CN104239841A - Two-dimension code reader provided with view finding unit and reading system and method - Google Patents
Two-dimension code reader provided with view finding unit and reading system and method Download PDFInfo
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- CN104239841A CN104239841A CN201410395168.7A CN201410395168A CN104239841A CN 104239841 A CN104239841 A CN 104239841A CN 201410395168 A CN201410395168 A CN 201410395168A CN 104239841 A CN104239841 A CN 104239841A
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Abstract
The invention provides a two-dimension code reader provided with a view finding unit and a reading system and method. The two-dimension code reader collects target code images in a contact mode, and comprises a shell (1), an illumination unit (2), a code collecting unit (3) and the view finding unit (4), wherein the code collecting unit (3) comprises a code collecting window (31), a semi-reflective semi-permeable mirror (32) and an imaging sensor (33), and the distance between the imaging sensor (33) and the code collecting window (31) is the focal distance of the code collecting unit (3). The two-dimension code reader has the advantages that the view finding unit is arranged, so that view finding images can be observed in real time; when the target code images are collected, view finding can be carried out through naked eyes; collecting accuracy is improved, the decoding rate is improved, and work efficiency is fully improved; the view finding unit and the code collecting unit share one illumination system, so that cost of the whole reader is reduced; compactness of the whole structure is improved, the size is reduced, and portability is further improved.
Description
Technical field
The present invention relates to a kind of recognizer, be specifically related to a kind of two-dimensional code identifier, recognition system and the method with viewfinder unit.
Background technology
Quick Response Code is also referred to as two-dimensional bar code or two-dimensional bar, and be use several representation of geometric object word numerical informations corresponding with scale-of-two, information is converted into binary geometrical body, and generates a matrix diagram, namely this matrix diagram is Quick Response Code.After Quick Response Code generates, the method obtaining the specific data information recorded in Quick Response Code is generally: adopt two-dimensional code identifier to read image in 2 D code, then the image in 2 D code read is transferred to host computer by two-dimensional code identifier, host computer is decoded to the image in 2 D code received, thus obtains the specific data information recorded in Quick Response Code.Therefore, how clear for two-dimensional code identifier, collect image in 2 D code fast, for simplification subsequent decoding process, to improve decoding efficiency very crucial.
At present, two-dimensional code identifier common on market, its design feature comprises: handle and the housing be connected with handle, arrange on the top of housing and adopt a yard window, at the inner chamber of housing, imageing sensor is set, arrange USB interface in housing sidewall, the output terminal of imageing sensor and USB interface are electrically connected; Its using method is: the hand-held handle of user, directly observed by naked eyes, collected Quick Response Code is made to be positioned at the correct position adopting yard window, and, in order to collect Quick Response Code image clearly, also need constantly to change distance between imageing sensor and collected Quick Response Code by experience, be finally positioned at by imageing sensor collection the image in 2 D code adopting yard window again.
But, along with the development of planar bar code technology, in prior art, constantly there is the Quick Response Code that some code-points are very little, such as rich code, for one point shakes formula Quick Response Code, compared with existing conventional Quick Response Code, have the following advantages: (1) code capacity is large; (2) fouling resistance ability is strong; (3) error correcting capability is strong: rich code adopts the mathematics error correction of world advanced person theoretical, adopts the normal Reed-Solomon error correction algorithm adopted in space information transmission, makes the error correcting capability of rich code to reach 30%.(4) easily to make and cost is low: utilize the printing technique such as existing dot matrix, laser, ink-jet, temperature-sensitive/hot transfer printing, clip making machine, at paper, card, PVC, even metal surface can be printed off rich code.Expense increased thus is only the cost of ink, and is only equivalent to 5% of the conventional Quick Response Code of same capacity by ink amount.(5) rich code sign shape can customize arbitrarily: rich code can be printed in various character pattern, can customize arbitrarily as required, does not need to be printed as regular shape.(6) good looking appearance, visual impact is little: namely the original intention of rich code design considers good looking appearance, and visual impact is little, can be printed on various packaging pattern and not affect the attractive in appearance of pattern.(7) difficulty is copied: rich code, by having the methods such as the arrangement of the code-point of incidence relation, high-resolution requirement, improves the threshold copied, is more suitable for Application in Anti-counterfeiting.(8) support tiling: rich code can tile any size, can be used for the full width printing of packing.The generting machanism of rich code can with reference to following two disclosed patents: 201110412821.2 and 201110414555.7.Therefore, win the Contact Two-dimensional codes such as code to have broad application prospects.
