TWM522362U - Improved structure of lens transfer inclination - Google Patents

Description

Structure for improving lens tilt and tilt

The present invention relates to a device or device for photographing, screening or viewing, and more particularly to a structure for improving the tilting of the lens when the lens is zoomed to suppress the optical axis of the lens.

As shown in FIG. 8 and FIG. 9 , a conventional zoom lens includes an end cover 60 , an outer lens barrel 70 , an inner lens barrel 80 , and a compression spring 90 . The inner surface of the end cover 60 is provided with a lens 61 . 70 has opposite front and rear ends, the front end of the outer barrel 70 is screwed to the end cover 60, and the inside of the outer barrel 70 is provided with two guiding rods 71 extending toward the front end of the outer barrel 70; the inner barrel 80 is mounted The inner lens barrel 80 is disposed inside the outer lens barrel 70, and the inner lens barrel 80 is provided with a lens 81. The outer side of the inner lens barrel 80 is provided with two guiding portions, and the two guiding portions are oppositely disposed. There is a perforation 82, and the other guiding portion is recessed with a recess 83. The through hole 82 and the recess 83 of the inner barrel 80 are respectively sleeved on the two guiding rods 71 of the outer barrel 70, so that the inner barrel 80 can be along Two guide rods 71 are slid inside the outer barrel 70; the compression spring 90 is received inside the outer barrel 70 and has opposite ends, one end of the compression spring 90 abuts against the end cover 60, and the compression spring 90 One end abuts against the inner lens barrel 80; when the user rotates the outer lens barrel 70, the outer lens barrel 70 can be moved away from the end cover 60, and the inner lens barrel 80 is pushed against the compression spring 90 along the two guides. 71 is retreated; whereby the distance of the lens barrel 61 and the inner cap 60 to change the lens 81 of 80, so as to achieve a zoom effect.

In this type of zoom lens, the aperture of the through hole 82 of the inner barrel 80 needs to be larger than the diameter of the guide rod 71 to allow the inner barrel 80 to smoothly slide inside the outer barrel 70; however, since the aperture of the through hole 82 is larger than the guide The diameter of the rod 71, therefore, when the outer barrel 70 is rotated, the inner barrel 80 is displaced with the rotation of the outer barrel 70, so that the optical axis of the lens 61 and the lens 81 cannot be aligned, resulting in misalignment and The problem of blurred images.

In order to solve the problem that the inner lens barrel of the existing zoom lens shifts with the rotation of the outer lens barrel, the problem of inaccurate focus and image blurring is caused. The present invention provides a structure for improving the tilting of the lens. The first guiding structure of the inner barrel is provided with an elastic positioning member abutting against the first guiding member of the outer barrel, and the elastic positioning member is used first. The guide member fixes the inner lens barrel so that the inner lens barrel does not shift as the outer lens barrel rotates.

The present invention solves the technical problem of improving the tilting of the lens, comprising: an outer barrel comprising a barrel body and a first guiding member, the barrel body having a length direction, the first a guiding member is disposed inside the barrel body and extending along a length of the barrel body; and at least one lens group, the at least one lens group is disposed inside the barrel body, and the at least one lens group includes An inner lens barrel and an elastic positioning member, the inner lens barrel includes a first guiding structure slidably coupled to the first guiding member, the elastic positioning member is coupled to the inner lens barrel and abuts In the first guiding member.

The structure for improving the tilting of the lens, wherein the first guiding member has a rod shape; the inner barrel includes an inner barrel body, and the first guiding structure comprises two protrusions, and the two The protrusions are spaced apart from the outer peripheral surface of the inner tube body, and each of the protrusions is provided with a through hole. Two through holes of the two protrusions are disposed on the first guiding member, and the elastic positioning member is coupled to the two convex portions. Block and abut against the first guide.

The structure for improving the tilting of the lens, wherein the two protruding directions of the two protrusions are at an angle.

The structure for improving the tilting of the lens, wherein each of the bumps comprises a locating hole, the two axial centers of the two through holes are located on an axis, and the two axial centers of the two locating holes are respectively located at the axis On both sides, the elastic positioning member is coupled to the two locating holes.

The structure for improving the tilting of the lens, wherein the elastic positioning member is curved and includes an abutting section and two inserting sections, the abutting section having opposite ends, and the inserting sections are perpendicular The grounding portion is disposed at two ends of the abutting portion and respectively facing in opposite directions, and the two insertion portions are respectively inserted into the two positioning member holes of the two protrusions, and the abutting portion is pushed against the first guiding portion Leading.

The structure for improving the tilting of the lens, wherein the elastic positioning member is made of metal.

The structure for improving the tilting of the lens, wherein the outer barrel is provided with a second guiding member in the shape of a rod, and the second guiding member extends along the length of the barrel body. The lens assembly includes a second guiding structure, and the second guiding structure is provided with a guiding slot, and the guiding groove of the second guiding structure is engaged with the second guiding member.

The structure for improving the tilting of the lens, wherein the barrel body has a diameter direction, and the first guiding member and the second guiding member are respectively adjacent to the diameter direction of the barrel body. The inner tube body has a diameter direction, and the first guiding structure and the second guiding structure are respectively disposed at two ends of the inner tube body in the diameter direction.

The improvement in the efficiency of the technical means of the present invention is that the improved lens shifting tilting structure of the present invention is provided with an elastic positioning member to abut against the first guiding member of the outer barrel and simultaneously push the first guiding structure of the inner barrel. The two protrusions make the two perforations of the two protrusions abut against the first guiding member, so that the inner lens barrel does not shift when the outer lens barrel rotates; compared with the existing zoom lens, the focus of the creation is accurate. And can provide clear images.

10‧‧‧External tube

11‧‧‧Mirror body

111‧‧‧ convex

1111‧‧‧Fixed holes

12‧‧‧First guide

13‧‧‧Second guide

20‧‧‧End cover

21‧‧‧ cover

211‧‧‧ screw lock

22‧‧‧ lens

30‧‧‧ lens group

31‧‧‧Endoscope tube

311‧‧‧Endoscope barrel body

312‧‧‧First guiding structure

3121‧‧‧Bumps

31211‧‧‧Perforation

31212‧‧‧Positioning hole

313‧‧‧Second guiding structure

3131‧‧

32‧‧‧ lenses

33‧‧‧Flexible positioning parts

331‧‧‧Attendance

332‧‧‧Intervene

40‧‧‧Flexible parts

60‧‧‧End cover

61‧‧‧ lenses

70‧‧‧External tube

71‧‧‧Guide bars

80‧‧‧Endoscope tube

81‧‧‧ lenses

82‧‧‧Perforation

83‧‧‧ Groove

90‧‧‧Compressed spring

Θ‧‧‧ angle

X‧‧‧ axis

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective cross-sectional 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 perspective view of the inner lens barrel of the preferred embodiment of the present invention.

Figure 4 is a front elevational view of the inner lens barrel of the preferred embodiment of the present invention.

Figure 5 is an axial cross-sectional view of the preferred embodiment of the present invention.

Figure 6 is a cross-sectional view of the preferred embodiment of the present invention taken along line A-A of Figure 5;

Figure 7 is a partial enlarged view of a cross section of the preferred embodiment of the present invention.

Fig. 8 is a cross-sectional view showing the axial direction of a conventional zoom lens.

Fig. 9 is a cross-sectional view showing a radial direction of a conventional zoom lens.

In order to understand in detail the technical features and practical functions of the present creation, and can be realized according to the creation content, further detailed embodiments as shown in the figure are as follows: as shown in FIG. 1, FIG. 2 and FIG. The first preferred embodiment of the present invention comprises: an outer lens barrel 10, an end cap 20, a lens group 30 and an elastic member 40; wherein the end cap 20 is coupled to the outer lens barrel 10, the lens The group 30 and the elastic member 40 are housed inside the outer lens barrel 10.

As shown in FIG. 1 , FIG. 2 and FIG. 5 , the outer barrel 10 includes a barrel body 11 , a first guiding member 12 and a second guiding member 13 . The barrel body 11 has a length. The lens barrel body 11 has opposite ends in the longitudinal direction, and the barrel body 11 includes a convex portion 111 adjacent to one end of the barrel body 11 and annularly protruded. The convex portion 111 is provided with two fixing holes 1111, and the fixing holes 1111 penetrate the convex portion 111 along the longitudinal direction of the lens barrel body 11. The two fixing holes 1111 respectively The first guiding member 12 and the second guiding member 13 are disposed inside the barrel body 11 and adjacent to the diameter direction of the barrel body 11 respectively. The first guiding member 12 and the second guiding member 13 extend along the length direction of the barrel body 11 at the opposite ends. In the preferred embodiment of the present invention, the first guiding member 12 The second guiding member 13 is rod-shaped, and the first guiding member 12 and the second guiding member 13 are respectively inserted into the fixing holes 1111.

As shown in FIG. 2 and FIG. 5, the end cap 20 is screwed to the other end of the barrel body 11 and away from the convex portion 111. The end cover 20 includes a cover body 21 and a lens 22; wherein the cover body An annular locking portion 211 is provided. The outer peripheral surface of the screw locking portion 211 is provided with a thread for screwing. The lens 22 is mounted inside the lid body 21.

As shown in FIG. 2, FIG. 3 and FIG. 5, the lens group 30 is disposed inside the lens barrel body 11 so as to be movable back and forth along the longitudinal direction of the lens barrel body 11. The lens group 30 includes an inner lens barrel. 31. A lens 32 and an elastic positioning member 33. The inner lens barrel 31 includes an inner barrel body 311, a first guiding structure 312 and a second guiding structure 313. The inner barrel body 311 has a length. In the direction and the diametrical direction, the inner tube body 311 has a first end and a second end in the longitudinal direction, and the first guiding structure 312 and the second guiding structure 313 are respectively disposed on the inner tube Both ends of the main body 311 in the diametrical direction are slidably coupled to the first guiding member 12 and the second guiding member 13 of the outer barrel 10, and the first guiding structure 312 includes two protrusions 3121 spaced apart from each other. As shown in FIG. 3 and FIG. 4, the two protrusions 3121 are protruded from the outer peripheral surface of the inner barrel body 311, and one of the protrusions 3121 is adjacent to the first end of the inner barrel body 311. The protrusion 3121 is located at the second end of the inner barrel body 311, and the convex directions of the two protrusions 3121 are at an angle of 0, and each convex The 3121 includes a through hole 31211 and a locating hole 31112. The through hole 31211 of each of the protrusions 3121 is disposed in the inner side of each of the protrusions 3121 along the longitudinal direction of the inner tube body 311. The axes of the two holes 31211 are located. On the same axis X, the positioning hole 31312 of each of the protrusions 3121 is disposed in the inner side of each of the protrusions 3121 along the longitudinal direction of the inner tube body 311. The two axes of the positioning member holes 31212 are respectively located. On the opposite sides of the axis X, the second guiding structure 313 is provided with a guiding groove 3131. The second guiding structure 313 is a two protruding rib protruding from the outer circumferential surface of the inner barrel body 311, and the guiding groove 3132 is formed. Between the two ribs, the two through holes 31211 of the two protrusions 3121 of the first guiding structure 312 are sleeved on the first guiding member 12 of the outer lens barrel 10, and the guiding groove 3132 of the second guiding structure 313 is stuck. The second guiding member 13 of the outer lens barrel 10 is configured to move the lens group 30 back and forth along the longitudinal direction of the barrel body 11.

As shown in FIG. 1 , FIG. 2 and FIG. 3 , the lens 32 is disposed inside the inner lens barrel 31. In the preferred embodiment of the present invention, the number of the lens 32 is set to one, and the application may be One or more lenses 32 are disposed inside the inner lens barrel 31; as shown in FIG. 2, FIG. 5 and FIG. 6, the elastic positioning member 33 is coupled to the first guiding structure 312 and abuts the outer lens barrel 10 The first guiding member 12 is made of a metal material and has a curved shape. The elastic positioning member 33 includes an abutting portion 331 and two insertion portions 332. The abutting portion 331 has opposite ends. The two insertion portions 332 are vertically connected to the two ends of the abutting portion 331 and are respectively facing in opposite directions, and the two insertion portions 332 are respectively inserted into the two positioning member holes 31212 of the two protrusions 3121; In the preferred embodiment of the present invention, the number of the lens sets 30 is set to one, and more than one lens group 30 can be disposed inside the lens barrel body 11 for application.

As shown in FIG. 1 , FIG. 2 and FIG. 5 , the elastic member 40 has two opposite ends and is located between the end cover 20 and the inner lens barrel 31 . One end of the elastic member 40 abuts against the end cover 20 . The other end of the elastic member 40 abuts against the inner lens barrel 31. In the preferred embodiment of the present invention, the elastic member 40 is a compression spring.

When the user rotates the outer barrel 10 to zoom, the outer barrel 10 is away from the end cover 20 along the screw portion 21 of the end cover 20, and the lens group 30 is pushed by the elastic member 40 along the The lens barrel body 11 is retracted in the longitudinal direction; as shown in FIG. 5, FIG. 6 and FIG. 7, the abutting portion 331 of the elastic positioning member 33 abuts against the first guiding member 12 of the outer barrel 10, The two insertion sections 332 of the elastic positioning member 33 are pushed against the two projections 3121 of the first guiding structure 312 of the inner lens barrel 31, so that the inner lens barrel 31 is offset in the opposite direction, and the two perforations of the two protrusions 3121. 31211 is abutted against the first guiding member 12, so that the inner lens barrel 31 can be rotated without the outer lens barrel 10; the structure of the present invention for improving the lens shifting inclination is in the inner lens barrel 31 along with the When the outer barrel 10 is rotated, the occurrence of the shift of the inner barrel 31 can be avoided, so that there is no problem that the focus and the image are not blurred.

10‧‧‧External tube

11‧‧‧Mirror body

111‧‧‧ convex

1111‧‧‧Fixed holes

12‧‧‧First guide

13‧‧‧Second guide

20‧‧‧End cover

21‧‧‧ cover

211‧‧‧ screw lock

22‧‧‧ lens

30‧‧‧ lens group

31‧‧‧Endoscope tube

311‧‧‧Endoscope barrel body

312‧‧‧First guiding structure

3121‧‧‧Bumps

313‧‧‧Second guiding structure

32‧‧‧ lenses

33‧‧‧Flexible positioning parts

331‧‧‧Attendance

332‧‧‧Intervene

40‧‧‧Flexible parts

Claims (8)

A structure for improving tilting of a lens, comprising: an outer barrel comprising a barrel body and a first guiding member, the barrel body having a length direction, the first guiding member being disposed on the mirror An inner portion of the barrel body and extending along a length of the barrel body; and at least one lens group disposed inside the lens barrel body, the at least one lens group including an inner lens barrel and an elastic positioning The inner lens barrel includes a first guiding structure slidably coupled to the first guiding member, the elastic positioning member is coupled to the inner lens barrel and abuts the first guiding member . The structure for improving lens shift tilt according to claim 1, wherein the first guiding member has a rod shape; the inner lens barrel includes an inner barrel body, and the first guiding structure includes two convex portions. a block, two of the protrusions are spaced apart from the outer peripheral surface of the inner barrel body, each of the protrusions is provided with a perforation, and two perforated sleeves of the two protrusions are disposed on the first guiding member, and the elastic positioning member is combined And the two protrusions abut against the first guiding member. The structure for improving the tilting of the lens according to claim 2, wherein the two protruding directions of the two bumps are at an angle. The structure for improving the tilting of the lens according to claim 3, wherein each of the bumps comprises a locating hole, the two axial centers of the two through holes are located on an axis, and the two axial centers of the two locating holes are respectively located The elastic positioning members are coupled to the two positioning holes of the opposite sides of the axis. The structure for improving the tilting of the lens according to claim 4, wherein the elastic positioning member is curved and includes an abutting section and two insertion sections, the abutting section having opposite ends, and the two The insertion section is vertically connected to the two ends of the abutting section and respectively facing in opposite directions, and the two insertion sections are respectively inserted into the two positioning pieces of the two protrusions, and the abutting section is pushed against the The first guide member is described. The structure for improving the tilting of the lens according to claim 5, wherein the elastic positioning member is made of a metal material. The structure for improving the tilting of the lens according to claim 6, wherein the outer barrel is provided with a second guiding member in the shape of a rod, the second guiding member is along the length of the barrel body The lens assembly includes a second guiding structure, and the second guiding structure is provided with a guiding slot, and the guiding groove of the second guiding structure is engaged with the second guiding member. The structure for improving the tilting of the lens according to claim 7, wherein the barrel body has a diameter direction, and the first guiding member and the second guiding member are respectively adjacent to the diameter of the barrel body. The opposite ends of the direction; the inner barrel body has a diameter direction, and the first guiding structure and the second guiding structure are respectively disposed at two ends of the inner diameter of the inner barrel body.