CN106056025A - Light path structure and coding scanning and reading method - Google Patents
Light path structure and coding scanning and reading method Download PDFInfo
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- CN106056025A CN106056025A CN201610547953.9A CN201610547953A CN106056025A CN 106056025 A CN106056025 A CN 106056025A CN 201610547953 A CN201610547953 A CN 201610547953A CN 106056025 A CN106056025 A CN 106056025A
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- mirror
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10554—Moving beam scanning
- G06K7/10594—Beam path
- G06K7/10683—Arrangement of fixed elements
- G06K7/10702—Particularities of propagating elements, e.g. lenses, mirrors
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/02—Catoptric systems, e.g. image erecting and reversing system
- G02B17/06—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror
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- Computer Vision & Pattern Recognition (AREA)
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Abstract
The invention discloses a light path structure and a coding scanning and reading method. The light path structure comprises a curved mirror, a rotary four-side mirror, a reflection member and a reception device, wherein the reflection member comprises five flat mirrors or six flat mirrors, incident laser light irradiates the rotary four-side mirror, angles of four sides of the rotary four-side mirror are different, the incident laser is reflected to the reflection member, the reflection light irradiates through the reflection member to a code bar, inverse reflection light is formed, the reflection member is irradiated, the inverse reflection light is reflected by the reflection member to the rotary four-side mirror, the inverse reflection light is reflected by the rotary four-side mirror to the curved mirror, and the inverse reflection light is focused by the curved mirror to the reception device. According to the light path structure, light path design is improved, outgoing light forms multi-line uniform grids, a scanning scope increases, code reading capability of each line increases, work efficiency is high, the structure is simple, and the light path structure is convenient to use.
Description
Technical field
The present invention relates to scanning device technical field, particularly relate to a kind of light channel structure and barcode scanning reading code method thereof.
Background technology
At present, on market, the scanning device of high-quality is all import, and the light channel structure design of domestic scanner can only be entered
The scanning of row single line, the scope of scanning is smaller, efficiency is low, uses quite inconvenience.
Summary of the invention
The main object of the present invention is to provide a kind of light channel structure and barcode scanning reading code method thereof, it is intended to solve sweeping of single line
Scope of retouching is little, efficiency is low, awkward problem.
For achieving the above object, the light channel structure that the present invention proposes, for being modulated to multi-thread shoot laser by incident laser
Carry out barcode scanning,
At least include: curved mirror, the four sides mirror of rotation, reflecting element and reception device；
Described reflecting element includes five pieces of plane mirrors or six pieces of plane mirrors；
Wherein, incident laser radiation is to the four sides mirror of described rotation；
The angle in four faces of the four sides mirror of described rotation is different, and incident laser reflexes to described reflecting element；
Reflection light is irradiated to bar code by described reflecting element, forms retrodirective reflection light, is irradiated to described reflecting element；
Described reflecting element is by the four sides mirror of retrodirective reflection luminous reflectance to described rotation；
The four sides mirror of described rotation by retrodirective reflection luminous reflectance to described curved mirror；
Retrodirective reflection luminous reflectance is focused on described reception device by described curved mirror.
Further, also to include that signal amplification board and a laser head, described reception device are installed on described for this light channel structure
On signal amplification board, described incident laser is penetrated by described laser head.
Further, this light channel structure also includes that the first plane mirror, described first plane mirror are positioned in described curved mirror
The heart, described incident laser is through the four sides mirror of the first plane mirror reflected illumination to described rotation.
Further, the center of described curved mirror is provided with perforate, and described incident laser is irradiated to described through described perforate
The four sides mirror rotated.
Further, this light channel structure also includes the second plane mirror, and described incident laser is through described second plane mirror reflection
The four sides mirror of described rotation it is irradiated to afterwards through described perforate.
Further, the angle of the normal direction of the base plane of the normal direction of described five pieces of plane mirrors and described mounting bracket is successively
Being 42.9 °, 43.8 °, 41.6 °, 43.8 °, 42.9 °, the normal direction angle of described adjacent two eyeglasses of five pieces of plane mirrors is followed successively by
25.7°、26.4°、26.4°、25.7°；The normal direction of the normal direction of described six pieces of plane mirrors and the base plane of described mounting bracket
Angle is followed successively by 42.1 °, 43.5 °, 41.4 °, 41.4 °, 43.5 °, 42.1 °, the normal direction of described adjacent two eyeglasses of six pieces of plane mirrors
Angle is followed successively by 22.1 °, 18.0 °, 16.6 °, 18.0 °, 22.1 °.
