CN107135344B - Miniature optical zoom module - Google Patents
Miniature optical zoom module Download PDFInfo
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- CN107135344B CN107135344B CN201710451921.3A CN201710451921A CN107135344B CN 107135344 B CN107135344 B CN 107135344B CN 201710451921 A CN201710451921 A CN 201710451921A CN 107135344 B CN107135344 B CN 107135344B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/51—Housings
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Lens Barrels (AREA)
- Adjustment Of Camera Lenses (AREA)
Abstract
The invention relates to a micro optical zoom module, which comprises a base and a shell connected to the base, wherein the shell and the base enclose an accommodating space, and an opening is formed on a first surface of the shell. The lens module further comprises a movable lens assembly arranged in the accommodating space and opposite to the opening, a driving component used for driving the movable lens assembly to move along at least one direction of the optical axis direction and the direction vertical to the optical axis direction, and a fixed lens assembly fixed on the first surface of the shell. The lens group is divided into a movable part and an immovable part, zooming is realized through the movement of the movable part in the optical axis direction, anti-shake is realized through the movement of the movable part in the direction vertical to the optical axis, and the bearing weight of the driving part is reduced, so that the miniaturization is realized, and the whole camera is thinner.
Description
Technical Field
The invention relates to the technical field of optical imaging, in particular to a miniature optical zoom module.
Background
With the development of technology in recent years, wearable devices such as notebook computers, tablet computers, mobile phones or smart watches are gradually becoming thinner and smaller. In these devices, many of them need to use a micro camera, and in order to make the devices themselves thinner and lighter, higher requirements are also put forward on the micro camera. While high resolution is required on the one hand and smaller size is required on the other hand, an increase in resolution means that the size of the lens assembly will increase. At present, for the quality of imaging, miniature cameras are generally equipped with an optical zoom system. The optical zooming mode generally adopts a voice coil motor or a stepping motor to carry a lens group, and the zooming function is realized by moving the lens group. In order to achieve the power for driving the lens module, the motor for carrying the lens module has a larger volume. Along with the continuous increase of resolution ratio, the volume of the lens group inevitably becomes bigger and bigger, when the lens module is too big, the power consumed by the motor for carrying the lens to realize moving focusing and zooming also inevitably becomes bigger and bigger, and in addition, the thickness and the volume of the camera are further increased by the photoelectric elements such as the lens group, so that the volume of the whole camera is difficult to reduce.
Disclosure of Invention
In order to solve the above problems, the present invention provides a compact optical zoom module with a small volume and a small thickness.
The invention is realized by adopting the following scheme:
a miniature optical zoom module, comprising: a base; the shell is connected to the base, an accommodating space is enclosed by the shell and the base, and an opening is formed in the first surface of the shell; the movable lens assembly is arranged in the accommodating space and corresponds to the opening; a driving member disposed in the housing space for driving the movable lens assembly to move in at least one of an optical axis direction and a direction perpendicular to the optical axis direction; and a fixed lens assembly fixed to the first face of the housing.
Further, the fixed lens component comprises a second lens and a second lens seat used for supporting and protecting the second lens, and under the condition that the micro optical zoom module is still and the driving part is not electrified, the fixed lens component and the optical axis of the movable lens component coincide.
In one embodiment, the movable lens assembly includes a first lens and a first lens holder for fixing the first lens. The driving part includes: a circuit board fixed on the base; a focusing coil wound around the optical axis and fixed on the periphery of the first lens seat; a plurality of magnets disposed on the outer peripheral side of the focusing coil and opposed to the focusing coil with a space therebetween; a frame for holding the plurality of magnets; a plate spring for supporting the first mirror base suspension inside the frame and movable in the optical axis direction of the movable lens unit, the plate spring having an inner peripheral side connected to the mirror base and an outer peripheral side connected to the frame; and a plurality of linear springs extending in the optical axis direction, one end of which is connected to the base side and the other end of which is connected to the frame side, to support the frame suspension in a state of being movable in a direction perpendicular to the optical axis of the movable lens assembly. Wherein, be provided with on the circuit board with a plurality of anti-shake coils of a plurality of magnet spaced contraposition.
Furthermore, a light path changing mechanism is arranged on one side, close to the shot object, of the fixed lens assembly, the light path changing mechanism comprises a third lens seat, and a prism is connected to the third lens seat and used for refracting and reflecting light from the shot object to the fixed lens assembly.
