CN114527526B

CN114527526B - Split lens, camera module and electronic device

Info

Publication number: CN114527526B
Application number: CN202011237190.0A
Authority: CN
Inventors: 戎琦; 陈飞帆; 周凯伦; 蒋伟杰
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2023-10-27
Anticipated expiration: 2040-11-09
Also published as: CN114527526A

Abstract

The invention discloses a split lens, a camera module and an electronic device. The split lens includes: a focusing lens whose optical surface shape changes when pressed; a plurality of lens groups including at least a first lens group and a second lens group disposed adjacent to opposite sides of the adjustable lens, respectively, along an optical axis direction of the adjustable lens; the first frame and the second frame are fixed in relative position with the first lens group or the second lens group, and the second frame is connected with the adjustable lens; and a driving member configured to provide a driving force to cause relative movement between the second frame and the first frame in at least one direction such that the adjustable lens is subjected to a squeezing action. The invention has compact structure, easy manufacture, simple and efficient assembly operation and better automatic focusing and optical anti-shake effects.

Description

Split lens, camera module and electronic device

Technical Field

The present invention relates to the field of optical devices, and in particular, to a split lens, a camera module, and an electronic device.

Background

Auto Focus (AF) is to use the principle of light reflection of a subject, to image and receive reflected light on an image sensor after passing through a lens, to obtain the object distance of the subject through computer processing, and to automatically move the lens according to the object distance to complete focusing.

Optical anti-shake (Optical Image Stabilization, OIS) is a shake detection by a gyroscope and then the entire lens is translated or rotated in the opposite direction by an OIS motor to compensate for image blur due to terminal equipment shake during exposure.

For conventional lenses, different motor assemblies are typically used to drive the lens to move or rotate to achieve auto-focus and optical anti-shake, respectively. In order to meet the demands of people for miniature zoom lenses, a new optical element, i.e., a liquid lens, a polymer lens or a gas lens, is developed that dynamically adjusts the refractive index of the lens or adjusts the focal length by changing the surface shape thereof and realizes optical anti-shake.

For liquid lenses, auto-focusing and optical anti-shake of the liquid lens can be achieved simultaneously by driving the motor assembly. For example, in fig. 1, there is shown a conventional focusing motor structure for disposing a liquid lens, which mainly includes a housing 1', an upper lens group 2', a liquid lens 3', a lower lens group 4', a support frame 5 'provided with a ball groove, a base 6', a magnet 7', a coil 8', balls 9', and a iron sheet 10'. In the prior art, as shown in fig. 2, a liquid lens generally adopts a structure composed of, for example, a piezoelectric element 10', a glass film 11', a supporting glass 12', and a silica gel 13', and deforms by the piezoelectric element 10 'after being electrically deformed, so that the silica gel 13' is pressed to deform, thereby changing the back focus of the overall optical system, and further enabling the lens to focus.

However, the present application has been made in view of the above problems, and it is an object of the present application to provide a liquid lens capable of preventing an optical vibration from occurring in a liquid lens, which is capable of preventing an optical vibration from occurring in the liquid lens, and a method for manufacturing the same. On the other hand, in the conventional art, if a driving device is provided at one side of the liquid lens, the size of the liquid lens is increased, and thus the overall size of the lens is increased.

Disclosure of Invention

In view of the above, the present application provides a split lens, an image capturing module, and an electronic apparatus, which can solve or at least alleviate one or more of the above problems and other problems.

First, according to an aspect of the present application, there is provided a split type lens comprising:

a focusing lens whose optical surface shape changes when pressed;

a plurality of lens groups including at least a first lens group and a second lens group disposed adjacent to opposite sides of the adjustable lens, respectively, along an optical axis direction of the adjustable lens;

The first frame and the second frame are fixed in relative position with the first lens group or the second lens group, and the second frame is connected with the adjustable lens; and

and a driving member configured to provide a driving force to cause relative movement between the second frame and the first frame in at least one direction such that the adjustable lens is subjected to a squeezing action.

In the split lens according to the present invention, optionally, the split lens further includes:

a rigid member which is provided between the adjustable-focus lens and the first lens group or the second lens group and whose longitudinal center line substantially coincides with the optical axis, and which is movable in the optical axis direction upon relative movement between the first frame and the second frame; and/or

And a sealing member provided between the adjustable-focus lens and the first lens group and/or between the adjustable-focus lens and the second lens group.

In the split lens according to the present invention, optionally, the adjustable-focus lens includes:

a film body configured as a closed cavity accommodating the deformable light-transmitting portion therein;

A first rigid portion disposed around the closed cavity; and

and a second rigid portion provided on the outer surfaces of the closed cavity and the first rigid portion, and one side of the second rigid portion is connected to the rigid member.

In the split lens according to the present invention, optionally, the first rigid portion and/or the second rigid portion is made of a glass material, and/or the deformable light-transmitting portion is made of an elastomer material or a light-transmitting liquid material, the elastomer material including a silicone gel or a gel.

In the split lens according to the present invention, optionally, an adhesive region is provided on an outer side of the first rigid portion, the adhesive region is provided with a light-transmitting adhesive material, and the adjustable-focus lens is adhered to the first lens group or the second lens group adjacent thereto by the light-transmitting adhesive material.

In the split lens according to the present invention, optionally, the rigid member is provided with:

a marking portion provided for aligning an installation direction with between the adjustable-focus lens and the first lens group or the second lens group when the rigid member is installed;

a clamping portion configured to perform a clamping operation; and/or

And a support portion supported on the second frame.

