JP6351769B2 - Lens module - Google Patents

Description

  The present invention relates to a lens module, and more particularly to a kind of lens module.

  With the continuous development of science and technology, electronic devices are constantly evolving into smart devices. In addition to digital cameras, portable electronic devices such as tablet PCs and mobile phones have lens modules. It is arranged. In order to satisfy people's usage needs, there is a high demand for the quality of images of objects taken by lens modules. However, the image quality of the photographed object is greatly related to the coaxiality of the optical axis of each lens in the lens module.

  The lens module in the related art includes a lens barrel provided with a light passage hole and a lens group provided in the lens barrel. The lens group includes at least two optical lenses, and the light passage hole. The straight line passing through the geometric center of the optical axis and the optical axis of these optical lenses should overlap, i.e., a high degree of coaxiality must be ensured. In addition, the connection between the plurality of optical lenses needs to have very high stability. However, during the production and manufacturing process, the optical lenses are generally connected by an adhesive after uneven bonding or abutment, which is not only a single connection means but also a high coaxiality between the optical lenses. It is difficult to guarantee that it has stability.

  Therefore, there is a need to provide a new lens module.

  An object of the present invention is to provide a lens module having good coaxiality and high stability.

The technical solution of the present invention is as follows.
A first cylinder wall provided with a light transmission hole, a second cylinder wall that is bent and extended from the first cylinder wall, and an accommodation space formed by the first cylinder wall and the second cylinder wall A lens barrel, and a lens group including a first lens and a second lens housed in the housing space in order from the object side to the image side, and the optical axis of the first lens is A lens module overlapping the axis of the light passage hole,
The first lens includes a lower surface having a first slope, the second lens includes a first surface having a second slope, and the first slope and the second slope are The first slope and the second slope are each provided with a thread which is distributed in an annular shape, and the first slope and the second slope are provided on the first lens. The second lens is connected by a screw thread so that the optical axes are common.

  Preferably, the lower surface further includes a first extended surface and a second extended surface respectively connected to both ends of the first inclined surface, and the first extended surface is the second extended surface. The first surface has a first load surface and a second load surface connected to both ends of the second inclined surface, respectively, and the first load surface is The first load surface, the second stretch surface, the first load surface, and the second load surface are perpendicular to the optical axis and are further away from the optical axis than the second load surface.

  Preferably, the first inclined surface is inclined and extended from the first extending surface to the image side, and the second inclined surface is inclined and extended from the first load surface to the image side.

  Preferably, the first inclined surface is inclined and extended from the first extending surface to the object side, and the second inclined surface is inclined and extended from the first load surface to the object side.

  Preferably, the first load surface is in contact with the first extending surface, and the second load surface is in contact with the second extending surface.

  Preferably, the first slope and the second slope are centered on the optical axis.

  Preferably, the first lens further includes an upper surface opposed to the lower surface, and a first side surface connecting the upper surface and the lower surface, and the upper surface includes the first surface. The first wall is in contact with the surface of the cylindrical wall facing the housing space, and the first side surface is in contact with the surface of the second cylindrical wall facing the housing space.

  Preferably, the second lens further includes a second surface facing the first surface, and a second side surface connecting the first surface and the second surface, The second side surface is in contact with the surface of the second cylindrical wall that faces the housing space.

  Compared to the related art, the lens module provided by the present invention has the following beneficial effects. The lens group includes a first lens and a second lens, and the first lens includes a lower surface having a first slope, an upper surface opposed to the lower surface, and the upper surface. A first side surface connecting the lower surface; the upper surface abuts against a surface of the first cylindrical wall facing the accommodation space; and the first side surface is the second cylindrical wall It abuts against the surface facing the housing space, so that the optical axis of the first lens overlaps the axis of the light passage hole. The second lens has a second inclined surface, the first inclined surface and the second inclined surface are distributed in an annular shape, and each of the first inclined surface and the second inclined surface is mutually attached. A thread to be fitted is provided, and the first slope and the second slope are connected by a thread so that the first lens and the second lens have a common optical axis. It can be ensured that the lens module has high coaxiality and stability.

