CN109190440A - Image recognition device with large angle illumination structure - Google Patents
Image recognition device with large angle illumination structure Download PDFInfo
- Publication number
- CN109190440A CN109190440A CN201811285304.1A CN201811285304A CN109190440A CN 109190440 A CN109190440 A CN 109190440A CN 201811285304 A CN201811285304 A CN 201811285304A CN 109190440 A CN109190440 A CN 109190440A
- Authority
- CN
- China
- Prior art keywords
- image
- light source
- image recognition
- large angle
- recognition device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- G06K7/14—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
- G06K7/1404—Methods for optical code recognition
- G06K7/1408—Methods for optical code recognition the method being specifically adapted for the type of code
-
- 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
- G06K7/1404—Methods for optical code recognition
- G06K7/146—Methods for optical code recognition the method including quality enhancement steps
Abstract
The present invention relates to a kind of image recognition devices with large angle illumination structure, comprising: image-taking device, for obtaining the image information of images to be recognized；And at least one set of lighting device, the lighting device include light source assembly for issuing illuminating ray and the diaphragm being arranged on the direction of illumination of the light source assembly；The capture direction angle at an acute angle of the direction of illumination of the light source assembly and the image-taking device, the diaphragm control the light that the light source assembly is irradiated in the images to be recognized.The shape and brightness that can control illumination region in images to be recognized by diaphragm, form corresponding illumination region on the smooth surface for have images to be recognized, and the size of illumination region can all cover the size range of images to be recognized.This lighting device is conducive to the reading of image recognition device, provides uniform, high-quality illumination for image recognition device.
Description
Technical field
The present invention relates to images to distinguish field, knows more specifically to a kind of image with large angle illumination structure
Read equipment.
Background technique
Traditional bar code scan lighting device, light source generally use LED point light source or illuminated by surface light source.
One or a few LED point light sources generally can be installed in camera side using LED point light source.Since light source is originally in
In divergent state, an apparent illumination region cannot be formed, therefore one prompt need to be installed in the other side and be used to assist
Decoding apparatus alignment.
One LED area light source generally can be installed in camera side using LED area light source, since light source itself is in diverging
State cannot form an apparent illumination region, therefore need to install a prompt in the other side for auxiliary decoder dress
Set alignment.
Such lighting device scope of application is confined to the relatively rough occasion of article surface vein, for example prints in paper facer
The bar code of brush.
But the bar code on smooth object surface has larger impact, sensitive chip meeting to bar code image using this light source
It forms hot spot and causes overexposure phenomenon；In addition prompt can also interfere the imaging of bar code；It is very big to be caused to decoding
It is difficult.
Summary of the invention
The technical problem to be solved in the present invention is that providing a kind of image recognition device with large angle illumination structure.
The technical solution adopted by the present invention to solve the technical problems is: constructing a kind of figure with large angle illumination structure
As recognizing apparatus, comprising:
Image-taking device, for obtaining the image information of images to be recognized；And
At least one set of lighting device, the lighting device include that light source assembly for issuing illuminating ray and setting exist
Diaphragm on the direction of illumination of the light source assembly；
The capture direction angle at an acute angle of the direction of illumination of the light source assembly and the image-taking device, the diaphragm control
The light source assembly is irradiated to the light in the images to be recognized.
Preferably, the light source assembly includes LED light source.
Preferably, the LED light source is area source or point light source.
Preferably, the angle of the optical axis of the optical axis of the light source assembly and the image-taking device is 60 ± 10 degree.
Preferably, described image recognizing apparatus includes illumination described in two groups of the two sides for being symmetricly set on the image-taking device
Device.
Preferably, lighting device described in two groups is deviated to the capture direction of the image-taking device, with the image-taking device shape
At U-shaped arrangement.
Preferably, lighting device described in two groups and the image-taking device are arranged side by side.
Preferably, the image-taking device includes decoding lens.
Preferably, the diaphragm is field stop, and the visual field of the field stop is square, length-width ratio and the capture
The decoding chip of device is corresponding.
