CN206832435U - A kind of test device for wearing display device - Google Patents
A kind of test device for wearing display device Download PDFInfo
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- CN206832435U CN206832435U CN201720423755.1U CN201720423755U CN206832435U CN 206832435 U CN206832435 U CN 206832435U CN 201720423755 U CN201720423755 U CN 201720423755U CN 206832435 U CN206832435 U CN 206832435U
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Abstract
A kind of test device for wearing display device is the utility model is related to, to solve the problems, such as to wear the detection of display device optical property.Including caliberating device, wear display device calibration apparatus, image receiving system, image processing system and guide rail；Caliberating device, including support and scaling board, support are mounted on fixed guide rail, guide rail is placed in the centre position of two cameras, support is placed in front of camera lens, and support can adjust length along being stretched perpendicular to ground direction, and can be moved to setting position along guide rail direction；Display device calibration apparatus is worn, is formed by wearing display device displacement platform and fixing device, wears display device in described fixing device, the fixing device is arranged on described wear on display device displacement platform；Image processing system, it is made up of computer, is connected by netting twine with two cameras.With advantages below：1）, can complete detection wear the imaging features and optical property of display device, 2）, detection it is reliable, speed is fast, 3）, cost it is low.
Description
Technical field
A kind of test device is the utility model is related to, more particularly to a kind of dress for wearing display device optical performance test
Put.
Background technology
The existing optical performance test for wearing display device depends on human eye evaluation.Due to human eye evaluation subjectivity compared with
By force, no quantization standard, the features such as interpersonal deviation is big, can not be suitable for the image quality evaluation for wearing display device.And lack
The evaluable methods for wearing display device of number, function is single, and testing cost is high, and complex operation, time-consuming.Retouched based on above-mentioned
State, how to solve the problems, such as that wearing the detection of display device optical property turns into the task of top priority.
The content of the invention
In view of the above-mentioned problems, technical problem to be solved in the utility model is to provide a kind of test for wearing display device
Device, to solve the problems, such as to wear the detection of display device optical property.
In order to solve the above technical problems, the utility model takes following technical scheme：
A kind of test device for wearing display device, it is characterised in that it includes caliberating device, wears display device adjustment
Device, image receiving system, image processing system and guide rail；
Image receiving system, by the object lens of structure identical first and the second object lens, structure identical first camera and second
Camera, structure identical first camera displacement platform and second camera displacement platform and base composition, the first object lens are fixed on the
On one camera, the second object lens are fixed in second camera, and first camera is arranged on first camera displacement platform, second camera peace
On second camera displacement platform, first camera displacement platform and second camera displacement platform are fixed on base, Er Qie
One object lens, the optical axis of the second object lens are parallel to each other, the photosurface of first camera and second camera photo-sensitive cell respectively with the first thing
The image plane of mirror and the second object lens overlaps, and the camera lens of first camera and second camera be respectively aligned to wear display device two are aobvious
Show module, adjustment wear two display modules of display device optical axis and first camera and second camera where optical axis be total to
Line, first camera and second camera are provided with image pick-up card, and the testing image collected is uploaded at image by image pick-up card
Reason system is analyzed and handled；
Caliberating device, including support and scaling board, support are mounted on fixed guide rail, and guide rail is placed in the interposition of two cameras
Put, support is placed in front of camera lens, and support can be along perpendicular to the flexible adjustment length in ground direction, and can be along leading
Rail direction is moved to setting position；
Display device calibration apparatus is worn, is formed by wearing display device displacement platform and fixing device, is worn display and set
Standby to be arranged in described fixing device, the fixing device is arranged on described wear on display device displacement platform；
Image processing system, it is made up of computer, is connected by netting twine with two cameras.
The scaling board includes being printed on the scaling board a of grid reference pattern and is printed on the mark of oblique quadrate array reference pattern
Fixed board b.
The first camera displacement platform and second camera displacement platform are made up of XYZR four axis platforms.
The display device displacement platform of wearing is made up of XYZ three-axis platforms.
The first camera, second camera use CCD camera or CMOS cameras.
