TWI409515B - Position device for assembling lens - Google Patents

Abstract

The present invention relates to a position device for assembling lens. The position device for assembling lens is used for positioning the lens before the lens received in the lens holder. The lens holder includes a hole, a first plane and a second plane. The hole extends from the first plane to the second plane. Some slices are protruding from an inner surface of the hole. The position device for assembling lens further includes a hold desk and a lens loader. The hold desk includes a hold plane parallel to the first plane. The axial length of the lens loader is longer than that of the hole. The diameter of the lens loader is smaller than that of the hole. One end of the lens loader is fixed to the hold plane. An end surface of the other end of the lens loader is parallel to the hold plane. The lens loader is used for paralleling the lens to the hold plane before the lens assembled into the hole.

Description

Positioning fixture for lens assembly

The invention relates to a positioning fixture for lens assembly.

Due to the miniaturization of electronic imaging equipment, the zoom mechanism of the lens is getting smaller and smaller, and the parts are getting finer and finer. In particular, the use of Micro-Electro-Mechanical Systems (MEMS) has greatly reduced the size of parts. However, as the part size decreases, its strength also decreases, thereby increasing assembly complexity.

Referring to FIGS. 1 and 2 , the lens 9 is mounted in a lens holder 1 of a microelectromechanical system having an optical portion 90 and a non-optical portion 91 , and the optical portion 90 is located in the middle of the non-optical portion 91 . The lens holder 1 has a receiving hole 10 and two first planes 1A and 1B parallel to each other. The receiving hole 10 extends through the first plane 1A and the second plane 1B. The inner wall 1C of the accommodating hole 10 is provided with a plurality of elastic pieces 11 protruding in the inner diameter direction, and the elastic piece 11 is extremely thin and can only carry 5 mg of weight. When the lens is assembled, it is required to dispense the film on the elastic piece 11, and then the lens 9 is placed on the elastic piece 11 by a clip (not shown), and the non-optical portion 91 of the lens 9 is adhered to the elastic piece 11, Thereby, the lens 9 is mounted on the lens holder 1.

However, since the elastic piece itself is very fragile, sometimes the lens may be tilted when the lens is placed, causing unevenness of the elastic pieces, thereby causing the elastic piece to break.

In view of the above, it is necessary to provide a positioning jig for assembling a lens at the time of assembly.

A positioning fixture for lens assembly for positioning a lens before the lens is assembled to a lens holding body, the lens holder having a receiving hole and two first planes and a second plane parallel to each other, The accommodating hole is disposed in the first plane and the second plane, and the inner wall of the accommodating hole is provided with a plurality of elastic pieces protruding toward the inner diameter direction, and the positioning fixture for the lens assembly comprises a carrying platform and a load a carrier having a bearing plane parallel to the first plane, the axial length of the carrier is greater than the axial length of the receiving hole, and the radial dimension of the carrier is smaller than the receiving aperture To the size, one end of the carrier is fixed on the bearing plane, and the other end of the plane is parallel to the bearing plane, and the lens is loaded before the lens is inserted into the receiving hole, so that the lens is parallel to the bearing. flat.

The lens assembly positioning fixture can adjust the lens parallel to the plane of the elastic piece before the lens is fixed on the elastic piece, and then fix the lens on the elastic piece, thereby avoiding the tilting of the lens and causing the elastic force of the elastic piece to be uneven. The break happened.

1‧‧‧Lens holder

1A‧‧‧ first plane

1B‧‧‧ second plane

1C‧‧‧ inner wall

10‧‧‧ accommodating holes

11‧‧‧Shrap

100‧‧‧Locating fixture for lens assembly

20‧‧‧Loading station

21‧‧‧bearing plane

30‧‧‧With frame

31‧‧‧Support column

31a, 31b‧‧‧ one end of the support column

40‧‧‧Boss

41‧‧‧End of the boss

42‧‧‧ top surface

9‧‧‧ lenses

90‧‧‧Optical Department

91‧‧‧Non-optics

1 is a perspective view of a lens holder and a lens; FIG. 2 is a plan view of the lens holder; FIG. 3 is a perspective view of a lens assembly positioning jig, a lens and a lens holder according to a first embodiment of the present invention; The positioning fixture for lens assembly provided by the first embodiment of the invention is mounted on the lens FIG. 5 is a perspective view of a positioning fixture for a lens assembly, a lens, and a lens holder according to a second embodiment of the present invention; FIG. 6 is a positioning fixture for assembling a lens according to a second embodiment of the present invention; The lens maintains a perspective view of the body.

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

Referring to FIG. 3 and FIG. 4, a first embodiment of the present invention provides a positioning fixture 100 for lens assembly. The lens assembly positioning jig 100 includes a carrier 20 and a carrier frame 30.

The carrier 20 is a circular disk. It will be appreciated that the shape of the carrier can be rectangular or other geometric shape. The carrier 20 has a carrier plane 21. The bearing plane 21 is parallel to the first plane 1A of the lens holder 1.