It is a schematic diagram which shows the structure of Example 1 of the lens module provided by this invention. It is a schematic diagram which shows the structure of the 1st lens in the lens module shown in FIG. It is a schematic diagram which shows the structure of the 2nd lens in the lens module shown in FIG. It is a schematic diagram which shows the structure of Example 2 of the lens module provided by this invention. It is a schematic diagram which shows the structure of the 1st lens in the lens module shown in FIG. It is a schematic diagram which shows the structure of the 2nd lens in the lens module shown in FIG.

  The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Of course, the embodiments to be described are only some embodiments of the present invention, and not all embodiments. Based on the embodiments according to the present invention, those skilled in the art need no creative effort, and all the other embodiments obtained are included in the claims of the present invention.

<Example 1>
As shown in FIG. 1, the lens module 100 includes a lens barrel 1 and a lens group 2 provided in the lens barrel 1 and connected to the lens barrel 1.

  The lens barrel 1 includes a first cylindrical wall 11 provided with a light transmission hole 111, a second cylindrical wall 13 that bends and extends from the first cylindrical wall 11, and the first cylindrical wall 11. An accommodation space 15 formed by the second cylindrical wall 13 is provided.

  The lens group 2 includes a first lens 3 and a second lens 4 housed in the housing space 15 in order from the object side to the image side, and the first lens 3 and the The optical axis of the second lens 4 overlaps the axis of the light transmission hole 111.

  As shown in FIG. 2, the first lens 3 is connected to the lower surface 31 facing the second lens 4, the upper surface 33 facing the lower surface 31, and the lower surface 31 and the upper surface 33. The first side surface 35 is provided. The upper surface 33 and the first side surface 35 are connected by a circular arc surface, and the upper surface 33 abuts on the surface of the first cylindrical wall 11 facing the housing space 15, and the first side surface 35. Is in contact with the surface of the second cylindrical wall 13 facing the accommodation space 15. The upper surface 33 and the first side surface 35 are in contact with the first cylindrical wall 11 and the second cylindrical wall 13, respectively, so that the optical axis of the first lens 3 is the light transmission hole 111. It overlaps with the axis.

  The lower surface 31 is distributed in an annular shape, and is provided with a first inclined surface 311 provided with a thread, a first extending surface 312 horizontally extending outwardly connected to both ends of the first inclined surface 311 and an optical axis. A second extending surface 313 that extends horizontally, a third extending surface 314 that is bent and extended from the second extending surface 313 to the light transmission hole 111, and a first extending surface 314 connected to the third extending surface 314. It has an optical surface 315. The first inclined surface 311 extends obliquely from the first extending surface 312 toward the image side.

  The upper surface 33 has a first plane 331, a second plane 333, a third plane 335, and a second optical surface 337 connected in order. The first plane 331 and the second plane 333 are connected by an arcuate surface, and the first plane 331 and the third plane 335 are provided at a distance from the first cylindrical wall 11, respectively. The second plane 333 is in contact with the surface of the first cylindrical wall 11 facing the accommodation space 15, and the light passage hole 111 is sufficient to expose the second optical surface 337. Has a diameter.

  As shown in FIG. 3, the second lens 4 includes a first surface 41 that faces the first lens 3, a second surface 43 that faces the first surface 41, and the first surface. 41 and a second side surface 45 connecting the second surface 43. The first surface 41 and the second side surface 45 are connected by a circular arc surface, and the second side surface 45 is in contact with the surface of the second cylindrical wall 13 that faces the housing space 15.

  The first surface 41 is distributed in an annular shape, and is provided with a second inclined surface 411 provided with a thread, a first load surface 412 extending horizontally outwardly connected to both ends of the second inclined surface 411, respectively. A second load surface 413 that extends horizontally to the optical axis, a third load surface 415 that extends from the first load surface 412 in a direction away from the light transmission hole 111, and extends away from the third load surface 415. The fourth load surface 416 extending horizontally and the second load surface 413 are connected to the fifth load surface 417 and the fifth load surface 417 which are bent and extended away from the light transmission hole 111. And a third optical surface 418.