Further, described reflecting element reflective light formed the grid that barcode scanning region is 20 lines or the grid of 24 lines.
The present invention also provides for a kind of barcode scanning reading code method of light channel structure, comprises the following steps:
Incident laser is modulated to 20 lines or the grid of 24 lines by light channel structure；
The grid utilizing described 20 lines or 24 lines is irradiated in bar code carry out barcode scanning, forms retrodirective reflection light；
Receive device and receive described retrodirective reflection light, complete follow-up reading code.
Further, incident laser is modulated to the step of the grid of 20 lines or 24 lines by described light channel structure, including following
Sub-step:
Four sides mirror by incident laser radiation to described rotation；
The four sides mirror of described rotation by reflected light back to described reflecting element.
Further, described reception device receives described retrodirective reflection light, completes the step of follow-up reading code, including following son
Step:
Reflecting element described in retrodirective reflection light direct beam；
Described reflecting element is by the four sides mirror of described retrodirective reflection luminous reflectance to described rotation；
The four sides mirror of described rotation by described retrodirective reflection luminous reflectance to described curved mirror；
Described retrodirective reflection luminous reflectance is focused on described reception device by described curved mirror.
The light channel structure of the present invention is by incident laser radiation to the four sides mirror rotated, and the four sides mirror of rotation is by incident laser
Reflexing to reflecting element, reflection light is irradiated to bar code by reflecting element, carries out barcode scanning, forms retrodirective reflection light, is irradiated to reflecting element, instead
Penetrating part by retrodirective reflection luminous reflectance to the four sides mirror rotated, the four sides mirror of rotation is by retrodirective reflection luminous reflectance to curved mirror, curved surface
Retrodirective reflection luminous reflectance is focused on reception device by mirror.The light channel structure of the present invention, by above-mentioned improvement, is formed many by injection light
Line uniform grid, sweep limits increases, and the reading code ability of every line strengthens, and work efficiency improves, and simple in construction is easy to use.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to the structure shown in these accompanying drawings.
Fig. 1 be light channel structure reflecting element of the present invention be the structural representation of an embodiment of five pieces of plane mirrors；
Fig. 2 be light channel structure reflecting element of the present invention be the structural representation of another embodiment of five pieces of plane mirrors；
Fig. 3 be light channel structure reflecting element of the present invention be the structural representation of the another embodiment of five pieces of plane mirrors；
Fig. 4 be light channel structure reflecting element of the present invention be the structural representation of an embodiment of six pieces of plane mirrors；
Fig. 5 be light channel structure reflecting element of the present invention be the structural representation of another embodiment of six pieces of plane mirrors；
Fig. 6 be light channel structure reflecting element of the present invention be the structural representation of the another embodiment of six pieces of plane mirrors；
Fig. 7 is the schematic diagram of the grid of 20 lines of the light channel structure formation of Fig. 1；
Fig. 8 is the schematic diagram of the grid of 24 lines of the light channel structure formation of Fig. 4；
Fig. 9 is the flow chart of barcode scanning reading code method one embodiment of light channel structure of the present invention；
Figure 10 is the flow chart of step S1 in Fig. 9；
The flow chart of step S3 in Figure 11 bitmap 9.
Drawing reference numeral illustrates:
| Label | Title | Label | Title |
| 1 | Laser head | 6 | Receive device |
| 2 | First plane mirror | 7 | Signal amplification board |
| 3 | Curved mirror | 8 | Mounting bracket |
| 4 | The four sides mirror rotated | 9 | Second plane mirror |
| 5 | Reflecting element | 10 | Perforate |
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further referring to the drawings.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under not paying creative work premise all its
His embodiment, broadly falls into the scope of protection of the invention.
It is to be appreciated that directional instruction in the embodiment of the present invention (such as up, down, left, right, before and after ...) is only used
In explaining relative position relation between each parts, motion conditions etc. under a certain particular pose (as shown in drawings), if should
When particular pose changes, then directionality instruction changes the most therewith.
