CN219105194U

CN219105194U - Liquid lens zoom module, liquid lens mechanism and electronic equipment

Info

Publication number: CN219105194U
Application number: CN202223320860.2U
Authority: CN
Inventors: 曾正德; 吴维瀚
Original assignee: Luxvisions Innovation Ltd
Current assignee: Luxvisions Innovation Ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-05-30
Anticipated expiration: 2032-12-09

Abstract

The utility model discloses a liquid lens zoom module, a liquid lens mechanism and electronic equipment, wherein the liquid lens zoom module comprises a shell, a zoom film and an actuating mechanism, the zoom film is attached to the shell so as to enable a liquid lens to be sealed in the shell, the shell comprises an optical volume part and a driving volume part which are communicated, the zoom film comprises a film optical part corresponding to the optical volume part and a film driving part corresponding to the driving volume part, the actuating mechanism comprises a spring plate, a pull seat and a pull wire, the pull seat is arranged in the shell, the spring plate is connected below the pull seat and is arranged on the film driving part, and the pull wire penetrates through the pull seat and is connected to an energizing terminal, wherein the pull seat drives the spring plate to vertically move so as to drive the film driving part to bulge or sag when moving. The actuating mechanism of the liquid lens zoom module has the advantages of simple structure, small occupied volume, low manufacturing difficulty, strong zoom driving force and reasonable design of the thickness of the driving film.

Description

Liquid lens zoom module, liquid lens mechanism and electronic equipment

Technical Field

The utility model belongs to the technical field of lens modules, and particularly relates to a liquid lens zoom module, a liquid lens mechanism comprising the liquid lens zoom module and electronic equipment comprising the liquid lens mechanism.

Background

The liquid lens generally comprises a lens frame, a light-transmitting cover plate and a light-transmitting film, wherein the light-transmitting cover plate and the light-transmitting film are respectively used for sealing two end surfaces of the lens frame, liquid is encapsulated in the lens frame, and the liquid in the lens frame flows through contacting and extruding the light-transmitting film, so that the shape of the liquid can be changed, and the curvature, the focal length and the like of the liquid lens are changed. Current liquid lens driving mechanisms typically use electromagnetic force to push down or pull up the light transmissive film for zooming. This technique has the following problems: when the thickness of the light-transmitting film is too thick, the electromagnetic force is insufficient to drive the light-transmitting film to move, so that the liquid lens cannot be zoomed; when the thickness of the light-transmitting film is too thin, the liquid lens is easy to generate coma due to gravity, is easy to break, and has higher production difficulty.

Disclosure of Invention

The utility model aims to provide a liquid lens zooming module which has strong zooming driving force and can drive a thicker driving film to move and zoom.

Another object of the present utility model is to provide a liquid lens mechanism including the liquid lens zoom module.

It is still another object of the present utility model to provide an electronic apparatus including the liquid lens mechanism.

In order to achieve the above object, a liquid lens zoom module of the present utility model includes a housing and a zoom film attached to the housing so that a liquid lens is enclosed in the housing, the housing including an optical volume portion and a driving volume portion that are communicated, the zoom film including a film optical portion corresponding to the optical volume portion and a film driving portion corresponding to the driving volume portion, and further includes an actuating mechanism including: the pull seat is arranged in the shell; a spring plate connected below the pull seat and arranged on the film driving part; the pull wire passes through the pull seat and is connected to the energizing terminal; when the pull seat moves, the elastic sheet is driven to vertically move so as to drive the film driving part to bulge or sink.

In an embodiment of the liquid lens zoom module, the liquid lens zoom module further includes a magnet set, wherein the magnet set includes a first magnet and a second magnet disposed opposite to each other and having a certain gap, and the film driving portion is sandwiched between the elastic sheet and the first magnet.

In an embodiment of the liquid lens zoom module, the magnet set further includes a magnetic field sensor for detecting a distance between the first magnet and the second magnet, and the second magnet includes a hollow portion, and the magnetic field sensor is disposed in the hollow portion.

In an embodiment of the liquid lens zoom module, the elastic piece includes a protrusion, and the pull seat includes a pushing portion acting with the protrusion.

In an embodiment of the liquid lens zoom module, the convex portion and the pushing portion are inclined planes with the same inclination direction; or the convex part and the pushing part are inclined planes with opposite inclination directions.

In an embodiment of the liquid lens zoom module, the protruding portion is one or more arc-shaped protrusions, and the pushing portion is an arc-shaped recess correspondingly arranged.

In an embodiment of the liquid lens zoom module, the actuating mechanism further includes a terminal fixing seat, and the pull wire is connected to the power-on terminal through the terminal fixing seat.

In an embodiment of the liquid lens zoom module, the housing includes a first end and a second end respectively located at two sides of the optical volume portion, the pull seat is disposed at the first end, and the terminal fixing seat is disposed at the second end.

