CN114509855B

CN114509855B - Focal length adjusting structure of lens, lens and terminal

Info

Publication number: CN114509855B
Application number: CN202011289621.8A
Authority: CN
Inventors: 陈朝喜
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2024-04-30
Anticipated expiration: 2040-11-17
Also published as: CN114509855A

Abstract

The present disclosure relates to a focal length adjusting structure of a lens, a lens and a terminal, wherein the focal length adjusting structure comprises at least one moving component and a first lens matched with the moving component and used for adjusting focal length, the moving component comprises a plurality of moving parts and a moving track matched with the moving parts, one of the moving parts and the moving track is connected with the first lens, and the first lens moves along an optical axis of light passing through the first lens through the movement of the moving parts along the moving track. The focal length adjusting structure has fewer structural parts and is easy to assemble and maintain; only set up a first lens for adjusting the focus, lens quantity is less, and the space occupies less for be provided with the camera lens of this focus adjustment structure and set up the size at the terminal of above-mentioned camera lens less, experience better. In addition, in the focal length adjusting structure, the focal length can be adjusted through the movement of the first lens, so that the focal length can be adjusted randomly, the focal length is adjusted smoothly, and the user experience is good.

Description

Focal length adjusting structure of lens, lens and terminal

Technical Field

The disclosure relates to the technical field of terminals, and in particular relates to a focal length adjusting structure of a lens, the lens and a terminal.

Background

The focus adjustment structure of camera lens generally includes a plurality of lenses that are used for zooming, carries out the adjustment of different selections and combination realization focus through a plurality of lenses, in this focus adjustment structure, owing to set up a plurality of lenses, leads to the structure more, equipment and maintenance are all inconvenient to occupation space is great, influences the overall dimension of camera lens, thereby leads to the terminal size that is provided with this camera lens great, uses and experiences inadequately. In addition, because the focal length adjustment structure is the adjustment of the focal length realized by the combination of different lenses in the plurality of lenses, the focal length cannot be smoothly adjusted, random zooming cannot be realized, and the user experience is poor.

Disclosure of Invention

In order to overcome the problems in the related art, the present disclosure provides a focal length adjustment structure of a lens, and a terminal.

According to a first aspect of embodiments of the present disclosure, there is provided a focal length adjustment structure of a lens, the focal length adjustment structure including at least one moving component and a first lens matched with the moving component for adjusting a focal length, the moving component including a plurality of moving pieces and a moving track matched with the moving pieces, the first lens being connected with the moving pieces or the moving track;

And the first lens moves along the optical axis of the light passing through the first lens by the movement of the moving piece along the movement track.

Optionally, the moving member includes a ball, the moving track includes a rolling groove matched with the ball, an extending direction of the rolling groove is parallel to a direction of the optical axis, and the ball rolls along the extending direction of the rolling groove, so that the first lens moves along the optical axis of the light passing through the first lens.

Optionally, the focal length adjusting structure includes a mounting structure, the first lens and the ball are connected through the mounting structure, wherein the first lens is mounted on the mounting structure, the mounting structure is configured as a square structure, and a plurality of balls are disposed on the mounting structure.

Optionally, the moving piece includes a sliding rod, the moving track includes a sliding groove matched with the sliding rod, an extending direction of the sliding groove is parallel to a direction of the optical axis, and the sliding rod moves the first lens along the optical axis of the light passing through the first lens by sliding along the extending direction of the sliding groove.

Optionally, the focal length adjustment structure includes mounting structure, first lens with the moving part passes through mounting structure links to each other, wherein, first lens install in mounting structure, mounting structure's opposite sides sets up two respectively the slide bar, the extending direction of slide bar with the extending direction of spout is the same, the slide bar card is gone into in the sliding tray.

Optionally, the plurality of moving parts are arranged in a central symmetry with respect to the center of the first lens.

Optionally, the moving member is configured as a hard rubber structural member; and/or the number of the groups of groups,

A lubrication layer is arranged between the moving track and the moving piece.

Optionally, a damping structure is disposed at an end of the movement track in the extending direction, and the damping structure is configured to provide resistance to continued movement of the moving member when the moving member moves from a position away from the damping structure to a position where the damping structure is located and contacts the damping structure.

Optionally, the movement track comprises a damping layer, which constitutes a contact surface of the movement track for contacting the moving part.

Optionally, the focal length adjusting structure includes a fixed support, the moving track is connected to the fixed support, and the moving member is connected to the first lens.

Optionally, the focal length adjusting structure includes a first magnetic structure group and a first conductive coil group matched with the first magnetic structure group, one of the moving piece and the moving track is connected with the first magnetic structure group, and a magnetic field formed by the first magnetic structure group is matched with a magnetic field formed by the first conductive coil, so that the moving piece moves along the moving track.