But, when using in prior art the two-dimensional code identifier collection generally used to win the very little Quick Response Code of the code-points such as code, need repeatedly to attempt, distance between continuous change imageing sensor and collected Quick Response Code, can ensure to collect image in 2 D code clearly, there is the problem that the collecting efficiency of image in 2 D code is low, and then have impact on subsequent decoding rate.
Therefore, develop a recognizer being specifically designed to the very little Quick Response Code of code-point, improve the efficiency that image in 2 D code gathers, have important practical significance.
Summary of the invention
For the defect that prior art exists, the invention provides a kind of two-dimensional code identifier, recognition system and the method with viewfinder unit, in order to solve the problem.
The technical solution used in the present invention is as follows:
The invention provides a kind of two-dimensional code identifier with viewfinder unit, comprising: housing (1), lighting unit (2), adopt a yard unit (3) and viewfinder unit (4); Wherein, adopt a yard unit (3) described in comprise and adopt a yard window (31), half-reflecting half mirror (32) and imaging sensor (33);
The inner chamber of described housing (1) is two independently chambers by divides, is respectively the first chamber (5) and the second chamber (6); Between described first chamber (5) and described second chamber (6), through hole (7) is set;
A described yard window (31) of adopting is arranged on the top of described housing (1) and is communicated with the top of described second chamber (6); Described imaging sensor (33) is fixed on the inside of described second chamber (6), and, described in adopt a yard window (31) and described imaging sensor (33) and all arrange with plane-parallel; Described imaging sensor (33) to described in adopt distance between a yard window (31) for described in adopt the focal length of a yard unit (3);
Described lighting unit (2) comprises at least one luminescence unit (8); The circuit board that described luminescence unit (8) is arranged on described imaging sensor (33) place adopts a yard window (31) towards described, for illuminating the code figure that will gather;
Adopt adopting on yard passage between a yard window (31) to described imaging sensor (33) described described half-reflecting half mirror (32) is installed, described half-reflecting half mirror (32) is obliquely installed with surface level is angled, so that the light be reflected back from code figure is after described half-reflecting half mirror (32), described viewfinder unit (4) is entered by described through hole (7) after part light reflection, described imaging sensor (33) is arrived after another part light refraction, at the reflected light path of described half-reflecting half mirror (32) and the intersection location of described demarcation strip, described through hole (7) is set, and, the width of described through hole (7) is greater than the range of receiving of the catoptron (41) being positioned at viewfinder unit (4),
Described viewfinder unit (4) comprises catoptron (41) and form (42); Described catoptron (41) is arranged on the inside of described first chamber (5), and, described catoptron (41) relative level face tilt is arranged, and reflection kernel and the described half-reflecting half mirror (32) of described catoptron (41) are positioned at same level height; Described form (42) is arranged on the bottom of described housing (1) and is communicated with described first chamber (5), and described form (42) is positioned on the reflection paths of described catoptron (41).
Preferably, luminescence unit described in each (8) along described imaging sensor (33) circumference ringwise set-up mode evenly arrange.
Preferably, described luminescence unit (8) is for sending the LED of white light, blue light or ruddiness.
Preferably, described through hole (7) is loudspeaker opening shape, and it comprises the first opening and the second opening; Wherein, the diameter of described first opening is greater than the diameter of described second opening; Described first opening is towards described second chamber (6); Described second opening is towards described first chamber (5); Between described second opening, be provided with lens combination at described first opening, this lens combination is used for the light line width reducing to reflect from described half-reflecting half mirror (32).
Preferably, described half-reflecting half mirror (32) is obliquely installed horizontal by miter angle; Described catoptron (41) and described half-reflecting half mirror (32) be arranged in parallel.
Preferably, described lighting unit (2) also comprises light intensity equalizer and is arranged on the outside manual adjustment knob of described housing (1); Described manual adjustment knob and described light intensity equalizer link, and described light intensity equalizer is connected with luminescence unit described in each, for regulating the luminous intensity of luminescence unit described in each.
Preferably, described housing (1) is also provided with the communication interface for being connected with host computer; Described communication interface is connected with described imaging sensor (33);
Described viewfinder unit (4) also comprises lens combination (43); Described lens combination (43) is arranged on inner close described form (42) one end of described first chamber (5), and described lens combination (43) is positioned on the reflection paths of described catoptron (41).
Preferably, described two-dimensional code identifier also comprises power supply unit; Described power supply unit is connected with described lighting unit (2) and described imaging sensor (33) respectively.
Preferably, described power supply unit is for being arranged on the lithium battery in described housing (1) internal cell storehouse; Or described power supply unit comprises: power supply adaptor and the power adaptor interface be arranged on described housing (1).
The present invention also provides a kind of two dimension code reading system with viewfinder unit, comprises host computer and the above-mentioned two-dimensional code identifier with viewfinder unit; Described host computer is connected by communication interface with the described two-dimensional code identifier with viewfinder unit.
The present invention also provides a kind of two dimension code reading method with viewfinder unit, comprises the following steps:
S1, for the Quick Response Code code-point feature needing to be identified, design has the two-dimensional code identifier of viewfinder unit, makes imaging sensor (33) to the distance of adopting between a yard window (31) be optimum distance for gathering the Quick Response Code code-point be identified;
S2, makes the top of two-dimensional code identifier cover and is identified on Quick Response Code, if initial time, the local code-point being identified Quick Response Code is positioned to be adopted on a yard window (31); Described two-dimensional code identifier powers on, and the light that luminescence unit sends arrives local code-point after adopting a yard window (31); The light that local code-point reflects arrives half-reflecting half mirror (32) afterwards by adopting a yard window (31); Half-reflecting half mirror (32) reflects a part of light received, and the light after refraction is imaged sensor (33) collection; Half-reflecting half mirror (32) reflects another part light received, and the light after reflection is arrived by through hole (7) and is positioned on the catoptron (41) of the first chamber (5); Under the reflex of catoptron (41), light moves on along reflection paths, and arrive human eye eventually through form (42), so far, eye-observation adopts the code-point situation of a yard unit (3) to being positioned at;
S3, the code-point situation of human eye by observing, moving 2 D code recognizer, adjusts the position of target code-point gathered, until make collected Quick Response Code be positioned to adopt the best region of a yard unit (3);
S4, due to collected Quick Response Code with adopt a yard unit (3) close contact, collected Quick Response Code equals to adopt the distance of a yard unit (3) to imaging sensor (33) to the distance of imaging sensor (33), be focal length, then: collected Quick Response Code blur-free imaging on imaging sensor (33), imaging sensor (33) by the image in 2 D code clearly that collects by communications interface transmission to host computer.
Preferably, in S2, under the reflex of catoptron (41), light moves on along reflection paths, arrives human eye be specially eventually through form (42):
Under the reflex of catoptron (41), light moves on along reflection paths, after the amplification of scioptics group (43), arrives human eye eventually through form (42).
Two-dimensional code identifier, recognition system and the method with viewfinder unit provided by the invention, has the following advantages:
(1) owing to being provided with viewfinder unit, can Real Time Observation viewfinder image: when gathering object code figure, can be found a view by naked eyes; Whether, when host computer is decoded, also can Real Time Observation be moved to recognizer, acquisition window whether still just to object code figure, thus increases the accuracy rate gathered, and improves decoding rate, increases work efficiency comprehensively;
(2) viewfinder unit and adopt a set of illuminator of yard units shared, had both saved integral device cost; Turn increase integrally-built compactedness, reduce volume, thus further increase its portability.
Accompanying drawing explanation
Fig. 1 is the external structure schematic diagram with the two-dimensional code identifier of viewfinder unit provided by the invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the inner structure schematic diagram with the two-dimensional code identifier of viewfinder unit provided by the invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail:
As Figure 1-3, the invention provides a kind of two-dimensional code identifier with viewfinder unit, during use, for object code figure code-point situation, being designed to image-position sensor to the distance of adopting yard window is imaging system focal length, then, to adopt yard window direct coverage goal code figure, object code figure is the focal length of imaging system to the distance of imaging sensor, therefore, do not need repeatedly to attempt focus operation, can be simple and quick collect object code figure clearly.In addition, owing to adopting yard window direct coverage goal code figure, extraneous natural light cannot illuminate object code figure, and therefore, lighting unit and viewfinder unit have been set up in two-dimensional code identifier inside, by lighting unit, for whole recognizer throws light on; By viewfinder unit, ensure the accuracy gathering object code figure.
Concrete, comprising: housing 1, lighting unit 2, adopt yard unit 3 and viewfinder unit 4; Below the design feature of these four unit is introduced in detail:
(1) housing
The inner chamber of housing 1 is two independently chambers by divides, is respectively the first chamber 5 and the second chamber 6; Between first chamber 5 and the second chamber 6, through hole 7 is set; Housing 1 is also provided with the communication interface for being connected with host computer; Communication interface is connected with imaging sensor 33.
(2) a yard unit is adopted
Adopt yard unit 3 to comprise and adopt yard window 31, half-reflecting half mirror 32 and imaging sensor 33;
Adopt yard window 31 be arranged on the top of housing 1 and be communicated with the top of the second chamber 6, the openings of sizes of adopting yard window is arranged according to actual needs flexibly; Imaging sensor 33 is fixed on the inside of the second chamber 6, and, adopt yard window 31 and all arrange with plane-parallel with imaging sensor 33; Imaging sensor 33 is adopt the focal length of yard unit 3 to the distance of adopting between yard window 31;
In addition, install half-reflecting half mirror 32 adopting adopting on yard passage between yard window 31 to imaging sensor 33, half-reflecting half mirror 32 is obliquely installed with surface level is angled; At the reflected light path of half-reflecting half mirror 32 and the intersection location of demarcation strip, through hole 7 is set; The Main Function of half-reflecting half mirror 32 for: be read the light that Quick Response Code reflects and arrive half-reflecting half mirror 32 after adopting yard window 31; Half-reflecting half mirror 32 reflects a part of light received, and the light after refraction is imaged sensor 33 and gathers; Half-reflecting half mirror 32 reflects another part light received, and the light after reflection is arrived by through hole 7 and is positioned on the catoptron 41 of the first chamber 5.The width of through hole 7 needs the range of receiving slightly larger than the catoptron 41 being positioned at viewfinder unit 4.By regulating the parameters such as the lens combination of installing in the diameter of through hole 7, shape and through hole 7, the problem that adjustment enters into the light luminance of the first chamber 5 can be reached.To find a view effect for improving viewfinder unit, improve the light luminance entering into the first chamber 5, through hole 7 can be designed as loudspeaker opening shape, and it comprises the first opening and the second opening; Wherein, the diameter of the first opening is greater than the diameter of the second opening; First opening is towards the second chamber 6; Second opening is towards the first chamber 5.In addition, between the second opening, lens combination is installed at the first opening, to reduce the width of the light reflected from half-reflecting half mirror 32, to meet the compact profile demand of two-dimensional code identifier.
(3) lighting unit
Lighting unit 2 comprises at least one luminescence unit 8; On the circuit board that luminescence unit 8 is arranged on imaging sensor 33 place and towards adopting yard window 31, for illuminating object code figure;
Be radiated under being read Quick Response Code for making uniform light, thus simplify later stage decoding complex degree, improve image in 2 D code acquisition quality, each luminescence unit 8 can along imaging sensor 33 circumference ringwise set-up mode evenly arrange, and, for preventing light color to the interference gathering image, luminescence unit 8 can adopt the visible ray of a certain color according to specific needs, such as: luminescence unit adopts the LED sending white light, ruddiness or blue light.
In addition, lighting unit 2 also comprises light intensity equalizer and is arranged on the manual adjustment knob of housing 1 outside; Manual adjustment knob and light intensity equalizer link, and light intensity equalizer is connected with each luminescence unit, for regulating the luminous intensity of each luminescence unit.By light intensity equalizer, according to collected Quick Response Code code-point feature, the light of different brightness can be regulated, improve image acquisition quality further.
(4) viewfinder unit
Viewfinder unit 4 be mainly for eye-observation to passage of finding a view, comprise catoptron 41 and form 42; Catoptron 41 is arranged on the inside of the first chamber 5, and catoptron 41 relatively half-reflecting half mirror 32 be arranged in parallel.Reflection kernel and the half-reflecting half mirror 32 of catoptron 41 are positioned at same level height, thus can receive the light transmitted by through hole accurately; Form 42 is arranged on the bottom of housing 1 and is communicated with the first chamber 5, and form 42 is positioned on the reflection paths of catoptron 41.
Viewfinder unit 4 also comprises lens combination 43; Lens combination 43 is arranged on close form 42 one end of the first chamber 5 inside, and lens combination 43 is positioned on the reflection paths of catoptron 41.
Concrete, due to when hand-held recognizer, certain distance is had between human eye and form, add the restriction of structure, the perforate of form is very little, in order to ensure that human eye sees object code figure clearly by viewfinder unit, lens combination is installed additional in the one end near form, fundamental purpose is the image that the viewfinder window that magnifying reflecting mirror reflects collects, and at eye-observation place blur-free imaging, also ensure that the compactedness of structure simultaneously.
Two-dimensional code identifier also comprises power supply unit; Power supply unit is connected with lighting unit 2 and imaging sensor 33 respectively.Power supply unit can adopt two kinds of mounting meanss: (1) is for being arranged on the lithium battery in housing 1 internal cell storehouse; (2) power supply unit comprises: power supply adaptor and the power adaptor interface be arranged on housing 1.
Present invention also offers and a kind of there is the two dimension code reading system of adopting yard window, comprise host computer and the above-mentioned two-dimensional code identifier with viewfinder unit; Host computer is connected by communication interface with the two-dimensional code identifier with viewfinder unit.The object code figure collected is submitted to host computer by two-dimensional code identifier, and host computer carries out decoding computing to object code figure, thus reads the true meaning that object code figure comprises.
Present invention also offers a kind of reading method applying the two-dimensional code identifier of viewfinder unit, comprise the following steps:
S1, for needing the Quick Response Code code-point feature that is identified, design has the two-dimensional code identifier of viewfinder unit, makes imaging sensor 33 to the distance of adopting between yard window 31 be optimum distance for gathering the Quick Response Code code-point be identified;
S2, makes the top of two-dimensional code identifier cover and is identified on Quick Response Code, if initial time, the local code-point being identified Quick Response Code is positioned to be adopted on yard window 31; Two-dimensional code identifier powers on, and the light that luminescence unit sends arrives local code-point after adopting yard window 31; The light that local code-point reflects arrives half-reflecting half mirror 32 after adopting yard window 31; Half-reflecting half mirror 32 reflects a part of light received, and the light after refraction is imaged sensor 33 and gathers; Half-reflecting half mirror 32 reflects another part light received, and the light after reflection is arrived by through hole 7 and is positioned on the catoptron 41 of the first chamber 5; Under the reflex of catoptron 41, light moves on along reflection paths, if be provided with lens combination 43, after the amplification of then scioptics group 43, arrive human eye eventually through form 42, so far, eye-observation is to being positioned at the code-point situation of adopting yard unit 3; Certainly,
S3, the code-point situation of human eye by observing, moving 2 D code recognizer, adjusts the position of target code-point gathered, until make collected Quick Response Code be positioned to adopt the best region of yard unit 3;
S4, due to collected Quick Response Code with adopt yard unit 3 close contact, collected Quick Response Code equals to adopt the distance of yard unit 3 to imaging sensor 33 to the distance of imaging sensor 33, be focal length, then: collected Quick Response Code blur-free imaging on imaging sensor 33, imaging sensor 33 by the image in 2 D code clearly that collects by communications interface transmission to host computer.
There is a kind of screen in prior art to find a view method, be specially: two-dimensional code identifier is connected with host computer, startup screen view finding function on host computer, by screen being observed the information the such as whether image in 2 D code collected is complete, if imperfect, then manual moving 2 D code recognizer, by constantly adjusting the position of Quick Response Code in screen be identified, thus reaches the object gathering complete image in 2 D code clearly.This kind of method has following problem: when after startup screen view finding function collection to complete image in 2 D code clearly, first host computer must close screen view finding function, restart decoding function to decode, if and two-dimensional code identifier is moved when host computer is decoded, can cause occurring deviation between the image in 2 D code of finding a view in advance and the image in 2 D code of reality, and then cause decoding error.Object code figure is less, and the error caused by this kind of movement is more not easy to ignore, thus adds follow-up decoding effort difficulty, reduces the work efficiency of whole collection and decoding.
And by two-dimensional code identifier and the method with viewfinder unit provided by the invention, increase viewfinder unit, when gathering object code figure, directly found a view by naked eyes; When host computer is decoded, both made recognizer be moved, whether the image that can be collected by form Real Time Observation is object code figure, and adjust accordingly according to the observation, thus both increased the accuracy rate of collection, turn improve host computer decoding accuracy, increase work efficiency comprehensively.Avoid because collection image exists deviation cause the phenomenons such as decoding error.
