CN106686373A - Automatic focusing test system and method - Google Patents
Automatic focusing test system and method Download PDFInfo
- Publication number
- CN106686373A CN106686373A CN201610283328.8A CN201610283328A CN106686373A CN 106686373 A CN106686373 A CN 106686373A CN 201610283328 A CN201610283328 A CN 201610283328A CN 106686373 A CN106686373 A CN 106686373A
- Authority
- CN
- China
- Prior art keywords
- focusing
- step pitch
- moving step
- interval
- measured
- 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.)
- Granted
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 124
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000000571 coke Substances 0.000 claims description 19
- 238000010998 test method Methods 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 2
- 210000004556 brain Anatomy 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/002—Diagnosis, testing or measuring for television systems or their details for television cameras
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Automatic Focus Adjustment (AREA)
- Studio Devices (AREA)
Abstract
The application discloses an automatic focusing test system and a method, wherein the automatic focusing test system is used for testing an image module to be tested and comprises a fixed test scene and a focusing control device. The image module to be tested is arranged in a fixed test scene. The focusing control device comprises a processing module, a setting module and a control module. The processing module generates a middle threshold position according to a default initial position and an optimal focusing position. A first focusing interval is formed between the default starting position and the middle threshold position, and a second focusing interval is formed between the middle threshold position and the optimal focusing position. The setting module sets a first focusing moving step distance of the image module to be detected in the first focusing interval and sets a second focusing moving step distance of the image module to be detected in the second focusing interval, wherein the first focusing moving step distance is larger than the second focusing moving step distance. The control module controls the image module to be tested to perform focusing test according to the first focusing moving step and the second focusing moving step. The invention makes the testing process faster and more accurate.
Description
Technical field
The present invention relates to a kind of test system, particularly relates to a kind of auto-focusing test system and side
Method.
Background technology
At present auto-focusing (Auto Focus, abbreviation AF) test mode, is by controlling mirror
Head is moved to multiple diverse locations, and by algorithm calculate those positions of correspondence to coke number
(focus value), to learn definition of the current camera lens in the image captured by each position.Its
In it is bigger to coke number, the definition of image is higher.Therefore, camera lens is producing maximum to coke number
Position is optimal focusing position.
However, in known test process, if the spacing setting of camera lens movement is excessive, easily
Cause to miss the maximum position to coke number, and lead to not look for correct optimal focusing position.
Therefore, all it is that to control each with less moving interval tested at present in auto-focusing test
Camera lens is moved, to avoid affecting the accuracy of test.But comparatively, because camera lens is at each
Position all must be calculated once to coke number.Therefore, moving interval is little can cause calculative position
Put many and increase the testing time.This camera lens bigger or tested for focusing test scope is more
For, the time spent by it is even more surprising.
The content of the invention
In view of the problems referred to above, in one embodiment.A kind of auto-focusing test system is provided,
To test an image module to be measured.Auto-focusing test system include fixed test scene with it is right
Burnt control device.Image module to be measured is arranged in fixed test scene.Focusing control apparatus bag
Include processing module, setting module and control module.Processing module is according to acquiescence original position and most
Good focusing position produces middle door position, wherein optimal focusing position exists for standard video module
The maximum position to coke number is produced with the focusing of standard moving step pitch in fixed test scene, acquiescence
The first focusing is formed between original position and middle door position interval, middle door position with most
The second focusing is formed between good focusing position interval.Setting module sets image module to be measured in the
The first interval focusing moving step pitch of one focusing, and image module to be measured is set in the second focusing
The second interval focusing moving step pitch, the first focusing moving step pitch is more than the second focusing moving step pitch
With standard moving step pitch.Control module controls image module to be measured according to the first focusing moving step pitch
Focusing test is carried out with the second focusing moving step pitch.
Further, first focusing is interval interval more than second focusing.
Further, the second focusing moving step pitch is equal to or less than the standard moving step pitch, should
The distance between middle door position and the optimal focusing position more than the standard moving step pitch away from
From.
Further, the focusing control apparatus also include a detection module, the detection module detection
One initial lens location of the image module to be measured, when the initial lens location is not in the acquiescence
Beginning position and the optimal focusing position between when, the control module control the image module to be measured with
One adjustment step pitch is moved in the first focusing interval by the initial lens location.
Further, the adjustment step pitch and the middle door position and the difference of the acquiescence original position
Value is directly proportional.
Further, the adjustment step pitch is represented with following equation：
S1=(X1+X2)/2；
Wherein, S1 is the adjustment step pitch, and X1 is the optimal focusing position and the acquiescence start bit
The difference put, X2 is the difference of the middle door position and the acquiescence original position.
Further, the processing module is also according to the acquiescence original position and the optimal focusing position
Produce one and set door position, it is optimal with this that the setting door position is located at the middle door position
Between focusing position, make to form one the 3rd between the setting door position and the optimal focusing position
Focusing is interval, the setting module set the image module to be measured in the 3rd focusing it is interval one the
Three focusing moving step pitchs, wherein the second focusing moving step pitch are more than the 3rd focusing moving step pitch,
The control module more controls the image module to be measured and is focused according to the 3rd focusing moving step pitch
Test.
