TWI386697B - Positioning equipment and assembly device for lens module using it - Google Patents

Description

Positioning device and lens module assembly equipment

The invention relates to a positioning device, in particular to a positioning device of a lens barrel and an optical component in a camera module and a lens module assembling device using the positioning device.

In recent years, integration of various functions into mobile phones has become a trend, such as integrating personal digital assistants (PDAs), digital cameras, MP3s, and the like into mobile phones. Among them, the integration of digital cameras into mobile phones has become the mainstream of the current market.

The composition of the digital camera for mobile phones is mainly the combination of the lens module and the photosensitive module to realize image recording. At present, digital cameras in mobile phones in the mainstream market of the past 300,000 yuan, 90% of the process is manual. However, the market expects that manual operations will encounter yield and capacity problems in the process of 1.5 million pixels or more. With the increasing demand for lens modules for digital cameras for mobile phones, the use of automated devices to replace manuals in the mass production of lens modules will become an inevitable trend.

In the process of automatically assembling the lens module, in order to make the optical axis or the central axis of the optical element such as the lens, the spacer, the infrared cut filter (IR-Cut) in the lens barrel and the center of the lens barrel Axis coincidence, generally requires a centering positioning device to position the lens barrel and each optical component, and then use a nozzle to pick up the optical component accurately positioned in a centering device, and assemble the lens barrel disposed in another positioning device. Inside.

Generally, the centering device includes a fixed end and a movable end. The optical element or the lens barrel is located on one side of the fixed end, and the movable end moves toward the fixed end, and the fixed end is pressed and fitted to the optical component or The lens barrel is positioned for centering.

However, the bottom and the side walls of the centering device are likely to accumulate dust, and impurities and the like remain in the assembly process, so that the device is not positioned properly, and the optical component and the lens barrel may be damaged or broken.

In view of this, it is necessary to provide a positioning device that is more precise in positioning and can reduce component damage, and a lens module assembly device.

A positioning device for centering the lens barrel and the optical component when assembling the lens module, comprising a fixed end, a movable end opposite to the fixed end, and a disposed between the fixed end and the movable end A blowing unit, the blowing unit surface is provided with a plurality of air outlets, and during the movement of the movable end toward the fixed end, the blowing unit is compressed, and the gas is ejected from the air outlet to clean the positioning device.

A lens module assembly apparatus includes at least one reclaiming device and at least one of the above positioning devices.

Compared with the prior art, the positioning device is provided with a blowing unit between the fixed end and the movable end, which can effectively and effectively remove the dust inside the positioning device and other impurities that may remain in the positioning device during the assembly process. Thereby, the lens barrel or the optical component can be accurately centered to reduce damage of the component.

The invention will be further described in detail below with reference to the accompanying drawings.

Please refer to FIG. 1 , which is a positioning device 10 and a lens barrel 20 according to an embodiment of the present invention.

The positioning device 10 is configured to center the optical element such as the lens barrel 20 and the lens, the spacer, the infrared cut filter, etc., so that the optical axis or the central axis of the optical element can be combined with the lens barrel 20 after being assembled into the lens barrel 20 The center axes are better coincident. This embodiment will be described by taking the centering of the lens barrel 20 as an example. The positioning device 10 includes a fixed end 102, a movable end 104 and two blowing units 106.

One side of the fixed end 102 includes a curved surface whose arc corresponds to the curvature of the outer side of the lens barrel 20. One side of the movable end 104 also includes a curved surface corresponding to the curvature of the outer side of the lens barrel 20. When the lens barrel 20 is positioned, the lens barrel 20 and one side of the fixed end 102 including the curved surface are abutted, and the movable end 104 is moved toward the fixed end 102, so that the movable end 104 includes the curved surface. The one side is urged toward the lens barrel 20, and the lens barrel 20 is centered by the pressing force of the fixed end 102 and the movable end 104 against the lens barrel 20.

The air blowing unit 106 is used for cleaning dust and other debris inside the positioning device 10, and is disposed at two sides of the fixed end 102 for setting the curved surface of the lens barrel 20. The air blowing unit 106 is disposed on the side of the fixed end 102 by sticking or embedding. The air blowing unit 106 includes a body portion 1062 having a cavity inside and a plurality of air outlets 1064 disposed on the surface of the body portion 1062. The air blowing unit 106 has compressible properties, and the interior of the body portion 1062 is compressed. The gas is pressurized by the air outlet 1064, and the inside of the positioning device 10 is cleaned by the impact of the gas ejected from the air outlet 1064. There are three air outlets 1064 in this embodiment, and the air outlets 1064 are respectively in the upper, middle and lower portions of the positioning device 10.

The air blowing unit 106 of the present embodiment is a rectangular parallelepiped. It will be understood that the air blowing unit of the present invention may have other shapes, such as the air blowing unit 106' having the spherical body portion 1062' as shown in FIG. It can also be understood that the number of the air outlets of the air blowing unit is not limited to three, and may be more or less. As shown in FIG. 5, the air blowing unit 106 having five air outlets 1064" is not limited to this. Example.

