CN206339781U - Imaging lens - Google Patents

Abstract

The utility model relates to an optical element, in particular to an imaging lens, which includes a lens barrel, a first lens and a second lens fixed in the lens barrel and stacked on top of each other, and the first lens and the second lens. A positioning structure, the positioning structure includes: a convex portion arranged on the non-optically effective portion of the first lens, a concave portion provided on the non-optically effective portion of the second lens, and the concave portion has an arc surface, and the convex portion There is an inclined surface, the convex part is at least partially inserted into the concave part, and the inclined surface of the convex part and the arc surface of the concave part resist each other. It can be seen from this that the two lenses are line fit when stacked, which not only facilitates centering, but also improves the stability of the two lenses when they are supported by the line fit, and improves the positioning accuracy of each lens.

Description

imaging lens

technical field

The utility model relates to an optical element, in particular to an imaging lens applied to a portable electronic device.

Background technique

At present, in recent years, portable electronic devices have developed rapidly, such as smart electronic devices, tablet computers, etc., which have flooded the lives of modern people, and imaging lenses mounted on portable electronic devices have also developed rapidly. However, with the advancement of technology, users have higher and higher requirements for the imaging quality of imaging lenses.

Among them, the lens group, as the main optical element in the imaging lens, is mainly used for imaging. It is generally composed of multiple lenses stacked. Instability and other issues, it will have a certain impact on the positioning accuracy of each lens, and then affect the final imaging quality of the entire imaging lens.

Therefore, how to improve the stability of the support between the lenses in the lens group, facilitate the centering between the lenses, improve the positioning accuracy of each lens, and improve the imaging quality are currently problems to be solved.

Utility model content

In order to overcome the deficiencies of the prior art, the utility model provides an imaging lens, which can improve the stability of the support between the lenses when the lenses in the imaging lens are stacked, thereby facilitating the connection between the lenses and the lenses. Centering improves the positioning accuracy of the lenses during stacking to improve the final imaging quality.

In order to achieve the above purpose, the utility model provides an imaging lens, comprising:

barrel;

A first lens and a second lens stacked on top of each other held in the lens barrel, the first lens includes a first optically effective part for imaging and a first non-optical effective part surrounding the optically effective part; the first non-optical effective part The part includes a first side wall held on the lens barrel; the second lens includes a second optically effective part for imaging and a second non-optically effective part surrounding the optically effective part; a second side wall on the barrel;

A positioning structure for positioning the first lens and the second lens, which includes:

The raised portion provided on the first non-optically effective portion, the raised portion includes a first receiving surface extending from the first side wall toward the direction of the optical axis, and a first receiving surface extending obliquely from the first receiving surface toward the direction of the second lens The first inclined surface, the second receiving surface extending along the first inclined surface toward the direction of the optical axis, the second inclined surface extending obliquely along the second receiving surface toward a direction away from the second lens, and extending along the second inclined surface in a direction bent toward the optical axis the third receiving surface;

A recessed portion disposed in the second non-optically effective portion corresponding to the protruding portion, the recessed portion includes a first connection surface extending from the second side wall to the direction of the optical axis, along the first connection surface a third slope extending obliquely toward a direction away from the first lens, a second connection surface extending along the third slope toward the optical axis, a first arc surface extending along the second connection surface in a direction bent toward the first lens, a third connecting surface bent and extended along the first arc surface toward the direction of the optical axis;

The protruding part is at least partially inserted into the recessed part, and the second inclined surface is opposed to the first arc surface.

Compared with the prior art, the utility model has a mutual positioning structure between the first lens and the second lens in the whole imaging lens, and the positioning structure includes the first non-optically effective part of the first lens. The convex portion, and the concave portion provided on the second non-optically effective portion of the second lens, and the convex portion is used to be inserted into the concave portion. At the same time, because the concave part includes a first arcuate surface that bends and extends along the second connecting surface toward the direction of the first lens, and the convex part includes a second inclined surface that extends obliquely along the second receiving surface toward the direction away from the second lens. , and the slope of the convex part is opposed to the first curved surface of the concave part, so that the two lenses are line-matched when they are stacked on each other, ensuring that the two lenses can achieve self-calibration when they are centered, and it is convenient for alignment At the same time, the line fit can also improve the stability of mutual support between the two lenses, thereby improving the positioning accuracy of each lens and improving the imaging quality of the final lens group.

