CN105991996B - A kind of camera module detection system and detection method - Google Patents
A kind of camera module detection system and detection method Download PDFInfo
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- CN105991996B CN105991996B CN201510082888.2A CN201510082888A CN105991996B CN 105991996 B CN105991996 B CN 105991996B CN 201510082888 A CN201510082888 A CN 201510082888A CN 105991996 B CN105991996 B CN 105991996B
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Abstract
The present invention provides a kind of camera module detection system, detection method, and provides the method for uniform source of light for camera module.Camera module detection system is suitable for carrying out imaging performance detection to a camera module, detection system includes a light source and an integrating sphere, integrating sphere has a delivery outlet, the light that light source issues is injected in integrating sphere, it is able to obtain uniform light beam in delivery outlet, delivery outlet is suitable for setting camera module, obtains so that light beam enters camera module imaging.
Description
Technical field
The present invention relates to and camera module field more particularly to a kind of camera module detection system and detection method.
Background technique
With advances in technology, the requirement of people is also higher and higher, therefore has more and more fields to need to use wide-angle
Camera module.Wide-angle imaging mould group refers to that field angle is greater than 90 degree of camera module.The size of field angle determines camera module
Field range, field angle is bigger, and the visual field is bigger.Target object beyond field angle will not be received in camera lens.Common
The field angle of camera module is usually at 30 degree or so, it is seen that the field angle of wide-angle imaging mould group is far longer than common camera module.
The method usually detected to the dirty bad point of camera module and brightness uniformity is before camera module
One piece of uniform planar light source is placed by side, and camera module is shot against the planar light source, thus according to acquired image
Detect relevant performance.Since field angle is smaller, the area of planar light source does not need too greatly common camera module, but for
Wide-angle imaging mould group, common planar light source are unable to satisfy big field angle, especially when field angle is greater than 120 degree, need
Light source area it is increasing, the space needed is also increasing, when field angle be more than 180 degree when, just can not with one piece put down
Area source detects the correlated performance of camera module.
Summary of the invention
The main purpose of the present invention is to provide a kind of camera module detection system, which can provide the light of brightness uniformity
Source is used to detect the correlated performance of a camera module, if the dirty bad point detection or brightness uniformity of camera module detect, the system
The light source of brightness uniformity is provided particularly suitable for for wide-angle imaging mould group.
It is another object of the present invention to provide a kind of camera module detection system, which can provide brightness uniformity
Light source more better than planar light source, to can get better one when using the brightness uniformity of the Light source correction camera module
Cause property.
It is another object of the present invention to provide a kind of camera module detection system, which provides a department of computer science
System, can realize the automatic calculating to camera module correlated performance using computer system.
It is another object of the present invention to provide a kind of camera module detection system, which can be used for testing camera shooting mould
The resolving power of group, and compared with traditional detection system, detection system of the invention more saves space.
It is another object of the present invention to provide a kind of camera module detection method, this method can provide for camera module
The light source of brightness uniformity can use the correlated performance of the light source detection wide-angle imaging mould group, as the dirty bad point of camera module is examined
It surveys or brightness uniformity detects.
Another object of the present invention is to provide a kind of camera module detection methods, use this method correction camera module
When brightness uniformity, better consistency when can obtain than using planar light source.
The method of uniform source of light is provided for a camera module the present invention also provides a kind of, the use of this method can be wide-angle imaging
The light source of mould group offer brightness uniformity.
The present invention also provides a kind of methods for detecting camera module resolving power, can be reduced using this method empty needed for test
Between, be conducive to the space utilization rate for improving test site.
To achieve the above objectives, the present invention provides a kind of camera module detection system, be suitable for a camera module into
The detection of row imaging performance, the detection system include a light source and an integrating sphere, and the integrating sphere has a delivery outlet, described
The light that light source issues is injected in the integrating sphere, and to obtain uniform light beam in the delivery outlet, the delivery outlet is suitable for setting
The camera module is set, so that the light beam is imaged into the camera module.
