CN216622802U

CN216622802U - Imaging device and electronic device

Info

Publication number: CN216622802U
Application number: CN202123147095.4U
Authority: CN
Inventors: 窦万里; 励维芳; 金银芳; 戴付建; 赵烈烽
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-05-27
Anticipated expiration: 2031-12-15

Abstract

The application discloses imaging device includes: a lens barrel disposed in the lens group, the lens barrel including, in order from an object side to an image side: the first boss, the second boss and the base; the first boss is connected with the second boss; the second boss is connected with the base; the taper of the first boss is smaller than that of the second boss. The application also provides an electronic device. By the technical scheme, the whole body of the convex platform-shaped part of the lens cone is smooth and complete, so that the assembling efficiency of the whole machine is facilitated; on the other hand, the injection molding and demolding of the lens barrel are facilitated. The first boss, i.e., the head, has a smaller size than the other portions, which is in line with the current demand for small-head imaging devices. Meanwhile, the pressing ring is arranged to limit the lens barrel and the lens and simultaneously be used for enhancing the overall strength of the lens. The color filter can play a role in intercepting non-infrared light, and meanwhile, the lens is enhanced to be used for receiving infrared light.

Description

Imaging device and electronic device

Technical Field

The application belongs to the field of imaging lenses, and particularly relates to an imaging device and an electronic device.

Background

With the continuous development of scientific technology, more and more intelligent homes, portable intelligent terminals or vehicle-mounted intelligence with the image information acquisition function are widely applied to daily life and work of people, bring huge convenience to the daily life and work of people, and become an indispensable important tool for people at present. In all intelligent terminal products, the imaging lens is an indispensable important component, and can capture external images, combine with an internal processor and the like for processing, and display optical image information for users. With the development of the smart home, the portable smart terminal or the vehicle-mounted smart terminal technology, in order to enable the smart home, the portable smart terminal or the vehicle-mounted smart terminal to have more functions, a large number of various components need to be integrated, so that the smart home, the portable smart terminal or the vehicle-mounted smart terminal can be utilized to the maximum extent in the design process of the smart home, the portable smart terminal or the vehicle-mounted smart terminal; on the other hand, the demand for each component is becoming more and more miniaturized. The requirements of terminal manufacturers on imaging lenses at present are as follows: under the condition of providing high-quality imaging effect as far as possible, the size of the lens is reduced, and the influence of the lens on more and more compact terminal equipment is avoided.

This product is used for mobile terminal, except will satisfying optical demand, still need to have stable structure to satisfy service environment's intensity demand, and the head is less satisfies the requirement of market to the imaging device miniaturization.

The foregoing description is provided for general background information and is not admitted to be prior art

Disclosure of Invention

The present application aims to provide an imaging device and an electronic device, which aim to solve the above problems, so that in addition to satisfying the optical requirements, a stable structure is required to satisfy the strength requirements of the use environment, and the head is small to satisfy the requirements of the market on the miniaturization of the imaging device.

The application provides an imaging apparatus, including: a lens barrel (1), a lens group (2) disposed within the lens barrel (1), the lens barrel (1) comprising, in order from an object side to an image side: a first boss (11), a second boss (12) and a base (13);

the first boss (11) is connected with the second boss (12);

the second boss (12) is connected with the base (13);

the taper of the first boss (11) is smaller than that of the second boss (12).

According to one embodiment of the application, the lens group (2) comprises at least 2 lenses, wherein the adjacent lenses have an air gap therebetween;

a pressing ring (3) is arranged between the lens close to the image side end and the lens cone (1) and used for limiting the lens group (2) and the lens cone (1);

one side of the pressing ring (3) close to the image side end is provided with a bearing surface (4);

the bearing surface (4) is provided with a color filter (5).

According to one embodiment of the application, a color filter dispensing groove (31) and a color filter overflowing groove are formed in the pressing ring (3)

(32)；

The color filter dispensing groove (31) is positioned at the periphery of the color filter (5);

the color filter glue overflow groove (32) is positioned on one side of the color filter (5) close to the optical axis in the lateral direction of the object.