In the split lens according to the present invention, optionally, the rigid member is provided with at least 3 supporting portions uniformly arranged along a circumferential direction thereof, and/or the marking portion includes an information feature portion recording at least production information of the rigid member, and/or the holding portion is provided at a side of the rigid member and has a straight-side section having a length of not less than 0.3mm.

In the split lens according to the present invention, optionally, the rigid member is provided with at least 4 holding portions which are uniformly arranged along the side edges of the rigid member, and each of the holding portions has a straight-edge section having a length of substantially 0.600 mm.

In the split lens according to the present invention, the rigid member is optionally attached to a side portion of the adjustable-focus lens, or the rigid member is integrally formed with the second frame.

a main body including an outer structural portion, a rigid light-transmitting portion, and a deformable light-transmitting portion, the outer structural portion being located outside the main body, the rigid light-transmitting portion being connected to the outer structural portion and having an optical region surrounding the optical axis and a structural region located outside the optical region, the structural region being connected to the first lens group or the second lens group, the deformable light-transmitting portion being surrounded by the rigid light-transmitting portion and being deformed when subjected to a pressing action; and

And a rigid portion provided on an outer surface of at least one side of the main body.

In the split lens according to the present invention, optionally, the outer structure portion and/or the rigid light-transmitting portion is made of a hard material including glass or plastic, and/or the deformable light-transmitting portion is made of an elastomer material including silica gel or a light-transmitting liquid material, and/or the structure region is connected to the first lens group or the second lens group by an adhesive material.

In the split lens according to the present invention, optionally, the surface reflectance of the outer structure portion is < 5%, and/or the surface reflectance of the adhesive material is < 5%.

In the split lens according to the present invention, optionally, a first side adhesive material and a second side adhesive material are disposed between the adjustable lens and the adjacent lens group, the first side adhesive material is used for connecting the outer side of the adjustable lens close to the optical zone, and the second side adhesive material is disposed at the outermost side of the adjustable lens and is used for connecting the adjacent lens group.

In the split lens according to the present invention, optionally, the second side adhesive material has a surface reflectance of < 5%.

In the split lens according to the present invention, the relative movement may include movement in a first direction parallel to the optical axis direction, a second direction perpendicular to the optical axis direction, a third direction forming an inclination angle with the optical axis direction, and/or a circumferential direction around the optical axis direction.

In the split lens according to the present invention, optionally, the driving part includes:

a first moving unit provided on the first frame and/or the second frame for providing a driving force to cause a relative movement between the first frame and the second frame in the first direction; and

and a second moving unit provided on the first frame and/or the second frame for providing a driving force to cause a relative motion between the first frame and the second frame in the second direction.

In the split lens according to the present invention, optionally, the first moving unit and/or the second moving unit is a coil magnet.

In the split lens according to the present invention, optionally, the second frame is provided with a side portion extending gradually from the bottom portion toward the central axis direction of the second frame, and/or an assembly gap having a width ranging from 0.1 to 0.5mm is reserved between the second frame and the first lens group or the second lens group connected thereto.

In the split lens according to the present invention, optionally, the split lens further includes 3 support arms substantially 120 ° apart from each other, which are connected to the first lens group or the second lens group to support them in a horizontal plane perpendicular to the optical axis direction.

In the split lens according to the present invention, optionally, the second frame is provided with bumps respectively corresponding to the connection of the 3 support arms, which are arranged to have a substantially flush height with each other after being connected with the 3 support arms.

In the split lens according to the present invention, the bump is optionally provided 0.3 to 0.7mm higher than an outer surface of the first frame.

In the split lens according to the present invention, optionally, the first frame is provided to be fixed in relative position with respect to the housing of the split lens, and the first frame is connected to the second frame through a ball frame, OIS suspension coil, SMA frame, or piezoelectric frame.

In the split lens according to the present invention, optionally, the first frame is provided with at least 3 ball grooves for accommodating balls, the ball grooves being provided to have accommodating cavities larger than the balls.

In the split lens according to the present invention, optionally, a housing of the split lens is provided with a stopper portion provided on an inner side surface of the housing for defining a movement position of the second frame.

In the split lens according to the present invention, optionally, the split lens further includes a light shielding member provided between the adjustable lens and a lens group located thereabove along a light entering direction of the adjustable lens for shielding light from entering an inside of the adjustable lens from a side portion of the adjustable lens.

In the split lens according to the present invention, optionally, the light shielding member is provided to extend outward from a lens barrel in a lens group located above the adjustable-focus lens, and a light shielding portion is provided on an outer side of the light shielding member to shield a gap between the lens group and the adjustable-focus lens through which light can pass.

In the split lens according to the present invention, optionally, the sealing member is an adhesive material having a surface reflectance of < 5%, and is provided between the adjustable-focus lens and the first lens group or the second lens group.

In the split lens according to the present invention, optionally, a lens of the plurality of lens groups that is most adjacent to the adjustable lens is provided with a glue spreading groove and a glue overflow groove, and at least one notch having a recess is provided on an outer side of the glue overflow groove for preventing the adhesive material from overflowing to a side of the most adjacent lens.

In the split lens according to the present invention, optionally, the depth of the concave portion is in the range of 30-80um.

In the split lens according to the present invention, optionally, the adjustable-focus lens includes a liquid lens that is a single-piece liquid lens or a multi-piece liquid lens group.

Furthermore, according to a second aspect of the present invention, there is also provided an image pickup module including:

the photosensitive unit is used for performing photoelectric conversion treatment on the received light rays to form images; and

a split lens as claimed in any one of the preceding claims, which is arranged on a photosensitive path of the photosensitive unit.

Further, according to a third aspect of the present invention, there is also provided an electronic device comprising an imaging module as described above.

The split lens provided by the invention has the advantages of compact structure, easiness in manufacturing, simplicity and high efficiency in assembly operation, and capability of very rapidly, reliably and accurately controlling the displacement deformation of the focusing lens in the split lens when automatic focusing and optical anti-shake operation are carried out, so that better automatic focusing and optical anti-shake effects are realized. The split lens has wide application range and strong practicability, and can effectively improve the working performance and the product competitiveness of the existing split lens.

Drawings

The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and examples, but it should be understood that these drawings are for illustrative purposes only and are not necessarily drawn to scale.

Fig. 1 is a schematic diagram of a prior art liquid lens with a focusing motor.

Fig. 2 is a schematic cross-sectional view of a prior art liquid lens using piezoelectric element actuation.

Fig. 3 is a schematic cross-sectional structure of a first embodiment of a split lens according to the present invention.

Fig. 4 is a schematic cross-sectional view of the tunable lens in the first embodiment of the split lens shown in fig. 3.

Fig. 5 is a schematic cross-sectional structure of a second embodiment of a split lens according to the present invention.

Fig. 6 is a schematic cross-sectional view of the adjustable lens in the second embodiment of the split lens shown in fig. 5.

Fig. 7 is a schematic top view of the components such as the rigid member in the second embodiment of the split lens shown in fig. 5.

Fig. 8 is a schematic top view of the rigid member in the second embodiment of the split lens shown in fig. 5.

Fig. 9 is a schematic cross-sectional structure of a third embodiment of a split lens according to the present invention, wherein a part of constituent parts have been omitted.

Fig. 10 is a schematic sectional structure of a fourth embodiment of a split lens according to the present invention, in which a part of constituent parts have been omitted.

Fig. 11 is a schematic sectional structure of a fifth embodiment of a split lens according to the present invention, in which a part of constituent parts have been omitted.

Detailed Description

First, it should be noted that the composition, construction, features, advantages, and the like of the split lens, the image capturing module, and the electronic apparatus according to the present invention will be described below by way of example, but all descriptions should not be construed as limiting the present invention. In this document, the technical terms "connected (or connected, etc)" encompass a direct connection of a particular component to another component and/or an indirect connection to another component, the technical terms "upper," "lower," "right," "left," "vertical," "horizontal," and derivatives thereof should be taken in connection with the orientations in the various figures, and it should be understood that the present invention may take a variety of alternative orientations, the technical terms "first," "second," are used merely for purposes of distinguishing between the descriptive purposes and not intended to indicate their sequential and relative importance, etc., the technical term "substantially" is intended to include insubstantial errors associated with a particular amount of measurement, including, for example, ±8%, ±5% or ±2% ranges for a particular value, etc.

Furthermore, to any single feature described or implied in the embodiments herein, or any single feature shown or implied in the figures, the invention still allows any combination or deletion of such features (or equivalents thereof) without any technical barrier, thereby covering further embodiments according to the invention. In addition, for the sake of brevity, identical or similar components and features may be identified in the same drawing only at one location or several locations, and general matters already known to those skilled in the art, such as basic configurations, constructions, materials used, etc., of the components, such as coil magnets, voice coil motors, etc., that may be used to provide the driving force, are not repeated herein.

The technical solution of the present invention will be specifically described below by means of a plurality of exemplary split lens embodiments shown in fig. 3 to 11. In general, the split lens according to the present invention may include two or more lens groups, an adjustable lens 1, a first frame 4, a second frame 5, and a driving part 6, wherein the driving part 6 may be used to provide driving force to cause relative movement between the first frame 4 and the second frame 5 in one or more directions (e.g., directions parallel to, perpendicular to, or forming an oblique angle with, circumferential directions around, etc. the optical axis L of the adjustable lens 1), and may thereby form a pressing action on the adjustable lens 1 to deform its optical surface shape to change optical refractive properties, resulting in a change in focal length of the adjustable lens 1, thereby enabling precise control of displacement deformation of the adjustable lens 1, and obtaining better control effects of auto-focusing and optical anti-shake.

In particular, referring first to fig. 3, a schematic cross-sectional view of a first embodiment of a split lens according to the present invention is shown. In the split lens 100, the first lens group 2 and the second lens group 3 are disposed on both sides of the adjustable lens 1, respectively, that is, as shown in fig. 3, such that the upper and lower sides of the adjustable lens 1 are adjacent to the lenses 20 and 30 in the first lens group 2 and the second lens group 3, respectively. The first lens group 2 may be fixedly connected to the support arm 7 and the housing 10 of the split lens 100 by a connecting member 21 (e.g. in the form of an adhesive member or the like), the first frame 4 is positioned between the housing 10 and the base 9 to fix the relative position between the first lens group 2, and the second frame 5 is connected to the adjustable lens 1 by a connecting member 51, so that the second frame 5 can move relative to the first frame 4 after the driving force is provided by the driving member 6.

As an alternative, as shown in fig. 3, shafts a1 and a2 may be provided between the second frame 5 and the first frame 4 for movably connecting them together in this embodiment, which arrangement is also advantageous in ensuring perpendicularity therebetween. As an example, in the split lens 100, the driving part 6 may be provided to have the first moving unit 61 and the second moving unit 62, and arranged on the first frame 4 so as to provide corresponding driving forces when the application requires, so that the second frame 5 can generate relative movement with respect to the first frame 4 in a direction parallel to the optical axis L, in a direction perpendicular to the optical axis L.

For example, the first moving unit 61 and the second moving unit 62 may be implemented in any feasible manner, such as a coil magnet. For example, as for the first moving unit 61, it may take the form of a coil magnet for driving the second frame 5 to perform a sliding motion with respect to the first frame 4 along the axis a1 provided therebetween by supplying a magnetic force thereto, so that the movement of the second frame 5 in the optical axis L direction can be achieved by means of the above-described relatively simple structure while the first frame 4 is preferably held stationary with respect to the second frame 5 in the optical axis L direction. Similarly, the second moving unit 62 may also be in the form of a coil magnet to provide a magnetic force to drive the second frame 5 to perform a sliding motion with respect to the first frame 4 along the axis a2 provided therebetween after energization, thereby effecting movement of the second frame 5 in a direction perpendicular to the optical axis L. Of course, the first and second moving units 61 and 62 may each separately provide driving force or may simultaneously provide corresponding driving forces, depending on the specific application requirements.

It should be understood that the above description of the drive member 6 is for illustrative purposes only, and that the drive member 6 is permitted to be implemented using, for example, any other structural configuration, unit, module, device, etc. known in the art to provide drive to facilitate relative movement of the second frame 5 and the first frame 4 in one, two or more directions without departing from the spirit of the present invention.

Referring to fig. 4, the general structural composition of the adjustable lens 1 in the split lens 100 is schematically shown. It should be appreciated that the adjustable focus lens 1 is also applicable to other embodiments of the split lens according to the present invention.

As shown in fig. 4, the adjustable-focus lens 1 may include a main body 11 and a rigid portion 12. For the main body 11, it may include a deformable light transmitting portion 17, an outer side structure portion 18, and a rigid light transmitting portion 19. The outer structure 18 is provided outside the main body 11 with respect to other parts, and can be used to connect other parts in the split lens 100, such as the above-described connector 51. The outer structure 18 may preferably be a rigid body, which may be made of a hard material such as glass, plastic, or the like. In some embodiments, the outer structure 18 may be provided with a surface reflectivity of < 5%, which may be achieved by e.g. selecting a material of a darker color, such as black, dark grey, or a coating material of such a color, so that light leaking into the adjustable lens 1 from the outside can be advantageously reduced.

For the rigid light-transmitting portion 19, which is connected to the outer structural portion 18 and has a structural region 111 and an optical region 112, the optical region 112 is a relatively central region around the optical axis L of the adjustable lens 1, and the structural region 111 is a region located relatively far from the optical axis L outside the optical region 112, which structural region 111 can be utilized for connecting the second lens group 3 by using, for example, an adhesive material or the like. It will be appreciated that for the adhesive materials described above, as well as those mentioned elsewhere herein, adhesive material products having a surface reflectivity of < 5% are contemplated for use in order to facilitate reducing the effects of stray light entering the optical zone 112. Alternatively, the rigid light-transmitting portion 19 may be made of a rigid material such as glass, plastic, or the like, and may be formed into an enclosed space by any feasible process such as glass bonding, glue bonding, or the like, for enclosing the deformable light-transmitting portion 17 therein.

For the deformable light transmitting portion 17, it is surrounded by the rigid light transmitting portion 19 and has a property of being deformed when subjected to a pressing action. In the present embodiment, the deformable light transmitting portion 17 may alternatively be made of any suitable material such as an elastomer material or the like (e.g., silica gel, etc.), various light transmitting liquid materials, etc.

As shown in fig. 4, the rigid portion 12 may be disposed on one or both outer surfaces of the main body 11 and may be connected with the rigid light-transmitting portion 19 according to various application requirements, so as to further adjust the overall structural performance of the focus lens 1, so that it is durable even if repeatedly subjected to the pressing action for a long period of time, and has reliable working performance.

As an alternative, in fig. 3, a support arm 7 is also shown which can be connected to the first lens group 2 via a connection 21 to provide a supporting effect, it being possible for the support arm 7 to also be connected to the first frame 4 at the same time. The support arms 7 can be constructed in various suitable shapes and flexibly arranged according to different applications. For example, it is conceivable to provide 3 support arms 7 simultaneously and to arrange them optionally substantially 120 ° apart from each other, so as to support the first lens group 2 in a flat horizontal plane perpendicular to the direction of the optical axis L. For example, as shown in the plan view of fig. 7, by providing the above 3 support arms 7, they can form a relatively stable triangle structure from the centered round lens to the three support arms, thereby enabling a relatively high overall structural strength and stability.

As a further alternative, in the split lens 100, the projections 52 corresponding to the above-described 3 support arms 7 are also provided on the second frame 5, and these projections 52 may have substantially the same height so as to have a substantially flush height with each other after they are correspondingly connected to these support arms 7. In some embodiments, the projection 52 may be provided to be 0.3-0.7mm higher than the outer surface 42 of the first frame 4 in order to reduce the length of the support arm 7 as much as possible, thereby reducing problems in terms of poor molding, reduced structural strength, etc. that may be caused by the longer or increased length of the support arm 7, and contributing to a more compact overall structure.