Preferably, the detection system further comprises a computer system, and the computer system is suitable for taking the photograph with described
As mould group data association, to obtain the camera module acquired image, and shows and/or locate using the computer system
Manage described image.
Preferably, the computer system includes image processing software, and described image processing software is for obtaining the figure
As different zones brightness value and/or described image on dim spot, with detect the camera module brightness uniformity and/it is dirty bad
Point.
Preferably, the integrating sphere further has an input port for being formed in the integral global shell, and the light source is set
Outside the integrating sphere, and it is located at the input port, so that the light that the light source issues injects institute by the input port
It states in integrating sphere.The detection system further comprises one blocking screen, and the screen that blocks is set to the input port and the output
Between mouthful, to prevent the light entered from the input port to be directly mapped to the delivery outlet.
Deformable ground, the light source are set in the integrating sphere, so that the light emission that the light source issues enters the integrating sphere
It is interior.The detection system further comprises one blocking screen, and the screen that blocks is set between the light source and the delivery outlet, to prevent
The light that only light source issues directly is mapped to the delivery outlet.
The method of uniform source of light is provided the present invention also provides a kind of for camera module, comprising the following steps:
A) light that a light source issues injects an integrating sphere, forms uniform light intensity point in each point of the integrating sphere inner wall
Cloth；
B) the uniform light beam of the integrating sphere inner wall is injected by the delivery outlet on the integrating sphere positioned at described defeated
In one camera module in exit.
Preferably, further include a step c) before step b): setting one blocks screen in the light source and the delivery outlet
Between, the light issued to avoid the light source is directly incident upon the delivery outlet.
The present invention also provides a kind of detection methods of camera module, comprising the following steps:
(A) light that a light source issues injects an integrating sphere, forms uniform light intensity in each point of the integrating sphere inner wall
Distribution；
(B) the uniform light beam of the integrating sphere inner wall is injected by the delivery outlet on the integrating sphere positioned at described defeated
In one camera module in exit, the camera module collects image I；
(C) the collected described image I of camera module is obtained by a computer system, and shows and/or handles
Described image I.
Preferably, in step C), described image I is handled by image processing software, obtains described image I different zones
Brightness value and/or described image I on dim spot, to carry out brightness uniformity and/or dirty bad point detection to the camera module.
Preferably, further include a step D before step C)): setting one blocks screen in the light source and the delivery outlet
Between, the light issued to avoid the light source is directly incident upon the delivery outlet.
The present invention also provides a kind of detection methods of camera module, comprising the following steps:
I) one camera module of data association and a computer system, so that the computer system can get the camera shooting mould
The image of group acquisition；
Ii light) is made to inject the camera module from the delivery outlet of an integrating sphere, so that the camera module collects figure
As I, the computer system obtains described image I；
Iii the described image I that the computer system obtains) is shown and/or handled using the computer system.
Preferably, wherein step II) before further comprise the steps of: IV) light that issues a light source enters the integrating sphere,
Uniform light distribution is formed with each point in the integrating sphere inner wall.
Preferably, wherein in step II) and IV) between further include a step: V) setting one block screen in the light source with
Between the delivery outlet, the light issued to avoid the light source is directly incident upon the delivery outlet.
Preferably, in step III) in, described image I is handled by image processing software, obtains the not same district described image I
The brightness value and/or the dim spot on described image I in domain, to carry out brightness uniformity and/or dirty bad point inspection to the camera module
It surveys.
The present invention also provides a kind of detection methods of camera module, comprising the following steps:
I light) is made to inject a camera module from the delivery outlet of an integrating sphere, so that the camera module collects image I；
II the image I of the camera module acquisition) is obtained using computer system；
III) described image I is shown and/or handled using the computer system.
Preferably, step I) further comprising the steps of before: V) light for projecting a light source enters the integrating sphere,
Uniform light distribution is formed with each point in the integrating sphere inner wall.
Preferably, step I) and step V) between it is further comprising the steps of: VI) be arranged one block screen in the light source with
Between the delivery outlet, the light issued to avoid the light source is directly incident upon the delivery outlet.
