CN107241545A - Focusing method and focusing mechanism - Google Patents
Focusing method and focusing mechanism Download PDFInfo
- Publication number
- CN107241545A CN107241545A CN201610186005.7A CN201610186005A CN107241545A CN 107241545 A CN107241545 A CN 107241545A CN 201610186005 A CN201610186005 A CN 201610186005A CN 107241545 A CN107241545 A CN 107241545A
- Authority
- CN
- China
- Prior art keywords
- lens module
- focusing
- optical lens
- image
- focal length
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/28—Systems for automatic generation of focusing signals
- G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
- G02B7/38—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals measured at different points on the optical axis, e.g. focussing on two or more planes and comparing image data
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
- G03B13/36—Autofocus systems
Abstract
The present invention discloses a kind of focusing method and focusing mechanism.Focusing mechanism includes a lens assembly, an Image intake device, a focus adjuster and control device.Lens assembly includes a liquid lens module and an optical lens module.Optical lens module and liquid lens module correspond to each other setting.Image intake device and lens assembly correspond to each other setting.Focus adjuster is arranged on optical lens module or Image intake device, to drive optical lens module or Image intake device, and changes the focal length of optical lens module.Control device is electrically connected to lens assembly, Image intake device and focus adjuster, to control the focal length of liquid lens module and optical lens module.Therefore, invention achieves the effect of rapid focus.
Description
Technical field
The present invention relates to a kind of focusing method and focusing mechanism, more particularly to one kind can be carried out quickly
The focusing method and focusing mechanism of focusing.
Background technology
With the development of trend, the image pixel more and more higher of Image intake device, it is however generally that, mesh
Before there are 800~10,000,000 pixels, or even the Image intake device of 20,000,000 pixels frame per second (Frame
Rate 25~30FPS or so) is ranged approximately from.But, this will be too high because of pixel so that data volume
It is excessively huge, cause the speed in data access excessively slow, and can not rapidly carry out taking the photograph for image
Take.
In addition, at present general camera lens module (such as intelligent mobile phone, tablet PC, microscope or
Barcode reader (Barcode reader) etc.) use the auto-focusing of passive type, and camera lens module more
In lens module more utilize voice coil motor (Voice Coil Actuator/Voice Coil Motor) carry out
Driving.However, the camera lens module that such a utilization voice coil motor is driven, is limited to drive mechanism
Design, can only be focused under limited translational speed.In other words, entered using voice coil motor
The camera lens module of row driving, when actuating speed is more than a predetermined value, it will so that lens module is produced
Vibration, and lens module focal distance as the design of drive mechanism, move it distance still
There is the upper limit.
Furthermore, although also develop a kind of liquid lens at present, but such a liquid lens and can not be
Carry out trickle Focussing in its focal distance, and liquid lens to move back and forth speed different.
Therefore how to propose it is a kind of can carry out rapid focus with focus in object method and focusing fill
Put, to overcome above-mentioned missing, already as the art technology personage important topic to be solved.
The content of the invention
The technical problems to be solved by the invention are, a kind of focusing is provided in view of the shortcomings of the prior art
Method and focusing mechanism, to carry out rapid focus.
In order to solve above-mentioned technical problem, a wherein technical scheme system of the present invention provides one
Focusing method is planted, it includes providing a focusing mechanism, and the focusing mechanism includes a liquid lens module
And an optical lens module, wherein the liquid lens module has the multiple first default focusing areas
Section, the optical lens module has the multiple second default focusing sections；One object of correspondence, adjusts institute
The focal length of liquid lens module is stated, to cause the liquid lens module is focused described first pre- in one
If causing the image of the object to be located at whereby as the scope of a coarse focus adjustment section in section of focusing
In the range of the coarse focus adjustment section；And in the coarse focus adjustment section, adjust the optics
The focal length of lens module, to cause the optical lens module to focus in one described second default focusing
As the scope of fine tuning focusing section in section, cause the image of the object positioned at described thin whereby
In the range of tune focusing section；Wherein, the coarse focus adjustment section is the multiple described first default focusings
In section, one described first default focusing section of the image with optimal images definition.
Preferably, in the step of adjusting the focal length of the liquid lens module, still further comprise：
Detect distance of the object relative to the focusing mechanism；And according to the object relative to described
The distance of focusing mechanism, adjusts the focal length of the liquid lens module, to cause the object position
In in the coarse focus adjustment section.
Preferably, in the step of adjusting the focal length of the optical lens module, the optical lens mould
Block carries out auto-focusing in the coarse focus adjustment section, to cause the object to be located at the fine tuning pair
In burnt section.
