CN1325084A - Bar code scanner - Google Patents
Bar code scanner Download PDFInfo
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- CN1325084A CN1325084A CN 00117626 CN00117626A CN1325084A CN 1325084 A CN1325084 A CN 1325084A CN 00117626 CN00117626 CN 00117626 CN 00117626 A CN00117626 A CN 00117626A CN 1325084 A CN1325084 A CN 1325084A
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- bar code
- code scanner
- optical sensor
- light beam
- opening
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Abstract
The hand-held bar code scanning device comprises a long-bar shell body whose front end possessess an opening through which the light beam can be passed, in said sell body there is equipped with a single circuit board on which there are provided with a LED light source, a light guide device, and an optical sensor and a demodulating circuit. The light guide device is set between LED light source and opening of shell body, after the light beam coming from LED light source is passed through light guide device, it can be reflected by bar code of product positioned at opening place of shell body, and can be detected by optical sensor, then the demodulating circuit can be used for demodulating signal produced by optical sensor to obtain correspondent bar code signal.
Description
The present invention relates to a kind of hand held bar code scanner, particularly a kind of light source and optical sensor all are arranged at the bar code scanner on the single circuit board.
Bar code scanner now generally is used in each supermarket or sales field, to be used for handling efficiently the commodity that item number or price are encoded with the bar coding mode.The principle of operation of relevant bar code scanner has been found in many prior arts, as: No. 179959 Taiwan patents of bulletin number, or U.S. Pat P5,932, No. 860, however the design of these prior art bar code scanner inside but is very complicated comparatively speaking.
With reference to Fig. 1.Fig. 1 is the exploded view of known pen type bar code scanner 10.Known bar code scanner 10 includes a housing 12 and a circuit board 14 is arranged in the housing 12, includes an optical sensor 28 and a control circuit (not shown) on the circuit board.In housing 12, still contain an occluder (pupil) 16, lens 18, a light source 22, certain hyte part 20.Bar code scanner 10 still comprises one scan read head 24, and it is most advanced and sophisticated and be provided with one and read lens 26.
Though the design of bar code scanner 10 be it seems very direct, but reality flow process on its output when making these devices is but very complicated, thereby make its price also high, especially four led light sources 22 are owing to must be contained near scanning read head 24 and reading lens 26 parts, its volume must be very little, therefore make its specification special and price is also higher, simultaneously because four led light sources 22 scan read head 24 near front end, its power supply must also must weld power lead 21 when assembling by connecing power lead 21 supplies on the back-end circuit plate 14 in addition.In addition, lens 18 and 26 must be assembled in artificial mode owing to volume is little, more make at its assembling flow path and become complicated.
Therefore fundamental purpose of the present invention is to provide a kind of and has the simplification inner member thereby make it can save the bar code scanner of complicated flow process in assembling, therefore can provide price more cheap bar code scanner, to solve the above problems.
For realizing described purpose, the invention provides a kind of hand held bar code scanner, be used for scanning bar code on the article to produce a barcode signal in the mode of holding, this scanister includes: a strip housing that is fit to hold, and it includes an opening and passes through for light beam; One single circuit board is arranged in this housing, and this circuit board includes: a light source is used for sending a uniform beam, to advance along a horizontal direction; One optical sensor is used for receiving the light beam once crossing modulation, and is converted to corresponding modulating signal; One demodulator circuit is to receive the modulating signal from this optical sensor, to be demodulated into corresponding barcode signal; And a photoconduction leading-in device, be arranged at the opening part of this housing, and include one first reflecting surface; Wherein this light directing arrangement can guide the opening that passes through this housing from the light beam of this light source via the reflection of this first reflecting surface, behind the modulation of this light beam via bar code on the article to be scanned, can be by this this light directing arrangement of opening reflected back, and this photoconduction leading-in device can guide to the light beam of this process modulation this optical sensor, so that be converted to corresponding modulating signal, and subsequent demodulation is corresponding barcode signal.
Fig. 1 is the exploded view of known pen type bar code scanner.
Fig. 2 is the synoptic diagram of the bar code scanner of first embodiment of the invention.
Fig. 3 is the top view of the first embodiment light travel path shown in Figure 2.
Fig. 4 is the exploded view of the bar code scanner of second embodiment of the invention.
Fig. 5 is the synoptic diagram of the bar code scanner of first embodiment of the invention.
Fig. 6 is the top view of the second embodiment light travel path shown in Figure 5.
Fig. 7 is the side view of the first embodiment light travel path shown in Figure 6.
Fig. 8 is the exploded view of the bar code scanner of third embodiment of the invention.
