Patent Application
20230171476
The subject matter herein generally relates to optical devices, and more particularly to a lens module and an electronic device including the lens module.
With miniaturization of a lens module, the back focal length of the lens module becomes limited. When the lens module is dropped or impacted, a carrier may be impacted by a lens barrel, causing breakage of an optical filter or an image sensor, resulting in failure of the lens module.
Implementations of the present technology will now be described, by way of embodiment, 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. Some 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 better illustrate details and features of the present disclosure.
Several definitions that apply throughout this disclosure will now be presented.
The term “coupled” is defined as connected, directly or indirectly through intervening components, and is not necessarily limited to physical connections. The connection can be such that the objects are permanently connected or releasably connected. 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.
Referring to
When the lens module 100 is dropped or impacted, the buffer member 11 will absorb force and reduce the shock applied to the carrier 70, reduce an impact applied to the image sensor 50 and the lens assembly 10. Thus, a risk of breakage of the optical filter 50 and the lens assembly 10 is reduced. The reinforcing member 12 is annular and sleeved on the side wall of the lens assembly 10, fixing the lens assembly 10 and improving a structural strength of the lens assembly 10, so as to reduce a risk of loosening and failure of the lens assembly 10.
Referring to
Referring to
In one embodiment, the lens assembly 10 is made by two-color injection molding. That is, the main body 101, the buffer member 11, and the reinforcing member 12 are integrally formed by two-color injection molding. A material of the main body 101 may be, but is not limited to, polycarbonate (PC).
The circuit board 90 may be a flexible board, a rigid board, or a flexible-rigid board. In one embodiment, the circuit board 90 is a flexible-rigid board, and includes a first rigid board portion 901, a second rigid board portion 902, and a flexible board portion 903 located between the first rigid board portion 901 and the second rigid board portion 902. The circuit board 90 further includes a first surface 91 which is close to the carrier 70 and a second surface 92 which is away from the carrier 70. A plurality of electronic components 20 are mounted on the first surface 91 of the first rigid board portion 901. The carrier 70 is fixed on the first surface 91 of the first rigid board portion 901 through a first adhesive layer 41. The carrier 70 and the electronic components 20 are located on the same surface of the circuit board 90. The electronic components 20 may be, but are not limited to, passive components such as resistors, capacitors, diodes, triodes, relays, Electrically Erasable Programmable Read Only Memory (EEPROM) device.
The lens barrel 30 and the carrier 70 are hollow and rectangular. The lens barrel 30 may be fixed on the carrier 70 through a second adhesive layer (not shown). The lens barrel 30 may be made of metal or plastic. In one embodiment, the lens barrel 30 is made of aluminium alloy.
Referring to
Referring to
In one embodiment, the buffer member 11 may be made of, but is not limited to, thermoplastic elastomers (TPE). The TPE is a soft rubber with good elasticity and flexibility. When the lens module 100 is dropped or impacted, the TPE will absorb some impact to provide buffer for the optical filter 50, the image sensor 80, and the lens assembly 10, reducing the risk of breakage.
In one embodiment, the buffer member 11 has a Shore hardness of 10° to 30°, which provides effective buffer for the optical filter 50, the image sensor 80, and the lens assembly 10.
In one embodiment, a material of reinforcing member 12 may include but is not limited to polycarbonate (PC), polystyrene (PS), acrylonitrile butadiene styrene plastic (ABS plastic), acrylonitrile styrene resin (AS), or polyvinyl chloride (PVC).
In one embodiment, the reinforcing member 12 has a Shore hardness of 50° to 80°, which improves a structural strength of the lens assembly, and reduces the risk of loosening of the lens assembly 10. In one embodiment, the reinforcing member 12 has a Shore hardness of 70°.
An impact-simulation test is performed on the lens module 100 shown in
Referring to
While the present disclosure has been described with reference to particular embodiments, the description is illustrative of the disclosure and is not to be construed as limiting the disclosure. Those of ordinary skill in the art can make various modifications to the embodiments without departing from the scope of the disclosure as defined by the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202111420921.X | Nov 2021 | CN | national |
