Camera unit and camera module

Abstract

The utility model provides a camera unit and a camera module, and the camera unit comprises a lens which comprises an outer wall and a first inclined plane, and the first inclined plane is disposed on the outer wall around the optical axis of the lens; the mirror base comprises an inner wall and a second inclined surface arranged on the inner wall, and the inner wall forms an accommodating space; the lens is installed on the lens base along the optical axis direction and is partially located in the accommodating space, and the first inclined surface and the second inclined surface abut against each other; when the first inclined plane slides relative to the second inclined plane, the position of the lens relative to the lens base in the optical axis direction can be adjusted. The first inclined plane and the second inclined plane can adjust the position relation between the imaging surface of the lens and the lens base at any time when the lens and the lens base are assembled, thereby solving the tolerance problem of the imaging surface of the lens. The bearing cooperation of the first inclined plane and the second inclined plane can realize the accurate adjustment of the accurate position of the lens on the optical axis of the lens base, and the high-precision alignment assembly of the lens is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical imaging technical field, especially a kind of camera unit and camera module. BACKGROUND

[0002] With the popularity of mobile electronic devices, the related technology of camera module applied to mobile electronic devices to help users obtain images (such as video or image) has developed rapidly and made progress, and in recent years, camera module has been widely used in many fields such as medical treatment, security, industrial production, etc.

[0003] Camera module imaging needs lens and photosensitive chip to cooperate, that is, to ensure that the imaging surface of the lens and the photosensitive chip correspond to each other. The lens is installed above the lens seat, and the photosensitive chip is also installed below the lens seat through the circuit board. However, since the imaging surface of the lens has a certain tolerance, the position relationship between the imaging surface and the lens seat needs to be adjusted in time when assembling the lens and the lens seat, to ensure that the photosensitive chip installed below the lens seat can be well aligned. In the prior art, the lens and the lens seat are combined and the focal length is adjusted by using a threaded structure. Due to the influence of the structure size of the threaded structure, it is not possible to accurately adjust the position of the lens on the lens seat, that is, it is not possible to accurately adjust the accurate position of the lens on the optical axis of the lens seat according to the actual situation. Moreover, due to the machining precision of the threads and other problems, the coaxiality, inner and outer diameter size control of the threaded structure are easily affected, which is not conducive to the products that need to accurately adjust the position of the lens imaging surface. SUMMARY

[0004] To solve the above problems, the utility model aims to provide a camera unit, comprising: a lens, the lens comprising an outer wall and a first inclined surface, the first inclined surface being arranged on the outer wall around the optical axis of the lens; a lens seat, the lens seat comprising an inner wall and a second inclined surface arranged on the inner wall, the inner wall forming a containing space; the lens is installed on the lens seat along the optical axis direction and partially located in the containing space, and the first inclined surface and the second inclined surface are connected in abutment; wherein, when the first inclined surface slides relative to the second inclined surface, the position of the lens relative to the lens seat in the optical axis direction can be adjusted.

[0005] Further preferably, the first inclined surface and the second inclined surface each comprise a plurality of and are arranged one by one.

[0006] Further preferably, the plurality of first inclined surfaces are connected head to tail and the rotation angle around the optical axis direction is 360°, and the plurality of second inclined surfaces are connected head to tail and the rotation angle around the optical axis direction is 360°.

[0007] Further preferably, the outer wall further comprises a first connecting platform, the inner wall further comprises a second connecting platform, the first connecting platform is connected between two adjacent first inclined surfaces, the second connecting platform is connected between two adjacent second inclined surfaces, and the first connecting platform and the second connecting platform are perpendicular to the optical axis.

[0008] Further preferably, the first inclined surface and the second inclined surface each comprise three and are arranged one by one, and the rotation angle of a single first inclined surface and a single second inclined surface around the optical axis direction is 120°.

[0009] Further preferably, the first inclined surface and the second inclined surface have the same slope at the same contact position.