In this embodiment, the carrier frame 30 is composed of a plurality of contour support columns 31 arranged at equal intervals, and each of the support columns 31 has a rectangular or arch shape. In the present embodiment, a rectangle is employed. The lens 9 and the lens holder 1 used in the present embodiment are the same as those in Figs. 1 and 2 . The axial length H1 of the carrier frame 30 is greater than the axial length H2 of the receiving hole 10 of the lens holder 1, and the radial dimension N of the carrier frame 30 is smaller than the radial dimension L of the receiving hole 10, One end 31a of the support post 31 is fixed on the bearing plane 21, and the plane of the other end 31b is parallel to the carrying plane 21, and the lens 9 is loaded into the receiving hole 10 to carry the lens 9 so that the lens 9 is parallel. On the carrying plane 21 . Preferably, the outer diameter N of the circle where the support post 31 is located and the accommodating The inner diameter L of the hole 10 is equivalent to ensure accurate positioning.

The lens assembly positioning jig 100 is formed with a plurality of contour bosses 40 disposed around the carrier frame 30. The boss 40 ensures a gap between the bearing plane 21 and the lens holder 1 to facilitate separation of the lens holder 1 from the carrier plane 21. It can be understood that the shape of the boss 40 may be a shape such as a rectangular parallelepiped or a cylinder. In this embodiment, the plurality of bosses 40 are cylindrical bodies, and the number is four. One end 41 of the boss 40 is connected to the bearing plane 21, and the connection manner may be welding or other fixing manner. In the present embodiment, welding is employed. The top surface 42 of the boss 40 is parallel to the bearing plane 21.

In the embodiment, the lens holder 1 is a rectangular block. When the lens 9 is to be mounted in the lens holder 1, the lens assembly positioning jig 100 is first inserted into the lens holder 1. At this time, the support post 31 of the lens assembly positioning jig 100 is pierced from the space between the respective elastic pieces 11 of the inner wall 1C of the lens holder 1. The first plane 1A of the lens holder 1 bears against the top surface 42 of the boss 40. Then, dispensing is performed on the elastic piece 11, and the lens 9 is placed flat on one end 31b of the support post 31, keeping the lens 9 parallel to the bearing plane 21. Finally, the lens assembly positioning jig 100 is withdrawn from the lens holder 1, or the lens holder 1 is vertically lifted. In the present embodiment, the lens holder 1 is vertically raised. During the separation of the lens assembly positioning jig 100 from the lens holder 1, the elastic piece 11 replaces the position of the support post 31, so that the lens 9 is bonded to the elastic piece 11 to complete the mounting of the lens 9.

Referring to FIG. 5 and FIG. 6 , a second embodiment of the present invention provides a positioning fixture 200 for lens assembly. It is basically the same as the positioning jig 100 for lens assembly provided by the first embodiment. The difference is that the carrier frame 30 is a cylinder. Outside the carrier frame 30 The diameter M is smaller than the aperture L1 surrounded by the elastic piece 11. When the lens assembly positioning jig 200 is inserted into the lens holder 1, the carrier frame 30 of the lens assembly positioning jig 200 is pierced from the hole surrounded by the elastic piece 11.

The lens assembly positioning fixture can adjust the lens parallel to the plane of the elastic piece before the lens is fixed on the elastic piece, and then fix the lens on the elastic piece, thereby avoiding the tilting of the lens and causing the elastic force of the elastic piece to be uneven. The break happened.

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.

1‧‧‧Lens holder

1A‧‧‧ first plane

1B‧‧‧ second plane

1C‧‧‧ inner wall

10‧‧‧ accommodating holes

11‧‧‧Shrap

100‧‧‧Locating fixture for lens assembly

20‧‧‧Loading station

21‧‧‧bearing plane

31‧‧‧Support column

31a, 31b‧‧‧ one end of the support column

40‧‧‧Boss

41‧‧‧End of the boss

42‧‧‧ top surface

9‧‧‧ lenses

90‧‧‧Optical Department

91‧‧‧Non-optics

Claims (7)

A positioning fixture for lens assembly for positioning a lens before the lens is assembled to a lens holding body, the lens holder having a receiving hole and two first planes and a second plane parallel to each other, The accommodating hole is disposed in the first plane and the second plane, and the inner wall of the accommodating hole is provided with a plurality of elastic pieces protruding toward the inner diameter direction, and the positioning fixture for the lens assembly comprises a carrying platform and a load a carrier having a bearing plane parallel to the first plane, the axial length of the carrier is greater than the axial length of the receiving hole, and the radial dimension of the carrier is smaller than the receiving aperture To the size, one end of the carrier is fixed on the carrying plane, and the other end of the frame is parallel to the carrying plane, and the lens is loaded into the receiving hole before the lens is loaded, so that the lens is parallel to the Carrying plane. The positioning jig for lens assembly according to claim 1, wherein the carrier is a disk. The positioning fixture for lens assembly according to claim 1, wherein the bearing plane of the carrying platform is formed with a plurality of contoured bosses. The positioning jig for lens assembly according to claim 3, wherein the boss is disposed around the carrier. The positioning jig for lens assembly according to claim 1, wherein the carrier frame is a cylinder. The positioning fixture for lens assembly according to claim 1, wherein the carrier frame is composed of a plurality of support columns of equal height arranged vertically at equal intervals. The positioning fixture for lens assembly according to claim 6, wherein the The cross-sectional shape of each support column is rectangular or arched.