It addition, the description relating to " first ", " second " etc. in the present invention is only used for describing purpose, and it is not intended that refer to
Show or imply its relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", "
Two " feature can express or implicitly include at least one this feature.It addition, the technical scheme between each embodiment can
To be combined with each other, but must be based on those of ordinary skill in the art are capable of, when the combination of technical scheme occurs
Conflicting will be understood that the combination of this technical scheme does not exists, the most not at the protection model of application claims when maybe cannot realize
Within enclosing.
The present invention provides a kind of light channel structure, carries out barcode scanning for incident laser is modulated to multi-thread shoot laser, it is intended to
Single line sweep limits is little, efficiency is low, awkward problem in solution.
Referring to figs. 1 through 6, in light channel structure one embodiment of the present invention, this light channel structure at least includes: curved mirror 3, rotation
Four sides mirror 4, reflecting element 5 and receive device 6；
Reflecting element 5 includes five pieces of plane mirrors or six pieces of plane mirrors；
Wherein, incident laser radiation is to the four sides mirror 4 rotated；
The angle in four faces of the four sides mirror 4 rotated is different, and incident laser reflexes to reflecting element 5；
Reflection light is irradiated to bar code by reflecting element 5, forms retrodirective reflection light, is irradiated to reflecting element 5；
Reflecting element 5 is by the four sides mirror 4 of retrodirective reflection luminous reflectance to rotation；
Rotate four sides mirror 4 by retrodirective reflection luminous reflectance to curved mirror 3；
Retrodirective reflection luminous reflectance is focused on reception device 6 by curved mirror 3.
The light channel structure of the present embodiment, is mainly used in that incident laser is modulated to multi-thread shoot laser and carries out barcode scanning, mainly
The four sides mirror 4, the reflecting element 5 that including curved mirror 3, rotate and receive device 6, reflecting element 5 includes that five pieces of plane mirrors or six pieces are put down
Face mirror.The four sides mirror 4 rotated is the optics four sides mirror being fixed on a motor the most at the uniform velocity rotated, this motor
Specifically being controlled by the control circuit on the decoding deck being attached thereto, the angle in 4 faces of this four sides mirror is different, so same
During the incident laser prolonged exposure in one direction, each face of four sides mirror 4 of rotation will produce the reflection of different reflection directions
Light；In order to receive the reflection light that the four sides mirror 4 of rotation reflects, reflect light direction at the four sides mirror 4 rotated and be provided with reflecting element 5,
Reflecting element 5 is made up of five pieces or six pieces of plane mirrors being arranged in order, in the four sides mirror 4 of the center of each piece of plane mirror and rotation
The heart is positioned in same light path so that each piece of plane mirror of reflecting element 5 can receive the height that the four sides mirror 4 of rotation reflects
Differ 4 reflection light, five pieces of reflecting element 5 or six pieces of plane mirrors cooperate linear for 4 reflection light in every one side
Become many group reflection light output；The reflection light that reflecting element 5 is formed can be formed reverse anti-on bar code surface when being irradiated in bar code
Penetrating light, the reversibility propagated according to light, retrodirective reflection light irradiates back again reflecting element 5, and retrodirective reflection light the most now passes through
The absorption of bar code and reflection, there occurs change at wavelength and quantitative aspects, reflecting element 5 by light path bar code is produced reverse
Reflected light back is to the four sides mirror 4 rotated；The four sides mirror 4 rotated is re-used as a reflecting surface by this retrodirective reflection luminous reflectance to bent
Face mirror 3, this light-ray condensing dissipated is sent to receive device 6 by curved mirror 3；Receive device 6 and connect a photoelectric conversion plate, it is possible to
The optical signal received is converted to the pulse digit signal of telecommunication, then this pulse digital signal is put through signal amplification board
Greatly, then be transferred to decoding deck and be decoded.
The light channel structure of the present embodiment, by by incident laser radiation to the four sides mirror 4 rotated, the four sides mirror 4 of rotation will
Incident laser reflexes to reflecting element 5, and reflection light is irradiated to bar code by reflecting element 5, carries out barcode scanning, forms retrodirective reflection light, irradiates
To reflecting element 5, reflecting element 5 is by retrodirective reflection luminous reflectance to the four sides mirror 4 rotated, and the four sides mirror 4 of rotation is by anti-for retrodirective reflection light
Being mapped to curved mirror 3, retrodirective reflection luminous reflectance is focused on reception device 6 by curved mirror 3；By above-mentioned improvement, injection light is formed
Multi-thread uniform grid, sweep limits increases, and the reading code ability of every line strengthens, and work efficiency improves, simple in construction, user
Just.
