CN104809423B - Bar code reading facility - Google Patents
Bar code reading facility Download PDFInfo
- Publication number
- CN104809423B CN104809423B CN201510206220.4A CN201510206220A CN104809423B CN 104809423 B CN104809423 B CN 104809423B CN 201510206220 A CN201510206220 A CN 201510206220A CN 104809423 B CN104809423 B CN 104809423B
- Authority
- CN
- China
- Prior art keywords
- bar code
- light
- prompt
- imaging system
- code reading
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
Abstract
The present invention relates to a kind of bar code reading facilities, including the imaging system for obtaining bar code image to be distinguished and for wait distinguish the light prompt component for forming prompt on bar code.It includes spaced indicating light and lens unit that light, which prompts component, and the optical signal of indicating light forms prompt after lens unit.The light prompt component of bar code reading facility of the invention includes indicating light and lens unit, indicating light is forming prompt wait distinguish by lens unit on bar code, bar code reading facility is set to obtain the image of the bar code to be distinguished of better quality, to realize quick decoding, meanwhile light prompt modular construction is simple, cost is relatively low, high production efficiency.
Description
Technical field
The present invention relates to photoelectric fields, more specifically to a kind of bar code reading facility.
Background technique
Bar code is to be proposed first by the N.T.Woodland in the U.S. in 1949.Recently as computer technology
It is continuously improved and universal, the application of bar code has been greatly developed.Traditional reading code mode is by bar code reading facility
The bar code that is read of alignment lens judge to determine item using visually according to the illumination of light source in bar code reading facility
The recognition distance of shape code.It is not of uniform size due to bar code, and the distance of camera lens of bar code and bar code reading facility is also different
Sample, therefore cannot be effectively ensured often in recognition and be transferred to best recognition distance and position.
To solve the above problems, the relevant technologies generally use cursor prompt method, one group or two groups of cursors are usually used
Component is prompted, each cursor prompt component is by a light source, one or more lens, one or more imaging part (such as light
Grid) etc. composition.Please refer to Fig. 4 and Fig. 5, respectively two realities of the light prompt component of bar code reading facility in the related technology
Apply a structure chart.As shown in Figure 4 and Figure 5, the light that light source 1 issues passes through convex lens 2 and lenticular lenses 3 respectively, or passes through respectively
After lenticular lenses 3 and convex lens 2, form prompt 4, and the shape of prompt 4 be in lenticular lenses 2 hole shape etc.
Ratio enlargement shows the shape in needs such as " ten " font or dots.When such bar code reading facility is in recognition bar shaped
When code, bar code reading facility can be changed according to prompt 4 of the irradiation that bar code reading facility issues on bar code
Be conducive to efficiently reading bar code to obtain the image of better quality with the relative position being read between bar code.
Light prompt modular construction complexity, the higher cost of such bar code reading facility；And since lenticular lenses 3 cover
The part light that light source 1 issues, causes 4 brightness of prompt low, when supplementary lighting sources brightness is higher, such prompt clarity
Difference.
Summary of the invention
The technical problem to be solved in the present invention is that providing a kind of improved bar code reading facility.
The technical solution adopted by the present invention to solve the technical problems is: construct a kind of bar code reading facility, including with
In the imaging system for obtaining bar code image to be distinguished and for being mentioned in the light wait distinguish formation prompt on bar code
Show component；
The light prompt component includes spaced indicating light and lens unit, the optical signal warp of the indicating light
The prompt is formed after the lens unit.
Preferably, the axial line of light prompt component and the axial line of the imaging system be in the same plane.
Preferably, the axis parallel of the axial line of the light prompt component and the imaging system, and between the two
Distance is less than or equal to 10mm；Or,
The axial line of the light prompt component and the axial line of the imaging system intersect at the capture of the imaging system
On direction, and the position that the position of the prompt (33) formed and the bar code to be distinguished (50) are placed is opposite
It answers.
Preferably, the light prompt component includes the lens unit of replaceable a variety of different focal lengths；Or,
The light prompt component includes the adjustable lens unit of focal position.
Preferably, the lens unit includes convex lens.
