Patent Application
20220011476
The subject matter herein generally relates to optical lenses, and more particularly to an optical lens of an electronic device.
A lens module includes an aperture and a lens group. Generally, a large distance between the aperture and the lens group may exist, which is not conducive for improving alignment accuracy between the aperture and the lens group. The lens module includes a lens barrel with a receiving space for receiving the lens group. The aperture is directly adhered to an outer surface of the lens barrel by glue. Since the aperture and the lens barrel are not transparent, the glue cannot be cured by ultraviolet light. Therefore, the glue is usually cured by a thermal curing method, which process is not only time-consuming, but also causes a relative position between the aperture and the lens group to shift.
Implementations of the present disclosure will now be described, by way of embodiments, 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. Additionally, 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. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features. The description is not to be considered as limiting the scope of the embodiments described herein.
Several definitions that apply throughout this disclosure will now be presented.
The term “coupled” is defined as connected, whether 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 “comprising” means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in a so-described combination, group, series, and the like.
The electronic device 10 includes an optical lens 20 and a display panel 30. The optical lens 20 is used for receiving a first light (and emitting a second light according to the first light. The first light is the ambient light of the environment in which the electronic device 10 is located. The display panel 30 is coupled to the optical lens 20. In one embodiment, the display panel 30 is coupled to the optical lens 20 through a photoelectric conversion device (not shown). The photoelectric conversion device may be an image sensor. The image sensor can generate image signals according to the second light, and the display panel 30 is used to display an image according to the image signals.
Referring to
The optical lens 20 further includes a first lens 22. The first lens 22 has light transmittance. The first lens 22 is received in the receiving space 213. The first lens 22 is used to receive and at least partially transmit the first light.
The optical lens 20 is further provided with an aperture 23 located in the receiving space 213. The first lens 22 has a surface 221, and the aperture 23 is fixedly arranged on the surface 221 of the first lens 22. In one embodiment, the aperture 23 is fixed on the surface 221 of the first lens 22 by an adhesive.
Referring to
Further referring to
In one embodiment, a line between an optical center of the first lens 22 and a center of the aperture 23 is perpendicular to a plane in which the aperture 23 is located. The above-mentioned structure of the adhesive 27 tightly bonding the aperture 23 and the bonding area 222 greatly reduces a distance between the aperture 23 and the first lens 22, which is beneficial to satisfy alignment accuracy requirements between the aperture 23 and the first lens 22, and thus is beneficial to improve an imaging quality of the optical lens 20. In addition, the aperture 23 is received in the receiving space 213, which is beneficial to reduce an overall thickness of the optical lens 20 (a distance between the first end 211 and the second end 212).
In one embodiment, the adhesive 27 is formed by solidification of liquid glue. The aperture 23 and the first lens 22 are fixedly bonded by the adhesive 27 and then assembled to the lens barrel 21. Since the first lens 22 has light transmittance, the liquid glue can be quickly cured by ultraviolet light from one side of the first lens 22, and an alignment between the aperture 23 and the first lens 22 is not caused to shift.
Referring to
In one embodiment, the optical lens 20 further includes a second lens 24 and a third lens 25. Both the second lens 24 and the third lens 25 are located in the receiving space 213. The aperture 23, the first lens 22, the second lens 24, and the third lens 25 are sequentially arranged in the receiving space 213 along a direction from the first end 211 to the second end 212. Optical centers of the aperture 23, the first lens 22, the second lens 24, and the third lens 25 are on a straight line.
The first lens 22, the second lens 24, and the third lens 25 form an optical path system that focuses at least part of the first light to emit the second light, and the second light is used for imaging. In other embodiments, the optical lens 20 may have more lenses than those described in the present disclosure.
Referring to
In one embodiment, at least one alignment mark (not shown) can be provided in the flange area 262 to improve alignment accuracy between the first lens 22 and the aperture 23. In one embodiment, the alignment mark is a ring. The alignment mark may emit light. In the process of assembling the first lens 22, the alignment mark is irradiated with light, and a black and white image can be obtained by detecting the alignment mark by an optical detector. The present disclosure does not limit the shape and number of the alignment mark.
In one embodiment, the aperture 23 has an annular shape and is provided corresponding to the flange areas 262. That is, an orthographic projection of the aperture 23 on the first lens 22, the second lens 24, and the third lens 25 is located in the flange areas 262. The bonding area 222 is also located corresponding to the flange areas 262.
Referring to
The embodiments shown and described above are only examples. 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.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202010653828.2 | Jul 2020 | CN | national |