Preferably, the bar code reading that described image recognizing apparatus is used to print, be etched on smooth papery and metal surface.
Implement the image recognition device with large angle illumination structure of the invention, has the advantages that and pass through light
Door screen can control the shape and brightness of illumination region in images to be recognized, and phase is formed on the smooth surface for have images to be recognized
The illumination region answered, the size of illumination region can all cover the size range of images to be recognized.This lighting device is conducive to
The reading of image recognition device provides uniform, high-quality illumination for image recognition device.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the structural schematic diagram of the image recognition device with large angle illumination structure in the embodiment of the present invention.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail
A specific embodiment of the invention.
As shown in Figure 1, the image recognition device packet with large angle illumination structure in a preferred embodiment of the invention
Image-taking device 1 and lighting device 2 are included, image-taking device 1 is used to obtain the image information of images to be recognized 3.Lighting device 2 includes
Two groups, two groups of lighting devices 2 are symmetricly set on the two sides of image-taking device 1, respectively from two sides to image-taking device 1 before figure to be identified
As 3 irradiations provide light.
Image-taking device 1 includes decoding lens 11, can be identified to images to be recognized 3.Lighting device 2 includes for issuing
The light source assembly 21 of illuminating ray and the diaphragm 22 being arranged on the direction of illumination of light source assembly 21, the irradiation of light source assembly 21
The capture direction angle at an acute angle in direction and image-taking device 1, diaphragm 22 control light source assembly 21 and are irradiated in images to be recognized 3
Light.
The shape and brightness that can control illumination region in images to be recognized 3 by diaphragm 22 are having images to be recognized 3
Smooth surface on form corresponding illumination region, the size of illumination region can all cover the size model of images to be recognized 3
It encloses.This lighting device 2 is conducive to the reading of image recognition device, provides uniform, high-quality illumination for image recognition device.It is preferred that
Ground, image recognition device is primarily adapted for use in printing, the bar code being etched on smooth papery and metal surface is read, especially low coverage
From small bar code.
Diaphragm 22 is field stop, and the visual field of field stop is square, the decoding chip 12 of length-width ratio and image-taking device 1
It is corresponding.In other embodiments, the visual field of diaphragm 22 can also be the other shapes such as circle, square.
In some embodiments, light source assembly 21 includes LED light source, in general, LED light source is area source or point light source.
Preferably, the angle of the optical axis of the optical axis of light source assembly 21 and image-taking device 1 is 60 ± 10 degree, it is ensured that light source
After the light that component 21 projects reflects in the images to be recognized 3 of smooth surface, image-taking device 1 will not be entered.
In the present embodiment, two groups of lighting devices 2 are deviated to the capture direction of image-taking device 1, form U with image-taking device 1
Type arrangement can eliminate visual occlusion conducive to the barcode scanning head for being made into U-shaped, convenient for alignment barcode scanning, be more conducive to solving
Code.
In other embodiments, two groups of lighting devices 2 can also be arranged side by side with image-taking device 1, form sweeping for flush configuration
Harbour, the optical axis of image-taking device 1 and the optical axis included angle of lighting device 2 are controlled at 60 ± 10 degree, and closely small item also may be implemented
The reading illumination of code.
Two groups of lighting devices 2 are symmetrical arranged, and make illumination region in a center of symmetry, so that illumination region is reading code region,
Prompt is eliminated, it is simple and clear.
In other embodiments, lighting device 2 can also only include one group or including more than two, and setting is in image-taking device 1
Outside, provide light for images to be recognized 3.
It is to be appreciated that above-mentioned each technical characteristic can be used in any combination and unrestricted.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of image recognition device with large angle illumination structure characterized by comprising
Image-taking device (1), for obtaining the image information of images to be recognized (3)；And
At least one set of lighting device (2), the lighting device (2) include for issue the light source assembly of illuminating ray (21) and
The diaphragm (22) being arranged on the direction of illumination of the light source assembly (21)；
The direction of illumination of the light source assembly (21) and the capture direction angle at an acute angle of the image-taking device (1), the diaphragm
(22) it controls the light source assembly (21) and is irradiated to the light on the images to be recognized (3).
2. the image recognition device according to claim 1 with large angle illumination structure, which is characterized in that the light source
Component (21) includes LED light source.
3. the image recognition device according to claim 2 with large angle illumination structure, which is characterized in that the LED
Light source is area source or point light source.
4. the image recognition device according to claim 1 with large angle illumination structure, which is characterized in that the light source
The angle of the optical axis of the optical axis and image-taking device (1) of component (21) is 60 ± 10 degree.
5. the image recognition device according to claim 1 with large angle illumination structure, which is characterized in that described image
Recognizing apparatus includes lighting device (2) described in two groups of the two sides for being symmetricly set on the image-taking device (1).
6. the image recognition device according to claim 5 with large angle illumination structure, which is characterized in that described in two groups
Lighting device (2) is deviated to the capture direction of the image-taking device (1), forms U-shaped arrangement with the image-taking device (1).
7. the image recognition device according to claim 5 with large angle illumination structure, which is characterized in that described in two groups
Lighting device (2) and the image-taking device (1) are arranged side by side.
8. the image recognition device according to claim 1 with large angle illumination structure, which is characterized in that the capture
Device (1) includes decoding lens (11).
9. the image recognition device according to any one of claims 1 to 8 with large angle illumination structure, feature exist
In the diaphragm (22) is field stop, and the visual field of the field stop is square, length-width ratio and the image-taking device (1)
Decoding chip (12) it is corresponding.
10. the image recognition device according to any one of claims 1 to 8 with large angle illumination structure, feature exist
In the bar code reading that described image recognizing apparatus is used to print, be etched on smooth papery and metal surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811285304.1A CN109190440A (en) | 2018-10-31 | 2018-10-31 | Image recognition device with large angle illumination structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811285304.1A CN109190440A (en) | 2018-10-31 | 2018-10-31 | Image recognition device with large angle illumination structure |
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| Publication Number | Publication Date |
|---|---|
| CN109190440A true CN109190440A (en) | 2019-01-11 |
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ID=64940910
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811285304.1A Pending CN109190440A (en) | 2018-10-31 | 2018-10-31 | Image recognition device with large angle illumination structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113139396A (en) * | 2021-04-02 | 2021-07-20 | 福建新大陆自动识别技术有限公司 | Bar code reading equipment with reflector |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203630791U (en) * | 2013-12-18 | 2014-06-04 | 深圳市民德电子科技有限公司 | Image identification equipment |
| CN104239876A (en) * | 2013-06-21 | 2014-12-24 | 三星显示有限公司 | Method and appartus for recongnizing barcode of deposition mask |
| CN104932090A (en) * | 2014-03-18 | 2015-09-23 | 卡尔蔡司显微镜有限责任公司 | Method For Fluorescence Microscopy Of A Sample |
| CN209118298U (en) * | 2018-10-31 | 2019-07-16 | 深圳市民德电子科技股份有限公司 | Image recognition device with large angle illumination structure |
-
2018
- 2018-10-31 CN CN201811285304.1A patent/CN109190440A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104239876A (en) * | 2013-06-21 | 2014-12-24 | 三星显示有限公司 | Method and appartus for recongnizing barcode of deposition mask |
| CN203630791U (en) * | 2013-12-18 | 2014-06-04 | 深圳市民德电子科技有限公司 | Image identification equipment |
| CN104932090A (en) * | 2014-03-18 | 2015-09-23 | 卡尔蔡司显微镜有限责任公司 | Method For Fluorescence Microscopy Of A Sample |
| CN209118298U (en) * | 2018-10-31 | 2019-07-16 | 深圳市民德电子科技股份有限公司 | Image recognition device with large angle illumination structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113139396A (en) * | 2021-04-02 | 2021-07-20 | 福建新大陆自动识别技术有限公司 | Bar code reading equipment with reflector |
| CN113139396B (en) * | 2021-04-02 | 2023-05-05 | 福建新大陆自动识别技术有限公司 | Bar code reading equipment with reflector |
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