Preferably, the indicating light between the lens unit at a distance from it is adjustable.
Preferably, the indicating light includes illuminator, the shape and hair of the prompt that the illuminator is presented
Body of light shape is similar or identical.
Preferably, the indicating light includes the LED light with the illuminator.
Preferably, the imaging system includes the adjustable imaging system of imaging focal length；Or,
The imaging system includes at least two different imaging systems of imaging focal length.
Preferably, the bar code reading facility further includes at least one capture section for being used to illuminate the imaging system
Supplementary lighting sources, the brightness of the supplementary lighting sources is adjustable.
Implement bar code reading facility of the invention, has the advantages that bar code reading facility of the invention
Light prompt component includes indicating light and lens unit, and indicating light is forming prompt wait distinguish by lens unit on bar code
Cursor enables bar code reading facility to obtain the image of the bar code to be distinguished of better quality, to realize quick decoding, together
When, shouldLight prompt modular construction is simple, cost is relatively low, high production efficiency.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is working principle diagram when bar code reading facility in the embodiment of the present invention distinguishes bar code to be identified；
Fig. 2 is the stereoscopic schematic diagram of the light prompt component in Fig. 1；
Fig. 3 is the optical imaging concept schematic diagram of the light prompt component in Fig. 1；
Fig. 4 is the structural schematic diagram of the light prompt component of bar code reading facility first embodiment in background technique；
Fig. 5 is the structural schematic diagram of the light prompt component of bar code reading facility second embodiment in background technique.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail
A specific embodiment of the invention.
As shown in Figure 1, the bar code reading facility in a preferred embodiment of the invention includes shell 10, is arranged in shell
Imaging system 20, light prompt component 30 and supplementary lighting sources 40, imaging system 20 in 10 treat recognition 50 capture of bar code, and light mentions
Show component 30, the optical signal of supplementary lighting sources 40 is irradiated on bar code 50 to be distinguished.
Imaging system 20 can be one, and the bar code to be distinguished 50 by adjusting imaging focal length acquisition different distance
Image information, certainly, imaging system 20 or the two or more imaging systems 20 different including imaging focal length,
To obtain the image information of the bar code to be distinguished 50 of corresponding position, and the to be distinguished bar code 50 acquired by analysis respectively
Image information distinguishes the function of bar code to realize.
It includes spaced indicating light 31 and lens unit 32 that light, which prompts component 30, and the setting of lens unit 32 is prompting
On 31 direction of illumination of light source, the optical signal of indicating light 31 forms prompt 33 after lens unit 32.Indicating light 31 wraps
The LED light with illuminator 311 is included, the luminous body of light shape generated of illuminator 311 can be specific shape, by lens list
The shape amplification proportional to the shape of illuminator 311 of the prompt 33 presented after member 32, can be presented on bar code to be distinguished
It allows people to see on 50, and judges bar code 50 to be distinguished in the identifiable distance range of imaging system 20 according to the prompt 33
It is interior.In other embodiments, the shape of prompt 33 can also diminution identical or proportional with the shape of illuminator 311.
Preferably, prompt 33 is imaged in the plane of the placement of bar code 50, so that user passes through observation prompt
33 are directed at bar code 50.
Lens unit 32 generally includes convex lens, and the imaging of illuminator 311 is formed prompt 33.It is different remote in order to identify
Close bar code, it includes the lens unit 32 of replaceable a variety of different focal lengths that light, which prompts component 30,.In general, focal length is longer
Lens unit 32 in remotely imaging clearly, suitable for placing the identification of bar code 50 to be distinguished more at a distance, focal length is short
Identification of the lens unit 32 in more nearby imaging clearly, suitable for closer distance bar code 50 to be distinguished.In other embodiments,
It can also be realized by adjusting the distance between indicating light 31 and lens unit 32 to 33 size of prompt and image-forming range
It adjusts, to realize that prompt 33 matches with practical 50 position of bar code to be distinguished.
Certainly, the combination of lens unit 32 or one or more lens, by adjusting the distance between each lens
To adjust the focal length of lens unit 32, the position adjusting for the prompt 33 that realization illuminator 311 is formed, so that satisfaction is placed on
The identification of the bar code to be distinguished 50 of different location.
In order to guarantee the position of the instruction of prompt 33 and the center of 20 capture of imaging system bar code 50 to be distinguished
Substantially it is consistent, in general, the axial line of light prompt component 30 and the axial line of imaging system 20 are in the same plane.Further
Ground, the axial line and the axial line of imaging system 20 of light prompt component 30 are parallel to each other, make light prompt component 30 axial line and
Distance between the axial line of imaging system 20 is as small as possible, it is preferable that is generally no greater than 10mm.In some other embodiment,
The axial line of light prompt component 30 and the axial line of imaging system 20 can also intersect on the capture direction of imaging system 20, and with
The position of the prompt 33 of formation and 50 placement location of bar code to be distinguished are corresponding.In the above conditions, prompt 33 refers to
The position for the bar code to be distinguished 50 that the position shown is scanned with imaging system 20 is consistent substantially, when prompt 33 impinge upon to
Distinguish bar code 50 center when, bar code 50 to be distinguished is also located essentially on the axial line of imaging system 20, at this time to
Recognition bar code 50 is in the center of the scanning of imaging system 20, and picture quality is high, is conducive to decoding.
Certainly, component 30 is prompted to light when corresponding in the position for guaranteeing prompt 33 and placing wait distinguish bar code 50
Axial line and the axial line of imaging system 20 can also spatially intersect.
Supplementary lighting sources 40 are used to illuminate the capture section of imaging system 20, to allow bar shaped to be distinguished in the case where darker
50 display of code is more clear, obtains the image of high quality, and quantity can be one or more.The brightness illuminated in order to prevent
Excessive lightness or darkness, the brightness of supplementary lighting sources 40 is adjustable, to meet suitable capture brightness.In multiple supplementary lighting sources 40, can lead to
The quantity opened is crossed to control brightness, can also flow through the size of current of supplementary lighting sources 40 by controlling and control brightness.
It is to be appreciated that above-mentioned each technical characteristic can be used in any combination and unrestricted.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (8)
1. a kind of bar code reading facility, which is characterized in that including the imaging system for obtaining bar code to be distinguished (50) image
It unites (20) and the light for forming prompt (33) on the bar code (50) to be distinguished prompts component (30)；
Light prompt component (30) includes spaced indicating light (31) and lens unit (32), the indicating light
(31) optical signal forms the prompt (33) after the lens unit (32)；
The indicating light (31) includes illuminator (311), and the lens unit (32) includes convex lens, and the convex lens is by institute
It states illuminator (311) imaging and forms the prompt (33)；The prompt (33) that the illuminator (311) is presented
Shape and illuminator (311) shape are similar or identical.
2. bar code reading facility according to claim 1, which is characterized in that the axial line of light prompt component (30)
In the same plane with the axial line of the imaging system (20).
3. bar code reading facility according to claim 2, which is characterized in that the axial line of light prompt component (30)
With the axis parallel of the imaging system (20), and distance between the two be less than or equal to 10mm；Or,
The axial line of light prompt component (30) and the axial line of the imaging system (20) intersect at the imaging system
(20) on capture direction, and formed the prompt (33) position and the bar code to be distinguished (50) place
Position is corresponding.
4. bar code reading facility according to claim 1, which is characterized in that light prompt component (30) includes can be more
The lens unit (32) for a variety of different focal lengths changed；Or,
Light prompt component (30) includes the adjustable lens unit of focal position (32).
5. bar code reading facility according to claim 4, which is characterized in that the indicating light (31) and the lens
Distance between unit (32) is adjustable.
6. bar code reading facility according to claim 1, which is characterized in that the indicating light (31) include band
State the LED light of illuminator (311).
7. bar code reading facility according to claim 1, which is characterized in that the imaging system (20) includes that imaging is burnt
Away from an adjustable imaging system；Or,
The imaging system (20) includes at least two different imaging systems of imaging focal length.
8. bar code reading facility according to claim 1 or claim 7, which is characterized in that the bar code reading facility also wraps
The supplementary lighting sources (40) in the capture section that at least one is used to illuminate the imaging system (20) are included, the supplementary lighting sources (40)
Brightness is adjustable.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510206220.4A CN104809423B (en) | 2015-04-27 | 2015-04-27 | Bar code reading facility |
| PCT/CN2015/093130 WO2016173224A1 (en) | 2015-04-27 | 2015-10-28 | Bar code reading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510206220.4A CN104809423B (en) | 2015-04-27 | 2015-04-27 | Bar code reading facility |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104809423A CN104809423A (en) | 2015-07-29 |
| CN104809423B true CN104809423B (en) | 2019-08-09 |
Family
ID=53694234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510206220.4A Active CN104809423B (en) | 2015-04-27 | 2015-04-27 | Bar code reading facility |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104809423B (en) |
| WO (1) | WO2016173224A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106778430A (en) * | 2017-02-15 | 2017-05-31 | 上海鹰捷智能科技有限公司 | A kind of two-dimentional identifying device |
| CN107122694A (en) * | 2017-06-16 | 2017-09-01 | 北京鼎九信息工程研究院有限公司 | The light filling sighting means and image scanning apparatus of a kind of image scanning apparatus |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8061616B2 (en) * | 2009-12-18 | 2011-11-22 | Symbol Technologies, Inc. | Aiming sight for a barcode reader |
| CN102298690B (en) * | 2011-08-10 | 2014-04-16 | 深圳市民德电子科技有限公司 | Bar code reading device |
| CN202167037U (en) * | 2011-08-10 | 2012-03-14 | 深圳市民德电子科技有限公司 | Bar code reader |
| CN202976114U (en) * | 2012-12-13 | 2013-06-05 | 福州二维信息科技有限公司 | Bar code reader with special focusing patterns |
| CN204576532U (en) * | 2015-04-27 | 2015-08-19 | 深圳市民德电子科技股份有限公司 | Bar code reading facility |
| 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 |
-
2015
- 2015-04-27 CN CN201510206220.4A patent/CN104809423B/en active Active
- 2015-10-28 WO PCT/CN2015/093130 patent/WO2016173224A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN104809423A (en) | 2015-07-29 |
| WO2016173224A1 (en) | 2016-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104809423B (en) | Bar code reading facility | |
| CN106416225B (en) | Remote visual inspection image capture system and method | |
| CN102119361B (en) | In-camera based method of detecting defect eye with high accuracy | |
| CN102833569B (en) | Be used for the equipment of the element depth of estimating 3D scene | |
| JP6362050B2 (en) | Imaging apparatus, illumination control apparatus, and illumination control method | |
| CN105122943A (en) | A method of characterizing a light source and a mobile device | |
| US20150286043A1 (en) | Annular illumination structure | |
| CN102859994A (en) | Method for visualising spatially-resolved measurement results and corresponding measuring arrangement | |
| CN108234874B (en) | Method and device for adjusting imaging precision of somatosensory camera | |
| JP2013252185A (en) | Endoscope and endoscope apparatus | |
| CN109561819A (en) | The control method of endoscope apparatus and endoscope apparatus | |
| EP3701330B1 (en) | System and method for optical inspection of an object | |
| CN204576532U (en) | Bar code reading facility | |
| CN105723285B (en) | Holographic equipment, the method and system that alignment is realized using holographic | |
| CN205899162U (en) | Spot projector looses based on LED light source | |
| US10670790B2 (en) | System and method for illuminating and identifying an object | |
| CN104068863A (en) | Photographing device for forensic science rough surface fingerprint evidence and photographing method thereof | |
| CN203120072U (en) | Camera testing device | |
| WO2018185744A1 (en) | A system and method for capturing an iris of a subject | |
| CN106407964B (en) | Device, method and terminal equipment for acquiring iris by using visible light source | |
| US20100039615A1 (en) | Device for obtaining an iris image | |
| CN104613817B (en) | The brightness control system of sight and sight | |
| JP2014241160A (en) | Light irradiation device and program | |
| CN208766402U (en) | Optical 3-dimensional image forming apparatus | |
| CN105224902B (en) | The bar code reading facility of bar code to be distinguished is positioned with two groups of cursors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |