CN106017867B - A kind of detection method for rigid pipe endoscope field angle - Google Patents
A kind of detection method for rigid pipe endoscope field angle Download PDFInfo
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- CN106017867B CN106017867B CN201510130028.1A CN201510130028A CN106017867B CN 106017867 B CN106017867 B CN 106017867B CN 201510130028 A CN201510130028 A CN 201510130028A CN 106017867 B CN106017867 B CN 106017867B
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Abstract
The invention discloses a kind of detection methods for rigid pipe endoscope field angle, fixed target is replaced using liquid crystal display, endoscope circle visual field bornb sight fixed area is not needed to, omits alignment link, it does not need to prepare multiple targets, the complexity of detection work can be reduced；In liquid crystal screen display target, compared to the detection mode for the target that drafting is illuminated by light source, method of the invention is more intelligent, meanwhile, obtained testing result also can be more accurate；In the range of operating distance, using linear motor by endoscope displacement distance H, and H is arbitrary value, and positioning is more accurate, thus can improve accuracy of detection.
Description
Technical field
The present invention relates to rigid pipe endoscope optical parameter measurement technical fields more particularly to one kind to regard for rigid pipe endoscope
The detection method of rink corner.
Background technology
As Medical Devices, endoscopic optical characteristic influences its image quality, and influences diagnosis and treatment safety indirectly, therefore, depending on
Rink corner is as one of optical parameter, and measurement accuracy is higher, can more characterize endoscope characteristic, and diagnosis and treatment safety is higher.Master's thesis
" research of Medical Rigid Endoscope optical property quality control detection technique " provides a kind of regarding for detection Medical Rigid Endoscope
The device of rink corner, including guide rail, uniform source of light, target etc., target is located between uniform source of light and Medical Rigid Endoscope, wherein,
Uniform source of light and test target are inserted in mounting box, the inside and outside annulus for having known radius are drawn on target, first by rigid pipe endoscope
Visual field overlapped with outer toroid, mobile endoscope distance D, then endoscope circle visual field is made to be overlapped with interior annular on target, thus
It can determine that the field angle size of endoscope.It needs manually to be aligned due to overlapping twice, can be brought to measurement result very big
Error, so as to reduce measurement accuracy, and manual-alignment process is also cumbersome；In addition, when being taken multiple measurements to endoscope
When, it needs to prepare multiple targets with different pattern, thus can also increase the complexity and uncertainty for measuring work.
Invention content
In view of this, the present invention provides a kind of detection method for rigid pipe endoscope field angle, hard tube can be detected
The field angle of endoscope.
A kind of detection method for rigid pipe endoscope field angle includes the following steps：
Step 1 builds field angle detecting system：Liquid crystal display, endoscope holding frame and imaging CCD are mounted on straight
On line motor slide rails；Tested rigid pipe endoscope is fixed on the endoscope holding frame, makes the visual field of rigid pipe endoscope
It is directed at liquid crystal display；Imaging CCD is linked together by the optical interface that the emergent pupil end of rigid pipe endoscope carries；
Step 2, control liquid crystal display generate vertical bright line, and control the vertical bright line from the side of liquid crystal display
Opposite side is moved to speed V；
Step 3, while liquid crystal display starts to generate vertical bright line, control imaging CCD every time Δ t acquire one
The image at rigid pipe endoscope emergent pupil end described in frame, until the vertical bright line on liquid crystal display disappears, stopping acquires image；
The image that step 4, statistics imaging CCD are currently acquired includes the frame number n of vertical bright line image, thus obtains hard tube
Visual field width D=n × Δ t × V of the observable liquid crystal display of endoscope；
Step 5, control endoscope holding frame are along linear motor guide rail to the direction displacement distance H far from liquid crystal display；
Step 6 performs step 2 and step 3 again, and the image that then statistics imaging CCD is currently acquired includes vertical bright
The frame number n ' of line image, obtain rigid pipe endoscope currently observable liquid crystal display visual field width D '=n ' × Δ t ×
V；
Step 7, the field angle size θ that rigid pipe endoscope is obtained according to equation below：
Further, in the step 1, by rigid pipe endoscope along itself symmetry axis rotate 90 °, then perform step 2 to
Step 7, field angle size of the rigid pipe endoscope in vertical direction is obtained.
Preferably, in the step 4 or step 6, the image that statistics imaging CCD is currently acquired includes vertical bright line image
Frame number method be：Binary conversion treatment is carried out to the image collected first, the gray value of binary image jumps to 255 from 0
Image be include the image of vertical bright line, count the image of all gray values generations transition to get to comprising vertical
The frame number of bright line image.
Preferably, the liquid crystal display is full of the entire visual field of the rigid pipe endoscope.
The present invention has the advantages that：
The rigid pipe endoscope field angle detection method of the present invention replaces fixed target using liquid crystal display, does not need to be interior
Sight glass justifies visual field bornb sight fixed area, omits alignment link, does not need to prepare multiple targets, can reduce answering for detection work
Miscellaneous degree；In liquid crystal screen display target, compared to the detection mode for the target that drafting is illuminated by light source, method of the invention is more
Add intelligence, meanwhile, obtained testing result also can be more accurate；In the range of operating distance, using linear motor by endoscope
Displacement distance H, and H is arbitrary value, and positioning is more accurate, thus can improve accuracy of detection.
Description of the drawings
Fig. 1 is the detecting system structure diagram of the present invention.
Wherein, 1- liquid crystal displays, 2- endoscope holding frames, 3- imaging CCD, 4- image processing modules, 5- linear motors
Guide rail, 6- liquid crystal display control modules.
Specific embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
The present invention provides a kind of for measuring the detection method of rigid pipe endoscope field angle, realize and rigid pipe endoscope is regarded
Thus the measurement of rink corner can evaluate endoscopic imaging quality and performance indicator as one of optical parameter.
The detection method of the present invention is based on detection device shown in FIG. 1, is controlled including liquid crystal display 1, liquid crystal display
Module 6, imaging CCD3, endoscope holding frame 2, linear motor guide rail 5 and its image processing module 4；It is liquid crystal display 1, interior
Sight glass holding frame 2 and imaging CCD3 are installed in linear motor guide rail 5；Tested rigid pipe endoscope is fixed on endoscope folder
It holds on frame 2, endoscope holding frame 2 can adjust endoscope height, ensure the liquid crystal display 1 of endoscope visual field alignment observation, and visual field
Middle liquid crystal display 1 is full of entire visual field, and field range can not be excessive, it is impossible to more than liquid crystal display boundary.In endoscope holding frame 2 ensures
Sight glass adjustment is no longer shaken after finishing, and avoids generating error.
The visual field alignment liquid crystal display of rigid pipe endoscope, the light that imaging CCD3 is carried by the emergent pupil end of rigid pipe endoscope
It learns interface to link together, the liquid crystal display screen image for observing the emergent pupil end of rigid pipe endoscope is acquired.Liquid crystal display
Screen control module 6 is for controlling liquid crystal display 1 to generate variable striped as target, and the sweep speed of controllable striped.Electricity
Dynamic linear motor control endoscope moves in linear motor guide rail 5, changes operating distance, is not required to adjust manually, positioning accuracy
Height reduces error.
Image processing module 4 shows image and is handled, obtain hard tube for receiving the image of imaging CCD3 acquisitions
The field angle size of endoscope.CCD3 acquisition endoscope emergent pupil images are imaged, is shown on the screen of image processing module, is convenient for
Observation, and by processing image, obtain the optical parameter to be measured.
Liquid crystal display 1 generates line scan, and parameters are it is known that for example liquid crystal display control module 6 controls liquid
Crystal display screen 1 generates vertical bright line, and the vertical bright line scans (be moved to opposite side from 1 side of liquid crystal display) on the screen
Speed is V, and the size of V can need to be adjusted according to detection.Be imaged CCD3 acquisition endoscope view field image, vertical bright line regarding
Occur in, cause grey scale change in imaging CCD3 acquisition images.Imaging CCD3 acquires the image in the change procedure, each frame
Image spacing time control is Δ t；For the image that imaging CCD3 is currently acquired, binaryzation is carried out to the image collected first
Processing, it is the image that includes vertical bright line that the gray value of binary image jumps to 255 image from 0, counts all gray scales
The image of the transition occurs for value to get to the frame number n comprising vertical bright line image, and vertical bright line appears in the time in visual field
For T=n × Δ t, then visual field is D=T × V on the observable liquid crystal display of endoscope.
Endoscope is variable apart from 1 operating distance of liquid crystal display in the device.Electric linear motor control endoscope is separate
The direction displacement distance H of liquid crystal display 1, according to the method described above duplicate measurements, statistics are imaged in the image that CCD3 is currently acquired
Include the frame number n ' of vertical bright line image, the observation visual field width then obtained after rigid pipe endoscope movement H is D '=n ' × Δ t
× V, then rigid pipe endoscope field angle be
Rigid pipe endoscope is rotated by 90 °, the method duplicate measurements more than, obtains measuring vertical direction visual field width, most
The field angle of rigid pipe endoscope vertical direction is obtained eventually, available for further evaluating the optical property of rigid pipe endoscope.
Endoscope holding frame 2 can omit in the device, and endoscope is made to be fixedly connected with imaging CCD3, for installing in fixed
Sight glass.
In conclusion the foregoing is merely a prefered embodiment of the invention, it is not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (4)
1. a kind of detection method for rigid pipe endoscope field angle, which is characterized in that include the following steps：
Step 1 builds field angle detecting system：Liquid crystal display (1), endoscope holding frame (2) and imaging CCD (3) are pacified
In linear motor guide rail (5)；Tested rigid pipe endoscope is fixed on the endoscope holding frame (2), makes hard tube
The visual field alignment liquid crystal display (1) of endoscope；Imaging CCD (3) is connect by the optics that the emergent pupil end of rigid pipe endoscope carries
Mouth links together；
Step 2, control liquid crystal display (1) generate vertical bright line, and control the vertical bright line from the one of liquid crystal display (1)
Side is moved to opposite side with speed V；
Step 3, while liquid crystal display (1) starts to generate vertical bright line, control imaging CCD (3) every time Δ t acquire
The image at rigid pipe endoscope emergent pupil end described in one frame, until the vertical bright line on liquid crystal display (1) disappears, stopping acquisition being schemed
Picture；
The image that step 4, statistics imaging CCD (3) are currently acquired includes the frame number n of vertical bright line image, thus obtains hard tube
Visual field width D=n × Δ t × V of the observable liquid crystal display of endoscope (1)；
Step 5, control endoscope holding frame (2) along linear motor guide rail (5) to far from liquid crystal display (1) direction movement away from
From H；
Step 6 performs step 2 and step 3 again, and the image that then statistics imaging CCD (3) is currently acquired includes vertical bright line
The frame number n ' of image, obtain rigid pipe endoscope currently observable liquid crystal display (1) visual field width D '=n ' × Δ t ×
V；
Step 7, the field angle size θ that rigid pipe endoscope is obtained according to equation below：
2. a kind of detection method for rigid pipe endoscope field angle as described in claim 1, which is characterized in that in the step
In rapid 1, rigid pipe endoscope is rotated 90 °, then perform step 2 to step 7 along itself symmetry axis, obtains rigid pipe endoscope vertical
The field angle size in direction.
A kind of 3. detection method for rigid pipe endoscope field angle as claimed in claim 2, which is characterized in that the step
4 or step 6 in, the frame number method that statistics imaging CCD (3) image for currently acquiring includes vertical bright line image is：It is right first
The image collected carries out binary conversion treatment, and it is comprising vertical bright that the gray value of binary image jumps to 255 image from 0
The image of line counts all gray values and the image of the transition occurs to get to the frame number for including vertical bright line image.
A kind of 4. detection method for rigid pipe endoscope field angle as claimed in claim 2, which is characterized in that the liquid crystal
Entire visual field of the display screen (1) full of the rigid pipe endoscope.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918098A (en) * | 2018-08-24 | 2018-11-30 | 天津市医疗器械质量监督检验中心 | The test method of entrance pupil field angle under a kind of medical endoscope rectangular field |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478413B (en) * | 2017-08-23 | 2019-12-10 | 信利光电股份有限公司 | lens field angle testing device |
| CN109106320A (en) * | 2018-08-08 | 2019-01-01 | 江苏华亘泰来生物科技有限公司 | A kind of capsule endoscope field angle detection fixture |
| CN111982468B (en) * | 2020-07-29 | 2022-12-09 | 深圳惠牛科技有限公司 | Method, device and system for measuring field angle and computer storage medium |
| CN112179629B (en) * | 2020-09-29 | 2021-07-09 | 北京理工大学 | Method for measuring virtual scene field angle of virtual display equipment |
| CN114061918B (en) * | 2022-01-17 | 2022-03-22 | 极限人工智能有限公司 | Endoscope testing method and system |
| CN115281579B (en) * | 2022-06-17 | 2023-04-11 | 中山市微视医用科技有限公司 | Multifunctional test system for endoscope and use method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005114519A (en) * | 2003-10-07 | 2005-04-28 | Seiko Epson Corp | Inspection device for electro-optical panel, method for manufacturing electro-optical panel, method for determining visual field angle characteristics, and assembling deviation determination method |
| CN201005666Y (en) * | 2007-01-05 | 2008-01-16 | 湖北华中光电科技有限公司 | Medical rod-len endoscope detecting instrument |
| CN202801542U (en) * | 2012-08-28 | 2013-03-20 | 中国人民解放军第三0五医院 | Detecting device for quality performance of medical endoscope |
| CN103217273A (en) * | 2013-03-25 | 2013-07-24 | 上海理工大学 | Multifocal lens diopter detection system and detection method thereof |
| CN104236515A (en) * | 2014-09-11 | 2014-12-24 | 山东省计量科学研究院 | Field angle automatic measuring device for medical electronic endoscope |
| CN204115707U (en) * | 2014-09-11 | 2015-01-21 | 山东省计量科学研究院 | Medical electronic endoscope field angle self-operated measuring unit |
-
2015
- 2015-03-24 CN CN201510130028.1A patent/CN106017867B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005114519A (en) * | 2003-10-07 | 2005-04-28 | Seiko Epson Corp | Inspection device for electro-optical panel, method for manufacturing electro-optical panel, method for determining visual field angle characteristics, and assembling deviation determination method |
| CN201005666Y (en) * | 2007-01-05 | 2008-01-16 | 湖北华中光电科技有限公司 | Medical rod-len endoscope detecting instrument |
| CN202801542U (en) * | 2012-08-28 | 2013-03-20 | 中国人民解放军第三0五医院 | Detecting device for quality performance of medical endoscope |
| CN103217273A (en) * | 2013-03-25 | 2013-07-24 | 上海理工大学 | Multifocal lens diopter detection system and detection method thereof |
| CN104236515A (en) * | 2014-09-11 | 2014-12-24 | 山东省计量科学研究院 | Field angle automatic measuring device for medical electronic endoscope |
| CN204115707U (en) * | 2014-09-11 | 2015-01-21 | 山东省计量科学研究院 | Medical electronic endoscope field angle self-operated measuring unit |
Non-Patent Citations (2)
| Title |
|---|
| 医用硬性内窥镜光学性能质控检测技术研究;蒋昌松 等;《中国测试》;20130331;第39卷(第2期);第24-26、37页 * |
| 医用硬性内窥镜光效性能的弦线检测方法;杨冬 等;《光学精密工程》;20140331;第22卷(第3期);第576-581页 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918098A (en) * | 2018-08-24 | 2018-11-30 | 天津市医疗器械质量监督检验中心 | The test method of entrance pupil field angle under a kind of medical endoscope rectangular field |
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Denomination of invention: A method for measuring the field of view angle of rigid tube endoscope Effective date of registration: 20200923 Granted publication date: 20180706 Pledgee: Liu Liang Pledgor: WTI (Beijing) Asia-Pacific Photoelectric Instrument Co.,Ltd. Registration number: Y2020990001157 |