Further, the 3rd focusing moving step pitch is equal to or less than the standard moving step pitch, should
The distance between setting door position and the optimal focusing position more than the standard moving step pitch away from
From.
Further, first focusing is interval interval more than second focusing, the second focusing area
Between it is interval more than the 3rd focusing.
Further, the fixation test scene include a casing, one focusing main body, a light source and
One test loaded tool, the focusing main body, the light source and the test loaded tool are arranged in the casing, and
There is a constant spacing, the light source makes the box house between the test loaded tool and the focusing main body
Maintain a constant brightness.
In one embodiment, there is provided a kind of auto-focusing method of testing, including to obtain one optimal right
Burnt position, wherein optimal focusing position be standard video module in fixed test scene with standard
Moving step pitch is focused and produces maximum position to coke number, right with optimal according to acquiescence original position
Burnt position produces middle door position, wherein shape between acquiescence original position and middle door position
It is interval into the first focusing, the second focusing area is formed between middle door position and optimal focusing position
Between, set image module to be measured in the first interval focusing moving step pitch of the first focusing, setting is treated
Image module is surveyed in the second interval focusing moving step pitch of the second focusing, wherein the first focusing movement
Step pitch is located at fixed test scene more than the second focusing moving step pitch with standard moving step pitch, control
In image module to be measured according to first focus moving step pitch with second focus moving step pitch carry out it is right
Jiao's test.
Further, before the step of one optimal focusing position of acquirement, also include：According to the mark
The depth of field of quasi- image module produces the standard moving step pitch.
Further, the control is located at the image module foundation to be measured in the fixation test scene
Before the step of first focusing moving step pitch carries out focusing test with the second focusing moving step pitch,
Also include：An initial lens location of the image module to be measured is detected, when the initial lens location
When not between the acquiescence original position and the optimal focusing position, the image module to be measured is controlled
It is moved in the first focusing interval by the initial lens location with an adjustment step pitch.
Further, the adjustment step pitch and the middle door position and the difference of the acquiescence original position
Value is directly proportional.
Further, also include：
The adjustment step pitch is calculated with following equation：
S1=(X1+X2)/2；
Wherein, S1 is the adjustment step pitch, and X1 is the optimal focusing position and the acquiescence start bit
The difference put, X2 is the difference of the middle door position and the acquiescence original position.
Further, also include：
One is produced according to the acquiescence original position and the optimal focusing position set door position, its
In the setting door position be located between the middle door position and the optimal focusing position, make this
One the 3rd focusing is formed between setting door position and the optimal focusing position interval；
The image module to be measured is set in one the 3rd interval focusing moving step pitch of the 3rd focusing,
Wherein the second focusing moving step pitch is more than the 3rd focusing moving step pitch；And
Control the image module to be measured carries out focusing test according to the 3rd focusing moving step pitch.
Further, the control is located at the image module foundation to be measured in the fixation test scene
After the step of first focusing moving step pitch carries out focusing test with the second focusing moving step pitch,
Also include：
Export an actual optimal focusing position of the image module to be measured；And
The optimal focusing position of the reality is compared with the optimal focusing position and a test result is exported.
Thus, the embodiment of the present invention be using a standard video module in fixed test scene with
Standard moving step pitch focuses to obtain the optimal focusing position of the fixed test scene of camera lens correspondence.Again
The door position in the middle of setting between optimal focusing position and acquiescence original position.And control to be measured
Image module moves to the step pitch of middle door position more than image mould to be measured by original position is given tacit consent to
Block is moved to the step pitch and standard video module pair of optimal focusing position by middle door position
Standard moving step pitch when burnt.Reaching makes test process more quick and accuracy that is maintaining test.
Description of the drawings
By reading retouching in detail with reference to being made to non-limiting example of being made of the following drawings
State, other features, objects and advantages will become more apparent upon：
Fig. 1 is the plane rack composition of the embodiment of auto-focusing test system one of the present invention；
Fig. 2 is the block hardware diagram of the embodiment of auto-focusing test system one of the present invention；
Fig. 3 is the focusing curve map of the embodiment of standard video module one of the present invention；
Fig. 4 is the focusing schematic diagram of the embodiment of auto-focusing test system one of the present invention；
Fig. 5 is the focusing schematic diagram of another embodiment of auto-focusing test system of the present invention；
The step of Fig. 6 is auto-focusing method of testing first embodiment of the present invention flow chart；
The step of Fig. 7 is auto-focusing method of testing second embodiment of the present invention flow chart；
The step of Fig. 8 is auto-focusing method of testing 3rd embodiment of the present invention flow chart；
The step of Fig. 9 is auto-focusing method of testing fourth embodiment of the present invention flow chart.