  The first load surface 412 is in contact with the first extending surface 312 and is perpendicular to the optical axis, the second load surface 413 is in contact with the second extending surface 313, and Perpendicular to the optical axis.

  The second inclined surface 411 is inclined and extended from the first load surface 412 to the image side, and the thread of the second inclined surface 411 is fitted to the thread of the first inclined surface 311. Thus, the first inclined surface 311 and the second inclined surface 411 are connected by screws so that the first lens 3 and the second lens 4 have a common optical axis.

  The fourth load surface 416 is provided at a distance from the first extending surface 312.

  The second surface 43 includes a first connection surface 431, a second connection surface 433, and a fourth optical surface 435 that are sequentially connected. The first connection surface 431 and the second connection surface 433 are connected by an arc surface.

<Example 2>
As shown in FIG. 4, the lens module 200 includes a lens barrel 5 and a lens group 6 provided in the lens barrel 5 and connected to the lens barrel 5.

  The lens barrel 5 includes a first cylindrical wall 51 provided with a light transmission hole 511, a second cylindrical wall 53 that bends and extends from the first cylindrical wall 51, and the first cylindrical wall 51. An accommodation space 55 is provided that is surrounded by the second cylindrical wall 53.

  The lens group 6 includes a first lens 7 and a second lens 8 housed in the housing space 55 in order from the object side to the image side, and the first lens 7 and the The optical axis of the second lens 8 overlaps the axis of the light transmission hole 511.

  As shown in FIG. 5, the first lens 7 has a lower surface 71 that faces the second lens 8, an upper surface 73 that faces the lower surface 71, and a connection between the lower surface 71 and the upper surface 73. The first side 75 is provided. The upper surface 73 and the first side surface 75 are connected by a circular arc surface, and the upper surface 73 abuts on the surface of the first cylindrical wall 51 that faces the housing space 55, and the first side surface 75. Is in contact with the surface of the second cylindrical wall 53 toward the accommodation space 55. The upper surface 73 and the first side surface 75 abut against the first tube wall 51 and the second tube wall 53, respectively, so that the optical axis of the first lens 7 is the light passage hole 511. It overlaps with the axis.

  The lower surface 71 is distributed in an annular shape, and is provided with a first inclined surface 711 provided with a thread, a first extending surface 712 that is connected to both ends of the first inclined surface 711 and horizontally extends outward, and the optical axis. A second extending surface 713 that horizontally extends, a third extending surface 714 that is bent and extended from the second extending surface 713 in the optical axis direction, and a first optical surface 715 connected to the third extending surface 714. And a fourth stretched surface 716 that extends horizontally from the first stretched surface 712 to the outside. The first extended surface 712 and the fourth extended surface 716 are connected by an arc surface, and the first extended surface 712, the second extended surface 713, and the fourth extended surface 716 are optical axes. The first inclined surface 711 extends obliquely from the first extending surface 712 toward the object side.

  The upper surface 73 includes a first plane 731, a second plane 733, a third plane 735, and a second optical surface 737 that are connected in order. The first plane 731 and the second plane 733 are connected by an arcuate surface, and the first plane 731 and the third plane 735 are provided at a distance from the first cylindrical wall 51, respectively. The second flat surface 733 is in contact with the surface of the first cylindrical wall 51 facing the accommodation space 55, and the light passage hole 511 is sufficient to expose the second optical surface 737. Has a diameter.

  As shown in FIG. 6, the second lens 8 includes a first surface 81 that faces the first lens 7, a second surface 83 that faces the first surface 81, and the first surface. 81 and a second side surface 85 connecting the second surface 83, and the second side surface 85 is in contact with the surface of the second cylindrical wall 53 facing the accommodation space 55.

  The first surface 81 is distributed in an annular shape, and is provided with a second inclined surface 811 provided with a thread, a first load surface 812 extending horizontally outwardly connected to both ends of the second inclined surface 811, respectively. Light is transmitted from the second load surface 813 that is bent and extended in a direction away from the light transmission hole 511, the third load surface 814 that is horizontally extended outward from the first load surface 812, and the second load surface 813. A fourth load surface 815 that is bent and extended in a direction away from the hole 511 and a third optical surface 816 connected to the other end of the fourth load surface 815 are provided. The first load surface 812 and the third load surface 814 are connected by a circular arc surface.

  The first load surface 812 is in contact with the first extension surface 712 and perpendicular to the optical axis, the second load surface 813 is in contact with the second extension surface 713, and Perpendicular to the optical axis.

  The second slope 811 is inclined and extended from the first load surface 812 to the object side, and the thread of the second slope 811 is fitted to the thread of the first slope 711. Thus, the first inclined surface 711 and the second inclined surface 811 are connected by a screw thread so that the first lens 7 and the second lens 8 have a common optical axis.

  The third load surface 814 is provided at a distance from the fourth extending surface 716.

  The second surface 83 includes a first connection surface 831, a second connection surface 833, and a fourth optical surface 835 that are connected in order. The first connection surface 831 and the second connection surface 833 are connected by an arc.

  In the first embodiment and the second embodiment, the first slope and the second slope are centered on the optical axis.

  The lens module provided by the present invention has the following beneficial effects. The lens group includes a first lens and a second lens, and the first lens includes a lower surface having a first slope, an upper surface opposed to the lower surface, and the upper surface. A first side surface connecting the lower surface, the upper surface is in contact with a surface of the first cylindrical wall facing the accommodation space, and the first side surface is in the second cylindrical wall; The optical axis of the first lens overlaps the axis of the light transmission hole by abutting against the surface facing the accommodation space, the second lens has a second slope, and the first lens And the second slope are distributed in an annular shape, and a thread that fits to each of the first slope and the second slope is provided, and the first slope and the second slope are provided. The inclined surface of the first lens and the second lens are threaded so that the optical axis is common. Ri is connected, thereby, the lens module can be guaranteed to have a high coaxial degree and stability.

  The above description is only an embodiment of the present invention, and those skilled in the art can make improvements without departing from the creative concept of the present invention, all of which are included in the protection scope of the present invention.

Claims (7)

A first cylinder wall provided with a light transmission hole, a second cylinder wall that is bent and extended from the first cylinder wall, and an accommodation space formed by the first cylinder wall and the second cylinder wall A lens barrel, and a lens group including a first lens and a second lens housed in the housing space in order from the object side to the image side, and the optical axis of the first lens is A lens module overlapping the axis of the light passage hole,
The first lens includes a lower surface having a first slope, the second lens includes a first surface having a second slope, and the first slope and the second slope are The first slope and the second slope are each provided with a thread which is distributed in an annular shape, and the first slope and the second slope are provided on the first lens. And the second lens is connected by a screw thread so that the optical axis is common,
The lower surface further includes a first stretched surface and a second stretched surface connected to both ends of the first slope, respectively, and the first stretched surface is lighter than the second stretched surface. The first surface, apart from the axis, has a first load surface and a second load surface respectively connected to both ends of the second slope, and the first load surface is the second load surface. The first extension surface, the second extension surface, the first load surface, and the second load surface are perpendicular to the optical axis, and are further away from the optical axis than the load surface. Lens module. The first inclined surface is inclined and extended from the first extending surface to the image side, and the second inclined surface is inclined and extended from the first load surface to the image side. 2. The lens module according to 1 . The first inclined surface is inclined and extended from the first extending surface to the object side, and the second inclined surface is inclined and extended from the first load surface to the object side. 2. The lens module according to 1 . It said first load surface, the first contact with the extension surface, the second load surface is any one of claims 1 to 3, characterized in that in contact with the second extension surface The lens module according to Item 1. The lens module according to claim 1, wherein the first slope and the second slope are centered on the optical axis. The first lens further includes an upper surface opposed to the lower surface, and a first side surface connecting the upper surface and the lower surface, and the upper surface is formed on the first cylindrical wall. 2. The lens module according to claim 1, wherein the lens module is in contact with a surface facing the housing space, and the first side surface is in contact with a surface of the second cylindrical wall facing the housing space. The second lens further includes a second surface opposed to the first surface, and a second side surface connecting the first surface and the second surface, and the second lens 2. The lens module according to claim 1, wherein the side surface is in contact with a surface of the second cylindrical wall facing the accommodation space.

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