With reference to Fig. 2 and Fig. 3.Fig. 2 is the synoptic diagram of the bar code scanner 30 of first embodiment of the invention.Fig. 3 is the top view of the light travel path 35 of the first embodiment bar code scanner 30 shown in Figure 2.Bar code scanner 30 includes a housing 31, and its front end also is provided with an opening 32, and housing 31 is to be designed to the mode that strip is fit to hold, so that the user grips, opening 32 then is to be designed to and can to appear and return once again in the housing 31 for scanning light beam.
In housing 31, bar code scanner 30 also includes single circuit board 33, an occluder (pupil) 38 and a photoconduction leading-in device (light guide) 40.Circuit board 33 includes a light source 34, an optical sensor 36, a demodulator circuit (demodulation circuit) (not shown).In preferred embodiment of the present invention, light source 34 is single led light source, and can be the led light source that the market generally can buy non-special requirement, be used for sending a uniform beam with scanning barcode 27, one optical sensor 36 can be used to receive the light beam of process bar code 27 modulations and be converted to corresponding modulating signal, and a demodulator circuit, reception is from the modulating signal of optical sensor 36, to be demodulated into corresponding barcode signal.
38 of occluders are the front ends that is arranged at optical sensor 36, it acts on the pupil of some similar human body, be used for limiting the range size of the light beam that is incident in optical sensor 36, thus, occluder 38 can make optical sensor 36 only receive light beam from a predetermined direction, just therefore the light beam of being gone into to shine by bar code 27 can reduce the interference that 36 of optical sensors may be subjected to other direction light noises.
In preferred embodiment of the present invention, photoconduction leading-in device 40 is to be made into integration by plastic cement injection moulding, and will be directed to bar code 27 on the article to be scanned from the light beam of light source 34, through behind the modulation of bar code 27, light beam behind the modulation can be by opening 32 reflected light guiding devices, and photoconduction leading-in device 40 can continue to guide to optical sensor 36 with light beam behind the modulation.Photoconduction leading-in device 40 is arranged at opening 32 places of housing 31, includes fixedly microscope base 46 of one first collector lens 42, one first reflecting surface 44 and, and the three is made into integration with plastic cement injection moulding.Shown in the light travel path 35 of Fig. 3, first gathering via first collector lens 42 is unlikely to disperse in the hope of light is strengthened from the light beam of light source 34, then reflexes to the bar code 27 at opening 32 places via first reflecting surface 44.Bar code scanner 30 also comprises one second collector lens 39, fixedly 46 of microscope bases be with the inner face acting in conjunction of housing 31 to support and to fix second collector lens 39.Then be incident in optical sensor 36 through the light beam behind bar code 27 modulations via the gathering of second collector lens 39.Because second collector lens 39 must be assembled really from the light beam behind bar code 27 modulations, therefore its optical precision degree requires relatively also higher, so second collector lens 39 is to be independent of photoconduction leading-in device 40, but not be that other elements with photoconduction leading-in device 40 are made into integration as one first collector lens 42.But because fixedly microscope base 46 arranged, therefore second collector lens 39 can be quite simply and easily be installed on the interior tram of bar code scanner 30 by fixing microscope base 46.
With reference to Fig. 4 to Fig. 7.Fig. 4 to Fig. 7 shows the bar code scanner of second embodiment of the invention.Fig. 4 is the exploded view of the bar code scanner 50 of second embodiment of the invention.Fig. 5 is the synoptic diagram of bar code scanner 50.Fig. 6 is the top view of bar code scanner 50 smooth travel paths.Fig. 7 is the side view of bar code scanner 50 smooth travel paths.The main element of bar code scanner 50 and bar code scanner 30 are quite similar, difference is that promptly its opening is the bottom that is arranged at the long strip type housing, but not its front end, thus, in the design alteration that will make part aspect light travel path and the photoconduction leading-in device.
Photoconduction leading-in device 60 includes fixedly microscope base 66 of first collector lens 62, one first reflecting surface 64, one second reflecting surface 65, one the 3rd reflecting surface 67 and, more than all be to be made into integration with plastic cement injection moulding.The position of second reflecting surface 65 just in time is positioned at the below of first reflecting surface 64.As the narrator of first embodiment institute, the function of first collector lens 62 also is to assemble earlier from the light beam of light source 54, is used for bar code 27 on the scan articles in the hope of light is strengthened.
As person as shown in the light travel path 55 of Fig. 6 and Fig. 7, to advance from the light beam elder generation along continuous straight runs 25 of light source 54, then via first reflecting surface 64 reflex to horizontal direction 25 mutually perpendicular vertical direction 23 on up to second reflecting surface 65, second reflecting surface 65 then can reflex to light beam the bottom end opening 52 of housing 51 obliquely, and is used for bar code on the scan articles.Via the light beam behind the modulation of bar code vertically 23 upwards be incident to the 3rd reflecting surface 67, the three reflectings surface 67 then can be with the beam reflection behind this modulation to horizontal direction 25, to be incident to the optical sensor 56 that is positioned at bar code scanner 50 rears.
