CN204288240U - Dual laser scanning device - Google Patents
Dual laser scanning device Download PDFInfo
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- CN204288240U CN204288240U CN201420777076.0U CN201420777076U CN204288240U CN 204288240 U CN204288240 U CN 204288240U CN 201420777076 U CN201420777076 U CN 201420777076U CN 204288240 U CN204288240 U CN 204288240U
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- laser
- scanning device
- sweep trace
- emergent light
- deflector
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Abstract
The utility model discloses a kind of dual laser scanning device, generating laser sends the first sweep trace and the second sweep trace, first sweep trace is through the first emergent light polaroid, the first completely reflecting mirror, penetrate after first surface mirror condenser, laser deflector, scan being read object, the laser reflected then is sent to decoding unit through the first incident polarizer, the first photoelectric commutator successively after the concave surface of laser deflector, first surface mirror condenser; Second sweep trace penetrates after the second emergent light polaroid, the second completely reflecting mirror, laser deflector, scan being read object, the laser reflected then is sent to decoding unit through the second incident polarizer, the second photoelectric commutator successively after the concave surface of laser deflector, the second camber reflection condenser.The utility model can make device scan speed rise to the twice of original Laser Scanning Equipment, and then greatly improves decoding speed, improves Consumer's Experience.
Description
Technical field
The utility model relates to bar-code identification field, particularly relates to a kind of dual laser scanning device.
Background technology
Bar code scan equipment is a kind of equipment of the information comprised for bar code reading.Its identifies accurately, speed of data entry is fast, and equipment is simple, cost is lower, and in supermarket, library, numerous occasion such as warehouse obtain using more and more widely.Bar code scan equipment can be divided into rainbow optical bar code scanning device (also referred to as CCD scanner) and laser bar code scanning device according to light source difference.Rainbow optical bar code scanning device utilizes photoelectric coupling (CCD) principle, carries out imaging to bar code printing pattern, and then decoding.Its advantage is: without rotating shaft, motor, long service life; Low price.Laser bar code scanning device utilizes laser diode as the single-line type scanner of light source, but it is all better than rainbow optical bar code scanning device in sweep velocity, scanning distance, scan sensitivity etc., therefore main application in the market is laser bar code scanning device.
At present, laser bar code scanning device mainly contains rotary mirror type and mirror two kinds of quivering.Rotary mirror type adopts high-speed motor to drive a prism group to rotate, and the single-point laser that diode is sent becomes being aligned, but the price of rotary mirror type scanning device is too high; The cost of manufacture of mirror of quivering is lower than rotary mirror type, but the laser gun of this principle not easily improves sweep velocity, is generally 33 times/second, the highlyest can reach 100 times/second, needs the occasion carrying out fast scanning not reach the requirement of application at some.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of dual laser scanning device, under the prerequisite of not obvious increase equipment cost and volume, device scan speed can be made to rise to the twice of original Laser Scanning Equipment, and then greatly improve decoding speed, improve Consumer's Experience.
For solving the problems of the technologies described above, a kind of dual laser scanning device that the utility model provides, comprises generating laser, the first emergent light polaroid, the first completely reflecting mirror, first surface mirror condenser, laser deflector, the second completely reflecting mirror, the second emergent light polaroid, the second camber reflection condenser, the first incident polarizer, the first photoelectric commutator, the second incident polarizer, the second photoelectric commutator and decoding unit;
Wherein, described generating laser sends the first sweep trace and the second sweep trace, described first sweep trace is through described first emergent light polaroid, the first completely reflecting mirror, penetrate after first surface mirror condenser, laser deflector, scan being read object, the laser reflected then is sent to decoding unit through the first incident polarizer, the first photoelectric commutator successively after the concave surface of described laser deflector, first surface mirror condenser; Described second sweep trace penetrates after described second emergent light polaroid, the second completely reflecting mirror, laser deflector, scan being read object, the laser reflected then is sent to decoding unit through the second incident polarizer, the second photoelectric commutator successively after the concave surface of described laser deflector, the second camber reflection condenser.
Preferably, spectroscope and the 3rd completely reflecting mirror is also comprised.
Preferably, the laser beam that sends of spectroscope and laser mirror in angle of 45 degrees.
Preferably, described generating laser is double excitation transmitter or 2 single generating lasers.
Preferably, described first emergent light polaroid and described second emergent light polaroid polarization direction are mutually vertical,
Preferably, described first incident polarizer and the second incident polarizer are identical with described first emergent light polaroid and the second emergent light polaroid polarization direction respectively.
Preferably, described first surface mirror condenser and the second camber reflection condenser are provided with aperture.
Preferably, described aperture is circular.
Preferably, described laser deflector is a total reflection wabbler mirror.
Preferably, described decoding unit is binary channels decoding unit or two single channel decoding units.
Deviation is there is in a kind of dual laser scanning device of the utility model two-way sweep trace electric signal on the position being read subject surface, device scan speed can be made to rise to the twice of original Laser Scanning Equipment, and decoding unit has part to cover mutually to two-way sweep trace electric signal on decode time, greatly save decode time, improve decoding speed, improve Consumer's Experience.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the utility model dual laser scanning device structural representation;
Fig. 2-Fig. 3 is the utility model dual laser scanning device first sweep trace scanning process schematic diagram;
Fig. 4 is the utility model dual laser scanning device first sweep trace scanning starting position structural representation;
Fig. 5 is the utility model dual laser scanning device first sweep trace scanning final position structural representation;
Fig. 6 is the utility model dual laser scanning device scanning process sequential chart;
Fig. 7 is the utility model dual laser scanning device second example structure schematic diagram.
Main Reference Numerals illustrates:
Generating laser 1 spectroscope 2
First emergent light polaroid 3 first completely reflecting mirror 4
First surface mirror condenser 5 laser deflector 6
3rd completely reflecting mirror 7 second emergent light polaroid 8
Second completely reflecting mirror 9 second camber reflection condenser 10
First incident polarizer 11 first photoelectric commutator 12
Second incident polarizer 13 second photoelectric commutator 14
The single generating laser 701 of decoding unit 15
Single generating laser 702 is read object 100
Embodiment
For can further description be had to the purpose of this utility model, feature and effect, below coordinate accompanying drawing describe in detail as after.
As Figure 1-5, for the utility model dual laser scanning device structural representation, comprise generating laser 1, spectroscope 2, first emergent light polaroid 3, first completely reflecting mirror 4, first surface mirror condenser 5, laser deflector 6, the 3rd completely reflecting mirror 7, second emergent light polaroid 8, second completely reflecting mirror 9, second camber reflection condenser 10, first incident polarizer 11, first photoelectric commutator 12, second incident polarizer 13, second photoelectric commutator 14 and decoding unit 15;
Generating laser 1 is for Emission Lasers, and described laser preferably with the form outgoing of laser beam, then can be read hot spot object being formed diameter and be less than 1mm after minute surface total reflection;
Spectroscope 2, carries out light splitting for the laser beam sent generating laser 1, described laser beam is divided into the first sweep trace and second sweep trace of energy equivalence; Preferably, the laser beam that spectroscope 2 and laser mirror 1 send in angle of 45 degrees, makes the first sweep trace become the angle of 90 degree with the second sweep trace;
First emergent light polaroid 3 and the second emergent light polaroid 8 polarization direction are mutually vertical, and the first sweep trace and the second sweep trace are respectively by after the first emergent light polaroid 3 and the second emergent light polaroid 8, and polarization direction is also mutually vertical;
First completely reflecting mirror 4, the 3rd completely reflecting mirror 7 and the second completely reflecting mirror 9 are for reflecting the first sweep trace or the second sweep trace;
First surface mirror condenser 5 and the second camber reflection condenser 10 are provided with aperture, and described aperture can be circle, rectangle, rhombus or other shapes; For the first sweep trace by reflecting back through the first completely reflecting mirror 4 and the second completely reflecting mirror 9 and the second sweep trace; Described first surface mirror condenser 5 and the second camber reflection condenser 10 have a concave surface, are respectively used to the convergence of rays reflected from laser deflector 6 and are sent to the first photoelectric commutator 12 or the second photoelectric commutator 14;