Further, referring to figs. 1 through 6, this light channel structure also includes a signal amplification board 7 and laser head 1, receives device 6
Being installed on signal amplification board 7, described incident laser is penetrated by laser head 1.
The light channel structure of the present embodiment, this light channel structure also includes a signal amplification board 7, and signal amplification board 7 is by electronics unit
Part, circuit and pcb board are constituted, the multiple cylinders being connected with mounting bracket support；Reception device 6 is used for receiving curved mirror 3 and gathers
Burnt light beam, is converted to the pulse digit signal of telecommunication by the photoelectric conversion plate being attached thereto by the optical signal received, then passes through
The signal amplification board 7 being connected with photoelectric conversion plate carries out signal amplification, is finally carried out by the decoding deck being connected with signal enlarged version 8
Decoding, and transmit to computer terminal, improve the efficiency of barcode scanning and reading code；Laser head 1 by circuit control module control launch into
Penetrating laser, the wavelength of incident laser is 650nm, and flexible operation is easy to use.
Further, with reference to Fig. 1 or 4, it is described that this light channel structure also includes that the first plane mirror, described first plane mirror are positioned at
The center of curved mirror, described incident laser is through the four sides mirror of the first plane mirror reflected illumination to described rotation.
The light channel structure of the present embodiment, this light channel structure includes the first plane mirror 2, and the first plane mirror 2 is by one-body molded
Plating mode be arranged at the center of curved mirror 3, the first plane mirror 2 mainly as a reflecting surface by anti-for single line incident laser
Be mapped to rotate four sides mirror 4, flexible operation, easy to use.
Further, with reference to Fig. 2 or 5, the center of curved mirror 3 is provided with perforate 10, and described incident laser passes described perforate
10 are irradiated to the four sides mirror 4 rotated.
In another embodiment of the light channel structure of Fig. 2 or 5 offer, the center of curved mirror 3 is provided with perforate 10, laser
1 is arranged at outside the curved surface of curved mirror 3, and laser head 1 is generally aligned in the same plane with perforate 10 and the four sides mirror 4 rotated, so that swashing
The incident laser that shaven head 1 sends can be irradiated on the four sides mirror 4 of rotation through described perforate 10, improves light channel structure many
Sample.
Further, with reference to Fig. 3 or 6, this light channel structure also includes the second plane mirror 9, and described incident laser is flat through second
It is irradiated to the four sides mirror 4 rotated through described perforate 10 after face mirror 9 reflection.
In another embodiment that Fig. 3 or 6 provides, the second plane mirror 9 is in same with perforate 10 and the four sides mirror 4 rotated
Plane, laser head 1 is positioned on the centrage of mounting bracket 8, and the incident laser that laser head 1 is launched is after the second plane mirror 9 reflection
Just can be irradiated on the four sides mirror 4 of rotation through perforate 10, laser head 1 is arranged on the centrage installing pedestal 8, energy
Enough reduce the perforate of signal amplification board 7, and firmly install.
Further, referring to figs. 1 through 6, the normal direction of five pieces of plane mirrors of reflecting element 5 and the base plane of mounting bracket 8
The angle of normal direction is followed successively by 42.9 °, 43.8 °, 41.6 °, 43.8 °, 42.9 °, the normal direction angle of five pieces of adjacent two eyeglasses of plane mirror
It is followed successively by 25.7 °, 26.4 °, 26.4 °, 25.7 °.
The light channel structure of the present embodiment, reflecting element 5 is made up of five pieces of plane mirrors, five pieces of plane mirrors cooperate and with installation
Support 8 has a certain degree configuration.Reflecting element 5 is arranged in mounting bracket 8, and five pieces of plane mirrors are all by pasting or clamping mode
Being fixed in mounting bracket 8, the normal direction of five pieces of plane mirrors is followed successively by with the angle of the normal direction of the base plane of mounting bracket 8
42.9 °, 43.8 °, 41.6 °, 43.8 °, 42.9 ° so that the optical center of the four sides mirror 4 of rotation and each piece of five pieces of plane mirrors
The optical center of plane mirror is in same light path, 4 reflections different to receive the height that reflects back of four sides mirror 4 rotated
Light；Five pieces of adjacent two pieces of plane mirrors of plane mirror the method phase angle of eyeglass be followed successively by 25.7 °, 26.4 °, 26.4 °, 25.7 °,
So that each block of 4 reflection light reflected of five pieces of plane mirrors combine, form a large range of barcode scanning district
Territory, is conducive to improving the efficiency of barcode scanning.