Further, the first receiving surface is opposed to the first connecting surface, the first inclined surface is opposed to the third inclined surface, the second receiving surface is separated from the second connecting surface, and the The third receiving surface is separated from the third connection surface.

Moreover, the second receiving surface is parallel to the second connecting surface, and the third receiving surface is parallel to the third connecting surface.

Alternatively, the second receiving surface is opposed to the second connecting surface, the first inclined surface is opposed to the third inclined surface, the first receiving surface is separated from the first connecting surface, and the first inclined surface is separated from the first connecting surface. The three receiving surfaces are separated from the third connection surface.

Moreover, the first receiving surface is parallel to the first connecting surface, and the third receiving surface is parallel to the third connecting surface.

Description of drawings

FIG. 1 is a schematic structural view of an imaging lens according to a first embodiment of the present invention;

Fig. 2 is a schematic diagram of the assembly of the lens 1 and the lens 2 stacked when the first receiving surface of the convex part and the first connecting surface of the concave part are opposed to each other in the first embodiment of the utility model;

Fig. 3 is a partial enlarged view of part A in Fig. 2;

Fig. 4 is a schematic diagram of the assembly of the lens 1 and the lens 2 stacked when the second receiving surface of the raised part and the second connecting surface of the concave part are opposed to each other in the first embodiment of the utility model;

Fig. 5 is a partial enlarged view of part B in Fig. 4;

Fig. 6 is a schematic diagram of the assembly of the lens 1 and the lens 2 stacked when the first receiving surface of the protruding part and the first connecting surface of the concave part are opposed to each other in the second embodiment of the present invention.

Among them, 1 is the first lens, 11 is the first optically effective part, 12 is the non-first optically effective part, 13 is the convex part, 131 is the first receiving surface, 132 is the first slope, 133 is the second receiving surface , 134 is the second slope, 135 is the third receiving surface, 14 is the concave part; 2 is the second lens, 21 is the optical effective part, 22 is the non-optical effective part, 23 is the concave part, 231 is the first connection surface, 232 is the third inclined surface, 233 is the second connecting surface, 234 is the first arc surface, 235 is the third connecting surface, 24 is the protrusion; 3, 4, 5 and 6 are lenses; 9 is the lens barrel, 10 is Blackout film.

detailed description

In order to make the purpose, technical solutions and advantages of the present utility model clearer, various implementation modes of the present utility model will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that in each implementation manner of the present utility model, many technical details are proposed in order to enable readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

The first embodiment of the present invention relates to an imaging lens, as shown in FIG. 1 , FIG. 2 and FIG. 3 , comprising a lens barrel 9 and a plurality of lenses held in the lens barrel 9 . Wherein, in this embodiment, there are six lenses in total, namely lens 1 to lens 6 . Moreover, there are positioning structures for mutual positioning between the first lens 1 and the second lens 2 . It can be understood that any two lenses stacked on top of each other can be provided with the positioning structure. Herein, "first lens" and "second lens" refer to any two lenses, and are not limited by the arrangement of the lenses in the drawings.

Specifically, as shown in Figures 1 and 2, the first lens 1 includes a first optically effective portion 11 for imaging and a first non-optically effective portion 12 surrounding the first optically effective portion 11; meanwhile, the first optically effective portion 11 A non-optically effective portion 12 includes a first side wall 121 fixed on the lens barrel 9 . In addition, the second lens 2 includes a second optically effective portion 21 for imaging and a second non-optically effective portion 22 surrounding the optically effective portion 21; The second side wall 221.

In addition, as shown in FIG. 3 , the positioning structure includes: a raised portion 13 disposed on the first non-optically effective portion 12 of the first lens 1 . Meanwhile, as shown in FIG. 3 , the raised portion 13 includes a first receiving surface 131 extending from the first side wall 121 toward the optical axis, and a first slope 132 extending obliquely from the first receiving surface 131 toward the direction of the lens 2 , the second receiving surface 133 extending along the first inclined surface 132 toward the direction of the optical axis, the second inclined surface 134 extending obliquely along the second receiving surface 133 toward a direction away from the second lens 2, and the direction along the second inclined surface 134 facing the optical axis The third receiving surface 135 is formed by bending and extending.