Further, the prism is rotatably connected to the third lens base.
In another embodiment, the movable lens assembly includes a first lens and a first lens holder for fixing the first lens. The driving part includes: the circuit board is fixed on the base, and the optical axis of the movable lens assembly is parallel to the surface of the circuit board; a plurality of driving coils disposed on the circuit board and wound around a direction perpendicular to a surface of the circuit board; a plurality of magnets fixed on a surface of the first lens holder facing the circuit board, the plurality of magnets facing the plurality of driving coils with a space therebetween; and a plurality of linear springs extending in a direction perpendicular to the surface of the circuit board, one end of each linear spring being connected to the first mount side, and the other end of each linear spring being connected to the base side, for supporting the first mount suspension in a state of being movable in the optical axis direction of the movable lens module and in a direction perpendicular to the optical axis direction of the movable lens module.
Furthermore, still include a plurality of reeds of fixing on first mirror base, the reed is including being used for fixing fixed part on first mirror base and the elastic cantilever who extends out from the fixed part, the elastic cantilever extends outside first mirror base and is unsettled state, linear spring's one end with the elastic cantilever links to each other, and the other end is connected the circuit board.
Furthermore, the side surfaces of the first lens base, which are positioned on two sides of the optical axis, extend outwards to form a bearing part, and the two reeds are fixed on the two bearing parts respectively.
Furthermore, when viewed from the direction perpendicular to the circuit board, each bearing part is in a T shape, the wider end of each bearing part is positioned at the side far away from the first mirror seat, and the end part of the narrower end of each bearing part is connected with the side of the first mirror seat; the shape of the fixing part of the reed is the same as that of the bearing part and is fixed with the bearing part, and at least one part of the elastic cantilever extends out of the bearing part to be in a suspended state.
Further, the elastic cantilever is bent a plurality of times to extend in the direction of the optical axis and in the direction perpendicular to the optical axis, and both ends of the elastic cantilever are connected to the wider end and the narrower end of the fixing portion, respectively.
Compared with the prior art, the invention has the following beneficial effects:
the lens group is divided into the movable lens component and the fixed lens component, the focusing and zooming functions can be realized through the movement of the movable part in the optical axis direction, the anti-shake function can also be realized through the movement perpendicular to the optical axis direction, and the bearing weight of the driving part is reduced, so that the miniaturization, the light weight and the thin weight of the driving part are realized, the integral thickness of the camera is thinner, and the power consumption is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a first micro optical zoom module according to an embodiment of the present invention.
FIG. 2 is a schematic view of a magnet and a frame portion according to one embodiment.
Fig. 3 is a schematic structural diagram of a movable lens assembly according to an embodiment.
FIG. 4 is a schematic structural diagram of a leaf spring according to an embodiment.
Fig. 5 is a schematic structural diagram of a second embodiment of a micro optical zoom module according to the present invention.
Fig. 6 is a schematic structural view of a movable lens assembly and a spring portion according to the second embodiment.
Fig. 7 is a schematic view of a prism structure according to the second embodiment.
Detailed Description
To facilitate an understanding of the present invention for those skilled in the art, the present invention will be described in further detail below with reference to specific embodiments and accompanying drawings.
The first embodiment is as follows:
referring to fig. 1 to 4, the micro optical zoom module provided by the present invention includes a base 1 and a housing 2 connected to the base, wherein the housing 2 and the base 1 form an accommodating space, and an opening 21 is formed on a top surface (a first surface) of the housing 2. The micro optical zoom module further comprises a movable lens assembly 3 arranged in the accommodating space and opposite to the opening 21 of the shell, a driving component 4 arranged in the accommodating space and used for driving the movable lens assembly 3 to move along the optical axis direction or the direction vertical to the optical axis direction, and a fixed lens assembly 5 fixed on the top surface of the shell 1.
The fixed lens assembly 5 includes a second lens 52 and a second mount 51 for supporting and protecting the second lens 52, and a frame-shaped second base 53 fixed to a first face of the housing 2. When the micro optical zoom module is not in an operating state, that is, the micro optical zoom module is stationary and the driving member 4 is not energized, the optical axes of the fixed lens assembly 5 and the movable lens assembly 3 should coincide. For convenience of description, the optical axes mentioned hereinafter refer to the optical axes of the fixed lens assembly 5 and the movable lens assembly 3 when the micro optical zoom module is not in the operating state. And the side close to the shot object is the front of the optical axis, and the side far away from the shot object is the back of the optical axis. The movable lens assembly 3 includes a first lens 32 and a first lens holder 31 for fixing the first lens.
