CN101042439A - Lens and lens module with same - Google Patents

Abstract

The present invention relates to a lens, which includes two oppositely arranged lens surfaces, each of which includes an optical region for realizing optical functions and a mechanism region connected to the optical region, wherein at least one of the The mechanism area on the surface of the lens is provided with a protruding structure or/and a receiving structure. The present invention also provides a lens module with a plurality of such lenses, which has the characteristics of simple assembly and high assembly yield.

Description

A kind of lens and the lens module with this kind of lens

【Technical field】

The invention relates to a lens and a lens module with the lens, which can be applied to imaging system fields such as cameras and video cameras.

【Background technique】

With the development of multimedia technology, camera systems such as digital cameras and video cameras are more and more favored by consumers. In existing camera systems such as digital cameras, the lens module generally consists of a lens barrel and a plurality of lenses housed in the lens barrel. In order to overcome the aberration of the lens module and improve the imaging quality, each lens needs to be specially designed, and this design is carried out under the ideal condition that each lens is completely concentric. However, in the lens assembly stage, there will be a certain deviation in the concentric alignment of the lenses, and this deviation will affect the imaging quality of the combined lenses.

The lens module assembly method in the prior art usually puts each lens on a special assembly lathe, aligns the lens barrel with each lens through a centering instrument, determines the center, and then assembles each lens into the lens barrel, In order to make the optical axes of the lenses overlap to meet the predetermined concentricity requirements. However, due to the numerous steps and complicated operation of the above-mentioned lens module assembly process, it will lead to disadvantages such as low assembly efficiency and low assembly yield of the lens module.

In view of this, it is necessary to provide a lens and a lens module having the lens, which can have the characteristics of simple assembly and high assembly yield.

【Content of invention】

A lens and a lens module having the lens will be described below with several embodiments, which can have the characteristics of simple assembly and high assembly yield.

A lens, which includes two opposite lens surfaces, each of the two lens surfaces includes an optical area for realizing optical functions and a mechanism area connected to the optical area, wherein at least one of the lens surfaces The mechanism area is provided with a plurality of protruding structures or/and receiving structures.

A lens module, comprising: a lens barrel; a first lens accommodated in the lens barrel, the first lens has a first lens surface, and the first lens surface includes a The first optical area and a first mechanism area connected with the first optical area, the first mechanism area is provided with a plurality of protruding structures; a second lens, which is accommodated in the lens barrel, the second lens It has a second lens surface, the second lens surface includes a second optical area for realizing optical functions and a second mechanism area connected with the second optical area, and the second mechanism area is provided with a plurality of accommodation structures The first lens surface is opposite to the second lens surface, and the plurality of accommodation structures in the second mechanism area are matched with the plurality of protrusion structures in the first mechanism area, and the plurality of protrusion structures are accommodated in it Inside.

Compared with the prior art, the lens is provided with a protruding structure or/and a housing structure. During the assembly process of the lens module, the housing structure of one lens cooperates with the protruding structure of the other lens to make the housing structure The protruding structure is accommodated therein to fix the relative positions of the lenses so that the optical axes of the lenses coincide and ensure concentricity, which has the characteristics of simple assembly and high assembly yield.

【Description of drawings】

FIG. 1 is a schematic structural cross-sectional view of a lens with a protrusion structure provided by an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of a lens with a housing structure provided by another embodiment of the present invention.

FIG. 3 is a schematic structural cross-sectional view of a lens having both a protruding structure and a receiving structure provided by another embodiment of the present invention.

FIG. 4 is a schematic cross-sectional view of a lens module provided by an embodiment of the present invention.

FIG. 5 is a top view of the aperture plate of the lens module shown in FIG. 4 .

【Detailed ways】

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

Referring to FIG. 1 , an embodiment of the present invention provides a lens 10 with a plurality of protrusion structures 16 , which has two opposite lens surfaces 10 a and 10 b.

The lens surface 10 b includes an optical area 12 and a mechanism area 14 . The optical zone 12 is located at the central portion of the lens 10, which can be used to transmit light to achieve optical performance. The structural area 14 is connected to the optical area 12 . During assembly, the mechanism area 14 may come into contact with other optical elements, such as lenses, and may support the optical area 12 . The lens 10 can be made of plastic or other materials, such as glass.

