CN202372256U - Multi-angle color collecting device and detection device of color-shifting ink - Google Patents
Multi-angle color collecting device and detection device of color-shifting ink Download PDFInfo
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- CN202372256U CN202372256U CN201120503033XU CN201120503033U CN202372256U CN 202372256 U CN202372256 U CN 202372256U CN 201120503033X U CN201120503033X U CN 201120503033XU CN 201120503033 U CN201120503033 U CN 201120503033U CN 202372256 U CN202372256 U CN 202372256U
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Abstract
The utility model discloses a multi-angle color collecting device and a detection device of color-shifting ink. The color collecting device comprises a light source illuminating an area to be detected, two color sensors for collecting colors of the area to be detected from different observation angles respectively and a light guide channel which can guide incident light of the light source into the area to be detected and guide reflected light of the area to be detected into the two color sensors. The detection device comprises the color collecting device and a color processing device. The color collecting device and the detection device can control angles of the incident light and the reflected light accurately, simultaneously avoids disturbance of outside light, and well achieves detection whether the area to be detected has the color-shifting ink.
Description
Technical field
The utility model relates to field of photoelectric technology, relates in particular to the color harvester of multi-angle and the checkout equipment of color shifting ink.
Background technology
Interference of light color shifting ink (be called for short color shifting ink, claim photochromatic printing ink, OVI again) is the novel ink with dynamic color changeable effect.Use the picture and text of color shifting ink printing, can observe various colors from different perspectives, when about 0 degree and 60 degree, observing especially, can demonstrate two kinds of distinct colors.Because dynamic color changeable effect that color shifting ink had can't be used high-definition scanning appearance, color copy machine and other device replications, its design and production technology have professionally in addition, and complex manufacturing technology is invested hugely, is used to the false proof of bank note more.
Adopt the device of mechanical detection color shifting ink considerably less at present; Most of adopt be based on image collecting devices such as CMOS camera or CCD; Treat surveyed area from two different angles and take pictures, obtain this regional direct picture (from the image of smaller angle shooting) and side image (from the image of taking than wide-angle); Adopt high performance image processor to handle in real time then, the color that contrasts zone to be detected on two width of cloth images is discerned the false from the genuine.Because the volume of image collecting devices such as CMOS or CCD is bigger; With image collecting device be installed in indoor design very compact examine item by item, in the sorting equipment time; Increased the Equipment Design requirement greatly, also increased the overall volume of equipment, the workload of rear end Flame Image Process is very big in addition; When handling in real time, to the performance requirement of image processor than higher.
In order to address the above problem; Application number is that 201110005373.4 one Chinese patent application has proposed a kind of bank note, ticket identification device; This device comprises the light source in an irradiation zone to be detected; Comprise that also thereby two reflected light that receive color change intervals from different view angles gather the color sensor of field color to be detected, the aberration of the color of gathering through two color sensors is relatively judged the true and false of bank note.The volume of this identification device is less than the pick-up unit that adopts CMOS or CCD, and the while, the operand of back-end processing was less owing to color sensor output is magnitude of voltage.
Though above-mentioned bank note, ticket identification device have possessed lot of advantages, the catoptrical angle in the angle of the incident light of light source and zone to be detected can accurately Be Controlled, also possibly receive the interference of extraneous other light simultaneously, detects effect and is still waiting to promote.
The utility model content
First purpose of the utility model provides the color harvester of the better multi-angle of a kind of color collection effect.
Second purpose of the utility model provides a kind of checkout equipment that detects the color shifting ink of better effects if.
For there is a basic understanding some aspects to the embodiment that discloses, provided simple summary below.This summary part is not to comment general, neither confirm the key/critical component or describe the protection domain of these embodiment.Its sole purpose is to present some notions with simple form, with this preamble as the detailed description of back.