Laser deflector 6 for by the first sweep trace and the reflection of the second sweep trace, and is radiated to be read on object 100 and forms hot spot, and when laser deflector 6 swings, hot spot moves formation track while scan; And will reflex in incident polarizer by camber reflection condenser being read object 100 laser that diffuse reflection is returned on the surface along with laser deflector 6 swings; Be that the first sweep trace correspondence propagates schematic diagram as Figure 2-3, swing when laser deflector 6 and converged by first surface mirror condenser 5 towards first surface mirror condenser 5, first sweep trace in a large number and reflex to the first incident polarizer 11 being read object 100 laser that diffuse reflection is returned on the surface; Second sweep trace in like manner; Described laser deflector 6 is a total reflection wabbler mirror, hunting frequency be 30-100 time per second;
First incident polarizer 11 and the second incident polarizer 13 are identical with described first emergent light polaroid 3 and the second emergent light polaroid 8 polarization direction respectively, namely the first incident polarizer 11 is identical with the polarization direction of the first outgoing polarization sheet 3, and the second incident polarizer 13 is identical with the polarization direction of the second outgoing polarization sheet 8; Thus ensure that the first photoelectric commutator 12 receives only the light signal that the track while scan of the first sweep trace formation reflects, not by the interference of the second sweep trace scans content, in like manner, second photoelectric commutator 14 receives only the light signal that the track while scan of the second sweep trace formation reflects, not by the interference of the first sweep trace scans content;
The light signal that first photoelectric commutator 12 and the second photoelectric commutator 14 are respectively used to the track while scan that formed the first sweep trace and the second sweep trace reflects carries out opto-electronic conversion and transfers to decoding unit 15 decoding.
Decoding unit 15, has two path signal acquisition capacity, receives the electric signal of the first photoelectric commutator 12 and the output of the second photoelectric commutator 14 respectively; There is skew in the position of hot spot in bar code of the first sweep trace and the second sweep trace, therefore time life period is put the whole story of the track while scan of the first sweep trace and the formation of the second sweep trace poor, by the swing position of laser deflector 6, produce start signal and the termination signal of two track while scans respectively; Be the initial sum termination signal that the first sweep trace track while scan is corresponding as shown in fig. 4-5; When laser deflector 6 from left to right swings and horizontal position is set to α angle, produce the from left to right track while scan start signal that the first sweep trace is corresponding, when laser deflector 6 from left to right swings and horizontal position is set to 0 jiao, produce the from left to right track while scan termination signal that the first sweep trace is corresponding, when laser deflector 6 swing from right to left with horizontal position be set to 0 jiao, α angle time, produce again the initial sum termination signal of the first sweep trace track while scan from right to left respectively, prompting decoding unit 15 uses the electric signal between putting the whole story to decode; In like manner can generate the initial sum termination signal that the second sweep trace is corresponding; According to the two-way sweep trace dot position information at the whole story that laser deflector 6 provides, decoding unit 15 is decoded to two paths of signals respectively; Described 0 ° of < 0 < 90 °, 0 ° < α < 90 °.
The light path process of the utility model dual laser scanning device is as follows: the laser that described generating laser 1 sends is divided into the first sweep trace and the second sweep trace through described spectroscope 2, described first sweep trace is through described first emergent light polaroid 3, first completely reflecting mirror 4, first surface mirror condenser 5, injection after laser deflector 6, scan being read object 100, the laser reflected is then successively through described laser deflector 6, through the first incident polarizer 11 after the concave surface of first surface mirror condenser 5, first photoelectric commutator 12 is sent to decoding unit 15, described second sweep trace penetrates after described 3rd completely reflecting mirror 7, second emergent light polaroid 8, second completely reflecting mirror 9, laser deflector 6, scan being read object 100, the laser reflected then is sent to decoding unit 15 through the second incident polarizer 13, second photoelectric commutator 14 successively after the concave surface of described laser deflector 6, second camber reflection condenser 10.
Described generating laser 1 can be single laser reflector;
Described decoding unit 15 is binary channels decoding unit or two single channel decoding units.
As shown in Figure 6, for the utility model dual laser scanning device sequential chart, deviation is there is in two-way sweep trace electric signal on the position being read subject surface, can make the utility model dual laser scanning device that device scan speed can be made to rise to the twice of original Laser Scanning Equipment, and decoding unit has part to cover mutually to two-way sweep trace electric signal on decode time, greatly save decode time, improve decoding speed, improve Consumer's Experience.
As shown in Figure 7, for the utility model dual laser scanning device second example structure schematic diagram, the difference of the present embodiment and the first embodiment is, generating laser 1 in first embodiment is become two single generating lasers 701 and 702 from a single generating laser, and reduces spectroscope 2 and the 3rd completely reflecting mirror 7; Also two single generating lasers can be become a double excitation transmitter as required.
By specific embodiment, the utility model has been described in detail above, but these are not formed restriction of the present utility model.When not departing from the utility model principle, those skilled in the art also can make many distortion and improvement, and these also should be considered as protection domain of the present utility model.
Claims (10)
1. a dual laser scanning device, is characterized in that: comprise generating laser, the first emergent light polaroid, the first completely reflecting mirror, first surface mirror condenser, laser deflector, the second completely reflecting mirror, the second emergent light polaroid, the second camber reflection condenser, the first incident polarizer, the first photoelectric commutator, the second incident polarizer, the second photoelectric commutator and decoding unit;
Wherein, described generating laser sends the first sweep trace and the second sweep trace, described first sweep trace is through described first emergent light polaroid, the first completely reflecting mirror, penetrate after first surface mirror condenser, laser deflector, scan being read object, the laser reflected then is sent to decoding unit through the first incident polarizer, the first photoelectric commutator successively after the concave surface of described laser deflector, first surface mirror condenser; Described second sweep trace penetrates after described second emergent light polaroid, the second completely reflecting mirror, laser deflector, scan being read object, the laser reflected then is sent to decoding unit through the second incident polarizer, the second photoelectric commutator successively after the concave surface of described laser deflector, the second camber reflection condenser.
2. dual laser scanning device as claimed in claim 1, is characterized in that: also comprise spectroscope and the 3rd completely reflecting mirror.
3. dual laser scanning device as claimed in claim 2, is characterized in that: the laser beam that spectroscope and laser mirror send in angle of 45 degrees.
4. dual laser scanning device as claimed in claim 1, is characterized in that: described generating laser is double excitation transmitter or 2 single generating lasers.
5. dual laser scanning device as claimed in claim 1, is characterized in that: described first emergent light polaroid and described second emergent light polaroid polarization direction mutually vertical.
6. dual laser scanning device as claimed in claim 1, is characterized in that: described first incident polarizer and the second incident polarizer are identical with described first emergent light polaroid and the second emergent light polaroid polarization direction respectively.
7. dual laser scanning device as claimed in claim 1, is characterized in that: described first surface mirror condenser and the second camber reflection condenser are provided with aperture.
8. dual laser scanning device as claimed in claim 7, is characterized in that: described aperture is for circular.
9. dual laser scanning device as claimed in claim 1, is characterized in that: described laser deflector is a total reflection wabbler mirror.
10. dual laser scanning device as claimed in claim 1, is characterized in that: described decoding unit is binary channels decoding unit or two single channel decoding units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420777076.0U CN204288240U (en) | 2014-12-10 | 2014-12-10 | Dual laser scanning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420777076.0U CN204288240U (en) | 2014-12-10 | 2014-12-10 | Dual laser scanning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204288240U true CN204288240U (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420777076.0U Withdrawn - After Issue CN204288240U (en) | 2014-12-10 | 2014-12-10 | Dual laser scanning device |
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| CN (1) | CN204288240U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104392199A (en) * | 2014-12-10 | 2015-03-04 | 福建新大陆电脑股份有限公司 | Double-laser scanning equipment |
-
2014
- 2014-12-10 CN CN201420777076.0U patent/CN204288240U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104392199A (en) * | 2014-12-10 | 2015-03-04 | 福建新大陆电脑股份有限公司 | Double-laser scanning equipment |
| CN104392199B (en) * | 2014-12-10 | 2017-10-13 | 福建新大陆电脑股份有限公司 | dual laser scanning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150422 Effective date of abandoning: 20171013 |
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| AV01 | Patent right actively abandoned |