Further, referring to figs. 1 through 6, the normal direction of six pieces of plane mirrors of reflecting element 5 and the base plane of mounting bracket 8
The angle of normal direction is followed successively by 42.1 °, 43.5 °, 41.4 °, 41.4 °, 43.5 °, 42.1 °, the method for six pieces of adjacent two eyeglasses of plane mirror
It is followed successively by 22.1 °, 18.0 °, 16.6 °, 18.0 °, 22.1 ° to angle.
The light channel structure of the present embodiment, reflecting element 5 is made up of six pieces of plane mirrors, six pieces of plane mirrors cooperate and with installation
Support 8 has a certain degree configuration.Reflecting element 5 is arranged in mounting bracket 8, and six pieces of plane mirrors are all by pasting or clamping mode
Being fixed in mounting bracket 8, the normal direction of six pieces of plane mirrors is followed successively by with the angle of the normal direction of the base plane of mounting bracket 8
42.1 °, 43.5 °, 41.4 °, 41.4 °, 43.5 °, 42.1 ° so that the optical center of the four sides mirror 4 of rotation and six pieces of plane mirrors
The optical center of each piece of plane mirror is in same light path, to receive the height that reflects back of four sides mirror 4 rotated different 4
Bar reflection light；Six pieces of adjacent two pieces of plane mirrors of plane mirror the method phase angle of eyeglass be followed successively by 22.1 °, 18.0 °, 16.6 °,
18.0 °, 22.1 °, in order to 4 reflection light that each piece of six pieces of plane mirrors are reflected combine, formed one bigger
The barcode scanning region of scope, is conducive to improving the efficiency of barcode scanning.
Further, referring to figs. 1 through 8, the grid that barcode scanning region is 20 lines of reflecting element 5 reflective light formation or 24 lines
Grid.
The light channel structure of the present embodiment, the uniform grid that barcode scanning region is 20 lines that reflecting element 5 reflective light is formed, swashs
Shaven head 1 is launched incident laser radiation and is formed 4 reflected in parallel light, each piece of plane mirror of reflecting element 5 to the four sides mirror 4 rotated
Reflect this 4 reflected in parallel light simultaneously, form 5 groups of cross one another 4 reflected in parallel light, project and just formed in a plane
The uniform grid of 20 lines.The uniform grid of 20 lines substantially increases sweep limits, and the barcode scanning ability of every line strengthens, all
Even grid has only to blocking bar code randomly just can complete barcode scanning work, it is not necessary to corresponding corresponding angle and direction, improves
The work efficiency of barcode scanning.
The uniform grid that barcode scanning region is 24 lines that reflecting element 5 reflective light is formed, laser head 1 is launched incident laser and is shone
Be mapped to rotate four sides mirror 4 on formed 4 reflected in parallel light, each piece of plane mirror of reflecting element 5 reflect simultaneously these 4 parallel instead
Penetrate light, form 6 groups of cross one another 4 reflected in parallel light, project the uniform grid just forming 24 lines in a plane.24 lines
Uniform grid substantially increase sweep limits, and the barcode scanning ability of single line strengthens, and uniform grid has only to randomly
Blocking bar code just can complete barcode scanning work, it is not necessary to corresponding corresponding angle and direction, improves the work efficiency of barcode scanning.
Referring to figs. 1 through 11, the present invention also provides for a kind of barcode scanning and the reading code method of light channel structure, comprises the following steps:
Incident laser is modulated to 20 lines or the grid of 24 lines by S1: light channel structure；
S2: utilize the grid of described 20 lines or 24 lines to be irradiated in bar code carry out barcode scanning, form retrodirective reflection light；
S3: receive device and receive described retrodirective reflection light, complete follow-up reading code.
In the present embodiment, when using this light channel structure to carry out barcode scanning and reading code, it is necessary first to the incidence that laser head 1 is penetrated
Laser is modulated to 20 lines or the grid of 24 lines by light channel structure；Then 20 lines of modulation injection or the grid of 24 lines are irradiated to
Barcode scanning is carried out in bar code, owing to bar code is typically attached on a white base plate by the black lines that size is different, black lines pair
Laser or infrared-ray etc. have Absorption, and white base plate has reflection to laser or infrared-ray etc., so 20
When the grid of line or 24 lines is radiated in bar code at random, bar code can be absorbed the light of certain wavelength and be carried out instead by white base plate
Penetrate, form retrodirective reflection light；Finally, base plate the retrodirective reflection light reflected is mapped to receive through the reverse direction loop of light channel structure
On device 6, receive device 6 and connect a photoelectric conversion plate, it is possible to the optical signal received is converted to the pulse digit signal of telecommunication, so
After this pulse digital signal is amplified through signal amplification board, then be transferred to decoding deck and be decoded, change into digital signal
Reach terminal, complete reading code.
The light channel structure of the present embodiment, is first modulated to incident laser 20 lines or the grid of 24 lines, then utilizes 20 lines
Or 24 the grid of line be irradiated in bar code carry out barcode scanning, form retrodirective reflection light, receive retrodirective reflection finally by receiving device 6
Light, decoding deck is decoded work, and the scope of barcode scanning increases, and the reading code ability of every line strengthens, and is conducive to improving work efficiency,
And it is easy for operation.
Further, referring to figs. 1 through 11, step S1, including following sub-step:
S11: by incident laser radiation to the four sides mirror 4 rotated；
Incident laser is reflexed to reflecting element 5 by the four sides mirror 4 of S12: rotation.
In the present embodiment, when using this light channel structure to carry out barcode scanning and reading code, incident laser is modulated to 20 by light channel structure
The process of the grid of line or 24 lines specifically includes: firstly, it is necessary to switch on power, and controls laser head to the first plane mirror 2 or the second
Plane mirror 9 direct laser, the first plane mirror 2 or the second plane mirror 9 are in same plane with laser head 1；First plane mirror 2 receives
After the incident laser of laser head 1 injection, directly being reflexed to the four sides mirror 4 rotated, the second plane mirror 9 will reflect incident laser
Perforate 10 through curved mirror 3 center is irradiated to the four sides mirror 4 rotated, or is directly launched incident laser by laser head 1 and pass
The perforate 10 at curved mirror 3 center is irradiated to the four sides mirror 4 rotated；The four sides mirror 4 rotated is an at the uniform velocity counterclockwise or dextrorotation
The optics four sides mirror turned, realizes at the uniform velocity rotating by a motor；Laser head 1 can be penetrated by the four sides mirror 4 rotated by rotating
Laser Modulation become the reflected in parallel light of 4 lines, and then transmission to reflecting element 5 forms the uniform grid of 20 lines or forms the equal of 24 lines
Even grid, is beneficial to follow-up barcode scanning work.
The light channel structure of the present embodiment, forms uniform grid or the uniform grid of 24 lines of 20 lines by reflecting element 5, increases
Barcode scanning scope, is conducive to improving barcode scanning efficiency, and easy for operation.
Further, referring to figs. 1 through 11, step S3, including following sub-step:
S31: retrodirective reflection light direct beam reflecting element 5；
S32: reflecting element is by the four sides mirror 4 of described retrodirective reflection luminous reflectance to rotation；
The four sides mirror 4 of S33: rotation by described retrodirective reflection luminous reflectance to curved mirror 3；
Described retrodirective reflection luminous reflectance is focused on reception device 6 by S34: curved mirror 3.
In the present embodiment, receive device 6 and receive the detailed process that described retrodirective reflection light carries out reading code and include: to bar code
When being scanned, bar code itself can produce reflection light, this reflection light meeting direct projection reflecting element 5, the part being i.e. scanned bar code
Light is inversely propagated along original optical path；Retrodirective reflection light is reflected part 5 and reflects, and retrodirective reflection light is transferred to the four sides mirror 4 rotated；
Similarly, the reflection of rotated four sides mirror 4, inversely penetrate light and all converge on curved mirror 3；Owing to curved mirror 3 curves inwardly,
So curved mirror 3 can focus on reception device 6 by converging to whole reflection light thereon, reception device 6 connects a photoelectricity and turns
Change plate, it is possible to the optical signal received is converted to the pulse digit signal of telecommunication, is then put through signal by this pulse digital signal
Big plate is amplified, then is transferred to decoding deck and is decoded, and finally reaches terminal, completes reading code.
The light channel structure of the present embodiment, utilizes the reversibility of light, is passed by light channel structure by the optical signal after bar code scan
To receiving device 6, and carry out opto-electronic conversion by receiving the photoelectric conversion plate of device 6, reach terminal, simple to operate,
And improve reading code efficiency.