In figure：
1 auto-focusing test system
2 image modules to be measured
3 standard video modules
10 fix test scene
11 casings
12 focusing main bodys
13 light sources
14 test loaded tools
20 focusing control apparatus
21 processing modules
22 setting modules
23 control modules
24 detection modules
S gives tacit consent to original position
Door position in the middle of M
M1 setting doors position
The optimal focusing positions of B
F1 first focuses interval
F2 second focuses interval
The focusings of F3 the 3rd are interval
The depth of field of S00 establishing criteria image modules produces standard moving step pitch
S01 obtains an optimal focusing position
S02 produces middle door position, acquiescence according to acquiescence original position and optimal focusing position
The first focusing is formed between original position and middle door position interval, middle door position with most
The second focusing is formed between good focusing position interval
S03 sets image module to be measured in the first interval focusing moving step pitch of the first focusing, if
Image module to be measured is determined in the second interval focusing moving step pitch of the second focusing, wherein the first focusing
Moving step pitch is more than the second focusing moving step pitch and standard moving step pitch
S04 detects the initial lens location of image module to be measured
S05 judge initial lens location whether acquiescence original position and optimal focusing position it
Between
S06 controls image module to be measured and is moved to the by initial lens location with an adjustment step pitch
In one focusing interval
The image module to be measured that S07 controls are located in fixed test scene is moved according to the first focusing
Dynamic step pitch carries out focusing test with the second focusing moving step pitch
S08 exports the actual optimal focusing position of image module to be measured
S09 compares reality, and most preferably focusing position is with optimal focusing position and outputs test result.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is appreciated that
, specific embodiment described herein is used only for explaining related invention, rather than to this
Bright restriction.It also should be noted that, for the ease of description, illustrate only in accompanying drawing with
The related part of invention.
It should be noted that the embodiment and embodiment in the case where not conflicting, in the application
In feature can be mutually combined.Below with reference to the accompanying drawings and in conjunction with the embodiments describing this in detail
Application.
Fig. 1 and Fig. 2 be the embodiment of auto-focusing test system one of the present invention plane rack composition with
Block hardware diagram.Please join shown in Fig. 1 and Fig. 2, in one embodiment, auto-focusing test system
System 1 is to test image module to be measured 2, that is, image module to be measured 2 is carried out automatically
Focusing test.Auto-focusing test system 1 includes fixed test scene 10 with focusing control dress
20 are put, image module to be measured 2 is provided in fixing in test scene 10.In one embodiment,
Image module to be measured 2 is the camera lens of Telescopic movable and electrically connects a driver (such as voice coil loudspeaker voice coil horse
Up to), to be displaced into diverse location by driver control image module 2 to be measured.
As shown in figure 1, in one embodiment, fixed test scene 10 be include casing 11,
Focusing main body 12, light source 13 and test loaded tool 14, main body 12 of focusing, light source 13 and test
Carrier 14 is disposed in casing 11, and is had between test loaded tool 14 and focus image 12
Constant spacing, light source 13 makes the inside of casing 11 maintain the constant brightness, image module to be measured 2 to be
It is removably disposed on test loaded tool 14, can self-test after having tested image module to be measured 2
The dismounting of carrier 14 is removed, and to change another group of image module to be measured 2 auto-focusing test is carried out.
Accordingly, the camera lens being installed in fixed test scene 10 can be in identical test environment (example
Such as identical brightness, shooting direction, subject and camera lens with focusing main body 12 distance)
Under carry out auto-focusing program.In one embodiment, focus main body 12 can for sun test image,
Cube test image, stereoscopic article or photo etc..And light source 13 can be to be arranged on focusing main body 12
The backlight module at rear is arranged at the light fixture of other positions.
Focusing control apparatus 20 include processing module 21, setting module 22 and control module 23.
As shown in figure 1, in one embodiment, focusing control apparatus 20 can be a server host or
Central processing unit.Processing module 21, setting module 22 and control module 23 can be respectively micro- electricity
Brain, processor or spy are realized with chip.In one embodiment, processing module 21, setting mould
Block 22 and control module 23 can be integrated in same circuit board or module, and this does not limit to.
Processing module 21 is to produce middle door according to acquiescence original position and optimal focusing position
Position, wherein optimal focusing position is a standard video module 3 in above-mentioned fixed test scene
The maximum position to coke number is produced with the focusing of standard moving step pitch in 10.In one embodiment,
Standard video module 3 controlled can be displaced into diverse location for the camera lens of Telescopic movable.Specifically
It, standard video module 3 is walked with standard movement in the test environment of fixed test scene 10
Away from carrying out auto-focusing program, that is, control standard video module 3 is with the shifting of standard moving step pitch
Move in a plurality of positions, and calculate each position to coke number.Maximum is wherein produced to coke number
Position be optimal focusing position (image i.e. captured by camera lens most clearly position).It is real one
In applying example, calculating the mode to coke number can pass through modulation transfer function (Modulation Transfer
Function, MTF) computing acquirement.
In one embodiment, above-mentioned standard moving step pitch is with the depth of field of standard video module 3
(before and after Depth of field, DOF, that is, lens focusing point relatively clearly areas imaging)
Calculate, in general, standard moving step pitch can not excessive (may not exceed areas imaging), it is no
Then easily cause and miss the maximum position to coke number, and lead to not look for correct optimal right
Burnt position, the calculation of standard moving step pitch is known technology, does not then add to repeat at this.
As shown in figure 3, in one embodiment, standard video module 3 is in fixed test scene 10
After carrying out auto-focusing program, a focusing curve 4 (focus profile) can be produced.In this enforcement
Example in, X-coordinate axle be represent arrive corresponding to lens location Dac (digital analog converter,
Digital to Analog Converter) value (here is 0 to 500Dac), and Y-coordinate axle is
Represent to coke number (here is 0 to 60000DN, Digital Number).It is right in this figure
Maximum shown by burnt curve 4 is 55000DN to coke number, and maximum is to arriving standard corresponding to coke number
The numerical value of the lens location (i.e. optimal focusing position) of image module 3 is 296Dac.Thus,
The optimal focusing position B of standard video module 3 can be obtained.
As shown in figure 4, in one embodiment, beginning of original position S for self-defining is given tacit consent to
The position of camera lens test is carried out, in this figure, giving tacit consent to the numerical value corresponding to original position S is
216Dac, processing module 21 is after optimal focusing position B is obtained, you can define shadow to be measured
(the numerical value 216Dac for giving tacit consent to original position S is arrived the auto-focusing test scope of picture module 2
The numerical value 296Dac of optimal focusing position B), and processing module 21 can be in acquiescence original position S
A middle door position M is defined between optimal focusing position B.Here, middle door position
It is 272Dac to put the numerical value corresponding to M.Acquiescence original position S is constituted with middle door position
One first focusing interval F1, middle door position M and optimal focusing position B is formed between M
Between formed one second focus interval F2.In certain embodiments, middle door position M can
To give tacit consent to the optional position between original position S and optimal focusing position B, such as middle door
Numerical value corresponding to the M of position can be 222Dac, 240Dac or 262Dac, this part not office
Limit.
In one embodiment, setting module 22 sets image module to be measured 2 in the first focusing interval
The one first focusing moving step pitch of F1, and image module 2 to be measured is set in the second focusing interval
The one second focusing moving step pitch of F2, wherein the first focusing moving step pitch is more than the second focusing movement
Step pitch and standard moving step pitch.Control module 23 controls image module to be measured 2 according to the first focusing
Moving step pitch and the second focusing moving step pitch carry out focusing test.In detail, image module to be measured
2 during auto-focusing is tested, when the position of image module to be measured 2 is positioned at the first focusing
It is that control image module 2 to be measured is moved to second pair with the first focusing moving step pitch during interval F1
Jiao interval F2, is then control when the position of image module to be measured 2 is in the second focusing interval F2
Make image module to be measured 2 and moved toward optimal focusing position B directions with the second focusing moving step pitch.
In one embodiment, control module 23 is electrically connected to the driving that image module to be measured 2 is connected
Device, to be moved by control driver control image module 2 to be measured.
In further example, it is assumed that the moveable minimum step of camera lens is 1Dac, then give tacit consent to
Beginning position S moves to optimal focusing position B with minimum step needs 80 steps.Based on this,
If the standard moving step pitch of standard video module 3 is 3Dac, setting module 22 can set
Image module to be measured 2 in first focusing interval F1 first focus moving step pitch be more than 3Dac,
Such as first focusing moving step pitch is 4Dac, 6Dac, 8Dac, 10Dac or 20Dac.And set
Fixed image module to be measured 2 is equal to standard in the second focusing moving step pitch of the second focusing interval F2
Moving step pitch.
Thus, all it was that each image module to be measured 2 is controlled with standard moving step pitch compared to the past
For carrying out the mode of auto-focusing test.The embodiment of the present invention is to first pass through standard video module
3 carry out focusing program and obtain optimal focusing position to define middle door position, reset
First focusing moving step pitch makes shadow to be measured more than the second focusing moving step pitch and standard moving step pitch
Add fast speed as moving step pitch of the module 2 in the fuzzyyer interval of image is larger, close
The interval of optimal focusing position controls again image module to be measured 2 with the movement of standard moving step pitch.With
Reach and the speed of testing lens is significantly increased, and avoid missing optimal focusing position and maintain test
Accuracy.
As shown in figure 4, in one embodiment, the first focusing interval F1 is interval more than the second focusing
F2.In other words, the distance of original position S to middle door position M is given tacit consent to more than middle door
The distance of position M to optimal focusing position B.Test mirrors are further speeded up thereby, it is possible to reach
The speed of head.
In one embodiment, image module to be measured 2 is moved in second focusing of the second focusing interval F2
Dynamic step pitch is also smaller than standard moving step pitch.Such as standard moving step pitch is 3Dac, and second focuses
Moving step pitch is 2Dac, to reach the purpose for further increasing accuracy.As shown in figure 4,
In one embodiment, the distance between middle door position M and optimal focusing position B is greater than mark
The distance of quasi- moving step pitch.That is, the second focusing interval F2 must be greater than standard movement
Step pitch, to avoid camera lens to be measured 2 from missing optimal focusing position B when moving.In one embodiment,
The distance between middle door position M and optimal focusing position B is at least above three or four marks
The distance of quasi- moving step pitch.
In one embodiment, focusing control apparatus 20 also include detection module 24, wherein examining
Surveying module 24 can be realized with micro computer, processor or spy with chip.Detection module 24 is detected
The initial lens location of image module to be measured 2, when initial lens location is not in acquiescence original position
When between optimal focusing position, control module 23 is controlled image module to be measured 2 and is walked with an adjustment
Away from be moved to by initial lens location the first focusing interval in.In one embodiment, such as Fig. 4 institutes
Show, it is assumed that the initial position of image module to be measured 2 is corresponding to be less than 216Dac, example to numerical value
Numerical value such as initial lens location is 200Dac, then control module 23 is more than with adjusting step pitch
17Dac controls the moved further of image module 2 one to be measured in the first focusing interval F1, then controls
Module 23 carries out focusing test according to the first focusing moving step pitch and the second focusing moving step pitch again,
Reach and avoid the initial lens location of image module to be measured 2 not in the test scope of auto-focusing
It is interior.