According to one embodiment of the application, a pressing ring glue dispensing groove (131) is formed at the joint of the inner wall of the base (13) and the pressing ring (3).

According to one embodiment of the present application, an opening of the ring bead (131) is gradually increased from an object side to an image side;

wherein the inclined surface (1311) of the inner wall of the base (13) connected with the pressing ring dispensing groove (131) and the inclined surface (33) of the outer wall of the pressing ring (3) have inclined surfaces with opposite angles.

According to one embodiment of the application, a notch (34) is formed in one side of the pressing ring (3) located in the pressing ring glue dispensing groove (131).

According to one embodiment of the present application, the distances between the inner wall of the lens barrel (1) and the bearing surfaces (6) of the lenses of the lens group (2) and the optical axis become larger in order from the object side to the image side.

According to one embodiment of the application, the maximum diameter Φ Q and the maximum entrance aperture Φ P of the object-side end of the first boss (11) satisfy: 1.5< Φ Q/Φ P < 2.5.

According to one embodiment of the application, the maximum diameter Φ T of the image-side end of the first boss (11) and the maximum diameter Φ R of the image-side end of the second boss (12) satisfy: 1.1< Φ T/Φ R < 1.7.

According to one embodiment of the application, the maximum diameter Φ D2 of the pressing ring (3) and the maximum diameter Φ D1 of the optical filter satisfy: 1.1< Φ D2/Φ D1< 1.2.

According to one embodiment of the application, the maximum diameter Φ D1 of the filter and the maximum diameter Φ D3 of the inner wall of the lens barrel (1) satisfy: 1.1< Φ D3/Φ D1< 1.5.

According to one embodiment of the application, the maximum radial distance Ψ X of the notch (34) and the maximum radial distance Ψ Y of the color filter dispensing slot (31) satisfy: 1.2< Ψ X/Ψ Y < 2.4.

According to one embodiment of the application, the maximum radial distance psi Y of the color filter glue dispensing groove (31) and the maximum axial distance psi Z of the color filter glue overflow groove (32) meet the following conditions: 0.6< Ψ Y/Ψ Z < 1.9.

The present application further provides an electronic device, including: the imaging device as described above, and at least one electronic photosensitive element; wherein the electronic photosensitive element is disposed on an image side of the imaging device.

The beneficial effect of this application:

according to the imaging device and the electronic device, the boss-shaped part of the lens cone (1) is smooth and complete, so that the assembling efficiency of the whole device is facilitated; on the other hand, the injection molding and the demoulding of the lens barrel (1) are facilitated. The first boss (11), i.e., the head, has a smaller size than the other portions, meeting the current demand for small-head imaging devices. Meanwhile, the pressing ring (3) is arranged to limit the lens barrel (1) and the lens group (2) and enhance the overall strength of the lens. The color filter (5) can be arranged to play a role in intercepting non-infrared light, and meanwhile, the lens is enhanced to be used for receiving infrared light.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an imaging device provided in an embodiment of the present application;

fig. 2 is a sectional view of an image forming apparatus provided in an embodiment of the present application;

FIG. 3 is an enlarged cross-sectional view of a clamping ring portion provided in accordance with an embodiment of the present application;

FIG. 4 is an enlarged cross-sectional view of a clamping ring portion provided in accordance with an embodiment of the present application;

fig. 5 is a sectional view of an image forming apparatus provided in an embodiment of the present application;

fig. 6 is a sectional view of an image forming apparatus provided in an embodiment of the present application;

fig. 7 is a sectional view of an image forming apparatus provided in an embodiment of the present application.