The positioning structure also includes: a recessed portion 23 disposed in the second non-optically effective portion 22 of the second lens 2 at a position corresponding to the protruding portion 13 . Meanwhile, as shown in FIG. 3 , the concave portion 23 includes a first connecting surface 231 extending from the second side wall 221 to the optical axis direction, and a third inclined surface 232 extending obliquely along the first connecting surface 231 toward a direction away from the lens 1 , the second connection surface 233 extending along the third inclined surface 232 toward the direction of the optical axis, the first arc surface 234 extending along the second connection surface 233 toward the direction of the lens 1, and the first arc surface 234 extending along the first arc surface 234 toward the direction of the optical axis The third connecting surface 235 is bent and extended.

Moreover, the protrusion 13 in the positioning structure is partially inserted into the recess 23 , and the second slope 134 of the protrusion 13 is opposed to the first arc 234 in the recess 23 .

From the above, it is not difficult to find that since the first lens 1 and the second lens 2 in the entire imaging lens have a positioning structure for mutual positioning, the second inclined surface 134 of the convex portion 13 is directly connected to the first arc surface of the concave portion 23. 232 against each other, so that the two lenses are line fit when they are stacked on each other, ensuring that the two lenses can achieve self-calibration when they are centered. While it is convenient to center, the line fit can also improve the mutual The stability of the support can improve the positioning accuracy of each lens, so as to improve the imaging quality of the final lens group.

In addition, it is worth mentioning that, in this embodiment, except that the second inclined surface 134 of the convex portion 13 of the first lens 1 and the first arc surface 234 of the concave portion 24 of the second lens 2 are opposed to each other, as As shown in FIGS. 2 and 3 , between the first receiving surface 131 of the raised portion 13 and the first connecting surface 231 of the recessed portion 23 , and between the first inclined surface 132 of the raised portion 13 and the third inclined surface 232 of the recessed portion 23 between the second receiving surface 133 of the raised portion 13 and the second connecting surface 233 of the recessed portion 23, and the third connecting surface 135 of the raised portion 13 and the third connecting surface of the recessed portion 23 235 homogeneous phase separation. It can be seen from this that the above-mentioned structure can further improve the stability when the two lenses lean against each other, thereby further improving the positioning accuracy of each lens when stacked.

At the same time, it should be noted that, as shown in FIGS. 2 and 3 , when the third receiving surface 135 of the protruding portion 13 and the third connecting surface 235 of the concave portion 23 are separated from each other, the first lens 1 After stacking with the second lens 2, a larger accommodating area will be formed between the third bearing surface 135 of the first lens 1 and the third connecting surface 235 of the second lens 2, and the accommodating area will also It can be used to place a shading sheet 10 to block unwanted light from entering the lens group.

Moreover, in order to make the support between the first lens 1 and the second lens 2 more stable and the positioning more accurate, the first receiving surface 131, the second receiving surface 133, the third receiving surface 135 of the raised portion 13, and The first connecting surface 231, the second connecting surface 233, and the third connecting surface 235 of the recessed part 23 can all adopt a planar design, so that when the lens 1 and the projection 2 are stacked on each other, the first receiving surface of the raised part 13 131 and the first connection surface 231 of the recessed part 23 can be completely attached, and between the second receiving surface 133 of the raised part 13 and the second connecting surface 233 of the recessed part 23, and the third receiving surface of the raised part 13 135 and the third connecting surface 235 of the recessed portion 23 are separated and parallel to each other, so that the stability and accuracy of the two lenses leaning against each other can be further improved.

In addition, as another stacking method, as shown in FIGS. 4 and 5 , except that the second inclined surface 134 of the convex portion 13 of the first lens 1 and the first arc surface 234 of the concave portion 24 of the second lens 2 are mutually In addition to resisting, as shown in Figure 4 and Figure 5, the second receiving surface 133 of the protrusion 13 is also opposed to the second connecting surface 233 of the recess 23, and the first receiving surface 131 of the protrusion 13 is in contact with the recess The first connecting surfaces 231 of the portion 23 , the third receiving surface 135 of the protruding portion 13 and the third connecting surface 235 of the recessed portion 23 are separated from each other. It can be seen that, with the above-mentioned structure, the stable bearing between the two lenses can also be realized.

