CN111487729A

CN111487729A - Optical device coupling UV glue dispensing method

Info

Publication number: CN111487729A
Application number: CN202010280257.2A
Authority: CN
Inventors: 严伟; 付胜; 柯健
Original assignee: Wuhan Yusheng Optical Devices Co ltd
Current assignee: Wuhan Yusheng Optical Devices Co ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2020-08-04

Abstract

The invention discloses an optical device coupling UV glue dispensing method, wherein 4 UV glue dispensing points are dispensed on a PCB, namely a first UV glue dispensing point, a second UV glue dispensing point, a third UV glue dispensing point and a fourth UV glue dispensing point, a first short line glue dispensing point is arranged between the first UV glue dispensing point and the second UV glue dispensing point, and a second short line glue dispensing point is arranged between the third UV glue dispensing point and the fourth UV glue dispensing point; and bonding the bottom surface of the lens bottom shell on the PCB through first UV glue dispensing, second UV glue dispensing, third UV glue dispensing, fourth UV glue dispensing, first stub glue dispensing and second stub glue dispensing, and reinforcing glue between two sides of the bottom of the lens bottom shell and the PCB. The thrust of the invention meets the requirements, the performance is qualified, and almost no change is caused after UV; after the reinforcing glue is piled up, the thrust meets the requirement, and the indexes are almost unchanged after the performance of the reinforcing glue is supplemented.

Description

Optical device coupling UV glue dispensing method

Technical Field

The invention belongs to the technical field of optical device connection, and particularly relates to an optical device coupling UV glue dispensing method which is applicable to the COB coupling field of optical devices.

Background

The existing optical device coupling UV glue dispensing modes comprise four-point glue dispensing, six-point glue dispensing, two-line drawing and the like, wherein the four-point glue dispensing and the wire drawing glue dispensing modes are two main glue dispensing modes at present, and because the reinforcing glue needs to be piled up for reinforcing and curing after the UV glue is dispensed, the stress of the reinforcing glue is larger than that of the UV glue, the overall stress of the lens is changed when the glue dispensing mode and the glue dispensing amount are controlled to directly influence the piling up of the reinforcing glue, and the performance of a product is further influenced.

Disclosure of Invention

The invention aims to avoid the defects in the prior art, provides a method for dispensing an optical device coupling UV glue, and solves the problem that the thrust does not meet the requirement after the UV glue is dispensed or the thrust does not meet the requirement after the reinforcement glue is stacked in the prior dispensing mode.

The aim of the invention is achieved by the following technical measures:

a method for dispensing UV glue in coupling of an optical device comprises the following steps:

step 1, dispensing 4 UV dispensing points on the PCB, namely a first UV dispensing point, a second UV dispensing point, a third UV dispensing point and a fourth UV dispensing point, wherein a first short line dispensing point is arranged between the first UV dispensing point and the second UV dispensing point, a second short line dispensing point is arranged between the third UV dispensing point and the fourth UV dispensing point, the first UV dispensing point and the second UV dispensing point are positioned at two ends of one side of the bottom surface of the lens bottom shell, the third UV dispensing point and the fourth UV dispensing point are positioned at two ends of the other opposite side of the bottom surface of the lens bottom shell, the first short line dispensing point and the second short line dispensing point are positioned at two sides of the bottom surface of the lens bottom shell, the length of the first short line dispensing point is 1/4-2/3 of the distance between the first UV dispensing point and the second UV dispensing point, and the length of the second short line dispensing point is 1/4-2/3 of the distance between the third UV dispensing point and the fourth UV dispensing point,

step 2, the bottom surface of the lens bottom shell is bonded on the PCB through first UV glue dispensing, second UV glue dispensing, third UV glue dispensing, fourth UV glue dispensing, first short line glue dispensing and second short line glue dispensing,

and 3, reinforcing glue between the two sides of the bottom of the lens bottom shell and the PCB.

Compared with the prior art, the invention has the following advantages:

1. the thrust after UV meets the requirement, the performance is qualified, and the thrust after UV is almost unchanged;

2. after the reinforcing glue is piled up, the thrust meets the requirement, and the indexes are almost unchanged after the performance of the reinforcing glue is supplemented.