Description of reference numerals:

1 is a lens cone;

11 is a first boss;

12 is a second boss;

13 is a base (13);

131 is a ring pressing and glue dispensing groove;

1311 is an inclined surface of the inner wall of the base (13)

2 is a lens group;

3 is a pressing ring;

31 is a color filter dispensing groove;

32 is a color filter glue overflow groove;

33 is an inclined surface of the outer wall of the pressing ring;

34 is a notch;

4 is a bearing surface;

5 is a color filter;

6 is a bearing surface;

and 7 is a space ring.

Detailed Description

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, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that in this specification, the expressions first, second, third, etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Thus, the first lens discussed below may also be referred to as the second lens or the third lens without departing from the teachings of the present invention.

It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.

In the drawings, the thickness, size, and shape of the lens have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and not drawn to scale.

In the description of the present invention, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region. If the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. Features, principles and other aspects of the present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Exemplary embodiments

Fig. 1 is a schematic structural diagram of an imaging apparatus according to an embodiment of the present application. An exemplary imaging apparatus of the present application includes: a lens barrel (1), a lens group (2) disposed within the lens barrel (1), the lens barrel (1) comprising, in order from an object side to an image side: a first boss (11), a second boss (12) and a base (13); the first boss (11) is connected with the second boss (12); the second boss (12) is connected with the base (13); the taper of the first boss (11) is greater than the taper of the second boss (12).

In the exemplary embodiment of the present application, a lens barrel (1) of an imaging device has an optical axis, and includes, in order from an object side to an image side with reference to the optical axis, a first boss (11), a second boss (12), and a base (13); wherein the first boss (11) is engaged with the second boss (12); the second boss (12) is connected with the base (13); the taper of the first boss (11) is smaller than that of the second boss (12). The scheme of the embodiment of the application is beneficial to injection molding and demolding of the lens barrel. The convex part of the lens cone is smooth and complete, which is beneficial to the assembly efficiency of the whole machine. The first boss, i.e., the head, has a smaller size than the other portions, which is in line with the current demand for small-head imaging devices.

As shown in fig. 2, a cross-sectional view of an image forming apparatus provided in an embodiment of the present application is provided. In the exemplary embodiment of the application, the lens group (2) in the lens barrel (1) at least comprises more than 2 lenses, an air gap is arranged between adjacent lenses, and a pressing ring (3) is arranged between the lens close to the image side end and the lens barrel (1) and used for limiting the lens group (2) and the lens barrel (1); one side of the pressing ring (3) close to the image side end is provided with a bearing surface (4); the bearing surface (4) is provided with a color filter (5). In the embodiment, the pressing ring (3) is arranged to limit the lens barrel (1) and the lens group (2) and enhance the overall strength of the lens. The color filter (5) can be arranged to play a role in intercepting non-infrared light, and meanwhile, the lens is enhanced to be used for receiving infrared light.

Fig. 3 is an enlarged cross-sectional view of the position of the pressing ring provided in the embodiment of the present application. In the exemplary embodiment of the application, a color filter dispensing groove (31) and a color filter overflowing groove (32) are arranged on the pressing ring (3); the color filter dispensing groove (31) is positioned at the periphery of the color filter (5); the color filter glue overflow groove (32) is positioned on one side of the color filter (5) in the object side direction and close to the optical axis. Do benefit to glue and adhere to on color filter (5) lateral wall through set up some gluey grooves on clamping ring (3), overflow gluey groove and prevent that glue from overflowing to the lens on.

In the exemplary embodiment of the application, a ring dispensing groove (131) is arranged at the joint of the inner wall of the base (13) and the pressing ring (3), and the positions of the pressing ring (3) and the base (13) are fixed by dispensing at the position.

In the exemplary embodiment of the present application, the opening of the clamping ring dispensing groove (131) gradually increases from the object side to the image side; wherein, the inclined surface (1311) of the inner wall of the base (13) connected with the pressing ring dispensing groove (131) and the inclined surface (33) of the outer wall of the pressing ring (3) have opposite inclined angles. The inclined plane (1311) of the inner wall of the base (13) and the inclined plane (33) of the outer wall of the pressing ring (3) are provided with opposite inclined angles, so that the contact area of glue with the base (13) and the pressing ring (3) can be increased, and the bonding strength is enhanced.

In the exemplary embodiment of the application, a notch (34) is arranged on one side of the pressing ring (3) positioned in the pressing ring glue dispensing groove (131). Through setting up the tension characteristic that breach (34) can effectively utilize liquid glue, the breach position can be climbed fully automatically to glue, and the back solidifies, glue forms a little that faces the optical axis and colludes the form portion in breach (34) position to adhesive strength has been improved.

In the exemplary embodiment of the application, the distances from the optical axis to the bearing surfaces (6) of the inner walls of the lens barrel (1) and the lens groups (2) are sequentially increased from the object side to the image side. The lens assembling process can be ensured to be smooth by arranging the bearing surface, and the demolding is easy to realize.

In the exemplary embodiment of the present application, the maximum diameter Φ Q and the maximum entrance aperture Φ P of the object-side end of the first boss (11) satisfy: 1.5< Φ Q/Φ P < 2.5. By adjusting the proportional relation between phi Q and phi P, the bearing stability of the first lens can be ensured, and the stability of all subsequent lenses is facilitated. More specifically, the maximum diameter Φ Q and the maximum entrance aperture Φ P of the object-side end of the first boss (11) satisfy: 1.51< Φ Q/Φ P < 2.49.

In the exemplary embodiment of the present application, the maximum diameter Φ T of the image-side end of the first boss (11) and the maximum diameter Φ R of the image-side end of the second boss (12) satisfy: 1.1< Φ T/Φ R < 1.7. By adjusting the proportional relation between phi T and phi R within the range of numerical conditions, the lens barrel demoulding and the lens bearing stability are facilitated. More specifically, the maximum diameter Φ T of the image-side end of the first boss (11) and the maximum diameter Φ R of the image-side end of the second boss (12) satisfy: 1.11< Φ T/Φ R < 1.69.

In the exemplary embodiment of the present application, the maximum diameter Φ D2 of the pressing ring (3) and the maximum diameter Φ D1 of the optical filter (5) satisfy: 1.1< Φ D2/Φ D1< 1.2. By adjusting the proportional relation between phi D2 and phi D1 within the numerical condition, the color filter (5) and the pressing ring (3) are left with enough space for dispensing, and the attaching strength of the color filter is ensured. More specifically, the maximum diameter Φ D2 of the pressing ring (3) and the maximum diameter Φ D1 of the optical filter (5) satisfy: 1.11< Φ D2/Φ D1< 1.19.

In the exemplary embodiment of the present application, the maximum diameter Φ D1 of the optical filter (5) and the maximum diameter Φ D3 of the inner wall of the lens barrel (1) satisfy: 1.1< Φ D3/Φ D1< 1.5. By adjusting the proportional relation between Φ D3 and Φ D1 within the range of the numerical conditions, the color filter can be ensured to filter all light emitted from the object plane. More specifically, the maximum diameter Φ D1 of the optical filter (5) and the maximum diameter Φ D3 of the inner wall of the lens barrel (1) satisfy: 1.11< Φ D3/Φ D1< 1.49.

In the exemplary embodiment of the present application, a maximum radial distance Ψ X of the notch (34) and a maximum radial distance Ψ Y of the color filter dispensing slot (31) satisfy: 1.2< Ψ X/Ψ Y < 2.4. By adjusting the proportional relation between psi X and psi Y within the numerical condition range, the rubber head can be ensured to extend into the rubber head when the color filter and the pressing ring are dispensed. More specifically, the maximum radial distance Ψ X of the notch (34) and the maximum radial distance Ψ Y of the color filter dispensing slot (31) satisfy: 1.21< Ψ X/Ψ Y < 2.39.

