CN205103836U - Use plane light source illuminate's bar code recognition equipment - Google Patents
Use plane light source illuminate's bar code recognition equipment Download PDFInfo
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- CN205103836U CN205103836U CN201520551410.5U CN201520551410U CN205103836U CN 205103836 U CN205103836 U CN 205103836U CN 201520551410 U CN201520551410 U CN 201520551410U CN 205103836 U CN205103836 U CN 205103836U
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- light source
- light
- bar code
- imaging system
- code reading
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Abstract
The utility model relates to an use plane light source illuminate's bar code recognition equipment, wait to distinguish the imaging system of image and be used for doing including being used for acquireing imaging system gets for instance the interval grow light system who carries out the light filling, imaging system's optical axis coincident or parallel or be the setting of acute angle contained angle with grow light system's optical axis. Grow light system includes the light source, is used for to make the light uniform irradiation of light source arrives imaging system gets for instance interval even light device. The utility model discloses in can make the light uniform irradiation who sends to the getting for instance interval of imaging system of light source through even light device, let get and distinguish each regional illumination intensity who accepts of image like treating on the interval and match, let wait to distinguish image display more clear, the contrast is higher, has guaranteed that bar code recognition equipment can obtain the more high -quality image information who waits to distinguish the image, the realization of being convenient for is swiftly decoded.
Description
Technical field
The utility model 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.
Utility model content
The technical problems to be solved in the utility model is, provides the bar code reading facility that a kind of use planar light source of improvement throws light on.
The utility model solves the technical scheme that its technical matters adopts: 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 bar code reading facility 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 utility model illumination, there is following beneficial effect: in the utility model, 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 bar code reading facility 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 utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structural representation of the bar code reading facility that the use planar light source in the utility model embodiment throws light on;
Fig. 2 is the schematic perspective view of bar code reading facility identification in time distinguishing image in Fig. 1;
Fig. 3 is the effect schematic diagram of the image to be identified that the bar code reading facility in Fig. 1 obtains;
Fig. 4 is the schematic perspective view of the bar code reading facility in background technology;
Fig. 5 is the effect schematic diagram of the image to be identified that the bar code reading facility in Fig. 4 obtains.
Embodiment
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
As shown in Figure 1 to Figure 3, the bar code reading facility of the use planar light source illumination in the utility model preferred embodiment 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, bar code reading facility 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 bar code reading facility 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 embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model instructions 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 utility model.
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 bar code reading facility is the image recognition apparatus for identifying bar code or Quick Response Code or stealthy recognition image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520551410.5U CN205103836U (en) | 2015-07-27 | 2015-07-27 | Use plane light source illuminate's bar code recognition equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520551410.5U CN205103836U (en) | 2015-07-27 | 2015-07-27 | Use plane light source illuminate's bar code recognition equipment |
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| Publication Number | Publication Date |
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| CN205103836U true CN205103836U (en) | 2016-03-23 |
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| CN201520551410.5U Expired - Fee Related CN205103836U (en) | 2015-07-27 | 2015-07-27 | Use plane light source illuminate's bar code recognition equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105069390A (en) * | 2015-07-27 | 2015-11-18 | 深圳市民德电子科技股份有限公司 | Bar code reader using planar light source for illumination |
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2015
- 2015-07-27 CN CN201520551410.5U patent/CN205103836U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105069390A (en) * | 2015-07-27 | 2015-11-18 | 深圳市民德电子科技股份有限公司 | Bar code reader using planar light source for illumination |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 Termination date: 20210727 |
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| CF01 | Termination of patent right due to non-payment of annual fee |