For the utility model due to taking above technical scheme, it has advantages below：
1）, can complete detection wear the imaging features and optical property of display device
2）, detection it is reliable, speed is fast
3）, cost it is low.
Brief description of the drawings
Fig. 1 is the system general diagram for wearing display equipment test device
Fig. 2 is test device calibration apparatus and image receiving system structure chart
Fig. 3 is the functional block diagram of test device processing system
Fig. 4 is the flow chart for offseting test module demarcation test device
Fig. 5 is skew test module flow chart
Fig. 6 a are scaling board a patterns
Fig. 6 b are scaling board b patterns
Fig. 6 c are lighting apparatus structural representations
Fig. 7 is the test equipment ken (FOV) test flow chart.
Embodiment
It is described in detail with reference to the accompanying drawings and examples to of the present utility model.
Below exemplified by testing intelligent glasses, specific embodiment of the present utility model is described.
Fig. 1 is the system general diagram of one embodiment test device of the present utility model, as seen from Figure 1：The utility model
System include caliberating device, wear display device calibration apparatus, image receiving system, image processing system, output system and
Guide rail.Caliberating device pattern is made up of big visual field grid reference and the oblique quadrate array benchmark of big visual field.Image processing system by
Computer is formed, and output system shows result and data.
Referring to Fig. 2, Fig. 2 is to wear display device calibration apparatus and image receiving system structure chart.Image receiving system
It is made up of image pick-up card, camera, displacement platform and base etc., camera can be CCD camera, CMOS cameras or other digital phases
Machine, CCD camera is used in the present embodiment, specifically, image receiving system is by structure identical the first object lens 21 and the second object lens
22, structure identical the first CCD camera 23 and the second CCD camera 24, the first CCD camera of structure identical displacement platform 25 and
Two CCD camera displacement platforms 26 and base 27 form, and its position relationship is：The first described object lens are fixed on described first
In CCD camera, the second object lens are fixed in the second described CCD camera, and the first CCD camera is arranged on the first described CCD phases
On machine displacement platform, the second CCD camera is arranged on the second described CCD camera displacement platform, then by the first described CCD phases
Machine displacement platform and the second CCD camera displacement platform are fixed on described base, and the first described object lens, the second object lens
Optical axis be parallel to each other, the photosurface of the first described CCD camera and the second CCD camera photo-sensitive cell is respectively with described
The image plane of one object lens and the second object lens overlaps；Described structure identical the first CCD camera displacement platform and the second CCD camera
Displacement platform is made up of XYZR four axis platforms, and the XYZR four axis platforms are four axle precision surface plates.The first described object lens and second
The lens group and shell mechanism part that object lens are made up of polylith lens form.The shell mechanism part include focusing ring, zoom ring,
Aperture blades and scale.The display device calibration apparatus of wearing is by wearing 29 groups of display device displacement platform 28 and fixing device
Into.Display device is worn in described fixing device 29, described fixing device 29 wears display installed in described
On equipment displacement platform 28.Wear display device displacement platform 28 to be made up of XYZ three-axis platforms, the XYZ three-axis platforms are three axles
Precision surface plate.Wear display device calibration apparatus and be used for adjustment and wear the position of display device, during test, filled by adjusting adjustment
Put and CCD camera displacement platform, make the camera lens of the first CCD camera and the second CCD camera be respectively aligned to wear the two of display device
Individual display module, adjustment are worn where optical axis and the first CCD camera and the second CCD camera of two display modules of display device
Optical axis it is conllinear, so that the first CCD camera and the shooting of the second CCD camera are worn two display module pictures of display device and shown
Image（That is testing image）, the first CCD camera 23 and the second CCD camera 24 be provided with image pick-up card, and image pick-up card will be adopted
The testing image collected is uploaded to image processing system and is analyzed and handled.
Referring to Fig. 3, Fig. 3 is test device image processing system block diagram.The image processing system is made up of computer, bag
Include an input block, a display unit, a memory cell and a graphics processing unit.User passes through operation equipment display picture
With obtain testing image, and testing image is inputted to the processing unit.The display unit is used to show test process, test shadow
Picture and its processing result of calculation.The memory cell is used to store the head acquired in the data and CCD camera generated in test process
Wear the image of display device.
The graphics processing unit includes image import modul, skew test module, ken test module, ROI (region
Of interest, area-of-interest) recognition processing module and test module.The image import modul is used to receive input block
The input information of transmission, image importing instruction is produced according to input information after the information is identified, controls image receiving system
Obtain the image for wearing display device and acquired image is shown in display unit.The skew test module, which is used to demarcate, to be surveyed
The angle of the center offset for wearing display device and the binocular optical axis is put and detected in trial assembly.The ken test module is used for detector
Wear the ken of display device（FOV）Size, including a boundary point detection sub-module and a summit detection sub-module.The boundary point is examined
Pixel, position and its gray value that submodule is used to detect the boundary line of acquired image are surveyed, summit detection sub-module is used for
Pixel, position and its gray value on the summit of the acquired image of detection, the boundary points detection submodule and summit detection submodule
Function performed by block refers to Fig. 3.
The ROI recognition processing modules are used to extract video image interest region（ROI）Image, including ROI identification submodule
Block and ROI processing submodules.Described ROI identification submodules are used to identify the ROI in acquired image, described ROI processing
Submodule is used to carry out image procossing and analysis to acquired ROI.
The optical property that the test module wears display device for the FOV and ROI determined by this measures.
Such as modulation transfer function（MTF）Deng.
Fig. 4 be skew test module demarcate test device flow chart, skew test module demarcation test device include with
Lower step：Uncalibrated image gathers, and translation, boresight error calculates and image rectification.Specifically include following steps：1）Scaling board is put
It is placed on guide rail apart from 1m Wai Chu regions in front of CCD camera camera lens face, is preferably placed in front of CCD camera camera lens face
At 3-5m, scaling board simultaneously illuminates scaling board with light source, adjusts the image that the focusing ring of the first object lens and the second object lens obtains it
Clearly；2）In the cross image of one long a width of 200 pixel of image center position display acquired in CCD camera, described in judgement
Cross image center with demarcation pattern center coordinate difference whether default maximum deviation receive in the range of；3）If judge knot
Fruit is the records center coordinate difference, if judged result is not to receive scope in maximum deviation in the range of maximum deviation receiving
Interior, then readjust the first object lens and the second object lens, repeat step 2）；4）The centre coordinate difference and graphics processing unit are pre-
If centre coordinate difference be compared, both compare after difference be CCD camera system testing boresight error.
Fig. 5 is the flow chart of center offset and binocular vision axle clamp angle that display device is worn in skew test module detection.
Comprise the following steps：1) display device will be worn to be fixed in the fixing device 29 for wearing display device calibration apparatus, worn aobvious
Show that device systems display picture is arranged to cross pattern, focus and arrive clear position, 2）Locate position beyond CCD camera of just adjusting the distance 1m
Grid scaling board is put, grid scaling board is preferably placed at 3-5m in front of CCD camera, and 3）Calculated by pixel position
Coordinate position of the cross on grid, 4）Acquisition is calculated by coordinate position of the cross on grid and wears display device bias partially
Shifting amount.
The caliberating device includes support and the scaling board a for being printed on grid reference pattern and is printed on oblique quadrate array reference map
The scaling board b of case.As shown in Figure 6 a, described scaling board b pattern is as shown in Figure 6 b for described scaling board a pattern.Demarcation
Plate a and scaling board b using when can be securely fitted on support, freely can dismantle and change.Scaling board b is tiltedly square by 33
Shape and ladder square pattern composition.For support on the guide rail, guide rail is placed in the centre position of two cameras, guideway centreline with two
Centre position alignment between CCD camera, support are placed in front of CCD camera camera lens, and away from place, support energy beyond CCD camera 1m
It is enough to adjust length along being stretched perpendicular to ground direction, and setting position can be moved to along guide rail direction.Described demarcation
Plate a and scaling board b size are the cm of 110 x 187, and the structure of lighting apparatus is as fig. 6 c.Lighting apparatus, which is used as, illuminates mark
The light source of fixed board.