Optionally, the focal length adjusting structure includes a mounting structure, the mounting structure is used for mounting the moving part, the first magnetic structure group and the first lens, so that the first magnetic structure group is connected with the moving part through the mounting structure, the first lens the mounting structure is connected with the moving part, the mounting structure, the moving part, the first lens and the first magnetic structure group are used for forming a moving assembly, and the first conductive coil group is set according to the quality of the moving assembly.

According to a second aspect of embodiments of the present disclosure, there is provided a lens comprising a focus adjustment structure as described in the first aspect.

Optionally, the lens further comprises a light sensor and at least one second lens, wherein the first lens of the focal length adjusting structure is located between the light sensor and the second lens, and the second lens is used for controlling the transmission of the light rays passing through the second lens to the position where the light sensor is located.

According to a third aspect of embodiments of the present disclosure, there is provided a terminal comprising a center frame and a lens according to the second aspect, the lens being mounted to the center frame.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: in the focal length adjusting structure, only one first lens for adjusting the focal length can be arranged, and the first lens can move along the optical axis of light passing through the first lens by the mutual movement of the moving part and the moving track, so that the focal length can be adjusted. The focal length adjusting structure has fewer structural parts and is easy to assemble and maintain; only set up a first lens for adjusting the focus, lens quantity is less, and the space occupies less for be provided with the camera lens of this focus adjustment structure and set up the size at the terminal of above-mentioned camera lens less, experience better. In addition, in the focal length adjusting structure, the focal length can be adjusted through the movement of the first lens, so that the focal length can be adjusted randomly, the focal length is adjusted smoothly, and the user experience is good.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a partial top view of a first lens shown according to an exemplary embodiment.

Fig. 2 is a schematic structural view of a first mounting structure according to an exemplary embodiment.

Fig. 3 is a schematic diagram showing the cooperation of the moving member and the movement track (view along the optical axis projection direction) according to an exemplary embodiment.

Fig. 4 is a schematic diagram of light transmission of a lens shown according to an exemplary embodiment.

Fig. 5 is a partial top view of a second lens shown according to an exemplary embodiment.

Fig. 6 is a schematic structural view of a second mounting structure according to an exemplary embodiment.

Fig. 7 is a schematic diagram showing the cooperation of the moving member and the movement track (view along the optical axis projection direction) according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.

Based on the above-mentioned circumstances, the present disclosure provides a focal length adjustment structure of a lens, in which only one first lens for adjusting a focal length may be provided, and the first lens is moved along an optical axis of a light passing through the first lens by a mutual movement of a moving member and a movement track, so as to adjust the focal length. The focal length adjusting structure has fewer structural parts and is easy to assemble and maintain; only set up a first lens for adjusting the focus, lens quantity is less, and the space occupies less for be provided with the camera lens of this focus adjustment structure and set up the size at the terminal of above-mentioned camera lens less, experience better. In addition, in the focal length adjusting structure, the focal length can be adjusted through the movement of the first lens, so that the focal length can be adjusted randomly, the focal length is adjusted smoothly, and the user experience is good.

In one exemplary embodiment, a focus adjustment structure of a lens, such as a lens of a camera, a lens of a video camera, or a lens of a projector, is provided. 1-7, the focal length adjusting structure comprises at least one moving component and a first lens 3 matched with the moving component and used for adjusting focal length, wherein the first lens 3 is a convex lens or a concave lens.

The moving assembly comprises a plurality of moving parts 1 and a moving track 2 matched with the moving parts 1, wherein each moving part 1 is matched with one moving track 2, so that the moving parts 1 move along the corresponding moving track 2. The provision of a plurality of moving members 1 increases the impact area of the moving members 1 with the moving rail 2, reducing the impact of the impact on the shake of the first lens 3. For example, when the lens is the lens of a camera, the image formed by the camera can be better prevented from shaking, and the imaging quality is improved. In addition, the plurality of moving parts 1 can reduce the ageing and wearing speed of each moving part 1, so that the first lens 3 is prevented from being eccentric to a certain extent, the first lens 3 can still move stably, and the stability of focal length adjustment is ensured. For example, when the lens is a camera lens, deformation of an image formed by the camera can be better avoided, stability of a focusing process can be improved, and shooting efficiency and imaging quality can be improved.

One of the moving member 1 and the moving track 2 is connected with the first lens 3, and the focal length adjusting structure enables the first lens 3 to move along the optical axis 11 of the light passing through the first lens 3 by moving the moving member 1 along the moving track 2, so as to adjust the focal length of the lens.

That is, the focus adjustment structure includes two schemes: the scheme 1, the moving piece is connected with the first lens, and the first lens moves along the optical axis through the movement of the moving piece relative to the movement track; and 2, the movement track is connected with the first lens, and the first lens moves along the optical axis through the movement of the movement track relative to the movement piece. In the two schemes, the movement of the first lens is realized through the relative movement of the moving piece and the movement track.

In one example, the lens is a periscope lens, also known as an internal zoom lens, of a cell phone. Referring to fig. 5-7, a moving component and a first lens 3 matched with the moving component are arranged in the lens, and the first lens 3 is a convex lens. The motion assembly includes four moving parts 1, and four moving parts 1 are all connected with first lens 3, "link" here is in order to make moving part 1 drive first lens 3 motion, including moving part 1 and first lens 3 through other structure realization connection, first lens 3 installs on mounting structure 4, and moving part 1 also installs on mounting structure 4, and at this moment, moving part 1 and first lens 3 are realized linking to each other through this mounting structure 4. Each moving element 1 is provided with a moving track 2, or the moving elements 1 moving in the same straight direction share a moving track 2. The moving part 1 moves along the moving track 2 to drive the first lens 3 to move along the optical axis 11 of the light passing through the first lens 3, so as to realize the effect of adjusting the focal length of the lens.

It should be noted that, when the lens includes a plurality of moving components, the type of the first lens 3 that is matched with each moving component may be the same or different.

In one example (the example is not shown in the figure), the lens is also a periscope lens, two moving components and a first lens matched with the moving components are arranged in the lens, wherein the first lens matched with the first moving component in the two moving components is a convex lens, the first lens matched with the second moving component in the two moving components is a concave lens, and the positions of the convex lens and the concave lens are respectively adjusted by arranging the two moving components, so that the adjustment range of the focal length is improved, and the adaptability of the lens is further improved.

In one example (the example is not shown in the figure), the lens is also a periscope lens, two moving components and a first lens matched with the moving components are arranged in the lens, wherein the first lens matched with the first moving component in the two moving components is a convex lens, the first lens matched with the second moving component in the two moving components is also a convex lens, and the positions of the two convex lenses are respectively adjusted by arranging the two moving components, so that the adjustment range of the focal length is improved, and the adaptability of the lens is further improved.

The focus adjusting structure is provided with a plurality of moving parts, so that the impact area of the moving parts and the moving track is increased, and the impact on the shake of the first lens caused by impact is reduced; in addition, the ageing and wearing speed of each moving part can be reduced by the plurality of moving parts, the first lens is prevented from being eccentric to a certain extent, the first lens can still move stably, and the stability of focal length adjustment is ensured.

In an exemplary embodiment, there is provided a focus adjustment structure of a lens, in which a plurality of moving members 1 are arranged in central symmetry with respect to the center of a first lens 3, as shown with reference to fig. 1 to 7. The abrasion degree and the aging degree generated by each moving part 1 are relatively similar, even if the moving parts 1 age and abrade, the first lens 3 is eccentric, the first lens 3 can still move stably, and the focal length adjustment stability is ensured.

For example, when the lens is a lens of a camera, since the plurality of moving members 1 are arranged in a central symmetry manner with respect to the center of the first lens 3, deformation of an image formed by the camera can be better avoided, and stability of a focusing process and photographing efficiency and imaging quality can be improved.

In one exemplary embodiment, in order to reduce friction between the moving member and the moving rail and thus to avoid abrasion and aging of the moving member and the moving rail, there is provided a focus adjustment structure of a lens, as shown with reference to fig. 1 to 7, in which the moving member 1 is constructed as a hard rubber structural member; and/or a lubrication layer (not shown in the figure) is provided between the moving rail 2 and the moving member 1.

For example, the moving member 1 is a hard rubber structural member made of hard rubber, so as to reduce friction between the moving member 1 and the moving track 2, and better avoid abrasion and aging of the moving member 1 and the moving track 2.

As another example, the surface of the moving rail 2 is provided with a lubricating layer formed of lubricating oil or graphite powder to reduce friction between the moving member 1 and the moving rail 2, and to better avoid wear and aging of the moving member 1 and the moving rail 2.

As another example, the surface of the moving member 1 is provided with a lubricating layer formed of lubricating oil or graphite powder to reduce friction between the moving member 1 and the moving rail 2, and to better avoid wear and aging of the moving member 1 and the moving rail 2.

As another example, the surfaces of the moving rail 2 and the moving member 1 are provided with a lubricating layer to better reduce friction between the moving member 1 and the moving rail 2 and to better avoid wear and aging of the moving member 1 and the moving rail 2.

For another example, the moving part 1 is a hard rubber structural part made of hard rubber, and the surfaces of the moving track 2 and the moving part 1 are provided with lubricating layers so as to better reduce friction between the moving part 1 and the moving track 2 and better avoid abrasion and ageing of the moving part 1 and the moving track 2.

In an exemplary embodiment, a focal length adjusting structure of a lens is provided, and referring to fig. 1-7, in the focal length adjusting structure, a damping structure (not shown) is disposed at an end portion of a moving track 2 in an extending direction, and when a moving member 1 moves from a position away from the damping structure to a position where the damping structure is located and contacts with the damping structure, the damping structure is used to provide resistance to continued movement of the moving member 1, so that a violent impact between the moving member 1 and the end portion of the moving track 2 is avoided, shake of a first lens 3 due to the impact is reduced, and abrasion and aging of the moving member 1 and the moving track 2 due to the impact are reduced.

In one example, the damping structure is a rubber structure, and the end of the movement track 2 in the extending direction is provided with the rubber structure, and the rubber structure is fixedly connected with the end of the movement track 2 so as to prevent the rubber structure from falling off from the movement track 2. When the moving part 1 moves from the middle position of the moving track 2 to the end position of the moving track 2, the rubber structure is compressed by the moving part 1 after the moving part 1 contacts with the rubber structure due to certain elasticity, so that the rubber structure is elastically deformed, and a certain resistance can be provided for the moving part 1 by the rubber structure, so that the violent impact between the moving part 1 and the end of the moving track 2 is avoided.

In one example, the damping structure is a spring structure, and the end of the moving track 2 in the extending direction is provided with the spring structure, and the spring structure is fixedly connected with the end of the moving track 2 so as to prevent the spring structure from falling off from the moving track 2. When the moving part 1 moves from the middle position of the moving track 2 to the end position of the moving track 2, due to certain elasticity of the spring structure, after the moving part 1 contacts with the spring structure, the moving part 1 compresses the spring structure, so that the spring structure elastically deforms, and the spring structure can provide certain resistance for the moving part 1, so that violent impact between the moving part 1 and the end of the moving track 2 is avoided.

In an exemplary embodiment, a focus adjustment structure of a lens is provided, and referring to fig. 1 to 7, in the focus adjustment structure, a moving track 2 includes a damping layer (not shown in the drawings), and the damping layer forms a contact surface of the moving track 2 for contacting with a moving member 1, so as to avoid hard contact between the moving member 1 and the moving track 2, and to better avoid abrasion of the moving track and shake of a first lens 3 caused by impact therebetween.

The damping layer comprises a foam layer, a silica gel layer and other structural layers with certain elasticity.

In one example, the movement track 2 comprises a foam layer of a certain thickness, for example a thickness of 1 mm. The foam layer forms the surface of the movement track 2 which is intended to be in contact with the movement element 1, so that hard contact between the movement element 1 and the movement track 2 is avoided.

In one example, the movement track 2 comprises a layer of silicone with a thickness, for example 0.5 mm. The silicone layer forms the surface of the movement track 2 which is intended to be in contact with the movement element 1, so that hard contact between the movement element 1 and the movement track 2 is avoided.

In an exemplary embodiment, a focal length adjustment structure of a lens is provided, and referring to fig. 1 to 4, in the focal length adjustment structure, a moving member 1 includes a ball, the moving rail 2 includes a rolling groove matched with the ball, an extending direction of the rolling groove is parallel to a direction of the optical axis 11, and the ball rolls along the extending direction of the rolling groove, so that the first lens 3 moves along the optical axis 11 of the light passing through the first lens 3.

In this focus adjustment structure, through the cooperation in a plurality of balls and corresponding rolling groove for the motion of first lens 3 is more steady, reliable, and can reduce the impact between moving part 1 and the motion track 2 to a certain extent, further reduce ageing and the wearing and tearing speed of every moving part 1, avoid first lens 3 to appear decentering to a certain extent, still can make first lens 3 steady motion, ensure focus adjustment's stationarity.

In addition, in the focus adjustment structure, the balls and the rolling grooves can slide relatively through the prior art, and detailed description is omitted here.

In one example, referring to fig. 1 to 4, the focal length adjusting structure further includes a mounting structure 4, and the first lens 3 and the moving member 1 are connected through the mounting structure 4, wherein the first lens 3 is mounted on the mounting structure 4, and the mounting structure 4 is configured as a square structure, which may be a cuboid structure or a square structure. Balls are respectively arranged at eight vertex angle positions of the mounting structure 4, wherein two balls moving along the same straight line direction can share one rolling groove. In the focal length adjusting structure, the first lens 3 stably moves along the optical axis 11 by rolling the eight balls along the corresponding rolling grooves, so that the effect of adjusting the focal length of the lens is realized.

In one example (this example is not shown in the figures), the focal length adjustment structure further includes a mounting structure through which the first lens is mounted and the moving member is connected, wherein the mounting structure is configured as a square structure, which may be a rectangular parallelepiped structure or a square structure. The number of the balls is four, the four balls are respectively arranged at the geometric centers of the four sides of the square structure, each side is parallel to the optical axis, and in the focus adjustment structure, the first lens can stably move along the optical axis by rolling of the four balls along the corresponding rolling grooves, so that the effect of adjusting the focus of the lens is realized.

It should be noted that the mounting structure may be other regular cube structures, such as an octahedral structure or a spherical structure.

In one example (this example is not shown in the figures), the mounting structure is an octahedral structure with two opposite sides perpendicular to the optical axis, and the optical axis passes through the geometric centers of the sides. The other side faces of the octahedral structure are parallel to the optical axis, and the geometric centers of the other side faces are respectively provided with a ball, and each ball is provided with a rolling groove. In the focal length adjusting structure, the first lens stably moves along the optical axis by the rolling of the six balls along the corresponding rolling grooves, so that the effect of adjusting the focal length of the lens is realized.

In one example (this example is not shown in the figures), the mounting structure is a spherical structure, the center of which coincides with the center of the first lens, the spherical structure being arranged axisymmetrically with respect to the optical axis, four balls being arranged on the spherical structure, the four balls also being arranged axisymmetrically with respect to the optical axis, each ball being provided with a rolling groove. In the focal length adjusting structure, the first lens stably moves along the optical axis by the rolling of the six balls along the corresponding rolling grooves, so that the effect of adjusting the focal length of the lens is realized.

In an exemplary embodiment, a focal length adjustment structure of a lens is provided, and referring to fig. 4 to 7, in the focal length adjustment structure, a moving member 1 includes a slide rod, a moving rail 2 includes a slide groove engaged with the slide rod, an extending direction of the slide groove is parallel to a direction in which an optical axis 11 is located, and the slide rod moves a first lens 3 along the optical axis 11 of a light passing through the first lens 3 by sliding along the extending direction of the slide groove.

In this focus adjustment structure, through the cooperation of a plurality of slide bars and corresponding sliding tray for the motion of first lens 3 is more steady, reliable, and can reduce the impact between moving part 1 and the motion track 2 to a certain extent, further reduce ageing and the wearing and tearing speed of every moving part 1, avoid first lens 3 to appear decentering to a certain extent, still can make first lens 3 steady motion, ensure focus adjustment's stationarity.

In addition, in the focal length adjusting structure, the sliding rod and the sliding groove can slide relatively through the prior art, and detailed description is omitted here.

In one example (not shown in the figures), the focal length adjustment structure comprises a mounting structure, the first lens and the moving member are connected through the mounting structure, wherein the first lens is mounted on the mounting structure, two sliding rods are respectively arranged on two opposite sides of the mounting structure, the extending direction of the sliding rods is the same as that of the sliding grooves, and the sliding rods are clamped into the sliding grooves. In the focal length adjusting structure, the first lens stably moves along the optical axis by sliding the four sliding rods along the corresponding sliding grooves, so that the effect of adjusting the focal length of the lens is achieved.

In one example, referring to fig. 4-7, the focal length adjusting structure includes a mounting structure 4, the first lens 3 and the moving member 1 are connected through the mounting structure 4, wherein the first lens 3 is mounted on the mounting structure 4, four edges of the mounting structure 4 parallel to the optical axis 11 are respectively provided with a sliding rod, an extending direction of the sliding rod is the same as an extending direction of the sliding groove, and the sliding rod is clamped into the sliding groove. In the focal length adjusting structure, the first lens 3 can stably move along the optical axis 11 by sliding the four sliding rods along the corresponding sliding grooves, so that the effect of adjusting the focal length of the lens is realized.

The mounting structure in this embodiment is similar to the mounting structure in the embodiment in which the moving member is a ball, but may be a regular cube structure.

In one example (this example is not shown in the figures), the mounting structure is an octahedral structure with two opposite sides perpendicular to the optical axis, and the optical axis passes through the geometric centers of the sides. The other side faces of the octahedral structure are parallel to the optical axis, a sliding rod is arranged on each of the other side faces, each sliding rod passes through the geometric center of the corresponding side face and is parallel to the optical axis, and each sliding rod is provided with a sliding groove. In the focal length adjusting structure, the first lens stably moves along the optical axis by sliding the six sliding rods along the corresponding sliding grooves, so that the effect of adjusting the focal length of the lens is achieved.

In an exemplary embodiment, a focus adjustment structure of a lens is provided, which includes a fixed bracket 5, and a moving rail 2 is connected to the fixed bracket 5, as shown with reference to fig. 1 to 7. The fixing bracket 5 may have the same structure as the housing of the lens, may be a part of the housing, or may have another structure connected to the housing. The moving part 1 is connected with the first lens 3, the moving part 1 is used for driving the first lens 3 to move relative to the fixed support 5, and the focal length adjusting structure improves overall stability by arranging the fixed support 5.

In one example (this example is not shown in the drawings), the focus adjustment structure includes a fixed bracket configured as a square frame, and rolling grooves are fixedly provided on four edges of the square frame parallel to the optical axis, each rolling groove being provided with two balls. The focal length adjusting structure further comprises a mounting structure, the first lens is mounted on the mounting structure, the mounting structure is a square structure, and the square structure is matched with the square frame. Balls are respectively arranged at eight vertex angle positions of the mounting structure, wherein two balls with connecting lines parallel to the optical axis share one rolling groove. In this focus adjustment structure, the roll through the ball along corresponding rolling groove makes the steady motion of first lens along the optical axis, realizes the effect of adjusting the focus of camera lens, and overall structure is comparatively stable, and the reliability is higher.

In one example, referring to fig. 4 to 7, the focus adjustment structure includes a fixing bracket 5, the fixing bracket 5 being configured as a square frame, four edges of the square frame parallel to the optical axis being fixedly provided with sliding grooves, each of which is provided with a sliding rod. The focus adjustment structure includes a mounting structure 4, the mounting structure 4 being configured as a square structure, which is adapted to the above-mentioned square frame. The first lens 3 is installed in the installation structure 4, the positions of four edges of the installation structure 4 parallel to the optical axis are respectively provided with a sliding rod, the extending direction of the sliding rods is the same as that of the sliding grooves, the sliding rods are clamped into the sliding grooves, and each sliding rod is provided with a sliding groove. In the focal length adjusting structure, the first lens 3 moves stably along the optical axis 11 by sliding of the four sliding rods along the corresponding sliding grooves, the effect of adjusting the focal length of the lens is achieved, and the overall structure is stable and high in reliability.

It should be noted that, when the focal length adjusting structure includes a plurality of first lenses for adjusting focal length, a plurality of mounting structures may be correspondingly disposed in the fixing support.

In one example (this example is not shown in the drawings), the focus adjustment structure includes a fixed bracket configured as a square frame on which rolling grooves are fixedly provided on four edges parallel to the optical axis, each rolling groove being configured with four balls. The focal length adjusting structure further comprises two mounting structures, a first lens is mounted in each mounting structure, and the mounting structures are square structures which are matched with the square frames. Balls are respectively arranged at eight vertex angle positions of the mounting structure, wherein four balls which are parallel to the optical axis and connected with the line share one rolling groove in the two mounting structures. In this focus adjustment structure, the roll through the ball along corresponding rolling groove makes the steady motion of first lens along the optical axis, realizes the effect of adjusting the focus of camera lens, and overall structure is comparatively stable, and the reliability is higher. In addition, due to the two first lenses, more accurate focal length adjustment and larger range focal length adjustment can be realized, and the adaptability of the focal length adjustment structure is improved.

In an exemplary embodiment, a focal length adjusting structure of a lens is provided, and referring to fig. 1-7, the focal length adjusting structure further includes a first magnetic structure group 6 and a first conductive coil group 7 matched with the first magnetic structure group 6, one of the moving member 1 and the moving track 2 is connected with the first magnetic structure group 6, and a magnetic field formed by the first magnetic structure group 6 is matched with a magnetic field formed by the first conductive coil, so that the moving member 1 moves along the moving track 2.

The focal length adjusting structure comprises a mounting structure 4, wherein the mounting structure 4 is used for mounting the moving part 1, the first magnetic structure group 6 and the first lens 3, the first magnetic structure group 6 is connected with the moving part 1 through the mounting structure 4, the first lens 3 is connected with the moving part 1 through the mounting structure 4, and the mounting structure 4, the moving part 1, the first lens 3 and the first magnetic structure group 6 are used for forming a moving assembly, and the first conductive coil group 7 is arranged according to the mass of the moving assembly.

For example, the greater the mass of the moving assembly, the greater the number of conductive coils in the first set of conductive coils 7; and/or the greater the mass of the moving assembly, the more turns the conductive coils of the first set 7 of conductive coils are wound around; and/or the greater the mass of the moving assembly, the greater the current value of the current through the conductive coils in the first set of conductive coils 7.

In one example, the mass of the moving component is a, the first magnetic structure group 6 includes two magnets which are oppositely arranged, the first conductive coil group 7 includes two conductive coils which are respectively matched with the two magnets, the coil winding number of each conductive coil is a, the moving part 1 is connected with the first magnetic structure group 6, the magnets move through the matching between the magnetic field formed by the electrified two conductive coils and the magnetic field formed by the two magnets, and the magnets move to drive the moving part 1 connected with the magnets to move, so that the moving part 1 moves along the moving track 2. The "the magnetic field formed by energizing the two conductive coils and the magnetic field formed by the two magnets cooperate to enable the magnets to move" can be realized by the prior art, and details are not repeated here.

In one example, the moving component has a mass B, where B is greater than a, the first magnetic structure group 6 includes two magnets disposed opposite to each other, and the first conductive coil group 7 includes four conductive coils respectively engaged with the two magnets, and each conductive coil has a coil winding number of a, where each magnet is configured with two conductive coils. The moving part 1 is connected with the first magnetic structure group 6, the magnets move through the cooperation between the magnetic fields formed by the electrified four conductive coils and the magnetic fields formed by the two magnets, and the magnet moves to drive the moving part 1 connected with the magnet to move, so that the moving part 1 moves along the moving track 2.

In one example, the moving component has a mass B, where B is greater than a, the first magnetic structure group 6 includes two magnets disposed opposite to each other, and the first conductive coil group 7 includes two conductive coils respectively engaged with the two magnets, and each conductive coil has a coil winding number B, where B is greater than a. The moving part 1 is connected with the first magnetic structure group 6, the magnet is moved by the cooperation between the magnetic field formed by the electrified two conductive coils and the magnetic field formed by the two magnets, and the magnet is moved to drive the moving part 1 connected with the magnet to move, so that the moving part 1 moves along the moving track 2.

The disclosure also provides a lens, which comprises the focal length adjusting structure, so that the lens has the beneficial effects corresponding to the focal length adjusting structure, the focal length adjusting effect and the imaging effect of the lens are improved, and meanwhile, the service life of the lens can be prolonged.

In one example, referring to fig. 1-4, the lens is a periscope lens mounted on a mobile phone, the lens comprising a focus adjustment structure, further comprising a flexible circuit board 13, a light sensor 12 and at least one second lens 8, wherein the light sensor 12 is for example an RGB sensor for detecting RGB data. The first lens 3 of the focal length adjusting structure is located between the light sensor 12 and the second lens 8, and the second lens 8 is used for controlling the light passing through the second lens 8 to be transmitted to the position where the light sensor 12 is located. The optical axis 11 in the present application refers to the optical axis 11 of the light passing through the second lens 8.

The lens further comprises a second conductive coil group 10 and a second magnetic structure group 9, and the second conductive coil group 10 and the second magnetic structure group 9 are matched to drive the second lens 8 to rotate so as to adjust the transmission direction of light. The second mirror 8 is for example a prism or a reflecting mirror.

The focal length adjusting structure comprises a fixed support 5, a mounting structure 4, a first lens 3, a first magnetic structure group 6 and a first conductive coil group 7, wherein the first lens 3 is mounted in the mounting structure 4, and a flexible circuit board 13 is fixed through the fixed support 5. The fixed support 5 is configured as a square support, the mounting structure 4 is configured as a square structure, the square structure is matched with the square support, rolling grooves are formed in the positions of edges of the fixed support 5 parallel to the optical axis 11, and balls are arranged at the vertexes of the mounting structure 4. Wherein two balls connected in parallel with the optical axis 11 share a rolling groove.

The first lens 3 is used for adjusting the focal length of the lens, and the first lens 3 is, for example, a convex lens or a concave lens.

The first magnetic structure group 6 includes first magnetic structure and second magnetic structure that set up along optical axis 11 direction interval, and first magnetic structure and second magnetic structure are located the opposite both sides of mounting structure 4 respectively, and first magnetic structure and second magnetic structure are axisymmetric setting about optical axis 11, and first magnetic structure includes two first magnets that range upon range of setting along first direction, and second magnetic structure includes two second magnets that range upon range of setting along first direction, and first magnet and second magnet' S N utmost point and S utmost point all set up along optical axis 11 direction.

The first conductive coil set 7 is located on the flexible circuit board 13, and a detection circuit, such as a hall sensor detection circuit, is further disposed on the flexible circuit board 13. The first conductive coil group 7 includes a first conductive coil located outside the first magnetic structure for providing a driving force for the outermost first magnet to move in the direction of the optical axis 11, and a second conductive coil located outside the second magnetic structure for providing a driving force for the outermost second magnet to move in the direction of the optical axis 11.

In the focal length adjusting structure, the first conductive coil interacts with the first magnet located at the outermost side, so that the first magnetic structure moves along the optical axis 11, meanwhile, the second conductive coil interacts with the second magnet located at the outermost side, so that the second magnetic structure moves along the same direction as the moving direction of the first magnetic structure, the first magnetic structure and the second magnetic structure move along the same direction, the mounting structure 4 is driven to move, the mounting structure 4 drives the first lens 3 to move along the optical axis 11, and the purpose of adjusting focal length is achieved.

The focus adjusting structure is provided with the plurality of moving parts 1, and the impact area of the moving parts 1 and the moving track 2 is increased by arranging the plurality of moving parts 1, so that the impact on the shake of the first lens 3 caused by impact is reduced; in addition, the plurality of moving parts 1 can reduce the ageing and wearing speed of each moving part 1, so that the first lens 3 is prevented from being eccentric to a certain extent, the first lens 3 can still move stably, the focal length adjustment stability is ensured, and good ground wire type adjustment is realized.

In addition, because two first magnets are arranged, the first magnet positioned at the inner side can avoid the influence of the second magnetic structure on the magnetic field of the first magnet positioned at the outer side, and similarly, the second magnet positioned at the inner side can avoid the influence of the first magnetic structure on the magnetic field of the second magnet positioned at the outer side. Therefore, the focal length adjusting structure can generate a reliable and stable driving force for driving the first lens 3 to move along the optical axis 11, so as to realize focal length adjustment. The focus adjustment structure can better avoid the waste of electric power resources to a certain extent, and can also better avoid the abrasion between the structures which do mutual movement, ensure the stability of focus adjustment and prolong the service life of the focus adjustment structure.

The disclosure further provides a terminal, for example, a mobile phone, a notebook computer, a tablet computer, a camera and other terminals with shooting functions. The terminal includes the lens as described above, so that the terminal has an effect corresponding to the lens described above.

The terminal also comprises a middle frame for installing the lens so as to ensure the reliable fixing of the lens.

Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

1. A focal length adjusting structure of a lens, which is characterized by comprising at least one moving component and a first lens matched with the moving component and used for adjusting focal length, wherein the moving component comprises a plurality of moving pieces and a moving track matched with the moving pieces, and the first lens is connected with the moving pieces or the moving track;

Moving the first lens along the optical axis of the light passing through the first lens by the movement of the moving piece along the movement track;

The plurality of moving parts are arranged in a central symmetry mode relative to the center of the first lens.

2. The focus adjustment structure according to claim 1, wherein the moving member includes a ball, the moving track includes a rolling groove that cooperates with the ball, an extending direction of the rolling groove is parallel to a direction in which the optical axis is located, and the ball rolls along the extending direction of the rolling groove to move the first lens along the optical axis of the light passing through the first lens.

3. The focus adjustment structure according to claim 2, characterized in that the focus adjustment structure comprises a mounting structure through which the first lens and the balls are connected, wherein the first lens is mounted to the mounting structure, the mounting structure is configured as a square structure on which a plurality of the balls are provided.

4. The focus adjustment structure according to claim 1, wherein the moving member includes a slide rod, the moving rail includes a slide groove that is fitted to the slide rod, an extending direction of the slide groove is parallel to a direction in which the optical axis is located, and the slide rod moves the first lens along the optical axis of the light passing through the first lens by sliding along the extending direction of the slide groove.

5. The focus adjustment structure according to claim 4, characterized in that the focus adjustment structure comprises a mounting structure, the first lens and the moving member are connected through the mounting structure, wherein the first lens is mounted on the mounting structure, two sliding rods are respectively arranged on two opposite sides of the mounting structure, the extending direction of the sliding rods is the same as the extending direction of the sliding grooves, and the sliding rods are clamped into the sliding grooves.

6. The focus adjustment structure according to any one of claims 1 to 5, characterized in that,

The moving piece is constructed as a hard rubber structural piece; and/or the number of the groups of groups,

A lubrication layer is arranged between the moving track and the moving piece.

7. The focus adjustment structure according to any one of claims 1 to 5, wherein a damping structure is provided at an end of the movement track in an extending direction, the damping structure being adapted to provide a resistance to continued movement of the moving member when the moving member moves from a position away from the damping structure to a position where the damping structure is located and is in contact with the damping structure.

8. The focus adjustment structure according to any one of claims 1 to 5, characterized in that the movement track comprises a damping layer constituting a contact surface of the movement track for contact with the moving member.

9. The focus adjustment structure of any one of claims 1-5, wherein the focus adjustment structure comprises a fixed bracket, the movement track is connected to the fixed bracket, and the movement member is connected to the first lens.

10. The focus adjustment structure of any one of claims 1-5, wherein the focus adjustment structure comprises a first magnetic structure group and a first conductive coil group coupled to the first magnetic structure group, wherein one of the moving member and the moving track is coupled to the first magnetic structure group, and wherein a magnetic field formed by the first magnetic structure group is coupled to a magnetic field formed by the first conductive coil to move the moving member along the moving track.

11. The focus adjustment structure of claim 10, comprising a mounting structure for mounting the moving member, the first set of magnetic structures, and the first lens such that the first set of magnetic structures is coupled to the moving member by the mounting structure, the first lens is coupled to the moving member, the mounting structure, the moving member, the first lens, and the first set of magnetic structures are for forming a moving assembly, and the first set of conductive coils is configured according to a mass of the moving assembly.

12. A lens, characterized in that the lens comprises a focus adjustment structure as claimed in any one of claims 1-11.

13. The lens of claim 12, further comprising a light sensor and at least one second lens, wherein the first lens of the focus adjustment structure is positioned between the light sensor and the second lens, and wherein the second lens is configured to control transmission of light passing through the second lens to a location where the light sensor is positioned.

14. A terminal comprising a center frame and a lens according to claim 12 or 13, the lens being mounted to the center frame.