TWM521182U - Correction structure for lens and lens assembly - Google Patents

Description

Lens lens group correction structure

The present invention relates to a device or device for photography, projection or viewing, and more particularly to a lens lens group correction structure that can finely adjust a lens group.

A conventional zoom lens as shown in FIG. 7 includes an inner ring 60, an outer ring 70, and a lens group 80. The inner wall of the inner ring 60 is provided with an inner ring guide hole 61 extending straight; the outer ring 70 is sleeved. The inner ring 60 is provided with an arc-shaped outer ring guide hole 71 on the peripheral wall; the lens group 80 includes a movable lens barrel 81, a guiding member 82 and a bolt 83, and the movable lens barrel 81 is accommodated inside the inner ring 60. The inside of the movable lens barrel 81 is provided with a lens. The guiding member 82 is axially disposed with a through hole 821 and is simultaneously inserted into the inner ring guiding hole 61 and the outer ring guiding hole 71. The bolt 83 passes through the guiding member 82 and is screwed. In the movable lens barrel 81, the guiding member 82 is coupled to the movable lens barrel 81; in this type of zoom lens, the guiding member 82 is rotated by the inner ring guiding hole 61 and the outer ring guiding hole 71 by using the bolt 83 as a spindle. When the user rotates the outer ring 70, the hole wall of the outer ring guide hole 71 pushes the guide member 82 to linearly move the guide member 82 along the inner ring guide hole 61, thereby moving the movable lens barrel 81 back and forth and adjusting the focal length. .

The lens group 80 of the existing zoom lens is fixed to the movable lens barrel 81 by means of a screw lock, and the lens groups 80 inside the existing zoom lens are caused by errors in lens manufacturing or errors in lens assembly. When the optical axes of the lens groups 80 are skewed and do not match, it is necessary to loosen the bolts 83, disassemble the lens groups 80 for adjustment, and sometimes even remove the lens to re-sharp the lens; in addition to the inability to fine-tune the maintenance In addition to the inconvenience, during the process of locking or loosening the bolt 83, the risk of slipping is likely to occur.

In order to solve the problem that the lens group of the existing zoom lens cannot be finely adjusted, the maintenance is inconvenient and the risk of slipping is likely to occur. The present invention provides a lens lens group correction structure, which is provided with an eccentric guide member in the lens group, and can be finely adjusted by rotating the eccentric guide member to push the movable lens barrel during maintenance.

The present invention solves the technical problem of the lens lens group correction structure, comprising: an inner ring having opposite ends and including a peripheral wall and three inner ring guide holes, and the inner ring guide holes are equiangularly distributed, Each inner ring guide hole extends through the peripheral wall of the inner ring and extends arcuately toward one end of the inner ring; an outer ring is sleeved on the inner ring, the outer ring has opposite ends and includes a peripheral wall and three outer ring guide holes, three outer ring guide holes are equiangularly disposed, each outer ring guide hole is disposed through the peripheral wall of the outer ring and extends straight toward both ends of the outer ring; and one or more lenses The lens assembly includes a movable lens barrel, an eccentric guide member, two guiding members and a bolt; the movable lens barrel is disposed inside the inner ring and includes three fixing holes having an equiangular annular distribution. Each of the fixing holes is radially recessed and the opening of each fixing hole faces the outside of the movable lens barrel; the eccentric guiding member includes a coupling portion and an abutting portion, the abutting portion having a diameter larger than a diameter of the coupling portion, Reach An eccentrically connected to the coupling section, the abutting section simultaneously inserts one of the inner ring guide holes and one of the outer ring guide holes, and the abutting section simultaneously contacts the hole wall of the inner ring guide hole a hole wall of the outer ring guide hole, the fixing portion is embedded in the fixing hole, the bolt is locked to the movable lens barrel through the eccentric guide; each guiding member includes an abutting portion, The two guiding members are respectively coupled to the other two fixing holes, one of the guiding members is disposed to the other of the inner ring guiding holes and the other of the outer ring guiding holes, and the guiding portion of the guiding member is simultaneously The wall of the hole contacting the inner ring guide hole and the hole wall of the outer ring guide hole, and the other guide member is simultaneously inserted into the remaining one of the inner ring guide hole and the remaining one of the outer ring guide holes, the guide The abutting section of the piece simultaneously contacts the wall of the inner ring guide hole and the wall of the outer ring guide hole.

The lens lens group correcting structure, wherein the eccentric guiding member comprises a through hole and a groove extending through the connecting portion of the eccentric guiding member and extending to the eccentric guiding member The abutting section is recessed in the abutting section and coaxially engages the through hole.

The improved performance of the technical means of the present invention is that the lens lens group correction structure of the present invention is adjusted by the eccentric guide member to push the movable lens barrel to make the optical axis of each lens group of the zoom lens barrel uniform, which can be shortened. Repair time and reduce the risk of bolt slippage.