In the exemplary embodiment of the present application, a maximum radial distance Ψ Y of the color filter dispensing groove (31) and a maximum axial distance Ψ Z of the color filter overflow groove (32) satisfy: 0.6< Ψ Y/Ψ Z < 1.9. By adjusting the proportional relation between psi Y and psi Z, the glue can be extruded to be attached to the side wall of the color filter and not overflow to the lens when the color filter is pressed down within the numerical condition range. More specifically, the maximum radial distance psi Y of the color filter glue dispensing groove (31) and the maximum axial distance psi Z of the color filter glue overflow groove (32) meet the following conditions: 0.61< Ψ Y/Ψ Z < 1.89.

The technical solution of the present invention is described in detail below with reference to the accompanying drawings.

Detailed description of the preferred embodiment 1

Referring to fig. 1, 2 and 3, the imaging device of the present application includes: a lens barrel (1), a lens group (2) disposed within the lens barrel (1), the lens barrel (1) comprising, in order from an object side to an image side: a first boss (11), a second boss (12) and a base (13); the first boss (11) is connected with the second boss (12); the second boss (12) is connected with the base (13); the taper of the first boss (11) is smaller than that of the second boss (12).

The lens barrel (1) of the imaging device is provided with an optical axis and sequentially comprises a first boss (11), a second boss (12) and a base (13) from the object side to the image side by taking the optical axis as a reference; wherein the first boss (11) is engaged with the second boss (12); the second boss (12) is connected with the base (13); the taper of the first boss (11) is smaller than that of the second boss (12).

The lens group (2) in the lens cone (1) at least comprises more than 2 lenses, an air gap is arranged between the adjacent lenses, and a pressing ring (3) is arranged between the lens close to the image side end and the lens cone (1) and used for limiting the lens group (2) and the lens cone (1); one side of the pressing ring (3) close to the image side end is provided with a bearing surface (4); the bearing surface (4) is provided with a color filter (5).

A color filter glue dispensing groove (31) and a color filter glue overflowing groove (32) are arranged on the pressing ring (3); the color filter dispensing groove (31) is positioned at the periphery of the color filter (5); the color filter glue overflow groove (32) is positioned on one side of the color filter (5) in the object side direction and close to the optical axis.

A ring pressing and glue dispensing groove (131) is arranged at the joint of the inner wall of the base (13) and the pressing ring (3).

The opening of the pressing ring glue dispensing groove (131) is gradually enlarged from the object side to the image side; wherein, the inclined surface (1311) of the inner wall of the base (13) connected with the pressing ring dispensing groove (131) and the inclined surface (33) of the outer wall of the pressing ring (3) have opposite inclined angles.

A gap (34) is arranged on one side of the pressing ring (3) positioned in the pressing ring glue dispensing groove (131).

The distances between the bearing surfaces (6) of the inner walls of the lens barrels (1) and the lenses of the lens groups (2) and the optical axis are increased in sequence from the object side to the image side.

As shown in fig. 4, a cross-sectional view of an image forming apparatus provided in an embodiment of the present application is shown.

In the embodiment of the application, the maximum diameter phi Q of the object-side end of the first boss (11) is 4.93, the maximum incidence aperture phi P is 2.31, and phi Q/phi P is 2.13, so that the design specification of 1.5< phi Q/phi P <2.5 is met.

The maximum diameter phi T of the image-side end of the first boss (11) is 7.29, the maximum diameter phi R of the image-side end of the second boss (12) is 5.42, phi T/phi R is 1.35, and the design specification that 1.1< phi T/phi R <1.7 is met.

The maximum diameter phi D2 of clamping ring (3) is 6.15, the maximum diameter phi D1 of optical filter (5) is 5.26, and phi D2/phi D1 is 1.17, and satisfies the following conditions: 1.1< Φ D2/Φ D1< 1.2.

The maximum diameter Φ D1 of the optical filter (5) is 5.26, the maximum diameter Φ D3 of the inner wall of the lens barrel (1) is 6.83, and Φ D3/Φ D1 is 1.30, and the following requirements are satisfied: 1.1< Φ D3/Φ D1< 1.5.

The maximum radial distance psi X of the gap (34) is 0.53, the maximum radial distance psi Y of the color filter dispensing groove (31) is 0.38, and psi X/psi Y is 1.39, and the following conditions are satisfied: 1.2< Ψ X/Ψ Y <2.4 design specification.

The maximum radial distance psi Y of the color filter glue dispensing groove (31) is 0.38, the maximum axial distance psi Z of the color filter glue overflow groove (32) is 0.26, psi Y/psi Z is 1.46, and the following requirements are met: a design specification of 0.6< Ψ Y/Ψ Z < 1.9.

The convex part of the lens cone is smooth and complete, which is beneficial to the assembly efficiency of the whole machine and the injection molding and demoulding of the lens cone. The first plateau shape, i.e., the head portion, has a smaller size than the other portions, which is in line with the current demand for small-head imaging devices.

Specific example 2

As shown in fig. 5, a cross-sectional view of an image forming apparatus provided in an embodiment of the present application is shown.

In the embodiment of the application, the maximum diameter phi Q of the object-side end of the first boss (11) is 4.78, the maximum incidence aperture phi P is 2.46, and phi Q/phi P is 1.94, which meets the design specification of 1.5< phi Q/phi P < 2.5.

The maximum diameter phi T of the image-side end of the first boss (11) is 7.76, the maximum diameter phi R of the image-side end of the second boss (12) is 4.99, phi T/phi R is 1.56, and the design specification that 1.1< phi T/phi R <1.7 is met.

The maximum diameter phi D2 of the clamping ring (3) is 5.94, the maximum diameter phi D1 of the optical filter (5) is 5.11, and phi D2/phi D1 is 1.16, and the following requirements are met: 1.1< Φ D2/Φ D1< 1.2.

The maximum diameter phi D1 of the optical filter (5) is 5.11, the maximum diameter phi D3 of the inner wall of the lens barrel (1) is 6.54, and phi D3/phi D1 is 1.28, and the following requirements are met: 1.1< Φ D3/Φ D1< 1.5.

The maximum radial distance psi X of the notch (34) is 0.46, the maximum radial distance psi Y of the color filter dispensing groove (31) is 0.31, psi X/psi Y is 1.48, and the following conditions are satisfied: 1.2< Ψ X/Ψ Y <2.4 design specification.

The maximum radial distance psi Y of the color filter glue dispensing groove (31) is 0.31, the maximum axial distance psi Z of the color filter glue overflow groove (32) is 0.18, psi Y/psi Z is 1.72, and the following requirements are met: a design specification of 0.6< Ψ Y/Ψ Z < 1.9.

The convex part of the lens cone is smooth and complete, which is beneficial to the assembly efficiency of the whole machine and the injection molding and demoulding of the lens cone. The first boss shape, i.e., the head portion, has a smaller size than the other portions, and meets the current demand for small-head imaging devices.

Specific example 3

As shown in fig. 6, a cross-sectional view of an image forming apparatus provided in an embodiment of the present application is shown.

In the embodiment of the application, the maximum diameter phi Q of the object-side end of the first boss (11) is 4.43, the maximum incidence aperture phi P is 2.43, and phi Q/phi P is 1.82, which meets the design specification of 1.5< phi Q/phi P < 2.5.

The maximum diameter phi T of the image-side end of the first boss (11) is 6.88, the maximum diameter phi R of the image-side end of the second boss (12) is 5.21, phi T/phi R is 1.32, and the design specification that 1.1< phi T/phi R <1.7 is met.

The maximum diameter phi D2 of the clamping ring (3) is 6.66, the maximum diameter phi D1 of the optical filter (5) is 5.89, and phi D2/phi D1 is 1.13, and the following requirements are met: 1.1< Φ D2/Φ D1< 1.2.

