CN110666743A - Assembling mechanism for lens module - Google Patents

Abstract

The invention discloses an assembling mechanism for a lens module. The lens module includes a PCB substrate, a chip, a filter, a bracket and a lens group, the chip is located on the upper surface of the PCB substrate, and the filter is arranged on the upper surface of the PCB substrate. On the upper surface of the chip, the mounting plate of the bracket is located above the filter, the lens group is arranged on the mounting plate of the bracket and the lens group is located above the filter, and the mounting plate of the bracket has at least one through hole , there is a gap between the lower surface of the side plate of the bracket located on the edge of the mounting plate and the upper surface of the PCB substrate, the assembly mechanism includes a suction cup for adsorbing the bracket, and the lower surface of the suction cup is provided with a through hole on the mounting plate The corresponding support column is embedded in the through hole and is in contact with the upper surface of the filter. The present invention can accurately ensure the distance between the lens and the filter in the lens assembly during the assembly process of the lens assembly, which facilitates the assembly of the lens assembly and ensures the accuracy of assembly, and is simple and easy to implement.

Description

Assembly mechanism for lens modules

technical field

The invention relates to a lens module, belonging to the technical field of optical fingerprint modules and cameras.

Background technique

With the development of smart phones, mobile payment and other fields, information security has also received extensive attention, and the Internet mobile terminal has changed from traditional password and gesture recognition to fingerprint recognition. Optical fingerprint sensors have higher resolution than capacitive sensors and are not as susceptible to corrosion, wear and electrostatic interference as capacitive sensors. The lens module in the existing optical recognition assembly needs to adjust the distance between the lens and the imaging area, that is, the focal length, to achieve the best imaging effect. However, the adjustment of the focal length requires the assistance of professionals to operate with tools, which is time-consuming Effort.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an assembling mechanism for the lens module, which can accurately ensure the distance between the lens and the filter in the lens module during the assembly of the lens module. , which facilitates the assembly of the lens module and ensures the accuracy of the assembly, which is simple and easy to implement.

In order to achieve the above object, the technical solution adopted in the present invention is: an assembly mechanism for a lens module, the lens module includes a PCB substrate, a chip, a filter, a bracket and a lens group, and the chip is located on the PCB substrate. the upper surface, the filter is arranged on the upper surface of the chip, the mounting plate of the bracket is located above the filter, the lens group is arranged on the mounting plate of the bracket and the lens group is located above the filter;

At least one through hole is opened on the mounting plate of the bracket, and there is a gap between the lower surface of the side plate of the bracket located at the edge of the mounting plate and the upper surface of the PCB substrate;

The assembling mechanism includes a suction cup for sucking the bracket, the lower surface of the suction cup is provided with a support column corresponding to the through hole on the mounting plate, the support column is embedded in the through hole, and is in contact with the upper surface of the filter.

The further improved scheme in the above technical scheme is as follows:

1. In the above solution, the size of the gap between the lower surface of the side plate of the bracket and the upper surface of the PCB substrate is 5 μm to 100 μm.

2. In the above solution, the gap between the lower surface of the side plate of the bracket and the upper surface of the PCB substrate is filled with an adhesive layer.

3. In the above solution, the lens group further includes a lens barrel and two lenses, and the two lenses are fixed in the lens barrel in parallel.

4. In the above solution, several adsorption holes are evenly arranged on the lower surface of the suction cup.

5. In the above solution, the lens is a convex lens.

6. In the above solution, a drive mechanism is connected to the suction cup.

7. In the above solution, the support column on the suction cup is a metal support column.

Due to the application of the above-mentioned technical solutions, the present invention has the following advantages compared with the prior art:

The present invention is used for the assembly mechanism of the lens module, and the lens group is fixedly installed on the bracket mounting plate, so that the distance between the lens group and the filter is kept in the state with the best imaging effect, and the process of post-focus adjustment is omitted. , which is convenient for subsequent use and saves the time of focusing; secondly, the assembly mechanism includes a suction cup for adsorbing the bracket, the lower surface of the suction cup is provided with a support column corresponding to the through hole on the mounting plate, and the support column is embedded in the through hole , and is in contact with the upper surface of the filter. The setting of the support column on the assembly mechanism can accurately ensure the distance between the lens and the filter in the lens module during the assembly process of the lens module, which is convenient for the lens module. It is simple and easy to assemble and ensure the accuracy of assembly; in addition, only need to adjust the length of the support column to adjust the distance between the lens and the filter of the lens group to suit the needs of different types of chips. The distance between the lens and the filter is always kept optimal to ensure the best visual clarity and effect.

Description of drawings

FIG. 1 is a schematic structural diagram of an assembling mechanism for a lens module according to the present invention.

1. PCB substrate; 2. Chip; 3. Optical filter; 4. Bracket; 41. Mounting plate; 42. Side plate; 5. Lens group; 6. Through hole; 7. Suction cup; 8. Support column; 9. lens barrel; 10, lens; 11, gap; 12, adhesive layer.

Detailed ways

Embodiment 1: an assembly mechanism for a lens module, the lens module includes a PCB substrate 1, a chip 2, a filter 3, a bracket 4 and a lens group 5, and the chip 2 is located on the upper surface of the PCB substrate 1 , the filter 3 is arranged on the upper surface of the chip 2, the mounting plate 41 of the bracket 4 is located above the filter 3, the lens group 5 is arranged on the mounting plate 41 of the bracket 4, and the lens group 5 is located on the filter 3. Above the light sheet 3;

The mounting plate 41 of the bracket 4 is provided with at least one through hole 6, and there is a gap 10 between the lower surface of the side plate 42 of the bracket 4 at the edge of the mounting plate 41 and the upper surface of the PCB substrate 1;

The assembling mechanism includes a suction cup 7 for adsorbing the bracket 4, the lower surface of the suction cup 7 is provided with a support column 8 corresponding to the through hole 6 on the mounting plate 41, the support column 8 is embedded in the through hole 6, and is connected with the filter. The upper surface of the sheet 3 is in contact with the connection.