[0010] Further preferably, the outer wall is provided with a flange portion, the inner wall is provided with a bearing portion, the flange portion and the bearing portion are oppositely arranged, the first inclined surface is arranged at the bottom of the flange portion, and the second inclined surface is arranged at the top of the bearing portion.

[0011] Further preferably, the inner wall is provided with a contact surface, the contact surface protrudes from the inner wall and is close to the optical axis of the lens, and the contact surface abuts against the outer wall.

[0012] Further preferably, the camera unit further comprises fixing glue for bonding and fixing the lens and the lens seat.

[0013] In another aspect, the utility model also provides a camera module which comprises the above-mentioned camera unit.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] (1) The lens and the lens seat are abutted and installed through the first inclined surface and the second inclined surface, and when the first inclined surface and the second inclined surface slide relative to each other, the position of the lens relative to the lens seat in the optical axis direction can be adjusted, that is, the position relationship between the imaging surface of the lens and the lens seat can be adjusted at any time during the assembly of the lens and the lens seat, thereby solving the tolerance problem of the imaging surface of the lens; the abutting cooperation of the first inclined surface and the second inclined surface can realize the accurate adjustment of the accurate position of the lens on the optical axis of the lens seat, thereby realizing the high-precision alignment assembly of the lens. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present utility model will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the references to the following drawings of which:

[0017] Figure 1 The camera unit structure schematic diagram provided by the present utility model is shown in the figure;

[0018] Figure 2 The camera unit structure schematic diagram provided by the present utility model is shown in the figure; Figure 1 The cross section schematic diagram along the line A-A is shown in the figure;

[0019] Figure 3 The lens structure schematic diagram provided by the present utility model is shown in the figure;

[0020] Figure 4 The lens seat structure schematic diagram provided by the present utility model is shown in the figure;

[0021] Figure 5 The unfolded schematic diagram of the first inclined surface and the second inclined surface of an embodiment of the present utility model is shown in the figure;

[0022] Figure 6 The unfolded schematic diagram of the first inclined surface and the second inclined surface of another embodiment of the present utility model is shown in the figure. DETAILED DESCRIPTION

[0023] For a better understanding of the present utility model, various aspects of the present utility model will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of embodiments of the present utility model, and do not limit the scope of the present utility model in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0024] Those skilled in the art should understand that in the disclosure of the present utility model, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation of the present utility model.

[0025] It should also be understood that the use of the terms "including", "including", "having", "containing", and / or "containing" when used in this specification, means that there are present the stated features, elements and / or components, but does not exclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when expressions such as "at least one of" appear after a list of listed features, it modifies the entire list of features and not the individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" indicates that one or more embodiments of the present application. And the term "exemplary" is intended to refer to an example or illustration.

[0026] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. It should also be understood that the terms (such as those defined in a commonly used dictionary) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0027] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] Please refer to Figures 1-4As shown, the present application provides a camera unit, comprising: a lens 10, the lens 10 comprising an outer wall 11 and a first inclined surface 111, the first inclined surface 111 being arranged on the outer wall 11 around the optical axis o of the lens 10; a lens seat 20, the lens seat 20 comprising an inner wall 21 and a second inclined surface 211 arranged on the inner wall 21, the inner wall 21 forming a containing space 22; the lens 10 is mounted on the lens seat 20 along the direction of the optical axis o and partially located in the containing space 22, and the first inclined surface 111 and the second inclined surface 211 abut and connect, that is, the lens 10 is mounted in the containing space 22 of the lens seat 20, and the lens 10 and the lens seat 20 are in contact through the first inclined surface 111 and the second inclined surface 211. Wherein, when the first inclined surface 111 slides relative to the second inclined surface 211, the position of the lens 10 relative to the lens seat 20 in the direction of the optical axis o can be adjusted. It can be understood that in order to realize the sliding of the first inclined surface 111 of the lens 10 and the second inclined surface 211 of the lens seat 20, the lens 10 moves relative to the lens seat 20 in the direction of the optical axis o, that is, in the direction perpendicular to the optical axis o, the first inclined surface 111 and the second inclined surface 211 both have a continuously increasing or continuously decreasing structure. That is, the first inclined surface 111 and the second inclined surface 211 are unfolded and projected onto the plane where the optical axis o is located, and the projection patterns of the first inclined surface 111 and the second inclined surface 211 are both an inclined side that is inclined upward or downward. The first inclined surface 111 and the second inclined surface 211 designed in this way only need to rotate the lens 10 around the optical axis o when assembling the lens 10 and the lens seat 20, that is, the lens 10 can be moved upward or downward in the direction of the optical axis o, thereby realizing the position adjustment of the imaging surface of the lens 10 relative to the lens seat 20.

[0029] The lens 10 and the lens seat 20 are installed by abutting the first inclined surface 111 and the second inclined surface 211, and when the first inclined surface 111 slides relative to the second inclined surface 211, the position of the lens 10 relative to the lens seat 20 in the direction of the optical axis o can also be adjusted, that is, the imaging surface of the lens 10 can be adjusted at any time during the assembly of the lens 10 and the lens seat 20, thereby solving the tolerance problem of the imaging surface of the lens 10; the abutting and matching of the first inclined surface 111 and the second inclined surface 211 can realize the accurate adjustment of the accurate position of the lens 10 on the optical axis o of the lens seat 20, and realize the high-precision alignment assembly of the lens 10.

[0030] Further preferably, the first inclined surface 111 and the second inclined surface 211 each comprise a plurality of and are arranged one-to-one. The plurality of first inclined surfaces 111 and the plurality of second inclined surfaces 211 are arranged one-to-one to prevent the lens 10 and the lens seat 20 from tilting and improve the installation precision of the lens 10.

[0031] Further preferably, please refer to Figure 5 As shown, Figure 5This is a schematic diagram showing the unfolded arrangement of the first inclined surface 111 and the second inclined surface 211 cut along the optical axis o. Multiple first inclined surfaces 111 are connected end-to-end and rotate 360° around the optical axis o. Similarly, multiple second inclined surfaces 211 are connected end-to-end and rotate 360° around the optical axis o. It can be understood that both the multiple first inclined surfaces 111 and the multiple second inclined surfaces 211 form a complete circle around the optical axis o, meaning the rotation angle around the optical axis o is 360°. This ensures that the lens 10 and the lens mount 20 can be connected in all 360° directions via the first inclined surfaces 111 and the second inclined surfaces 211, preventing the lens 10 from tilting relative to the lens mount 20.

[0032] In one embodiment, please refer to Figure 6 As shown, Figure 6 The difference lies in the addition of a first connecting platform 112 and a second connecting platform 212, which cut and unfold the first inclined surface 111 and the second inclined surface 211 along the optical axis o. The outer wall 11 also includes the first connecting platform 112, and the inner wall 21 also includes the second connecting platform 212. The first connecting platform 112 connects between two adjacent first inclined surfaces 111, and the second connecting platform 212 connects between two adjacent second inclined surfaces 211, both perpendicular to the optical axis o. That is, the first inclined surface 111 and the first connecting platform 112 are alternately connected, forming a complete circle around the optical axis o; similarly, the second inclined surface 211 and the second connecting platform 212 are alternately connected, forming a complete circle around the optical axis o. The arrangement of the first connecting platform 112 and the second connecting platform 212 facilitates machine identification and alignment assembly of the lens 10 and the lens mount 20, and the first connecting platform 112 and the second connecting platform 212 serve as a mis-adjusting assembly mechanism.

[0033] Preferably, each of the first inclined surface 111 and the second inclined surface 211 comprises three units, arranged in a one-to-one correspondence, and each of the first inclined surface 111 and the second inclined surface 211 has a rotation angle of 120° around the optical axis o. For example, when there are three first inclined surfaces 111 with a height of 0.1 mm on the optical axis o, and each first inclined surface 111 rotates by 120°, that is, when the lens 10 rotates by 1°, the corresponding height moved in the optical axis o direction is 0.1 mm / 120° = 0.83 μm. The required height to be moved in the optical axis o direction is determined by rotating the angle of the lens 10 relative to the lens mount 20, thus achieving precise control of the position of the lens 10 relative to the lens mount 20.

[0034] In some embodiments, the first inclined surface 111 and the second inclined surface 211 have the same slope at the same contact position. That is, it is ensured that the first inclined surface 111 and the second inclined surface 211 are the same in shape, and when they come into contact, they are not tilted at the contact position, thereby ensuring that the lens 10 does not tilt relative to the lens mount 20.

[0035] Further preferably, the outer wall 11 is provided with a flange portion 12, the inner wall 21 is provided with an abutting portion 23, the flange portion 12 and the abutting portion 23 are oppositely arranged, the first inclined surface 111 is arranged at the bottom of the flange portion 12, and the second inclined surface 211 is arranged at the top of the abutting portion 23. By arranging the corresponding flange portion 12 and the abutting portion 23 on the lens 10 and the lens holder 20 respectively, the first inclined surface 111 and the second inclined surface 211 are facilitated to be formed, and the processing difficulty is reduced.

[0036] Further preferably, the inner wall 21 is provided with a contact surface 213, the contact surface 213 protrudes from the inner wall 21 and is close to the optical axis o of the lens 10, and the contact surface 213 abuts against the outer wall 11. By arranging the contact surface 213 on the inner wall 21 of the lens holder 20 to abut against the lens 10, the installation position of the lens 10 and the lens holder 20 is limited by the contact surface 213, and the lens 10 is further prevented from being inclined and assembled eccentrically, so that the assembly precision and the product yield are improved.

[0037] Further preferably, the camera unit further comprises fixing glue 30, and the fixing glue 30 is used for bonding and fixing the lens 10 and the lens holder 20. After the position adjustment of the lens 10 relative to the lens holder 20 is realized, the lens 10 and the lens holder 20 are further fixed by the fixing glue 30, so that the lens 10 is prevented from sliding relative to the lens holder 20, and the quality of the finished product is further affected.

[0038] On the other hand, the utility model also provides a camera module which comprises the above-mentioned camera unit.

[0039] The above-mentioned embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the patent range of the utility model. It should be pointed out that, for ordinary skilled persons in the art, without departing from the concept of the utility model, a plurality of deformations and improvements can be made, and these all belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. An image pickup unit characterized by comprising: The camera unit comprises: a lens comprising an outer wall and a first slope arranged on the outer wall around an optical axis of the lens; a lens holder comprising an inner wall and a second slope arranged on the inner wall, the inner wall forming a receiving space; the lens is mounted on the lens holder in the direction of the optical axis and partially located in the receiving space, and the first slope and the second slope are connected in abutment; wherein the first slope can adjust the position of the lens relative to the lens holder in the direction of the optical axis when sliding relative to the second slope.

2. The camera unit according to claim 1, characterized in that The first slope and the second slope are both arranged in one-to-one correspondence.

3. The camera unit according to claim 2, characterized in that The first slope and the second slope are both arranged in one-to-one correspondence.

4. The camera unit according to claim 2, characterized in that The first slope and the second slope are both arranged in one-to-one correspondence.

5. The camera unit according to claim 1, characterized in that The first slope and the second slope are both arranged in one-to-one correspondence.

6. The camera unit according to claim 1, characterized in that The first slope and the second slope are both arranged in one-to-one correspondence.

7. The camera unit according to claim 1, characterized in that The first slope and the second slope are both arranged in one-to-one correspondence.

8. The camera unit according to claim 1, characterized in that The first slope and the second slope are both arranged in one-to-one correspondence.

9. The camera unit according to claim 1, characterized in that, The first slope and the second slope are both arranged in one-to-one correspondence.

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