Preferably, in the step of adjusting the focal length of the liquid lens module, still further comprise：
Focal distance scanning is carried out to the multiple described first default focusing sections；And according to multiple described
One default focusing section carries out the result of focal distance scanning, adjusts the focal length of the liquid lens module
To the scope of the coarse focus adjustment section.
Preferably, in the step of adjusting the focal length of the optical lens module, the optical lens mould
Block carries out auto-focusing in the coarse focus adjustment section, to cause the object to be located at the fine tuning pair
In burnt section.
Preferably, the fine tuning focusing section is preset in focusing sections for multiple described second, with most
The default focusing section of one described second of the image of good image definition.
Preferably, in the step of focusing mechanism is provided, still further comprise：One image is provided
Capturing apparatus, to absorb an image of the object；And a control device is provided, with according to described
The image of object adjusts the focal length of the liquid lens module and Jiao of the optical lens module
Away from.
Preferably, Image intake device in the step of adjusting the focal length of the liquid lens module with
And in the step of adjusting the focal length of the optical lens module, still further comprise：Continuous ingestion institute
State the image of object.
Preferably, the control device according to the image of the object judge the object whether position
In in the coarse focus adjustment section, or judge whether the object is located at the fine tuning and focuses section
It is interior, when the object is located in the coarse focus adjustment section, perform the regulation optical lens mould
The step of focal length of block, when the object is not located in the coarse focus adjustment section, continue to adjust
The liquid lens module.
Other technical scheme system of the present invention provides a kind of focusing mechanism, and it includes a camera lens
Device, an Image intake device, a focus adjuster and a control device.The lens assembly
Including a liquid lens module, an optical lens module and a central axis.Wherein described liquid lens
Head module includes a liquid lens unit.The optical lens module and the liquid lens module are each other
It is corresponding to set, wherein the optical lens module includes an optical lens unit.The central axis
Pass through the liquid lens module and the optical lens module.The Image intake device and the mirror
Head device corresponds to each other setting.The focus adjuster is arranged at the optical lens module or institute
State on Image intake device, to drive the optical lens module or the Image intake device, and
Change the focal length of optical lens module.The control device is electrically connected to the lens assembly, the shadow
As capturing apparatus and the focus adjuster, to control the liquid lens module and the optical lens
The focal length of mirror module.
The beneficial effects of the present invention are focusing method and focusing dress that the embodiment of the present invention is provided
Put, can first with the big characteristic of the displacement that liquid lens module translational speed is fast and focuses,
The movement of long range is carried out, substantially to focus in the coarse focus adjustment section for including object, Zhi Houzai
Sharp optical lens module is focused in the range of coarse focus adjustment section to object, and utilizes optical lens
Mirror module is accurately focused accuracy, to cause optical lens module is focused to be focused section in fine tuning
It is interior.Whereby, rapid focus can be carried out to object by liquid lens module and optical lens module.
To enable the feature and technology contents that are further understood that the present invention, refer to below in connection with this hair
Bright detailed description and accompanying drawing, but the accompanying drawing provided is only provided and used with reference to explanation, is not used for
The present invention is any limitation as.
Brief description of the drawings
Fig. 1 is the module block schematic diagram of focusing mechanism of the embodiment of the present invention.
Fig. 2 is a wherein perspective exploded view for focusing mechanism of the embodiment of the present invention.
Fig. 3 is wherein one three-dimensional combination diagram of focusing mechanism of the embodiment of the present invention.
Fig. 4 is an other perspective exploded view for focusing mechanism of the embodiment of the present invention.
Fig. 5 is other one three-dimensional combination diagram of focusing mechanism of the embodiment of the present invention.
Fig. 6 is the focusing section schematic diagram of the embodiment of the present invention.
Fig. 7 is a wherein steps flow chart schematic diagram for the focusing method of the embodiment of the present invention.
Fig. 8 is the step S102 of the focusing method of embodiment of the present invention schematic flow sheet.
Fig. 9 is the step S102 ' of the focusing method of embodiment of the present invention schematic flow sheet.
Embodiment
The following is illustrating presently disclosed relevant " focusing method and right by specific instantiation
The embodiment of coke installation ", those skilled in the art can understand this by content disclosed in this specification
The advantage and effect of invention.The present invention can be implemented by other different specific embodiments or should
With the various details in this specification may be based on different viewpoints and application, not depart from the present invention's
Spirit is lower to carry out various modifications and change.In addition, the accompanying drawing of the present invention is only simple schematically illustrate, and
The non-description according to actual size, first gives and chats bright.This hair will be explained in further detail in following embodiment
Bright correlation technique content, but disclosure of that and the technical scope for being not used to the limitation present invention.
First embodiment
First, refer to shown in Fig. 1 to Fig. 5, first embodiment of the invention provides a kind of focusing mechanism
L, to absorb the image of an object (figure is not illustrated), it includes a lens assembly 1, an image capturing
Device 2, a focus adjuster 3 and a control device 4.It is saturating that lens assembly 1 includes a liquid
Mirror module 11, an optical lens module 12 and one pass through liquid lens module 11 and optical lens module
12 central axis C, and liquid lens module 11 and optical lens module 12 are all in alignment with central shaft
Line C.It should be noted that, liquid lens module 11 can be wet for dielectric cleaning liquid lens either electricity
Profit formula liquid lens, it may include two immiscible transparency liquid (the first liquid 1111 and second liquids
1112), a driving electrodes 112 and a packaging machine component 113.The tool that two immiscible liquid are formed
The liquid-liquid interface of curvature is the axial symmetry spheroidal curved surface of liquid lens.Driving electrodes 112 are act as
Electric field is produced, to adjust the shape of (modulation) two immiscible liquid interface, and regulation liquid lens are reached
The purpose of focal length.In addition, mechanism member of the packaging machine component 113 for offer two liquid of sealing.In addition,
Optical lens module 12 is the lens group in general existing focusing mechanism, i.e. optical lens module 12
In optical lens unit 121 be by one or more pieces solid glass either one or more pieces plastics it is saturating
The lens group that mirror is constituted, and these glass or plastic lens are concavees lens or convex lens.Furthermore, need
It is noted that for purposes of illustration only, Fig. 2 to the liquid lens module 11 shown in Fig. 5 with dielectric cleaning
Liquid lens are illustrated.
Hold above-mentioned, also referring to shown in Fig. 2 to Fig. 5, Image intake device 2 can be with lens assembly
1 corresponds to each other setting, and Image intake device 2 can be a photosensitive coupling component (Charge-coupled
Device, CCD) or a complementary metal oxide semiconductor (Complementary
Metal-Oxide-Semiconductor, CMOS).Image intake device 2 may include a substrate 21
And one set chip 22 on the base plate (21.In addition, focus adjuster 3 can be arranged at optics
On lens module 12, to drive optical lens module 12 linearly mobile, and change optical lens module
12 focal length.However, in other embodiments, mode that can also be as shown in Figures 4 and 5,
Focus adjuster 3 ' is arranged on Image intake device 2, to drive Image intake device 2 to enter
Line is moved, and changes the focal length of optical lens module 12.In other words, focus adjuster 3
Can be voice coil motor (Voice Coil Actuator/Voice Coil Motor) or other driving optical lens
Mirror module 12 or the linearly moving motor of Image intake device 2, the right present invention are not limited.
Hold above-mentioned, liquid lens module 11 may include a liquid lens unit 111, and liquid lens mould
Block 11 also has the multiple first default focusing section F1 (referring to shown in Fig. 6), and central axis C
Pass through the central point of liquid lens unit 111.Wherein, liquid lens unit 111 can be by the first liquid
Body 1111 and second liquid 1112 are constituted.In addition, optical lens module 12 can be with liquid lens
Module 11 corresponds to each other setting, and optical lens module 12 includes the multiple second default focusing section F2.
Image intake device 2 is corresponding with liquid lens module 11 and optical lens module 12 to be set.Optics
Lens module 12 may include an optical lens unit 121, and central axis C passes through optical lens list
The central point of member 121.
For the embodiment of the present invention, Image intake device 2 and lens assembly 1 correspond to each other setting.
For example, optical lens module 12, liquid lens module 11 and Image intake device 2 can phases
Mutually overlapping is set.In other words, optical lens module 12 may be disposed at Image intake device 2 and liquid
Between state lens module 11, however, in other embodiments, liquid lens module 11 can be set
Between Image intake device 2 and optical lens module 12, the present invention not with optical lens module 12,
The order that liquid lens module 11 is overlapped is limited.
Hold above-mentioned, control device 4 is electrically coupleable to lens assembly 1, Image intake device 2 and focal length
Adjusting apparatus 3, to control the focal length of liquid lens module 11 and optical lens module 12.Come in detail
Say, control device 4 may be electrically connected to the driving electrodes 112 of liquid lens module 11, so that driving
Electrode 112 produces electric field, and then adjusts the curvature of liquid lens unit 111.Control device 4 also may be used
To control focus adjuster 3 (to call in the following text：Voice coil motor), make voice coil motor start to adjust optical lens
Solid glass in module 12, or make voice coil motor start to adjust Image intake device 2.Whereby,
By the setting of focus adjuster 3, the focal length of optical lens module 12 can be changed.Object into
As then Image intake device can be incident upon by liquid lens module 11 and optical lens module 12
On 2.