As the narrator of first embodiment institute, second embodiment also comprises second collector lens 59 and is focused to optical sensor 56 with the light beam with along continuous straight runs 25 incidents, fixedly 66 of microscope bases be with the inner face acting in conjunction of housing 51 to support and to fix second collector lens 59, it can be illustrated among Fig. 4 and Fig. 5, as can be seen from the figure the special design of photoconduction leading-in device 60 be for make its easily civilian dress put in housing 51.For example, housing 51 also has structure 68 and 71, so that corresponding element matches on energy and the photoconduction leading-in device 60.Structure 68 also can be used to help to support and fix second reflecting surface 65 in addition, and 71 of structures are the location cylindrical voids 70 that is used for being inserted on the photoconduction leading-in device 60.
With reference to Fig. 8.Fig. 8 is the exploded view of the bar code scanner 70 of third embodiment of the invention.Bar code scanner 70 includes a upper shell 72 and a lower house 74, its front end also is provided with an opening 78, a upper shell 72 and a lower house 74 are to be designed to the mode that strip is fit to hold, so that the user grips, opening 78 then is to be designed to and can to appear and return once again in upper shell 72 and the lower house 74 for scanning light beam.Take in a single circuit board 76 in the upper and lower casing 72,74, wherein and include a led light source 84, an optical sensor 86, a demodulator circuit (not shown).Bar code scanner 70 includes first collector lens 83 similar with front embodiment, one second collector lens 88, occluder 82 and stationary installation 80 in addition and is used for fixing aforementioned components.First collector lens 83 is arranged at the place ahead of light source 84, be used for to be focused to from the light of light source 84 on the bar code on the article to be scanned, light beam via the bar code modulation after, can be incident to second collector lens 88 from the guiding channel 90 of stationary installation 80, then arrive optical sensor 86 again via occluder 82.Because led light source 84 just is arranged at opening 78 places of lower house 74, therefore can save the light leading-in device 40,60 of two embodiment in front in the present embodiment.
Though the present invention only provides above-mentioned different light travel path, yet those skilled in the art can be from wherein deriving many variations, and the present invention is not exceeded with the light travel path of disclosed three kinds of embodiment yet.
Compare with known technology, the present invention has disclosed a kind of bar code scanner of element assembly working of simplifying to save assembly cost and manpower, because light source and optical sensor all are to be fixed on the single circuit board, therefore not needing provides light source required power supply as the known technology additional power supply line of still needing, and can save manpower and come source of welding current line in assembling.In addition, because bar code scanner of the present invention has redesigned the inside light path of scanning ray, therefore can replace four led light sources that volume is little, specification is special in the prior art with single, common led light source.And the photoconduction leading-in device of bar code scanner of the present invention also integrated first collector lens and each reflecting surface and fixedly microscope base inject moulding with plastic cement and be made into integration, add fixedly that microscope base can help to install easily second collector lens, more can effectively simplify the element assembly working.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to claim scope of the present invention change and modify, and all should belong to the covering scope of claim of the present invention.
Claims (19)
1. hand held bar code scanner is used for scanning bar code on the article to produce a barcode signal in the mode of holding, and this scanister includes:
The one strip housing that is fit to hold, it includes an opening and passes through for light beam;
One single circuit board is arranged in this housing, and this circuit board includes:
One light source is used for sending a uniform beam, to advance along a horizontal direction;
One optical sensor is used for receiving the light beam once crossing modulation, and is converted to corresponding modulating signal;
One demodulator circuit is to receive the modulating signal from this optical sensor, to be demodulated into corresponding barcode signal; And
One photoconduction leading-in device is arranged at the opening part of this housing, and includes one first reflecting surface;
Wherein this light directing arrangement can guide the opening that passes through this housing from the light beam of this light source via the reflection of this first reflecting surface, behind the modulation of this light beam via bar code on the article to be scanned, can be by this this light directing arrangement of opening reflected back, and this photoconduction leading-in device can guide to the light beam of this process modulation this optical sensor, so that be converted to corresponding modulating signal, and subsequent demodulation is corresponding barcode signal.
2. bar code scanner as claimed in claim 1, wherein this bar code scanner comprises the place ahead that one first collector lens is arranged at this light source, is used for the light beam from this light source is focused to this first reflecting surface.
3. bar code scanner as claimed in claim 2, wherein this first collector lens is the part for this photoconduction leading-in device.
4. bar code scanner as claimed in claim 3, wherein this photoconduction leading-in device is to be made into integration by plastic cement injection moulding.
5. bar code scanner as claimed in claim 1, wherein this bar code scanner also comprises one second collector lens and is arranged between this photoconduction leading-in device and this optical sensor, be used for from the beam condenser of this photoconduction leading-in device to this optical sensor.