Drawings

FIG. 1 is a schematic diagram of a conventional four-point dispensing method;

FIG. 2 is a schematic diagram of a conventional two-wire dispensing method;

FIG. 3 is a schematic view of a dispensing method according to the present invention;

in the figure: 1-a lens bottom shell; 2-a PCB board; 3-UV dispensing; 301-first UV dispensing; 302-second UV dispensing; 303-third UV dispensing; 304-fourth UV dispensing; 401-first stub dispensing; 402-second stub dispensing.

Detailed Description

The present invention will be described in further detail with reference to examples for the purpose of facilitating understanding and practice of the invention by those of ordinary skill in the art, and it is to be understood that the present invention has been described in the illustrative embodiments and is not to be construed as limited thereto.

As shown in fig. 1, the existing dispensing method is as shown in fig. 1, and a four-point dispensing method is used, after the UV glue is dispensed, the performance can meet the requirement, and the pushing force cannot meet the customer requirement;

as shown in fig. 2, another existing dispensing method is as shown in fig. 2, a pull-wire dispensing method is used, the performance and the thrust can meet the requirements after the UV glue is dispensed, and the thrust of the reinforcing glue can not meet the requirements of customers;

as shown in fig. 3, a method for dispensing UV glue in coupling optical devices includes the following steps:

step 1, 4 UV dispensing points are dispensed on the PCB 2, which are respectively a first UV dispensing point 301, a second UV dispensing point 302, a third UV dispensing point 303 and a fourth UV dispensing point 304, a first short line dispensing point 401 is disposed between the first UV dispensing point 301 and the second UV dispensing point 302, a second short line dispensing point 402 is disposed between the third UV dispensing point 303 and the fourth UV dispensing point 304, the first UV dispensing point 301 and the second UV dispensing point 302 are disposed at two ends of one side of the bottom surface of the lens bottom case 1, the third UV dispensing point 303 and the fourth UV dispensing point 304 are disposed at two ends of the other opposite side of the bottom surface of the lens bottom case 1, the first short line dispensing point 401 and the second short line dispensing point 402 are disposed at two sides of the bottom surface of the lens bottom case 1, the length of the first short line dispensing point 401 is 1/4-2/3 of the distance between the first UV dispensing point 301 and the second UV dispensing point 302, in this embodiment, the length of the first short line dispensing point 401 is 1/2 of the distance between the first UV dispensing point 301 and the second UV dispensing point 302, the length of the second short-line dispensing 402 is 1/4-2/3 of the distance between the third UV dispensing 303 and the fourth UV dispensing 304, and in the embodiment, the length of the second short-line dispensing 402 is 1/2 of the distance between the third UV dispensing 303 and the fourth UV dispensing 304.

Step 2, the bottom surface of the lens bottom case 1 is bonded to the PCB 2 by the first UV dispensing 301, the second UV dispensing 302, the third UV dispensing 303, the fourth UV dispensing 304, the first stub dispensing 401 and the second stub dispensing 402.

And 3, reinforcing glue between the two sides of the bottom of the lens bottom shell 1 and the PCB 2.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. An optical device coupling UV glue dispensing method is characterized by comprising the following steps:

step 1, 4 UV dispensing points are dispensed on the PCB (2), namely a first UV dispensing point (301), a second UV dispensing point (302), a third UV dispensing point (303) and a fourth UV dispensing point (304), a first short line dispensing point (401) is arranged between the first UV dispensing point (301) and the second UV dispensing point (302), a second short line dispensing point (402) is arranged between the third UV dispensing point (303) and the fourth UV dispensing point (304), the first UV dispensing point (301) and the second UV dispensing point (302) are arranged at two ends of one side of the bottom surface of the lens bottom shell (1), the third UV dispensing point (303) and the fourth UV dispensing point (304) are arranged at two ends of the other opposite side of the bottom surface of the lens bottom shell (1), the first short line dispensing point (401) and the second short line dispensing point (402) are arranged at two sides of the bottom surface of the lens bottom shell (1), and the length of the first short line dispensing point (401) is 1/4-2/3 of the distance between the first UV dispensing point (301) and the second UV dispensing point (302), the length of the second short-line dispensing (402) is 1/4-2/3 of the distance between the third UV dispensing (303) and the fourth UV dispensing (304),

step 2, the bottom surface of the lens bottom case (1) is bonded on the PCB (2) through a first UV dispensing (301), a second UV dispensing (302), a third UV dispensing (303), a fourth UV dispensing (304), a first short-line dispensing (401) and a second short-line dispensing (402),

and 3, reinforcing glue between the two sides of the bottom of the lens bottom shell (1) and the PCB (2).