CN105069390A - Bar code reader using planar light source for illumination - Google Patents
Bar code reader using planar light source for illumination Download PDFInfo
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- CN105069390A CN105069390A CN201510448017.8A CN201510448017A CN105069390A CN 105069390 A CN105069390 A CN 105069390A CN 201510448017 A CN201510448017 A CN 201510448017A CN 105069390 A CN105069390 A CN 105069390A
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Abstract
The invention relates to a bar code reader using a planar light source for illumination. The bar code reader comprises an imaging system and a light supplement system, the imaging system obtains an image to be read, the light supplement system supplements light to an image capture interval of the imaging system, and the optical axis of the imaging system is overlapped or parallel with that of the light supplement system, or an acute included angle is formed between the optical axes of the imaging system and the light supplement system. The light supplement system comprises the light source and a light uniformizing device which enables light of the light source to irradiate the image capture interval of the imaging system uniformly. The light uniformizing device enables light of the light source to irradiate the image capture interval of the imaging system uniformly, so that different areas of the image to be read in the image capture interval receive illumination of the similar intensity, the image to be read can be displayed more clearly, the contrast of the image is higher, it is ensured that an image reader can obtain information of higher quality, and convenience is provided for rapid decoding.
Description
Technical field
The present invention relates to a kind of bar code reading facility using planar light source to throw light on.
Background technology
Bar code is first proposed in 1949 by the N.T.Woodland of the U.S..Improving constantly with universal in recent years along with computer technology, the application of bar code obtains very large development.Generally, the daylight lamp intensity of illumination of natural light or indoor can not meet the requirement of imaging system 2 pairs of intensities of illumination of bar code reading facility, at this moment needs to consider that treating recognition bar code with extra light source carries out light filling.
As shown in Figure 4, Figure 5, current most products all adopts directly in the mode of imaging system 2 arranged alongside light source 31, for treating that recognition bar code carries out light filling.For this bar code reading facility, there will be the defects such as middle bright limb is dark when light compensating lamp light is radiated on bar code and cause showing unintelligible, contrast decline, interference being caused to the imaging effect of imaging system 2, not easily decodes.
Summary of the invention
The technical problem to be solved in the present invention is, provides the bar code reading facility that a kind of use planar light source of improvement throws light on.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of bar code reading facility using planar light source to throw light on, and comprises for obtaining the imaging system waiting to distinguish image and for the interval light-supplementing system carrying out light filling of capture for described imaging system;
The optical axis of described imaging system and the optical axis coincidence of described light-supplementing system or parallel or arrange in acute angle, described light-supplementing system comprises light source, dodging device for making the uniform light of described light source be irradiated to the capture interval of described imaging system.
Preferably, described dodging device comprises for making the uniform diffusing panel of the divergence of beam of described light source, described diffusing panel comprises two and relative enters light face and exiting surface, the light direction of described light source and the light face of entering of described diffusing panel are oppositely arranged, and described exiting surface is arranged towards the capture interval of described imaging system.
Preferably, at least one side entered in light face and exiting surface of described diffusing panel is provided with and can makes the uniform diffusing surface of the divergence of beam of described light source; And/or,
The inside of described diffusing panel is distributed with the particle of the light generation scattering that can make described light source.
Preferably, described light-supplementing system also comprises the lamp plate installed for described light source, and the opposing parallel interval, light face of entering of described lamp plate and described diffusing panel is arranged.
Preferably, the distance between described light source and described diffusing panel is adjustably arranged on described lamp plate.
Preferably, described light source comprises the pointolite entered on relative surface, light face being arranged on described lamp plate and described diffusing panel; Or,
Described light source comprises the multiple pointolites entered on relative surface, light face being distributed in described lamp plate and described diffusing panel.
Preferably, described pointolite comprises LED, and described LED comprises monochromatic burner; And/or,
Described LED comprises secondary color lamp; And/or,
Described LED comprises infrared lamp or the ultraviolet lamp of waiting to distinguish image for reading stealth.