Second embodiment
First, refer to shown in Fig. 6 to Fig. 7, and please be in good time as shown in fig.1, the present invention second
Embodiment provides a kind of focusing method, and it comprises the following steps.As indicated in step sloo：There is provided one
Focusing mechanism L, focusing mechanism L include a liquid lens module 11 and an optical lens module 12.
Specifically, liquid lens module 11 has the multiple first default focusing section F1, optical lens mould
Block 12 has the multiple second default focusing section F2.Preferably, in the step s 100 can be further
An Image intake device 2 is provided, Image intake device 2 can be with liquid lens module 11 and optical lens
Module 12 is corresponding to be set, to absorb the image of object.
Hold above-mentioned, a control device 4, control device 4 can also be further provided in the step s 100
Image intake device 2 and focusing mechanism L are electrically coupleable to, is adjusted and (adjusted with the image according to object
System) liquid lens module 11 focal length and the focal length of optical lens module 12.In addition, image capturing
Device 2 can also adjust the focal length and optical lens module of liquid lens module 11 in control device 4
During 12 focal length, the image of continuous ingestion object.
It should be noted that, arithmetic element (figure is not illustrated) is also contains in control device 4, with to projection
Image on Image intake device 2 is judged, to learn whether current image is clear.Change sentence
Talk about, definition can utilize the concept of camera lens resolving power (Resolution) by control device 4, with
Modulation conversion method (Modulation Transfer Method, MTF) as image definition algorithm,
The contrast (Contrast) and sharpness (Sharpness) numerical value of image are calculated to be used as definition number
Judgment mode, i.e. the definition (Y direction) shown in Fig. 6, can as sharpness numerical value.
Furthermore it is preferred that a focus adjuster 3 can also be further provided in the step s 100.
Focus adjuster 3 can be arranged on optical lens module 12 or Image intake device 2, and burnt
Control device 4 is electrically connected to away from adjusting apparatus 3, and by the control of control device 4, and change light
Learn the focal length of lens module 12.It should be noted that, lens assembly 1, Image intake device 2, focal length
The concrete structure of adjusting apparatus 3 and control device 4, as described in aforementioned first embodiment, herein
Appearance is no longer described in detail.
Whereby, the focal length and optical lens of current liquid lens module 11 are judged by control device 4
The focal length of module 12, and obtain correct image of focusing.In other words, if image edge have it is bright
Bigger represent of the difference value or Grad of its grey decision-making is absorbed between aobvious change, adjacent pixel
Image be clear picture.Using these characteristics, the image that Image intake device 2 is absorbed,
By the processing of control device 4, the definition numerical information as criterion can be obtained.In addition,
There is fuzzy phenomenon in image, it is also possible to which, because of the deficiency of position image medium-high frequency signal, low frequency energy is more,
Can be tried to achieve by the frequency domain filtering method of high-pass filter after image high-frequency information, as judgement according to
According to.Furthermore, for example, for the embodiment of the present invention, control device 4 can be a microcontroller
Device (Microcontroller Unit, MCU), the right present invention is not limited.In addition, control device
4 can also by judge image whether clearly during, control liquid lens module 11 and optical lens
The focal distance of mirror module 12 should zoom out or further.
Then, as shown in step S102：The focal length of liquid lens module 11 is adjusted, to cause liquid
Lens module 11 is focused in the scope of a coarse focus adjustment section R.Specifically, also referring to figure
Shown in 8, for second embodiment of the invention, in step s 102, include step S1021：
Detect distance of the object relative to focusing mechanism L, and step S1022：Adjust liquid lens module
The scope of 11 focal length to a coarse focus adjustment section R.
Specifically, as shown in step S1021, general focusing mode can be divided into two kinds, open loop
Formula (open loop) is closed-circuit (close loop), for second embodiment, the focusing used
Mode is opens loop-type, i.e. can first with Laser rangefinder, infrared ambulator, radar, sound wave,
After the means detecting distance of the object relative to focusing mechanism L such as progress such as ultrasonic (for example：Using looking into
Table method (look up table)), focused further according to this distance and (step S1022 please be join).In addition,
Closed-circuit will be applied in example when back segment the 3rd and will be introduced.