Fig. 7 is the flow chart that ken detection module detects FOV, and display equipment test device detector is worn using above-mentioned
A kind of embodiment of the FOV of display device method is worn, is comprised the following steps：
1）, image receiving system base is placed in the plane of horizontal level about 1.5m or so height, person behaviour easy to operation
Control；
2）, with two netting twines the interface of two CCD cameras in image receiving system is connected with exchange interface, and use net
The computer of image processing system is connected by line with interchanger；
3）, support be moved to setting position along guide rail direction, described branch is placed at place outside guide rail 1m in front of CCD camera
Frame, support are preferably placed at 3-5m in front of CCD camera, and scaling board a is fixed on described support, scaling board a centers
Height is consistent with the centre-height between two CCD cameras, places light source as fig. 6 c and illuminates scaling board a；
4）, the first CCD camera of regulation and the zoom ring of the second CCD camera make both focal lengths equal, and make scaling board image
It is whole to be full of shooting picture, adjust the focusing ring of the first CCD camera and the second CCD camera, the scaling board figure for photographing both
As clear, the aperture blades of the first CCD camera of regulation and the second CCD camera, make the equal picture brightness of both aperture sizes moderate；
5）, read the first CCD camera and the second CCD camera shooting picture, obtain picture catercorner length a0；
6）, by it is to be measured wear display device be arranged on wear in the fixing device 29 of display device calibration apparatus, adjustment head
Wear two display modules of display device optical axis and the first CCD camera and the second CCD camera where optical axis it is conllinear；
7）, detection is to be measured wears display device picture area marginal position and obtain that to be measured to wear display device picture diagonal
Line length a, by length a, step 5）In catercorner length a0, the first CCD camera and the focal length f of the second CCD camera and
The FOV for wearing display device is calculated in one CCD camera and the second CCD camera picture size y respectively:FOV=a/a0*2*
arctan(y/2f)。
Utilize the above-mentioned eccentric position and off-axis size worn display equipment test device detection and wear display device
A kind of embodiment of method, comprises the following steps：
1）, image receiving system base is placed in the plane of horizontal level about 1.5m or so height, person behaviour easy to operation
Control；
2）, with two netting twines the interface of two CCD cameras in image receiving system is connected with exchange interface, and use net
The computer of image processing system is connected by line with interchanger；
3）, support be moved to setting position along guide rail direction, locate to place outside two image center 1m of distance on guide rail
Described support, support are preferably placed at 3-5m in front of CCD camera, and scaling board a is fixed on support, in scaling board a
Heart height is consistent with the centre-height between two CCD cameras.Light source is placed as fig. 6 c illuminates scaling board a；
4）, the first CCD camera of regulation and the zoom ring of the second CCD camera make both focal lengths equal, and make scaling board image
Entirely it is full of shooting picture.The focusing ring of the first CCD camera and the second CCD camera is adjusted, the scaling board figure for photographing both
As clear.The equal picture brightness of both aperture blades, formula aperture size for adjusting the first CCD camera and the second CCD camera is moderate；
5）, read the picture of the first CCD camera and the shooting of the second CCD camera, demarcate in the first CCD camera and scaling board
The relative position at the center of the relative position of the heart and the second CCD camera and scaling board simultaneously records nominal data；
6）, by it is to be measured wear display device be arranged on wear in the fixing device 29 of display device calibration apparatus, adjustment head
Wear two display modules of display device optical axis and the first CCD camera and the second CCD camera where optical axis it is conllinear；
7）, by be measured wear the mainboard or control panel of display device in itself, it is aobvious in wear display device two to be measured
Show that the center of module respectively produces a cross picture, can be in the first object lens and second after the optical system by wearing display device
The object planes of object lens produces the cross virtual image, after the first object lens and the second object lens, in the first CCD camera and the second CCD camera
Cross picture is produced on photosurface respectively；
8）, according to nominal data and wear display device in the cross image position of the first CCD camera and the second CCD camera
Data calculate the center displacement amount and optical axis deviation for wearing display device.
Utilize the above-mentioned side for wearing display equipment test device detection and wearing the optical-modulation transfer function of display device
A kind of instantiation mode of method, comprises the following steps：
1）, image receiving system base is placed in the plane of horizontal level about 1.5m or so height, person behaviour easy to operation
Control；
2）, with two netting twines the interface of two CCD cameras in image receiving system is connected with exchange interface, and use net
The computer of image processing system is connected by line with interchanger；
3）, support be moved to setting position along guide rail direction, place is put beyond two image center 1m of distance on guide rail
Described support is put, support is preferably placed at 3-5m in front of CCD camera, and scaling board b is fixed on described support, is adjusted
Whole support makes the centre-height between scaling board b centre-heights and two cameras consistent.Light source is placed as fig. 6 c illuminates mark
Fixed board b；
4）, the first CCD camera of regulation and the zoom ring of the second CCD camera make both focal lengths equal, and make scaling board image
It is whole to be full of shooting picture, adjust the focusing ring of the first CCD camera and the second CCD camera, the scaling board figure for photographing both
As clear, the aperture blades of the first CCD camera of regulation and the second CCD camera, make the equal picture brightness of both aperture sizes moderate；
5）, read the first CCD camera and the second CCD camera shooting picture, calculate picture at least one interest region
Modulation transfer function value, calculating modulation transfer function in real time simultaneously includes numerical value in display unit, adjusts focusing ring
The maximum position of modulation transfer function is found, the modulating transfer function value recorded now is the modulation transfer function of test system
Value MTF0.If interest region has several, the modulation transfer function in all interest regions is recorded0(1)、MTF0(2)、…、
MTF0(n) it is the modulating transfer function value of test system；
6）, by it is to be measured wear display device be arranged on wear in the fixing device 29 of display device calibration apparatus, adjustment head
Wear two display modules of display device optical axis and the first CCD camera and the second CCD camera where optical axis it is conllinear；
7）, by display device mainboard in itself or the control panel to be measured worn in two displays to be measured for wearing display device
The center of module respectively produces an oblique quadrate array test chart, the oblique quadrate array figure as shown in Fig. 6 b, by treating gauge head
The virtual image can be produced in the first object lens and the second object lens object plane after wearing the optical system of display device, by the first object lens and the second thing
After mirror, picture is produced respectively on the photosurface of the first CCD camera and the second CCD camera；
8）, read the first CCD camera and the second CCD camera shooting picture, calculate picture in step 5）It is selected extremely
The modulation transfer function value in a few interest region, modulation transfer function is calculated in real time and includes numerical value in display unit,
Adjustment focusing ring finds the maximum position of modulation transfer function, and the modulating transfer function value recorded now is to wear display device
With the modulating transfer function value MTF of test system cascade1.If interest region has several, the modulation in all interest regions is recorded
Transmission function MTF1(1)、MTF1(2)、…、MTF1(n) for wear display device and test system cascade modulation transfer function
Value；
9）, by test system modulating transfer function value MTF0With the MTF for wearing display device and system cascade1Value is available
Wear modulation transfer function (n)=MTF of display device1(n)/MTF0(n)。
Embodiment of the present utility model is explained in detail above in conjunction with accompanying drawing, but the utility model is not limited to
Above-mentioned embodiment, in one skilled in the art's possessed knowledge, this practicality can also not departed from newly
Made a variety of changes on the premise of type objective.
Claims (5)
1. a kind of test device for wearing display device, it is characterised in that it includes caliberating device, wears display device adjustment dress
Put, image receiving system, image processing system and guide rail；
Image receiving system, by the object lens of structure identical first and the second object lens, structure identical first camera and second camera,
Structure identical first camera displacement platform and second camera displacement platform and base composition, the first object lens are fixed on first camera
On, the second object lens are fixed in second camera, and first camera is arranged on first camera displacement platform, and second camera is arranged on the
On two camera displacement platforms, first camera displacement platform and second camera displacement platform are fixed on base, and the first object lens,
The optical axis of second object lens is parallel to each other, the photosurface of first camera and second camera photo-sensitive cell respectively with the first object lens and second
The image plane of object lens overlaps, and the camera lens of first camera and second camera is respectively aligned to wear two display modules of display device,
Adjustment wear two display modules of display device optical axis and first camera and second camera where optical axis it is conllinear, the first phase
Machine and second camera are provided with image pick-up card, and the testing image collected is uploaded to image processing system and carried out by image pick-up card
Analysis and processing；
Caliberating device, including support and scaling board, support are mounted on fixed guide rail, and guide rail is placed in the centre position of two cameras,
Support is placed in front of camera lens, and support can adjust length along being stretched perpendicular to ground direction, and can be along guide rail
Direction is moved to setting position；
Display device calibration apparatus is worn, is formed by wearing display device displacement platform and fixing device, wears display device peace
In described fixing device, the fixing device is arranged on described wear on display device displacement platform；
Image processing system, it is made up of computer, is connected by netting twine with two cameras.
A kind of 2. test device for wearing display device as claimed in claim 1, it is characterised in that：The scaling board includes print
There is the scaling board a of grid reference pattern and be printed on the scaling board b of oblique quadrate array reference pattern.
A kind of 3. test device for wearing display device as claimed in claim 1, it is characterised in that：The first camera displacement
Platform and second camera displacement platform are made up of XYZR four axis platforms.
A kind of 4. test device for wearing display device as claimed in claim 1, it is characterised in that：It is described to wear display device
Displacement platform is made up of XYZ three-axis platforms.
A kind of 5. test device for wearing display device as claimed in claim 1, it is characterised in that：The first camera,
Two cameras use CCD camera or CMOS cameras.
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| CN201720423755.1U CN206832435U (en) | 2017-04-21 | 2017-04-21 | A kind of test device for wearing display device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024339A (en) * | 2017-04-21 | 2017-08-08 | 杭州蓝斯特科技有限公司 | A kind of test device and method for wearing display device |
| CN109307585A (en) * | 2018-04-26 | 2019-02-05 | 东南大学 | A kind of intelligent test system of nearly mesh formula display performance |
| CN110160749A (en) * | 2019-06-05 | 2019-08-23 | 歌尔股份有限公司 | Calibrating installation and calibration method applied to augmented reality equipment |
| CN112326206A (en) * | 2020-11-06 | 2021-02-05 | 歌尔光学科技有限公司 | AR module binocular fusion detection device and detection method |
| CN113012182A (en) * | 2021-04-25 | 2021-06-22 | 歌尔光学科技有限公司 | Offset state test method, test device and storage medium |
| CN113532274A (en) * | 2021-07-13 | 2021-10-22 | 苏州天准科技股份有限公司 | Optical image measuring apparatus, optical image measuring method, storage medium, and terminal |
| CN114815254A (en) * | 2022-04-02 | 2022-07-29 | 广州视享科技有限公司 | Head-mounted display device calibration device |
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2017
- 2017-04-21 CN CN201720423755.1U patent/CN206832435U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024339A (en) * | 2017-04-21 | 2017-08-08 | 杭州蓝斯特科技有限公司 | A kind of test device and method for wearing display device |
| CN107024339B (en) * | 2017-04-21 | 2023-10-20 | 小艾帮帮（杭州）科技有限公司 | Testing device and method for head-mounted display equipment |
| CN109307585A (en) * | 2018-04-26 | 2019-02-05 | 东南大学 | A kind of intelligent test system of nearly mesh formula display performance |
| CN110160749A (en) * | 2019-06-05 | 2019-08-23 | 歌尔股份有限公司 | Calibrating installation and calibration method applied to augmented reality equipment |
| CN110160749B (en) * | 2019-06-05 | 2022-12-06 | 歌尔光学科技有限公司 | Calibration device and calibration method applied to augmented reality equipment |
| CN112326206A (en) * | 2020-11-06 | 2021-02-05 | 歌尔光学科技有限公司 | AR module binocular fusion detection device and detection method |
| CN113012182A (en) * | 2021-04-25 | 2021-06-22 | 歌尔光学科技有限公司 | Offset state test method, test device and storage medium |
| CN113532274A (en) * | 2021-07-13 | 2021-10-22 | 苏州天准科技股份有限公司 | Optical image measuring apparatus, optical image measuring method, storage medium, and terminal |
| CN114815254A (en) * | 2022-04-02 | 2022-07-29 | 广州视享科技有限公司 | Head-mounted display device calibration device |
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