The maximum diameter phi D1 of the optical filter (5) is 5.89, the maximum diameter phi D3 of the inner wall of the lens barrel (1) is 7.36, and phi D3/phi D1 is 1.25, and the following requirements are met: 1.1< Φ D3/Φ D1< 1.5.

The maximum radial distance psi X of the notch (34) is 0.53, the maximum radial distance psi Y of the color filter dispensing groove (31) is 0.25, psi X/psi Y is 2.12, and the following conditions are satisfied: 1.2< Ψ X/Ψ Y <2.4 design specification.

The maximum radial distance psi Y of the color filter glue dispensing groove (31) is 0.25, the maximum axial distance psi Z of the color filter glue overflow groove (32) is 0.29, psi Y/psi Z is 0.86, and the following requirements are met: a design specification of 0.6< Ψ Y/Ψ Z < 1.9.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, improvements, equivalents and the like that fall within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. An image forming apparatus comprising: a lens barrel (1), a lens group (2) arranged in the lens barrel (1),

the lens barrel (1) includes, in order from an object side to an image side: the device comprises a first boss (11), a second boss (12) and a base (13);

the first boss (11) is connected with the second boss (12);

the second boss (12) is connected with the base (13);

the taper of the first boss (11) is smaller than that of the second boss (12).

2. The imaging apparatus according to claim 1,

the lens group (2) comprises at least 2 lenses, wherein an air gap is formed between the adjacent lenses;

the bearing surface (4) is provided with a color filter (5).

3. The imaging apparatus according to claim 2,

the pressing ring (3) is provided with a color filter glue dispensing groove (31) and a color filter glue overflowing groove (32);

4. The imaging device according to claim 2, characterized in that a ring dispensing groove (131) is arranged at the joint of the inner wall of the base (13) and the pressing ring (3).

5. The imaging apparatus according to claim 4, wherein the opening of the ring bead (131) is gradually increased from the object side to the image side;

6. The imaging device according to claim 2, characterized in that the clamping ring (3) is provided with a notch (34) on one side of the clamping ring dispensing slot (131).

7. The imaging device according to claim 1, wherein the distances from the optical axis to the bearing surfaces (6) where the inner walls of the lens barrel (1) and the lenses of the lens group (2) overlap become larger in order from the object side to the image side.

8. The imaging apparatus according to claim 1, wherein the maximum diameter Φ Q and the maximum entrance aperture Φ P of the object-side end of the first boss (11) satisfy: 1.5< Φ Q/Φ P < 2.5.

9. The imaging apparatus according to claim 1, wherein the maximum diameter Φ T of the image-side end of the first boss (11) and the maximum diameter Φ R of the image-side end of the second boss (12) satisfy: 1.1< Φ T/Φ R < 1.7.

10. The imaging apparatus according to claim 2, wherein the maximum diameter Φ D2 of the pressing ring (3) and the maximum diameter Φ D1 of the color filter satisfy: 1.1< Φ D2/Φ D1< 1.2.

11. The imaging apparatus according to claim 2, wherein the maximum diameter Φ D1 of the color filter and the maximum caliber Φ D3 of the inner wall of the lens barrel (1) satisfy: 1.1< Φ D3/Φ D1< 1.5.

12. The imaging apparatus according to claim 6, wherein the maximum radial distance Ψ X of the notch (34) and the maximum radial distance Ψ Y of the color filter dispensing slot (31) satisfy: 1.2< Ψ X/Ψ Y < 2.4.

13. The imaging apparatus according to claim 6, wherein a maximum radial distance Ψ Y of the color filter dispensing slot (31) and a maximum axial distance Ψ Z of the color filter overflow slot (32) satisfy: 0.6< Ψ Y/Ψ Z < 1.9.

14. An electronic device, comprising: the imaging device of any one of claims 1 to 13, and at least one electrophotographic photosensitive member; wherein the electronic photosensitive element is disposed on an image side of the imaging device.