6. bar code scanner as claimed in claim 5, wherein this photoconduction leading-in device is to be made into integration by plastic cement injection moulding, and also comprise one fixedly microscope base to be used for placing and fixing this second collector lens.
7. bar code scanner as claimed in claim 1, wherein this bar code scanner also comprises the front end that an occluder is arranged at this optical sensor, is used for limiting the range size of the light beam that is incident in this optical sensor.
8. bar code scanner as claimed in claim 7, wherein this occluder also makes the light beam beginning of a certain predetermined direction incident be received by this optical sensor, to reduce the noise that this optical sensor is received.
9. bar code scanner as claimed in claim 1, wherein this light source is to be a light emitting diode.
10. bar code scanner as claimed in claim 1, wherein this opening is the front end that is arranged at this long strip type housing.
11. bar code scanner as claimed in claim 1, wherein this opening is the bottom that is arranged at this long strip type housing, and this photoconduction leading-in device also includes one second reflecting surface and one the 3rd reflecting surface, this first reflecting surface is that the beam reflection of will advance along this horizontal direction is to a vertical direction vertical with this horizontal direction, this second reflecting surface then can reflex to this light beam the bottom end opening of this housing obliquely, and behind the modulation via this bar code, be incident to the 3rd reflecting surface along this vertical direction, the 3rd reflecting surface then can will be somebody's turn to do the beam reflection of process modulation to this horizontal direction, to be incident to this optical sensor.
12. a hand held bar code scanner is used for scanning bar code on the article to produce a barcode signal in the mode of holding, this scanister includes:
The one strip housing that is fit to hold, it includes an opening and passes through for light beam;
One single circuit board is arranged in this housing, and this circuit board includes:
One light source is arranged at the opening part of this housing, is used for sending a uniform beam, to scan the bar code on these article;
One optical sensor is used for receiving the light beam once crossing modulation, and is converted to corresponding modulating signal; And
One demodulator circuit is to receive the modulating signal from this optical sensor, to be demodulated into corresponding barcode signal;
Wherein via the light beam behind this bar code modulation, meeting is by this this optical sensor of opening reflected back, so that be converted to corresponding modulating signal, and subsequent demodulation is corresponding barcode signal.
13. bar code scanner as claimed in claim 12, wherein this bar code scanner comprises the place ahead that one first collector lens is arranged at this light source, is used for the light beam from this light source is focused to bar code on these article to be scanned.
14. bar code scanner as claimed in claim 12, wherein this bar code scanner also comprises one second collector lens and is arranged at before this optical sensor, is used for reflection from the modulation beam condenser of this bar code to this optical sensor.
15. bar code scanner as claimed in claim 14, wherein this bar code scanner also comprises an occluder and is arranged between this second collector lens and this optical sensor, is used for limiting the range size of the light beam that is incident in this optical sensor.
16. bar code scanner as claimed in claim 15, wherein this occluder also makes the light beam beginning of a certain predetermined direction incident be received by this optical sensor, to reduce the noise that this optical sensor is received.
17. bar code scanner as claimed in claim 14, wherein also comprise one fixedly microscope base to be used for placing and fixing this second collector lens.
18. bar code scanner as claimed in claim 12, wherein this light source is to be a light emitting diode.
19. bar code scanner as claimed in claim 12, wherein this opening is the front end that is arranged at this long strip type housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00117626 CN1325084A (en) | 2000-05-22 | 2000-05-22 | Bar code scanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00117626 CN1325084A (en) | 2000-05-22 | 2000-05-22 | Bar code scanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1325084A true CN1325084A (en) | 2001-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00117626 Pending CN1325084A (en) | 2000-05-22 | 2000-05-22 | Bar code scanner |
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| Country | Link |
|---|---|
| CN (1) | CN1325084A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327384C (en) * | 2003-10-16 | 2007-07-18 | 电装波动株式会社 | Apparatus for optically reading target |
| CN100371941C (en) * | 2002-10-15 | 2008-02-27 | 讯宝科技公司 | Imagingbar code reader with movable light beam simulation |
| CN102063605A (en) * | 2009-07-06 | 2011-05-18 | 宽三科技股份有限公司 | Barcode reading device |
-
2000
- 2000-05-22 CN CN 00117626 patent/CN1325084A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371941C (en) * | 2002-10-15 | 2008-02-27 | 讯宝科技公司 | Imagingbar code reader with movable light beam simulation |
| CN1327384C (en) * | 2003-10-16 | 2007-07-18 | 电装波动株式会社 | Apparatus for optically reading target |
| CN102063605A (en) * | 2009-07-06 | 2011-05-18 | 宽三科技股份有限公司 | Barcode reading device |
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| SE01 | Entry into force of request for substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |