CN107122695A - A kind of image scanning apparatus - Google Patents
A kind of image scanning apparatus Download PDFInfo
- Publication number
- CN107122695A CN107122695A CN201710458709.XA CN201710458709A CN107122695A CN 107122695 A CN107122695 A CN 107122695A CN 201710458709 A CN201710458709 A CN 201710458709A CN 107122695 A CN107122695 A CN 107122695A
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- light
- imaging device
- optical axis
- compensating apparatus
- light compensating
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- 238000003384 imaging method Methods 0.000 claims abstract description 74
- 230000003287 optical effect Effects 0.000 claims abstract description 43
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000004907 flux Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 239000011521 glass Substances 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 230000011514 reflex Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003760 hair shine Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
-
- 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
- G06K2007/10524—Hand-held scanners
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Microscoopes, Condenser (AREA)
Abstract
The embodiments of the invention provide a kind of image scanning apparatus, the image scanning apparatus includes light compensating apparatus, imaging device and protection eyeglass；Wherein, the optical axis of both light compensating apparatus and imaging device is parallel to each other, and the optical axis oblique of protection eyeglass and light compensating apparatus, and is tilted towards imaging device.The technical scheme provided using the embodiment of the present invention, it is possible to reduce the interference of both light compensating apparatus and imaging device light beam, so as to improve the imaging definition of imaging device.
Description
Technical field
The present invention relates to optical technical field, more particularly to a kind of image scanning apparatus.
Background technology
Image scanning apparatus (such as scanner) is generally used for obtaining the bar code image information on article.
Existing image scanning apparatus mainly includes housing, light compensating apparatus, imaging device and protection eyeglass.
Wherein, light compensating apparatus and imaging device are arranged in housing, and, the optical axis phase of both light compensating apparatus and imaging device
It is mutually parallel.Housing is provided with shooting mouth, and imaging device obtains the image information on article by shooting mouth and transmitted to computer etc.
Background devices, for background devices processing, light compensating apparatus gives outer goodses light filling by shooting hole, is obtained to improve imaging device
The definition of image information.Protection eyeglass is fixedly connected with the casing and is used to block shooting mouth, and protection eyeglass is perpendicular to light filling
The optical axis of both device and imaging device.
Find in actual applications：The illumination that light compensating apparatus is projected is mapped to after protective glass piece, and a part of light passes through protective glass
Piece is formd for the light field to article light filling, and a part is by protecting eyeglass to produce reflection light, produced reflection light
In there is the shooting light beam that can much inject in imaging device with imaging device to interfere, causing image scanning apparatus to be clapped must scheme
As information fuzzy is unclear.
In view of this, those skilled in the art urgently improve the structure of image scanning apparatus, with solve light compensating apparatus with into
As the interference of both devices light beam cause to clap image information poor definition technical problem.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of image scanning apparatus, to improve imaging definition.Particular technique
Scheme is as follows：
A kind of image scanning apparatus provided in an embodiment of the present invention, including：Light compensating apparatus, imaging device and protection eyeglass；
Wherein, the optical axis of both the light compensating apparatus and the imaging device is parallel to each other, and the protection eyeglass and institute
The optical axis oblique of light compensating apparatus is stated, and is tilted towards the imaging device.
Optionally, the angle of the protection eyeglass and the optical axis oblique of the light compensating apparatus is 60~90 °.
Optionally, the angle of the protection eyeglass and the optical axis oblique of the light compensating apparatus is 70~80 °.
Optionally, described image scanning device also includes sighting means, and the sighting means is used to pass through the protective glass
Light field is sighted in piece formation.
Optionally, the optical axis of the sighting means is parallel with the optical axis of the imaging device.
Optionally, described image scanning device also includes housing；
The light compensating apparatus, the imaging device and the sighting means are located in the housing；
The housing is fixedly connected provided with mouth, the protection eyeglass is shot with the housing, and for blocking the bat
Take the photograph mouth.
Image scanning apparatus provided in an embodiment of the present invention, including light compensating apparatus, imaging device and protection eyeglass；Wherein,
The optical axis of both light compensating apparatus and imaging device is parallel to each other, and protection eyeglass and light compensating apparatus optical axis oblique, and towards into
As device is tilted.The situation vertical with the optical axis of imaging device relative to protection eyeglass, when protecting lens tilt, can reduce benefit
The optical axis of light light field close to imaging device side light to protection eyeglass incidence angle.Again because protection eyeglass is to imaging dress
Put inclined, protective glass sector-meeting is emitted onto in the onesize region of itself, the larger light of luminous flux reflexes to imaging dress
The side of nearly light compensating apparatus is rested against, and the light for making luminous flux small reflexes to imaging device.Overall, into imaging dress
The luminous flux for the light put is reduced, and the interference of both light compensating apparatus and imaging device light beams is also just reduced, so as to carry
The imaging definition of high imaging device.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the first structural representation of image scanning apparatus provided in an embodiment of the present invention；
Fig. 2 is the forward sight structural representation of embodiment illustrated in fig. 1；
Fig. 3 is located at reflection light distribution schematic diagram under first state and the second state for protection eyeglass；
Fig. 4 is second of structural representation of image scanning apparatus provided in an embodiment of the present invention.
Embodiment
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
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
In order to improve the imaging definition of image scanning apparatus, set the embodiments of the invention provide a kind of image scanning
It is standby, specific embodiment is illustrated below in conjunction with Fig. 1.
Reference picture 1, Fig. 1 is the first structural representation of image scanning apparatus provided in an embodiment of the present invention, the image
Scanning device, including：Light compensating apparatus 1, imaging device 2 and protection eyeglass 3；
Wherein, the optical axis of both light compensating apparatus 1 and imaging device 2 is parallel to each other, and protection eyeglass 3 and light compensating apparatus 1
Optical axis oblique, and tilted towards imaging device 2.
During concrete application, light compensating apparatus 1 can include light emitting source and light filling optical mirror slip, and light emitting source passes through light filling optical frames
Piece formation light filling light field 4, the shape for light emitting source and light filling optical mirror slip is not specifically limited.
As shown in Fig. 2 Fig. 2 is the forward sight structural representation of embodiment illustrated in fig. 1, the optical axis OO ' of light compensating apparatus 1 is to mend
Vector line segment in the optical axis of light light field 4, the figureIt is the optical axis of light filling light field 4 to the oriented vertical lines of optical axis L L ' of imaging device 2
Section, vector line segmentPositioned at protection eyeglass 3 close to the side of imaging device 2, along vector line segmentDirection vector, vector
Line segmentPoint to protection eyeglass 3 distance gradually decrease, such as L1>L2>L3.
Using embodiment illustrated in fig. 1, the situation vertical with the optical axis of imaging device 2 relative to protection eyeglass 3 works as protective glass
When piece 3 is tilted, the optical axis of light compensating apparatus 1 can be reduced close to the light of the side of imaging device 2 to the incidence angle for protecting eyeglass 3.Again
Because protection eyeglass 3 is inclined to imaging device 2, protection eyeglass 3 can be emitted onto in the onesize region of itself, and light leads to
The larger light of amount reflexes to imaging device 2 close to the side of light compensating apparatus 1, and the light for making luminous flux small reflexes to imaging dress
Put 2.Overall, the luminous flux into the light of imaging device 2 is reduced, 2 liang of such light compensating apparatus 1 and imaging device
The interference of person's light beam is also just reduced, so as to improve the imaging definition of imaging device 2.
Concrete analysis is such as：Analyze for convenience, first state referenced below is protection eyeglass 3 and the light of imaging device 2
The vertical state of axle, the second state for protection eyeglass 3 and imaging device 2 optical axis oblique, and towards the state of imaging device 2.
The outgoing beam of light compensating apparatus 1 can be collimated light beam, convergent beam and divergent beams, but generally,
In order to light filling fully, the outgoing beam for generally using light compensating apparatus 1 is divergent beams.When the light compensating apparatus 1 of use
Outgoing beam be divergent beams when, the light characteristic that goes out of light compensating apparatus 1 includes：The light filling light field irradiation that light compensating apparatus 1 is formed
To in the plane of optical axis, for two irradiation areas of same size, the axle centered on the optical axis of light compensating apparatus 1,
It is smaller radially distance light flux to be got over from central shaft.The reflection light mainly optical axis in light filling light field for injecting imaging device is close
The light of imaging device side passes through what is reflected to form.
Reference picture 3, Fig. 3 is located at reflection light distribution schematic diagram under first state and the second state for protection eyeglass；Light filling
In the optical axis OO ' of the device 1 and optical axis L L ' of imaging device 2, the outgoing beam of light compensating apparatus 1, the light between OA and OA ' shines
It is mapped on the protection eyeglass 3 under first state, this some light can be reflected to imaging device 2, the light between OA ' and OB shines
It is mapped on the protection eyeglass 3 under first state, this some light can be reflected to side of the imaging device 2 away from light compensating apparatus 1.
Second state is relative to first state, and the light between the light and OA ' and OB between OA and OA ' reaches protection eyeglass 3
Incident angle reduces so that under the second state, and the light between OA and OA ' is irradiated on protection eyeglass 3, this some light meeting
Imaging device 2 is reflected to close to the side of light compensating apparatus 1, the light between OA ' and OB is irradiated on protection eyeglass 3, this portion
Light splitter can be reflected to imaging device 2.
Further, the principle of light characteristic and light along straightline propagation is gone out and due to light compensating apparatus 1 so that first
Under state or under the second state, in the case of irradiation area identical, the light between OA and OA ' is irradiated on protection eyeglass 3
Light flux ratio OA ' and OB between light be irradiated to protection eyeglass 3 on luminous flux it is big.It follows that under the second state, most
The luminous flux for entering the light of imaging device 2 eventually is reduced, and so also just reduces both light compensating apparatus 1 and imaging device 2 light beams
Interference, so as to improve the imaging definition of imaging device 2.
In a kind of embodiment of the embodiment of the present invention, with continued reference to Fig. 3, protect the optical axis of eyeglass 3 and light compensating apparatus 1 oblique
The angle, θ of friendship is 60~90 °.Further, the angle, θ of the optical axis oblique of protection eyeglass 3 and light compensating apparatus 1 is 70~80 °.This
Sample is set, and can not only efficiently reduce the luminous flux that the reflection light produced at protection eyeglass 3 enters imaging device 2, also
It can take into account the direction of the light beam of light compensating apparatus 1 through the refracted light of protection eyeglass 3, and outside article light to be captured is saturating
Overprotection eyeglass 3 is effectively refracted into imaging device 2, so that the imaging clearly of imaging device 2.
Reference picture 4, Fig. 4 is second of structural representation of image scanning apparatus provided in an embodiment of the present invention, the image
Scanning device can also include sighting means 5, and sighting means 5 is used to sight light field 6 through the protection formation of eyeglass 3.Sighting means 5
Setting so that during shooting, can to shoot article accurately be positioned, realize fast and effectively shoot.
With continued reference to Fig. 4, the optical axis of sighting means 5 is parallel with the optical axis of imaging device 2, can improve the essence for sighting positioning
Degree.
In a kind of embodiment of the embodiment of the present invention, the image scanning apparatus can be with housing；Light compensating apparatus 1, imaging
Device 2 and sighting means 5 are located in housing；Housing is fixedly connected with the casing provided with mouth, protection eyeglass 3 is shot, and for hiding
Gear shoots mouth.The shapes and sizes of housing are not specifically limited in present invention implementation, imaging device 2 obtains thing by shooting mouth
Image information on product, light compensating apparatus 1 gives outer goodses light filling by shooting mouth, and image letter is obtained to improve imaging device 2
The definition of breath.Protection eyeglass 3 is fixedly connected with the casing and for blocking shooting mouth, and protection eyeglass 3 is perpendicular to light compensating apparatus 1
With both optical axises of imaging device 2.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
Each embodiment in this specification is described by the way of related, identical similar portion between each embodiment
Divide mutually referring to what each embodiment was stressed is the difference with other embodiment.It is real especially for system
Apply for example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring to embodiment of the method
Part explanation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (6)
1. a kind of image scanning apparatus, it is characterised in that including：Light compensating apparatus, imaging device and protection eyeglass；
Wherein, the optical axis of both the light compensating apparatus and the imaging device is parallel to each other, and the protection eyeglass is mended with described
The optical axis oblique of electro-optical device, and tilted towards the imaging device.
2. image scanning apparatus according to claim 1, it is characterised in that the protection eyeglass and the light compensating apparatus
The angle of optical axis oblique is 60~90 °.
3. image scanning apparatus according to claim 2, it is characterised in that the protection eyeglass and the light compensating apparatus
The angle of optical axis oblique is 70~80 °.
4. the image scanning apparatus according to any one of claims 1 to 3, it is characterised in that also including sighting means, described
Sighting means is used to sight light field through the protection eyeglass formation.
5. image scanning apparatus according to claim 4, it is characterised in that the optical axis of the sighting means and the imaging
The optical axis of device is parallel.
6. image scanning apparatus according to claim 4, it is characterised in that also including housing；
The light compensating apparatus, the imaging device and the sighting means are located in the housing；
The housing is fixedly connected provided with mouth, the protection eyeglass is shot with the housing, and for blocking the shooting mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710458709.XA CN107122695B (en) | 2017-06-16 | 2017-06-16 | Image scanning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710458709.XA CN107122695B (en) | 2017-06-16 | 2017-06-16 | Image scanning equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107122695A true CN107122695A (en) | 2017-09-01 |
| CN107122695B CN107122695B (en) | 2023-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710458709.XA Active CN107122695B (en) | 2017-06-16 | 2017-06-16 | Image scanning equipment |
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| CN107122695B (en) | 2023-08-11 |
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