CN102298690B - Bar code reading device - Google Patents
Bar code reading device Download PDFInfo
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- CN102298690B CN102298690B CN201110228373.0A CN201110228373A CN102298690B CN 102298690 B CN102298690 B CN 102298690B CN 201110228373 A CN201110228373 A CN 201110228373A CN 102298690 B CN102298690 B CN 102298690B
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- bar code
- light
- light source
- lens
- collector lens
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- 239000011521 glass Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract 2
- 230000003287 optical effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The invention relates to a bar code reading device which comprises a shell 300 and a light prompting assembly 200 arranged in the shell 300. The light prompting assembly 200 comprises a light source 201 and a condenser lens 202 in front of the light source 201. The condenser lens 202 is a cylindrical body with uniform thickness, wherein two opposite side surfaces of the condenser lens are a light entrance surface and a light extraction surface, the light extraction surface is a cambered surface protruding outside, and the light entrance surface is a cambered surface protruding outside or a plane. An optical signal sent by the light source 201 is focused by the condenser lens 202 to form a linear type prompting cursor 203. The light prompting assembly of the bar code reading device provided in the invention has the characteristics of simple structure and low cost, and facilitates production manufacture and installation maintenance. Simultaneously, light sent by the light source forms an image, imaging brightness is high and imaging sharpness is good.
Description
Technical field
The invention belongs to photoelectric field, specifically, relate to a kind of bar code recognizing apparatus.
Background technology
First the N.T.Woodland of the bar code Shi You U.S. proposed in 1949.In recent years along with computer technology improving constantly and universal, the application of bar code has obtained very large development.Traditional reading code mode is the bar code that the alignment lens of bar code recognizing apparatus is read, and according to the illumination of light source in bar code recognizing apparatus, utilizes naked eyes to judge the recognition distance of determining bar code.Not of uniform size due to bar code, and the distance of camera lens of bar code and bar code recognizing apparatus is also different, therefore in recognition, often can not effectively guarantee to be transferred to best recognition distance and position.
For addressing the above problem, mostly adopt at present light reminding method, normally a light source, one or more convex lens, one or more imaging part (as lenticular lenses) etc. are formed to the light prompting assembly of bar code recognizing apparatus.Refer to Fig. 4 and Fig. 5, be respectively two example structure figure of the light prompting assembly of bar code recognizing apparatus in prior art.As shown in Figure 4 and Figure 5, the light that light source 1 sends passes through respectively convex lens 3 and lenticular lenses 2, or respectively by after lenticular lenses 2 and convex lens 3, has formed prompt 4, and the shape of prompt 4 is that the equal proportion of hole shape in lenticular lenses 2 is amplified, and shows and is " ten " font.When bar code recognizing apparatus is during at reading bar code, that can send according to bar code recognizing apparatus is radiated at the prompt 4 in bar code, changes bar code recognizing apparatus and is read the relative position between bar code, just bar code reading quickly.
In prior art, the light of bar code recognizing apparatus prompting modular construction is complicated, cost is higher; And because lenticular lenses 2 has covered the part light that light source 1 sends, cause prompt 4 brightness low, poor definition.
Summary of the invention
The technical problem to be solved in the present invention is,, cost higher defect complicated for the said structure of prior art, provide a kind of bar code recognizing apparatus simple in structure, lower-cost.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of bar code recognizing apparatus, comprise casing and the light prompting assembly that is arranged on described casing inside, described light prompting assembly comprises light source and is arranged on the collector lens in described light source the place ahead, described collector lens is the column of even thickness, wherein two relative sides are respectively incidence surface and exiting surface, described exiting surface is outwardly cambered surface, described incidence surface is outwardly cambered surface or is plane, the light signal that described light source sends is after described collector lens focuses on, form the prompt of " one " font.
In bar code recognizing apparatus of the present invention, in described collector lens the place ahead, be provided with reading code lens, the axial line place of described prompt and described reading code lens is at grade.
In bar code recognizing apparatus of the present invention, described collector lens is glass condenser or transparent plastic collector lens.
In bar code recognizing apparatus of the present invention, on described casing, be respectively equipped with support described light source light source bracket, support the collector lens support of described collector lens and support the reading code lens carrier of described reading code lens.
Implement bar code recognizing apparatus of the present invention, there is following beneficial effect: only adopt light source and collector lens to form light prompting assembly, wherein collector lens structure is a kind of special lens, due to its cylinder that is even thickness, it forms the prompt of in-line after focusing on, utilize collector lens to replace lenticular lenses of the prior art and convex lens, not only simple in structure, cost is lower, can be for manufacturing and installation and maintenance bring convenience; Meanwhile, because the light of avoiding using lenticular lenses, light source to send all can imaging, thereby brightness of image is high, sharpness might as well.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the fundamental diagram of bar code recognizing apparatus of the present invention;
Fig. 2 is the vertical view of the light prompting assembly of bar code recognizing apparatus of the present invention;
Fig. 3 is the stereographic map of the light prompting assembly of bar code recognizing apparatus of the present invention;
Fig. 4 is the structural drawing of the light prompting assembly of prior art bar code recognizing apparatus the first embodiment;
Fig. 5 is the structural drawing of the light prompting assembly of prior art bar code recognizing apparatus the second embodiment.