Specifically, the driving part 4 mainly includes a circuit board 41 fixed on the base 1, an anti-shake coil 47 fixed on the circuit board 41, a focusing coil 42 wound around the periphery of the first lens holder 31 in the direction of the optical axis, and a plurality of magnets 43 arranged around the periphery of the focusing coil. The base 1 is square, a through hole 11 is formed in the middle of the base, and a corresponding through hole 411 is formed in the middle of the circuit board 41. The first lens holder 31 has a regular octagonal shape, and a through hole for fixing a lens is formed in the middle thereof. The focus coil 42 is wound around the outer peripheral wall of the first lens holder 31 and also has an octagonal shape. The magnet 43 is fixed to a frame 44. The frame 44 is substantially square and is disposed around the first lens holder 31. Grooves 441 for receiving ends of the magnets 43 are provided at each of four sides of the frame 44. In this embodiment, 4 magnets are disposed around the focusing coil, and each magnet is a rectangular parallelepiped, and has an end inserted into the groove 441 of the frame 44 and opposed to the outer periphery of the focusing coil 42 with a space therebetween.
The drive part 4 further includes a plate spring 45 for suspension-supporting the first mirror base 31 inside the frame 44 and movable in the optical axis direction. The plate spring 45 is formed in a plate/plate shape as a whole, and includes an inner peripheral side 451 having a substantially circular ring shape, four fixing pieces as an outer peripheral side 452 corresponding to four corners of the frame 44, and an elastic arm portion 453 connecting the inner peripheral side and the outer peripheral side. Wherein the inner peripheral side is connected to the first lens holder 31, the outer peripheral side is connected to four corners of the frame 44, and the wrist portion extends in the radial and circumferential directions and in a direction parallel to the four corners of the frame to have a predetermined elasticity. In this embodiment, the two leaf springs 45 are respectively disposed at two ends of the frame 44 and the first lens holder 31 along the optical axis direction. When the focus coil 42 is energized, the first lens holder 31 (focus coil 42) can move in the direction of the optical axis relative to the frame 44 (magnet 43) by the lorentz force generated, thereby realizing focusing and zooming functions.
The drive member 4 further includes a plurality of linear springs 46 extending in the optical axis direction, and 4 linear springs are provided in the present embodiment. One end of the linear spring 46 is connected to the base 1 side, and the other end is connected to the frame 44 side. In the present embodiment, the linear springs 46 are provided at four corners, one end of each of which is connected to a corner of the circuit board 41 on the base 1 side, and the other end of each of which is connected to a corner of the plate spring 45 on the frame 44 side located forward (closer to the subject) in the optical axis direction. The first mirror base 31 and the frame 44 to which the magnet 43 is fixed are suspended from the base 1 by being supported by the linear spring 46.
The anti-shake coils 47 fixed to the circuit board 41 are a plurality of coils arranged to face the magnets 43 with spaces therebetween, and the anti-shake coils 47 are wound in a direction parallel to the optical axis and are each formed in an oblong shape. In fig. 1, the anti-shake coil 47 is a flat coil formed on a circuit board (by etching or the like), and in other embodiments, the anti-shake coil may be a plurality of independent coils formed by winding a conductive wire. When the anti-shake coil 47 is energized, the generated lorentz force interacts with the magnet 43, so that the frame 44 (the magnet 43) drives the lens to move in a direction perpendicular to the optical axis relative to the base 1 (the anti-shake coil 47), thereby realizing anti-shake.
The circuit board 41 is used for supplying power to the focusing coil 42 and the anti-shake coil 47, and controlling the amount of power supply.
When the micro optical zoom module is implemented, the optical axis direction of the micro optical zoom module is kept to be vertical to the imaging element, and the micro optical zoom module is arranged above the imaging element through the base. In operation, light passes through the second lens 52 of the fixed lens assembly 5 and then passes through the first lens 32 of the movable lens assembly 3, the circuit board 41 outputs current to the focusing coil 42 of the driving component 4, and the first lens holder 31 is pushed by the lorentz force to move in the optical axis direction under the action of the magnet 43, so that the movable lens assembly is driven to move in the optical axis direction to reach the balance point of the lorentz force, the restoring force of the plate spring and the gravity, and the focusing and zooming functions are realized, so that a clear image is obtained on an imaging element. When shaking happens, the driving part energizes the anti-shaking coil, and the movable lens component can move in the direction vertical to the optical axis under the action of the magnet and the linear spring to achieve the anti-shaking purpose.
