CN107063640B - A kind of backrest-type twin-lens light axis consistency test fixture and its test method - Google Patents
A kind of backrest-type twin-lens light axis consistency test fixture and its test method Download PDFInfo
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- CN107063640B CN107063640B CN201611207857.6A CN201611207857A CN107063640B CN 107063640 B CN107063640 B CN 107063640B CN 201611207857 A CN201611207857 A CN 201611207857A CN 107063640 B CN107063640 B CN 107063640B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
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Abstract
The present invention discloses a kind of backrest-type twin-lens light axis consistency test fixture and its test method, and smelting tool includes jig platform and graph card, and graph card and twin-lens are separately positioned on smelting tool platform, and graph card is located at the object space of twin-lens；Setting has the marker graphic of rotational variability on graph card, and marker graphic includes a central point label and four endpoint labels；Line between non-conterminous two endpoints label is mutually perpendicular to equal part, and central point label coincides with perpendicular bisected point；The camera lens face of twin-lens is parallel with the graph card face of corresponding graph card respectively, and the line between the central point label of graph card and the center of twin-lens is vertical with the camera lens face of twin-lens；Tested twin-lens includes the first camera lens and the second camera lens being arranged with back to back structure；First camera lens and the second camera lens are separately positioned in camera, and camera is equipped with the USB interface being communicatively coupled with PC machine.Technical solution of the present invention can solve the problem of judging light axis consistency, and test result accuracy is high.
Description
Technical field
The present invention relates to optical lens the field of test technology, and in particular to a kind of backrest-type twin-lens light axis consistency test
Jig and its test method.
Background technique
With the enhancing of computer process ability, more and more technologies handle to realize based on image, such as machine
Vision is used for robot technology, and machine vision is for industrial automation production, 3D printing, 3 d reconstruction technology etc., in order to obtain essence
True image information then needs camera lens to have relatively high precision, and the tilt angle of camera lens optical axis, offset deviation and rotation miss
Difference is exactly very important parameter.
In existing optical lens test process, need using different testing tools and means of testing difference test mirrors more
The above-mentioned different parameters of head, lead to that structure is complicated, the degree of automation is low, test process is cumbersome, test period there are testing tool
Long, the problems such as test result error is larger.
Summary of the invention
It is existing to solve the present invention provides a kind of backrest-type twin-lens light axis consistency test fixture and its test method
Testing tool structure is complicated, the degree of automation is low, test process is cumbersome, test period is long, test result error is larger etc. asks
Topic.
According to an aspect of the invention, there is provided a kind of backrest-type twin-lens light axis consistency test fixture, is tested
Twin-lens include with back to back structure be arranged the first camera lens and the second camera lens；First camera lens and the second camera lens are separately positioned on
In camera, camera is equipped with the USB interface being communicatively coupled with PC machine；
Smelting tool includes jig platform and graph card, and graph card and twin-lens are separately positioned on smelting tool platform, and graph card is located at twin-lens
Object space；
Setting has the marker graphic of rotational variability on graph card, and marker graphic includes a central point label and four ends
Point label；Line between non-conterminous two endpoints label is mutually perpendicular to equal part, and central point label and perpendicular bisected point phase
It is overlapped；
The camera lens face of twin-lens is parallel with the graph card face of corresponding graph card respectively, the central point label and twin-lens of graph card
Center between line it is vertical with the camera lens face of twin-lens；
The first optical receiver of square is separately installed with behind first camera lens, the second camera lens, the second optics receives
Device, the line between the central point of the first optical receiver and the central point of the first camera lens is vertical with the camera lens face of the first camera lens,
Line between the central point of second optical receiver and the central point of the second camera lens is vertical with the camera lens face of the second camera lens.
According to another aspect of the present invention, a kind of backrest-type twin-lens light axis consistency test method is provided, is tested
The twin-lens of examination includes the first camera lens and the second camera lens being arranged with back to back structure；Using the back of such as one aspect of the present invention
Reclining twin-lens light axis consistency test fixture, comprising the following steps:
Graph card and twin-lens are placed on jig platform, and graph card is made to be located at the object space of twin-lens, and the camera lens face of twin-lens is divided
Line and twin-lens not parallel with the graph card face of corresponding graph card, between the central point label of graph card and the center of twin-lens
Camera lens face it is vertical；
The optical receiver of square, the center of optical receiver are installed respectively behind the first camera lens, the second camera lens
Point, the central point of optical receiver and second vertical with the camera lens face of the first camera lens with the line between the central point of the first camera lens
Line between the central point of camera lens is vertical with the camera lens face of the second camera lens；
Camera is subjected to data communication connection by USB interface and PC machine, software is installed in advance in PC machine, passes through software
The camera of control the first camera lens of control and the second camera lens is taken pictures, and the first figure of the corresponding graph card of the first camera lens shooting is obtained
Second image of picture and the corresponding graph card of the second camera lens shooting；
According to the first image and the second image of acquisition, the primary optic axis of the first camera lens and the second light of the second camera lens are detected
Tilt angle between axis；
If the tilt angle between the primary optic axis of the first camera lens and the second optical axis of the second camera lens meets setting detection mark
It is quasi-, it is concluded that tested twin-lens qualification test result, otherwise obtain the underproof test result of tested twin-lens, and tie
Beam test.
The beneficial effects of the present invention are: this backrest-type twin-lens light axis consistency test of one aspect of the present invention is controlled
Tool, firstly, the test fixture carries out the principle of capture comparison, a set of smelting by using camera to tested screen test imaging
Tool can realize the parameter testing of the tilt angle to camera lens optical axis, offset deviation and rotation error, without being respectively adopted
Different testing tools and means of testing carry out respectively, to solve testing tool, structure is complicated, test process is cumbersome, test is all
The problems such as phase is long, in this way, its testing tool is ingenious rationally, test method science quickly, reduces testing cost, improves test effect
Fruit.
Secondly, this test smelting of the invention has, be arranged on graph card it is with rotational variability, with central point mark
The marker graphic of note and endpoint label, while central point label, the first optical receiver of the central point of tested screen test, graph card
The test specimens such as central point, the second optical receiver central point and testing tool element central point on same straight line,
And the straight line and the camera lens face of tested screen test, the graph card face of graph card, the receiving plane of the first optical receiver, the second optics receive
The working face of the test specimens such as the receiving plane of device and testing tool element is perpendicular, and such structure makes test smelting of the invention
Have the parameter testing for carrying out camera lens optical axis in 0 ° of visual field, to reduce the requirement to graph card, reduces testing cost, improve test
The accuracy of precision and test result.
In addition, this test smelting of the invention has, camera is connect with PC machine by USB interface, PC machine passes through installation
Software controls camera, so that camera is taken pictures, obtains camera lens to the image of graph card imaging, and camera shooting is obtained
Image carries out processing analysis, will analyze the examination criteria set in result and software and compares, automatically derived test result, and
Without manual control testing procedure, without manual analysis contrast images and obtain test result, thus solve the degree of automation it is low,
The larger problem of test result error improves the automation of test in this way, significantly reducing the disturbing factor artificially participated in
Degree greatly reduces test result error.
This backrest-type twin-lens light axis consistency test method of another aspect of the present invention, firstly, it is by adopting
With the backrest-type twin-lens light axis consistency test fixture of one aspect of the present invention, it is able to solve existing testing tool structure
Complicated, the problems such as the degree of automation is low, test process is cumbersome, test period is long, test result error is larger, reduce artificial participate in
Disturbing factor, improve the degree of automation of test, reduce test result error, improve measuring accuracy and efficiency；Secondly, this
This backrest-type twin-lens light axis consistency test method of invention, by utilizing the figure with rotational variability marker graphic
Card imaging, and by designing reasonable testing procedure, and combination software automatically controls and analysis processing, can more effectively mention
High measuring accuracy and test result reliability reduce test period, are conducive to the yield rate for improving product, guarantee the matter of product
Amount.
Detailed description of the invention
Fig. 1 is the camera and PC machine of a kind of backrest-type twin-lens light axis consistency test fixture of one embodiment of the invention
Between hardware connection signal block diagram；
Fig. 2 is the signal of the central point label and four endpoints label of marker graphic on the graph card of one embodiment of the invention
Figure；
Fig. 3 is the structural schematic diagram of a kind of camera lens and optical receiver of one embodiment of the invention；
Fig. 4 be the twin-lens of one embodiment of the invention be fixed on can 180 ° rotation lens mounts on structural schematic diagram；
Fig. 5 is a kind of main view of backrest-type twin-lens light axis consistency test fixture of one embodiment of the invention；
Fig. 6 is a kind of top view of backrest-type twin-lens light axis consistency test fixture of one embodiment of the invention；
Fig. 7 is the schematic diagram of marker graphic on the graph card of one embodiment of the invention；
Fig. 8 is the schematic diagram of marker graphic on the graph card of another embodiment of the present invention；
Fig. 9 is the schematic diagram of the tilt angle test of the camera lens optical axis of one embodiment of the invention；
Figure 10 is that the tested screen test and optics in the tilt angle test of the camera lens optical axis of one embodiment of the invention connect
Receive the schematic diagram of device part；
Figure 11 is the schematic diagram of the rotation error test of the camera lens optical axis of one embodiment of the invention；
Figure 12 is a kind of result schematic diagram of the offset deviation test of the camera lens optical axis of one embodiment of the invention；
Figure 13 is another result schematic diagram of the offset deviation test of the camera lens optical axis of one embodiment of the invention；
Figure 14 is another result schematic diagram of the offset deviation test of the camera lens optical axis of one embodiment of the invention；
Figure 15 is another result schematic diagram of the offset deviation test of the camera lens optical axis of one embodiment of the invention；
Figure 16 is a kind of result schematic diagram of the rotation error test of the camera lens optical axis of one embodiment of the invention.
Specific embodiment
A kind of prior art for testing the parameters such as tilt angle, offset deviation and the rotation error of optics camera lens optical axis is:
Using the above-mentioned different parameters of different testing tools and means of testing difference testing lens, lead to that there are testing tool structures
Complicated, the problems such as the degree of automation is low, test process is cumbersome, test period is long, test result error is larger.
Design concept of the invention is: for survey present in existing camera lens optical axis parameter testing tool and means of testing
The problems such as trial work lamps structure is complicated, the degree of automation is low, test process is cumbersome, test period is long, test result error is larger, this
Invention directly can complete the test of above-mentioned camera lens optical axis parameter using a set of test smelting tool, to simplify test process, improve
Testing efficiency reduces testing cost.In addition, camera is connect by technical solution of the present invention by USB interface with PC machine, PC machine is logical
The software for crossing installation controls camera, so that camera is taken pictures, obtains camera lens to the image of graph card imaging, without artificial
Control testing procedure, while the software by installing in PC machine carry out processing analysis to the image that camera shooting obtains, and will divide
The examination criteria set in analysis result and software compares, automatically derived test result, without manual analysis contrast images
And obtain test result, to solve the problems, such as that the degree of automation is low, test result error is larger, to significantly reduce people
For the disturbing factor of participation, improve the degree of automation of test, substantially reduce test result error, improve testing efficiency and
Test result accuracy, and because being the detection of zero visual angle, the requirement to graph card can be not bery stringent, while also can guarantee survey
It is as small as possible to measure error, reduces testing cost, improves detection reliability and accuracy.
Embodiment one
Fig. 1 is the camera and PC machine of a kind of backrest-type twin-lens light axis consistency test fixture of one embodiment of the invention
Between hardware connection signal block diagram；Fig. 2 is the central point label and four of marker graphic on the graph card of one embodiment of the invention
The schematic diagram of a endpoint label；Fig. 3 is the structural representation of a kind of camera lens and optical receiver of one embodiment of the invention
Figure；
Referring to Fig. 1, the backrest-type twin-lens light axis consistency test fixture, tested twin-lens includes to tie back-to-back
The first camera lens and the second camera lens of structure setting；First camera lens and the second camera lens are separately positioned in camera, and camera is equipped with and PC
The USB interface that machine is communicatively coupled；In Fig. 1, DUT is measured piece, and Fixture is fixed device, and USB is that general serial is total
Line, PC are personal computer；
Smelting tool includes jig platform and graph card, and graph card and twin-lens are separately positioned on smelting tool platform, and graph card is located at bimirror
The object space of head；
Referring to fig. 2, marker graphic of the setting with rotational variability on graph card, marker graphic include a central point label
O and four endpoint marks A, B, C and D；Line between non-conterminous two endpoints label is mutually perpendicular to equal part, and central point mark
Note coincides with perpendicular bisected point；As shown in Fig. 2, the line between endpoint label A and B, C and D is mutually perpendicular to equal part, and center
Point label O coincides with perpendicular bisected point；
The camera lens face of twin-lens is parallel with the graph card face of corresponding graph card respectively, the central point label and twin-lens of graph card
Center between line it is vertical with the camera lens face of twin-lens；At this point it is possible to be respectively perpendicular by adjusting graph card and camera lens face
Have surface or the pedestal desktop of platform in smelting to correct and guarantee above-mentioned requirements；
Referring to Fig. 3, the first optical receiver of square is separately installed with behind the first camera lens 11, the second camera lens 12
21, the second optical receiver 22, line between the central point of the first optical receiver 21 and the central point of the first camera lens 11 with
The camera lens face of first camera lens 11 is vertical, the line between the central point of the second optical receiver 22 and the central point of the second camera lens 12
It is vertical with the camera lens face of the second camera lens 12.
It should be noted that optical receiver 2 uses CCD (imaging sensor).In this way, not needing in the present embodiment to mirror
The parameters such as tilt angle, offset deviation and the rotation error of head optical axis are surveyed respectively using different testing tool and means of testing
Examination, to solve testing tool, structure is complicated, the degree of automation is low, test process is cumbersome, test period is long, test result error
The problems such as larger.The present embodiment can directly complete the test of above-mentioned camera lens optical axis parameter using a set of test smelting tool, thus simple
Change test process, improve testing efficiency, reduces testing cost；The present embodiment makes PC machine say the word by USB fabric to camera
It takes pictures, obtains the first camera lens and the second camera lens respectively to the first image and the second image of marker graphic imaging, then lead to
The software scans picture in PC machine is crossed, obtains the coordinate of central point label O and the coordinate of endpoint label A, B, C and D respectively,
Again by the software installed in PC machine, the first image and the second image obtain to camera shooting carries out processing analysis, will analyze
As a result it is compared with the examination criteria set in software, automatically derived test result, is not necessarily to manual control testing procedure, is not necessarily to
It manual analysis contrast images and obtains test result, to significantly reduce the disturbing factor artificially participated in, improves test
The degree of automation, substantially reduce test result error, improve testing efficiency and test result accuracy.
Embodiment two
It is a kind of specific implementation institute of the emphasis to backrest-type twin-lens light axis consistency test fixture in the present embodiment
The explanation done, other content is referring to the other embodiment of the present invention.Fig. 4 is that the twin-lens of one embodiment of the invention is fixed on can
Structural schematic diagram on the lens mount of 180 ° of rotations；A kind of specific implementation of the backrest-type twin-lens light axis consistency test fixture
Mode is as follows:
Referring to fig. 4, tested twin-lens includes the first camera lens 11 and the second camera lens 12 being arranged with back to back structure；The
One camera lens 11 and the second camera lens 12 are separately positioned in camera 3；
Twin-lens be fixed on can 180 ° rotation lens mounts 4 on, lens mount 4 be mounted on smelting tool platform on；Graph card is arranged in smelting
Has one end of platform.
In this way, revolving mirror headstock 4 can be passed through after camera takes pictures and obtains the first camera lens 11 to the image of graph card imaging
It takes pictures easily continuing to use camera and obtains the second camera lens 12 to the image of graph card imaging, to efficiently continue subsequent figure
As work such as analysis, processing and comparisons, test result is promptly obtained automatically.
It should be noted that the only schematical citing of the smelting lamps structure of the present embodiment, when practical application, can be according to reality
It the condition of border situation and needs to carry out structural adjustment, specific structure as described in this embodiment is not limited to, as long as can lead to
The thinking principle of technical solution of the present invention is crossed, technical solution of the present invention technical problem to be solved is solved, obtains this hair
Technical effect acquired by bright technical solution.
Above it is found that this backrest-type twin-lens light axis consistency test fixture through this embodiment, can effectively contract
The volume of small test smelting tool reduces testing cost to save test space, improves testing efficiency.
Embodiment three
It is another specific implementation of the emphasis to backrest-type twin-lens light axis consistency test fixture in the present embodiment
The explanation done, other content is referring to the other embodiment of the present invention.Fig. 5 is that a kind of backrest-type of one embodiment of the invention is double
The main view of camera lens optical axis uniformity test jig；Fig. 6 is a kind of backrest-type twin-lens optical axis one of one embodiment of the invention
The top view of cause property test fixture；A kind of specific implementation of the backrest-type twin-lens light axis consistency test fixture is as follows:
Referring to figs. 5 and 6, tested twin-lens includes the first camera lens 11 and the second camera lens being arranged with back to back structure
12；First camera lens 11 and the second camera lens 12 are separately positioned in camera 3；
Graph card includes the first graph card 61 and the second graph card 62 for being separately positioned on smelting tool 5 both ends of platform, and twin-lens is arranged in smelting
Has the middle part of platform 5；And first graph card 61 object space of first camera lens 61 is set, the object of the second camera lens 12 is arranged in the second graph card 62
Side；The central point of first graph card 61 marks the camera lens face of line and the first camera lens 11 between the center of the first camera lens 11 to hang down
Directly；The central point of second graph card 62 marks the camera lens face of line and the second camera lens 12 between the center of the second camera lens 12 to hang down
Directly.
In such manner, it is possible to pass through the software control camera 3 of PC machine, while taking pictures and obtaining the first camera lens 11 to 11 institute of the first graph card
The first image and the second camera lens 12 of imaging are to the second image of 62 imaging of the second graph card, to accurately and accurately continue
The work such as subsequent image analysis, processing and comparison, promptly obtain test result automatically.
It should be noted that the only schematical citing of the smelting lamps structure of the present embodiment, when practical application, can be according to reality
It the condition of border situation and needs to carry out structural adjustment, specific structure as described in this embodiment is not limited to, as long as can lead to
The thinking principle of technical solution of the present invention is crossed, technical solution of the present invention technical problem to be solved is solved, obtains this hair
Technical effect acquired by bright technical solution.
Above it is found that this backrest-type twin-lens light axis consistency test fixture through this embodiment, can reduce survey
Try is rapid, reduces artificial degree of participation, to effectively shorten test period, reduces test error, improves testing efficiency and test
Accuracy.
Example IV
It is emphasis in the present embodiment to the marker graphic institute on the graph card of backrest-type twin-lens light axis consistency test fixture
The explanation done, other content is referring to the other embodiment of the present invention.Fig. 7 is marker graphic on the graph card of one embodiment of the invention
Schematic diagram；A kind of specific implementation of marker graphic is such as on the graph card of the backrest-type twin-lens light axis consistency test fixture
Under:
Referring to Fig. 7, marker graphic is cruciform pattern.With reference to Fig. 2 it is found that the cruciform pattern can be realized including one
Central point marks O and four endpoint to mark A, B, C and D；Line between non-conterminous two endpoints label is mutually perpendicular to equal part,
And central point label coincides with perpendicular bisected point；As shown in Fig. 2, the line between endpoint label A and B, C and D is mutually perpendicular to
Equal part, and central point label O coincides with perpendicular bisected point.
It should be noted that the only schematical citing of the marker graphic of the present embodiment, when practical application, can be according to reality
The condition and needs of border situation are adjusted, and are not limited to specific structure as described in this embodiment, as long as meeting has
The marker graphic of the condition of rotational variability, can thinking principle according to the technical solution of the present invention, solve skill of the invention
Art scheme technical problem to be solved obtains technical effect acquired by technical solution of the present invention.
Above it is found that mark on the graph card of this backrest-type twin-lens light axis consistency test fixture through this embodiment
Remember figure, the marker graphic of criss-cross intersection can be used, said the word by PC machine through USB interface and taken pictures to camera 4,
The first camera lens 11 and the second camera lens 12 are obtained respectively to the first image and the second image of marker graphic imaging, then pass through PC machine
In software scans picture, obtain the intersection point of the marker graphic of criss-cross intersection respectively, i.e. the coordinate of central point label O, with
And the coordinate of endpoint label A, B, C and D, then the software by installing in PC machine, the first image obtained to the shooting of camera 3 and the
Two images carry out processing analysis, will analyze the examination criteria set in result and software and compare, automatically derived test result,
To quickly and accurately complete test.
Embodiment five
It is emphasis in the present embodiment to the marker graphic institute on the graph card of backrest-type twin-lens light axis consistency test fixture
The explanation done, other content is referring to the other embodiment of the present invention.Fig. 8 is label figure on the graph card of another embodiment of the present invention
The schematic diagram of shape；A kind of specific implementation of marker graphic on the graph card of the backrest-type twin-lens light axis consistency test fixture
It is as follows:
Referring to Fig. 8, marker graphic is that marker graphic is rectangle frame figure, with reference to Fig. 2 it is found that the same energy of rectangle frame figure
Enough realize includes that a central point marks O and four endpoint to mark A, B, C and D；Company between non-conterminous two endpoints label
Line is mutually perpendicular to equal part, and central point label coincides with perpendicular bisected point；As shown in Figure 2 and Figure 8, endpoint label A and B, C and
Line between D is mutually perpendicular to equal part, and central point label O coincides with perpendicular bisected point.
It should be noted that the only schematical citing of the marker graphic of the present embodiment, when practical application, can be according to reality
The condition and needs of border situation are adjusted, and are not limited to specific structure as described in this embodiment, as long as meeting has
The marker graphic of rotational variability condition, can thinking principle according to the technical solution of the present invention, solve technology of the invention
Scheme technical problem to be solved obtains technical effect acquired by technical solution of the present invention.
Above it is found that mark on the graph card of this backrest-type twin-lens light axis consistency test fixture through this embodiment
Remember figure, the marker graphic of rectangle frame can be used, equally said the word by PC machine through USB interface and taken pictures to camera 3, point
The first camera lens 11 and the second camera lens 12 are not obtained to the first image and the second image of marker graphic imaging, then by PC machine
Software scans picture, obtain the intersection point of the marker graphic of criss-cross intersection respectively, i.e. the coordinate of central point label O, and
Endpoint marks the coordinate of A, B, C and D, then the software by installing in PC machine, the first image and second obtained to the shooting of camera 3
Image carries out processing analysis, will analyze the examination criteria set in result and software and compares, thus same automatically derived survey
Test result, to quickly and accurately complete test.
