CN102799852B - A kind of bar code identifying device - Google Patents
A kind of bar code identifying device Download PDFInfo
- Publication number
- CN102799852B CN102799852B CN201210278779.4A CN201210278779A CN102799852B CN 102799852 B CN102799852 B CN 102799852B CN 201210278779 A CN201210278779 A CN 201210278779A CN 102799852 B CN102799852 B CN 102799852B
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- Prior art keywords
- bar code
- laser
- laser beam
- condensing unit
- optical system
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- 230000003287 optical effect Effects 0.000 claims abstract description 15
- 230000011514 reflex Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
Abstract
The present invention relates to a kind of bar code identifying device, comprise housing, be arranged on the optical system in described housing and the light signal that described optical system reflects be converted to the photoelectric commutator of electric signal, it is characterized in that, described optical system comprises for generation of the laser focusing device of laser beam and for reflecting and deflecting the beam condensing unit of the laser beam that described laser focusing device sends; Wherein, described beam condensing unit is provided with optically focused concave panel, and described optically focused concave panel is provided with the reflecting curved surface for expanding described laser beam xsect vertical direction size.In the present invention, the optically focused curved surface of beam condensing unit can increase the size of laser beam xsect in the vertical direction, therefore, it is possible to increase the effective laser coverage area on optically focused concave panel, thus improve effective light signal amount and signal to noise ratio (S/N ratio), reach the ability of enhancement bar code recognition device identification bar code further.
Description
Technical field
The present invention relates to a kind of barcode recognition equipment, more particularly, relate to a kind of bar code identifying device with higher strip code recognition capability.
Background technology
The identification equipment usable range of one dimension functionality of laser bar code is very extensive.This identification equipment signal source part forms primarily of with lower component: laser produces and focalizer, reflection and collect optically focused part, make a laser form pendulous device, the photoinduction element of line laser.
Existing technology produces and focalizer transmitted beam from laser, by reflecting and collecting the reflective facets on optically focused part, being formed on the pendulous device of line laser, forming scanning light beam directive bar code by beam reflection to making a laser.After the concave reflecting surface that the folded light beam returned from bar code reflexes to reflection by the pendulous device making a laser and form line laser and collects optically focused part focuses on, guide to photoinduction element, light signal is converted into electric signal by photoinduction element, by carrying out identification decoding to the analysis of this electric signal.But effective light signal amount that current this technology exists on the concave reflecting surface reflexing to reflection and collection optically focused part is not high, and signal to noise ratio (S/N ratio) is low, thus causes the problem that bar-code identification ability is low.
Summary of the invention
The technical problem to be solved in the present invention is, for the defect that the above-mentioned barcode recognition equipment bar-code identification ability of prior art is low, provides a kind of bar code identifying device.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of bar code identifying device, comprise housing, be arranged on the optical system in described housing and the light signal that described optical system reflects be converted to the photoelectric commutator of electric signal, described optical system comprises for generation of the laser focusing device of laser beam and for reflecting and deflecting the beam condensing unit of the laser beam that described laser focusing device sends; Wherein, described beam condensing unit is provided with optically focused concave panel, and described optically focused concave panel is provided with the reflecting curved surface for expanding described laser beam xsect vertical direction size.
Bar code identifying device of the present invention, wherein, described reflecting curved surface comprises the Cylinder Surface with certain radius.
Bar code identifying device of the present invention, wherein, the described optical system laser beam also comprised for being reflected by described beam condensing unit converts line laser light beam to and by this line laser beam projection to the pendulous device on bar code.
Bar code identifying device of the present invention, wherein, described photoelectric commutator comprises for light signal being converted into electric signal and carrying out identifying the photoinduction element of decoding to electric signal, and described photoinduction element will be reflected by bar code and is converted into electric signal through the laser beam of described pendulous device and beam condensing unit and carries out to this electric signal identifications and decodes.
Implement bar code identifying device of the present invention, there is following beneficial effect: in the present invention, the reflecting curved surface of beam condensing unit can increase the size of laser beam xsect in the vertical direction, therefore, it is possible to increase the effective laser coverage area on optically focused concave panel, thus improve effective light signal amount and signal to noise ratio (S/N ratio), reach the ability of enhancement bar code recognition device identification bar code further.
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 a kind of bar code identifying device preferred embodiment of the present invention;
Fig. 2 is the structural representation of beam condensing unit in a kind of bar code identifying device preferred embodiment of the present invention;
Fig. 3 is the cut-open view at A-A position in a kind of bar code identifying device preferred embodiment of the present invention Fig. 2;
Fig. 4 is the principle sketch of beam condensing unit in a kind of bar code identifying device preferred embodiment of the present invention.
Embodiment
As Figure 1-3, in a preferred embodiment of the invention, this bar code identifying device comprises housing 100, be arranged on the optical system in housing 100 and the light signal that optical system reflects is converted to the photoelectric commutator of electric signal, and optical system comprises again for generation of the laser focusing device 101 of laser beam and for reflecting and the beam condensing unit 102 of laser beam that sends of deflection laser focalizer 101 further; Wherein, beam condensing unit 102 is provided with optically focused concave panel 103, and optically focused concave panel 103 is provided with the reflecting curved surface 104 for expansion of laser light beam cross-section vertical direction size.Preferably, this reflecting curved surface 104 can adopt the Cylinder Surface with certain radius.
In addition, the optical system laser beam also comprised for being reflected by beam condensing unit 102 in this bar code identifying device converts line laser light beam to and by this line laser beam projection to the pendulous device 105 in bar code.What photoelectric commutator then adopted is for light signal being converted into electric signal and carrying out identifying the photoinduction element 106 of decoding to electric signal, and this photoinduction element 106 will be reflected by bar code 200 and is converted into electric signal through the laser beam of pendulous device 105 and beam condensing unit 102 and carries out to this electric signal identifications and decodes.
Reflecting curved surface 104 on beam condensing unit 102, the shape of the xsect in the vertical direction of light beam can be made to change, even if the size of laser spots vertical direction becomes large (as shown in Figure 4), the plane mirror of lasing light emitter on pendulous device 105 reflexes on bar code 200, then the plane mirror on bar code 200 and pendulous device 105 is reflected back on the optically focused concave panel 103 of beam condensing unit 102 again, effective laser coverage area on this optically focused concave panel 103 is increased, because the effective laser entered on optically focused concave panel 103 all can enter photoinduction element 106 by focusing on the rear overwhelming majority, so the present invention can make to increase into effective light signal amount of photoinduction element 106, thus raising signal to noise ratio (S/N ratio), strengthen the ability of barcode recognition equipment identification bar code.
Above embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement accordingly, can not limit the scope of the invention.All equalizations done with the claims in the present invention scope change and modify, and all should belong to the covering scope of the claims in the present invention.
Claims (3)
1. a bar code identifying device, comprise housing (100), be arranged on the optical system in described housing (100) and the light signal that described optical system reflects be converted to the photoelectric commutator of electric signal, it is characterized in that, described optical system comprises for generation of the laser focusing device (101) of laser beam and for reflecting and deflecting the beam condensing unit (102) of the laser beam that described laser focusing device (101) sends; Wherein, described beam condensing unit (102) is provided with optically focused concave panel (103), described optically focused concave panel (103) is provided with the reflecting curved surface (104) for expanding described laser beam xsect vertical direction size, and described reflecting curved surface (104) comprises the Cylinder Surface with certain radius.
2. bar code identifying device according to claim 1, it is characterized in that, the described optical system laser beam also comprised for being reflected by described beam condensing unit (102) converts line laser light beam to and by this line laser beam projection to the pendulous device (105) on bar code (200).
3. bar code identifying device according to claim 2, it is characterized in that, described photoelectric commutator comprises for light signal being converted into electric signal and carrying out identifying the photoinduction element (106) of decoding to electric signal, and described photoinduction element (106) will be reflected by bar code (200) and is converted into electric signal through the laser beam of described pendulous device (105) and beam condensing unit (102) and carries out identification to this electric signal and decodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210278779.4A CN102799852B (en) | 2012-08-07 | 2012-08-07 | A kind of bar code identifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210278779.4A CN102799852B (en) | 2012-08-07 | 2012-08-07 | A kind of bar code identifying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102799852A CN102799852A (en) | 2012-11-28 |
| CN102799852B true CN102799852B (en) | 2015-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210278779.4A Expired - Fee Related CN102799852B (en) | 2012-08-07 | 2012-08-07 | A kind of bar code identifying device |
Country Status (1)
| Country | Link |
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| CN (1) | CN102799852B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106556382A (en) * | 2015-09-30 | 2017-04-05 | 西安华科光电有限公司 | A kind of image laser alignment system |
| CN112200289A (en) * | 2020-11-17 | 2021-01-08 | 中国科学院上海微系统与信息技术研究所 | Photoelectron bar code system based on non-Hermite coupling principle |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5627359A (en) * | 1991-09-17 | 1997-05-06 | Metrologic Instruments, Inc. | Laser code symbol scanner employing optical filtering system having narrow band-pass characteristics and spatially separated optical filter elements with laser light collection optics arranged along laser light return path disposed therebetween |
| CN2518122Y (en) * | 2001-11-28 | 2002-10-23 | 深圳市云海通讯股份有限公司 | Optical scanner |
| CN201955798U (en) * | 2011-02-28 | 2011-08-31 | 西安富立叶微电子有限责任公司 | Laser barcode scanning and reading device |
| CN202711267U (en) * | 2012-08-07 | 2013-01-30 | 深圳市民德电子科技有限公司 | Bar code identification device |
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2012
- 2012-08-07 CN CN201210278779.4A patent/CN102799852B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN102799852A (en) | 2012-11-28 |
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Address after: 518057 Guangdong Province, Nanshan District high tech Zone, Central Industrial Park, industrial park, building 1, paragraph 5, layer (1) No. 25 () Applicant 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 Applicant before: SHENZHEN MINDE ELECTRONICS TECHNOLOGY Ltd. |
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Denomination of invention: A bar code recognition device Effective date of registration: 20200818 Granted publication date: 20151014 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: 20151014 Pledgee: Shenzhen hi tech investment small loan Co.,Ltd. Pledgor: SHENZHEN MINDE ELECTRONICS TECHNOLOGY Ltd. Registration number: Y2020980005088 |
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Granted publication date: 20151014 Termination date: 20210807 |
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