CN209961997U

CN209961997U - Super wide-angle lens and mobile device

Info

Publication number: CN209961997U
Application number: CN201921110223.8U
Authority: CN
Inventors: 周中诚
Original assignee: Huizhou Hongxin Photoelectric Technology Co Ltd
Current assignee: Huizhou Hongxin Photoelectric Technology Co Ltd
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-01-17
Anticipated expiration: 2029-07-15

Abstract

A super wide-angle lens and a mobile device, the super wide-angle lens comprising: the first lens, the second lens, the third lens, the fourth lens and the fifth lens are arranged in sequence from the light inlet side to the imaging side; the radius of curvature of the light inlet side of the first lens is 83.76mm, and the radius of curvature of the mirror surface on the imaging side of the first lens is 40.33 mm; the curvature radius of the lens surface of the light inlet side of the second lens is 465mm, and the curvature radius of the imaging side of the second lens is 21.3 mm; the radius of curvature of the light inlet side of the third lens is 21.3mm, and the radius of curvature of the imaging side of the third lens is 33.97 mm; the radius of curvature of the light inlet side of the fourth lens is 63.43mm, and the radius of curvature of the imaging side of the fourth lens is infinite; the curvature radius of the light inlet side of the fifth lens is 15.78mm, and the curvature radius of the imaging side of the fifth lens is infinite; the lens is fixed by a first fixing piece, a second fixing piece, a third fixing piece and a fourth fixing piece; the fixing pieces are provided with threads.

Description

Super wide-angle lens and mobile device

Technical Field

The utility model relates to a camera lens technical field particularly, relates to a super wide angle camera lens and mobile device.

Background

Regardless of daily life or travel, the mobile phone has gradually replaced the camera, and becomes the first choice tool for people to take pictures. Therefore, people also put higher demands on the photographing of mobile phones. At present, most of lenses carried by mobile phones have small visual angle and limited scene accommodating capacity, and when the mobile phones face large scenes such as broad scenery, wide buildings, furnishings, meetings and the like, the scenes seen by human eyes at the same viewpoint can not be completely shot. Even if the mobile phone is partially equipped with the wide-angle lens, the shooting image quality (especially the picture edge) is generally poor, and the visual angle of the wide-angle lens cannot be made larger due to the structural limitation of the mobile phone, so that the shooting requirement of a user on a large scene is difficult to meet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a super wide-angle lens can take out wider picture and better image quality. The embodiment of the utility model is realized like this:

the utility model discloses an aspect provides a super wide angle camera lens, include: the first lens, the second lens, the third lens, the fourth lens and the fifth lens are arranged in sequence from the light inlet side to the imaging side; the radius of curvature of the light inlet side of the first lens is 83.76mm, and the radius of curvature of the mirror surface on the imaging side of the first lens is 40.33 mm; the curvature radius of the lens surface of the light inlet side of the second lens is 465mm, and the curvature radius of the imaging side of the second lens is 21.3 mm; the radius of curvature of the light inlet side of the third lens is 21.3mm, and the radius of curvature of the imaging side of the third lens is 33.97 mm; the radius of curvature of the light inlet side of the fourth lens is 63.43mm, and the radius of curvature of the imaging side of the fourth lens is infinite; the curvature radius of the light inlet side of the fifth lens is 15.78mm, and the curvature radius of the imaging side of the fifth lens is infinite; the lens is fixed by a first fixing piece, a second fixing piece, a third fixing piece and a fourth fixing piece; the fixing pieces are provided with threads.

Optionally, the distance between the center of the imaging side surface of the first lens and the center of the light entering side surface of the second lens on the optical axis is 3.59 mm; the distance between the center of the imaging side surface of the second lens and the center of the light entering side surface of the third lens on the optical axis is 0; the distance between the center of the imaging side surface of the third lens and the center of the light entering side surface of the fourth lens on the optical axis is 2.77 mm; the distance between the center of the imaging side surface of the fourth lens and the center of the light entering side surface of the fifth lens on the optical axis is 0.68 mm.

Optionally, the first lens and the third lens are meniscus lenses convex to the light inlet side; the second lens is a double-concave lens; the fourth lens is a single concave lens concave to the imaging side; the fifth lens is a single convex lens protruding to the gold light side.

Optionally, the first lens has a center thickness of 2.7 mm; the central thickness of the second lens is 1.3 mm; the center thickness of the third lens is 3.6 mm; the center thickness of the fourth lens is 3.2 mm; the center thickness of the fifth lens is 3.1 mm.

Optionally, the refractive index of the first lens is 1.516797, the refractive index of the second lens is 1.755002, the refractive index of the third lens is 1.755205, the refractive index of the fourth lens is 1.548141, and the refractive index of the fifth lens is 1.516797.

Optionally, the first lens has an abbe number of 64.212351, the second lens has an abbe number of 52.329298, the third lens has an abbe number of 27.547441, the fourth lens has an abbe number of 45.832966, and the fifth lens has an abbe number of 64.212351.

Optionally, the first lens, the second lens, the third lens, the fourth lens, and the fifth lens are all glass lenses.