Preferably, in step III), described image I is handled by image processing software, obtains the not same district described image I
The brightness value and/or the dim spot on described image I in domain, to carry out brightness uniformity and/or dirty bad point inspection to the camera module
It surveys.
The present invention also provides a kind of detection system of camera module, the detection system is suitable for testing the solution of a camera module
Image force, which is characterized in that the detection system includes including a light source, an integrating sphere and a test mark version, the test mark
Version is set to the integrating sphere inner wall, and the light that the light source issues is injected in the integrating sphere, obtains so that test mark version obtains
Uniform illumination, the camera module are suitable for opposite with test mark version, be able to obtain the image that version is marked in the test.
Preferably, the detection system further comprises a computer system, and the computer system is suitable for taking the photograph with described
As mould group data association, be able to obtain the camera module acquired image, and shown using the computer system and/or
Handle described image.
Preferably, the detection system further comprises one blocking screen, and the screen that blocks is set to the light source and the survey
Between test-object version, it is avoided the light that the light source issues and is emitted directly toward the test mark version.
The present invention also provides a kind of methods for testing camera module resolving power, which comprises the following steps:
I. one test mark version of setting is in an integrating sphere inner wall；
J. the light that a light source issues is injected in the integrating sphere, is obtained so that version with obtaining brightness uniformity light is marked in the test
According to；
K. a camera module is directed at the test and marks version, obtains the image of the test mark version；
L. the resolving power of the camera module is calculated using described image.
Preferably, further include a step before step j: m. setting one block screen in the light source and the test mark version it
Between, it is avoided the light that the light source issues and is directly incident upon the test mark version.
Detailed description of the invention
Fig. 1 is the schematic diagram of a preferred embodiment of camera module detection system according to the present invention.
Fig. 2 is the schematic diagram of a deformation of the above preferred embodiment of camera module detection system according to the present invention.
Fig. 3 is the schematic diagram of another preferred embodiment of camera module detection system according to the present invention.
Fig. 4 is camera module detection system of the invention for testing the schematic diagram when resolving power of camera module.
Specific embodiment
It is described below for disclosing the present invention so that those skilled in the art can be realized the present invention.It is excellent in being described below
Embodiment is selected to be only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.It defines in the following description
Basic principle of the invention can be applied to other embodiments, deformation scheme, improvement project, equivalent program and do not carry on the back
Other technologies scheme from the spirit and scope of the present invention.
Camera module test macro 1 of the invention can provide brightness when carrying out imaging performance detection to a camera module 2
Uniform light source, the imaging performance detection include dirty bad point detection, brightness uniformity detection etc..The test macro 1 includes
One light source 11 and an integrating sphere 12.
The integrating sphere 12 is used to the light that the light source 11 issues carrying out light, the light into the integrating sphere 12 to exist
It is equably reflected and is diffused inside the integrating sphere 12, to form uniform light distribution in ball inner wall each point.Described
A window is opened on any position of integrating sphere 12, can obtain uniformly diffusing light beam from the window.By the camera shooting mould
Group 2 is set at the window of the integrating sphere 12, so that the diffusion light beam enters the camera module 2, in the camera shooting
It is imaged on one sensitive chip 23 of mould group 2, so that the camera module 2 collects image.The quality of described image and the product
The imaging performance for the diffusion light beam and the camera module 2 itself that bulb separation 12 provides is related, but due to the integrating sphere
The uniformity of the 12 diffusion light beams provided is fine, thus the quality of described image just mainly by the camera module 2 at
As performance determines.For example, there are when dim spot when the center of described image is inconsistent with the brightness of surrounding or in described image,
Main cause should be attributed to the problem of dependency structure of the camera module 2.
The test macro 1 further includes a computer system 13, and the computer system 13 is suitable for and the camera module 2
Data connection, so as to obtain 2 acquired image of camera module, the computer system 13 can show the figure
Picture obtains the imaging performance of the camera module 2 so as to analyze described image.By increasing the department of computer science
System 13, so that the test macro 1 other than it can provide the light source of brightness uniformity, can also directly utilize the camera module
The detection of 2 acquired images progress dependent imaging performance.
The computer system 13 can be only used for obtaining the described image that the camera module 2 acquires, by described image
Export, by other path analysis described images, to obtain the dependent imaging performance of the camera module.The department of computer science
System 13 can also include corresponding software for calculation, automatic to described image using corresponding software after obtaining described image
It is analyzed and is calculated, to the dependent imaging performance of the camera module, so that the test macro 1 may be implemented automatically
Calculate the purpose of the dependent imaging performance of the camera module 2.
Shown in FIG. 1 is a preferred embodiment of the test macro 1 of the invention.The test macro 1 includes one
Light source 11, an integrating sphere 12 and a computer system 13.The integrating sphere 12 be a hollow sphere, the integrating sphere 12 it is interior
Wall is coated with diffusive white reflective material.The integrating sphere 12 has a delivery outlet 121 and an input port 122, the delivery outlet 121
The shell of the integrating sphere 12 is formed in the input port 122.
The light source 11 is set to the outside of the integrating sphere 12, and is set at the input port 122 of the integrating sphere 12,
So that the light that the light source 11 issues can be injected into the integrating sphere 12 by the input port 122, into the integral
The light of ball 12 is equably reflected and is diffused inside the integrating sphere 12, to form uniform light intensity in ball inner wall each point
Distribution, to obtain uniformly diffusing light beam at the delivery outlet 121.The camera module 2 is set to the delivery outlet 121,
So that the light beam that the delivery outlet 121 projects enters the camera module 2.The camera module 2 and the department of computer science
It unites 13 data connections, sends 2 acquired image of camera module to the computer system 13, and pass through the meter
Calculation machine system 13 shows and performs corresponding processing.
The test macro 1 further includes one blocking screen 14, and the screen 14 that blocks is set in the integrating sphere 12, and is located at institute
It states between delivery outlet 121 and the input port 122, namely between the light source 11 and the delivery outlet 121.It is described to block
The effect of screen 14 is to prevent the light for entering the integrating sphere 12 from the input port 122 not reflected directly from the delivery outlet
121 project, to influence the uniformity that the delivery outlet 121 projects light.The length and width for blocking screen 14 should be according to the output
The size of mouth 121 and the input port 122 is selected, described defeated would be possible to directly be incident to from the input port 122
The light barrier of outlet 121.
Since the 12 inner wall each point of integrating sphere can all form uniform light intensity, the position of the delivery outlet 121 can
Arbitrarily to select.As shown in Figure 1, the delivery outlet 121 is located at the two of 12 1 diameters of integrating sphere with the input port 122
End.As shown in Fig. 2, the delivery outlet 121 and the delivery outlet not the same of the integrating sphere 12 diametrically.
It is illustrated in figure 2 above preferred embodiment one deformation, when the light source 11 is in the outer of the integrating sphere 12
It is described to block screen 14 ' also and may be at the outside of the integrating sphere 12 when portion, namely it is set to the light source 11 and the input port
Between 122, the screen 14 ' that blocks can would be possible to the light barrier that the delivery outlet 121 is directly mapped to from the light source 11
, while the screen 14 ' that blocks not fully blocks the light source 11 and the input port 122, so that the light source 11
Some light can by the input port 122 enter the integrating sphere 12 in.
Fig. 3 is another preferred embodiment of the test macro 1 of the invention.The integrating sphere 12A is a hollow ball
The inner wall of body, the integrating sphere 12A is coated with diffusive white reflective material.The integrating sphere 12A has a delivery outlet 121A, described defeated
Outlet 121A is formed in the shell of the integrating sphere 12A, so that connection inside and outside the integrating sphere 12A.
The light source 11 is set in the integrating sphere 12A, and the light that the light source 11 issues is inside the integrating sphere 12A
It is equably reflected and is diffused, uniform light distribution is formed in ball inner wall each point, to obtain at the delivery outlet 121A
Uniform diffusion light beam.The camera module 2 is set to the delivery outlet 121A, so that delivery outlet 121A injection is described unrestrained
Irradiating light beam enters the camera module 2.The camera module 2 and 13 data connection of computer system, by the camera shooting
2 acquired image of mould group sends the computer system 13 to, and is performed corresponding processing by the computer system 13.
The test macro 1 further comprise one block screen 14A, it is described block screen 14A be set to the integrating sphere 12A in,
And between the light source 11 and the delivery outlet 121A, the effect for blocking screen 14A is to prevent from sending out from the light source 11
Light out is directly projected from the delivery outlet 121A without the inner wall reflection of the integrating sphere 12A, to influence the output
Mouth 121A projects the uniformity of light.The length and width for blocking screen 14A should be according to the ruler of the delivery outlet 121A and the light source 11
The selection of little progress row, the light barrier that can be directly projected from the delivery outlet 121A that the light source 11 is issued.
In above several embodiments, uniform diffused ray all can be obtained at the delivery outlet 121, all can be described
Camera module 2 provides uniform light source, for carrying out the detection of dependent imaging performance to the camera module 2.It mentions in the background
It has arrived at present when carrying out imaging performance detection to camera module, what is used is all planar light source, and planar light source can not be wide
Angle camera module provides uniform illumination, and detection system provided by the invention 1 is to provide integral by the integrating sphere 12
Ball light source can provide uniform illumination for wide-angle imaging mould group, solve the problems, such as current.
In addition, due to the particularity of integrating sphere, so that the brightness uniformity ratio of the light source obtained by the integrating sphere 12
The brightness uniformity of planar light source is more preferable, therefore when detecting the brightness uniformity of the camera module 2, uses institute of the invention
Detection system 1 is stated than using traditional planar light source that can obtain better consistency.
The camera module 2 includes a camera lens 21, an optical filter 22 and a sensitive chip 23.Utilizing institute of the invention
When stating detection system 1 and detecting to the camera module 2, the camera lens 21 of the camera module 2 is directed at the delivery outlet 121,
So that the uniform diffusion light beam projected from the delivery outlet 121 enters the camera lens 21, and pass through 21 He of camera lens
The optical filter 22 is incident to the sensitive chip 23, so that the sensitive chip 23 collects an image I.The sensitive chip
23 with 13 data connection of computer system, thus the computer system 13 obtain described image I, the computer system
13 are displayed for described image I, described image I can also be handled and be analyzed automatically according to corresponding software.By
It is related in the quality and the camera module 2 of described image I, therefore described image I can be handled by analysis, described take the photograph can be obtained
As the dependent imaging performance of mould group 2, consequently facilitating further being adjusted to the camera module 2.It is illustrated below such as
What carries out dirty bad point detection to the camera module 2 using the detection system 1 of the invention and brightness uniformity detects.
When carrying out dirty bad point detection to the camera module 2, the shooting of complete white photo is carried out, also i.e. by the camera shooting mould
Group 2 is set at the delivery outlet 121 of the integrating sphere 12, so that uniform light enters the camera module 2, in turn
It is imaged on the sensitive chip 23, to collect image I1.The sensitive chip 23 passes collected described image I1
The computer system 13 is given, to show described image I1 in the computer system 13.If the photosensitive core
There is no bad point on piece 23, then described image I1 should be complete continuous, and each pixel in described image is bright spot.Such as
There is bad point on sensitive chip 23 described in fruit, or have a stain in the camera module 2, then in the corresponding position meeting of described image I1
There is dim spot.Due to during atual detection, a pixel be it is very small, human eye is hardly visible, it is therefore desirable to by
The help of image processing software can automatically analyze out which position in described image I1 exists secretly using image processing software
Point.When being analyzed using image processing software, the brightness uniformity of described image is better, and the result of acquisition is also got over accordingly
Accurately.
