CN204924983U - Lens defect automatic checkout device of grating modulation - Google Patents
Lens defect automatic checkout device of grating modulation Download PDFInfo
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- CN204924983U CN204924983U CN201520523630.7U CN201520523630U CN204924983U CN 204924983 U CN204924983 U CN 204924983U CN 201520523630 U CN201520523630 U CN 201520523630U CN 204924983 U CN204924983 U CN 204924983U
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Abstract
The utility model discloses a lens defect automatic checkout device of grating modulation, establish in camera bellows (13) lining including keeping apart detecting system, motion control system and light source system, isolation detecting system, motion control system establishes in the bottom of camera bellows (13), and motion control system establishes in one side of camera bellows (13), its characterized in that: grating (6) be fixed in sharp lead screw guide rail (5) on, plane backlight (10) parallel is fixed in by object plate (4) below and is connected with light source controller (11), main control unit (12) are controlled the motion control system through motion control card (9) realization. The device carries out twice sampling through the method that removes the grating position to the lens image, through gray value to in the ming dynasty, the details in a play not acted out on stage, but told through dialogues image and form feature analysis, realizes classification, location and measurement to the lens defect, very big improvement lens test's rate of accuracy and efficiency.
Description
Technical field
The utility model relates to a kind of eyeglass defect automatic detection device and method of Grating Modulation, refers to especially and adopts grating pair planar backlight source to modulate, and utilizes machine vision technique the defect of lens surface to be carried out to the method and apparatus automatically detected.
Background technology
Eyeglass flaw inspection is not only and is ensured to dispatch from the factory the important step of Lens pass rate, is also the effective ways of monitoring industrial processes.At present, eyeglass flaw inspection still all adopts the mode of manual detection to complete, and manual detection depends on experience and the technology of testing staff to a great extent, and is subject to the impact of the factor such as subjective factor, individual difference, and false drop rate is higher.The patent No. be 201210180997.4 utility model patent propose a kind of method utilizing machine vision to detect lens defects fast, but the method really cannot divide lens surface defect type; Number of patent application be 201310086231.4 utility model patent disclose a kind of eyeglass flaw inspection system, propose employing three Machine Vision Detection stations just to detect eyeglass defect, but concrete Testing index involved by not mentioned each detection station and method; The patent No. be 201310543428.6 and 201310543198.3 utility model patent adopt machine vision method realize lens is shown that defect detects automatically, the method all adopts low angle ring light as light source, on the one hand, ring light can cause eyeglass inside and outside circle light intensity uneven, even produce aperture, and for different types of eyeglass, as near-sighted glasses, presbyopic glasses, farsighted glasses, astigmatoscope etc., due to lens index and the surface curvature property of there are differences, the consistance of successive image Processing Algorithm must be affected; On the other hand, this polishing mode requires that light source and eyeglass must be in same plane, is unfavorable for the clamping of eyeglass and fixes, affecting the real-time online detection efficiency of eyeglass.
Summary of the invention
For the deficiency that manual detection and existing research exist, the purpose of this utility model is to provide a kind of defect device for fast detecting being applicable to variety classes eyeglass, for improving Detection accuracy and efficiency, for eyeglass on-line checkingi provides basis.
The technical solution of the utility model is achieved in the following ways: a kind of eyeglass defect automatic detection device of Grating Modulation, comprise isolation detection system, kinetic control system and light-source system, isolation detection system is located in camera bellows, kinetic control system is located at the bottom of camera bellows, kinetic control system is located at the side of camera bellows, described isolation detection system is by image collecting device, camera fixed mount, eyeglass fixed mount, by object plate, grating forms, image acquiring device is arranged vertically within by above object plate by camera fixed mount, parallel gratings is installed on camera and by between object plate, described kinetic control system is made up of straight line lead screw guide rails, stepper motor, motor driver and motion control card, for the position of high-precision moving grating, light-source system is made up of planar backlight source and light source controller, it is characterized in that: described grating is fixed in straight line lead screw guide rails, planar backlight source is parallel to be fixed on and to be connected with light source controller below object plate, and master controller realizes controlling kinetic control system by motion control card.
Described camera fixed mount is used for the physical location of each hardware in fixed inspection system; Described camera bellows is used for isolation detection system and ambient light photograph, and system is in stable testing environment.
Described image acquiring device is for obtaining by the realtime graphic of object plate, and its visual field is greater than tested optic diameter and pixel resolution meets the identification requirement of defect minimum dimension.
Described described grating is for modulating imaging source, and its overall dimensions must be greater than by the maximum gauge of object plate, and the black and white strip size of space is depending on the imaging size of maximum point defect.
Described planar backlight source and light source controller are for providing the light source of vision detection system, described planar backlight source is made up of light emitting diode and high scattering diffusing panel, conforming photoenvironment is provided, its size is determined by by the full-size of object plate, described light source controller for providing stable light source power supply voltage, and regulates light-source brightness.
Described master controller is used for processing in real time the image captured by described vision acquisition device, obtains the kind of defect, position and size information.
The utility model has the following advantages:
(1) adopt machine vision technique to carry out automatically detecting fast, locating and classification to eyeglass defect, effectively can improve the efficiency of eyeglass Quality Detection;
(2) adopt planar base backlight to provide high evenness photoenvironment, and modulate in conjunction with grating pair backlight, build bright, inner room every visual field, in defect, part defect has astigmatism, under details in a play not acted out on stage, but told through dialogues background, have shinny feature; In defect, part defect has resistance photosensitiveness, has obfuscation feature under light field background, and this polishing mode effectively can adapt to the detection of different classes of eyeglass;
(3) combined with image acquisition by the motion of straight line lead screw guide rails slide unit, gather two width lens image, can, darkfield image bright to eyeglass splice based on image isotonicity principle, the panoramic picture of acquisition eyeglass under bright, details in a play not acted out on stage, but told through dialogues;
(4) bright, darkfield image are processed, synchronous detection can be realized to the defect with resistance light and astigmatism characteristic, realize automatic identification to eyeglass defect and classification in conjunction with half-tone information and shape information.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the topology view of the utility model pick-up unit;
Fig. 2 is the utility model overhaul flow chart;
Fig. 3 is defect shooting effect figure.
In figure: 1 image collecting device; 2 camera fixed mounts; 3 eyeglass fixed mounts; 4 by object plate; 5 straight line lead screw guide rails; 6 gratings; 7 stepper motors; 8 motor drivers; 9 motion control cards; 10 planar backlight sources; 11 light source controllers; 12 master controllers; 13 camera bellows.
Embodiment
The utility model detailed technology scheme is introduced: as shown in Figure 1 below in conjunction with accompanying drawing, a kind of eyeglass defect automatic detection device of Grating Modulation, comprise image collecting device 1, camera fixed mount 2, eyeglass fixed mount 3, by object plate 4, straight line lead screw guide rails 5, grating 6, stepper motor 7, motor driver 8, motion control card 9, planar backlight source 10, light source controller 11, master controller 12, camera bellows 13 and image acquisition, image collecting device 1 is vertically fixed on device top by camera fixed mount 2, and be connected with master controller 12 by USB3.0 interface, image collecting device 1 with by object plate 4, the center line in the peaceful slick and sly source 10 of grating 6 is on same vertical plane, be fixed between image collecting device 1 and grating 6 by object plate 4 by eyeglass fixed mount 5 is parallel, grating 6 is parallel to be fixed in straight line lead screw guide rails 5, its position is by between object plate 4 and planar backlight source 10, with stepper motor 7 for gearing, be connected with master controller 12 with motion control card 9 by motor driver 8, realize the function of image light and shade field reverse shot, planar backlight source 10 is fixed on device bottom, and regulates its intensity of illumination by light source controller 11.
As shown in Figure 2, be the utility model testing process, its concrete implementation step is as follows:
1, detection station is fixed to by object plate 4;
2, image collecting device 1 controls acquisition first width lens image by master controller 12;
3, master controller 12 controls straight line lead screw guide rails 5 by motion control card 9 and drives grating 6 to move the black and white strip size of space;
4, image collecting device 1 obtains the second width lens image by master controller 12;
5, bright, the details in a play not acted out on stage, but told through dialogues region in two width images is extracted respectively by Threshold segmentation mode, and according to image isotonicity principle by image mosaic Cheng Ming, darkfield image;
6, extracted the high gray-scale value region in darkfield image by Threshold segmentation mode, extract the low gray areas in bright field image, and be connected by neighborhood point and repair defect region with Morphological scale-space method;
7, the comprehensively gray-scale value of defect and morphological feature in bright, dark image, comprehensively analyzes defect type, position and size, judges by object plate grade.
As shown in Figure 3, be defect shooting effect figure.
Claims (6)
1. the eyeglass defect automatic detection device of a Grating Modulation, comprise isolation detection system, kinetic control system and light-source system, it is inner that isolation detection system is located at camera bellows (13), kinetic control system is located at the bottom of camera bellows (13), kinetic control system is located at the side of camera bellows (13), described isolation detection system is by image collecting device (1), camera fixed mount (2), eyeglass fixed mount (3), by object plate (4), grating (6) forms, image acquiring device (1) is arranged vertically within by object plate (4) top by camera fixed mount (2), grating (6) is parallel is installed on camera and by between object plate (4), described kinetic control system is made up of, for the position of high-precision moving grating (6) straight line lead screw guide rails (5), stepper motor (7), motor driver (8) and motion control card (9), light-source system is made up of planar backlight source (10) and light source controller (11), it is characterized in that: described grating (6) is fixed in straight line lead screw guide rails (5), planar backlight source (10) is parallel to be fixed on by object plate (4) below and to be connected with light source controller (11), and master controller (12) realizes controlling kinetic control system by motion control card (9).
2. the eyeglass defect automatic detection device of a kind of Grating Modulation according to claim 1, is characterized in that: described camera fixed mount (2) is for the physical location of hardware each in fixed inspection system; Described camera bellows (13), for isolation detection system and ambient light photograph, makes system be in stable testing environment.
3. the eyeglass defect automatic detection device of a kind of Grating Modulation according to claim 1, it is characterized in that: described image acquiring device (1) is for obtaining by the realtime graphic of object plate (4), and its visual field is greater than by object plate (4) diameter and pixel resolution meets the identification requirement of defect minimum dimension.
4. the eyeglass defect automatic detection device of a kind of Grating Modulation according to claim 1, it is characterized in that: described described grating (6) is for modulating imaging source, its overall dimensions must be greater than by the maximum gauge of object plate (4), and the black and white strip size of space is depending on the imaging size of maximum point defect.
5. the eyeglass defect automatic detection device of a kind of Grating Modulation according to claim 1, it is characterized in that: described planar backlight source (10) and light source controller (11) are for providing the light source of vision detection system, described planar backlight source (10) is made up of light emitting diode and high scattering diffusing panel, conforming photoenvironment is provided, its size is determined by by the full-size of object plate (4), described light source controller (11) for providing stable light source power supply voltage, and regulates light-source brightness.
6. the eyeglass defect automatic detection device of a kind of Grating Modulation according to claim 1, it is characterized in that: described master controller (12), for processing in real time the image captured by vision acquisition device, obtains the kind of defect, position and size information.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520523630.7U CN204924983U (en) | 2015-07-20 | 2015-07-20 | Lens defect automatic checkout device of grating modulation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520523630.7U CN204924983U (en) | 2015-07-20 | 2015-07-20 | Lens defect automatic checkout device of grating modulation |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067639A (en) * | 2015-07-20 | 2015-11-18 | 丹阳市精通眼镜技术创新服务中心有限公司 | Device and method for automatically detecting lens defects through modulation by optical grating |
| CN105772951A (en) * | 2016-05-10 | 2016-07-20 | 付淑珍 | Full-automatic cutting and detecting equipment for surface mount technology (SMT) template |
| CN106353336A (en) * | 2016-10-27 | 2017-01-25 | 哈尔滨理工大学 | Lens coating automatic detection system |
| CN107064174A (en) * | 2017-02-14 | 2017-08-18 | 长沙麦斯森信息科技有限公司 | A kind of detecting system detected for glass surface defects |
| TWI601952B (en) * | 2016-01-25 | 2017-10-11 | Wafer edge measurement module (a) | |
| CN107782744A (en) * | 2016-08-31 | 2018-03-09 | 丹阳市延陵镇弘理眼镜厂 | A kind of eyeglass defect automatic detection device of Grating Modulation |
| CN108554842A (en) * | 2018-04-13 | 2018-09-21 | 上海工程技术大学 | A kind of automatic detection device for automobile rear view mirror lens |
| CN108918543A (en) * | 2018-05-14 | 2018-11-30 | 上海工程技术大学 | A kind of device for dynamically detecting and method of mirror surfaces scuffing |
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2015
- 2015-07-20 CN CN201520523630.7U patent/CN204924983U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067639A (en) * | 2015-07-20 | 2015-11-18 | 丹阳市精通眼镜技术创新服务中心有限公司 | Device and method for automatically detecting lens defects through modulation by optical grating |
| CN105067639B (en) * | 2015-07-20 | 2018-03-27 | 丹阳市精通眼镜技术创新服务中心有限公司 | The eyeglass defect automatic detection device and method of a kind of Grating Modulation |
| TWI601952B (en) * | 2016-01-25 | 2017-10-11 | Wafer edge measurement module (a) | |
| CN105772951A (en) * | 2016-05-10 | 2016-07-20 | 付淑珍 | Full-automatic cutting and detecting equipment for surface mount technology (SMT) template |
| CN107782744A (en) * | 2016-08-31 | 2018-03-09 | 丹阳市延陵镇弘理眼镜厂 | A kind of eyeglass defect automatic detection device of Grating Modulation |
| CN106353336A (en) * | 2016-10-27 | 2017-01-25 | 哈尔滨理工大学 | Lens coating automatic detection system |
| CN107064174A (en) * | 2017-02-14 | 2017-08-18 | 长沙麦斯森信息科技有限公司 | A kind of detecting system detected for glass surface defects |
| CN108554842A (en) * | 2018-04-13 | 2018-09-21 | 上海工程技术大学 | A kind of automatic detection device for automobile rear view mirror lens |
| CN108554842B (en) * | 2018-04-13 | 2019-11-15 | 上海工程技术大学 | A kind of automatic detection device for automobile rear view mirror lens |
| CN108918543A (en) * | 2018-05-14 | 2018-11-30 | 上海工程技术大学 | A kind of device for dynamically detecting and method of mirror surfaces scuffing |
| CN108918543B (en) * | 2018-05-14 | 2021-03-23 | 上海工程技术大学 | Dynamic detection device and method for mirror surface scratch |
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Granted publication date: 20151230 Termination date: 20190720 |
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| CF01 | Termination of patent right due to non-payment of annual fee |