In the split lens 100 shown in fig. 3, the first frame 4 may also be connected to the second frame 5 in a ball-and-socket manner as an alternative. For example, 3 or more ball grooves 40 may be provided on the outer surface 42 of the first frame 4 for receiving the balls 41, and these ball grooves 40 may preferably be designed to have a receiving cavity (e.g., rectangular or the like) larger than the balls 41 in size, and since the receiving groove 40 has a relatively large size, it is possible to ensure free movement of the balls 41 within the receiving groove 40, thereby making the regulation operation of the internal structure of the split lens considerably flexible, timely and precise.

Further, in some embodiments, a plurality of ball grooves may be provided on the base 9 of the split lens 100 and balls may be disposed therein, for example, 3 ball grooves may be preferably provided such that two ball grooves 40 adjacent to each other are substantially 120 ° from the center, thereby forming a substantially smooth plane, and since the ball grooves and the ball structures are uniformly disposed with respect to the center, they may form a relatively stable structure after the completion of the assembly, enabling good assembly quality after the assembly of the first frame 4 on the base 9, and ensuring the product quality and competitiveness of the split lens.

It should be noted that the ball type adopted by the first frame 4 is merely illustrative, and those skilled in the art will understand that other structural forms such as OIS suspension coil, SMA frame, piezoelectric frame, double-frame ball frame, etc. are also suitable for the technical solution of the present invention.

On the other hand, in some embodiments, it is considered that the structure of the second frame 5 is optimally designed. For example, in order to reduce a certain head size, the second frame 5 may be provided in such a manner that a sloping side thereof extends, i.e., a side portion thereof gradually extends from the bottom toward the central axis direction of the second frame 5; for another example, in order to prevent interference problems caused by assembly eccentricity between the second frame 5 and the second lens group 3, an assembly gap may be reserved between the second frame 5 and the second lens group 3, for example, the width thereof may be set to 0.1-0.5mm, so that the above-described interference problems that may occur therebetween may be effectively solved.

Furthermore, since the split design is adopted between the adjustable lens 1 and the first lens group 2 and the second lens group 3 in the present embodiment, the gap between the first lens group 2 and the second lens group 3 may cause parasitic light influence on the optical system. Alternatively, a sealing member may be provided between the first lens group 2 and the adjustable lens 1 and/or between the second lens group 3 and the adjustable lens 1, and it may be preferably performed by coating with an adhesive material having a surface reflectance of < 5% (e.g., black glue or the like) so as to reduce or eliminate the influence of external and parasitic light due to reflection of the sealing member inside the lens.

On the other hand, as an alternative, a glue distribution groove and a glue overflow groove may be provided on the lens 20 and/or the lens 30 nearest to the adjustable lens 1, so as to optimize the position of the adhesive material (such as glue) and prevent the adhesive material from overflowing to cause an undesired accumulation phenomenon, resulting in the risk of interference between the lens and the second frame 5, for example. In addition, one or more notches with depressions (e.g., in the depth range of 30-80 um) may be provided on the outside of the flash groove to prevent adhesive material from spilling out to the sides of the lenses, thereby creating an undesirable risk of interference.

In addition, as an alternative, adhesive materials may be applied to both sides between the adjustable lens 1 and the adjacent lens group, that is, on the one hand, the first side adhesive material may be applied to connect the outer side of the adjustable lens 1 near the optical area 112, so as to play a role in connecting the rigid area of the adjustable lens 1, and at the same time, the second side adhesive material may be applied to the outermost side of the adjustable lens 1 so as to connect the lens group adjacent to the adjustable lens 1, thereby preventing external dust from entering the adjustable lens 1 and causing pollution. It will be appreciated that the second side adhesive material may be an adhesive material with a surface reflectivity of < 5% in order to prevent ambient light from entering the adjustable lens 1 and causing stray light effects, since ambient light may sometimes leak from the outside gap into the interior of the adjustable lens 1, causing a risk of light leakage to the interior.

In fig. 3, a housing 10 of a split lens 100 is shown, which can protect components mounted therein from impact, intrusion of debris, etc. Furthermore, in some alternative embodiments, a limiting portion may be provided on the housing 10, for example, on an inner side surface of the housing 10, so as to serve to limit the movement position of the second frame 5, so that the structural safety performance of the split lens can be more fully ensured.

With reference to fig. 5, 9, 10 and 11, further description will be given of still other split lens embodiments according to the present invention, namely, split lenses 200, 300, 400 and 500. In the light of simplifying the drawings, some component structures are intentionally omitted in these drawings, but it should be noted that, unless otherwise specified, the above description about the corresponding portions or structures in the split lens 100 is equally applicable to other split lens embodiments, and the descriptions about the corresponding portions or structures of the different split lenses are also correspondingly applicable, and thus are not repeated herein.

Referring to fig. 5, a rigid member 8 is disposed in the split lens 200 and is disposed on the upper side of the adjustable lens 1, i.e. between the adjustable lens 1 and the first lens group 2, so as to protect the adjustable lens 1. Unlike the existing lens barrel, the rigid part 8 and the adjustable lens 1 are in an assembled relationship, so that the rigid part 8 and the adjustable lens 1 do not need to be bonded together in advance through a bonding material; on the other hand, the assembly accuracy requirement between the rigid member 8 and the adjustable lens 1 is also lower than that of the conventional lens barrel, so that in the present embodiment, only the outer side of the rigid member 8 and the center of the adjustable lens 1 need to be ensured to be substantially consistent, and there is no need to achieve a higher assembly level with respect to the lens barrel and the like, which is generally strict as in the prior art.

As an exemplary illustration, in order to facilitate the active assembly of the rigid member 8 and the adjustable lens 1, a marking portion 82 may be provided on the rigid member 8, for example, on one or both side surfaces of the rigid member 8, for use as a mark for aligning the mounting direction at the time of mounting, for example, the mounting direction of the rigid member 8 is shown by the marking portion 82 on the top view shown in fig. 8. Further, the information feature may be provided on the mark 82 to record, for example, production information (e.g., a production lot specification) of the rigid member 8, so that a person can trace the rigid member 8.

In addition, a clamping portion 81 may be provided on the rigid member 8 to facilitate the clamping operation thereof. For example, as shown in fig. 7 and 8, 4 or more clamping portions 81 may be optionally provided on the rigid member 8, and they may be uniformly arranged along the side edges of the rigid member 8 so as to be decomposed to contact stresses in four directions A, B, C and D when the rigid member 8 is subjected to a clamping operation, which enables a more uniform clamping force than is commonly used in the prior art in which forces are applied in two directions P1 and P2. Each clamping portion 81 may have a straight-sided section (e.g., a length of not less than 0.3mm, e.g., approximately 0.600mm, etc.), so that strength with high clamping stability can be obtained.

With continued reference to fig. 6, which schematically illustrates a general structural configuration of the variable focus lens 1 in the split lens 200, the variable focus lens 1 may include a membrane 13, a first rigid portion 15, a second rigid portion 16, and a deformable light transmissive portion 17.

Specifically, the closed cavity 14 may be formed by the film body 13 so as to accommodate the deformable light transmitting portion 17 in the closed cavity 14. As described above, the deformable light transmitting portion 17 deforms when pressed to change the optical surface shape and thus the refractive power, and thus the focus change of the adjustable lens 1 can be achieved. The first rigid part 15 is arranged around the closed cavity 14 to provide a supporting force for the adjustable lens 1, while the second rigid part 16 is arranged on the outer surfaces of the closed cavity 14 and the first rigid part 15 and can be connected on one side to the rigid part 8.

By way of example, the first rigid portion 15 and the second rigid portion 16 may be made of glass material or the like. As another example, an adhesive region may be provided on the outside of the first rigid portion 15, and a light-transmissive adhesive material may be provided at the adhesive region for adhering the adjustable lens 1 to the rigid member 8 adjacent thereto.

In the above-described split lens 200, the rigid member 8 may be arranged such that its longitudinal center line substantially coincides with the optical axis L of the adjustable-focus lens 1. When a relative movement is generated between the first frame 4 and the second frame 5, the rigid member 8 will move along the optical axis L. For example, in the case shown in fig. 5, since the lower side of the rigid member 8 is connected to the first rigid portion 15 of the adjustable lens 1, the rigid member 8 will move up and down in the direction of the optical axis L by the driving of the second frame 5, so that the deformable light transmitting portion 17 located inside the adjustable lens 1 can be subjected to a pressing action, and thereby the optical surface shape and refractive power are changed, and the focus change of the adjustable lens 1 is achieved. Further, by the contact between the rigid member 8 and the adjustable lens 1, the latter is offset by the driving pressing of the rigid member 8, but an anti-shake effect can be achieved due to the abutting contact with the rigid member 8.

In addition, in some embodiments, the rigid member 8 may be connected to, for example, a side surface or the like of the adjustable lens 1, so that the adjustable lens 1 may be moved therewith by the movement of the rigid member 8, and particularly, the center of the adjustable lens 1 may be shifted, so that the center deviation of the adjustable lens 1 may be compensated for, thereby realizing the adjustable lens 1 having an anti-shake effect.

In other embodiments, a support arm may be provided on the rigid member 8 and attached at one end to the second frame 5, and the second lens group 3 may also be attached to the second frame 5. In this way, the movement of the second frame 5 drives the adjustable lens 1 to move up and down along the direction of the optical axis L via the rigid component 8, so that the adjustable lens 1 also moves to adjust the optical center position thereof, thereby realizing the anti-shake effect. Alternatively, the rigid member 8 may preferably have 3 or more support arms simultaneously thereon, which may be uniformly arranged along the circumferential direction so as to move the adjustable lens 1 upon receiving the drive provided by the drive member such as a coil magnet, thereby changing the optical center position of the adjustable lens 1 and realizing accurate control of the displacement deformation of the adjustable lens 1.

Next, a third embodiment of the split lens according to the present invention, i.e., a split lens 300, will be described by fig. 9.

In this embodiment, the split lens 300 has substantially the same structural configuration as the split lens 200 discussed above, except that the rigid member 8 is now adapted to be disposed on the underside of the adjustable lens 1 so as to be located between the adjustable lens 1 and the second lens group 3. With the above arrangement, the adjustable-focus lens 1 can also be subjected to the pressing action thereby generated when the relative movement is made between the second frame 5 and the first frame 4, thereby changing the optical surface shape and refractive index, and realizing the focus change thereof.

It should also be noted that in some embodiments, the rigid member 8 may be directly connected to the first moving unit 61, or even both may be integrally formed. In this way, under the action of the driving force provided by the first moving unit 61 in the vertical direction, the rigid member 8 can move along the direction of the optical axis L of the adjustable lens 1, so as to drive the adjustable lens 1 to deform, thereby affecting the refractive index and focal length change.

With continued reference to fig. 10, another split lens embodiment in accordance with the present invention, a split lens 400, is shown.

As shown in fig. 10, a light shielding member 22 is added to the split lens 400, and may be disposed between the adjustable lens 1 and the first lens group 2, for example, preferably outside the first lens group 2 to shield stray light that may enter the split lens 400. In practical applications, the light shielding member 22 may be configured in any suitable shape for light shielding purposes, for example, it may be implemented in a circular ring shape or the like.

As an example, the light shielding member 22 may be provided to extend outward from the barrel of the first lens group 2, and a light shielding portion 221 extending downward is provided at an outer side of the light shielding member 22 so as to shield a gap S between the first lens group 2 and the adjustable lens 1 through which light can pass, thereby effectively reducing a parasitic light effect on the lens. On the other hand, since the light shielding member 22 reduces the incidence range of the light, after the light passes through the reflection between the first lens group 2 and the focusing lens 1, part of the light is reduced in each reflection, so that the ambient light is not easy to accumulate together to cause the effect of stray light, thereby being capable of remarkably reducing the undesired effect of stray light. Furthermore, the provision of the light shielding member 22 also protects the adjustable lens 1 and the lens groups and the like.

Another split lens embodiment, namely split lens 500, according to the present invention is presented continuously in fig. 11.

In the split lens 500, not only the light shielding member 22 is provided, but also an annular protrusion may be provided at a suitable position in the split lens 500, for example, may be provided at the lens barrel, the connecting member 51, the second frame 5, etc. of the second lens group 3, so that the angle of incident light may be reduced, and further the influence of parasitic light may be reduced, thereby being capable of improving the workability of the split lens.

It should be noted that in the embodiments discussed above, the connection of the second frame 5 to the second lens group 3 and the movement thereof with respect to the first frame 4 are exemplified, however, the invention also allows for a solution of changing the second frame 5 to the connection of the first lens group 2 and the movement thereof with respect to the first frame 4, and also for a solution of changing the driving means provided on the second frame 5 for actuating the movement of the first frame 4 with respect to the second frame 5, or for simultaneously providing corresponding driving means on the first frame 4 and the second frame 5, both of which solutions can be used for effecting a relative movement between the first frame 4 and the second frame 5 in at least one direction, so that the adjustable focus lens can be subjected to a squeezing action. Further, it should be understood that for the adjustable focus lens of the present invention, it may be a liquid lens (e.g., a single liquid lens, a multi-piece liquid lens group), a polymer lens, a gas lens, or the like.

According to the design concept of the invention, there is also provided an image pickup module, which may include a photosensitive unit and the split lens according to the invention as described above, wherein such split lens may be disposed on a photosensitive path of the photosensitive unit, and then the latter performs photoelectric conversion processing on the received light for imaging, so as to perform convenient, rapid and accurate operation using the split lens according to practical application conditions, thereby being capable of achieving better auto-focusing and optical anti-shake effects significantly better than those of the prior art.

By way of illustration, as described above, since the adjustable lens 1 is disposed on the lower side of the first lens group 2 in some embodiments, the clearance for assembling the image pickup module in the body at this time only needs to be ensured as the assembly clearance between the first lens group 2 fixed on the first frame 4 and the body, thereby avoiding the influence that the image pickup module needs to be set aside by the protruding distance after the press deformation due to the press deformation of the adjustable lens 1. The above effects will require reserving a larger gap between the camera body and the camera module, which will increase the size of the camera module and the camera body, making TTL (Through The Lens) of the camera module higher, damaging the overall beauty of the electronic device, and adopting the camera module of the invention completely eliminates the above problems.

Furthermore, according to the design concept of the present invention, there is also provided an electronic device in which the above-mentioned camera module is provided, and such an electronic device may include, but is not limited to, a mobile phone, a notebook computer, a tablet computer, a camera, etc. The invention can further improve the performance and quality of the electronic device and the product competitiveness. The technical scheme of the invention has quite wide application range and quite remarkable practicability.

The split lens, the camera module and the electronic device according to the present invention have been described in detail by way of example only, and these examples are merely illustrative of the principles of the present invention and their embodiments, and not limitation of the invention, and various modifications and improvements may be made by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, all equivalent arrangements should be considered to be within the scope of the present invention and as defined in the claims.

Claims

1. The utility model provides a split type camera lens which characterized in that, split type camera lens includes:

a focusing lens whose optical surface shape changes when pressed;

A first frame positioned between the housing and the base such that a relative position between the first frame and the first lens group is fixed, a second frame connected to the adjustable lens by a connector, and the first frame connected to the second frame by a ball frame, OIS suspension coil, SMA frame, or piezoelectric frame;

and

a driving member arranged to provide a driving force to cause relative movement between the second frame and the first frame in at least one direction such that the adjustable lens is subjected to a squeezing action;

the driving part includes:

a first moving unit provided on the first frame and/or the second frame for providing a driving force to cause a relative movement between the first frame and the second frame in a first direction; and

a second moving unit provided on the first frame and/or the second frame for providing a driving force to cause a relative movement between the first frame and the second frame in a second direction;

the relative movement includes movement in a first direction parallel to the optical axis direction, a second direction perpendicular to the optical axis direction, a third direction forming an oblique angle with the optical axis direction, and/or a circumferential direction around the optical axis direction; and the sealing component is arranged between the adjustable focusing lens and the first lens group and/or between the adjustable focusing lens and the second lens group, and the sealing component adopts an adhesive material with the surface reflectivity less than 5%.

2. The split lens of claim 1, wherein the split lens further comprises:

a rigid member which is provided between the adjustable-focus lens and the first lens group or the second lens group and whose longitudinal center line substantially coincides with the optical axis, and which is movable in the optical axis direction upon relative movement between the first frame and the second frame.

3. The split lens of claim 2, wherein the adjustable focus lens comprises:

a first rigid portion disposed around the closed cavity; and

4. A split lens according to claim 3, wherein the first rigid portion and/or the second rigid portion is made of a glass material and/or the deformable light transmissive portion is made of an elastomeric material or a light transmissive liquid material, the elastomeric material comprising a silicone gel or a gel.

5. The split lens according to claim 4, wherein an adhesive region is provided on an outer side of the first rigid portion, the adhesive region being provided with a light-transmitting adhesive material, the adjustable-focus lens being adhered to the first lens group or the second lens group adjacent thereto by the light-transmitting adhesive material.

6. The split lens according to claim 2, wherein the rigid member is provided with:

a clamping portion configured to perform a clamping operation; and/or

And a support portion supported on the second frame.

7. The split lens according to claim 6, wherein the rigid member is provided with at least 3 supporting portions uniformly arranged along a circumferential direction thereof, and/or the marker portion includes an information feature portion recording at least production information of the rigid member, and/or the clip portion is provided at a side of the rigid member and has a straight-side section having a length of not less than 0.3mm.

8. The split lens of claim 7, wherein the rigid component is provided with at least 4 clips uniformly arranged along a side of the rigid component, and each clip has a straight edge section of substantially 0.600mm in length.

9. The split lens of claim 2, wherein the rigid member is connected to a side of the adjustable focus lens or is integrally formed with the second frame.

10. The split lens of claim 1, wherein the adjustable focus lens comprises:

11. The split lens according to claim 10, wherein the outer structure and/or the rigid light-transmitting portion is made of a rigid material comprising glass or plastic and/or the deformable light-transmitting portion is made of an elastomeric material comprising a silicone or gel or a light-transmitting liquid material and/or the structural region is connected to the first or second lens group by an adhesive material.

12. The split lens according to claim 11, wherein a surface reflectance of the outer structure portion is < 5%, and/or a surface reflectance of the adhesive material is < 5%.

13. The split lens of claim 10, wherein a first side bonding material and a second side bonding material are disposed between the adjustable lens and the adjacent lens group, the first side bonding material being for connecting an outer side of the adjustable lens proximate the optical zone, the second side bonding material being disposed on an outermost side of the adjustable lens for connecting the adjacent lens group.

14. The split lens of claim 13, wherein the second side bonding material has a surface reflectivity of < 5%.

15. The split lens of claim 1, wherein the first and/or second moving unit is a coil magnet.

16. The split lens according to any one of claims 1-15, wherein the second frame is provided with side portions extending gradually from the bottom in an inclined manner toward the central axis direction of the second frame, and/or an assembly gap having a width in the range of 0.1-0.5mm is reserved between the second frame and the first lens group or the second lens group connected thereto.

17. The split lens according to any one of claims 1-15, wherein the split lens further comprises 3 support arms 120 ° apart from each other, which are connected to the first lens group or the second lens group to support them in a horizontal plane perpendicular to the optical axis direction.

18. The split lens according to claim 17, wherein the second frame is provided with bumps respectively corresponding to the connection of the 3 support arms, which are arranged to have a substantially flush height with each other after being connected with the 3 support arms.

19. The split lens of claim 18, wherein the bump is disposed 0.3-0.7mm higher than an outer surface of the first frame.

20. The split lens according to claim 1, wherein the first frame is provided with at least 3 ball grooves for accommodating balls, the ball grooves being provided with accommodating cavities larger than the balls.

21. The split lens according to any one of claims 1-14, wherein a housing of the split lens is provided with a stopper provided at an inner side surface of the housing for defining a movement position of the second frame.

22. The split lens according to any one of claims 1 to 14, wherein the split lens further comprises a light shielding member provided between the adjustable lens and a lens group located thereabove in a light entering direction of the adjustable lens for shielding light from entering an interior of the adjustable lens from a side portion of the adjustable lens.

23. The split lens according to claim 22, wherein the light shielding member is provided to extend outward from a lens barrel in a lens group located above the adjustable-focus lens, and a light shielding portion is provided on an outer side of the light shielding member to shield a gap between the lens group and the adjustable-focus lens through which light can pass.

24. The split lens of any of claims 1-14, wherein a lens of the plurality of lens groups that is nearest to the adjustable lens is provided with a glue spreading groove and a glue overflow groove, and an outer side of the glue overflow groove is provided with at least one notch having a recess for preventing adhesive material from overflowing outwardly to a side of the nearest lens.

25. The split lens of claim 24, wherein the depth of the recess ranges from 30-80um.

26. The split lens of any of claims 1-14, wherein the adjustable focus lens comprises a liquid lens that is a single-piece liquid lens or a multi-piece liquid lens group.

27. The utility model provides a module of making a video recording, its characterized in that, the module of making a video recording includes:

the split lens of any of claims 1-26, disposed on a photosensitive path of the photosensitive unit.

28. An electronic device comprising the camera module of claim 27.