At the same time, in order to ensure more stable abutment between the first lens 1 and the second lens 2 and more accurate positioning when adopting this stacking method, the first receiving surface 131 of the raised portion 13, the second The receiving surface 133, the third receiving surface 135, and the first connecting surface 231, the second connecting surface 233, and the third connecting surface 235 of the recessed portion 23 can adopt a planar design, so that when the first lens 1 and the second lens 2 After stacking each other, the second receiving surface 133 of the protruding part 13 and the second connecting surface 233 of the recessed part 23 can be completely attached, and the first connecting surface 131 of the protruding part 13 and the first connection of the recessed part 23 The surfaces 231, as well as the third receiving surface 135 of the raised portion 13 and the third connecting surface 235 of the concave portion 23 are separated from and parallel to each other, so that the mutual support of the first lens 1 and the second lens 2 can be further improved. Stability and precision when leaning.

Moreover, it should be noted that, in this embodiment, the positioning structure of the mutual positioning between the first lens 1 and the second lens 2 can also be applied to any other lens stacked by two adjacent lenses, and in this embodiment No further elaboration will be given in the implementation manner.

The second embodiment of the present invention relates to an imaging lens, the second embodiment is substantially the same as the first embodiment, the main difference is that in the first embodiment, the positioning structure is arranged on the first lens 1 Above the second lens 2, that is, the first lens 1 is close to the object side of the imaging lens; in this embodiment, the first lens 1 is arranged below the second lens 2, that is, the first lens 1 is close to the image of the imaging lens. side.

Those of ordinary skill in the art can understand that the above-mentioned embodiments are specific examples for realizing the utility model, and in practical applications, various changes can be made to it in form and details without departing from the utility model spirit and scope.

Claims (5)

1. a kind of imaging lens, it is characterised in that include：

Lens barrel；

Mutually folded the first lens and the second lens set in lens barrel are retained on, the first lens include the first optics for being imaged Effective portion and first non-optical effective portion around the effective portion of the optics；First non-optical effective portion includes being retained on lens barrel The first side wall；Second lens include the effective portion of the second optics for being imaged and non-optical had around the second of the effective portion of the optics Effect portion；Second non-optical effective portion includes the second sidewall being retained on lens barrel；

Location structure, first lens and the second lens is positioned, it is included：

The lug boss in first non-optical effective portion is arranged on, the lug boss includes extending from the first side wall towards optical axis direction The first continuing surface, from the first continuing surface towards the second lens direction tilt extension the first inclined-plane, along the first inclined-plane direction Second continuing surface of optical axis direction extension, it is oblique that the direction for being directed away from the second lens along the second continuing surface tilts second extended Face, the 3rd continuing surface of extension is bent along the second inclined-plane towards the direction of optical axis；

Be arranged in second non-optical effective portion includes from institute with the depressed part on the lug boss correspondence position, the depressed part The first joint face that second sidewall extends to optical axis direction is stated, the direction for being directed away from the first lens along the first joint face, which is tilted, prolongs The 3rd inclined-plane stretched, the second joint face extended along the 3rd inclined-plane towards the direction of optical axis is saturating along the second joint face towards first First cambered surface of the direction bending extension of mirror, the 3rd joint face of extension is bent along the first cambered surface towards optical axis direction；

The lug boss is at least partially inserted into the depressed part, and second inclined-plane offsets with first cambered surface.

2. imaging lens according to claim 1, it is characterised in that：

First continuing surface offsets with first joint face, and first inclined-plane offsets with the 3rd inclined-plane, institute State the second continuing surface to be separated with second joint face, the 3rd continuing surface is separated with the 3rd joint face.

3. imaging lens according to claim 2, it is characterised in that：Second continuing surface and the second joint face phase Parallel, the 3rd continuing surface is parallel with the 3rd joint face.

4. imaging lens according to claim 1, it is characterised in that：

Second continuing surface offsets with second joint face, and first inclined-plane offsets with the 3rd inclined-plane, institute State the first continuing surface to be separated with first joint face, the 3rd continuing surface is separated with the 3rd joint face.

5. imaging lens according to claim 4, it is characterised in that：First continuing surface and the first joint face phase Parallel, the 3rd continuing surface is parallel with the 3rd joint face.