The technical scheme of the utility model is achieved in that
A kind of color harvester of multi-angle comprises: shine the light source in zone to be detected on the detected material and utilize the reflected light in zone to be detected to gather first color sensor and second color sensor of the color in zone to be detected; This device also comprises: first guide lighting channel, second guide lighting channel and the 3rd guide lighting channel;
Said first guide lighting channel docks with said light source, and the incident light of said light source is imported zone to be detected with the incident angle of setting;
Said second guide lighting channel docks with said first color sensor, receives the reflected light in zone to be detected and imports said first color sensor with the view angle of said first color sensor;
Said the 3rd guide lighting channel docks with said second color sensor, receives the reflected light in zone to be detected and imports said second color sensor with the view angle of said second color sensor;
The view angle of said first color sensor is different with the view angle of said second color sensor.
Optional, said light source, said first color sensor and said second color sensor are fixed on the circuit board, and all over against the detected material setting.
Optional, said first guide lighting channel, second guide lighting channel and the 3rd guide lighting channel are rectilinear form;
The angle of said first guide lighting channel and detected material normal direction is the incident angle of setting;
The angle of said second guide lighting channel and detected material normal direction is the view angle of first color sensor;
The angle of said the 3rd guide lighting channel and detected material normal direction is the view angle of second color sensor.
Optional, said second guide lighting channel is a rectilinear form, said first guide lighting channel and the 3rd guide lighting channel are curve shape;
Said first guide lighting channel is the incident angle of setting near an end of detected material and the angle of detected material normal direction;
The angle of said second guide lighting channel and detected material normal direction is the view angle of first color sensor;
Said the 3rd guide lighting channel is the view angle of second color sensor near an end of detected material and the angle of detected material normal direction.
Optional; Said light source, said first color sensor and said second color sensor are individually fixed in three independently on the circuit board, and said light source and said second color sensor favour detected material setting, said first color sensor over against the detected material setting.
Optional, said first guide lighting channel, second guide lighting channel and the 3rd guide lighting channel are rectilinear form;
The angle of said first guide lighting channel and detected material normal direction is the incident angle of setting;
The angle of said second guide lighting channel and detected material normal direction is the view angle of first color sensor;
The angle of said the 3rd guide lighting channel and detected material normal direction is the view angle of second color sensor.
Optional, said first guide lighting channel, second guide lighting channel and the 3rd guide lighting channel are intersected in the zone to be detected on the detected material at the end near detected material.
Optional, said first guide lighting channel, second guide lighting channel and the 3rd guide lighting channel, LGP that is formed in one or light transmitting fiber.
Optional, this device also comprises: respectively around the shading passage of said first guide lighting channel, second guide lighting channel and the 3rd guide lighting channel, said shading passage is surrounded by the shading material.
Optional, said first guide lighting channel, second guide lighting channel and the 3rd guide lighting channel are surrounded by the shading material.
Optional, the inside surface of said first guide lighting channel, second catheter channel and the 3rd guide lighting channel is a reflecting surface.
Optional, this device also comprises the shading shell of ccontaining said light source, said first color sensor, said second color sensor, said first guide lighting channel, said second guide lighting channel and said the 3rd guide lighting channel.
Optional, said shading shell does not have shell wall in the side over against detected material.
Optional, said shading shell is a plastics shading shell.
A kind of checkout equipment of color shifting ink, this device comprises:
The color harvester of above-mentioned multi-angle;
Treating apparatus is used for two kinds of colors that the color harvester of many angles collects, and when aberration reaches setting threshold, is judged to be color shifting ink.
It is thus clear that; The color harvester of multi-angle in the utility model; The incident light of light source is via the inner zone to be detected that imports detected material of guide lighting channel, and the reflected light in zone to be detected imports first color sensor and second color sensor respectively via guide lighting channel inside, not only can control incident light and catoptrical angle accurately; Can also avoid the interference of extraneous light simultaneously, promote the accuracy that color is gathered thus.The checkout equipment of color shifting ink in the utility model utilizes the color harvester of above-mentioned multi-angle, thereby has promoted the detection performance.
