CN211348817U - Lens assembly - Google Patents

Abstract

The utility model provides a lens component, which comprises a lens cone and a lens group contained in the lens cone, wherein the lens cone comprises an upper lens cone and a lower lens cone which form a containing space for containing the lens group; the upper lens cone comprises a first upper cylinder wall with a light through hole and a second upper cylinder wall which is bent outwards and extends from the lower side of the first upper cylinder wall; the lens group comprises a first lens and a second lens which are arranged from the object side to the image side, the first lens is provided with a shape matched with the upper lens barrel and is contained in the upper lens barrel, and the second lens is contained in the lower lens barrel; the lower lens barrel is provided with a flange extending inwards from the image side end of the lower lens barrel, and the flange fixes the lens group in the accommodating space; the second lens is respectively fixed with the upper lens barrel and the lower lens barrel in an adhesive manner. The utility model discloses be the disconnect-type with the lens cone design, both need not accomplish that thickness is close unanimous, go up the lens cone and can make thiner, be favorable to reducing the camera lens size, can satisfy the requirement of market to the camera lens miniaturization.

Description

lens assembly

technical field

The present application belongs to the technical field of optical imaging, and in particular, relates to a lens assembly.

Background technique

The existing lens assembly generally includes a lens barrel 1' and a lens group 2' accommodated in the lens barrel 1'. As shown in FIG. 1, due to the limitation of the wall thickness of the lens barrel wall 1A', this structure makes the dimension A' impossible. further reduced. The existing lens assembly structure cannot meet the market requirements for the miniaturization of the lens.

Utility model content

The technical problem to be solved by this application is to provide a lens assembly, which aims to solve the problem that the existing lens assembly cannot be further miniaturized due to the limitation of the lens barrel structure.

In order to solve the above technical problems, the present application is implemented in this way, a lens assembly includes a lens barrel, and a lens group accommodated in the lens barrel, the lens barrel includes an upper lens barrel and a lower lens barrel; the upper lens barrel forming an accommodation space for accommodating the lens group with the lower lens barrel;

The upper lens barrel includes a first upper barrel wall with a light-passing hole and a second upper barrel wall that is bent and extended outward from the lower side of the first upper barrel wall;

The lens group includes a first lens and a second lens arranged from the object side to the image side, the first lens has a shape matched with the upper lens barrel, and is accommodated in the upper lens barrel, and the first lens Two lenses are accommodated in the lower lens barrel;

The lower lens barrel has a flange extending inward from its image side end, and the flange fixes the lens group in the receiving space;

The second lens is glued and fixed with the upper lens barrel and the lower lens barrel respectively.

Further, the upper lens barrel further includes a third upper barrel wall bent from the second upper barrel wall to the image side, and the third upper barrel wall is glued and fixed to the second lens.

Further, it also includes a hollow annular pressure ring disposed on the object side of the second lens, and the inner and outer sides of the pressure ring are respectively adhesively connected with the upper lens barrel and the lower lens barrel.

Further, the first lens includes a first optical part for imaging and a first bearing part arranged around the first optical part, and the second lens includes a second optical part for imaging and surrounds the first optical part A second bearing part provided on the second optical part, the first bearing part and the second bearing part are squatted and fixed.

Further, the first bearing portion includes a first object side surface close to the object side, a first image side surface disposed opposite to the first object side surface, and a first object side surface connecting the first object side surface and the first image side surface. one side;

The second bearing portion includes a second object side surface close to the object side, a second image side surface disposed opposite to the second object side surface, and a second side surface connecting the second object side surface and the second image side surface;

The first image side surface and the second object side surface are cambered and fixed.

Further, the first image side surface sequentially includes a first inclined surface bent and extended toward the image side and a first plane horizontally extended from the first inclined surface close to the optical axis in a direction close to the optical axis, and the second The object side surface sequentially includes a top surface extending horizontally along the direction close to the optical axis, a second inclined surface bent and extended from the top surface to the image side, and a side extending horizontally from the second inclined surface close to the optical axis. In the second plane, the first inclined surface and the second inclined surface are mutually cambered to form a cambered structure.

Further, the lens group further includes a light shielding sheet sandwiched between the first plane and the second plane.

Further, the lens group further includes a third lens, a fourth lens and a fifth lens arranged from the object side to the image side, and the fifth lens is in contact with the flange

Compared with the prior art, the present application has the beneficial effects that: the utility model adopts a new structural design, the lens barrel is designed into two parts, the upper lens barrel and the lower lens barrel, and the first lens and the second lens are respectively assembled correspondingly during assembly. into the upper lens barrel and the lower lens barrel, then assemble the upper lens barrel and the lower lens barrel, and finally use an adhesive to bond the second lens to the upper lens barrel and the lower lens barrel to form the whole lens assembly. Since the upper lens barrel 11 and the lower lens barrel 12 are designed to be separated, the thicknesses of the two do not need to be nearly the same, and the upper lens barrel can be made thinner, which is beneficial to reduce the size A. The lens of the present invention can meet the market's requirements for the miniaturization of the lens; in addition, since there is no lens barrel wall 1B as shown in FIG. 1 in this structure, the lens can protrude more, that is, the size B can be maximized, and the lens can be photographed. The tube also acts as a diaphragm, which can also solve the problem of stray light well.

Description of drawings

FIG. 1 is a cross-sectional view of the structure of a lens assembly in the prior art.

FIG. 2 is a schematic structural diagram of an embodiment of a lens assembly of the present invention.

FIG. 3 is a schematic structural diagram of the lens barrel in FIG. 2 .

FIG. 4 is a schematic structural diagram of the first lens and the second lens in FIG. 2 .

Detailed ways

In order to make the objectives, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

It should be noted that the orientation or positional relationship indicated by "up", "bottom", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the purpose of It is convenient to describe the application and to simplify the description, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the application.

An example of a lens assembly provided by the present invention is shown in FIG. 2 and FIG. 3 , including a lens barrel 1, and a lens group 2 accommodated in the lens barrel. The lens barrel 1 includes an upper lens barrel 11 and a lower lens barrel 12; The upper lens barrel 11 and the lower lens barrel 12 form an accommodation space for accommodating the lens group 2 . The upper lens barrel 11 includes a first upper barrel wall 111 with a light-passing hole H, and a second upper barrel wall 112 bent and extended outward from the lower side of the first upper barrel wall 111 ; the lens group 2 includes a self-object The first lens 21 and the second lens 22 are arranged laterally to the image side. In the figure, the upper side is the object side, and the lower side is the image side. The first lens 21 has a shape that matches the upper lens barrel 11 and accommodates In the upper lens barrel, the second lens 22 is accommodated in the lower lens barrel 12; the lower lens barrel 12 has a flange 121 extending inward from its image side end, and the flange 121 fixes the entire lens group 2 in the receiving space , the second lens 22 is respectively bonded and fixed with the upper lens barrel 11 and the lower lens barrel 12 using the adhesive 3 .

The utility model adopts a new structural design, and the lens barrel is designed into two parts, the upper lens barrel 11 and the lower lens barrel 12. When assembling, the first lens 21 and the second lens 22 are respectively assembled to the upper lens barrel 11 and the lower lens barrel 12 respectively. In the process, the upper lens barrel 11 and the lower lens barrel 12 are assembled, and finally the second lens group 22 is bonded with the upper lens barrel 11 and the lower lens barrel 12 by using the adhesive 3 to form the whole lens assembly. Since the upper lens barrel 11 and the lower lens barrel 12 are designed to be separated, the thicknesses of the two do not need to be approximately the same, and the upper lens barrel 11 can be made thinner, which is conducive to reducing the size A. The lens of the present invention can meet the market's requirements for the miniaturization of the lens. In addition, since there is no lens barrel wall 1B as shown in Figure 1 in this structure, the lens can protrude more, that is, the size B can be maximized, and the lens can be photographed. The barrel 11 acts as a diaphragm at the same time, which can solve the problem of stray light well.

As shown in FIG. 2 , the first lens 21 is not only constrained by the second upper barrel wall 112 , but also constrained by the inner wall of the first upper barrel wall 111 , so that the force on the upper lens barrel 11 is more uniform. In this embodiment, the upper lens barrel 11 may also be provided with a third upper barrel wall 113 bent from the second upper barrel wall 112 to the image side, and the third upper barrel wall 113 and the second lens glue 22 are glued and fixed, as shown in FIG. 2 , shown in Figure 3. During the specific assembly, the upper lens barrel 11 is sleeved into the lower lens barrel 12 , the lower end surface of the third upper barrel wall 113 abuts on the second lens 22 , and the outer wall of the third upper barrel wall 113 and the inner wall of the lower lens barrel 12 are connected. There is a gap between, and the adhesive 3 is filled at the gap. Preferably, a hollow annular pressure ring 4 can be set at the gap, and the inner and outer sides of the pressure ring 4 pass through the adhesive 3 and the upper lens barrel 11, The lower lens barrel 12 is glued and connected.