The size of the gap 10 between the lower surface of the side plate 42 of the above-mentioned bracket 4 and the upper surface of the PCB substrate 1 is 30 μm; the gap 10 between the lower surface of the side plate 42 of the above-mentioned bracket 4 and the upper surface of the PCB substrate 1 is filled with an adhesive layer. 12; The above-mentioned lens group 5 further comprises a lens barrel 9 and two lenses 10, and the above-mentioned two lenses 10 are fixed in the lens barrel 9 in parallel.

Embodiment 2: An assembling mechanism for a lens module, the lens module includes a PCB substrate 1, a chip 2, a filter 3, a bracket 4 and a lens group 5, and the chip 2 is located on the upper surface of the PCB substrate 1 , the filter 3 is arranged on the upper surface of the chip 2, the mounting plate 41 of the bracket 4 is located above the filter 3, the lens group 5 is arranged on the mounting plate 41 of the bracket 4, and the lens group 5 is located on the filter 3. Above the light sheet 3;

The mounting plate 41 of the bracket 4 is provided with at least one through hole 6, and there is a gap 10 between the lower surface of the side plate 42 of the bracket 4 at the edge of the mounting plate 41 and the upper surface of the PCB substrate 1;

The assembling mechanism includes a suction cup 7 for adsorbing the bracket 4, the lower surface of the suction cup 7 is provided with a support column 8 corresponding to the through hole 6 on the mounting plate 41, the support column 8 is embedded in the through hole 6, and is connected with the filter. The upper surface of the sheet 3 is in contact with the connection.

The size of the gap 10 between the lower surface of the side plate 42 of the above-mentioned bracket 4 and the upper surface of the PCB substrate 1 is 40 μm; the lower surface of the above-mentioned suction cup 7 is evenly provided with a number of suction holes; the above-mentioned lens 10 is a convex lens; The above-mentioned suction cup 7 is connected with a driving mechanism ; The support column 8 on the suction cup 7 is a metal support column.

When the above-mentioned assembly mechanism for the lens module is used, the lens group is fixedly mounted on the bracket mounting plate, so that the distance between the lens group and the filter is kept in a state with the best imaging effect, eliminating the need for post-focus adjustment. It is convenient for subsequent use and saves the time for focusing. Secondly, the setting of the support column on the assembly mechanism can accurately ensure the distance between the lens and the filter in the lens module during the assembly process of the lens module, which is convenient for It is simple and easy to assemble the lens module and ensure the accuracy of the assembly; in addition, it is only necessary to adjust the length of the support column to adjust the distance between the lens and the filter of the lens module to suit the needs of different types of chips , so that the distance between the lens and the filter in the lens group is always the best, ensuring the best visual clarity and effect.

The above-mentioned embodiments are only intended to illustrate the technical concept and characteristics of the present invention, and the purpose thereof is to enable those who are familiar with the art to understand the content of the present invention and implement them accordingly, and cannot limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be included within the protection scope of the present invention.

Claims (8)

1. An assembly mechanism for a lens module, characterized in that: the lens module comprises a PCB substrate (1), a chip (2), a filter (3), a bracket (4) and a lens group (5) ), the chip (2) is located on the upper surface of the PCB substrate (1), the optical filter (3) is arranged on the upper surface of the chip (2), and the mounting plate (41) of the bracket (4) is located on the optical filter (3) Above, the lens group (5) is arranged on the mounting plate (41) of the bracket (4) and the lens group (5) is located above the filter (3); The mounting plate (41) of the bracket (4) is provided with at least one through hole (6), and the lower surface of the side plate (42) of the bracket (4) located at the edge of the mounting plate (41) is in contact with the PCB substrate (1). ) with a gap (10) between the upper surfaces; The assembling mechanism includes a suction cup (7) for adsorbing the bracket (4), and a support column (8) corresponding to the through hole (6) on the mounting plate (41) is provided on the lower surface of the suction cup (7). The column (8) is embedded in the through hole (6), and is in contact with the upper surface of the filter (3). 2 . The lens module according to claim 1 , wherein the gap ( 10 ) between the lower surface of the side plate ( 42 ) of the bracket ( 4 ) and the upper surface of the PCB substrate ( 1 ) is 5 μm～ 100μm. 3. The lens module according to claim 1, wherein the gap (10) between the lower surface of the side plate (42) of the bracket (4) and the upper surface of the PCB substrate (1) is filled with glue Adhesive layer (12). 4. The lens module according to claim 1, characterized in that: the lens assembly (5) further comprises a lens barrel (9) and two lenses (10), the two lenses (10) being fixed in parallel on inside the lens barrel (9). 5 . The assembly mechanism for a lens module according to claim 1 , wherein a plurality of suction holes are evenly arranged on the lower surface of the suction cup ( 7 ). 6 . 6. The lens module according to claim 1, wherein the lens (10) is a convex lens. 7 . The assembly mechanism for a lens module according to claim 1 , wherein a driving mechanism is connected to the suction cup ( 7 ). 8 . 8 . The assembly mechanism for a lens module according to claim 1 , wherein the support column ( 8 ) on the suction cup ( 7 ) is a metal support column. 9 .

Images