Preferably, described light-supplementing system also comprises the brightness regulating apparatus for controlling described light-source brightness;
The gauge tap of time ratio that described brightness regulating apparatus comprises unlatching quantity for controlling described multiple pointolite or disconnects for the electric current that controls described pointolite or the unlatching for controlling described pointolite.
Preferably, described imaging system comprises an adjustable imaging system of imaging focal length; And/or,
Described imaging system comprises at least two different imaging systems of imaging focal length.
Preferably, described image recognition apparatus is the image recognition apparatus for identifying bar code or Quick Response Code or stealthy recognition image.
Implement the bar code reading facility of use planar light source of the present invention illumination, there is following beneficial effect: in the present invention, the uniform light sent of light source can be made to be irradiated to the capture interval of imaging system by dodging device, intensity of illumination that each region of image accepts is suitable to allow treating on capture interval distinguish, allow and treat that the display of recognition image is more clear, contrast is higher, ensure that image recognition device can obtain the image information waiting to distinguish image of better quality, be convenient to realize quick decoding.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of the bar code reading facility that the use planar light source in the embodiment of the present invention throws light on;
Fig. 2 is the schematic perspective view of image recognition device identification in time distinguishing image in Fig. 1;
Fig. 3 is the effect schematic diagram of the image to be identified that the image recognition device in Fig. 1 obtains;
Fig. 4 is the schematic perspective view of the image recognition device in background technology;
Fig. 5 is the effect schematic diagram of the image to be identified that the image recognition device in Fig. 4 obtains.
Embodiment
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
As shown in Figure 1 to Figure 3, the bar code reading facility of the use planar light source illumination in a preferred embodiment of the invention comprise for obtain wait to distinguish image 1 imaging system 2, for being the interval light-supplementing system 3 carrying out light filling of capture of imaging system 2 and the housing supported imaging system 2 and light-supplementing system 3.Treat that recognition image 1 is generally bar code or Quick Response Code, image recognition device is the image recognition device for identifying bar code or Quick Response Code.
Imaging system 2 comprises an adjustable imaging system 2 of imaging focal length; In other embodiments, imaging system 2 comprises different at least two imaging systems 2 of imaging focal length, in time distinguishing image 1 and be placed on diverse location, all can be imaged system 2 and obtain image information.Certainly, it is different that multiple imaging focal length also can be set, and the imaging system 2 that imaging focal length is adjustable.
Preferably, the optical axis of light-supplementing system 3 and the optical axis coincidence of imaging system 2, imaging system 2 is aimed at wait to distinguish the center that image 1 is also just positioned at light-supplementing system 3 overlay area in time distinguishing image 1, be convenient to obtain high-quality waiting and distinguish bar code image, certainly, when the overlay area of light-supplementing system 3 is larger, the optical axis of light-supplementing system 3 also can be parallel to each other with the optical axis of imaging system 2 or arrange in acute angle, treat on recognition image 1 so that the light of light-supplementing system 3 can be allowed to be irradiated to, make to treat that recognition image 1 can be imaged system 2 and obtain clearly.
Light-supplementing system 3 comprises light source 31, for the lamp plate 32 of light source 31 installation, the dodging device 33 for making the uniform light of light source 31 be irradiated to the capture interval of imaging system 2, dodging device 33 makes the light of light source 31 more even, thus make capture interval waits that the environmental light intensity distinguishing image 1 and periphery thereof is evenly distributed, allow to treat that recognition image 1 shows more clear, imaging system 2 will be caused can not to carry out reading code, decoding to image because of the uneven problem of light.
In certain embodiments, dodging device 33 comprises for making the uniform diffusing panel 331 of the divergence of beam of light source 31, diffusing panel 331 comprises two and relative enters light face 3311 and exiting surface 3312, and at least one side entered in light face 3311 and exiting surface 3312 of diffusing panel 331 being provided with and can making the uniform diffusing surface of the divergence of beam of light source 31.Certainly, the particle of the light generation scattering of light source also can be made in the distribution of the inside of diffusing panel 331; Also diffusing surface and diffusing particle can be arranged simultaneously.
The light direction of light source 31 and the light face 3311 of entering of diffusing panel 331 are oppositely arranged, and exiting surface 3312 is arranged towards the capture interval of imaging system 2, and the light of light source 31 is evenly dispersed after diffusing panel 331, makes exiting surface 3312 light out more even.
In certain embodiments, light source 31 comprises the pointolite entered on relative surface, light face 3311 being arranged on lamp plate 32 and diffusing panel 331; Light source 31 also can comprise the multiple pointolites be distributed on lamp plate 32 surface relative with diffusing panel 331.Pointolite is LED 311, and certainly, pointolite also can be incandescent lamp etc.When light source 31 only includes a pointolite, the light of LED also can realize uniform light and disperse after diffusing panel 331, allows the uniform light in capture interval of imaging system 2, is beneficial to recognition image decoding.When light source 31 comprises multiple pointolite, multiple LED 311 is arranged by the specific mode such as annular, matrix form, makes the luminescence of light source 31 more even.
Further, LED 311 comprises the monochromatic burners such as red, green, blue, LED 311 also can comprise the assorted secondary color lamp of white light, corresponding glow color is selected according to different environments for use, monochromatic burner and secondary color lamp also can be arranged simultaneously, control its on off state respectively, meet different environment for use demands.
In some special applications, treat that recognition image 1 also can be stealthy recognition image, corresponding, LED 311 also can comprise infrared lamp or the ultraviolet lamp of waiting to distinguish image 1 for reading stealth, and image recognition device then can be used for the image recognition device identifying stealthy recognition image.Certainly, infrared lamp or ultraviolet lamp also can combine with monochromatic burner, secondary color lamp etc. and arrange.
Preferably, the opposing parallel interval, light face 3311 of entering of lamp plate 32 and diffusing panel 331 is arranged, and to make the uniform light between light source 31 to diffusing panel 331 as far as possible, also can reduce taking up room between lamp plate 32 and diffusing panel 331.
Distance between light source 31 and diffusing panel 331 is adjustably arranged on lamp plate 32, such as, adjust the distance between light source 31 and diffusing panel 331 by the distance between adjustment lamp plate 32 and diffusing panel 331, or regulate the distance between light source 31 and diffusing panel 331 by the installation site of adjustment light source 31 on lamp plate 32.By regulating the distance between light source 31 and diffusing panel 331, light source 31 can be made to be irradiated to the light intensity of diffusing panel 331 suitable, and then the light intensity that light-supplementing system 3 is finally exported is suitable, makes light distribution more even.
Further, light-supplementing system 3 also comprises the brightness regulating apparatus for controlling light source 31 brightness; Brightness regulating apparatus comprises the gauge tap for controlling the unlatching quantity of multiple pointolite or the electric current for reference mark light source.By regulating the brightness of LED 311, suitable capture brightness can be met, the brightness of LED 311 can be dimmed when environmental light intensity, the brightness of LED 311 can be lightened when surround lighting is weak, make the light in capture process on imaging system 2 capture interval not affected by environment.In other embodiments, the time ratio that the unlatching that gauge tap also can be used for controlling described pointolite disconnects, by controlling the light luminance on time shutter adjustment imaging system 2 capture interval.
Understandably, above-mentioned each technical characteristic can combination in any use and unrestricted.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. the bar code reading facility using planar light source to throw light on, is characterized in that, comprises for obtaining the imaging system (2) waiting to distinguish image (1) and for the interval light-supplementing system (3) carrying out light filling of capture for described imaging system (2);
The optical axis of described imaging system (2) and the optical axis coincidence of described light-supplementing system (3) or parallel or arrange in acute angle, described light-supplementing system (3) comprises light source (31), dodging device (33) for making the uniform light of described light source (31) be irradiated to the capture interval of described imaging system (2).
2. the bar code reading facility of use planar light source illumination according to claim 1, is characterized in that,
Described dodging device (33) comprises the uniform diffusing panel of divergence of beam (331) for making described light source (31), described diffusing panel (331) comprises two and relative enters light face (3311) and exiting surface (3312), the light direction of described light source (31) and the light face (3311) of entering of described diffusing panel (331) are oppositely arranged, and described exiting surface (3312) is arranged towards the capture interval of described imaging system (2).
3. the bar code reading facility of use planar light source illumination according to claim 2, it is characterized in that, at least one side entered in light face (3311) and exiting surface (3312) of described diffusing panel (331) is provided with the uniform diffusing surface of divergence of beam that can make described light source (31); And/or,
The inside of described diffusing panel (331) is distributed with the particle of the light generation scattering that can make described light source.
4. the bar code reading facility of use planar light source illumination according to claim 2, it is characterized in that, described light-supplementing system (3) also comprises the lamp plate (32) installed for described light source (31), and light face (3311) the opposing parallel interval of entering of described lamp plate (32) and described diffusing panel (331) is arranged.
5. the bar code reading facility of use planar light source illumination according to claim 4, it is characterized in that, the distance between described light source (31) and described diffusing panel (331) is adjustably arranged on described lamp plate (32).
6. the bar code reading facility of use planar light source illumination according to claim 4, it is characterized in that, described light source (31) comprises the pointolite entered on relative surface, light face (3311) being arranged on described lamp plate (32) and described diffusing panel (331); Or,
Described light source (31) comprises the multiple pointolites entered on relative surface, light face (3311) being distributed in described lamp plate (32) and described diffusing panel (331).
7. the bar code reading facility of use planar light source illumination according to claim 6, it is characterized in that, described pointolite comprises LED (311), and described LED (311) comprises monochromatic burner; And/or,
Described LED (311) comprises secondary color lamp; And/or,
Described LED (311) comprises infrared lamp or the ultraviolet lamp of waiting to distinguish image (1) for reading stealth.
8. the bar code reading facility of the use planar light source illumination according to claim 6 or 7, it is characterized in that, described light-supplementing system (3) also comprises the brightness regulating apparatus for controlling described light source (31) brightness;
The gauge tap of time ratio that described brightness regulating apparatus comprises unlatching quantity for controlling described multiple pointolite or disconnects for the electric current that controls described pointolite or the unlatching for controlling described pointolite.
9. the bar code reading facility of the use planar light source illumination according to any one of claim 1 to 7, it is characterized in that, described imaging system (2) comprises an adjustable imaging system (2) of imaging focal length; And/or,
Described imaging system (2) comprises different at least two imaging systems (2) of imaging focal length.
10. the bar code reading facility of the use planar light source illumination according to any one of claim 1 to 7, is characterized in that, described image recognition apparatus is the image recognition apparatus for identifying bar code or Quick Response Code or stealthy recognition image.
