TWI420175B - Barrel, lens module having the barrel and method for assembling the lens module - Google Patents

Description

Lens barrel, lens module having the same, and assembly method of the lens module

The present invention relates to the field of optical systems, and in particular, to a lens barrel, a lens module having the lens barrel, and an assembly method of the lens module.

With the development of multi-functional electronic products, lens modules are widely used in consumer electronic products such as mobile phones, notebook computers, digital cameras, and personal digital assistants. While pursuing multi-functionality, people also hope that electronic products have excellent image effects, that is, lens modules are required to have high-quality imaging quality.

The prior optical lens module structure generally includes optical elements such as a plurality of lenses, aperture plates, and filters housed in the lens barrel, and a spacer ring for controlling the distance between the optical elements. Since the lens barrel is generally cylindrical, the optical elements are usually mounted in the lens barrel in the direction of the axis of the lens barrel. In the assembly process of the lens module, most of the optical components are first placed into the lens barrel, and then the last lens is glued to fix all the lenses in the lens barrel. Generally, on the automatic assembly lens, the lens is sucked by vacuum suction and then placed in the lens barrel. Therefore, when a thin lens is used, the lens is slightly deformed due to the vacuum nozzle, so that when the lens is incorporated into the lens barrel, the lens is often unable to be placed smoothly, and the lens group cannot be well performed in the lens barrel. Rely on. Moreover, when the first lens is tilted, the lens cannot be The plane at the bottom of the lens barrel is flat, which often causes the entire lens module to fail, so that all of the optical components will be discarded, resulting in a great waste of the assembly process.

Therefore, it is necessary to provide a lens barrel capable of avoiding deformation of the lens when the lens is assembled, and avoiding a skew condition when the lens is incorporated into the lens barrel, a lens module having the lens barrel, and an assembly method of the lens module.

Hereinafter, a lens barrel, a lens module having the lens barrel, and a method of assembling the lens module will be described by way of embodiments.

A lens barrel for accommodating an optical component, comprising: a side wall and an end portion having an aperture hole at one end of the side wall, the side wall and the end portion each having an inner surface, the lens barrel having at least one groove The at least one groove extends from an inner surface of the side wall to an inner surface of the end portion and terminates at an edge of the aperture hole of the end portion to communicate with the aperture of the aperture.

A lens module includes a lens barrel and a lens, the lens is received in the lens barrel, the lens barrel includes a side wall and an end portion having an aperture hole at one end of the side wall, the side wall and the end portion have An inner surface, the lens barrel having at least one groove extending from an inner surface of the side wall to an inner surface of the end portion and ending at an edge of the aperture hole of the end portion to communicate with the aperture of the aperture.

A method for assembling a lens module, comprising the steps of: providing a lens barrel and a lens to be assembled, the lens barrel comprising a side wall and an end portion having an aperture hole at one end of the side wall, the side wall and the end portion Each having an inner surface, the lens barrel has At least one groove extending from an inner surface of the side wall to an inner surface of the end portion and ending at an edge of the aperture hole of the end portion to communicate with the aperture of the aperture; the lens is placed in the lens barrel And placing the nozzle of the vacuum suction device at the aperture of the end of the lens barrel, sucking the lens to the end portion and making it adhere to the inner surface of the end of the lens barrel; using the glue to drop at least the inner surface of the side wall In a groove, the lens is fixed.

Compared with the prior art, the lens barrel provided by the present invention, the lens module having the lens barrel, and the method for assembling the lens module have the following advantages: since the lens barrel is provided with a plurality of grooves, the lens is in a vacuum suction manner. When assembled into the lens barrel, it can offset the deformation of the lens caused by suction, ensure that the lens fits smoothly with the end of the lens barrel, improve the assembly yield of the lens module; and, when all the lenses are assembled, Dispensing at the groove allows the glue to flow along the groove to the end of the lens barrel, so that several lenses can be simultaneously fixed in the lens barrel to avoid relative movement of the lens in the lens barrel, thereby improving the reliability of the lens module and ensuring The imaging quality of the lens module.

10‧‧‧ side wall

11,22‧‧‧ inner surface

12‧‧‧ outer surface

20‧‧‧End

21‧‧‧ aperture hole

30‧‧‧ lenses

111‧‧‧ trench

121‧‧‧External thread

100‧‧‧ lens barrel

200‧‧‧ lens module

FIG. 1 is a schematic perspective view of a lens barrel according to an embodiment of the present invention.

2 is a top plan view of a lens barrel according to an embodiment of the present invention.

3 is a cross-sectional view of the lens barrel according to the embodiment of the present invention taken along the line III-III of FIG. 1.

4 is a cross-sectional view of a lens module according to an embodiment of the present invention.

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

Please refer to FIG. 1 , FIG. 2 and FIG. 3 , which are diagrams of a lens barrel 100 according to an embodiment of the present invention. The lens barrel 100 is used to house optical components such as lenses and filters. The material can be made of engineering plastics such as polyethylene, polypropylene, polyvinyl chloride or polystyrene. The lens barrel 100 includes a side wall 10 and an end portion 20 having a diaphragm aperture 21.

The side wall 10 has an inner surface 11 and an outer surface 12. The outer surface 12 is formed with an external thread 121.

The end portion 20 is located at one end of the side wall 10, and the end portion 20 and the side wall 10 are integrally formed. This end 20 has an inner surface 22. The center of the end portion 20 has a diaphragm aperture 21.

The inner surface 11 of the side wall 10 and the inner surface 22 of the end portion 20 have a plurality of grooves 111. The groove 111 extends from the inner surface 11 of the side wall 10 to the inner surface 22 of the barrel end 20 and terminates at the edge of the aperture opening 21 of the end 20. That is, the groove 111 penetrates the inner surface 11 of the side wall 10 and the inner surface 22 of the end portion 20. Preferably, the plurality of grooves 111 are equally spaced on the lens barrel. As shown in FIG. 1 , the lens barrel 100 provided in this embodiment has three grooves on the inner surfaces 11 and 22 of the side wall 10 and the end portion 20 . Of course, the number of the grooves is not limited to three. It can also be 1, 2, 4 or 4 or more.

The shape of the groove 111 is "L" shaped, and the inflection point is at the intersection of the inner surface 11 of the side wall 10 and the inner surface 22 of the end portion 20, as shown in Figs.

The groove edge shape of the groove 111 is linear. Of course, the shape of the groove edge of the groove 111 is not limited to such a shape, and may be a curved shape, a corrugated shape or the like.

Preferably, the width of the groove 111 should not be too large, and it may be set to be less than one tenth of the inner diameter of the optical element in the lens barrel 100, such as the lens.

As shown in FIG. 4, a lens module using the above lens barrel 100 is provided by the present invention. 200, comprising a lens barrel 100 and a lens 30, the lens 30 being received in the lens barrel 100.

The lens 30 is disposed at one end of the lens barrel 100, and the outer diameter of the lens 30 is equivalent to the inner diameter of the lens barrel 100. Thus, when the lens 30 is assembled into the lens barrel, the outer surface of the side surface is attached to the inner surface 11 of the side wall 10. Hehe.

Other optical elements such as spacer rings, filters, and other lenses may also be disposed on the lens 30.

The inner surface 11 of the side wall 10 of the lens barrel 100 and the inner surface 22 of the end portion 20 are provided with a plurality of grooves 111. The shape of the groove 111 is "L" shaped. Preferably, the plurality of grooves 111 are disposed in the lens barrel 100 at equal intervals.

When the lens module 200 is assembled, the lens 30 is first placed in the lens barrel 100, and the lens 30 is sucked into the end portion 20 of the lens barrel 100 by vacuum suction. The outer surface of the side wall of the lens 30 is fitted to the inner surface 11 of the side wall 10 of the lens barrel. Thus, due to the vacuum suction, the lens 30 will be deformed to some extent. However, due to the arrangement of the plurality of grooves 111, the inside of the lens barrel 100 does not have a completely closed space, so that the lens 30 is deformed by the suction force. Can be offset, can effectively solve the lens deformation problem.

In addition, after the lens 30 is sucked into the end portion 20, if the lens 30 is obliquely placed in the lens barrel 100, the inner surface 22 of the lens 30 and the end portion 20 cannot be flattened. The arrangement of the groove 111 can effectively adjust the suction force on the lower surface of the lens 30, so that the force of the lens 30 is relatively uniform, so that the lens 30 can be more smoothly fitted to the end portion 20 of the lens barrel.

The invention also provides a method for assembling a lens module, which comprises the following steps: Providing a lens barrel 100 and a lens 30 to be assembled as described above; placing the lens 30 in the lens barrel, and placing the nozzle of the vacuum suction device at the aperture hole 21 of the end portion 20 of the lens barrel, the lens 30 is aspirated to the end portion 20 and brought into close contact with the inner surface 22 of the barrel end portion 20; the lens 30 is fixed by using glue to the at least one groove 111 of the inner surface 11 of the side wall 10.

The assembling method of the lens module may further include: sequentially inserting optical elements such as a plurality of lenses, filters, and spacer rings into the lens barrel 100, and then using the glue to drop into the at least one groove 111, The lenses and other optical components are fixed at the same time.

Compared with the prior art, the lens barrel provided by the present invention, the lens module having the lens barrel, and the method for assembling the lens module have the following advantages: since the lens barrel is provided with a plurality of grooves, the lens is vacuum-sucked. When assembled into the lens barrel, it can offset the deformation of the lens caused by suction, ensure that the lens fits smoothly with the end of the lens barrel, improve the assembly yield of the lens module; and, when all the lenses are assembled, Dispensing at the groove allows the glue to flow along the groove to the end of the lens barrel, so that several lenses can be simultaneously fixed in the lens barrel to avoid relative movement of the lens in the lens barrel, thereby improving the reliability of the lens module. The image quality of the lens module is guaranteed.

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 a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

10‧‧‧ side wall

11,22‧‧‧ inner surface

12‧‧‧ outer surface

20‧‧‧End

111‧‧‧ trench

121‧‧‧External thread

100‧‧‧ lens barrel

Claims (10)

A lens barrel for accommodating an optical component, comprising: a side wall and an end portion at one end of the side wall and having a diaphragm hole, the side wall and the end portion each having an inner surface, wherein the lens barrel has at least a trench extending from an inner surface of the sidewall to an inner surface of the end and ending at an edge of the aperture of the end to communicate with the aperture. The lens barrel of claim 1, wherein the at least one groove is "L" shaped. The lens barrel of claim 1, wherein the groove edge shape of the at least one groove is linear or curved. The lens barrel of claim 1, wherein the at least one groove is a plurality of grooves, and the plurality of grooves are equally spaced on the lens barrel. A lens module includes a lens barrel and a lens, the lens is received in the lens barrel, the lens barrel includes a side wall and an end portion having an aperture hole at one end of the side wall, the side wall and the end portion have An inner surface is improved in that the lens barrel has at least one groove extending from an inner surface of the side wall to an inner surface of the end portion and ending at an edge of the aperture hole of the end portion to The aperture holes are connected. The lens module of claim 5, wherein the at least one groove is "L" shaped. The lens module of claim 5, wherein the width of the at least one groove is less than one tenth of an inner diameter of the lens. The lens module of claim 5, wherein the at least one groove is A plurality of grooves are equally spaced on the lens barrel. A method for assembling a lens module, comprising the steps of: providing a lens barrel and a lens to be assembled, the lens barrel comprising a side wall and an end portion having an aperture hole at one end of the side wall, the side wall and the end portion Each having an inner surface, the lens barrel having at least one groove extending from an inner surface of the side wall to an inner surface of the end portion and ending at an edge of the aperture hole of the end portion and the aperture hole Connecting the lens into the lens barrel, and placing the nozzle of the vacuum suction device at the aperture of the end of the lens barrel, sucking the lens to the end, and attaching the lens to the inner surface of the end Tightening; using glue to drip into at least one groove of the inner surface of the sidewall to secure the lens. The method for assembling a lens module according to claim 9, wherein the assembling method of the lens module comprises sequentially placing a plurality of optical elements into the lens barrel, and then using a glue drop to at least an inner surface of the side wall. A groove is used to simultaneously fix the plurality of optical elements.