CN104392199B - dual laser scanning device - Google Patents
dual laser scanning device Download PDFInfo
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- CN104392199B CN104392199B CN201410755626.3A CN201410755626A CN104392199B CN 104392199 B CN104392199 B CN 104392199B CN 201410755626 A CN201410755626 A CN 201410755626A CN 104392199 B CN104392199 B CN 104392199B
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Abstract
The invention discloses a kind of dual laser scanning device, generating laser sends the first scan line and the second scan line, first scan line passes through the first outgoing light polarization plate, the first completely reflecting mirror, projected after first surface mirror condenser, laser deflector, it is scanned to being read object, the laser reflected is then sent to decoding unit behind laser deflector, the concave surface of first surface mirror condenser by the first incident polarizer, the first optical-electrical converter successively；Second scan line is projected after the second outgoing light polarization plate, the second completely reflecting mirror, laser deflector, it is scanned to being read object, the laser reflected is then sent to decoding unit behind laser deflector, the concave surface of the second camber reflection condenser by the second incident polarizer, the second optical-electrical converter successively.The present invention can be such that device scan speed rises to twice of original Laser Scanning Equipment, and then greatly improve decoding speed, improve Consumer's Experience.
Description
Technical field
Field, more particularly to a kind of dual laser scanning device are recognized the present invention relates to bar code.
Background technology
Bar code scan equipment is a kind of equipment for reading the information that bar code is included.It recognizes accurate, data input
Speed is fast, and equipment is simple, cost is relatively low, and in supermarket, library, warehouse etc., numerous occasions obtain more and more widely using.
Bar code scan equipment can be divided into rainbow optical bar code scanning device (also referred to as CCD scanners) according to light source difference and laser bar code is swept
Retouch equipment.Rainbow optical bar code scanning device is to utilize photoelectric coupling (CCD) principle, bar code printing pattern is imaged, Ran Houzai
Decoding.Its advantage is：Without rotating shaft, motor, service life is long；It is cheap.Laser bar code scanning device is to utilize laser two
Pole pipe as light source single-line type scanner, but its sweep speed, scanning distance, scan sensitivity etc. be better than rainbow optical bar code
Scanning device, therefore mainly apply in the market is laser bar code scanning device.
At present, laser bar code scanning device mainly has rotary mirror type and two kinds of mirror of quivering.Rotary mirror type is to use high-speed motor band
Dynamic prism group rotation, makes the single-point laser that diode is sent become being aligned, but the price of rotary mirror type scanning device is too high；Quiver
The cost of manufacture of mirror be less than rotary mirror type, but this principle laser gun be difficult improve sweep speed, generally 33 times/second, most
Height can reach 100 times/second, not reach the requirement of application in some occasions for needing quickly to be scanned.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of dual laser scanning device, not substantially increase equipment into
On the premise of this and volume, device scan speed can be made to rise to, and then greatly improve solution twice of original Laser Scanning Equipment
Code speed, improves Consumer's Experience.
In order to solve the above technical problems, a kind of dual laser scanning device for providing of the present invention, including generating laser, the
One outgoing light polarization plate, the first completely reflecting mirror, first surface mirror condenser, laser deflector, the second completely reflecting mirror, second go out
Penetrate light polarization plate, the second camber reflection condenser, the first incident polarizer, the first optical-electrical converter, the second incident polarizer,
Two optical-electrical converters and decoding unit；
Wherein, the generating laser sends the first scan line and the second scan line, and first scan line is by described
Projected after first outgoing light polarization plate, the first completely reflecting mirror, first surface mirror condenser, laser deflector, to being read thing
Body is scanned, and the laser reflected is then passed through behind the laser deflector, the concave surface of first surface mirror condenser successively
Cross the first incident polarizer, the first optical-electrical converter and be sent to decoding unit；Second scan line passes through second outgoing
Project, be scanned to being read object, the laser reflected is then after light polarization plate, the second completely reflecting mirror, laser deflector
Turn successively behind the laser deflector, the concave surface of the second camber reflection condenser by the second incident polarizer, the second photoelectricity
Parallel operation is sent to decoding unit.
It is preferred that, in addition to spectroscope and the 3rd completely reflecting mirror.
It is preferred that, the laser beam that spectroscope is sent with generating laser is in angle of 45 degrees.
It is preferred that, the generating laser is bidifly optical transmitting set or 2 single generating lasers.
It is preferred that, the first outgoing light polarization plate and the second outgoing light polarization plate polarization direction are mutually perpendicular to,
It is preferred that, first incident polarizer and the second incident polarizer respectively with the first outgoing light polarization plate and
Second outgoing light polarization plate polarization direction is identical.
It is preferred that, it is provided with aperture on the first surface mirror condenser and the second camber reflection condenser.
It is preferred that, the aperture is circle.
It is preferred that, the laser deflector is a total reflection wabbler mirror.
It is preferred that, the decoding unit is binary channels decoding unit or two single channel decoding units.
A kind of dual laser scanning device two-way scan line electric signal of the present invention is deposited on the position for be read subject surface
In deviation, device scan speed can be made to rise to twice of original Laser Scanning Equipment, and decoding unit is to two-way scan line
Electric signal has part covering mutually on the decoding time, greatlys save the decoding time, improves decoding speed, improves Consumer's Experience.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description:
Fig. 1 is dual laser scanning device structural representation of the present invention；
Fig. 2-Fig. 3 is the first scan line of dual laser scanning device scanning process schematic diagram of the present invention；
Fig. 4 is the first scan line of dual laser scanning device scanning starting position structural representation of the present invention；
Fig. 5 is the scan line of dual laser scanning device first scanning final position structural representation of the present invention；
Fig. 6 is dual laser scanning device scanning process timing diagram of the present invention；
Fig. 7 is dual laser scanning device second embodiment structural representation of the present invention.
Main Reference Numerals explanation：
The spectroscope 2 of generating laser 1
The completely reflecting mirror 4 of first outgoing light polarization plate 3 first
The laser deflector 6 of first surface mirror condenser 5
The outgoing light polarization plate 8 of 3rd completely reflecting mirror 7 second
The camber reflection condenser 10 of second completely reflecting mirror 9 second
The optical-electrical converter 12 of first incident polarizer 11 first
The optical-electrical converter 14 of second incident polarizer 13 second
The single generating laser 701 of decoding unit 15
Single generating laser 702 is read object 100
Embodiment
For that there can be further description to the purpose of the present invention, feature and effect, accompanying drawing is coordinated to be described in detail as after below.
As Figure 1-5, it is dual laser scanning device structural representation of the present invention, including generating laser 1, spectroscope
2nd, the first outgoing light polarization plate 3, the first completely reflecting mirror 4, first surface mirror condenser 5, laser deflector the 6, the 3rd are totally reflected
Mirror 7, the second outgoing light polarization plate 8, the second completely reflecting mirror 9, the second camber reflection condenser 10, the first incident polarizer 11,
One optical-electrical converter 12, the second incident polarizer 13, the second optical-electrical converter 14 and decoding unit 15；
Generating laser 1 is used to launch laser, laser outgoing preferably in the form of laser beam, then is all-trans by minute surface
The hot spot that diameter is less than 1mm can be formed after penetrating being read on object；
Spectroscope 2, the laser beam for being sent to generating laser 1 carries out light splitting, and the laser beam is divided into energy phase
When the first scan line and the second scan line；It is preferred that, the laser beam that spectroscope 2 and generating laser 1 are sent in angle of 45 degrees,
Make the first scan line and the second scan line into 90 degree of angle；
First outgoing light polarization plate 3 and the polarization direction of the second outgoing light polarization plate 8 are mutually perpendicular to, the first scan line and second
Scan line respectively by the first outgoing light polarization plate 3 and the second outgoing light polarization plate 8 after, polarization direction is also mutually perpendicular to；
First completely reflecting mirror 4, the 3rd completely reflecting mirror 7 and the second completely reflecting mirror 9 are swept for the first scan line of reflection or second
Retouch line；
Aperture is provided with the camber reflection condenser 10 of first surface mirror condenser 5 and second, the aperture can be circle
Shape, rectangle, rhombus or other shapes；Swept for first by being reflected back through the first completely reflecting mirror 4 and the second completely reflecting mirror 9
Retouch line and the second scan line；The camber reflection condenser 10 of first surface mirror condenser 5 and second has a concave surface, respectively
For by the convergence of rays reflected from laser deflector 6 and being sent to the first optical-electrical converter 12 or the second optical-electrical converter
14；
Laser deflector 6 is read shape on object 100 for the first scan line and second to be scanned into line reflection, and are radiated at
Into hot spot, hot spot moves to form scanning track when laser deflector 6 is swung；And will be read as laser deflector 6 is swung
The laser that diffusing reflection is returned on the surface of object 100 is reflexed in incident polarizer by camber reflection condenser；As Figure 2-3
Schematic diagram is propagated for the first scan line correspondence, when laser deflector 6 is swung and is swept towards first surface mirror condenser 5, first
Retouch line and largely converged and reflected by first surface mirror condenser 5 being read the laser that diffusing reflection is returned on the surface of object 100
To the first incident polarizer 11；Second scan line is similarly；The laser deflector 6 is a total reflection wabbler mirror, and hunting frequency is
30-100 times per second；
First incident polarizer 11 and the second incident polarizer 13 go out with the first outgoing light polarization plate 3 and second respectively
Penetrate that the polarization direction of light polarization plate 8 is identical, i.e. the first incident polarizer 11 is identical with the polarization direction of the first outgoing polarization piece 3,
Two incident polarizers 13 are identical with the polarization direction of the second outgoing polarization piece 8；So as to ensure 12 receptions of the first optical-electrical converter
The optical signal reflected on the scanning track of first scan line formation, is not disturbed by the second scan line scans content, similarly, and second
The optical signal reflected on the scanning track that optical-electrical converter 14 receives the formation of the second scan line, is not scanned interior by the first scan line
The interference of appearance；
First optical-electrical converter 12 and the second optical-electrical converter 14 are respectively used to linear to the first scan line and the second scanning
Into scanning track on the optical signal that reflects carry out opto-electronic conversion and transmit to decoding unit 15 to be decoded.
Decoding unit 15, with two path signal acquisition capacity, receives the first optical-electrical converter 12 and the second photoelectricity respectively
The electric signal that converter 14 is exported；There is skew in position of the hot spot of the first scan line and the second scan line in bar code, therefore
The whole story point time existence time of the scanning track of first scan line and the formation of the second scan line is poor, passes through laser deflector 6
Swing position, produces the initial signal and termination signal of two scanning tracks respectively；Swept as shown in fig. 4-5 for the first scan line
Retouch the corresponding starting in track and termination signal；When laser deflector 6 is from left to right swung it is at an angle with horizontal level when, produce the
Scan line is corresponding from left to right to scan track initial signal, when laser deflector 6 is from left to right swung and horizontal level is into θ
During angle, produce that the first scan line is corresponding from left to right to scan trail termination signal, swings from right to left when laser deflector 6 and
Horizontal level is into θ angle, α angles when, and produce starting and termination signal that the first scan line scans track from right to left respectively, point out
Decoding unit 15 is decoded using the electric signal between whole story point；The corresponding starting of the second scan line and termination can similarly be generated
Signal；The two-way scan line whole story dot position information provided according to laser deflector 6, decoding unit 15 enters to two paths of signals respectively
Row decoding；Described 0 °<θ<90°、0°<α<90°.
The light path process of dual laser scanning device of the present invention is as follows：The laser that the generating laser 1 is sent is through described
2 points of spectroscope is the first scan line and the second scan line, and first scan line is by the first outgoing light polarization plate 3, the
Project, be scanned to being read object 100, instead after one completely reflecting mirror 4, first surface mirror condenser 5, laser deflector 6
It is emitted back towards the laser come then incident inclined by first behind the laser deflector 6, the concave surface of first surface mirror condenser 5 successively
Shake piece 11, the first optical-electrical converter 12 is sent to decoding unit 15；Second scan line by the 3rd completely reflecting mirror 7,
Project, be scanned to being read object 100, instead after second outgoing light polarization plate 8, the second completely reflecting mirror 9, laser deflector 6
It is emitted back towards the laser come then incident by second behind the laser deflector 6, the concave surface of the second camber reflection condenser 10 successively
Polarizer 13, the second optical-electrical converter 14 are sent to decoding unit 15.
The generating laser 1 can be single laser reflector；
The decoding unit 15 is binary channels decoding unit or two single channel decoding units.
As shown in fig. 6, for dual laser scanning device timing diagram of the present invention, two-way scan line electric signal is being read object
There is deviation on the position on surface, dual laser scanning device of the present invention can be enable device scan speed is risen to original laser
Twice of scanning device, and decoding unit has part covering mutually to two-way scan line electric signal on the decoding time, significantly
The decoding time is saved, decoding speed is improved, Consumer's Experience is improved.
As shown in fig. 7, being dual laser scanning device second embodiment structural representation of the present invention, the present embodiment and first
The difference of embodiment is, the generating laser 1 in first embodiment is changed into two single laser from a single generating laser
Transmitter 701 and 702, and reduce the completely reflecting mirror 7 of spectroscope 2 and the 3rd；Two single generating lasers can also be become as needed
For a bidifly optical transmitting set.
The present invention is described in detail above by specific embodiment, but these not constitute the limit to the present invention
System.Without departing from the principles of the present invention, those skilled in the art can also make many modification and improvement, and these also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of dual laser scanning device, it is characterised in that：Including generating laser, the first outgoing light polarization plate, first complete
Speculum, first surface mirror condenser, laser deflector, the second completely reflecting mirror, the second outgoing light polarization plate, the second curved surface are anti-
Penetrate condenser, the first incident polarizer, the first optical-electrical converter, the second incident polarizer, the second optical-electrical converter and decoding single
Member；
Wherein, the generating laser sends the first scan line and the second scan line, and first scan line passes through described first
Project, enter to being read object after outgoing light polarization plate, the first completely reflecting mirror, first surface mirror condenser, laser deflector
Row scanning, the laser reflected is then successively behind the laser deflector, the concave surface of first surface mirror condenser by the
One incident polarizer, the first optical-electrical converter are sent to decoding unit；Second scan line is inclined by second emergent light
Shake injection after piece, the second completely reflecting mirror, laser deflector, be scanned to being read object, the laser reflected is then successively
By the second incident polarizer, the second optical-electrical converter behind the laser deflector, the concave surface of the second camber reflection condenser
It is sent to decoding unit.
2. dual laser scanning device as claimed in claim 1, it is characterised in that：Also include spectroscope and the 3rd total reflection
Mirror.
3. dual laser scanning device as claimed in claim 2, it is characterised in that：Spectroscope and swashing that generating laser is sent
Light beam is in angle of 45 degrees.
4. dual laser scanning device as claimed in claim 1, it is characterised in that：The generating laser is launched for double excitation
Device or 2 single generating lasers.
5. dual laser scanning device as claimed in claim 1, it is characterised in that：The first outgoing light polarization plate and described
Second outgoing light polarization plate polarization direction is mutually perpendicular to.
6. dual laser scanning device as claimed in claim 1, it is characterised in that：First incident polarizer and second enter
Penetrate polarizer identical with the first outgoing light polarization plate and the second outgoing light polarization plate polarization direction respectively.
7. dual laser scanning device as claimed in claim 1, it is characterised in that：The first surface mirror condenser and
Aperture is provided with two camber reflection condensers.
8. dual laser scanning device as claimed in claim 7, it is characterised in that：The aperture is circle.
9. dual laser scanning device as claimed in claim 1, it is characterised in that：The laser deflector is a total reflection pendulum
Index glass.
10. dual laser scanning device as claimed in claim 1, it is characterised in that：The decoding unit decodes for binary channels
Unit or two single channel decoding units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410755626.3A CN104392199B (en) | 2014-12-10 | 2014-12-10 | dual laser scanning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410755626.3A CN104392199B (en) | 2014-12-10 | 2014-12-10 | dual laser scanning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104392199A CN104392199A (en) | 2015-03-04 |
| CN104392199B true CN104392199B (en) | 2017-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410755626.3A Active CN104392199B (en) | 2014-12-10 | 2014-12-10 | dual laser scanning device |
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| Country | Link |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6806139B2 (en) * | 2016-03-30 | 2021-01-06 | 株式会社ニコン | Beam scanning device and pattern drawing device |
| JP6998488B1 (en) * | 2021-07-07 | 2022-01-18 | 川崎重工業株式会社 | Laser scanning device and laser scanning method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2461081Y (en) * | 2001-01-17 | 2001-11-21 | 巨普光电(上海)有限公司 | Double-laser light-source bar code scanner |
| CN203191996U (en) * | 2013-01-25 | 2013-09-11 | 刘国胜 | Bar-code scanner with laser para-position indication |
| CN203706225U (en) * | 2014-01-22 | 2014-07-09 | 深圳市兴通物联科技有限公司 | Laser transmitting device and barcode scanner |
| CN203706227U (en) * | 2014-01-22 | 2014-07-09 | 深圳市兴通物联科技有限公司 | Barcode gun |
| CN204288240U (en) * | 2014-12-10 | 2015-04-22 | 福建新大陆电脑股份有限公司 | Dual laser scanning device |
-
2014
- 2014-12-10 CN CN201410755626.3A patent/CN104392199B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2461081Y (en) * | 2001-01-17 | 2001-11-21 | 巨普光电(上海)有限公司 | Double-laser light-source bar code scanner |
| CN203191996U (en) * | 2013-01-25 | 2013-09-11 | 刘国胜 | Bar-code scanner with laser para-position indication |
| CN203706225U (en) * | 2014-01-22 | 2014-07-09 | 深圳市兴通物联科技有限公司 | Laser transmitting device and barcode scanner |
| CN203706227U (en) * | 2014-01-22 | 2014-07-09 | 深圳市兴通物联科技有限公司 | Barcode gun |
| CN204288240U (en) * | 2014-12-10 | 2015-04-22 | 福建新大陆电脑股份有限公司 | Dual laser scanning device |
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| Publication number | Publication date |
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| CN104392199A (en) | 2015-03-04 |
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Address after: 350015 No. 1 Rujiangxi Road, Mawei District, Fuzhou City, Fujian Province Patentee after: New Continent Digital Technology Co., Ltd. Address before: 350015 No. 1 Rujiangxi Road, Mawei District, Fuzhou City, Fujian Province Patentee before: Fujian Newland Computer Co., Ltd. |
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