In one embodiment, wherein adjustment step pitch is and middle door position and acquiescence original position
Difference be directly proportional.That is, acquiescence original position is bigger to the distance of middle door position,
Then adjust step pitch bigger.In one embodiment, wherein adjustment step pitch can be represented with following equation：
S1=(X1+X2)/2, wherein S1 are adjustment step pitch, and X1 is optimal focusing position
With the difference of acquiescence original position, X2 is the difference of middle door position and acquiescence original position.
As shown in figure 4, in the present embodiment, it is 216Dac to give tacit consent to the numerical value corresponding to original position S,
Numerical value corresponding to middle door position M is 272Dac, corresponding to optimal focusing position B
Numerical value is 296Dac, therefore optimal focusing position is 80Dac with the difference of acquiescence original position, and
Middle door position is 56Dac with the difference of acquiescence original position, therefore adjustment step pitch can be by upper
Formula is calculated as 68Dac.
As shown in figure 5, in one embodiment, wherein processing module 21 is more according to acquiescence start bit
Put S and optimal focusing position B and produce setting door position M1, setting door position M1
Between middle door position M and optimal focusing position B, make setting door position M1 with
The 3rd focusing interval F3 is formed between optimal focusing position B, setting module 22 sets shadow to be measured
As module 2 is in the 3rd focusing moving step pitch of the 3rd focusing interval F3, wherein the second focusing movement
Step pitch more controls the foundation of image module to be measured 2 more than the 3rd focusing moving step pitch, control module 23
3rd focusing moving step pitch carries out focusing test program.In other words, processing module 21 can be in acquiescence
Multiple door positions are provided between original position S and optimal focusing position B and multiple focusings are formed
Interval, and image module to be measured 2, the closer to the interval of acquiescence original position S, its movement is walked
Away from bigger.
In one embodiment, above-mentioned first focusing moving step pitch is greater than the second focusing moving step pitch,
Second focusing moving step pitch is greater than the 3rd focusing moving step pitch, and the 3rd focusing moving step pitch is
Equal to standard moving step pitch.For example：Standard moving step pitch be 3Dac, the 3rd focusing moving step pitch
For 3Dac, the second focusing moving step pitch is 6Dac, and the first focusing moving step pitch is 10Dac.Such as
Shown in Fig. 5, in one embodiment, the first focusing interval F1 is greater than the second focusing interval F2,
Second focusing interval F2 is greater than the 3rd focusing interval F3, and to reach test speed is further speeded up
The purpose of degree.
As shown in fig. 6, the step of being auto-focusing method of testing first embodiment of the present invention flow process
Figure.Hardware configuration mentioned below can be compareed disclosed in above-mentioned auto-focusing test system 1,
First this chats bright.Auto-focusing method of testing includes：Obtain an optimal focusing position (step S01),
Middle door position is produced according to acquiescence original position and optimal focusing position, wherein acquiescence starting
The first focusing is formed between position and middle door position interval, middle door position is right with optimal
The second focusing interval (step S02) is formed between burnt position, image module 2 to be measured is set in the
The first interval focusing moving step pitch of one focusing, sets image module 2 to be measured in the second focusing area
Between the second focusing moving step pitch, wherein the first focusing moving step pitch is more than the mobile step of the second focusing
It is to be measured in fixed test scene 10 away from being located at standard moving step pitch (step S03), control
Image module 2 carries out focusing test according to the first focusing moving step pitch and the second focusing moving step pitch
(step S07).
In step S01, standard video module 3 is the test environment in fixed test scene 10
In auto-focusing program is carried out with standard moving step pitch, that is, controllable standard video module 3
A plurality of positions are displaced into standard moving step pitch, and calculate each position to coke number.Its
Middle generation maximum is that (image i.e. captured by camera lens is most clear for optimal focusing position to the position of coke number
Clear position).
In step S02, with a processing module 21 according to acquiescence original position and optimal focusing position
Door position in the middle of generation is put, and in certain embodiments, the first focusing interval is greater than second
Focusing is interval.In certain embodiments, the interval scope of the second focusing is greater than standard movement step
Away from distance.In one embodiment, step S02 more may include according to acquiescence original position with most
Good focusing position produces setting door position, and set door position be located at middle door position with
Between optimal focusing position, make to form the 3rd pair between setting door position and optimal focusing position
It is burnt interval.
In step S03, the second focusing moving step pitch can be equal to or less than standard moving step pitch.
In one embodiment, step S03 also includes that setting image module 2 to be measured is interval in the 3rd focusing
The 3rd focusing moving step pitch, wherein second focusing moving step pitch more than the 3rd focusing moving step pitch.
In step S07, image module to be measured 2 can be electrically connected to by a control module 23
The driver for being connected, to be moved by control driver control image module 2 to be measured.One
In embodiment, step S07 also includes control image module 2 to be measured according to the mobile step of the 3rd focusing
Away from carrying out focusing test program.
As shown in fig. 7, the step of being auto-focusing method of testing second embodiment of the present invention flow process
Figure.In the present embodiment, before step S07, also including detection image module 2 to be measured
Initial lens location (step S04), judge initial lens location whether in acquiescence original position and
Between optimal focusing position (step S05), if initial lens location is in acquiescence original position and most
Between good focusing position, then step S07 is directly entered, if initial lens location is not being given tacit consent to
Beginning position and optimal focusing position between, then control image module to be measured 2 with one adjustment step pitch by
Initial lens location is moved in the first focusing interval (step S06).If that is, to be measured
The initial lens location of image module 2 does not control to be measured in the test scope of auto-focusing, that is,
Image module 2 is moved in the first focusing interval, to control image module to be measured 2 according to first
Focusing moving step pitch and the second focusing moving step pitch carry out focusing test.
As shown in figure 8, the step of being auto-focusing method of testing 3rd embodiment of the present invention flow process
Figure.In the present embodiment, before step S01, also including establishing criteria image module 2
The depth of field produces standard moving step pitch (step S00).
As shown in figure 9, the step of being auto-focusing method of testing fourth embodiment of the present invention flow process
Figure.In the present embodiment, after step S07, also including output image module 2 to be measured
Actual optimal focusing position (step S08), the actual optimal focusing position of comparison and optimal focusing
Position simultaneously outputs test result (step S09).In one embodiment, actual optimal focusing position
A range of allowable error can be set between optimal focusing position, if actual optimal focusing position exists
When in the range of allowable error, then the test result of the 2-in-1 lattice of image module to be measured is exported.
Above description is only the preferred embodiment of the application and saying to institute's application technology principle
It is bright.It will be appreciated by those skilled in the art that invention scope involved in the application, does not limit
In the technical scheme of the particular combination of above-mentioned technical characteristic, at the same also should cover without departing from
In the case of the inventive concept, it is combined by above-mentioned technical characteristic or its equivalent feature
And other technical schemes for being formed.Such as features described above and (but not limited to) disclosed herein
The technical scheme that technical characteristic with similar functions is replaced mutually and formed.
Claims (17)
1. a kind of auto-focusing test system, to test an image module to be measured, its feature exists
In the auto-focusing test system includes：
One fixes test scene, and the image module to be measured is arranged in the fixation test scene；With
And
One focusing control apparatus, are electrically connected to the image module to be measured, the focusing control apparatus bag
Include：
One processing module, gives tacit consent to original position and produces in the middle of one with an optimal focusing position according to one
Door position, the wherein optimal focusing position are a standard video module in the fixation test scene
In position of the maximum to coke number is produced with standard moving step pitch focusing, the acquiescence start bit
Put that to form one first focusing between the middle door position interval, the middle door position with should
One second focusing is formed between optimal focusing position interval；
One setting module, sets the image module to be measured in one first pair of the first focusing interval
Burnt moving step pitch and the image module to be measured is set in interval one second pair of second focusing
Burnt moving step pitch, wherein the first focusing moving step pitch is more than the second focusing moving step pitch and is somebody's turn to do
Standard moving step pitch；And
One control module, controls the image module to be measured according to the first focusing moving step pitch and is somebody's turn to do
Second focusing moving step pitch carries out focusing test.
2. auto-focusing test system as claimed in claim 1, it is characterised in that this first
Focusing is interval interval more than second focusing.
3. auto-focusing test system as claimed in claim 1, it is characterised in that this second
Focusing moving step pitch is equal to or less than the standard moving step pitch, and the middle door position is optimal with this
Distance of the distance between the focusing position more than the standard moving step pitch.
4. auto-focusing test system as claimed in claim 1, it is characterised in that the focusing
Control device also includes a detection module, and the detection module is detected at the beginning of the one of the image module to be measured
Beginning lens location, when the initial lens location is not in the acquiescence original position and the optimal focusing position
When between putting, the control module controls the image module to be measured with an adjustment step pitch by the initial mirror
Head position is moved in the first focusing interval.
5. auto-focusing test system as claimed in claim 4, it is characterised in that the adjustment
Step pitch is directly proportional to the difference of the middle door position and the acquiescence original position.
6. the auto-focusing test system as described in claim 4 or 5, it is characterised in that should
Adjustment step pitch is represented with following equation：
S1=(X1+X2)/2；
Wherein, S1 is the adjustment step pitch, and X1 is the optimal focusing position and the acquiescence start bit
The difference put, X2 is the difference of the middle door position and the acquiescence original position.
7. auto-focusing test system as claimed in claim 1, it is characterised in that the process
Module also produces one and sets door position according to the acquiescence original position and the optimal focusing position,
The setting door position is located between the middle door position and the optimal focusing position, sets this
Determine to form one the 3rd focusing interval, the setting module between door position and the optimal focusing position
The image module to be measured is set in one the 3rd interval focusing moving step pitch of the 3rd focusing, wherein
The second focusing moving step pitch more controls this more than the 3rd focusing moving step pitch, the control module
Image module to be measured carries out focusing test according to the 3rd focusing moving step pitch.
