CN102014234A - Contact image sensor - Google Patents
Contact image sensor Download PDFInfo
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- CN102014234A CN102014234A CN2010106000454A CN201010600045A CN102014234A CN 102014234 A CN102014234 A CN 102014234A CN 2010106000454 A CN2010106000454 A CN 2010106000454A CN 201010600045 A CN201010600045 A CN 201010600045A CN 102014234 A CN102014234 A CN 102014234A
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Abstract
The invention discloses a contact image sensor for reading an anti-fake mark made by photochromic ink or other anti-fake marks or image information in need of different reading angles. The contact image sensor comprises a light-transmitting plate, a sensor substrate and a frame, wherein, the sensor substrate carries a photosensitive part which is arranged in a straight line, and the photosensitive part on the sensor substrate is equipped with a lens; and the frame can accommodate the sensor substrate and the lens. The contact image sensor is characterized by further comprising a support frame, wherein, the support frame is equipped with the light-transmitting plate and a rotating device; and a light source is independently arranged outside the frame, a light source seat is connected with the rotating device, and the rotating device can adjust the incident angle of the light source relative to the light-transmitting plate. In the invention, by adjusting the rotating device, the light from the light source is emitted at a required angle and then irradiates the original copy through the light-transmitting plate, the light irradiating the original copy is reflected back to the light-transmitting plate by the original copy, then the reflected light enters the lens and is collected on the photosensitive part, and the angle is the needed angle for reading the anti-fake mark made by the photochromic ink or other anti-fake marks or image information in need of different reading angles; and by adjusting different angles, the photosensitive part can obtain different color information and make comparisons so as to achieve the purpose of identifying the authenticity.
Description
Technical field
The present invention relates to a kind of image read-out, particularly a kind of anti-fake mark and the anti-fake mark of the different reading angulars of other needs or contact-type image sensor of making by color shifting ink of image information that can read.
Background technology
We know that the color changeable effect of optical disclour printing ink is to be produced by the optically variable pigments in the printing ink.The main component of optically variable pigments is the optic metachromatic film fragments with certain spectroscopic characteristics.The optic metachromatic film is to come out according to the interference of light principle design of plural layers; It has the material of multiple different refractivity, is deposited on the identical carrier successively to form.Its reflectance spectrum can change with the change of incidence angle; Promptly along with the variation of viewing angle, color shifting ink can present different colors.Hence one can see that, wants to discern the anti-fake mark that color shifting ink is made, and must change incident angle.
Fig. 1 is the sectional drawing of existing contact-type image sensor, 1 is illuminating source among the figure, the 5th, lens, the 4th, the photographic department (photosensitive integrated circuit) of receiver lens 5 light that converges, the 3rd, the sensor base plate of the photosensitive integrated circuit 4 that lift-launch is arranged in a straight line, the 2nd, hold the framework of light source 1, lens 5, sensor base plate 3,6 are arranged on the light-passing board of the lift-launch original copy on the framework 2, and 7 is original copy.
In above-mentioned contact-type image sensor, light-passing board 6 is fixed on the framework 2, the axis of the lens 5 in light-passing board 6 and the framework 2 is vertical configuration, be parallel shape with sensor base plate 3, light source 1 be provided with two kinds, a kind of is to be provided with the closed pockets that holds light source 1 on framework 6, closed pockets is provided with relative light-passing board and is light inlet window about 45 °, the wide part that light source 1 sends sees through light inlet window with about 45, light-passing board 6, shine on the original copy 7 of outside, another kind is to be provided with the groove that holds light source 1 on framework 6, be provided with light source 1 in the groove, light source 1 is made up of light source and leaded light post, leaded light post and light-passing board are about 45 °, light source sees through light-passing board 6 through the light that the leaded light post sends with about 45, shine on the original copy 7 of outside, lens 5 are vertical configuration with light-passing board 6, as mentioned above, the wide part that light source 1 sends sees through light-passing board 6 with about 45, shine on the original copy 7 of outside, character area light on the original copy 7 is partially absorbed, and be reflected at the light of other white portion of original copy, because reflection, refraction, factors such as scattering cause these reverberation to comprise the light of various angles, these reverberation pass light-passing board 6, collected by lens 5, shine the photosensitive area of the photographic department 4 on the sensor base plate 3, photographic department 4 be by many photosensitive areas and can will shine the light of each photosensitive area carry out opto-electronic conversion, and the drive circuit of signal output formed, the light that receives converts the signal of telecommunication to after overdrive circuit output, outwards export as image (literal) information, original copy constantly moves, and the image information of being put down in writing on it (literal) will be read continuously.
Have following problem in the above-mentioned contact-type image sensor: the light that light source sends enters light-passing board with about 45 ° angle, shines then on the original copy, and original copy reflects away these light, and reverberation just enters lens, is pooled on the photographic department.It is characterized in that: the relative position of light source and light-passing board remains unchanged, and therefore, light source also can remain unchanged with respect to the relative position of original copy.And we know, the anti-fake mark that color shifting ink is made can be observed different colors from different directions, if with fixing incident angle irradiation color shifting ink, just can't read different colouring informations.So existing contact-type image sensor can't be discerned the anti-fake mark that color shifting ink is made.
Summary of the invention
Technical problem to be solved by this invention is: change light source by rotation and change the incidence angle of existing contact-type image sensor light with respect to the incident angle of light-passing board, proposes a kind ofly can read anti-fake mark and the anti-fake mark of the different reading angulars of other needs or the contact-type image sensor of image information that color shifting ink is made.
The present invention can reach by following measure:
A kind of contact-type image sensor, comprise light-passing board, sensor base plate, carry the photographic department that is arranged in a straight line on the sensor base plate, be provided with lens above the photographic department on the sensor base plate, contact-type image sensor also comprises the framework that can hold the sensor substrate, lens, it is characterized in that being provided with bracing frame, bracing frame is provided with light-passing board, whirligig, light source is independent of outside the framework, light source is connected with light source base, light source base is connected with whirligig, can adjust the incident angle of light source with respect to light-passing board by whirligig.
Whirligig of the present invention is axis (center line) rotation with the focal position of lens axis and light-passing board, can adjust the incident angle of light source with respect to light-passing board so that light source with different angular illumination to original copy.
Whirligig of the present invention is arranged on the top of lens, and light source base is connected with whirligig, to adjust the incident angle of light source with respect to light-passing board, make light source with different angular illumination to original copy.
Whirligig of the present invention is arranged on the frame facet that can hold the sensor substrate, lens, light source base is connected with whirligig, whirligig can be located at a side of framework, also can be provided with whirligig in the both sides of framework, whirligig is axis (center) rotation with the focal position of lens axis and light-passing board, can adjust the incident angle of light source with respect to light-passing board so that light source with different angular illumination to original copy.
Whirligig of the present invention comprises bearing pedestal, bearing, rotating shaft, on the rotating shaft indexing mechanism can be set, manually to control the angle of light source and light-passing board, rotating shaft also can be connected with motor through transmission device, motor is connected with control device through the numerical control line, framework and light-passing board maintain static, bracing frame is provided with bearing pedestal, rotating shaft is connected with bearing pedestal through bearing, light source base is fixed on the rotating shaft, rotate rotating shaft and can make the light source rotation, to adjust the incident angle of the relative light-passing board of light source.
Whirligig of the present invention comprises arc-shaped guide rail, transmission mechanism and driving mechanism are formed, arc-shaped guide rail is arranged on through bracing frame can hold the sensor substrate, the frame facet of lens, the kind of transmission mechanism and driving mechanism is a lot, one of them is that transmission mechanism comprises rack and pinion, driving mechanism is a motor, gear is connected with light source base through connecting rod, gear shaft is connected with motor, motor is connected with control device through the numerical control line, framework and light-passing board maintain static, by manual or electronic rotary teeth wheel shaft, gear is moved along arc-shaped guide rail along tooth bar rotation light source base, reach the light source rotation, adjust the incident angle of the relative light-passing board of light source.
Arbitrary source of the present invention can be made up of luminescence chip and leaded light post, also can form by led array, by adjusting whirligig, the light that light source sends will penetrate with the angle that requires, see through light-passing board and shine on the original copy, shine light on the original copy by original copy reflected back light-passing board, these reverberation can enter lens and be pooled on the photographic department, and this angle reads the needed angle of color shifting ink anti-counterfeiting mark exactly, by adjusting different angles, photographic department just can obtain different colouring informations and make comparison, thereby reaches the purpose of distinguishing true from false.
Description of drawings:
Fig. 1 is the sectional drawing of existing contact-type image sensor.