In order to understand the technical features and practical functions of the present work in detail, and in accordance with the creative content, the following further describes the preferred embodiment as shown in the following figure:

As shown in FIG. 1 and FIG. 2, the preferred embodiment of the present invention comprises: an inner ring 10, an outer ring 20 and two lens sets 30; wherein the outer ring 20 is sleeved on the inner ring 10, The lens group 30 is housed inside the inner ring 10.

As shown in FIG. 1 and FIG. 2, the inner ring 10 has a cylindrical shape and has a first end and a second end. The inner ring 10 includes a peripheral wall and six inner ring guide holes 11 therein. The inner ring guide holes 11 are divided into two groups, each group includes three inner ring guide holes 11, and one of the three inner ring guide holes 11 is adjacent to the second end of the inner ring 10 and is equiangularly distributed. The inner ring guide hole 11 extends through the peripheral wall of the inner ring 10 and extends arcuately toward the first end of the inner ring 10, and another set of three inner ring guide holes 11 is located at the middle of the inner ring 10 and is also The ground extends arcuately toward the first end of the inner ring 10.

As shown in FIG. 1 and FIG. 2, the outer ring 20 has opposite ends and includes a peripheral wall and three outer ring guide holes 21; wherein, the outer ring guide holes 21 are equiangularly disposed, and the outer ring guide holes are respectively provided. 21 penetrates through the peripheral wall of the outer ring 20 and extends straight toward both ends of the outer ring 20.

As shown in FIG. 1 and FIG. 2, the lens groups 30 are disposed on the inner ring 10 and are respectively coupled to the two sets of the inner ring guide holes 11. Each lens group 30 includes a movable lens barrel 31 and an eccentric guide. The movable lens barrel 31 has an annular shape and includes three fixing holes 311 which are equiangularly distributed in an annular shape, and the fixing holes 311 are radially recessed and each of the fixing holes 311 The opening of the fixing hole 311 faces the outside of the movable lens barrel 31; as shown in FIG. 2, FIG. 3 and FIG. 4, the eccentric guiding member 32 includes a coupling section 321, an abutting section 322, a through hole 323 and a concave surface. The groove 324 has a short cylindrical shape and has opposite ends. The abutting portion 322 is also short cylindrical. The diameter of the abutting portion 322 is larger than the diameter of the joint portion 321 . The abutting portion 322 is eccentric. The grounding portion 323 is disposed at one end of the coupling portion 321 . The through hole 323 is axially disposed inside the coupling portion 321 and extends to the abutting portion 322 . The groove 324 is recessed in the abutting portion 322 and coaxially The perforation 323 is articulated in a preferred embodiment of the present invention. The recess 324 has a contour of a regular hexagon, the eccentric guide A fixing hole 311 is embedded in the coupling portion 321 of the 32. The abutting portion 322 of the eccentric guiding member 32 is simultaneously penetrated and contacts one of the inner ring guiding holes 11 and one of the outer ring guides. a hole 21, a bolt through the groove 324 and the through hole 323 is locked to the movable lens barrel 31;

As shown in FIG. 2, the other two bolts are respectively locked to the movable lens barrel 31 through the two guiding members 33, and the two guiding members 33 are respectively coupled to the other two fixing holes 311; The guiding member 33 includes an abutting portion, and one of the guiding members 33 is disposed through the other inner ring guiding hole 11 and the other outer ring guiding hole 21, and the abutting portion of the guiding member 33 simultaneously contacts the same The hole wall of the inner ring guide hole 11 and the hole wall of the outer ring guide hole 21; the other guide member 33 is simultaneously inserted into the remaining one of the inner ring guide hole 11 and the remaining one of the outer ring guide holes 21, The abutting portion of the guiding member 33 simultaneously contacts the hole wall of the inner ring guiding hole 11 and the hole wall of the outer ring guiding hole 21; as shown in FIG. 2 and FIG. 6, the lens 34 is disposed on the movable mirror. The interior of the cartridge 31; in the preferred embodiment of the present invention, the number of lens sets 30 is set to two, and in use, more than one lens set 30 can be mounted within the inner ring 10.

As shown in FIG. 5 and FIG. 6, when the lens groups 30 of the zoom lens are caused by lens manufacturing errors or lens assembly errors, the optical axes of the lens groups 30 are skewed and inconsistent, the maintenance personnel can insert a hex wrench. The eccentric guide 32 of the eccentric guide 32 rotates the eccentric guide 32. When rotating, the abutting portion 322 of the eccentric guide 32 is simultaneously subjected to one of the inner ring guide holes 11 and one of the outer portions. The ring guide hole 21 abuts, so that the coupling portion 321 of the eccentric guide 32 pushes the movable lens barrel 31 by pushing against one of the fixing holes 311 of the movable lens barrel 31, thereby finely adjusting each lens. The group 30 is such that the optical axes of the lens groups 30 of the zoom lens barrel are aligned.

The lens lens group correcting structure of the present invention is provided with an eccentric guide 32 in each lens group 30, which can rotate the eccentric guide of each lens group 30 when the optical axes of the lens groups 30 of the zoom lens are skewed or inconsistent. The lead 32 is used for fine adjustment; compared with the existing zoom lens, the creation shortens the time taken for maintenance, and also eliminates the need to frequently loosen or lock the bolt during maintenance, thereby greatly reducing the risk of slippage of the bolt. .

10‧‧‧ Inner Ring
11‧‧‧ Inner ring guide hole
20‧‧‧Outer Ring
21‧‧‧Outer ring guide hole
30‧‧‧ lens group
31‧‧‧Active tube
311‧‧‧Fixed holes
32‧‧‧Eccentric guides
321‧‧‧Combined section
322‧‧‧Attendance
323‧‧‧Perforation
324‧‧‧ Groove
33‧‧‧Guide
34‧‧‧ lenses
60‧‧‧ Inner Ring
61‧‧‧ Inner ring guide hole
70‧‧‧ outer ring
71‧‧‧Outer ring guide hole
80‧‧‧ lens group
81‧‧‧active tube
82‧‧‧Guide
821‧‧‧Perforation
83‧‧‧ bolt

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a preferred embodiment of the present invention. Figure 2 is an exploded view of the preferred embodiment of the present invention. Figure 3 is a top plan view of an eccentric guide of the preferred embodiment of the present invention. Figure 4 is a cross-sectional view of the eccentric guide of the preferred embodiment of the present invention. Figure 5 is a schematic view of the operation of the preferred embodiment of the present invention. Figure 6 is a schematic illustration of the operation of the cross-sectional view of the preferred embodiment of the present invention. Fig. 7 is a partial exploded view of a conventional zoom lens barrel.

10‧‧‧ Inner Ring

11‧‧‧ Inner ring guide hole

20‧‧‧Outer Ring

21‧‧‧Outer ring guide hole

30‧‧‧ lens group

31‧‧‧Active tube

311‧‧‧Fixed holes

32‧‧‧Eccentric guides

321‧‧‧Combined section

322‧‧‧Attendance

323‧‧‧Perforation

324‧‧‧ Groove

34‧‧‧ lenses

Claims (2)

A lens lens group correcting structure includes: an inner ring having opposite ends and including a peripheral wall and three inner ring guiding holes, wherein the inner ring guiding holes are equiangularly distributed, and each inner ring guiding hole is arranged Extending in an arcuate manner toward a peripheral wall of the inner ring and toward one end of the inner ring; an outer ring sleeved on the inner ring, the outer ring having opposite ends and including a peripheral wall and three outer ring guides a hole, three outer ring guide holes are equiangularly disposed, each outer ring guide hole extends through the peripheral wall of the outer ring and extends straight toward both ends of the outer ring; and one or more lens groups, each lens group includes a movable lens barrel, an eccentric guide member, two guiding members and a bolt; the movable lens barrel is disposed inside the inner ring and includes three fixing holes arranged at equal angles, and the fixing holes are radially recessed And the opening of each fixing hole faces the outside of the movable lens barrel; the eccentric guiding member comprises a coupling section and an abutting section, wherein the diameter of the abutting section is larger than the diameter of the coupling section, and the abutting section is eccentrically connected In the joint segment The inner ring guiding hole and the one of the outer ring guiding holes are simultaneously inserted into the abutting section, and the abutting section simultaneously contacts the hole wall of the inner ring guiding hole and the hole wall of the outer ring guiding hole, a fixing hole embedded in the coupling portion, the bolt is locked to the movable lens barrel through the eccentric guide; each guiding member includes an abutting section, and the guiding members are respectively coupled to the other Two of the fixing holes, one of the guiding members is disposed through the other inner ring guiding hole and the other outer ring guiding hole, and the abutting portion of the guiding member simultaneously contacts the hole wall of the inner ring guiding hole And the other side of the guide hole is inserted into the remaining one of the inner ring guide holes and the remaining one of the outer ring guide holes, and the abutting portion of the guide member simultaneously contacts the inner wall The hole wall of the ring guide hole and the hole wall of the outer ring guide hole. The lens lens group correcting structure of claim 1, wherein the eccentric guiding member comprises a through hole and a groove extending axially inside the joint portion of the eccentric guide and extending to the An abutting section of the eccentric guide, the groove is recessed in the abutting section and coaxially engages the through hole.