Please refer to FIG. 2 and FIG. 3 for the process of positioning the lens barrel 20 of the positioning device 10 of FIG.

Referring to FIG. 2, the lens barrel 20 is abutted against the fixed end 102 of the positioning device 10, so that the outer side of the lens barrel 20 is in contact with the curved side surface of the fixed end 102, and the lens barrel 20 is required due to the precision of the lens. There is still a big error in seeking a heart. The movable end 104 is moved in the direction of the lens barrel 20.

Referring to FIG. 3, during the movement of the movable end 104 in the direction of the lens barrel 20, the side of the movable end 104 starts to contact with the body 1062 of the air blowing unit 106 disposed at the fixed end 102, and begins to compress the body 1062. The gas inside the body 1062 is pressurized outwardly from the air outlet 1064, and the ejected gas cleans the inside of the positioning device 10 to remove dust and other debris from the side walls and the bottom of the positioning device 10. The movable end 104 also contacts the lens barrel 20 with its curved side after moving a distance. The fixed end 102 cooperates with the movable end 104 to achieve the centering positioning of the lens barrel 20.

The centering process of optical components such as lenses, spacers, and infrared cut filters is similar to the centering process of the lens barrel 20.

Please refer to FIG. 6 , which illustrates a lens module assembly apparatus 1 according to an embodiment of the present invention.

The lens module assembly apparatus 1 includes two positioning devices 30 and 40 and a reclaiming device 50. The lens barrel 32 and the optical component 42 to be assembled are respectively centered by the positioning devices 30 and 40 through the positioning methods of FIGS. 2 and 3. For positioning, the optical element 42 of the present embodiment will be described by taking a lens as an example. One end of the take-up device 50 includes a take-up end 502, and the take-up end 502 of the present embodiment is a vacuum nozzle.

The working principle of the lens module assembly apparatus 1 of the present embodiment is as follows: the lens barrel 32 and the optical element 42 are respectively positioned in the positioning devices 30 and 40, and the take-up end 502 of the take-up device 50 sucks the optical component 42 from the positioning device 40. .

The reclaiming device 50 assembles the aspirated optical element 42 into the lens barrel 32 that has been centered.

It can be understood that the air blowing unit 106 of the embodiment can also be disposed on the movable end 104. As long as it is disposed between the fixed end 102 and the movable end 104, the air blowing unit 106 can be compressed to achieve cleaning. The purpose of the positioning device 10 is not limited to the embodiment.

Compared with the positioning device of the prior art, the air blowing unit 106 is disposed between the fixed end 102 and the movable end 104 of the positioning device 10 of the embodiment, and the air blowing unit 106 can be inside the positioning unit 10 during the assembly process. The air blows off the dust and the like inside the positioning device 10, and maintains the cleanliness inside the positioning device 10, thereby improving the assembly accuracy and the assembly yield of the lens module.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make equivalent modifications or changes in accordance with the spirit of the present invention. It should be covered by the following patent application.

Positioning means. . . 10,30,40

Fixed end. . . 102

Mobile end. . . 104

Blowing unit. . . 106,106’,106”

Body part. . . 1062,1062’

Air jet. . . 1064,1064"

Tube. . . 20,32

Optical element. . . 42

Reclaiming device. . . 50

Retrieval end. . . 502

1 is a schematic perspective view of a centering device and a lens barrel according to an embodiment of the present invention; FIG. 2 and FIG. 3 are schematic plan views showing a positioning process of the lens barrel of FIG. 1; FIG. 4 and FIG. A side view of two other embodiments of the air blowing unit; FIG. 6 is a side view of the lens module assembling apparatus of the embodiment of the present invention.

Positioning means. . . 10

Fixed end. . . 102

Mobile end. . . 104

Blowing unit. . . 106

Body part. . . 1062

Air jet. . . 1064

Tube. . . 20

Claims (7)

A positioning device for centering the lens barrel and the optical component when assembling the lens module, comprising a fixed end and a movable end opposite to the fixed end, wherein the positioning device further comprises a blowing unit The air blowing unit is disposed between the fixed end and the movable end, and the air blowing unit surface is provided with a plurality of air outlets, and the air blowing unit is compressed during the moving end to the fixed end, and the gas is blown from the air jet The mouth is ejected and the positioning device is cleaned. The positioning device of claim 1, wherein the blowing unit is a rectangular parallelepiped or a spherical shape. The positioning device according to claim 1, wherein the number of the air outlets is three or five. The positioning device of claim 1, wherein one side of the fixed end and one side of the movable end each include an arc surface, and the arc of the two curved surfaces and the component to be centered The outer arc corresponds to each other. The positioning device of claim 1, wherein the air blowing unit is disposed at a side of the fixed end or the movable end. The positioning device of claim 5, wherein the blowing unit is disposed on the side of the fixed end or the movable end by means of sticking or embedding. A lens module assembling apparatus comprising at least one reclaiming device and at least one positioning device according to any one of claims 1 to 6.