The foregoing is only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every at this
Under the inventive concept of invention, utilize the equivalent structure transformation that description of the invention and accompanying drawing content are made, or directly/indirectly use
The technical field relevant at other is included in the scope of patent protection of the present invention.
Claims (10)
1. a light channel structure, carries out barcode scanning for incident laser is modulated to multi-thread shoot laser, it is characterised in that
Described light channel structure at least includes: curved mirror, the four sides mirror of rotation, reflecting element and reception device；
Described reflecting element includes five pieces of plane mirrors or six pieces of plane mirrors；
Wherein, incident laser radiation is to the four sides mirror of described rotation；
The angle in four faces of the four sides mirror of described rotation is different, and incident laser reflexes to described reflecting element；
Reflection light is irradiated to bar code by described reflecting element, forms retrodirective reflection light, is irradiated to described reflecting element；
Described reflecting element is by the four sides mirror of retrodirective reflection luminous reflectance to described rotation；
The four sides mirror of described rotation by retrodirective reflection luminous reflectance to described curved mirror；
Retrodirective reflection luminous reflectance is focused on described reception device by described curved mirror.
Light channel structure the most according to claim 1, it is characterised in that this light channel structure also includes a signal amplification board and swashs
Shaven head, described reception device is installed on described signal amplification board, and described incident laser is penetrated by described laser head.
Light channel structure the most according to claim 2, it is characterised in that this light channel structure also includes the first plane mirror, described
First plane mirror is positioned at the center of described curved mirror, described incident laser through the first plane mirror reflected illumination to the four of described rotation
Face mirror.
Light channel structure the most according to claim 2, it is characterised in that the center of described curved mirror is provided with perforate, described in enter
Penetrate laser and be irradiated to the four sides mirror of described rotation through described perforate.
Light channel structure the most according to claim 4, it is characterised in that this light channel structure also includes the second plane mirror, described
Incident laser is irradiated to the four sides mirror of described rotation after described second plane mirror reflection through described perforate.
Light channel structure the most according to claim 1, it is characterised in that the normal direction of described five pieces of plane mirrors is propped up with described installation
The angle of the normal direction of the base plane of frame is followed successively by 42.9 °, 43.8 °, 41.6 °, 43.8 °, 42.9 °, described five pieces of plane mirror phases
The normal direction angle of adjacent two eyeglasses is followed successively by 25.7 °, 26.4 °, 26.4 °, 25.7 °；The normal direction of described six pieces of plane mirrors and described peace
The angle of the normal direction of the base plane of dress support is followed successively by 42.1 °, 43.5 °, 41.4 °, 41.4 °, 43.5 °, 42.1 °, and described six
The normal direction angle of adjacent two eyeglasses of block plane mirror is followed successively by 22.1 °, 18.0 °, 16.6 °, 18.0 °, 22.1 °.
Light channel structure the most according to claim 1, it is characterised in that the barcode scanning district that described reflecting element reflective light is formed
Territory is grid or the grid of 24 lines of 20 lines.
8. the barcode scanning reading code method of the light channel structure described in claim 1, it is characterised in that comprise the following steps:
Incident laser is modulated to 20 lines or the grid of 24 lines by light channel structure；
The grid utilizing described 20 lines or 24 lines is irradiated in bar code carry out barcode scanning, forms retrodirective reflection light；
Receive device and receive described retrodirective reflection light, complete follow-up reading code.
The barcode scanning reading code method of light channel structure the most according to claim 8, it is characterised in that described light channel structure is by incidence
Laser Modulation is the step of the grid of 20 lines or 24 lines, including following sub-step:
Four sides mirror by incident laser radiation to described rotation；
The four sides mirror of described rotation by reflected light back to described reflecting element.
The barcode scanning reading code method of light channel structure the most according to claim 8, it is characterised in that described reception device receives
Described retrodirective reflection light, completes the step of follow-up reading code, including following sub-step:
Reflecting element described in retrodirective reflection light direct beam；
Described reflecting element is by the four sides mirror of described retrodirective reflection luminous reflectance to described rotation；
The four sides mirror of described rotation by described retrodirective reflection luminous reflectance to described curved mirror；
Described retrodirective reflection luminous reflectance is focused on described reception device by described curved mirror.
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