Fig. 2 is a kind of structural representation of the present invention.
Fig. 3 is an another kind of structural representation of the present invention.
Fig. 4 another structural representation of the present invention.
Fig. 5 another structural representation of the present invention.
Mark among the figure: light source base 1, framework 2, sensor base plate 3, photographic department 4, lens 5, light-passing board 6, original copy 7, drive unit 8, transmission device 9, bearing 10, bearing pedestal 11, power transmission shaft 12, connecting plate 13, original document feeder 14, bracing frame 15, arc-shaped guide rail 16, gear 17.
Embodiment.
Below in conjunction with accompanying drawing the present invention is further described.
A kind of contact-type image sensor, comprise light-passing board, sensor base plate, carry the photographic department that is arranged in a straight line on the sensor base plate, be provided with lens above the photographic department on the sensor base plate, contact-type image sensor also comprises can hold the sensor substrate, the framework of lens, said structure and connected mode are same as the prior art, this does not give unnecessary details, the invention is characterized in and be provided with bracing frame, light-passing board is supported by bracing frame, and light source is independent of outside the framework, and light source is connected with light source base, light source base is connected with whirligig, can adjust the incident angle of light source with respect to light-passing board by whirligig.
Whirligig of the present invention is arranged on the top of lens, and light source base is connected with whirligig, and whirligig is axis (center line) rotation with the focal position of lens axis and light-passing board so that light source with different angular illumination to original copy.
Whirligig of the present invention is arranged on and can holds the sensor substrate, the frame facet of lens, whirligig can be the side setting at framework, also can all be provided with in the both sides of framework, whirligig can be arranged on the light-passing board downside, frame facet, also can be arranged on the upside of light-passing board, frame facet, light source base is connected with whirligig, whirligig is axis (center line) rotation with the focal position of lens axis and light-passing board, can adjust the incident angle of light source with respect to light-passing board so that light source with different angular illumination to original copy.
Whirligig of the present invention comprises bearing pedestal, bearing, rotating shaft, on the rotating shaft indexing mechanism can be set, manually to control the angle of arbitrary source and light-passing board, rotating shaft also can be connected with motor through transmission device, motor is connected with control device through the numerical control line, light source base is fixed on the rotating shaft, rotates rotating shaft and can make the light source rotation, to adjust the incident angle of the relative light-passing board of light source.
Whirligig of the present invention comprises arc-shaped guide rail, transmission mechanism and driving mechanism are formed, arc-shaped guide rail is located by bracing frame, the kind of transmission mechanism and driving mechanism is a lot, one of them is that transmission mechanism comprises rack and pinion, driving mechanism is a motor, gear is connected with light source base through connecting rod, gear shaft is connected with motor, and motor is connected with control device through the numerical control line, and framework and light-passing board maintain static, by manual or electronic rotary teeth wheel shaft, gear is moved along arc-shaped guide rail along tooth bar rotation light source base, reach the light source rotation, adjust the incident angle of the relative light-passing board of light source.
Light source of the present invention can be made up of light source and leaded light post, also can form by led array, through adjusting whirligig, the light that light source sends will penetrate with the angle that requires, see through light-passing board and shine on the original copy, shine light on the original copy by original copy reflected back light-passing board, these reverberation can enter lens and be pooled on the photographic department, and this angle reads the needed angle of color shifting ink anti-counterfeiting mark exactly, by adjusting different angles, photographic department just can obtain different colouring informations and make comparison, thereby reaches the purpose of distinguishing true from false.
Be one embodiment of the present of invention as shown in Figure 2, the 1st, light source base, the 5th, lens, the 4th, the photographic department of receiver lens 2 light that converges, it is photosensitive integrated circuit, the 3rd, the sensor base plate of the photosensitive integrated circuit that lift-launch is arranged in a straight line, the 2nd, hold the framework of lens 5, sensor base plate 3,6 are arranged on the light-passing board of the lift-launch original copy on framework 2 tops, and the 7th, the original copy, the 8th that need scan, drive unit, the 9th, transmission device, the 10th, bearing, the 11st, bearing pedestal, the 12nd, rotating shaft, the 13rd, connecting plate, the 14th, original document feeder, the 15th, bracing frame.The structure of above-mentioned each part of the present invention and the main distinction of prior art are: the light source of contact-type image sensor is not to be positioned in the framework, but be independent of outside the framework, rotate through belt or gear driven rotating shaft 12 by drive unit 8, drive unit 8 can adopt manually, also can adopt electronic, and rotating shaft 12 couples together by connecting plate 13 and independent light source(-)holder 1, is rotated so drive unit 8 can drive independent light source(-)holder 1.By rotation, light-passing board 6 just can change with the angle of arbitrary source like this.Under different angles, the light that arbitrary source sends will shine with different incidence angles on the original copy 7, will be collected and shine on the photographic department 4 by lens 5 through the light that the color shifting ink on the original copy 7 reflects.Spectral information after the light that incidence angle is different is reflected by color shifting ink is just different.The signal of telecommunication that different spectral informations is changed out is also different, through relatively, just can reach the purpose of distinguishing true from false.
Embodiment shown in the accompanying drawing 2 is fixed in light-passing board 6 on the bracing frame 15, light-passing board 6 is provided with original document feeder, original document feeder is same as the prior art, and this does not give unnecessary details, and drive unit is rotated by transmission device drive independent light source(-)holder 1 and changes angle.
The adjustment of incidence angle needs to regulate according to the color shifting ink anti-counterfeiting mark that reads.The adjusting of angle can be controlled automatically, also can manually control according to structure, needs.
Be another embodiment of the present invention shown in the accompanying drawing 3, the 1st, light source base, the 5th, lens, the 4th, the photographic department of receiver lens 2 light that converges, it is photosensitive integrated circuit, the 3rd, the sensor base plate of the photosensitive integrated circuit that lift-launch is arranged in a straight line, the 2nd, the framework of lens 5, sensor base plate 3,6 are arranged on the light-passing board of the lift-launch original copy on framework 2 tops, and the 7th, the original copy, the 8th that need scan, drive unit, the 9th, transmission device, the 10th, bearing, the 11st, bearing pedestal, the 12nd, rotating shaft, the 13rd, connecting plate, the 14th, original document feeder, the 15th, bracing frame.Present embodiment is that light-passing board 6 is fixed on the bracing frame 15, be respectively equipped with arbitrary source 1 in the both sides of framework, two light source bases 1 are connected with driving shaft 12 by link 13 respectively, and drive unit 8 drives arbitrary source 1 by transmission device 9 and is rotated the angle that changes with light-passing board.Two light source bases are to control by drive system independently, so the angle of two light sources can arbitrarily be adjusted as required.The advantage of this scheme is: if two light sources are adjusted to same angle, can strengthen light intensity, improve resolving effect.If adjust to different angles respectively, just can improve sweep speed, raise the efficiency.
Be an embodiment more of the present invention shown in the accompanying drawing 4, present embodiment is to adopt led array as arbitrary source.Its advantage be for can obviously improve light intensity, simultaneously can simplified structure, dwindle the volume of arbitrary source, and increase the angular range that rotation is adjusted.
Accompanying drawing 5 is embodiment more of the present invention, 1 is light source base among the figure, the 5th, lens, the 4th, the photographic department of receiver lens 2 light that converges, it is photosensitive integrated circuit, the 3rd, the sensor base plate of the photosensitive integrated circuit that lift-launch is arranged in a straight line, the 2nd, hold lens 5, the framework of sensor base plate 3,6 are arranged on the light-passing board of the lift-launch original copy on framework 2 tops, the 7th, need the original copy that scans, the 8th, drive unit, the 9th, transmission device, the 14th, original document feeder, the 15th, bracing frame, arc-shaped guide rail 16, gear 17, the structure of above-mentioned each part of the present invention and the main distinction of prior art are: the light source of contact-type image sensor is not to be positioned in the framework, but be independent of outside the framework, whirligig comprises arc-shaped guide rail 16, transmission mechanism and driving mechanism are formed, arc-shaped guide rail 16 is by bracing frame 15 location, the kind of transmission mechanism and driving mechanism is a lot, one of them is that transmission mechanism comprises rack and pinion 17, driving mechanism is a motor, gear is connected with light source base through connecting rod, gear shaft is connected with motor, motor is connected with control device through the numerical control line, framework and light-passing board maintain static, by manual or electronic rotary teeth wheel shaft, gear is moved along arc-shaped guide rail along tooth bar rotation light source base, reach the light source rotation, adjust the incident angle of the relative light-passing board of light source.
