CN101387726B - Assembling fixture - Google Patents

Abstract

The invention relates to an assembly jig for assembling optical elements into a lens barrel. The assembly jig includes a handle and a push rod detachably connected to the handle. The handle is provided with an operating Assembling the operating part and a connecting part of the jig, the push rod is provided with a mounting part connected with the connecting part, and a pushing top for pushing the optical element, the width of the pushing top is less than or equal to The inner diameter of the lens barrel, the bottom end of the push top is provided with a receiving portion, and the push top is provided with at least one exhaust through hole, and the exhaust through hole communicates with the receiving portion. The assembling jig includes a handle and a push rod detachably connected to the handle. When assembling lenses of different sizes and specifications, only the push rod needs to be replaced instead of the handle, thereby improving the The utilization rate of the assembly jig is improved and the manufacturing cost of the assembly jig is reduced.

Description

Assembly fixture

technical field

The invention relates to an assembly fixture, in particular to a lens module assembly fixture.

Background technique

In recent years, with the development of multimedia technology, the scope of application of lens modules has become wider and wider, such as being applied to electronic products such as digital cameras, video cameras, and mobile phones with camera functions. While people are pursuing the miniaturization of digital cameras, video cameras and mobile phones with camera functions, they also put forward higher requirements for the image quality of the objects they shoot. It largely depends on whether the optical axes of the lenses in the lens module are aligned during the assembly process. In the paper "Zoom lens calibration for wind tunnel measurements" published by Alpheus et al. at the Fourth Conference of SPIE System and Image Metrology (Videometrics IV) in 1995, it was revealed that due to the misalignment of the optical axes of the lenses in the lens module, impact. Therefore, the assembly of the lens must be quite precise, so as to increase the probability of optical axis alignment, thereby improving the imaging quality of the lens module.

A lens module usually includes elements such as a barrel, a holder, a lens, a spacer ring, and a filter, wherein the lens is sequentially fixed in the barrel along the central axis of the barrel. During the lens module assembly process, the suction nozzle sucks the lens from the lens tray and puts it into the lens barrel, and then uses the jig to assemble the lens in the lens barrel.

In the prior art, pressing rods are usually used to assemble the position of the lens in the lens barrel. The pressing rod is a columnar structure with a groove at one end. However, the pressing rods are only assembled for lenses of one size specification. When assembling lenses of another size specification, it is necessary to replace the pressing rods corresponding to the specification of the lens to be assembled, so it is difficult to improve the utilization of the assembly jig The efficiency and save the material and processing cost of the assembly jig, and then it is difficult to reduce the manufacturing cost of the assembly jig.

Contents of the invention

In view of this, it is necessary to provide an assembly jig that can improve the utilization rate and reduce the manufacturing cost.

An assembly jig for assembling optical elements into a lens barrel, wherein the assembly jig includes a handle and a push rod detachably connected to the handle, and the handle is provided with a handle to operate the assembly The operating part of the jig and a connecting part, the push rod is provided with a mounting part connected with the connecting part, and a pushing top for pushing the optical element, the width of the pushing top is less than or equal to the The inner diameter of the lens barrel, the bottom end of the push top is provided with an accommodating part, the optical element is provided with an optical part for light-transmitting imaging, the accommodating part is used to accommodate the optical part, and the push The top is provided with at least one exhaust through hole, and the exhaust through hole communicates with the accommodating portion, and the outlet of the exhaust through hole is arranged on the outer wall of the pushing top so that the air in the accommodating portion Gas is exhausted to the outside of the push top.

Compared with the prior art, the assembly jig includes a handle and a push rod detachably connected to the handle, when assembling lenses of different sizes and specifications, only the push rod needs to be replaced instead of the The handle, thereby improving the utilization rate of the assembly jig and reducing the manufacturing cost of the assembly jig.

Description of drawings

Fig. 1 is a cross-sectional view of an assembly jig provided by an embodiment of the present invention.

FIG. 2 is a cross-sectional view of an assembly jig provided by an embodiment of the present invention when a lens is assembled into a correct position in a lens barrel.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings.

Please refer to Fig. 1, a kind of assembly jig 10 that provides for the embodiment of the present invention, is used for assembling the lens 11 in the lens barrel 13 (as shown in Fig. 2 ), it comprises: a handle 12, and a detachable Connected to the push rod 14 of the handle 12.

The handle 12 is provided with an operating portion 122 for operating the assembly jig 10 and a connecting portion 124 , and an outer wall 1242 of the connecting portion 124 is provided with an external thread 1244 .

Preferably, the operating portion 122 of the handle 12 is provided with a plurality of grooves 1222 for gripping. During the assembly process, in order to achieve the best effect of installing the lens 11 into the lens barrel 13 , the operator holds the groove 1222 to keep the assembly jig 10 stable and vertically downward.

The push rod 14 is provided with a mounting portion 142 connected with the connecting portion 124, and the mounting portion 142 is provided with a threaded hole 1422, and the internal thread of the threaded hole 1422 is matched with the external thread of the connecting portion 124, so as to Realize the connection between the push rod 14 and the handle 12 . It can be understood that the connection between the mounting portion 142 of the push rod 14 and the connecting portion 122 of the handle 12 may also be: the connecting portion 124 is provided with a threaded hole, and the outer wall of the mounting portion 142 is provided with an outer wall. thread. In addition, the connection between the mounting portion 142 of the push rod 14 and the connecting portion 122 of the handle 12 may also be connected in other ways, such as snap-fit connection and the like.

The push rod 14 is provided with a push top 144 for pushing the lens 11, the width of the push top 144 is less than or equal to the inner diameter of the lens barrel 13, and the bottom end of the push top 144 is provided with a push top. Face 1446. The lens 11 is usually a plastic lens, which includes an optical part 114 at the center and a supporting part 112 surrounding the optical part 114, and the supporting part 112 is against the boss at the bottom of the lens barrel 13 to carry The lens 11. During the assembly process, the operator holds the groove 1222 of the handle 12 and presses down, so that the pushing top 144 enters the lens barrel 13, and the pushing surface 1446 pushes the supporting part of the lens 11 112, so that the lens 11 is in the correct position in the lens barrel 13. The size specification of the push top 144 changes according to the change of the size specification of the lens 11 . It can be understood that when the size specification of the lens 11 increases, the size specification of the push top 144 increases accordingly; when the size specification of the lens 11 decreases, the size specification of the push top 144 also increases accordingly. decrease.

Preferably, the bottom end of the push top 144 is provided with a receiving portion 1442 . The accommodating portion 1442 is used for accommodating the optical portion 114 , so as to prevent the pushing top portion 144 of the push rod 14 from contacting the optical portion 114 during assembly, thereby avoiding affecting the optical performance of the lens 11 .

Please refer to FIG. 2 , the assembly tool 10 can be further improved: for example, at least one exhaust through hole 1444 is opened on the push top 144 of the push rod 14, and the outlet 1445 of the exhaust through hole 1444 is located on the Push the outer wall 1448 of the top 144. When the width of the push top 144 is smaller than the inner diameter of the lens barrel 13, a gap 131 is formed between the push top 144 and the lens barrel 13, and the exhaust through hole 1444 and the accommodating portion 1442 communicate with the gap 131 to remove the gas in the accommodating portion 1442 to the outside of the push top 144, when the lens 11 is assembled to the correct position in the lens barrel 13, the The upper and lower surfaces of the lens 11 are subjected to the same gas pressure, thereby ensuring the accuracy of the position of the lens 11 in the lens barrel and the imaging quality of the lens module. In addition, the exhaust through hole can also be extended from the accommodating part 1442 to the upper part of the push top 144, the exhaust through hole 1444 is connected to the outside of the accommodating part 1442 and the lens barrel 13 The space is connected, and when the width of the push top 144 is equal to the inner diameter of the lens barrel 13 , the exhaust through hole can also exhaust the gas in the accommodating portion 1442 to the outside of the push top 144 .

In this embodiment, the handle 12 and the push rod 14 are made of plastic steel.

The assembly jig 10 includes a handle 12 and a push rod 14 detachably connected to the handle 12. When assembling lenses of different sizes and specifications, only the push rod 14 needs to be replaced instead of the push rod 14. handle 12, so as to improve the utilization rate of the assembly jig 10 and reduce the manufacturing cost of the assembly jig 10. In addition, the assembly jig 10 also has the advantages of easy installation, high assembly efficiency and high assembly accuracy.

In addition, those skilled in the art can also make other changes within the spirit of the present invention. Of course, these changes made according to the spirit of the present invention should be included within the scope of protection claimed by the present invention.

Claims (5)

1. assembled fixture, be used for optical element is assembled in the lens barrel, it is characterized in that: described assembled fixture comprises a handle and a push rod that removably is connected in described handle, described handle is provided with operating portion and a junction of the described assembled fixture of an operation, described push rod is provided with an installation portion that is connected with described connecting portion, an and ejection part that is used for the described optical element of ejection, the width of described ejection part is less than or equal to the internal diameter of described lens barrel, the bottom of described ejection part is provided with a holding part, described optical element is provided with an optic that is used for the printing opacity imaging, described holding part is used to accommodate described optic, described ejection part is provided with at least one exhaust hole, described exhaust hole is connected with described holding part, and the outlet of described exhaust hole is located at the outer wall of described ejection part the air scavenge in the described holding part is arrived the outside of described ejection part.

2. assembled fixture as claimed in claim 1 is characterized in that the bottom of described ejection part is provided with an ejection face, and described optical element is provided with a bearing and leaning portion that is used for breasting, and described ejection face is used for the described bearing and leaning portion of ejection.

3. assembled fixture as claimed in claim 1 is characterized in that, the operating portion of described handle is provided with a plurality of grooves that are used to grip.

4. assembled fixture as claimed in claim 1 is characterized in that, the connected mode between the installation portion of described push rod and the connecting portion of described handle is for being threaded or buckle is connected.

5. assembled fixture as claimed in claim 1 is characterized in that, the material of described handle and push rod is the plastic-steel material.

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