The utility model discloses another aspect of the embodiment provides a mobile device, include: a built-in lens and the super wide-angle lens of any one of the above.

The utility model discloses beneficial effect includes:

the embodiment of the utility model provides a pair of super wide-angle lens, through first lens, second lens, third lens, fourth lens and the fifth lens that sets gradually for external camera lens's angle of vision is great, and the content of the photo of shooting is abundanter, the image quality is more clear, and the distortion is less in addition, and the effect of shooing is truer.

The embodiment of the utility model provides a mobile device adopts above-mentioned super wide-angle lens, can obtain bigger angle of vision, and the content of the photo of shooting is abundanter, the image quality is more clear.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is an exploded view of a super wide-angle lens according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a super wide-angle lens according to an embodiment of the present invention.

Icon: 10-super wide-angle lens; 1-a first lens; 2-a second lens; 3-a third lens; 4-a fourth lens; 5-a fifth lens; 101-a first fixture; 102-a second fixture; 103-a third fixing piece; 104-a fourth mount; a 1-field of view; a 2-exit angle.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, an aspect of an embodiment of the present invention provides a super wide-angle lens 10, including: the lens comprises a first lens 1, a second lens 2, a third lens 3, a fourth lens 4 and a fifth lens 5 which are arranged in sequence from the light inlet side to the imaging side; the curvature radius of the light inlet side of the first lens 1 is 83.76mm, and the curvature radius of the lens surface on the imaging side of the first lens 1 is 40.33 mm; the curvature radius of the lens surface of the light inlet side of the second lens 2 is 465mm, and the curvature radius of the imaging side of the second lens 2 is 21.3 mm; the radius of curvature of the light inlet side of the third lens 3 is 21.3mm, and the radius of curvature of the image forming side of the third lens 3 is 33.97 mm; the radius of curvature of the light entering side of the fourth lens 4 is 63.43mm, and the radius of curvature of the imaging side of the fourth lens 4 is infinite; the curvature radius of the light inlet side of the fifth lens 5 is 15.78mm, and the curvature radius of the imaging side of the fifth lens 5 is infinite; the lenses 1-5 are fixed by a first fixing member 101, a second fixing member 102, a third fixing member 103 and a fourth fixing member 104; the first fixing piece 101 is a fixing ring cover, and a connecting thread is arranged on the inner side of the fixing ring cover; the second fixing member 102 is a limiting member, and the limiting member is provided with a convex connecting thread portion along the imaging side direction; the third fixing piece 103 is a spacer ring, and the spacer ring is provided with connecting threads; the fourth fixing member 104 is a connection bayonet, and a connection thread is provided on the connection bayonet.

It should be noted that the material of the

fixing members

101 and 104 may be metal. The fixing piece can better protect the super wide-angle lens 10, and the situation that the first lens 1, the second lens 2, the third lens 3, the fourth lens and the fifth lens 5 are damaged when the super wide-angle lens 10 bears external impact in use is reduced.

The embodiment of the utility model provides a super wide-angle lens 10 through first lens 1, second lens 2, third lens 3, fourth lens 4 and the fifth lens 5 that sets gradually for super wide-angle lens 10's angle of vision a1 is great, and the content of the photo of shooting is abundanter, the image quality is more clear, and the distortion is less in addition, and the effect of shooing is truer.

Alternatively, referring to fig. 2, the left side of fig. 2 is the light-entering side, and the right side of fig. 2 is the imaging side; the distance between the center of the imaging side surface of the first lens 1 and the center of the light entering side surface of the second lens 2 on the optical axis is 3.59 mm; the distance between the center of the imaging side surface of the second lens 2 and the center of the light entering side surface of the third lens 3 on the optical axis is 0; the distance between the center of the imaging side surface of the third lens 3 and the center of the light entering side surface of the fourth lens 4 on the optical axis is 2.77 mm; the distance between the center of the imaging side surface of the fourth lens 4 and the center of the light entering side surface of the fifth lens 5 on the optical axis is 0.68 mm.

It should be noted that, because the two opposite mirror surfaces of the second lens 2 and the third lens 3 are in contact, the two lenses can be connected together by gluing to form a combined lens during actual manufacturing.

Optionally, referring to fig. 1, the first lens 1 and the third lens 3 are meniscus lenses protruding to the light inlet side; the second lens 2 is a double-concave lens; the fourth lens 4 is a single concave lens concave to the imaging side; the fifth lens 5 is a single convex lens convex to the gold light side.

It should be noted that the meniscus lens refers to a lens in which two opposite arc-shaped mirror surfaces are oriented in the same direction, and illustratively, both arc-shaped mirror surfaces of the first mirror 1 and the third mirror 3 are convex toward the light entrance side.

Optionally, the first lens 1 has a center thickness of 2.7 mm; the center thickness of the second lens 2 is 1.3 mm; the center thickness of the third lens 3 is 3.6 mm; the center thickness of the fourth lens 4 is 3.2 mm; the fifth lens 5 has a central thickness of 3.1 mm.

Optionally, the refractive index of the first lens 1 is 1.516797, the refractive index of the second lens 2 is 1.755002, the refractive index of the third lens 3 is 1.755205, the refractive index of the fourth lens 4 is 1.548141, and the refractive index of the fifth lens 5 is 1.516797.

The refractive index reflects the refractive power of the lens with respect to light, and the numerical value thereof is slightly different depending on the measurement reference wavelength and the environment. Under the same precondition, the higher the refractive index of the lens is, the thinner and lighter the lens is. However, the higher the refractive index of the lens, the better, and generally, the higher the refractive index of the lens, the lower the Abbe number, and the more significant the dispersion.

Optionally, the abbe number of the first lens 1 is 64.212351, the abbe number of the second lens 2 is 52.329298, the abbe number of the third lens 3 is 27.547441, the abbe number of the fourth lens 4 is 45.832966, and the abbe number of the fifth lens 5 is 64.212351.

It should be noted that the abbe number is an important index for measuring the imaging quality of the lens, and is usually expressed by abbe number. Generally, the larger the dispersion coefficient (abbe number), the less obvious the dispersion, and the better the imaging quality of the lens; the smaller the dispersion coefficient (abbe number), the more pronounced the dispersion and the poorer the imaging quality of the lens.

Optionally, the first lens 1, the second lens 2, the third lens 3, the fourth lens 4 and the fifth lens 5 are all glass lenses.

Glass has advantages such as sense of permeability is good, therefore glass lens has the better advantage of formation of image effect.

Specifically, the radii of curvature of the respective lenses and other parameters of the super wide-angle lens 10 may be set to the parameters listed in table 1.

Table 1 exemplary parameter table for super wide-angle lens 10

By adopting the above parameters, the super wide-angle lens 10 of the present embodiment has a viewing angle a1 of 206 °, a maximum exit angle a2 of 108 °, a center 350lp/mm, and a 0.7 viewing angle of 300lp/mm, and can meet the shooting requirements of users for large scenes.

The utility model discloses another aspect of the embodiment provides a mobile device, include: a built-in lens and the super wide-angle lens 10 of any of the above. The present mobile device has the same structure and advantageous effects as the super wide-angle lens 10 in the foregoing embodiment. Since the structure and advantageous effects of the super wide-angle lens 10 have been described in detail in the foregoing embodiments, no further description is provided herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A super wide-angle lens, comprising: the first lens, the second lens, the third lens, the fourth lens and the fifth lens are arranged in sequence from the light inlet side to the imaging side; the radius of curvature of the light inlet side of the first lens is 83.76mm, and the radius of curvature of the mirror surface on the imaging side of the first lens is 40.33 mm; the curvature radius of the lens surface of the light inlet side of the second lens is 465mm, and the curvature radius of the imaging side of the second lens is 21.3 mm; the radius of curvature of the light inlet side of the third lens is 21.3mm, and the radius of curvature of the imaging side of the third lens is 33.97 mm; the radius of curvature of the light inlet side of the fourth lens is 63.43mm, and the radius of curvature of the imaging side of the fourth lens is infinite; the curvature radius of the light inlet side of the fifth lens is 15.78mm, and the curvature radius of the imaging side of the fifth lens is infinite; the lens is fixed by a first fixing piece, a second fixing piece, a third fixing piece and a fourth fixing piece; the fixing pieces are provided with threads.

2. The super wide-angle lens of claim 1, wherein the distance on the optical axis between the center of the imaging side surface of the first lens and the center of the light entering side surface of the second lens is 3.59 mm; the distance between the center of the imaging side surface of the second lens and the center of the light entering side surface of the third lens on the optical axis is 0; the distance between the center of the imaging side surface of the third lens and the center of the light entering side surface of the fourth lens on the optical axis is 2.77 mm; the distance between the center of the imaging side surface of the fourth lens and the center of the light entering side surface of the fifth lens on the optical axis is 0.68 mm.

3. The super wide-angle lens of claim 1, wherein the first and third mirrors are meniscus lenses convex to the light entry side; the second lens is a double-concave lens; the fourth lens is a single concave lens concave to the imaging side; the fifth lens is a single convex lens protruding to the gold light side.

4. The super wide-angle lens of claim 1, wherein the first lens has a center thickness of 2.7 mm; the central thickness of the second lens is 1.3 mm; the center thickness of the third lens is 3.6 mm; the center thickness of the fourth lens is 3.2 mm; the center thickness of the fifth lens is 3.1 mm.

5. The super wide-angle lens of claim 1, wherein the first lens element has a refractive index of 1.516797, the second lens element has a refractive index of 1.755002, the third lens element has a refractive index of 1.755205, the fourth lens element has a refractive index of 1.548141, and the fifth lens element has a refractive index of 1.516797.

6. The super wide-angle lens of claim 1, wherein the first lens element has an abbe number of 64.212351, the second lens element has an abbe number of 52.329298, the third lens element has an abbe number of 27.547441, the fourth lens element has an abbe number of 45.832966, and the fifth lens element has an abbe number of 64.212351.

7. The super wide-angle lens of claim 1, wherein the first, second, third, fourth, and fifth lenses are glass lenses.

8. A mobile device comprising an internal lens and the super wide-angle lens according to any one of claims 1 to 7.