Whirligig of the present invention can be the side setting at framework, also can all be provided with in the both sides of framework, whirligig can be arranged on the light-passing board downside, frame facet, also can be arranged on the upside of light-passing board, frame facet, light source base is axis (center line) rotation through whirligig with the focal position of lens axis and light-passing board, make light source with different angular illumination literal or image at lens axis and place, light-passing board focal position to the original copy, the light that light source sends will penetrate with the angle that requires, see through light-passing board and shine on the original copy, shine light on the original copy by original copy reflected back light-passing board, these reverberation can enter lens and be pooled on the photographic department, and this angle reads the needed angle of color shifting ink anti-counterfeiting mark exactly, by adjusting different angles, photographic department just can obtain different colouring informations and make comparison, thereby reaches the purpose of distinguishing true from false.
Claims (10)
1. contact-type image sensor, comprise light-passing board, sensor base plate, carry the photographic department that is arranged in a straight line on the sensor base plate, be provided with lens above the photographic department on the sensor base plate, contact-type image sensor also comprises the framework that can hold the sensor substrate, lens, it is characterized in that being provided with bracing frame, bracing frame is provided with light-passing board, whirligig, light source is independent of outside the framework, light source base is connected with whirligig, can adjust the incident angle of light source with respect to light-passing board by whirligig.
2. a kind of contact-type image sensor according to claim 1 is characterized in that described whirligig is that focal position with lens axis and light-passing board is the axis rotation.
3. according to claim 1,2 described a kind of contact-type image sensors, it is characterized in that described whirligig is arranged on the top of lens, light source base is connected with whirligig.
4. according to claim 1,2 described a kind of contact-type image sensors, it is characterized in that described whirligig is arranged on the frame facet that can hold the sensor substrate, lens, light source base is connected with whirligig, and whirligig is the axis rotation with the focal position of lens axis and light-passing board.
5. a kind of contact-type image sensor according to claim 3 is characterized in that described whirligig comprises bearing pedestal, bearing, rotating shaft, is provided with indexing mechanism on the rotating shaft.
6. a kind of contact-type image sensor according to claim 3 is characterized in that described whirligig comprises bearing pedestal, bearing, rotating shaft, and rotating shaft is connected with motor through transmission device, and motor is connected with control device through the numerical control line.
7. a kind of contact-type image sensor according to claim 4 is characterized in that whirligig comprises arc-shaped guide rail, and transmission mechanism and driving mechanism are formed.
8. a kind of contact-type image sensor according to claim 7, it is characterized in that arc-shaped guide rail is arranged on the frame facet that can hold the sensor substrate, lens through bracing frame, transmission mechanism comprises rack and pinion, driving mechanism is a motor, gear is connected with light source base through connecting rod, and the rotating shaft of whirligig overlaps substantially with the lens focus position.
9. according to claim 1,2 described a kind of contact-type image sensors, it is characterized in that the light-passing board top is provided with original document feeder.
10. a kind of contact-type image sensor according to claim 1 is characterized in that described bracing frame is connected with framework.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106000454A CN102014234A (en) | 2010-12-22 | 2010-12-22 | Contact image sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106000454A CN102014234A (en) | 2010-12-22 | 2010-12-22 | Contact image sensor |
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| CN102014234A true CN102014234A (en) | 2011-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106000454A Pending CN102014234A (en) | 2010-12-22 | 2010-12-22 | Contact image sensor |
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| CN102739906A (en) * | 2012-06-28 | 2012-10-17 | 威海华菱光电股份有限公司 | Contact image sensor |
| CN102984425A (en) * | 2012-12-18 | 2013-03-20 | 威海华菱光电股份有限公司 | Contact-type image sensor for hologram image information identification |
| CN103002192A (en) * | 2012-12-10 | 2013-03-27 | 威海华菱光电股份有限公司 | Image recognition device and image reading device |
| CN106899778A (en) * | 2015-12-18 | 2017-06-27 | 鹤立精工股份有限公司 | Multiplexing light source line scanning module |
| CN103778421B (en) * | 2012-10-18 | 2018-01-12 | 中芯国际集成电路制造(上海)有限公司 | Read the method and Wafer identification reading device of Wafer identification |
| CN111567025A (en) * | 2018-01-31 | 2020-08-21 | 惠普发展公司，有限责任合伙企业 | Rotatable scanner image sensor in sealed housing |
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Application publication date: 20110413 |