8. auto-focusing test system as claimed in claim 7, it is characterised in that the 3rd
Focusing moving step pitch is equal to or less than the standard moving step pitch, and the setting door position is optimal with this
Distance of the distance between the focusing position more than the standard moving step pitch.
9. auto-focusing test system as claimed in claim 7, it is characterised in that this first
Focusing is interval interval more than second focusing, and second focusing is interval interval more than the 3rd focusing.
10. auto-focusing test system as claimed in claim 1, it is characterised in that this is consolidated
Test scene is determined including a casing, a focusing main body, a light source and a test loaded tool, the focusing
Main body, the light source and the test loaded tool are arranged in the casing, and the test loaded tool and the focusing
There is a constant spacing, the light source makes the box house maintain a constant brightness between main body.
11. a kind of auto-focusing method of testings, to test an image module to be measured, its feature
It is that the auto-focusing method of testing comprises the following steps：
An optimal focusing position is obtained, wherein the optimal focusing position exists for a standard video module
Position of the maximum to coke number is produced with standard moving step pitch focusing in one fixation test scene
Put；
Give tacit consent to original position according to one and produce a middle door position with the optimal focusing position, its
In to form one first focusing between the acquiescence original position and the middle door position interval, in this
Between that one second focusing is formed between door position and the optimal focusing position is interval；
The image module to be measured is set in one first interval focusing moving step pitch of first focusing,
The image module to be measured is set in one second interval focusing moving step pitch of second focusing, wherein
The first focusing moving step pitch is more than the second focusing moving step pitch and the standard moving step pitch；With
And
The image module to be measured of control in the fixation test scene is moved according to first focusing
Dynamic step pitch carries out focusing test with the second focusing moving step pitch.
12. auto-focusing method of testings as claimed in claim 11, it is characterised in that this takes
Before the step of obtaining an optimal focusing position, also include：Produce according to the depth of field of the standard video module
The raw standard moving step pitch.
13. auto-focusing method of testings as claimed in claim 11, it is characterised in that the control
The image module to be measured of system in the fixation test scene is according to the first focusing moving step pitch
Before the step of carrying out focusing test with the second focusing moving step pitch, also include：Detect that this is to be measured
One initial lens location of image module, when the initial lens location is not in the acquiescence original position
When between the optimal focusing position, it is first by this with an adjustment step pitch to control the image module to be measured
Beginning lens location is moved in the first focusing interval.
14. auto-focusing method of testings as claimed in claim 13, it is characterised in that the tune
Synchronizing to the difference of the middle door position and the acquiescence original position away from being directly proportional.
The 15. auto-focusing method of testings as described in claim 13 or 14, it is characterised in that
Also include：
The adjustment step pitch is calculated with following equation：
S1=(X1+X2)/2；
Wherein, S1 is the adjustment step pitch, and X1 is the optimal focusing position and the acquiescence start bit
The difference put, X2 is the difference of the middle door position and the acquiescence original position.
16. auto-focusing method of testings as claimed in claim 11, it is characterised in that also wrap
Include：
One is produced according to the acquiescence original position and the optimal focusing position set door position, its
In the setting door position be located between the middle door position and the optimal focusing position, make this
One the 3rd focusing is formed between setting door position and the optimal focusing position interval；
The image module to be measured is set in one the 3rd interval focusing moving step pitch of the 3rd focusing,
Wherein the second focusing moving step pitch is more than the 3rd focusing moving step pitch；And
Control the image module to be measured carries out focusing test according to the 3rd focusing moving step pitch.
17. auto-focusing method of testings as claimed in claim 11, it is characterised in that the control
The image module to be measured of system in the fixation test scene is according to the first focusing moving step pitch
After the step of carrying out focusing test with the second focusing moving step pitch, also include：
Export an actual optimal focusing position of the image module to be measured；And
The optimal focusing position of the reality is compared with the optimal focusing position and a test result is exported.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104137087 | 2015-11-10 | ||
| TW104137087A TWI580941B (en) | 2015-11-10 | 2015-11-10 | Auto Focus Test System And Method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106686373A true CN106686373A (en) | 2017-05-17 |
| CN106686373B CN106686373B (en) | 2018-01-30 |
Family
ID=58839222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610283328.8A Expired - Fee Related CN106686373B (en) | 2015-11-10 | 2016-04-29 | Automatic focusing test system and method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106686373B (en) |