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| CN201510448017.8A CN105069390A (en) | 2015-07-27 | 2015-07-27 | Bar code reader using planar light source for illumination |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132026A (en) * | 2017-04-11 | 2017-09-05 | 上海汇尔通信息技术有限公司 | The method of testing and system for the minimum display device backlight illumination that scanning device is supported |
| CN108449549A (en) * | 2018-03-19 | 2018-08-24 | 浙江国自机器人技术有限公司 | A kind of method, apparatus and storage medium adjusting LED light supplement lamp plate brightness |
| CN109388994A (en) * | 2018-09-29 | 2019-02-26 | 贵州省烟草公司贵阳市公司 | Tobacco laser code image-taking device and equipment |
| CN109685057A (en) * | 2019-03-06 | 2019-04-26 | 深圳市互动网络科技有限公司 | A kind of digital recognition apparatus and its data processing algorithm |
| WO2019218109A1 (en) * | 2018-05-14 | 2019-11-21 | 深圳盈天下视觉科技有限公司 | Liquid crystal display screen device for recognizing interactive article, and method for recognizing interactive article therefor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010112950A1 (en) * | 2009-03-31 | 2010-10-07 | Sicpa Holding Sa | Annular light guide illuminator and optical scanner |
| CN102419814A (en) * | 2005-10-24 | 2012-04-18 | 科格内克斯科技和投资公司 | Integrated illumination assembly for symbology reader |
| CN103186759A (en) * | 2013-04-17 | 2013-07-03 | 苏州斯普锐智能系统有限公司 | Barcode scanner with dynamic multi-angle illuminating system |
| CN103268466A (en) * | 2013-05-21 | 2013-08-28 | 苏州斯普锐智能系统有限公司 | Multi-angle lighting bar code scanner |
| CN203630791U (en) * | 2013-12-18 | 2014-06-04 | 深圳市民德电子科技有限公司 | Image identification equipment |
| CN204439570U (en) * | 2015-02-05 | 2015-07-01 | 株式会社理光 | A kind of paper imaging device |
| CN205103836U (en) * | 2015-07-27 | 2016-03-23 | 深圳市民德电子科技股份有限公司 | Use plane light source illuminate's bar code recognition equipment |
-
2015
- 2015-07-27 CN CN201510448017.8A patent/CN105069390A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419814A (en) * | 2005-10-24 | 2012-04-18 | 科格内克斯科技和投资公司 | Integrated illumination assembly for symbology reader |
| WO2010112950A1 (en) * | 2009-03-31 | 2010-10-07 | Sicpa Holding Sa | Annular light guide illuminator and optical scanner |
| CN103186759A (en) * | 2013-04-17 | 2013-07-03 | 苏州斯普锐智能系统有限公司 | Barcode scanner with dynamic multi-angle illuminating system |
| CN103268466A (en) * | 2013-05-21 | 2013-08-28 | 苏州斯普锐智能系统有限公司 | Multi-angle lighting bar code scanner |
| CN203630791U (en) * | 2013-12-18 | 2014-06-04 | 深圳市民德电子科技有限公司 | Image identification equipment |
| CN204439570U (en) * | 2015-02-05 | 2015-07-01 | 株式会社理光 | A kind of paper imaging device |
| CN205103836U (en) * | 2015-07-27 | 2016-03-23 | 深圳市民德电子科技股份有限公司 | Use plane light source illuminate's bar code recognition equipment |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132026A (en) * | 2017-04-11 | 2017-09-05 | 上海汇尔通信息技术有限公司 | The method of testing and system for the minimum display device backlight illumination that scanning device is supported |
| CN107132026B (en) * | 2017-04-11 | 2019-04-30 | 上海汇尔通信息技术有限公司 | The test method and system for the minimum display equipment backlight illumination that scanning device is supported |
| CN108449549A (en) * | 2018-03-19 | 2018-08-24 | 浙江国自机器人技术有限公司 | A kind of method, apparatus and storage medium adjusting LED light supplement lamp plate brightness |
| CN108449549B (en) * | 2018-03-19 | 2021-02-12 | 浙江国自机器人技术股份有限公司 | Method and device for adjusting brightness of LED fill light lamp panel and storage medium |
| WO2019218109A1 (en) * | 2018-05-14 | 2019-11-21 | 深圳盈天下视觉科技有限公司 | Liquid crystal display screen device for recognizing interactive article, and method for recognizing interactive article therefor |
| CN109388994A (en) * | 2018-09-29 | 2019-02-26 | 贵州省烟草公司贵阳市公司 | Tobacco laser code image-taking device and equipment |
| CN109685057A (en) * | 2019-03-06 | 2019-04-26 | 深圳市互动网络科技有限公司 | A kind of digital recognition apparatus and its data processing algorithm |
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Application publication date: 20151118 |