Then, can be according to gained in step S1021 in step S1022 as shown in step S1022
Distance of the object arrived relative to focusing mechanism L, and the focal length of liquid lens module 11 is adjusted, with
So that object is located in coarse focus adjustment section R.Specifically, it can be changed by the control of control device 4
Become the focal length of liquid lens module 11, can cause liquid lens module 11 focus in one of them the
As the scope of a coarse focus adjustment section R in one default focusing section F1, to cause object is located at thick
Adjust in focusing section R.In other words, coarse focus adjustment section R is the multiple first default focusing sections
In F1, one of them first default focusing section of the image of the object with optimal images definition
F1。
Hold above-mentioned, refer to shown in Fig. 6, liquid lens module 11 can have pre-designed
Multiple first default focusing section F1, each first different default focusing section F1 has respectively
Multiple second default focusing section F2.In addition, the image for clear object of focusing, can have higher
Definition.It therefore, it can first pass through the rapid focus energy that liquid lens module 11 itself has
Power, focuses on the about position of object, i.e. liquid lens module 11 is focused in coarse focus adjustment area
In section R, and position where object can be located in coarse focus adjustment section R.Whereby, control device 4
The distance that can be detected according to abovementioned steps S1021, the focal length of regulation liquid lens module 11,
To cause object to be located in coarse focus adjustment section R.It should be noted that, in regulation liquid lens module
, can be by the image of the continuous ingestion object of Image intake device 2 during 11, and pass through and control dress
Put 4 computing and judgment object image whether be located at coarse focus adjustment section R in the range of.Work as object
It is when being located in coarse focus adjustment section R, then to carry out step S104 to adjust optical lens module 12
Focal length the step of.
Then, as shown in step S104：The focal length of optical lens module 12 is adjusted, to cause optics
Lens module 12 is focused in fine tuning focusing section D scope.Specifically, due to abovementioned steps
So that liquid lens module 11 to be focused in the image of object with optimal images definition in S102
One of them first default focusing section F1, i.e. coarse focus adjustment section R.Whereby, can be in coarse adjustment
Focus in section R, the focal length of optical lens module 12 is adjusted, to cause 12 pairs of optical lens module
The burnt section D that focused in one of them second default focusing section F2 as fine tuning scope, with
So that object is located in fine tuning focusing section D on either fine tuning focusing section D.In other words,
Fine tuning focusing section D can be to the correct focusing section of object focusing, i.e. fine tuning focusing section D
For in coarse focus adjustment section R, the image of the object with optimal images definition one of them
Two default focusing section F2.
Furthermore it is preferred that in step S104, being focused in order that obtaining optical lens module 12 in it
In a section D of being focused as a fine tuning the second default focusing section F2, i.e. to cause optics
Lens module 12 is focused in object, can to obtain the image of the object with optimal images definition
With the image of the continuous ingestion object in the step of adjusting the focal length of optical lens module 12, to judge
Whether object is located in fine tuning focusing section D.Meanwhile, optical lens module 12 can be adjusted by focal length
The computing of the driving of engagement positions 3, the image being projected on Image intake device 2 and control device 4,
And then auto-focusing is carried out in coarse focus adjustment section R, to cause object to be located at fine tuning focusing section D
On interior or fine tuning focusing section D.
Whereby, whether control device 4 can be located in fine tuning focusing section D according to object image object,
When object is located in fine tuning focusing section D, step S106 can be further performed.When object not
It is when being located in fine tuning focusing section D, then to continue to adjust optical lens module 12 to object progress pair
Jiao, until optical lens module 12 is focused in fine tuning focusing section D scope.
Then, as shown in step S106：Absorb object image.For example, due to optical lens
Module 12 has been focused object, therefore object can be taken pictures, and then absorbs object image.However,
It should be noted that, step S106 is the execution of selectivity, in some embodiments, can only be held
Row arrives step S104, depending on user's demand.
3rd embodiment
First, refer to shown in Fig. 7 and Fig. 9, from Fig. 9 and Fig. 8 comparison, the present invention the
The three embodiments difference maximum with second embodiment is：3rd embodiment is the side using closed-circuit
Formula is focused.It should be noted that, due to step S100, step S104 and step S106 with
Aforementioned second embodiment is similar, refers to the content of second embodiment, holds repeating no more herein.
Refer to shown in Fig. 9, such as shown in step S102 '：Adjust (modulation) liquid lens module 11
Focal length, to cause liquid lens module 11 to focus in the scope of a coarse focus adjustment section R.It is specific next
Say, for third embodiment of the invention, in step S102 ', include step S1021'：Liquid
The focusing section F1 default to multiple first of state lens module 11 carries out focal distance scanning, and step
S1022'：The focal length of liquid lens module 11 is adjusted to the scope of a coarse focus adjustment section R.Whereby,
Focal distance scanning is carried out by the focusing section F1 default to multiple first of liquid lens module 11, with
So that liquid lens module 11 is focused in coarse focus adjustment section R.
Specifically, also referring to shown in Fig. 6, and with reference to shown in step S1021', liquid lens
Module 11 can coordinate control device 4 and Image intake device 2 and focusing sections are preset to multiple first
Carry out focal distance scanning.For example, liquid lens module 11 can determine whether what is scanned at present
Slope value size in first acquiescence focusing section F1, to differentiate that definition is to become better and better or get over
Come poorer.
Then, as shown in step S1022', it can be carried out according to the multiple first default focusing section F1
The result of focal distance scanning, the focal length of regulation liquid lens module 11, to cause liquid lens mould
The focusing of block 11 to coarse focus adjustment section R scope.In other words, the fortune of control device 4 is passed through
Calculate, liquid lens module 11 can be made to focus in coarse focus adjustment section R, and then carry out follow-up
Step.
Whereby, whether coarse focus adjustment section R can be located at by the computing of control device 4, judgment object
Interior, when object is located in coarse focus adjustment section R, optical lens mould is adjusted in control device 4
The step of focal length of block 12, and when object is not located in coarse focus adjustment section R, control device
4 are continued to adjust liquid lens module 11 to the multiple first default focusing section F1 progress to scanning.
The beneficial effect of embodiment
In summary, beneficial effects of the present invention can be, the focusing that the embodiment of the present invention is provided
Device L and its focusing method, can be fast first with the translational speed of liquid lens module 11 and regulation is burnt
Away from the big characteristic of displacement (focusing plane adjustment time is quick, about exists<10ms grades), grown away from
From movement, focused with rough in the coarse focus adjustment section R for including object.
Then, then sharp optical lens module 12 is carried out in the range of coarse focus adjustment section R to object
Focusing, and using the accurate focusing accuracy of optical lens module 12, to cause optical lens
Module 12 is focused in fine tuning focusing section D.Whereby, liquid lens module 11 and optical lens are passed through
Both the sequentially actions of mirror module 12 can carry out rapid focus to object.That is, first with liquid lens
Module 11 is quickly moved to coarse focus adjustment section R so that optical lens module 12 is only needed in coarse adjustment
Movement to carrying out small range in the section R of suburb.Therefore, the focal length of driving optical lens module 12 is adjusted
The displacement of engagement positions 3 can be smaller, it is to avoid causes the vibrations of optical lens module 12, and driving light
The translational speed for learning lens module 12 can also be more quick.
The preferred possible embodiments of the present invention are the foregoing is only, non-therefore the limitation present invention right will
The protection domain asked, all equivalence techniqueses all done with description of the invention and accompanying drawing content become
Change, in the scope of the claims for being both contained in the present invention.
Claims (10)
1. a kind of focusing method, it is characterised in that the focusing method includes：
A focusing mechanism is provided, the focusing mechanism includes a liquid lens module and a light
Lens module is learned, wherein the liquid lens module has the multiple first default focusing sections,
The optical lens module has the multiple second default focusing sections；
One object of correspondence, adjusts the focal length of the liquid lens module, to cause the liquid
Lens module is focused in one described first default focusing section as a coarse focus adjustment section
Scope, whereby cause the object image be located at the coarse focus adjustment section in the range of；
And
In the coarse focus adjustment section, the focal length of the optical lens module is adjusted, so that
Obtain the optical lens module and focus thin as one in one described second default focusing section
The scope of focusing section is adjusted, causes the image of the object to be located at fine tuning focusing area whereby
In the range of section；
Wherein, during the coarse focus adjustment section is the multiple described first default focusing sections, have
There is one described first default focusing section of the image of optimal images definition.
2. focusing method as claimed in claim 1, it is characterised in that adjusting the liquid lens
In the step of focal length of module, still further comprise：
Detect distance of the object relative to the focusing mechanism；And
The distance according to the object relative to the focusing mechanism, adjusts the liquid
The focal length of lens module, to cause the object to be located in the coarse focus adjustment section.
3. focusing method as claimed in claim 2, it is characterised in that adjusting the optical lens
In the step of focal length of module, the optical lens module enters in the coarse focus adjustment section
Row auto-focusing, to cause the object to be located in fine tuning focusing section.
4. focusing method as claimed in claim 1, it is characterised in that adjusting the liquid lens
In the step of focal length of module, still further comprise：
Focal distance scanning is carried out to the multiple described first default focusing sections；And
According to the result that the multiple described first default focusing sections are carried out with focal distance scanning,
The focal length of the liquid lens module is adjusted to the scope of the coarse focus adjustment section.
5. focusing method as claimed in claim 4, it is characterised in that adjusting the optical lens
In the step of focal length of module, the optical lens module enters in the coarse focus adjustment section
Row auto-focusing, to cause the object to be located in fine tuning focusing section.
6. focusing method as claimed in claim 1, it is characterised in that the fine tuning focusing section is
In multiple described second default focusing sections, one of the image with optimal images definition
Described second default focusing section.
7. focusing method as claimed in claim 1, it is characterised in that the focusing mechanism is being provided
The step of in, still further comprise：
An Image intake device is provided, to absorb an image of the object；And
One control device is provided, it is saturating to adjust the liquid according to the image of the object
The focal length of the focal length of mirror module and the optical lens module.
8. focusing method as claimed in claim 7, it is characterised in that in Image intake device regulation
In the step of focal length of the liquid lens module and in the regulation optical lens module
Focal length the step of in, still further comprise：
The image of object described in continuous ingestion.
9. focusing method as claimed in claim 8, it is characterised in that the control device is according to institute
The image for stating object judges whether the object is located in the coarse focus adjustment section, or
It is to judge whether the object is located in fine tuning focusing section, when the object is to be located at
When in the coarse focus adjustment section, the step of the focal length of the regulation optical lens module is performed
Suddenly, when the object is not located in the coarse focus adjustment section, continue to adjust the liquid
State lens module.
10. a kind of focusing mechanism, it is characterised in that the focusing mechanism includes：
One lens assembly, the lens assembly includes：
One liquid lens module, wherein the liquid lens module includes a liquid lens unit；
One optical lens module, the optical lens module and the liquid lens module are each other
It is corresponding to set, wherein the optical lens module includes an optical lens unit；And
One central axis, the central axis passes through the liquid lens module and the optics
Lens module；
One Image intake device, the Image intake device and the lens assembly are relative to each other
It should set；
One focus adjuster, the focus adjuster is arranged at the optical lens module
Or on the Image intake device, to drive the optical lens module or the image to take the photograph
Device is taken, and changes the focal length of optical lens module；And
One control device, the control device is electrically connected to the lens assembly, the image
Capturing apparatus and the focus adjuster, to control the liquid lens module and the light
Learn the focal length of lens module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610186005.7A CN107241545A (en) | 2016-03-29 | 2016-03-29 | Focusing method and focusing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610186005.7A CN107241545A (en) | 2016-03-29 | 2016-03-29 | Focusing method and focusing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107241545A true CN107241545A (en) | 2017-10-10 |
Family
ID=59983135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610186005.7A Pending CN107241545A (en) | 2016-03-29 | 2016-03-29 | Focusing method and focusing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107241545A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109361876A (en) * | 2018-12-20 | 2019-02-19 | 广州医软智能科技有限公司 | Focusing circuit, method and microcirculation imaging device |
| CN109714581A (en) * | 2018-12-26 | 2019-05-03 | 深圳市橙子数字科技有限公司 | The Atomatic focusing method of projector |
| WO2019129061A1 (en) * | 2017-12-27 | 2019-07-04 | 华为技术有限公司 | Lens module and lens module control method |
| WO2019178917A1 (en) * | 2018-03-21 | 2019-09-26 | 爱佩仪（东莞）光电科技有限公司 | Voice coil motor for driving liquid lens and lens set thereof |
| CN110557535A (en) * | 2019-09-02 | 2019-12-10 | Oppo广东移动通信有限公司 | Camera module and terminal equipment |
| CN112532968A (en) * | 2019-09-18 | 2021-03-19 | 华为技术有限公司 | Surface shape calibration method for liquid lens in lens module |
| EP3882685A4 (en) * | 2018-12-13 | 2022-01-26 | Ningbo Sunny Opotech Co., Ltd. | Photographing module having liquid lens and image surface correcting method therefor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1417634A (en) * | 2001-10-31 | 2003-05-14 | 金宝电子工业股份有限公司 | Automatic focusing method of camera |
| CN1764869A (en) * | 2003-03-28 | 2006-04-26 | 索尼株式会社 | Camera system, camera and interchangeable lens |
| CN101056360A (en) * | 2006-04-13 | 2007-10-17 | 普立尔科技股份有限公司 | Zooming camera module of the hand-held action device |
| CN101498823A (en) * | 2008-01-28 | 2009-08-05 | 鸿富锦精密工业（深圳）有限公司 | Camera module group |
| CN101988984A (en) * | 2009-08-05 | 2011-03-23 | 财团法人工业技术研究院 | Automatic focusing lens module |
| CN103605262A (en) * | 2004-06-09 | 2014-02-26 | 尼康股份有限公司 | Exposure apparatus and device production method |
-
2016
- 2016-03-29 CN CN201610186005.7A patent/CN107241545A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1417634A (en) * | 2001-10-31 | 2003-05-14 | 金宝电子工业股份有限公司 | Automatic focusing method of camera |
| CN1764869A (en) * | 2003-03-28 | 2006-04-26 | 索尼株式会社 | Camera system, camera and interchangeable lens |
| CN103605262A (en) * | 2004-06-09 | 2014-02-26 | 尼康股份有限公司 | Exposure apparatus and device production method |
| CN101056360A (en) * | 2006-04-13 | 2007-10-17 | 普立尔科技股份有限公司 | Zooming camera module of the hand-held action device |
| CN101498823A (en) * | 2008-01-28 | 2009-08-05 | 鸿富锦精密工业（深圳）有限公司 | Camera module group |
| CN101988984A (en) * | 2009-08-05 | 2011-03-23 | 财团法人工业技术研究院 | Automatic focusing lens module |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019129061A1 (en) * | 2017-12-27 | 2019-07-04 | 华为技术有限公司 | Lens module and lens module control method |
| US11340421B2 (en) | 2017-12-27 | 2022-05-24 | Huawei Technologies Co., Ltd. | Lens module and lens module control method |
| WO2019178917A1 (en) * | 2018-03-21 | 2019-09-26 | 爱佩仪（东莞）光电科技有限公司 | Voice coil motor for driving liquid lens and lens set thereof |
| EP3882685A4 (en) * | 2018-12-13 | 2022-01-26 | Ningbo Sunny Opotech Co., Ltd. | Photographing module having liquid lens and image surface correcting method therefor |
| CN109361876A (en) * | 2018-12-20 | 2019-02-19 | 广州医软智能科技有限公司 | Focusing circuit, method and microcirculation imaging device |
| CN109714581A (en) * | 2018-12-26 | 2019-05-03 | 深圳市橙子数字科技有限公司 | The Atomatic focusing method of projector |
| CN109714581B (en) * | 2018-12-26 | 2021-04-06 | 深圳市橙子数字科技有限公司 | Automatic focusing method of projector |
| CN110557535A (en) * | 2019-09-02 | 2019-12-10 | Oppo广东移动通信有限公司 | Camera module and terminal equipment |
| CN112532968A (en) * | 2019-09-18 | 2021-03-19 | 华为技术有限公司 | Surface shape calibration method for liquid lens in lens module |
| CN112532968B (en) * | 2019-09-18 | 2021-09-14 | 华为技术有限公司 | Surface shape calibration method for liquid lens in lens module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107241545A (en) | Focusing method and focusing mechanism | |
| CN107529011B (en) | A kind of motorized zoom lens control method | |
| US8325265B2 (en) | Camera module having extended depth of focus mode and autofocus mode and method of operating the same | |
| Nagahara et al. | Flexible depth of field photography | |
| CN104980644B (en) | A kind of image pickup method and device | |
| CN110913096A (en) | Camera module and electronic equipment | |
| KR101888956B1 (en) | Camera module and auto-focusing method thereof | |
| CN105827922A (en) | Image shooting device and shooting method thereof | |
| JP2000188712A5 (en) | ||
| CN103945133B (en) | Auto-focus device and method for visible light lens | |
| CN104902190A (en) | Control method, photographic device and electronic device | |
| JP4094458B2 (en) | Image input device | |
| WO2007024709A3 (en) | Cellular phone camera with three-dimensional imaging function | |
| CN103529543A (en) | Automatic microscope focusing method | |
| CN107390356A (en) | The method focused on automatically based on representation of laser facula | |
| CN107249089A (en) | Filming apparatus and method, video camera and logistics capturing system | |
| CN106154688A (en) | A kind of method and device of auto-focusing | |
| CN106814437A (en) | A kind of camera head and its manufacture method, mobile terminal | |
| US11039117B2 (en) | Dual lens imaging module and capturing method thereof | |
| CN106303199A (en) | focusing system and focusing method | |
| CN115379116A (en) | Image acquisition method, electronic device, and computer-readable storage medium | |
| CN113176696B (en) | Automatic focusing method, device and system for lens | |
| CN111308741B (en) | Small concave imaging device and imaging method based on liquid crystal lens | |
| CN114080565B (en) | System and method for obtaining ultra-macro images | |
| KR20100009169A (en) | Method and apparatus for auto focusing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171010 |
|
| WD01 | Invention patent application deemed withdrawn after publication |