When carrying out brightness uniformity detection to the camera module 2, and carry out the shooting of complete white photo.It is taken the photograph described
It is set to as mould group 2 at the delivery outlet 121 of the integrating sphere 12, so that uniform light enters the camera module 2,
And then be imaged on the sensitive chip 23, to collect image I2.The sensitive chip 23 is by collected described image
I2 sends the computer system 13 to, to show described image I2 in the computer system 13.Obtain the figure
As I2 is in the brightness value of middle section and four angular zones, and the ratio of middle section Yu quadrangle regional luminance is calculated, when ratio exists
Within one critical field, then it is assumed that the camera module has preferable brightness uniformity.It can be by image processing software certainly
The dynamic described image I2 that obtains also can use corresponding software and calculate middle section and four angular regions in the brightness value of corresponding region
The ratio of domain brightness, so as to realize the dependent imaging for testing the camera module 2 automatically by the computer system 13
Performance.
The method of uniform source of light is provided the present invention also provides a kind of for wide-angle imaging mould group, comprising the following steps:
A) light that a light source 11 issues injects an integrating sphere 12, is formed uniformly in each point of 12 inner wall of integrating sphere
Light distribution；
B) the uniform light beam of 12 inner wall of integrating sphere is located at by a delivery outlet 121 injection on the integrating sphere 12
In a camera module 2 at the delivery outlet 121.
Further include a step c) before step b): setting one blocks screen 14 in the light source 11 and the delivery outlet 121
Between, the light issued to avoid the light source 11 is directly incident upon the delivery outlet without the inner wall diffusing reflection of the integrating sphere 12
121。
The present invention also provides a kind of detection methods of camera module, comprising the following steps:
(A) light that a light source 11 issues injects an integrating sphere 12, is formed uniformly in each point of 12 inner wall of integrating sphere
Light distribution；
(B) the uniform light beam of 12 inner wall of integrating sphere passes through 121 entry position of a delivery outlet on the integrating sphere 12
In a camera module 2 at the delivery outlet 121, so that the camera module 2 collects image I；
(C) the 2 acquired image I of camera module is obtained by a computer system, and described in display and/or processing
Image I.
Preferably, in step C), described image I is handled by image processing software, obtains described image I different zones
Brightness value and/or described image I on dim spot, to carry out brightness uniformity and/or dirty bad point detection to the camera module.
The present invention also provides a kind of detection methods of camera module, comprising the following steps:
I) one camera module 2 of data association and a computer system 13, so that the computer system 13 is available described
The image that camera module 2 acquires；
Ii light) is made to inject the camera module 2 from the delivery outlet 121 of an integrating sphere 12, so that the camera module 2 is adopted
Collect image I, the computer system 13 obtains described image I；
Iii described image I) is shown and/or handled using the computer system 13.
In step II) in, the light for projecting the delivery outlet 121 of the integrating sphere 12 injects the camera module 2,
Also the camera module 2 is set at the delivery outlet 1221.
Step II) it further includes steps of before
IV) so that the light of a light source 11 sending is entered the integrating sphere 12, in each dot of 12 inner wall of integrating sphere
At uniform light distribution；
V) setting one blocks screen 14 between the light source 11 and the delivery outlet 121, to avoid the light source 11 sending
Light be directly incident upon the delivery outlet 121 without the inner wall diffusing reflection of the integrating sphere 12.
It is noted that step I in the above method) and step II) not no sequencing limitation, by its sequencing
Change the implementation for not influencing the method.The camera module 2 also can be first set to the output of the integrating sphere 12
At mouthfuls 121, so that the light that the delivery outlet 121 of the integrating sphere 12 projects is into the camera module 2, then data association again
The camera module 2 and the computer system 13, make the computer system 13 obtain the described photosensitive of the camera module 2
23 acquired image I of chip.
In step III) in, described image I is handled by image processing software, obtains the brightness of described image I different zones
Dim spot on value and/or described image I, to carry out brightness uniformity and/or dirty bad point detection to the camera module.
The camera module 2 in aforementioned several method can be wide-angle imaging mould group or common camera module.
In addition, the camera module detection system of the invention can be also used for testing the camera shooting using above-mentioned principle
The resolving power of mould group 2.Resolving power test is exactly to detect which type of resolution ratio the camera module 2 can reach when shooting.It is logical
Often shooting distance when test will be equal to the focal distance of the camera module 2, namely when carrying out resolving power test, described to take the photograph
As the focal distance that the distance between mould group 2 and a test mark version 4 are the camera module 2.Then by described in standard
Test mark version 4 is shot to calculate the resolving power of the camera module 2.
When carrying out resolving power test, the brightness uniformity of the test mark version 4 when in order to guarantee shooting, it is desirable to provide uniformly
Ground light source illuminates the test and marks version 4.When the camera module 2 be wide-angle imaging mould group when, if use planar light source as
Illumination, then need biggish planar light source.
For example, when the field angle of the camera module 2 is 170 degree, when focal distance is 35cm, if using planar light
When source is tested, then the space needed is about 1.5m × 1m × 1m.
If providing light, Ke Yi great by the integrating sphere 12 using the camera module detection system of the invention
It is big to reduce required space.When the field angle of the camera module 2 is 170 degree, and focal distance is 35cm, if described in utilizing
Integrating sphere provides ball light source, then the space can reduce be the sphere that radius is 35cm space.
In embodiment as shown in Figure 4, the test mark version 4 is set to the inner wall of the integrating sphere 12, the camera shooting mould
2 alignment of the group test mark version is set to the predetermined position in the integrating sphere 12.Since test mark version 4 is set to the product
The inner wall of bulb separation 12, therefore the light for being incident on the test mark version 4 is the light of brightness uniformity, the camera module 2 can be clapped
Version 4 is marked in the test with taking the photograph uniform illumination.
It is noted that test mark version 4 be it is transparent, marked in version 4 in the test and do not have figuratum position, light
Line can pass through the test mark version 4.
It should be understood by those skilled in the art that foregoing description and the embodiment of the present invention shown in the drawings are only used as illustrating
And it is not intended to limit the present invention.The purpose of the present invention has been fully and effectively achieved.Function and structural principle of the invention exists
It shows and illustrates in embodiment, under without departing from the principle, embodiments of the present invention can have any deformation or modification.
Claims (12)
1. a kind of camera module detection system is suitable for carrying out imaging performance detection to a camera module, which is characterized in that the inspection
Examining system includes a light source and an integrating sphere, and the integrating sphere has a delivery outlet and an input port, and the light source is set to institute
The outside of integrating sphere is stated, and is set to the input port of the integrating sphere, the light that the light source issues passes through the input port
It injects in the integrating sphere, to obtain uniform light beam in the delivery outlet, the delivery outlet is suitable for that the camera module is arranged,
So that the light beam is imaged into the camera module, the detection system further comprises one blocking screen, described to block at screen
In the outside of the integrating sphere, it is set between the light source and the input port.
2. detection system as described in claim 1, wherein the detection system further comprises a computer system, the meter
Calculation machine system be suitable for the camera module data association, to obtain the camera module acquired image, and described in utilizing
Computer system shows and/or handles described image.
3. detection system as claimed in claim 2, wherein the computer system includes image processing software, at described image
The brightness value and/or the dim spot in described image that reason software is used to obtain described image different zones, to detect the camera shooting mould
The brightness uniformity of group and/or dirty bad point.
4. a kind of provide the method for uniform source of light for camera module, which comprises the following steps:
A) light that a light source issues injects an integrating sphere, forms uniform light distribution in each point of the integrating sphere inner wall；
B) the uniform light beam of the integrating sphere inner wall is injected by the delivery outlet on the integrating sphere is located at the delivery outlet
In one camera module at place, wherein the integrating sphere has an input port, the light source is arranged at the input port, wherein
Further include a step c) before step b): setting one blocks screen between the input port and the delivery outlet.
5. a kind of detection method of camera module, which comprises the following steps:
(A) light that a light source issues injects an integrating sphere, forms uniform light distribution in each point of the integrating sphere inner wall；
(B) the uniform light beam of the integrating sphere inner wall is injected by the delivery outlet on the integrating sphere is located at the delivery outlet
In one camera module at place, the camera module collects image I；
(C) the collected described image I of camera module is obtained by a computer system, and described in display and/or processing
Image I；Wherein the integrating sphere has an input port, wherein further including a step D before step C)): screen is blocked in setting one
Between the light source and the input port.
6. method as claimed in claim 5, wherein handling described image I in step C) by image processing software, obtaining
The brightness value and/or the dim spot on described image I of described image I different zones, to carry out brightness uniformity to the camera module
Property and/or dirty bad point detection.
7. a kind of detection method of camera module, which comprises the following steps:
I) one camera module of data association and a computer system, so that the computer system can get the camera module and adopt
The image of collection；
Ii light) is made to inject the camera module from the delivery outlet of an integrating sphere, so that the camera module collects image I,
The computer system obtains described image I；
Iii the described image I that the computer system obtains) is shown and/or handled using the computer system, wherein described
Integrating sphere have an input port, wherein in step II) before further include V) setting one block screen in the input port with it is described defeated
Between outlet.
8. the method for claim 7, wherein step II) before further comprise the steps of:
IV) so that the light of light source sending is entered the integrating sphere, uniform light is formed with each point in the integrating sphere inner wall
Strong distribution.
9. the method as described in claim 7-8 is any, wherein in step III) in, the figure is handled by image processing software
As I, the brightness value and/or the dim spot on described image I for obtaining described image I different zones, to be carried out to the camera module
Brightness uniformity and/or dirty bad point detection.
10. a kind of detection method of camera module, which comprises the following steps:
I light) is made to inject a camera module from the delivery outlet of an integrating sphere, so that the camera module collects image I；
II the image I of the camera module acquisition) is obtained using computer system；
III described image I) is shown and/or handles using the computer system, wherein the integrating sphere has an input port,
Wherein in the step I) it before further include that VI) setting one blocks screen between light source and the input port.
11. method as claimed in claim 10, wherein step I) before the following steps are included:
V) light for projecting a light source enters the integrating sphere, forms uniform light with each point in the integrating sphere inner wall
Strong distribution.
12. the method as described in claim 10-11 is any, wherein in step III), handled by image processing software described in
Image I, obtain described image I different zones brightness value and/or the dim spot on described image I, with to the camera module into
Row brightness uniformity and/or dirty bad point detection.
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| CN106768869A (en) * | 2016-10-31 | 2017-05-31 | 芜湖赋兴光电有限公司 | A kind of mobile phone camera module brightness uniformity method of testing |
| CN106791818B (en) * | 2016-12-27 | 2019-04-12 | 歌尔股份有限公司 | Test the method for camera resolving power and the equipment for the test of camera resolving power |
| CN106949410A (en) * | 2017-05-18 | 2017-07-14 | 信利光电股份有限公司 | A kind of light supply apparatus |
| CN107543040B (en) * | 2017-07-25 | 2019-07-02 | 歌尔股份有限公司 | Testing light source and test device for wide-angle lens |
| CN107818558B (en) * | 2017-09-19 | 2020-05-29 | 歌尔科技有限公司 | Method and device for detecting defects of lens |
| CN107680482B (en) * | 2017-09-29 | 2021-04-06 | 北京小米移动软件有限公司 | Display module and electronic device |
| CN108761860B (en) * | 2018-05-23 | 2024-01-23 | 昆山龙雨智能科技有限公司 | Display screen detection device |
| WO2020019352A1 (en) * | 2018-07-27 | 2020-01-30 | 深圳市大疆创新科技有限公司 | Method, device and system for inspecting camera module, and machine readable storage medium |
| CN109858423B (en) * | 2019-01-25 | 2021-08-06 | 上海思立微电子科技有限公司 | Fingerprint image acquisition method and equipment |
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| CN105991996A (en) | 2016-10-05 |
| CN110324611A (en) | 2019-10-11 |
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