A plurality of protruding structures 16 are arranged in the mechanism area 14 . The shape of the protruding structure 16 can be a cylinder, a prism, or other shapes. The protruding structure 16 is integrally formed with the lens 10 . Preferably, the plurality of protruding structures 16 are uniformly distributed along a circumferential direction around the optical axis of the lens 10 . For example, when the mechanism area 14 is provided with two protruding structures 16, the line between the two protruding structures 16 and the center of the lens 10 forms an included angle of 180 degrees; when the mechanism area 14 is provided with three protruding structures 16, The connection line between the adjacent protruding structures 16 and the center of the lens 10 forms an included angle of 120 degrees; horn.

It can be understood that the lens surface 10a also includes two parts, the optical region and the mechanism region corresponding to the optical region 12 and the mechanism region 14 of the lens surface 10b, and the protrusion structure 16 can also be formed on the mechanism of the lens surface 10a. area.

Referring to FIG. 2 , another embodiment of the present invention provides a lens 20 with a plurality of receiving structures 26 , which has two opposite lens surfaces 20 a and 20 b.

The lens surface 20 a includes an optical area 22 and a mechanism area 24 . The optical zone 22 is located in the central portion of the lens 20, which can be used to transmit light to achieve optical performance. The structural area 24 is connected to the optical area 22 . During assembly, the mechanism area 24 may come into contact with other optical elements, such as lenses, and may support the optical area 22 . The material of the lens 20 can be selected from plastic, or other materials, such as glass.

The mechanism area 24 is provided with a plurality of receiving structures 26 , which can cooperate with the plurality of protrusion structures 16 of the above-mentioned lens 10 . The receiving structure 26 and the lens 20 are integrally formed. The receiving structure 26 can be a groove for receiving the protruding structure 16 .

It can be understood that the lens surface 20b also includes two parts, the optical region and the mechanism region corresponding to the optical region 22 and the mechanism region 24 of the lens surface 20b, and the housing structure 26 can also be formed on the mechanism of the lens surface 20b. area.

Referring to FIG. 3 , another embodiment of the present invention provides a lens 30 having a protruding structure 36 and a receiving structure 38 . The surface 30 a of the lens 30 includes an optical region 32 and a mechanism region 34 . The optical region 32 is used to achieve optical performance. The mechanism area 34 is provided with a protruding structure 36 and a receiving structure 38 . The lens 30 can cooperate with another lens provided with a corresponding receiving structure and a protrusion structure.

Referring to FIG. 4 and FIG. 5 , a lens module 100 including the lens 10 and the lens 20 will be described below. The lens module also includes a lens barrel 40 , an aperture plate 50 , a filter 60 and a spacer ring 70 .

As shown in FIG. 4 , the lens barrel 40 sequentially accommodates the lens 10 , the aperture plate 50 , the lens 20 , the spacer ring 70 and the filter 60 from the object side to the image side.

The lens barrel 40 includes a main body 42 and a lens barrel front end 44 . The main body 42 is cylindrical and can be used to accommodate the lens 10 , the aperture plate 50 , the second lens 20 , the spacer ring 70 and the filter 60 . The lens barrel front end 44 is located at the light incident end of the cylindrical main body 42 , and is integrally formed with the main body 42 . The front end 44 of the lens barrel is also provided with a funnel-shaped light entrance hole 46 whose diameter gradually changes along the thickness of the front end 44 of the lens barrel.

The aperture plate 50 is accommodated in the main body portion 42 and located between the first lens 10 and the second lens 20 . The aperture plate 50 is ring-shaped, and a receiving structure 52 (as shown in FIG. 5 ) matched with the protruding structure 16 is provided on its outer circumference.

The filter 60 is accommodated in the main body 42 and located at the other end opposite to the front end 44 of the lens barrel. The filter 60 can be an infrared cut filter or an ultraviolet cut filter, and its material can be glass or resin.

The spacer ring 70 is accommodated in the main body 42 and located between the filter 60 and the second lens 20 . The spacer ring 70 is ring-shaped and is used to space the filter 60 from the second lens 20 by a certain distance to prevent damage caused by contact or collision between the two.

During the assembly process of the lens module 100, the following steps are sequentially included:

The lens 10 is placed in the cylindrical body portion 42 of the lens barrel 40, the surface 10a of the lens 10 faces and abuts against the front end 44 of the lens barrel, and the outer peripheral surface of the lens 10 fits the inner peripheral surface of the main body portion 42 and closely integrated with it.

The aperture plate 50 is loaded into the main body 42 , and the receiving structure 52 of the aperture plate 50 is matched with the protruding structure 16 .

The lens 20 is packed into the main body portion 32, and the surface 20a of the second lens 20 provided with the housing structure 26 faces the surface 10b of the first lens 10 provided with the protruding structure 16, and the housing structure 26 accommodates the protruding structure 16 in the within it.

The spacer ring 70 is fitted into the main body portion 42 so that it abuts against the second lens 20 .

Insert the optical filter 60 into the main body 42 and make it abut against the spacer ring 70; then the above-mentioned lens module 100 can be obtained.

Since the lens 10 and the lens 20 are respectively provided with a protruding structure 16 and a housing structure 26, when the lens module 100 is assembled, the protruding structure 16 of the lens 10 can be matched with the housing structure 26 of the lens 20, so that the protruding The structure 16 is accommodated in the accommodating structure 26 to fix the relative positions of the lenses 10 and 20 ; the optical axes of the lenses 10 and 20 can fully coincide to ensure better concentricity. This setting can make the lens module 100 have the characteristics of simple assembly and high assembly yield.

It can be understood that, in the lenses 10, 20, 30 provided by the embodiments of the present invention, the protruding structure or/and the receiving structure are not limited to being arranged on one lens surface of the lens, and also on two opposite lens surfaces of the lens. The protruding structure or/and the receiving structure may be provided. For example, when the lens module includes three or more lenses, the protruding structures or/and receiving structures provided on the two lens surfaces of one lens can be respectively connected with the receiving structures of the other two lenses adjacent to the lens. Or/cooperate with the protruding structure.

In addition, those skilled in the art can also make other changes within the spirit of the present invention, such as appropriately changing the number, shape, position and distribution of protrusion structures and receiving structures, as long as they do not deviate from the technical effects of the present invention. These changes made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims (12)

1. A lens comprising two opposite lens surfaces, each of which includes an optical zone for realizing optical functions and a mechanism zone connected to the optical zone, characterized in that at least one of the The mechanism area on the surface of the lens is provided with a plurality of protrusion structures or/and accommodation structures. 2. The lens according to claim 1, wherein the lens is a plastic lens. 3. The lens as claimed in claim 1, wherein the shapes of the plurality of protruding structures are selected from cylinders and prisms. 4. The lens as claimed in claim 1, wherein the plurality of receiving structures are grooves. 5 . The lens according to claim 1 , wherein the plurality of protruding structures and/or receiving structures are integrally formed with the lens. 6 . The lens according to claim 1 , wherein the plurality of protruding structures and/or receiving structures are uniformly distributed along a circumferential direction around the optical axis of the lens. 7. A lens module, comprising: a lens tube; A first lens, which is accommodated in the lens barrel, the first lens has a first lens surface, the first lens surface includes a first optical area and a first mechanism area connected to the first optical area , the first mechanism region is provided with a plurality of protruding structures; A second lens, which is accommodated in the lens barrel, the second lens has a second lens surface, the second lens surface includes a second optical area and a second mechanism area connected to the second optical area , the second institutional area has a plurality of containment structures; The first lens surface is opposite to the second lens surface, and the plurality of receiving structures in the second area cooperate with the plurality of protrusion structures in the first area, and accommodate the plurality of protrusion structures therein. 8. The lens module as claimed in claim 7, characterized in that an annular aperture plate is arranged between the first lens and the second lens of the lens module, and the outer circumference of the aperture plate is provided with the protruding structure. Compatible containment structures. 9 . The lens module according to claim 7 , wherein the lens barrel accommodates the first lens and the second lens sequentially from the object side to the image side. 10 . The lens module according to claim 9 , further comprising a filter, the filter is accommodated in the lens barrel and is located on the image side of the second lens. 11 . 11. The lens module according to claim 10, wherein the lens module further comprises a spacer ring, which is arranged between the filter and the second lens and connects the filter to the second lens. The lenses are separated. 12. A lens module, comprising: a lens tube; A first lens, which is accommodated in the lens barrel, the first lens has a first lens surface, the first lens surface includes a first optical area and a first mechanism area connected to the first optical area , the first mechanism area is provided with at least one protruding structure and at least one receiving structure; A second lens, which is accommodated in the lens barrel, the second lens has a second lens surface, the second lens surface includes a second optical area and a second mechanism area connected to the second optical area , the second mechanism area is provided with a receiving structure and a protruding structure that cooperate with the protrusion structure and the accommodation structure of the first mechanism area; The first lens surface and the second lens surface are arranged oppositely, the protrusion structure and the accommodation structure of the first mechanism area cooperate with the accommodation structure and the protrusion structure of the second mechanism area, and the accommodation structure holds the protrusion The structure is contained within it.

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