The liquid lens mechanism comprises the liquid lens and the liquid lens zooming module, and the liquid lens is arranged in the optical volume part and the driving volume part in a sealing way.

The electronic equipment comprises a shell and an image pickup device accommodated in the shell, wherein the image pickup device comprises the liquid lens mechanism.

The actuating mechanism of the liquid lens zoom module has the advantages of simple structure, small occupied volume, low manufacturing difficulty, strong zoom driving force and capability of reasonably setting the thickness of the driving film according to design requirements.

The utility model will now be described in more detail with reference to the drawings and specific examples, which are not intended to limit the utility model thereto.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of a liquid lens zoom module according to the present utility model (the cover and the zoom film are not shown);

FIG. 2 is a schematic top view of a liquid lens system according to a first embodiment of the present utility model (the cover is not shown);

FIG. 3 is a schematic cross-sectional view of a first embodiment of a liquid lens zoom module according to the present utility model;

FIG. 4 is a schematic cross-sectional view of a liquid lens zoom module according to a second embodiment of the present utility model;

FIG. 5 is a schematic top view of a liquid lens system according to a third embodiment of the present utility model (the cover is not shown);

fig. 6 is a schematic cross-sectional view of a third embodiment of a liquid lens zoom module according to the present utility model.

Wherein reference numerals are used to refer to

10: liquid lens zoom module

100: comprising a shell

110: optical volume

120: drive volume

100a: first end

100b: second end

200: zoom film

210: film optical part

220: film driving part

300: actuating mechanism

310: spring plate

311: raised portion

320: pulling seat

321: pushing part

330: stay wire

340: energizing terminal

350: terminal fixing seat

400: magnet set

410: first magnet

420: second magnet

421: hollow part

430: magnetic field sensor

90: liquid lens

Detailed Description

The following detailed description of the present utility model is provided with reference to the accompanying drawings and specific embodiments, so as to further understand the purpose, the scheme and the effects of the present utility model, but not to limit the scope of the appended claims.

References in the specification to "one embodiment," "an example embodiment," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Furthermore, such phrases are not intended to refer to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

Certain terms are used throughout the description and following claims to refer to particular components or features, as one of ordinary skill in the art will appreciate that a technical user or manufacturer may refer to the same component or feature in different terms or terms. The present specification and the following claims do not take the form of an element or component with the difference in name, but rather take the form of an element or component with the difference in function as a criterion for distinguishing. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. In addition, the term "coupled" as used herein includes any direct or indirect connection.

As shown in fig. 1 to 3, the liquid lens zoom module 10 of the present utility model includes a housing 100, a zoom film 200 and an actuating mechanism 300, wherein the zoom film 200 is attached to the housing 100 to seal the liquid of the liquid lens 90 in the housing 100 (as shown in fig. 3). The housing 100 includes an optical volume 110 and a driving volume 120 that are in communication, and the zoom film 200 includes a film optical portion 210 and a film driving portion 220, wherein the film optical portion 210 of the zoom film 200 is disposed corresponding to the optical volume 110 of the housing 100, and the film driving portion 220 of the zoom film 200 is disposed corresponding to the driving volume 120 of the housing 100. The liquid of the liquid lens 90 is enclosed in the optical volume 110 and the driving volume 120 of the housing 100, and the actuating mechanism 300 drives the film driving portion 220 of the zoom film 200 to bulge or bulge, so that the liquid of the liquid lens 90 can be driven to flow between the optical volume 110 and the driving volume 120 of the housing 100 to drive the film optical portion 210 to bulge or bulge, thereby achieving the zoom effect.

The actuating mechanism 300 includes a spring 310, a pull seat 320, and a pull wire 330, the pull seat 320 is disposed in the housing 100, the spring 310 is fixedly connected below the pull seat 320 and disposed on the film driving portion 220 of the zoom film 200, and the pull wire 330 passes through the pull seat 320 and is connected to the power-on terminal 340. When the pull wire 330 drives the pull seat 320 to move in the housing, the pull seat 320 drives the elastic sheet 310 to vertically move, and the elastic sheet 310 drives the film driving portion 220 to bulge or sink, so that the liquid driving the liquid lens 90 flows into the driving volume portion 120 from the optical volume portion 110 of the housing 100, or flows into the optical volume portion 110 from the driving volume portion 120, so as to drive the film optical portion 210 to bulge or sink.

As shown in fig. 1 and 2, the actuating mechanism 300 further includes a terminal holder 350, and the pull wire 330 is connected to the energizing terminal 340 through the terminal holder 350 to avoid displacement.

The housing 100 includes a first end 100a and a second end 100b respectively located at two sides of the optical volume 110, the pull seat 320 is disposed at the first end 100a of the housing 100, the terminal fixing seat 350 is disposed at the second end 100b of the housing 100, so that the planar area is reasonably used, the stroke of the pull wire 330 is lengthened, and the occupied space of the actuating mechanism 300 is reduced.