Further, as shown in FIG. 4 , the first lens 21 includes a first optical part 211 for imaging and a first bearing part 212 disposed around the first optical part 211 , and the second lens 22 includes a first optical part 211 for imaging The second optical part 221 and the second carrying part 222 arranged around the second optical part 221, the first carrying part 212 and the second carrying part 222 are spliced and fixed. Specifically, the first bearing portion 212 includes a first object side surface 2121 close to the object side, a first image side surface 2122 opposite to the first object side surface 2121, and a first object side surface 2121 and the The first side surface 2123 of the first image side surface 2122; the second bearing portion 222 includes a second object side surface 2221 close to the object side, a second image side surface 2222 disposed opposite to the second object side surface, and connecting the second object side surface 2222. Two object side surfaces 2221 and the second side surface 2223 of the second image side surface 2222, the first image side surface 2122 and the second object side surface 2221 are occluded and fixed. A specific ridge structure is shown in Figure 4. The first image side surface 2122 sequentially includes a first inclined surface 21221 bent and extended toward the image side along the direction close to the optical axis, and a first inclined surface 21221 close to the optical axis from the first inclined surface 21221. A horizontally extending first plane 21222, the second object side surface 2221 sequentially includes a horizontally extending top surface 22211 along a direction close to the optical axis, a second inclined surface 22212 bent and extended from the top surface 22211 to the image side, and A second flat surface 22213 extending horizontally from the side of the second inclined surface 22212 close to the optical axis, the first inclined surface 21221 and the second inclined surface 22212 are cambered to each other to form a cambered structure, which is beneficial to elevate the first lens and the assembly accuracy and assembly stability of the second lens. In this embodiment, the lens group 2 may further include a light shielding sheet 26, as shown in FIG. 2, sandwiched between the first plane 21222 and the second plane 22213 to shield stray light.

Further, the lens group 2 may further include a third lens 23 , a fourth lens 24 and a fifth lens 25 arranged from the object side to the image side direction, and the fifth lens 25 is in contact with the flange 121 . and between the second lens 22 and the third lens 23 , between the third lens 23 and the fourth lens 24 , and between the fourth lens 24 and the fifth lens 25 The clip is provided with a light shielding sheet 26 to shield stray light.

It can be understood that the above-mentioned embodiments are exemplary and should not be construed as limitations to the present invention. Those of ordinary skill in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the present invention. All should be included within the protection scope of this application.

Claims (8)

1. A lens assembly comprising a lens barrel, and a lens group housed in the lens barrel, wherein the lens barrel comprises an upper lens barrel and a lower lens barrel, and the upper lens barrel and the lower lens barrel form a an accommodation space for accommodating the lens group; The upper lens barrel includes a first upper barrel wall with a light-passing hole and a second upper barrel wall that is bent and extended outward from the lower side of the first upper barrel wall; The lens group includes a first lens and a second lens arranged from the object side to the image side, the first lens has a shape matched with the upper lens barrel, and is accommodated in the upper lens barrel, and the first lens Two lenses are accommodated in the lower lens barrel; The lower lens barrel has a flange extending inward from its image side end, and the flange fixes the lens group in the receiving space; The second lens is glued and fixed with the upper lens barrel and the lower lens barrel respectively. 2. The lens assembly according to claim 1, wherein the upper lens barrel further comprises a third upper barrel wall bent from the second upper barrel wall to the image side, the third upper barrel wall and the The second lens is glued and fixed. 3 . The lens assembly of claim 1 , further comprising a hollow annular pressure ring disposed on the object side of the second lens, the inner and outer sides of the pressure ring are respectively connected to the upper mirror. 4 . The barrel and the lower lens barrel are adhesively connected. 4 . The lens assembly of claim 1 , wherein the first lens comprises a first optical part for imaging and a first bearing part arranged around the first optical part, and the second lens It includes a second optical part for imaging and a second carrying part arranged around the second optical part, the first carrying part and the second carrying part are spliced and fixed. 5 . The lens assembly of claim 4 , wherein the first bearing portion comprises a first object side surface close to the object side, a first image side surface disposed opposite to the first object side surface, and a first image side surface connected to the object side. 6 . the first side of the first object side and the first side of the first image; The second bearing portion includes a second object side surface close to the object side, a second image side surface disposed opposite to the second object side surface, and a second side surface connecting the second object side surface and the second image side surface; The first image side surface and the second object side surface are cambered and fixed. 6. The lens assembly of claim 5, wherein The first image side surface sequentially includes a first inclined surface bent and extended toward the image side and a first plane horizontally extended from the first inclined surface close to the optical axis along the direction close to the optical axis. The direction close to the optical axis sequentially includes a top surface extending horizontally, a second inclined surface bent and extended from the top surface to the image side, and a second plane extending horizontally from the side of the second inclined surface close to the optical axis , the first slanted surface and the second slanted surface are cambered to each other to form a cambered structure. 7. The lens assembly of claim 6, wherein the lens group further comprises a light shielding sheet sandwiched between the first plane and the second plane. 8 . The lens assembly of claim 1 , wherein the lens group further comprises a third lens, a fourth lens and a fifth lens arranged from the object side to the image side, the fifth lens and the The flange abuts.

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