In sum, two-dimensional code identifier, recognition system and the method with viewfinder unit provided by the invention, has the following advantages:
(1) owing to being provided with viewfinder unit, can Real Time Observation viewfinder image: when gathering object code figure, can be found a view by naked eyes; Whether, when host computer is decoded, also can Real Time Observation be moved to recognizer, acquisition window whether still just to object code figure, thus increases the accuracy rate gathered, and improves decoding rate, increases work efficiency comprehensively;
(2) viewfinder unit and adopt a set of illuminator of yard units shared, had both saved integral device cost; Turn increase integrally-built compactedness, reduce volume, thus further increase its portability.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should look protection scope of the present invention.
Claims (10)
1. there is a two-dimensional code identifier for viewfinder unit, it is characterized in that, comprising: housing (1), lighting unit (2), adopt a yard unit (3) and viewfinder unit (4); Wherein, adopt a yard unit (3) described in comprise and adopt a yard window (31), half-reflecting half mirror (32) and imaging sensor (33);
The inner chamber of described housing (1) is two independently chambers by divides, is respectively the first chamber (5) and the second chamber (6); Between described first chamber (5) and described second chamber (6), through hole (7) is set;
A described yard window (31) of adopting is arranged on the top of described housing (1) and is communicated with the top of described second chamber (6); Described imaging sensor (33) is fixed on the inside of described second chamber (6), and, described in adopt a yard window (31) and described imaging sensor (33) and all arrange with plane-parallel; Described imaging sensor (33) to described in adopt distance between a yard window (31) for described in adopt the focal length of a yard unit (3);
Described lighting unit (2) comprises at least one luminescence unit (8); The circuit board that described luminescence unit (8) is arranged on described imaging sensor (33) place adopts a yard window (31) towards described, for illuminating the code figure that will gather;
Adopt adopting on yard passage between a yard window (31) to described imaging sensor (33) described described half-reflecting half mirror (32) is installed, described half-reflecting half mirror (32) is obliquely installed with surface level is angled, so that the light be reflected back from code figure is after described half-reflecting half mirror (32), described viewfinder unit (4) is entered by described through hole (7) after part light reflection, described imaging sensor (33) is arrived after another part light refraction, at the reflected light path of described half-reflecting half mirror (32) and the intersection location of described demarcation strip, described through hole (7) is set, and, the width of described through hole (7) is greater than the range of receiving of the catoptron (41) being positioned at viewfinder unit (4),
Described viewfinder unit (4) comprises catoptron (41) and form (42); Described catoptron (41) is arranged on the inside of described first chamber (5), and, described catoptron (41) relative level face tilt is arranged, and reflection kernel and the described half-reflecting half mirror (32) of described catoptron (41) are positioned at same level height; Described form (42) is arranged on the bottom of described housing (1) and is communicated with described first chamber (5), and described form (42) is positioned on the reflection paths of described catoptron (41).
2. the two-dimensional code identifier with viewfinder unit according to claim 1, is characterized in that, luminescence unit described in each (8) along described imaging sensor (33) circumference ringwise set-up mode evenly arrange;
Described luminescence unit (8) is for sending the LED of white light, blue light or ruddiness.
3. the two-dimensional code identifier with viewfinder unit according to claim 1, is characterized in that, described through hole (7) is loudspeaker opening shape, and it comprises the first opening and the second opening; Wherein, the diameter of described first opening is greater than the diameter of described second opening; Described first opening is towards described second chamber (6); Described second opening is towards described first chamber (5); Between described second opening, be provided with lens combination at described first opening, this lens combination is used for the light line width reducing to reflect from described half-reflecting half mirror (32).
4. the two-dimensional code identifier with viewfinder unit according to claim 1, is characterized in that, described half-reflecting half mirror (32) is obliquely installed horizontal by miter angle; Described catoptron (41) and described half-reflecting half mirror (32) be arranged in parallel.
5. the two-dimensional code identifier with viewfinder unit according to claim 1, is characterized in that, described lighting unit (2) also comprises light intensity equalizer and is arranged on the outside manual adjustment knob of described housing (1); Described manual adjustment knob and described light intensity equalizer link, and described light intensity equalizer is connected with luminescence unit described in each, for regulating the luminous intensity of luminescence unit described in each.
6. the two-dimensional code identifier with viewfinder unit according to claim 1, is characterized in that, described housing (1) is also provided with the communication interface for being connected with host computer; Described communication interface is connected with described imaging sensor (33);
Described viewfinder unit (4) also comprises lens combination (43); Described lens combination (43) is arranged on inner close described form (42) one end of described first chamber (5), and described lens combination (43) is positioned on the reflection paths of described catoptron (41).
7. the two-dimensional code identifier with viewfinder unit according to claim 1, is characterized in that, described two-dimensional code identifier also comprises power supply unit; Described power supply unit is connected with described lighting unit (2) and described imaging sensor (33) respectively.
8. the two-dimensional code identifier with viewfinder unit according to claim 7, is characterized in that, described power supply unit is for being arranged on the lithium battery in described housing (1) internal cell storehouse; Or described power supply unit comprises: power supply adaptor and the power adaptor interface be arranged on described housing (1).
9. there is a two dimension code reading system for viewfinder unit, it is characterized in that, comprise the two-dimensional code identifier with viewfinder unit described in host computer and any one of claim 1-8; Described host computer is connected by communication interface with the described two-dimensional code identifier with viewfinder unit.
10. there is a two dimension code reading method for viewfinder unit, it is characterized in that, comprise the following steps:
S1, for the Quick Response Code code-point feature needing to be identified, design has the two-dimensional code identifier of viewfinder unit, makes imaging sensor (33) to the distance of adopting between a yard window (31) be optimum distance for gathering the Quick Response Code code-point be identified;
S2, makes the top of two-dimensional code identifier cover and is identified on Quick Response Code, if initial time, the local code-point being identified Quick Response Code is positioned to be adopted on a yard window (31); Described two-dimensional code identifier powers on, and the light that luminescence unit sends arrives local code-point after adopting a yard window (31); The light that local code-point reflects arrives half-reflecting half mirror (32) afterwards by adopting a yard window (31); Half-reflecting half mirror (32) reflects a part of light received, and the light after refraction is imaged sensor (33) collection; Half-reflecting half mirror (32) reflects another part light received, and the light after reflection is arrived by through hole (7) and is positioned on the catoptron (41) of the first chamber (5); Under the reflex of catoptron (41), light moves on along reflection paths, and arrive human eye eventually through form (42), so far, eye-observation adopts the code-point situation of a yard unit (3) to being positioned at;
S3, the code-point situation of human eye by observing, moving 2 D code recognizer, adjusts the position of target code-point gathered, until make collected Quick Response Code be positioned to adopt the best region of a yard unit (3);
S4, due to collected Quick Response Code with adopt a yard unit (3) close contact, collected Quick Response Code equals to adopt the distance of a yard unit (3) to imaging sensor (33) to the distance of imaging sensor (33), be focal length, then: collected Quick Response Code blur-free imaging on imaging sensor (33), imaging sensor (33) by the image in 2 D code clearly that collects by communications interface transmission to host computer;
Wherein, in S2, under the reflex of catoptron (41), light moves on along reflection paths, arrives human eye be specially eventually through form (42):
Under the reflex of catoptron (41), light moves on along reflection paths, after the amplification of scioptics group (43), arrives human eye eventually through form (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410395168.7A CN104239841B (en) | 2014-08-12 | 2014-08-12 | There is two-dimensional code identifier, recognition system and the method for viewfinder unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410395168.7A CN104239841B (en) | 2014-08-12 | 2014-08-12 | There is two-dimensional code identifier, recognition system and the method for viewfinder unit |
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| CN104239841A true CN104239841A (en) | 2014-12-24 |
| CN104239841B CN104239841B (en) | 2017-03-15 |
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| CN201410395168.7A Active CN104239841B (en) | 2014-08-12 | 2014-08-12 | There is two-dimensional code identifier, recognition system and the method for viewfinder unit |
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| CN107124533A (en) * | 2016-02-25 | 2017-09-01 | 讯宝科技有限责任公司 | The module or arrangement and method of target are read by picture catching |
| CN108197517A (en) * | 2018-02-02 | 2018-06-22 | 深圳市雄帝科技股份有限公司 | It can image map code scanner device and scan code system |
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| CN104239841B (en) | 2017-03-15 |
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