In one embodiment of the present utility model, the actuating mechanism 300 is, for example, an SMA actuator, the pull wire 330 is, for example, an SMA pull wire, and the SMA pull wire is a material composed of two or more metal elements having a shape memory effect (shape memory effect, SME) through thermoelastic and martensitic transformation and inversion thereof. The SMA can deform at a lower temperature, and can recover the shape before deformation after being electrified and heated, so that the electrically controllable shrinkage is realized, and the driving force is generated. The SMA actuator provided by the utility model has long stroke and large pulling force, and the pulling force of the 1cm SAM pulling wire is greater than 1kg, so that the thickness of the driving film can be reasonably designed according to the structure. In addition, the actuating mechanism 300 of the utility model has simple structure, small occupied volume and low manufacturing difficulty.

However, the utility model is not limited thereto, and the actuating mechanism 300 can achieve the focusing effect of the liquid lens by driving the pull seat to move by using a common pull wire, which is within the scope of the utility model. The following description will take the SMA actuator as an example of the actuator mechanism 300.

The spring 310 is maintained in two ways, namely, a connection method of the spring 310 and a magnetic method of the magnet assembly 400 described below, and may be used alone or in combination, as will be described in detail below.

The spring 310 includes a protruding portion 311, and the pull seat 320 includes a pushing portion 321 that acts with the protruding portion 311. In an embodiment shown in fig. 2 and 3, the protruding portion 311 and the pushing portion 321 are inclined planes with the same inclination direction, and the pushing portion 321 is located above the protruding portion 311. The pull wire 330 is driven to act, the pull wire 330 pulls the pull seat 320, and the pull seat 320 pushes the elastic sheet 310 to move downwards. In detail, when the pull wire 330 drives the pull seat 320 to move to the left, the protrusion 311 is pressed by the pushing portion 321 to move downward, which drives the lower film driving portion 220 to sink, and the space of the driving volume portion 120 is reduced, so that the liquid flows from the driving volume portion 120 to the optical volume portion 110.

The magnet assembly 400 of the liquid lens zoom module 10 of the present utility model includes a first magnet 410 and a second magnet 420 disposed opposite to each other with a certain gap therebetween, and the film driving part 220 is sandwiched between the spring piece 311 and the first magnet 410. The first magnet 410 is disposed on a side of the film driving portion 220 different from the elastic sheet 311.

When the actuator 300 is not driven, the film driving unit 220 is fixed to the lower side of the pull seat 320 by the connection, so that the film driving unit 220 maintains its original state when the actuator 300 is not operated. Of course, the first magnet 410 and the second magnet 420 may be mutually exclusive, and the first magnet 410 may maintain the film driving unit 220 in the original state by magnetic force. When the actuating mechanism 300 is driven, the pull wire 330 is actuated, the pull wire 330 pulls the pull seat 320, the pull seat 320 pushes the elastic sheet 310 to move downwards, so that the film driving portion 220 of the driving film 200 moves downwards, the liquid flows from the driving volume portion 120 to the optical volume portion 110, at this time, the film optical portion 210 of the driving film 200 protrudes upwards to generate curvature, and at this time, the second magnet 420 makes the first magnet 410 generate upward repulsive force.

In another embodiment shown in conjunction with fig. 2 and 4, the boss 311 'and the pushing portion 321' are inclined surfaces with opposite inclination directions, and the pushing portion 321 'is opposite to the boss 311'. When the pull wire 330 drives the pull seat 320' to move to the left, the pushing portion 321' pushes the protruding portion 311' to move upwards, driving the lower film driving portion 220 to move upwards, and increasing the space of the driving volume portion 120, so that the liquid flows from the optical volume portion 110 to the driving volume portion 120.

Specifically, when the actuator 300 is not driven, the film driving unit 220 is connected and fixed to the lower portion of the pull seat 320, so that the film driving unit 220 maintains its original state when the actuator 300 is not operated. Of course, the first magnet 410 and the second magnet 420 may be provided to attract each other, and the first magnet 410 may maintain the film driving part 220 in the original state by magnetic force. When the actuating mechanism 300 is driven, the pull wire 330 is actuated, the pull wire 330 pulls the pull seat 320, the pull seat 320 pushes the elastic sheet 310 to move upwards, so that the film driving portion 220 of the driving film 200 moves upwards, the liquid flows from the optical volume portion 110 to the driving volume portion 120, at this time, the film optical portion 210 of the driving film 200 is recessed downwards to generate curvature, and at this time, the second magnet 420 makes the first magnet 410 generate downward suction force.

Further, as shown in fig. 3 and 4, the magnet assembly 400 further includes a magnetic field sensor 430 for detecting a distance between the first magnet 410 and the second magnet 420, and the second magnet 420 includes a hollow portion 421, and the magnetic field sensor 430 is disposed at the hollow portion 421. The magnetic field sensor 430 can detect the position of the first magnet 410, and thus determine the movement stroke of the film driving part 220 driving the film 200.

In another embodiment shown in fig. 5 and 6, the liquid lens zoom module 10 includes a housing 100, a zoom film 200 and an actuating mechanism 300, wherein the actuating mechanism 300 drives the film driving portion 220 of the zoom film 200 to be raised or recessed, so that the liquid of the liquid lens 90 can be driven to flow between the optical volume portion 110 and the driving volume portion 120 of the housing 100, and the film optical portion 210 is raised or recessed, so as to achieve the zoom effect.

The difference is that the protruding portion 311 "of the actuating mechanism 300 is one or more arc-shaped protrusions, and the pushing portion 321" is a corresponding arc-shaped recess. When the actuator 300 is not driven, the film driving unit 220 is fixed to the lower side of the pull seat 320 by the connection, so that the film driving unit 220 maintains its original state when the actuator 300 is not operated. Of course, the first magnet 410 and the second magnet 420 may be mutually exclusive, and the first magnet 410 may be in the original state by the magnetic force position film driving unit 220. When the actuating mechanism 300 is driven, the pull wire 330 is actuated, the pull wire 330 pulls the pull seat 320, the pull seat 320 pushes the protrusion 311 "through the pushing portion 321, the driving spring 310 moves downward, the film driving portion 220 of the driving film 200 moves downward, the liquid flows from the driving volume portion 120 to the optical volume portion 110, at this time, the film optical portion 210 of the driving film 200 protrudes upward to generate curvature, and at this time, the second magnet 420 makes the first magnet 410 generate upward repulsive force.

The first magnet 410 may be a magnet or a yoke.

The liquid lens mechanism of the present utility model includes a liquid lens 90 and a liquid lens zoom module 10, wherein the liquid lens 90 is enclosed and disposed in an optical volume 110 and a driving volume 120 of a housing 100. The liquid lens 90 performs zooming by the liquid lens zooming module 10.

The electronic equipment comprises a shell and an image pickup device accommodated in the shell, wherein the image pickup device comprises a liquid lens mechanism. The electronic device is, for example, a mobile phone, a notebook computer, a tablet computer, etc.

Of course, the present utility model is capable of other various embodiments and its several details are capable of modification and variation in light of the present utility model, as will be apparent to those skilled in the art, without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. A liquid lens zoom module, comprising a housing and a zoom film, wherein the zoom film is attached to the housing to seal a liquid lens in the housing, the housing comprises an optical volume and a driving volume which are communicated, and the zoom film comprises a film optical portion corresponding to the optical volume and a film driving portion corresponding to the driving volume, and the liquid lens zoom module is characterized by further comprising an actuating mechanism, wherein the actuating mechanism comprises:

the pull seat is arranged in the shell;

a spring plate connected below the pull seat and arranged on the film driving part; and

The pull wire passes through the pull seat and is connected to the energizing terminal;

when the pull seat moves, the elastic sheet is driven to vertically move so as to drive the film driving part to bulge or sink.

2. The liquid lens zoom module according to claim 1, further comprising a magnet group including a first magnet and a second magnet disposed opposite to each other with a certain gap, the film driving portion being interposed between the elastic piece and the first magnet.

3. The liquid lens zoom module according to claim 2, wherein the magnet group further comprises a magnetic field sensor that detects a distance between the first magnet and the second magnet, the second magnet comprising a hollow portion, the magnetic field sensor being disposed in the hollow portion.

4. The liquid lens zoom module of claim 1, wherein the spring plate comprises a protrusion, and the pull seat comprises a pushing portion that acts with the protrusion.

5. The liquid lens zoom module according to claim 4, wherein the convex portion and the pushing portion are inclined surfaces having the same inclination direction; or the convex part and the pushing part are inclined planes with opposite inclination directions.

6. The liquid lens zoom module of claim 4, wherein the protrusion is one or more arc-shaped protrusions and the pushing portion is a corresponding arc-shaped recess.

7. The liquid lens zoom module of claim 1, wherein the actuation mechanism further comprises a terminal mount through which the pull wire connects the energized terminal.

8. The liquid lens zoom module of claim 7, wherein the housing comprises a first end and a second end on both sides of the optical volume, the pull seat is disposed at the first end, and the terminal holder is disposed at the second end.

9. A liquid lens mechanism comprising a liquid lens and a liquid lens zoom module according to any one of claims 1-8, the liquid lens being disposed enclosed within the optical volume and the drive volume.

10. An electronic device comprising a housing and an image pickup apparatus accommodated in the housing, wherein the image pickup apparatus comprises the liquid lens mechanism according to claim 9.