Embodiment six
Fig. 9 is the schematic diagram of the tilt angle test of the camera lens optical axis of one embodiment of the invention；Figure 10 is the present invention one
The schematic diagram of tested screen test and optical receiver portion in the tilt angle test of the camera lens optical axis of a embodiment；
Referring to Fig. 3, Fig. 9 and Figure 10, a kind of backrest-type twin-lens light axis consistency test method, tested twin-lens packet
Include the first camera lens and the second camera lens being arranged with back to back structure；Using such as the leaning against to any one of embodiment five of embodiment one
Formula twin-lens light axis consistency test fixture, comprising the following steps:
Graph card and twin-lens are placed on jig platform, and graph card is made to be located at the object space of twin-lens, and the camera lens face of twin-lens is divided
Line and twin-lens not parallel with the graph card face of corresponding graph card, between the central point label of graph card and the center of twin-lens
Camera lens face it is vertical；
As shown in figure 3, installing the first optical receiver of square respectively behind the first camera lens 11, the second camera lens 12
21, the second optical receiver 22, line between the central point of the first optical receiver 21 and the central point of the first camera lens 11 with
The camera lens face of first camera lens 11 is vertical, the line between the central point of the second optical receiver 22 and the central point of the second camera lens 12
It is vertical with the camera lens face of the second camera lens 12；
Camera is subjected to data communication connection by USB interface and PC machine, software is installed in advance in PC machine, passes through software
The camera of control the first camera lens of control and the second camera lens is taken pictures, and the first figure of the corresponding graph card of the first camera lens shooting is obtained
Second image of picture and the corresponding graph card of the second camera lens shooting；
As shown in Figure 9 and Figure 10, according to the first image of acquisition and the second image, detect the primary optic axis of the first camera lens with
Tilt angle between second optical axis of the second camera lens；In Fig. 9, marker graphic 63 is arranged on graph card 6；In Figure 10,7 be optics
The vertical line of the plane of receiver, 8 be the optical axis of tested screen test, i.e. primary optic axis or the second optical axis.
If the tilt angle between the primary optic axis of the first camera lens and the second optical axis of the second camera lens meets setting detection mark
It is quasi-, it is concluded that tested twin-lens qualification test result, otherwise obtain the underproof test result of tested twin-lens, and tie
Beam test.
Above it is found that this backrest-type twin-lens light axis consistency test method through this embodiment, directly uses one
Set test smelting tool, can complete the test to camera lens optical axis parameter, simplify test process, improve testing efficiency, reduce test at
This；The present embodiment PC machine say the word by USB fabric to take pictures to camera, obtain the first camera lens and the second camera lens respectively
To the first image and the second image of marker graphic imaging, then by the software scans picture in PC machine, with reference to Fig. 2, respectively
The coordinate of central point label O and the coordinate of endpoint label A, B, C and D, then the software by installing in PC machine are obtained, to phase
The first image and the second image that machine shooting obtains carry out processing analysis, will analyze the examination criteria that is set in result and software into
Row comparison, automatically derived test result are not necessarily to manual control testing procedure, without manual analysis contrast images and obtain test knot
Fruit improves the degree of automation of test, substantially reduces test result to significantly reduce the disturbing factor artificially participated in
Error improves testing efficiency and test result accuracy.
Embodiment seven
It is the further tool that emphasis does the step of backrest-type twin-lens light axis consistency test method in the present embodiment
Body explanation, other content is referring to the other embodiment of the present invention.The backrest-type twin-lens light axis consistency test side of the present embodiment
Method, referring to fig. 2, Fig. 3 and Fig. 9, Figure 10 detect the primary optic axis of the first camera lens according to the first image and the second image of acquisition
Tilt angle between the second optical axis of the second camera lens, comprising:
The central point label coordinate and four endpoint label coordinates for obtaining the first image are respectively O1 (x11, y11), A1
(x12, y12), B1 (x13, y13), C1 (x14, y14) and D1 (x15, y15)；Obtain the second image central point label coordinate and
Four endpoint label coordinates are respectively O2 (x21, y21), A2 (x22, y22), B2 (x23, y23), C2 (x24, y24) and D2
(x25, y25)；
According to following relational expression calculate primary optic axis vertical direction tilt angle K11 and primary optic axis in the horizontal direction
Tilt angle K12:
K11=(O1A1-O1B1)；
K12=(O1C1-O1D1)；
If K11 > 0, primary optic axis has the angle tilted down, if K11 < 0, primary optic axis has upward
Inclined angle；
According to following relational expression calculate the second optical axis the tilt angle K21 of vertical direction and the second optical axis in the horizontal direction
Tilt angle K22:
K21=(O2A2-O2B2)；
K22=(O2C2-O2D2)；
If K21 > 0, the second optical axis has the angle tilted down, if K21 < 0, the second optical axis has upward
Inclined angle；
By the inclination upper limit value Pixel MAX phase of the numerical value of K11, K12, K21 and K22 for measuring and preset optical axis
Compare:
If K11 > Pixel MAX or K12 > Pixel MAX or K21 > Pixel MAX or K22 > Pixel MAX, it is concluded that
The tested underproof test result of twin-lens；
If K11 < Pixel MAX and K12 < Pixel MAX and K21 < Pixel MAX and K22 < Pixel MAX,
Obtain the test result of tested twin-lens qualification.
Above it is found that this backrest-type twin-lens light axis consistency test method through this embodiment, can pass through PC
Software in machine, the first image and the second image obtain to camera shooting carry out processing analysis, will be in analysis result and software
The examination criteria of setting compares, automatically derived test result, without manual analysis contrast images and obtains test result, makes
Test automation is obtained, testing efficiency and test result accuracy are improved.
Embodiment eight
Emphasis in the present embodiment to backrest-type twin-lens light axis consistency test method testing lens optical axis inclination
After angle, continue the further explanation of the other parameters of testing lens optical axis, other content is referring to other implementations of the invention
Example.The backrest-type twin-lens light axis consistency test method of the present embodiment, in the primary optic axis and the according to the first camera lens of detection
It further include following steps after tilt angle between second optical axis of two camera lenses obtains the test result of tested twin-lens qualification
It is rapid:
According to the tilt angle for detecting resulting primary optic axis and the second optical axis, school is carried out to the first image and the second image
Just, it is influenced with eliminating primary optic axis and the second inclined light shaft bring；
Continue to test offset deviation between the primary optic axis of the first camera lens and the second optical axis of the second camera lens, rotation error
In one or two.It is the schematic diagram of the rotation error test of the camera lens optical axis of one embodiment of the invention referring to Figure 11.
Above it is found that this backrest-type twin-lens light axis consistency test method through this embodiment, can have comprehensively
The parameters of camera lens optical axis are tested on effect ground, to improve the comprehensive and reliability of test result.
Embodiment nine
Emphasis in the present embodiment to backrest-type twin-lens light axis consistency test method testing lens optical axis inclination
After angle, continue testing lens optical axis offset deviation when the step of done further illustrate, other content ginseng
See the other embodiment of the present invention.A kind of backrest-type twin-lens light axis consistency test method of the present embodiment detects the first mirror
Offset deviation between the primary optic axis of head and the second optical axis of the second camera lens, comprising:
Central point label on the first image and the second image that will acquire all is moved to the center of a rectangle comparison frame
Position calculates the deviation of central point label in the X direction on the first image and the second image according to following relational expression respectively
Δ X and deviation Δ Y in the Y direction:
Δ X=X11-X21；
Δ Y=Y11-Y21；
By the numerical value of the Δ X measured and Δ Y respectively with upper deviation value X_Max and the Y_Max phase of preset optical axis
Compare:
If Δ x > X_Max or Δ y > Y_Max is, it is concluded that be tested the underproof test result of twin-lens, and terminate
Test；
If Δ x < X_Max and Δ y < Y_Max are, it is concluded that be tested the test result of twin-lens qualification, or continue to test
Rotation error between the primary optic axis of first camera lens and the second optical axis of the second camera lens.
It should be noted that in X-direction and Y-direction of the Δ X and Δ Y i.e. respectively between primary optic axis and the second optical axis
Offset deviation, when detecting the offset deviation between the primary optic axis of the first camera lens and the second optical axis of the second camera lens, such as embodiment
Eight, first the first image and the second image are corrected, to eliminate the influence of inclined light shaft bring, then again by the first image and
The picture that central point marks on second image is moved respectively to the center of the rectangle of optical receiver, then calculates above-mentioned deviation Δ X
With Δ Y, the drift condition of primary optic axis and the second optical axis is judged using the deviation.
Figure 12 is a kind of result schematic diagram of the offset deviation test of the camera lens optical axis of one embodiment of the invention；Such as Figure 12
Shown, dotted line is that resulting first image is imaged to marker graphic in the first camera lens of shooting, and solid line is the second camera lens of shooting to label
Resulting second image of pattern imaging, it is seen then that if Δ x > X_Max, Δ y > Y_Max is, it is concluded that tested twin-lens is unqualified
Test result, terminate test.
Figure 13 is another result schematic diagram of the offset deviation test of the camera lens optical axis of one embodiment of the invention；Such as figure
Shown in 13, dotted line is that resulting first image is imaged to marker graphic in the first camera lens of shooting, and solid line is the second camera lens of shooting to mark
Remember resulting second image of pattern imaging, it is seen then that if Δ x>X_Max, Δ y<Y_Max is not, it is concluded that tested twin-lens conforms to
The test result of lattice terminates test.
Figure 14 is another result schematic diagram of the offset deviation test of the camera lens optical axis of one embodiment of the invention；Such as figure
Shown in 14, dotted line is that resulting first image is imaged to marker graphic in the first camera lens of shooting, and solid line is the second camera lens of shooting to mark
Remember resulting second image of pattern imaging, it is seen then that if Δ x<X_Max, Δ y>Y_Max is not, it is concluded that tested twin-lens conforms to
The test result of lattice terminates test.
Figure 15 is another result schematic diagram of the offset deviation test of the camera lens optical axis of one embodiment of the invention；Such as figure
Shown in 15, dotted line is that resulting first image is imaged to marker graphic in the first camera lens of shooting, and solid line is the second camera lens of shooting to mark
Remember resulting second image of pattern imaging, it is seen then that if Δ x < X_Max, Δ y < Y_Max is, it is concluded that tested twin-lens is qualified
Test result, or continue to test the rotation error between the primary optic axis of the first camera lens and the second optical axis of the second camera lens.
Above it is found that this backrest-type twin-lens light axis consistency test method through this embodiment, can facilitate height
The offset deviation of effect, accurately and reliably detector lens optical axis is conducive to improve product quality, improves yield rate.And its analysis and
As a result it is realized by computer software, so that test automation, improves testing efficiency and test result accuracy.
Embodiment ten
Emphasis in the present embodiment to backrest-type twin-lens light axis consistency test method testing lens optical axis inclination
After angle or offset deviation, continue testing lens optical axis rotation error when the step of done further illustrate,
Other content is referring to the other embodiment of the present invention.Referring to Figure 11, a kind of backrest-type twin-lens light axis consistency of the present embodiment
Test method detects the rotation error between the primary optic axis of the first camera lens and the second optical axis of the second camera lens, comprising:
The orthogonal side of first optical receiver of square, the second optical receiver is schemed with the label respectively
Line in shape between non-conterminous two endpoint labels is parallel；That is the first square optical receiver, the second light
It is parallel to learn line of the orthogonal side of receiver respectively between endpoint label A and B, C and D；
It is chosen respectively on the first image and the second image of acquisition formed same between non-conterminous two endpoints label
The first straight line and second straight line in direction choose one and first straight line and the equidirectional side of second straight line on optical receiver
Line compares first straight line and second straight line with sideline, measure respectively first straight line, second straight line and sideline at rotation
Angle A ngle1, Angle2 calculates rotation error Δ Angle according to following relational expression:
Δ Angle=fabs (Angle1-Angle2)；
The Δ Angle measured is compared with the rotation error upper limit value Angle Max of preset optical axis:
If Δ Angle > Angle Max is, it is concluded that be tested the underproof test result of twin-lens, and terminate to test；
If Δ Angle < Angle Max is, it is concluded that be tested the test result of twin-lens qualification, or continue to test first
Offset deviation between the primary optic axis of camera lens and the second optical axis of the second camera lens.
Figure 16 is a kind of result schematic diagram of the rotation error test of the camera lens optical axis of one embodiment of the invention, such as Figure 16
Shown, dotted line is that resulting first image is imaged to marker graphic in the first camera lens of shooting, and solid line is the second camera lens of shooting to label
Resulting second image of pattern imaging, it is seen then that there are rotation errors between primary optic axis and the second optical axis.It should be noted that
After the tilt angle of detector lens optical axis, the offset deviation of camera lens optical axis can be continued to test, can continue to detection mirror
The rotation error of head optical axis, behind both the not no sequencing of detection between parameter requirement, only continuing to test below
It before the two parameter, needs to be corrected the first image and the second image, to eliminate primary optic axis and the second inclined light shaft band
The influence come.And if after being corrected to image, then having carried out camera lens after the tilt angle of detector lens optical axis
The offset deviation or rotation error of optical axis and then when detecting to a remaining parameter, then directly detection, no longer needs to
The secondary correction for carrying out image.
Above it is found that this backrest-type twin-lens light axis consistency test method through this embodiment, can facilitate height
The rotation error of effect, accurately and reliably detector lens optical axis is conducive to improve product quality, improves yield rate.And its analysis and
As a result it is realized by computer software, so that test automation, improves testing efficiency and test result accuracy.
The above is merely preferred embodiments of the present invention, it is not intended to limit the scope of the present invention.It is all in this hair
Any modification, equivalent replacement, improvement and so within bright spirit and principle, are included within the scope of protection of the present invention.
Claims (9)
1. a kind of backrest-type twin-lens light axis consistency test fixture, the tested twin-lens includes being set with back to back structure
The first camera lens and the second camera lens set；First camera lens and second camera lens are separately positioned in camera, on the camera
Equipped with the USB interface being communicatively coupled with PC machine, which is characterized in that the smelting tool includes jig platform and graph card, the graph card
It is separately positioned on the smelting tool platform with the twin-lens, and the graph card is located at the object space of the twin-lens；
Setting has the marker graphic of rotational variability on the graph card, and the marker graphic includes a central point label and four
A endpoint label；Line between non-conterminous two endpoints label is mutually perpendicular to equal part, and central point label with it is vertical
Along ent coincides；
The camera lens face of the twin-lens is parallel with the graph card face of corresponding graph card respectively, the central point label of the graph card and institute
The line stated between the center of twin-lens is vertical with the camera lens face of the twin-lens；
The first optical receiver, the second optics of square are separately installed with behind first camera lens, second camera lens
Receiver, line and first mirror between the central point of first optical receiver and the central point of first camera lens
The camera lens face of head is vertical, line and institute between the central point of second optical receiver and the central point of second camera lens
The camera lens face for stating the second camera lens is vertical.
2. backrest-type twin-lens light axis consistency test fixture as described in claim 1, which is characterized in that the twin-lens is solid
Being scheduled on can be on the lens mount of 180 ° of rotations, and the lens mount is mounted on smelting tool platform；The graph card setting has in the smelting
One end of platform.
3. backrest-type twin-lens light axis consistency test fixture as described in claim 1, which is characterized in that the graph card includes
It is separately positioned on first graph card and the second graph card at smelting tool platform both ends, the twin-lens is arranged in the smelting tool platform
Portion；And the object space of first camera lens is arranged in first graph card, the object of second camera lens is arranged in second graph card
Side；The central point of first graph card marks the camera lens of line and first camera lens between the center of first camera lens
Face is vertical；The central point of second graph card marks and the line and second camera lens between the center of second camera lens
Camera lens face is vertical.
4. backrest-type twin-lens light axis consistency test fixture as claimed in any one of claims 1-3, which is characterized in that institute
Stating marker graphic is cruciform pattern or rectangle frame figure.
5. a kind of backrest-type twin-lens light axis consistency test method, the tested twin-lens includes being set with back to back structure
The first camera lens and the second camera lens set；It is characterized in that, using backrest-type bimirror according to any one of claims 1 to 4
Head light axis consistency test fixture, comprising the following steps:
Graph card and the twin-lens are placed on the jig platform, and the graph card is made to be located at the object space of the twin-lens, it is described
The camera lens face of twin-lens is parallel with the graph card face of corresponding graph card respectively, the central point label of the graph card and the twin-lens
Center between line it is vertical with the camera lens face of the twin-lens；
The first optical receiver, the second optics of square are installed respectively behind first camera lens, second camera lens
Receiver, line and first mirror between the central point of first optical receiver and the central point of first camera lens
The camera lens face of head is vertical, line and institute between the central point of second optical receiver and the central point of second camera lens
The camera lens face for stating the second camera lens is vertical；
The camera is subjected to data communication connection by USB interface and the PC machine, software is installed in advance in the PC machine,
It is taken pictures by the camera that the software control controls first camera lens and second camera lens, obtains first camera lens
The second of first image of the corresponding graph card of shooting and the corresponding graph card of second camera lens shooting
Image；
According to the first image of acquisition and second image, the primary optic axis and described second of first camera lens is detected
Tilt angle between second optical axis of camera lens；
If the tilt angle between the primary optic axis of first camera lens and the second optical axis of second camera lens meets setting inspection
Mark it is quasi-, it is concluded that tested twin-lens qualification test result, otherwise obtain the underproof test result of tested twin-lens,
And terminate to test.
6. backrest-type twin-lens light axis consistency test method as claimed in claim 5, which is characterized in that described according to acquisition
The first image and second image, detect the primary optic axis of first camera lens and the second light of second camera lens
Tilt angle between axis, comprising:
The central point label coordinate and four endpoint label coordinates for obtaining the first image are respectively O1 (x11, y11), A1
(x12, y12), B1 (x13, y13), C1 (x14, y14) and D1 (x15, y15)；The central point label for obtaining second image is sat
Mark and four endpoint label coordinates are respectively O2 (x21, y21), A2 (x22, y22), B2 (x23, y23), C2 (x24, y24) and D2
(x25, y25)；
The primary optic axis is calculated in the tilt angle K11 of vertical direction and the primary optic axis in level according to following relational expression
The tilt angle K12 in direction:
K11=(O1A1-O1B1)；
K12=(O1C1-O1D1)；
If K11 > 0, the primary optic axis has the angle tilted down, if K11 < 0, the primary optic axis has
Acclivitous angle；
Second optical axis is calculated in the tilt angle K21 of vertical direction and second optical axis in level according to following relational expression
The tilt angle K22 in direction:
K21=(O2A2-O2B2)；
K22=(O2C2-O2D2)；
If K21 > 0, second optical axis has the angle tilted down, if K21 < 0, second optical axis has
Acclivitous angle；
By the numerical value of K11, K12, K21 and K22 for measuring compared with the inclination upper limit value Pixel MAX of preset optical axis
Compared with:
If K11 > Pixel MAX or K12 > Pixel MAX or K21 > Pixel MAX or K22 > PixelMAX are, it is concluded that tested
Try the underproof test result of twin-lens；
If K11 < Pixel MAX and K12 < Pixel MAX and K21 < Pixel MAX and K22 < Pixel MAX, it is concluded that
The test result of tested twin-lens qualification.
7. such as backrest-type twin-lens light axis consistency test method described in claim 5 or 6, which is characterized in that according to inspection
The tilt angle surveyed between the primary optic axis of first camera lens and the second optical axis of second camera lens obtains tested bimirror
Further include following step after the qualified test result of head:
According to the tilt angle for detecting the resulting primary optic axis and second optical axis, to the first image and described the
Two images are corrected, and are influenced with eliminating the primary optic axis and the second inclined light shaft bring；
It continues to test the offset deviation between the primary optic axis of first camera lens and the second optical axis of second camera lens, rotate
One in error or two.
8. backrest-type twin-lens light axis consistency test method as claimed in claim 7, which is characterized in that described in the detection
Offset deviation between the primary optic axis of first camera lens and the second optical axis of second camera lens, comprising:
Central point label in the first image and second image that will acquire all is moved to a rectangle comparison
The center of frame calculates the central point mark in the first image and second image according to following relational expression respectively
Remember deviation Δ X in the X direction and deviation Δ Y in the Y direction:
Δ X=X11-X21；
Δ Y=Y11-Y21；
The numerical value of the Δ X measured and Δ Y is compared with upper deviation the value X_Max and Y_Max of preset optical axis respectively:
If Δ x > X_Max or Δ y > Y_Max is, it is concluded that be tested the underproof test result of twin-lens, and terminate to test；
If Δ x < X_Max and Δ y < Y_Max are, it is concluded that be tested the test result of twin-lens qualification, or continue to test described
Rotation error between the primary optic axis of first camera lens and the second optical axis of second camera lens.
9. backrest-type twin-lens light axis consistency test method as claimed in claim 8, which is characterized in that described in the detection
Rotation error between the primary optic axis of first camera lens and the second optical axis of second camera lens, comprising:
By square first optical receiver, second optical receiver orthogonal side respectively with the mark
Remember that the line on figure between non-conterminous two endpoint labels is parallel；
Chosen respectively in the first image of acquisition and second image between non-conterminous two endpoints label institute at
Equidirectional first straight line and second straight line, one article and the first straight line and described the are chosen on the optical receiver
The first straight line and the second straight line are compared with the sideline, measure institute respectively by the equidirectional sideline of two straight lines
State first straight line, the second straight line and the sideline at rotation angle Angle1, Angle2, calculated according to following relational expression
Rotation error Δ Angle:
Δ Angle=fabs (Angle1-Angle2)；
The Δ Angle measured is compared with the rotation error upper limit value Angle Max of preset optical axis:
If Δ Angle > Angle Max is, it is concluded that be tested the underproof test result of twin-lens, and terminate to test；
If Δ Angle < Angle Max is, it is concluded that be tested the test result of twin-lens qualification, or continue to test described first
Offset deviation between the primary optic axis of camera lens and the second optical axis of second camera lens.
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| CN109297680B (en) * | 2018-08-14 | 2021-07-06 | 奥比中光科技集团股份有限公司 | Method and device for detecting optical axis deviation error value |
| CN109470450B (en) * | 2018-10-16 | 2020-07-31 | 浙江舜宇光学有限公司 | Method and device for evaluating parallelism of optical axes of double-camera lens group and computer medium |
| CN109459217A (en) * | 2018-12-30 | 2019-03-12 | 河南同城光电有限公司 | A kind of the camera lens projection aspiration jig and application method of projector |
| CN113064248A (en) * | 2021-03-29 | 2021-07-02 | 南昌欧菲光电技术有限公司 | Optical alignment method of camera, camera and electronic equipment |
| CN113840136B (en) * | 2021-09-03 | 2023-12-01 | 大连中科创达软件有限公司 | Method and device for detecting camera installation precision |
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