The second embodiment:
referring to fig. 5 to 7, the present embodiment provides a micro optical zoom module, which includes a base 1 and a housing 2 connected to the base, wherein the housing 2 and the base 1 form an accommodating space, and an opening 21 is formed on one side surface (defined as a first surface) of the housing 2. The miniature optical zoom module further comprises a movable lens assembly 3 arranged in the accommodating space and opposite to the opening 21 of the shell, a driving component 4 arranged in the accommodating space and used for driving the movable lens assembly to move along the optical axis direction or the direction vertical to the optical axis, and a fixed lens assembly 5 fixed on the first surface of the shell. Further, an optical path changing mechanism is provided on the side of the fixed lens unit 5 close to the subject.
The fixed lens assembly 5 includes a second lens 52 and a second mount 51 for supporting and protecting the second lens 52, and a frame-shaped second base 53 fixed on the first face of the housing 2. When the micro optical zoom module is not in an operating state, that is, when the micro optical zoom module is still and the driving part 4 is not powered on, the optical axes of the fixed lens assembly 5 and the movable lens assembly 3 are overlapped. For convenience of description, the optical axes mentioned hereinafter refer to the optical axes of the fixed lens assembly 5 and the movable lens assembly 3 when the micro optical zoom module is not in the operating state, and the side close to the object is the front of the optical axis, and the side far away from the object is the back of the optical axis. The movable lens assembly includes a first lens 32 and a first lens mount 31 for fixing the first lens 32.
The optical path changing mechanism 6 includes a third mount 61 on which a prism 62 is provided, and light from the direction of the object enters the prism, is refracted, and is then reflected toward the fixed lens assembly. The prism 62 and the third base 61 may be rotatably connected, and the optical path changing mechanism may further include a driving mechanism (not shown) for driving the prism 62 to rotate to change the reflection path of the light.
The drive unit 4 mainly includes a circuit board 41 fixed to the base 1, a drive coil 47' fixed to the circuit board 41, and a plurality of magnets 43 fixed to a surface of the first lens holder 31 facing the circuit board 41. Meanwhile, a plurality of linear springs 46 are provided in a direction perpendicular to the circuit board. The base 1 and the circuit board 41 are both in the shape of a square plate. The driving coils 47' are a plurality of long circular coils wound around a direction perpendicular to the circuit board, and in the present embodiment, a plurality of driving coils 47' (i.e., flat coils) formed (by etching or the like) on a single circuit board having a substantially square shape are used, and the driving coils 47' are respectively disposed at four sides of the single circuit board in correspondence with the plurality of magnets while the coil sides are parallel to the circuit board sides. In the specific implementation, one magnet can correspond to one coil, and one magnet can also correspond to a plurality of coils. In other embodiments, the drive coil 47' may be a separate coil wound from a wire.
The first mirror base 31 is substantially square, and defines a surface thereof opposite to the circuit board 41 as a bottom surface, a surface thereof opposite to the circuit board 41 as a top surface, a pair of side surfaces opposite and opposite to the opening 21 of the housing 2 as first side surfaces, and a surface adjacent to the first side surface as a second side surface. The magnet 43 is fixed to the bottom surface of the first mirror holder 31 and is disposed opposite to the driving coil 47' with a space therebetween. The lens is held in a hole through a first side of the first lens holder 31 and is opposed to the opening 21 of the housing 2.
Two second side surfaces of the first lens seat 31 extend outward to form a bearing portion 311, 312. Each of the carrying portions 311,312 is T-shaped as viewed from a direction perpendicular to the circuit board 41, and has a wider end (a transverse portion of the T) located away from the second side surface and an end portion of a narrower end (a vertical portion of the T) connected to the second side surface. A spring plate 7 is fixed to each of the bearing portions 311, 312.