Embodiment
For technical characterictic of the present invention, object and effect being had more clearly, understand, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
Referring to Fig. 1, is the fundamental diagram of bar code recognizing apparatus of the present invention.Incorporated by reference to consulting Fig. 2 and Fig. 3, be respectively vertical view and the stereographic map of the light prompting assembly of bar code recognizing apparatus of the present invention.As shown in Figure 1, Figure 2 and Figure 3, bar code recognizing apparatus of the present invention comprises casing 300 and light prompting assembly 200, and light prompting assembly 200 is arranged on the inside of casing 300.Light prompting assembly 200 comprises: light source 201 and collector lens 202, and light source 201 is rear, and collector lens 202 is front.
The column that collector lens 202 is even thickness, wherein two relative sides are respectively incidence surface and exiting surface, and exiting surface is outwardly cambered surface, and incidence surface is outwardly cambered surface or is plane.Two printing opacity sides of the collector lens 202 that Fig. 1, Fig. 2 and Fig. 3 show are outwardly cambered surface, in practical application, also can be as required, and design exiting surface is outwardly cambered surface, incidence surface is plane.The carrier that collector lens 202 is a kind of printing opacity can be glass condenser, transparent plastic collector lens etc.The light signal that light source 201 sends is the prompt 203 that forms after collector lens 202 refractions, and prompt 203 is imaged in bar code 401, is " one " font.The bar code 401 that Fig. 1 shows is one dimension code.The bar code 401 that Fig. 2 shows is Quick Response Code, and because the visual angle of Fig. 2 is for overlooking, bar code 401 should be in alignment, in order to demonstrate bar code 401, is overturn after 90 ° and is plotted on figure.Fig. 3 has shown the reason of 203 one-tenth of prompts " " font: this is owing to not reflecting at directions X glazing, still keep original direction, and in the Y direction after anaclasis, produce convergence effect, at this light focusing in the Y direction, thereby formed the prompt 203 of " one " font.
The present invention arranges a light prompting assembly 200 in bar code recognizing apparatus.The light signal that light source 201 sends can form a prompt 203 after collector lens 202 refractions, and axial line 311 places of the reading code lens 301 (being positioned at the place ahead of collector lens 202) of prompt 203 and bar code recognizing apparatus at grade.Like this, can guarantee the position of prompt 203 indications, be exactly the position of reading code lens 301 scannings.
For above-mentioned all parts is fixed, on casing 300, be respectively equipped with the reading code lens carrier of the light source bracket of supporting light sources 201, the collector lens support that supports collector lens 202 and support reading code lens 301.Light source bracket, collector lens support and reading code lens carrier are not shown in the drawings.
In order to adapt to the bar code 401 of different sizes, different density degree, light prompting assembly 200 of the present invention is also furnished with the multiple collector lens 202 with different focal.In general, the collector lens 202 that focal length is large is applicable to large and thin bar code 401, and the collector lens 202 that focal length is little is applicable to small and dense bar code 401.
While using bar code recognizing apparatus reading bar code 401, that according to light source 201, sends is radiated at the prompt 203 in bar code 401, changes distance 101 or both relative positions up and down between bar code recognizing apparatus and bar code 401.When position is between the two in suitable scope, just can be by reading code lens 301 bar code reading 401 quickly.
Bar code recognizing apparatus provided by the invention, only adopts light source and collector lens to form light prompting assembly, not only simple in structure, cost is lower, can be for manufacturing and installation and maintenance bring convenience; Meanwhile, avoid using lenticular lenses, the light that light source sends all can imaging, thereby brightness of image is high, sharpness might as well.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not departing from the scope situation that aim of the present invention and claim protect, also can make a lot of forms, within these all belong to protection of the present invention.
Claims (3)
1. a bar code recognizing apparatus, comprise casing (300) and be arranged on the inner light prompting assembly (200) of described casing (300), it is characterized in that, described light prompting assembly (200) comprises light source (201) and is arranged on the collector lens (202) in described light source (201) the place ahead, the column that described collector lens (202) is even thickness, wherein two relative sides are respectively incidence surface and exiting surface, described exiting surface is outwardly cambered surface, described incidence surface is outwardly cambered surface or is plane, the light signal that described light source (201) sends is after described collector lens (202) focuses on, form the prompt (203) of " one " font, in described collector lens (202) the place ahead, be provided with reading code lens (301), described prompt (203) is located at grade with the axial line (311) of described reading code lens (301).
2. bar code recognizing apparatus according to claim 1, is characterized in that, described collector lens (202) is glass condenser or transparent plastic collector lens.
3. bar code recognizing apparatus according to claim 1 and 2, it is characterized in that, on described casing (300), be respectively equipped with support described light source (201) light source bracket, support the collector lens support of described collector lens (202) and support the reading code lens carrier of described reading code lens (301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110228373.0A CN102298690B (en) | 2011-08-10 | 2011-08-10 | Bar code reading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110228373.0A CN102298690B (en) | 2011-08-10 | 2011-08-10 | Bar code reading device |
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| Publication Number | Publication Date |
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| CN102298690A CN102298690A (en) | 2011-12-28 |
| CN102298690B true CN102298690B (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110228373.0A Expired - Fee Related CN102298690B (en) | 2011-08-10 | 2011-08-10 | Bar code reading device |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103679113A (en) * | 2013-12-27 | 2014-03-26 | 北京握奇智能科技有限公司 | Positioning and focusing method and system of OTP (One Time Password) device in two-dimensional bar code scanning |
| CN104809423B (en) * | 2015-04-27 | 2019-08-09 | 深圳市民德电子科技股份有限公司 | Bar code reading facility |
| CN105224902B (en) * | 2015-09-23 | 2019-01-04 | 深圳市民德电子科技股份有限公司 | The bar code reading facility of bar code to be distinguished is positioned with two groups of cursors |
| CN105574466B (en) * | 2015-12-23 | 2018-07-31 | 苏州佳世达电通有限公司 | Bar code processing method and bar code processing device |
| WO2019242012A1 (en) * | 2018-06-22 | 2019-12-26 | 深圳市民德电子科技股份有限公司 | Bar code recognition engine collimation structure and cross image diffraction condensing lens |
| CN109299625B (en) * | 2018-10-15 | 2023-08-29 | 深圳市民德电子科技股份有限公司 | Image recognition equipment and illumination aiming structure thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5600116A (en) * | 1993-11-29 | 1997-02-04 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical data reading device |
| CN2630943Y (en) * | 2003-06-23 | 2004-08-04 | 神镭光电股份有限公司 | Improved structure of bar code scanner |
| CN101145194A (en) * | 2006-09-15 | 2008-03-19 | 福建新大陆自动识别技术有限公司 | Bar code recognizing apparatus focusing method |
| CN101425126A (en) * | 2007-09-19 | 2009-05-06 | 东芝泰格有限公司 | Code symbol reading apparatus |
| CN101846287A (en) * | 2009-03-27 | 2010-09-29 | 利卫精密股份有限公司 | Device for eliminating overlapping shadow or track shadow of point light source |
| CN202167037U (en) * | 2011-08-10 | 2012-03-14 | 深圳市民德电子科技有限公司 | Bar code reader |
-
2011
- 2011-08-10 CN CN201110228373.0A patent/CN102298690B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5600116A (en) * | 1993-11-29 | 1997-02-04 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical data reading device |
| CN2630943Y (en) * | 2003-06-23 | 2004-08-04 | 神镭光电股份有限公司 | Improved structure of bar code scanner |
| CN101145194A (en) * | 2006-09-15 | 2008-03-19 | 福建新大陆自动识别技术有限公司 | Bar code recognizing apparatus focusing method |
| CN101425126A (en) * | 2007-09-19 | 2009-05-06 | 东芝泰格有限公司 | Code symbol reading apparatus |
| CN101846287A (en) * | 2009-03-27 | 2010-09-29 | 利卫精密股份有限公司 | Device for eliminating overlapping shadow or track shadow of point light source |
| CN202167037U (en) * | 2011-08-10 | 2012-03-14 | 深圳市民德电子科技有限公司 | Bar code reader |
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| CN102298690A (en) | 2011-12-28 |
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Address after: 518057 Guangdong city of Shenzhen province science and Technology Park of Nanshan District South Road 29, students start building room 2304 Patentee after: SHENZHEN MINDE ELECTRONICS TECHNOLOGY Ltd. Address before: 518057 Guangdong city of Shenzhen province science and Technology Park of Nanshan District South Road 29, students start building room 2304 Patentee before: SHENZHEN MINDE ELECTRONICS TECHNOLOGY Ltd. |
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Denomination of invention: A bar code reading device Effective date of registration: 20200818 Granted publication date: 20140416 Pledgee: Shenzhen hi tech investment small loan Co.,Ltd. Pledgor: SHENZHEN MINDE ELECTRONICS TECHNOLOGY Ltd. Registration number: Y2020980005088 |
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Date of cancellation: 20220125 Granted publication date: 20140416 Pledgee: Shenzhen hi tech investment small loan Co.,Ltd. Pledgor: SHENZHEN MINDE ELECTRONICS TECHNOLOGY Ltd. Registration number: Y2020980005088 |
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