able to be formed on two opposite surfaces of the light permeable area 325, or formed on only one surface on the light permeable area 325.
At block 501, a large transparent carrier sheet is provided.
At block 502, the transparent carrier sheet is cut into a plurality of transparent plates, each transparent plate defines a light permeable area and a predetermined edge area surrounding the light permeable area.
At block 503, a opaque adhesive is coated on the predetermined edge area to form a light shielding area.
At block 504, a functional filter film 330 is formed on the light permeable area. The functional filter film is one of an infrared light cut-off filter film, an ultraviolet cut-off filter film, a low pass filter film, and an antireflective film.
The embodiments shown and described above are only examples. Therefore, many commonly-known features and details are neither shown nor described. Even though numerous characteristics and advantages of the present technology have been set forth in the foregoing description, together with details of the structure and function of the present disclosure, the disclosure is illustrative only, and changes may be made in the detail, including in matters of shape, size, and arrangement of the parts within the principles of the present disclosure, up to and including the full extent established by the broad general meaning of the terms used in the claims. It will, therefore, be appreciated that the embodiments described above may be modified within the scope of the claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201711281549.2 | Dec 2017 | CN | national |