The spring 7 is in the form of a plate/sheet having a fixing portion 71 having the same shape as the bearing portion 311 in the direction perpendicular to the circuit board 41, and two elastic cantilevers 72 extending from both ends of the fixing portion in the optical axis direction. That is, the spring plate 7 includes a fixing portion 71 and two elastic cantilevers 72 connected to two ends of the fixing portion, the fixing portion is fixedly connected to the bearing portion 311, the elastic cantilevers 72 are suspended outside the bearing portion 311, and the elastic cantilevers 72 and the fixing portion are located in the same plane without being stressed. Specifically, in the present embodiment, the end of each elastic cantilever 72 extends from the end of the wider end (the lateral portion of the T) of the fixing portion 71 of the spring 7 in the optical axis direction, then bends and extends toward the second side surface of the first lens holder 31, then bends and extends toward the narrower portion of the fixing portion, then continues to bend and extends toward the second side surface of the first lens holder 31, and finally bends again at a position close to the second side surface of the first lens holder 31 and extends toward the narrower portion of the fixing portion, and finally connects with the close end of the narrower portion of the fixing portion.
In this embodiment, 4 linear springs 46 are provided, one end of each linear spring 46 is connected to the first mirror base 31, specifically to the elastic cantilever 72 of the spring 7, and the other end is connected to the base 1, specifically to a corner of the circuit board 41. The tilt of the movable lens group is maintained within a certain range by the linear spring 46, while the first lens holder 31 holding the lens is suspended and supported on the base 1 so that the first lens holder 31 can move in a direction parallel to the circuit board.
When the driving coil 47' is energized, it generates lorentz force to interact with the magnetic force under the action of the magnet 43, so as to push the movable lens assembly to move in the optical axis direction or the direction perpendicular to the optical axis, thereby realizing the functions of focusing or zooming and anti-shake.
In a specific implementation process, the circuit board 41 energizes the group of driving coils 47' located in the optical axis direction, and the first lens 32 of the movable lens assembly 3 is moved in the optical axis direction by the urging of the lorentz force under the action of the magnet 43, so as to realize focusing and zooming functions. The circuit board 41 energizes a group of driving coils 47' in the direction perpendicular to the optical axis, and the first lens 32 of the movable lens assembly 3 is moved in the direction perpendicular to the optical axis by the urging of the lorentz force by the magnet 43, thereby achieving the anti-shake function.
In operation, light from a subject first enters the prism 62, the light is refracted after entering the prism and then reflected to the fixed lens assembly 5, the light passes through the second lens 52 of the fixed lens assembly and then passes through the first lens 32 of the movable lens assembly 3, the circuit board 41 outputs current to the driving coil 47' of the driving component, and the movable lens assembly 3 is driven to move, so that a clear image is obtained on the imaging element.
In this embodiment, the spring 7 is fixed on the two bearing portions 311,312 of the first mirror seat 31, in other embodiments, the bearing portions may be eliminated, and the fixing portion 71 of the spring 7 may be directly fixed on the top surface or the bottom surface or the second side surface of the first mirror seat 31, as long as at least a portion of the elastic cantilever 72 is in an unobstructed suspended state to connect the end of the linear spring 46, so as to implement the leaf spring function. The elastic cantilever 72 may not be in the same plane as the fixing portion 71, for example, the fixing portion may be L-shaped, one portion of which is fixed on the second side surface of the first lens holder, and the other portion of which extends to the outside of the first lens holder and is connected to the elastic cantilever, so that the elastic cantilever is suspended.
In other embodiments, the wider end of the carrying portion can be connected to the second side of the first lens holder, and the narrower end is a free end.
In other embodiments, the spring arm of the spring plate can be deformed, and similar elastic deformation and recovery effects can be achieved as long as the spring arm is bent multiple times and extends in the optical axis direction and the direction perpendicular to the optical axis. Both ends of the elastic arm are connected to the wider end and the narrower end of the fixing portion 71 of the spring, respectively, to be suspended.
In both embodiments, the first lens 32 of the movable lens assembly 3 may protrude from the opening 21 of the housing 2 so as to protrude outside the housing 2, and thus the second base 53 is required to elevate/isolate the second lens holder 51. In other embodiments, if the first lens 32 of the movable lens module 3 does not protrude out of the opening 21, the second base 53 can be eliminated, and the second lens holder 51 can be directly fixed to the housing 2.
The lens group is divided into the movable lens assembly and the fixed lens group, the movable part is driven by the driving part to move in the direction of the optical axis so as to realize focusing and zooming functions, the movable part is driven to move in the direction vertical to the optical axis so as to realize anti-shake functions, and the bearing weight of the driving part is greatly reduced, so that the driving part is miniaturized, lightened and thinned, the whole thickness and the width of the camera are thinner, the driving efficiency is improved, and the power consumption is reduced.
While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the scope of the included claims.
Claims (7)
1. A miniature optical zoom module, comprising:
a base (1);
the shell (2) is connected to the base, an accommodating space is enclosed by the shell and the base, and an opening (21) is formed in the first surface of the shell;
a movable lens assembly (3) disposed in the housing space corresponding to the opening;
a driving member (4) disposed in the housing space for driving the movable lens assembly (3) to move in at least one of an optical axis direction and a direction perpendicular to the optical axis direction; and
a fixed lens assembly (5) fixed to a first face of the housing;
under the condition that the micro optical zoom module is still and the driving part (4) is not electrified, the fixed lens component (5) is superposed with the optical axis of the movable lens component (3);
a light path changing mechanism (6) is arranged on one side, close to a shot object, of the fixed lens component (5), and comprises a third lens base (61), and a prism (62) is connected to the third lens base and used for refracting and reflecting light from the direction of the shot object to the fixed lens component;
the movable lens assembly (3) comprises a first lens (32) and a first lens base (31) for fixing the first lens;
the drive member (4) includes:
a circuit board (41) fixed on the base, wherein the optical axis of the movable lens assembly is parallel to the surface of the circuit board;
a plurality of driving coils (47') provided on the circuit board and wound around a direction perpendicular to the surface of the circuit board;
a plurality of magnets (43) fixed on a surface of the first lens holder facing the circuit board, the plurality of magnets facing the plurality of driving coils with a space therebetween; and
and a plurality of linear springs (46) extending in a direction perpendicular to the surface of the circuit board, one end of which is connected to the first mount side and the other end of which is connected to the base side, for suspending the first mount in a state of being movable in the optical axis direction of the movable lens assembly and in a direction perpendicular to the optical axis direction of the movable lens assembly.
2. The miniature optical zoom module of claim 1, wherein the prism (62) is rotatably connected to the third mount (61).
3. The miniature optical zoom module of claim 2, wherein the fixed lens assembly (5) comprises a second lens (52) and a second mount (51) for supporting and protecting the second lens.
4. The miniature optical zoom module of claim 1, further comprising a plurality of spring plates (7) fixed on the first lens holder (31), wherein the spring plates comprise a fixing portion (71) for fixing on the first lens holder and a flexible cantilever (72) extending from the fixing portion, the flexible cantilever extends out of the first lens holder and is suspended, one end of the linear spring is connected to the flexible cantilever, and the other end of the linear spring is connected to the circuit board (41).
5. The miniature optical zoom module of claim 4, wherein the first lens holder (31) has two bearing portions (311, 312) extending outwardly from the side surfaces thereof on both sides of the optical axis, and the spring plates (7) are fixed to the two bearing portions.
6. The miniature optical zoom module of claim 5, wherein each of the carrier portions (311, 312) is T-shaped as viewed in a direction perpendicular to the circuit board (41), and has a wider end located at a side remote from the first mount (31) and a narrower end connected to the side of the first mount; the shape of the fixed part (71) of the reed is the same as that of the bearing part and is fixed with the bearing part, and at least one part of the elastic cantilever (72) extends out of the bearing part to be in a suspended state.
7. The miniature optical zoom module of claim 6, wherein the elastic cantilever (72) is bent several times to extend in the optical axis direction and the direction perpendicular to the optical axis, and both ends thereof are connected to the wider end and the narrower end of the fixing portion (71), respectively.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710451921.3A CN107135344B (en) | 2017-06-15 | 2017-06-15 | Miniature optical zoom module |
| TW107114416A TWI718370B (en) | 2017-06-15 | 2018-04-27 | Micro optical zoom module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710451921.3A CN107135344B (en) | 2017-06-15 | 2017-06-15 | Miniature optical zoom module |
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| Publication Number | Publication Date |
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| CN107135344A CN107135344A (en) | 2017-09-05 |
| CN107135344B true CN107135344B (en) | 2022-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710451921.3A Active CN107135344B (en) | 2017-06-15 | 2017-06-15 | Miniature optical zoom module |
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| CN (1) | CN107135344B (en) |
| TW (1) | TWI718370B (en) |
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Also Published As
| Publication number | Publication date |
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| TW201905568A (en) | 2019-02-01 |
| CN107135344A (en) | 2017-09-05 |
| TWI718370B (en) | 2021-02-11 |
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