| TW (1) | TWI580941B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109788282A (en) * | 2019-03-19 | 2019-05-21 | 深圳市同为数码科技股份有限公司 | Automatic focusing device and its focus adjustment method for camera lens |
| CN110430426A (en) * | 2019-09-06 | 2019-11-08 | 昆山丘钛微电子科技有限公司 | The test method and device of phase-detection auto-focusing performance |
| CN113452991A (en) * | 2021-08-31 | 2021-09-28 | 南昌龙旗信息技术有限公司 | Lens focusing state determining method, device, equipment and storage medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1731267A (en) * | 2004-08-06 | 2006-02-08 | 三星Techwin株式会社 | Automatic focusing method and digital photographing apparatus using the same |
| TW200712594A (en) * | 2005-09-16 | 2007-04-01 | Foxsemicon Integrated Tech Inc | Automatic focusing apparatus and related method |
| JP2007094023A (en) * | 2005-09-29 | 2007-04-12 | Fujifilm Corp | Focus adjustment method of focus lens and imaging apparatus |
| US20080124068A1 (en) * | 2006-05-11 | 2008-05-29 | Samsung Electronics Co.; Ltd | Mobile terminal and auto-focusing method using a lens position error compensation |
| TW201346423A (en) * | 2012-05-14 | 2013-11-16 | Hon Hai Prec Ind Co Ltd | Camera module testing system and method |
| CN103576284A (en) * | 2012-07-26 | 2014-02-12 | 华晶科技股份有限公司 | Automatic focusing method |
| TW201541142A (en) * | 2014-04-24 | 2015-11-01 | Realtek Semiconductor Corp | Passive auto-focus device and method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW486599B (en) * | 2001-10-16 | 2002-05-11 | Kinpo Elect Inc | Automatic focusing method for camera |
| TWI285500B (en) * | 2005-11-11 | 2007-08-11 | Primax Electronics Ltd | Auto focus method for digital camera |
| TWI337498B (en) * | 2008-01-25 | 2011-02-11 | Hon Hai Prec Ind Co Ltd | Image capturing device and auto-focus method |
-
2015
- 2015-11-10 TW TW104137087A patent/TWI580941B/en not_active IP Right Cessation
-
2016
- 2016-04-29 CN CN201610283328.8A patent/CN106686373B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1731267A (en) * | 2004-08-06 | 2006-02-08 | 三星Techwin株式会社 | Automatic focusing method and digital photographing apparatus using the same |
| TW200712594A (en) * | 2005-09-16 | 2007-04-01 | Foxsemicon Integrated Tech Inc | Automatic focusing apparatus and related method |
| JP2007094023A (en) * | 2005-09-29 | 2007-04-12 | Fujifilm Corp | Focus adjustment method of focus lens and imaging apparatus |
| US20080124068A1 (en) * | 2006-05-11 | 2008-05-29 | Samsung Electronics Co.; Ltd | Mobile terminal and auto-focusing method using a lens position error compensation |
| TW201346423A (en) * | 2012-05-14 | 2013-11-16 | Hon Hai Prec Ind Co Ltd | Camera module testing system and method |
| CN103576284A (en) * | 2012-07-26 | 2014-02-12 | 华晶科技股份有限公司 | Automatic focusing method |
| TW201541142A (en) * | 2014-04-24 | 2015-11-01 | Realtek Semiconductor Corp | Passive auto-focus device and method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109788282A (en) * | 2019-03-19 | 2019-05-21 | 深圳市同为数码科技股份有限公司 | Automatic focusing device and its focus adjustment method for camera lens |
| CN110430426A (en) * | 2019-09-06 | 2019-11-08 | 昆山丘钛微电子科技有限公司 | The test method and device of phase-detection auto-focusing performance |
| CN113452991A (en) * | 2021-08-31 | 2021-09-28 | 南昌龙旗信息技术有限公司 | Lens focusing state determining method, device, equipment and storage medium |
| CN113452991B (en) * | 2021-08-31 | 2021-11-23 | 南昌龙旗信息技术有限公司 | Lens focusing state determining method, device, equipment and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI580941B (en) | 2017-05-01 |
| TW201716762A (en) | 2017-05-16 |
| CN106686373B (en) | 2018-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7986875B2 (en) | Sound-based focus system and focus method thereof | |
| US10698308B2 (en) | Ranging method, automatic focusing method and device | |
| CN105022135A (en) | Apparatus for driving voice coil motor actuator | |
| CN106226976A (en) | A kind of dual camera image pickup method, system and terminal | |
| US20090185174A1 (en) | Method for testing a lens and positioning the lens relative to an image sensor | |
| CN108616685B (en) | Focusing method and focusing device | |
| US11022858B2 (en) | Multiple camera apparatus and method for synchronized autofocus | |
| WO2014108976A1 (en) | Object detecting device | |
| CN105100620A (en) | Shooting method and apparatus | |
| CN106686373B (en) | Automatic focusing test system and method | |
| JP6327123B2 (en) | Camera focus adjustment device | |
| WO2019146510A1 (en) | Image processing device | |
| US8817246B2 (en) | Lens test device and method | |
| CN106973199B (en) | Multi-aperture camera system for improving depth accuracy by using focusing distance scanning | |
| CN105827962A (en) | Correction method and device of movement back focal length deviation of camera | |
| CN103176349B (en) | Lens detection device and method | |
| CN110057839A (en) | Focusing control apparatus and method in a kind of Optical silicon wafer detection system | |
| JP4752733B2 (en) | IMAGING DEVICE, IMAGING METHOD, AND IMAGING DEVICE DESIGNING METHOD | |
| CN104038689B (en) | Image processing apparatus and image processing method | |
| CN109981968A (en) | Quick focusing method, device and electronic equipment | |
| TW201404120A (en) | Method and system for testing digital imaging devices | |
| CN104811604B (en) | Image acquiring device and its image deformation bearing calibration | |
| CN105022138B (en) | Use the autofocus system and its method of more camera lenses | |
| CN105704378A (en) | Control method, control device and electronic device | |
| JP2018179584A (en) | Calibration device, calibration method, and calibration program |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180130 Termination date: 20200429 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |