CN104076039A - Automatic detection method for appearance defects of optical filters - Google Patents
Automatic detection method for appearance defects of optical filters Download PDFInfo
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- CN104076039A CN104076039A CN201410119864.5A CN201410119864A CN104076039A CN 104076039 A CN104076039 A CN 104076039A CN 201410119864 A CN201410119864 A CN 201410119864A CN 104076039 A CN104076039 A CN 104076039A
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- optical filter
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- open defect
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Abstract
The invention discloses an automatic detection method for appearance defects of optical filters. The automatic detection method comprises the following steps: A, setting detection parameters for appearance defects of the optical filters; B, selecting a detection range of an optical lens; C, detecting through a low-power lens, marking the optical filter which is obviously unqualified, and storing the detection result; D, detecting through a high-power lens, and storing the detection result of the surplus optical filters; E, classifying and marking the surplus optical filters according to the detection result, and generating a corresponding graph (i.e. a map); F, automatically classifying and sorting the optical filters according to the map. According to the automatic detection method for the appearance defects of the optical filters, different appearance defects of the optical filters can be automatically detected by setting a uniform standard, the optical filters can be sorted through the map generated according to the detection result, so that not only can the detection efficiency and production efficiency be greatly improved, but also the manmade detection error can be avoided, the detection accuracy can be improved, and the stability and consistency of the quality of the optical filters can be guaranteed.
Description
Technical field
The present invention relates to the open defect detection method in a kind of optical device production run, especially relate to a kind of optical filter open defect automatic testing method.
Background technology
Optical filter is the important component part of contemporary optics device, by plating multilayer film at substrate material surface, utilize interference of light effect to change transmitted light or catoptrical polarization, phase place and energy, improving optical device function, the aspects such as the coupling efficiency of improvement optical link play a part very crucial, are widely used in optical communication network.Along with the development of telecommunication and wavelength-division multiplex technique, optical communication technique is had higher requirement to the design and processes of optical filter, and the quality quality of optical filter product just becomes particularly important.
In optical filter production run, can produce cut, collapse limit, the various appearances defect such as become mildewed, at present mostly domestic manufacturer is by the method for Manual Visual Inspection under the microscope, above-mentioned open defect to be detected, the problem existing is like this: 1) product of human eye one-time detection, because the more detection efficiency that causes of open defect classification is low, and easily produce the reaction such as tired and bring unnecessary error; 2) each operative employee causes the control degree varies of standard in the time detecting, and factor and individual subjective factor impact is larger, can cause a collection of product quality uneven; 3) some be difficult for by human eye detection to open defect can not be found in time, all bring unnecessary loss to the producer and user; 4) the optical filter product after having detected is manual sorting, and efficiency is lower.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of optical filter open defect automatic testing method.
Comprise following steps according to a kind of optical filter open defect automatic testing method provided by the invention:
A. set the detected parameters of optical filter open defect;
B. selected optical lens sensing range;
C. low power lens detects, and marks obvious underproof optical filter and stores testing result;
D. high power lens detects, and stores the testing result of residue optical filter;
E. according to testing result, described residue optical filter is carried out to key words sorting, and generate corresponding collection of illustrative plates (being MAP figure);
F. according to MAP figure, optical filter is carried out to automatic clustering sorting.
Preferably, the described detected parameters in described steps A comprises clear field, pit, collapses limit, dirty, gray scale, bright spot, idea closeness, cut.
Preferably, the sensing range of the described optical lens in described step B is the minimum rectangle scope that comprises all described optical filters to be checked.
Further, described step C comprises: by selecting and controlling described low power lens and move, successively all described optical filters to be checked are detected, mark obvious underproof optical filter and store testing result according to testing result.
Preferably, described step C comprises: clear field, bright spot and dim spot to all described optical filters to be checked detect.
Further, described step D comprises: automatically get rid of the obvious underproof optical filter marking in described step C, described low power lens is switched to described high power lens, control described high power lens and move, successively the remaining described optical filter to be checked except described obvious underproof optical filter is detected.
Compared with background technology, the invention has the beneficial effects as follows:
1, can realize the automatic detection to optical filter various appearances defect, greatly improve detection efficiency, avoid artificially detecting error, improve accuracy in detection.
2, go to detect the open defect of optical filter from the angle of machine vision according to unified standard, ensured stability and the unitarity of optical filter quality.
3, after the detection of optical filter is completed, generate corresponding MAP figure, and carry out automatic clustering sorting according to MAP figure, greatly enhance productivity.
Brief description of the drawings
By the description to the embodiment of the present invention referring to accompanying drawing, above-mentioned and other objects, features and advantages of the present invention will be more clear, in the accompanying drawings:
Fig. 1 is the schematic diagram according to a kind of optical filter open defect detection system of one embodiment of the invention.
Fig. 2 is the overhaul flow chart according to a kind of optical filter open defect automatic testing method of one embodiment of the invention.
Fig. 3 is the collection of illustrative plates obtaining according to a kind of optical filter open defect automatic testing method of one embodiment of the invention.
In figure, 1 is that computing machine, 2 is that optical lens, 31 and 32 is that vacuum controller, 5 is that stepper motor, 6 is absorption swing arm for detecting clamping fixture table, 4.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.Although the present invention is described in conjunction with following preferred embodiment, the present invention is not restricted to these embodiment.In below details of the present invention being described, detailed some specific detail sections of having described.Do not have for a person skilled in the art the description of these detail sections can understand the present invention completely yet.
In addition, it should be understood by one skilled in the art that the accompanying drawing providing at this is all for illustrative purposes, and accompanying drawing not necessarily in proportion draw.
Unless context explicitly calls for, otherwise the implication that " comprising ", " comprising " etc. in whole instructions and claims, similar word should be interpreted as comprising instead of exclusive or exhaustive implication; That is to say, be the implication of " including but not limited to ".
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Fig. 1 is the schematic diagram according to a kind of optical filter open defect detection system of one embodiment of the invention, and native system comprises computing machine 1, optical lens 2, detection clamping fixture table 3, vacuum controller 4, stepper motor 5 and absorption swing arm 6.Described optical lens 2 and described vacuum controller 4 are controlled by described computing machine 1 respectively.Described stepper motor 5 is controlled by described vacuum controller 4.
Fig. 2 is that its step comprising is according to the overhaul flow chart of a kind of optical filter open defect automatic testing method of one embodiment of the invention:
A. set the detected parameters of optical filter open defect;
B. the sensing range of selected optical lens;
C. low power lens detects, and marks obvious underproof optical filter and stores testing result;
D. high power lens detects, and stores the testing result of residue optical filter;
E. carry out key words sorting according to testing result, and generate corresponding collection of illustrative plates (being MAP figure);
F. according to MAP figure, optical filter is carried out to automatic clustering sorting.
Below in conjunction with the described optical filter open defect detection system shown in Fig. 1, the optical filter open defect automatic testing method shown in Fig. 2 is described in detail.
Particularly, steps A comprises: the position of adjusting described detection clamping fixture table 31, optical filter product to be checked is placed on described detection clamping fixture table 31, start the detection software in described computing machine 1, set the detected parameters of optical filter open defect, described detected parameters specifically can comprise clear field, pit, collapses limit, dirty, gray scale, bright spot, dim spot, idea closeness, cut etc.
Step B comprises: control and adjust the position of described optical lens 2 and/or described detection clamping fixture table 31, the sensing range that makes described optical lens 2 is the minimum rectangle scope that comprises all optical filter products described to be checked.
Step C comprises: selecting the camera lens of described optical lens 2 by described computing machine 1 is low power lens, control described low power lens moves simultaneously, successively all described optical filters to be checked are detected, in this step, described detected parameters can have multiple choices, for example can comprise clear field, bright spot and dim spot, mark obvious underproof optical filter (being for example labeled as G) according to testing result, and testing result is stored in described computing machine 1; The information of described testing result can comprise position, mark, detected parameters of described obvious underproof optical filter etc.Certainly, those of ordinary skill in the art are known, according to different production object and testing requirement, can use low power lens to detect other parameter of all described optical filters to be checked, give an example no longer one by one at this.
Step D comprises: automatically get rid of the obvious underproof optical filter marking in described step C, by described computing machine 1, the camera lens of described optical lens 2 is switched to high power lens by described low power lens, control described high power lens simultaneously and move, successively the remaining described optical filter to be checked except described obvious underproof optical filter is detected; In this step, can be according to different production object and testing requirements, in all the other detected parameters from the detected parameters of having selected except step C, select, for example from pit, collapse the parameters such as limit, dirty, gray scale, idea closeness, cut and select one or more parameters, described residue optical filter to be checked is detected, and testing result is stored in described computing machine 1.
Step e comprises: according to testing result, production object, testing requirement etc., in described computing machine 1, remaining described optical filter is carried out to key words sorting, and generate MAP figure.As shown in Figure 3, for the MAP figure obtaining according to a kind of optical filter open defect automatic testing method of one embodiment of the invention, in figure, the position of each letter is corresponding one by one with the optical filter position on detection clamping fixture table 31, A-G has represented respectively the optical filter of different qualities, if A is certified products, B is dirty faulty goods, and C is for collapsing limit faulty goods, D is the too much faulty goods of bright spot, E is the faulty goods that becomes mildewed, and F is scratch defects product, and G is unacceptable product.Or also can give respectively other different implication to A-G according to different customer requirements, be intended to the difference of being classified of optical filter product, so that subsequent sort.
Step F comprises: by the optical filter detecting according to identical with optical filter in steps A towards being placed on described detection clamping fixture table 32, described computing machine 1 sends sorting instruction to described vacuum controller 4, and described vacuum controller 4 is controlled described stepper motor 5 and driven described absorption swing arm 6 that optical filter is detected according to MAP figure classification.
It should be noted that, at least two cover control programs can be set in described computing machine 1, comprise Automatic Control program and semi-automatic program, while selecting described Automatic Control program, only described optical filter need to be placed on described detection clamping fixture table, all the other operations (comprising that described detection clamping fixture table adjustment, described optical lens adjustment, described optical lens switch etc.) are controlled by described computing machine 1, and described detected parameters is fixing set of parameter; While selecting described semiautomatic control program, can make some step in detection method into manual operation as required, setting of for example described detection clamping fixture table adjustment, described optical lens adjustment, the switching of described optical lens, described detected parameters etc.
Hence one can see that, according to optical filter open defect automatic testing method provided by the invention, can be by setting unified standard, realize the automatic detection to optical filter various appearances defect, and according to testing result generation MAP figure, optical filter is sorted, not only can greatly improve detection efficiency and production efficiency; Can also avoid artificially detecting error, improve accuracy in detection, ensure stability and the unitarity of optical filter quality.
Above-mentioned embodiment is used for the present invention that explains, instead of limits the invention, and in the protection domain of spirit of the present invention and claim, any amendment and change that the present invention is made, all fall into protection scope of the present invention.
Claims (6)
1. an optical filter open defect automatic testing method, is characterized in that, comprises the following steps:
A. set the detected parameters of optical filter open defect;
B. selected optical lens sensing range;
C. low power lens detects, and marks obvious underproof optical filter and stores testing result;
D. high power lens detects, and stores the testing result of residue optical filter;
E. according to testing result, described residue optical filter is carried out to key words sorting, and generate corresponding collection of illustrative plates;
F. according to collection of illustrative plates, optical filter is carried out to automatic clustering sorting.
2. a kind of optical filter open defect automatic testing method according to claim 1, is characterized in that, the described detected parameters in described steps A comprises clear field, pit, collapses limit, dirty, gray scale, bright spot, idea closeness, cut.
3. a kind of optical filter open defect automatic testing method according to claim 1, is characterized in that, the sensing range of the described optical lens in described step B is the minimum rectangle scope that comprises all described optical filters to be checked.
4. a kind of optical filter open defect automatic testing method according to claim 1, it is characterized in that, described step C comprises: by selecting and controlling described low power lens and move, successively all described optical filters to be checked are detected, mark obvious underproof optical filter and store testing result according to testing result.
5. a kind of optical filter open defect automatic testing method according to claim 4, is characterized in that, described step C comprises: clear field, bright spot and dim spot to all described optical filters to be checked detect.
6. a kind of optical filter open defect automatic testing method according to claim 1, it is characterized in that, described step D comprises: automatically get rid of the obvious underproof optical filter marking in described step C, described low power lens is switched to described high power lens, control described high power lens and move, successively the remaining described optical filter to be checked except described obvious underproof optical filter is detected.
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| CN104923494A (en) * | 2015-06-30 | 2015-09-23 | 歌尔声学股份有限公司 | Method and system for automatically distinguishing qualified products from electronic components on large scale |
| CN105571824A (en) * | 2014-10-13 | 2016-05-11 | 南昌欧菲光电技术有限公司 | Optical filter testing method and optical filter testing device |
| CN105911062A (en) * | 2015-02-25 | 2016-08-31 | 东友精细化工有限公司 | Apparatus and method for detecting defect of optical film |
| CN107607550A (en) * | 2017-10-27 | 2018-01-19 | 宁波舜宇仪器有限公司 | Defect detection unit and detection device the defects of containing the unit |
| CN107643296A (en) * | 2017-07-21 | 2018-01-30 | 易思维（天津）科技有限公司 | Defect detection method and device for laser welding protective lens on automobile production line |
| CN109374256A (en) * | 2018-11-14 | 2019-02-22 | 凌云光技术集团有限责任公司 | A kind of industrial detection adaptive classification method and device |
| CN110542687A (en) * | 2019-07-02 | 2019-12-06 | 中国工程物理研究院激光聚变研究中心 | Detection device and detection method for appearance defects of microscopic elements |
| CN111079831A (en) * | 2019-12-13 | 2020-04-28 | 智泰科技股份有限公司 | Intelligent optical detection sample characteristic and flaw automatic marking method and device |
| CN112730452A (en) * | 2020-12-22 | 2021-04-30 | 苏州京浜光电科技股份有限公司 | Method for detecting surface defects of optical filter |
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| CN110542687A (en) * | 2019-07-02 | 2019-12-06 | 中国工程物理研究院激光聚变研究中心 | Detection device and detection method for appearance defects of microscopic elements |
| CN111079831A (en) * | 2019-12-13 | 2020-04-28 | 智泰科技股份有限公司 | Intelligent optical detection sample characteristic and flaw automatic marking method and device |
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