For above-mentioned and relevant purpose, one or more embodiment will specify the characteristic that particularly points out in claims.Below explanation and accompanying drawing specify some illustrative aspects, and its indication only is some modes in the utilizable variety of way of principle of each embodiment.Other benefit and novel features will consider and become obviously along with following detailed description combine accompanying drawing, and the disclosed embodiments are to comprise being equal to of all these aspects and they.
Description of drawings
Fig. 1 is the structural representation of the color harvester of multi-angle among the utility model embodiment one;
Fig. 2 is the structural representation of the color harvester of multi-angle among the utility model embodiment two;
Fig. 3 is the structural representation of the color harvester of multi-angle among the utility model embodiment three;
Fig. 4 is the structural representation of the checkout equipment of the utility model color shifting ink.
Embodiment
Below description and accompanying drawing illustrate the specific embodiments of the utility model fully, to enable those skilled in the art to put into practice them.Other embodiments can comprise structure, logic, electric, process and other change.Embodiment only represents possible variation.Only if explicitly call for, otherwise independent assembly and function are optional, and the order of operation can change.The part of some embodiments and characteristic can be included in or replace the part and the characteristic of other embodiments.The scope of the embodiment of the utility model comprises the gamut of claims, and all obtainable equivalents of claims.In this article; These embodiments of the utility model can be represented with term " utility model " individually or always; This only is for ease; And if in fact disclose and surpass one utility model, not that the scope that will automatically limit this application is any single utility model or utility model design.
The color harvester of multi-angle in the utility model comprises: first color sensor, second color sensor, light source, first guide lighting channel, second guide lighting channel and the 3rd guide lighting channel.Wherein, the zone to be detected on the light source irradiation detected material, first color sensor and second color sensor utilize the reflected light in zone to be detected to gather the color in zone to be detected.
First guide lighting channel docks with light source, and incident light is imported zone to be detected with the incident angle of setting.
Second guide lighting channel docks with first color sensor, receives the reflected light in zone to be detected and imports first color sensor with the view angle of first color sensor.
The 3rd guide lighting channel docks with second color sensor, receives the reflected light in zone to be detected and imports second color sensor with the view angle of second color sensor.
The view angle of the view angle of first color sensor and second color sensor is inequality.
It is thus clear that the color harvester of multi-angle has the following advantages in the utility model:
1. the incident light of light source is via the inner importing of guide lighting channel zone to be detected; The reflected light in zone to be detected imports first color sensor and second color sensor respectively via guide lighting channel inside; Not only can control incident light and catoptrical angle accurately; Can also avoid the interference of extraneous light simultaneously, promote the accuracy that color is gathered thus;
2. than the mode of using CMOS or CCD camera collection in the past, need not obtain the image in zone to be detected, implement simply, cost is lower, and the rear end calculation process is simple;
3. the incident angle of light and reflection angle relative fixed make that color sensor reception light is comparatively uniform and stable, detect for bank note and use, and receive the paper money situation of walking of bank note in machinery is walked the paper money chamber to influence less;
4. with respect to CMOS or CCD camera, easy for installation, when carrying out the mechanical part design, can assemble also convenient so that structure is more compact.
Provide the embodiment of the color harvester of the utility model multi-angle below.
[embodiment one]
Fig. 1 is the structural representation of the color harvester of multi-angle among the utility model embodiment one, and dashed circle is wherein represented the zone to be detected on the detected material, and solid arrow is represented light path.
Device shown in Figure 1 comprises: color sensor 11, color sensor 12, light source 13, first guide lighting channel 141, second guide lighting channel 142, the 3rd guide lighting channel 143, circuit board 15 and shading shell 16.Detected material is labeled as 17 in Fig. 1.
First guide lighting channel 141, second guide lighting channel 142, the 3rd guide lighting channel 143 are integrated LGP, and LGP is inner to form transmission line, and inside surface is reflecting surface, can be with in the light reflected back passage that will penetrate in the passage.
First guide lighting channel 141, second guide lighting channel 142 and the 3rd guide lighting channel 143 be intersected in the zone to be detected on the detected material 17 at the end center near detected material 17, and these three guide lighting channels all are rectilinear forms.
First guide lighting channel 141 docks with light source 13, with the angle of detected material 17 normal directions be the incident angle of setting.Light source 13 will be passed to zone to be detected through first guide lighting channel, 141 straight-line transmitting with the light of the incident angle incident of setting.Detected material 17 normal directions are meant the direction vertical with detected material 17.
Second guide lighting channel 142 docks with color sensor 11, with the angle of detected material 17 normal directions be the view angle of color sensor 11.Zone to be detected will be passed to color sensor 11 through second guide lighting channel, 142 straight-line transmitting with the light of the view angle reflection of color sensor 11.
The 3rd guide lighting channel 143 docks with color sensor 12, with the angle of detected material 17 normal directions be the view angle of color sensor 12.Zone to be detected will be passed to color sensor 12 through the 3rd guide lighting channel 143 straight-line transmitting with the light of the view angle reflection of color sensor 12.
The view angle here, refer to and with the angle of detected material 17 normal directions.Can find out that the view angle of color sensor 11 is 0 degree, the view angle of color sensor 12 is greater than 0 degree.
The ccontaining light source of shading shell 16 13, color sensor 11, color sensor 12, first guide lighting channel 141, second guide lighting channel 142 and the 3rd guide lighting channel 143.In the present embodiment one, shading shell 16 is the hollow rectangular structure, and does not have shell wall in the side over against detected material 17.
Can find out by above introduction; The color harvester of the multi-angle in the present embodiment one, on the one hand, light source and two color sensors are fixed on the circuit board; Make more compact structure, install more convenient; On the other hand, also be provided with the shading shell, further avoided the interference of extraneous other light in light source, color sensor and guide lighting channel outside.
Optional; Three light transmitting fibers that guide lighting channel also can be formed in one in the present embodiment; Further avoid the interference of extraneous other light if desired; Can also further carry out shading treatment to three guide lighting channels, for example in device, be provided with respectively around the shading passage of three guide lighting channels, this shading passage is surrounded by the shading material.
Optional, three guide lighting channels in the present embodiment also can only be surrounded by the shading material.
[embodiment two]
Fig. 2 is the structural representation of the color harvester of multi-angle among the utility model embodiment two, and dashed circle is wherein represented the zone to be detected on the detected material, and solid arrow is represented light path.
Device shown in Figure 2 comprises: color sensor 21, color sensor 22, light source 23, first guide lighting channel 241, second guide lighting channel 242, the 3rd guide lighting channel 243, circuit board 25, circuit board 26, circuit board 27 and shading shell 28.Detected material among Fig. 2 is with 29 marks.
First guide lighting channel 241, second guide lighting channel 242 and the 3rd guide lighting channel 243 are integrated light transmitting fiber, and light transmitting fiber is inner to form transmission line, and inside surface is reflecting surface, can be with in the light reflected back passage that will penetrate in the passage.
First guide lighting channel 241, second guide lighting channel 242 and the 3rd guide lighting channel 243 are intersected in the zone to be detected on the detected material 29 at the end center near detected material 29, and all are rectilinear forms.
First guide lighting channel 241 docks with light source 23, with the angle of detected material 29 normal directions be the incident angle of setting.Light source 23 is passed to zone to be detected with the light of the incident light incident of setting through first guide lighting channel, 241 straight-line transmitting.
Second guide lighting channel 242 docks with color sensor 21, with the angle of detected material 29 normal directions be the view angle of color sensor 21.Zone to be detected is passed to color sensor 21 with the light of the view angle reflection of color sensor 21 through second guide lighting channel, 242 straight-line transmitting.
The 3rd guide lighting channel 243 docks with color sensor 22, with the angle of detected material 29 normal directions be the view angle of color sensor 22.Zone to be detected is passed to color sensor 22 with the light of the view angle reflection of color sensor 22 through the 3rd guide lighting channel 243 straight-line transmitting.
The view angle here refers to the angle with the direction vertical with detected material 29.Can find out that the view angle of color sensor 21 is 0 degree, the view angle of color sensor 22 is greater than 0 degree.
Shading shell 28 holds light source 23, color sensor 21, color sensor 22, first guide lighting channel 241, second guide lighting channel 242 and the 3rd guide lighting channel 243.In the present embodiment two, shading shell 28 is the hollow rectangular structure, and does not have shell wall in the side over against detected material 29.
Can find out by above introduction; The color harvester of the multi-angle in the present embodiment two, on the one hand, light source and two color sensors are individually fixed in independently on the circuit board; Make zone to be detected receive the irradiation of light source more fully; And make a color sensor receive the reflection ray in zone to be detected more fully, further promoted collection effect, on the other hand; Also be provided with the shading shell in light source, color sensor and three guide lighting channel outsides, further avoided the interference of extraneous other light.
Optional; Three LGPs that guide lighting channel also can be formed in one in the present embodiment; Further avoid the interference of extraneous other light if desired; Can also further carry out shading treatment to three guide lighting channels, for example in device, be provided with respectively around the shading passage of three guide lighting channels, this shading passage is surrounded by the shading material.
Optional, three guide lighting channels in the present embodiment also can only be surrounded by the shading material.
[embodiment three]
Fig. 3 is the structural representation of the color harvester of multi-angle among the utility model embodiment three, and dashed circle is wherein represented the zone to be detected on the detected material.
Device shown in Figure 3 comprises: color sensor 31, color sensor 32, light source 33, first guide lighting channel 341, second guide lighting channel 342, the 3rd guide lighting channel 343, circuit board 35 and shading shell 36.Detected material is with 37 marks in Fig. 3.
Light source 33, color sensor 31 and color sensor 32 all are fixed on the circuit board 35.
First guide lighting channel 341, second guide lighting channel 342 and the 3rd guide lighting channel 343 are integrated LGP, and LGP is inner to form transmission line, and inside surface is reflecting surface, can be with in the light reflected back passage that will penetrate in the passage.
First guide lighting channel 341, second guide lighting channel 342 and the 3rd guide lighting channel 343; End center near detected material 37 is intersected in the zone to be detected on the detected material 37; And first guide lighting channel 341 and the 3rd guide lighting channel 343 are curve shape, and second guide lighting channel 342 is rectilinear forms.
First guide lighting channel 341 docks with light source 33, is the incident angle of setting near an end of detected material 37 and the angle of detected material 37 normal directions.The incident ray of light source 33 imports zone to be detected through the reflection conduction of first guide lighting channel 341 with the incident angle of setting.Can find out that the incident ray of light source 33 is that first guide lighting channel 341 is incided in the front at first.
Second guide lighting channel 342 docks with color sensor 31, with the angle of detected material 37 normal directions be the view angle of color sensor 31.Zone to be detected is passed to color sensor 31 with the light of the view angle reflection of color sensor 31 through second guide lighting channel, 343 straight-line transmitting.
The 3rd guide lighting channel 343 docks with color sensor 32, is the view angle of color sensor 32 near an end of detected material 37 and the angle of detected material 37 normal directions.Conduction is reflected through the 3rd guide lighting channel 343, input color sensor 32 with the light of the view angle reflection of color sensor 32 in zone to be detected.Can find out the final positive incident color sensor 32 of the reflected light in zone to be detected.
Shading shell 36 holds light source 33, color sensor 31, color sensor 32, first guide lighting channel 341, second guide lighting channel 342 and the 3rd guide lighting channel 343.In the present embodiment three, shading shell 36 is the hollow rectangular structure, and does not have shell wall in the side over against detected material 37.
Can find out that by above introduction present embodiment three is equivalent to the compromise of embodiment one and embodiment two schemes, on the one hand; Light source and two color sensors are fixed on the circuit board, make more compact structure, install more convenient; On the other hand, through two guide lighting channels are designed to curve shape, make zone to be detected receive incident light more fully; Make two color sensors all receive the reflected light in zone to be detected fully simultaneously, promoted collection effect.
Optional; Three light transmitting fibers that guide lighting channel also can be formed in one in the present embodiment; Further avoid the interference of extraneous other light if desired; Can also further carry out shading treatment to three guide lighting channels, for example in device, be provided with respectively around the shading passage of three guide lighting channels, this shading passage is surrounded by the shading material.
Optional, three guide lighting channels in the present embodiment also can only be surrounded by the shading material.
Related shading shell among the above embodiment one to embodiment three can be a plastics shading shell.
Fig. 4 is the structural representation of the checkout equipment of the utility model color shifting ink, and this equipment comprises: the color harvester 41 and the treating apparatus 42 of multi-angle.
The color harvester 41 of multi-angle is used for gathering from different perspectives the color in zone to be detected.
Treating apparatus 42 is used for two kinds of colors that the color harvester 41 of many angles collects, and when aberration reaches setting threshold, is judged to be color shifting ink.
The color harvester of the multi-angle that the color harvester 41 of above-mentioned multi-angle can the utility model preamble be introduced is realized; Concrete; The color harvester 41 of multi-angle can have the structure among the preamble embodiment one to embodiment three, and wherein the color in two color sensors zone to be detected that will collect respectively sends to treating apparatus 42.
For making any technician in this area can realize or use the utility model, above disclosed embodiment is described.To those skilled in the art, the various alter modes of these embodiment all are conspicuous, and the General Principle of this paper definition also can be applicable to other embodiment on the basis that does not break away from spirit of the present disclosure and protection domain.Therefore, the disclosure is not limited to the embodiment that this paper provides, but consistent with the widest scope of disclosed principle of the application and novel features.
Claims (15)
1. the color harvester of a multi-angle comprises: shine the light source in zone to be detected on the detected material and utilize the reflected light in zone to be detected to gather first color sensor and second color sensor of the color in zone to be detected; It is characterized in that this device also comprises: first guide lighting channel, second guide lighting channel and the 3rd guide lighting channel;
Said first guide lighting channel docks with said light source, and the incident light of said light source is imported zone to be detected with the incident angle of setting;
Said second guide lighting channel docks with said first color sensor, receives the reflected light in zone to be detected and imports said first color sensor with the view angle of said first color sensor;
Said the 3rd guide lighting channel docks with said second color sensor, receives the reflected light in zone to be detected and imports said second color sensor with the view angle of said second color sensor;
The view angle of said first color sensor is different with the view angle of said second color sensor.
2. device as claimed in claim 1 is characterized in that, said light source, said first color sensor and said second color sensor are fixed on the circuit board, and all over against the detected material setting.
3. device as claimed in claim 2 is characterized in that, said first guide lighting channel, second guide lighting channel and the 3rd guide lighting channel are rectilinear form;
The angle of said first guide lighting channel and detected material normal direction is the incident angle of setting;
The angle of said second guide lighting channel and detected material normal direction is the view angle of first color sensor;
The angle of said the 3rd guide lighting channel and detected material normal direction is the view angle of second color sensor.
4. device as claimed in claim 2 is characterized in that, said second guide lighting channel is a rectilinear form, and said first guide lighting channel and the 3rd guide lighting channel are curve shape;
Said first guide lighting channel is the incident angle of setting near an end of detected material and the angle of detected material normal direction;
The angle of said second guide lighting channel and detected material normal direction is the view angle of first color sensor;
Said the 3rd guide lighting channel is the view angle of second color sensor near an end of detected material and the angle of detected material normal direction.
5. device as claimed in claim 1; It is characterized in that; Said light source, said first color sensor and said second color sensor are individually fixed in three independently on the circuit board, and said light source and said second color sensor favour detected material setting, said first color sensor over against the detected material setting.
6. device as claimed in claim 5 is characterized in that, said first guide lighting channel, second guide lighting channel and the 3rd guide lighting channel are rectilinear form;
The angle of said first guide lighting channel and detected material normal direction is the incident angle of setting;
The angle of said second guide lighting channel and detected material normal direction is the view angle of first color sensor;
The angle of said the 3rd guide lighting channel and detected material normal direction is the view angle of second color sensor.
7. device as claimed in claim 1 is characterized in that, said first guide lighting channel, second guide lighting channel and the 3rd guide lighting channel are intersected in the zone to be detected on the detected material at the end near detected material.
8. like claim 1 or 7 described devices, it is characterized in that said first guide lighting channel, second guide lighting channel and the 3rd guide lighting channel, LGP that is formed in one or light transmitting fiber.
9. device as claimed in claim 8 is characterized in that, this device also comprises: respectively around the shading passage of said first guide lighting channel, second guide lighting channel and the 3rd guide lighting channel, said shading passage is surrounded by the shading material.
10. like claim 1 or 7 described devices, it is characterized in that said first guide lighting channel, second guide lighting channel and the 3rd guide lighting channel are surrounded by the shading material.
11., it is characterized in that the inside surface of said first guide lighting channel, second catheter channel and the 3rd guide lighting channel is a reflecting surface like claim 1 or 7 described devices.
12. device as claimed in claim 1; It is characterized in that this device also comprises the shading shell of ccontaining said light source, said first color sensor, said second color sensor, said first guide lighting channel, said second guide lighting channel and said the 3rd guide lighting channel.
13. device as claimed in claim 12 is characterized in that, said shading shell does not have shell wall in the side over against detected material.
14. device as claimed in claim 12 is characterized in that, said shading shell is a plastics shading shell.
15. the checkout equipment of a color shifting ink is characterized in that, this device comprises:
Color harvester like each described multi-angle of claim 1 to 14;
Treating apparatus is used for two kinds of colors that the color harvester of many angles collects, and when aberration reaches setting threshold, is judged to be color shifting ink.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201120503033XU CN202372256U (en) | 2011-12-06 | 2011-12-06 | Multi-angle color collecting device and detection device of color-shifting ink |
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| CN201120503033XU CN202372256U (en) | 2011-12-06 | 2011-12-06 | Multi-angle color collecting device and detection device of color-shifting ink |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014060359A1 (en) * | 2012-10-15 | 2014-04-24 | Innovia Films Limited | Detection of the presence of an item using reflection characteristics |
| CN104065850A (en) * | 2014-07-01 | 2014-09-24 | 威海华菱光电股份有限公司 | Oblique light plate and contact-type image sensor possessing same |
| CN104077839A (en) * | 2013-03-29 | 2014-10-01 | 深圳贝斯特机械电子有限公司 | Bracket structure for collecting banknote color-changing ink signals |
| CN104794800A (en) * | 2015-05-06 | 2015-07-22 | 厦门大学 | Method and device for RMB optically variable ink recognition based on optical filter |
| WO2019232754A1 (en) * | 2018-06-07 | 2019-12-12 | 深圳市柔宇科技有限公司 | Stylus, handwriting input device, and page locating method |
-
2011
- 2011-12-06 CN CN201120503033XU patent/CN202372256U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014060359A1 (en) * | 2012-10-15 | 2014-04-24 | Innovia Films Limited | Detection of the presence of an item using reflection characteristics |
| US9626557B2 (en) | 2012-10-15 | 2017-04-18 | Innovia Films Limited | Detection of the presence of an item using reflection characteristics |
| CN104077839A (en) * | 2013-03-29 | 2014-10-01 | 深圳贝斯特机械电子有限公司 | Bracket structure for collecting banknote color-changing ink signals |
| CN104077839B (en) * | 2013-03-29 | 2016-08-31 | 深圳贝斯特机械电子有限公司 | A kind of supporting structure gathering bank note color shifting ink signal |
| CN104065850A (en) * | 2014-07-01 | 2014-09-24 | 威海华菱光电股份有限公司 | Oblique light plate and contact-type image sensor possessing same |
| CN104794800A (en) * | 2015-05-06 | 2015-07-22 | 厦门大学 | Method and device for RMB optically variable ink recognition based on optical filter |
| WO2019232754A1 (en) * | 2018-06-07 | 2019-12-12 | 深圳市柔宇科技有限公司 | Stylus, handwriting input device, and page locating method |
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