CN102801891A - Contact-type image sensor - Google Patents
Contact-type image sensor Download PDFInfo
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- CN102801891A CN102801891A CN2012103206365A CN201210320636A CN102801891A CN 102801891 A CN102801891 A CN 102801891A CN 2012103206365 A CN2012103206365 A CN 2012103206365A CN 201210320636 A CN201210320636 A CN 201210320636A CN 102801891 A CN102801891 A CN 102801891A
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- contact
- image sensor
- type image
- light beam
- optical lens
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- 230000003287 optical effect Effects 0.000 claims abstract description 37
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 230000005693 optoelectronics Effects 0.000 claims description 20
- 238000007639 printing Methods 0.000 claims description 10
- 239000000758 substrate Substances 0.000 abstract 2
- 230000003760 hair shine Effects 0.000 description 10
- 239000002390 adhesive tape Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 206010070834 Sensitisation Diseases 0.000 description 2
- 238000003854 Surface Print Methods 0.000 description 2
- 230000008313 sensitization Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The invention discloses a contact-type image sensor, which comprises a frame playing a support role. An optical lens is arranged in the frame, a light source is arranged at the side surface of the optical lens, a circuit substrate is arranged below the lens, a photoelectric conversion chip is arranged on the circuit substrate, and a transparent plate is arranged above the lens. The contact-type image sensor is characterized in that an external light beam shielding component is arranged on the transparent; when the contact-type image sensor works under the state that surrounding spaces are not completely enclosed, a light beam emitted by the light source irradiates on an manuscript through the transparent plate, a part of reflecting light on the scanned manuscript enters the optical lens through the transparent plate, the reflecting light from the other end of the optical lens irradiates on the photoelectric conversion chip, the photoelectric conversion chip converts received optical signals into electric signals, and external natural light is shielded by the external light shielding component arranged on the transparent plate and cannot enter the optical lens, thereby not generating interference on the reflecting light beams of the manuscript and not influencing the scanning result of the contact-type image sensor.
Description
Technical field
The present invention relates to sensor technical field, is a kind of contact-type image sensor that the light-blocking part article are set on transparent panel specifically.
Background technology
We know that the existing contact image sensor architecture is as shown in Figure 1, and it is provided with passive framework 1; Be provided with optical lens 2 in the framework 1, the side of optical lens 2 is provided with light source 3, and the top of lens 2 is provided with transparent panel 4; The below of lens 2 is provided with wiring board 6, be positioned on the wiring board 6 lens 2 under be provided with opto-electronic conversion chip 5, opto-electronic conversion chip 5 top surfaces are provided with the sensitization form; Inside is provided with circuit, and the function of opto-electronic conversion chip 5 is to convert light signal to the signal of telecommunication.The contact-type image sensor operation principle is as shown in Figure 2, and the light beam A that light source 3 sends sees through transparent panel 4 and shines on the original copy; Image on the original copy, literal etc. produce folded light beam B; These folded light beams B passes transparent panel 4 again, gets into optical lens 2, and the reverberation that comes out from optical lens 2 other ends shines on the sensitization form of opto-electronic conversion chip 5; Opto-electronic conversion chip 5 converts the light signal that receives to the signal of telecommunication; Original copy constantly moves, and the image of being put down in writing on it, Word message will be read continuously, accomplishes the image information scanning process of original copy.
When working under the existing contact imageing sensor state that the space is not exclusively sealed around; The extraneous natural light beam C and the D of existing contact-type image sensor both sides can get into optical lens 2 in as shown in Figure 3; Folded light beam B to original copy among Fig. 2 exerts an influence, and especially along with the fast development of integrated circuit technique, the sensitivity of opto-electronic conversion chip 5 is increasingly high; Contact-type image sensor manufacturer is in order to save the light source 3 that cost adopts low-light level; The light quantity step-down of the light beam A that light source 3 sends causes the light quantity of folded light beam B of original copy also more and more lower, and the light quantity of extraneous natural light beam C and D will seriously be disturbed the folded light beam B of original copy; Cause opto-electronic conversion chip 5 can't detect real original copy information, thereby influence quality of scanning; Along with financial false distinguishing Equipment of Development; The method for using of two contact-type image sensor relative scanning is more and more general; Receive the inner space restriction of scanning device; The installation of two imageing sensors sometimes can't accomplish not produce each other interference; At this moment the light that sends of contact-type image sensor light source will be as extraneous natural light beam, the folded light beam of another one contact-type image sensor original copy is produced disturb, and the scanning influence that therefore how to solve extraneous natural light beam butt joint touch imageing sensor is of great immediate significance.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of light-blocking part article that on transparent panel, are provided with are provided, prevent the contact-type image sensor that extraneous natural light beam exerts an influence to the folded light beam of original copy.
The present invention can reach through following measure.
A kind of contact-type image sensor comprises passive framework, is provided with optical lens in the framework; The side of optical lens is provided with light source; The below of lens is provided with circuit base plate, be positioned on the circuit base plate lens under be provided with the opto-electronic conversion chip, the top of lens is provided with transparent panel; It is characterized in that on the transparent panel of contact-type image sensor, being provided with extraneous light beam occlusion part article; Preventing that the light beam beyond the light source from getting into lens, the space is not exclusively during the state work of sealing around when contact-type image sensor, and the light beam that light source sends sees through transparent panel and shines on the original copy; A part of folded light beam on the scan manuscript sees through transparent panel and gets into optical lens; The reverberation that comes out from the optical lens other end shines on the opto-electronic conversion chip, and the opto-electronic conversion chip converts the light signal that receives to the signal of telecommunication, and extraneous natural light beam can not get into optical lens because of receiving the stopping of light-blocking part article that is provided with on the transparent panel; Can not produce and disturb, influence the scanning result of contact-type image sensor the folded light beam of original copy.
The extraneous light beam occlusion part article color that is arranged among the present invention on the contact type temperature sensor transparent panel is a black.
The extraneous light beam occlusion part article length that is arranged among the present invention on the contact type temperature sensor transparent panel is longer than the sweep length of contact-type image sensor.
The extraneous light beam occlusion part article that are arranged among the present invention on the contact type temperature sensor transparent panel can be arranged to multistage.
The extraneous light beam occlusion part article on the contact type temperature sensor transparent panel of being arranged among the present invention can be arranged on the upper surface of transparent panel, also can be arranged on the lower surface of transparent panel.
Being arranged on the light-blocking part article printing-ink on transparent panel on the contact type temperature sensor transparent panel among the present invention, also can be Continuous pressing device for stereo-pattern on transparent panel.
The invention has the beneficial effects as follows; When contact-type image sensor space not exclusively during the state work of sealing around; Extraneous natural light beam can not get into optical lens because of receiving the stopping of extraneous light beam occlusion part article that is provided with on the transparent panel, can not produce the folded light beam of original copy and disturb; During two contact-type image sensor relative scanning; Light-blocking part article on contact-type image sensor transparent panel can stop the light beam that another one contact-type image sensor light source sends; Prevent that its original copy folded light beam to oneself from producing interference, influences scanning result.
Description of drawings
Fig. 1 is the generalized section of existing contact-type image sensor.
The beam course sketch map that light source own sent when Fig. 2 scanned for existing contact-type image sensor.
The route sketch map of external interference light beam when Fig. 3 scans for existing contact-type image sensor.
Fig. 4 is the sketch map of the embodiment of the invention 1.
Fig. 5 is the front schematic view of contact-type image sensor in the embodiment of the invention 1.
Fig. 6 is the sketch map of the embodiment of the invention 2.
Fig. 7 is the sketch map of the embodiment of the invention 3.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
Embodiment 1: as shown in Figure 4; A kind of contact-type image sensor comprises passive framework 1, is provided with optical lens 2 in the framework 1, and the side of optical lens 2 is provided with light source 3; The below of lens 2 is provided with circuit base plate 6; Be positioned on the circuit base plate 6 lens 2 under be provided with opto-electronic conversion chip 5, the top of lens 2 is provided with transparent panel 4, said structure and interconnected relationship are identical with prior art; This does not give unnecessary details; Characteristic of the present invention is to be printed with black printing ink 7 and the black printing ink 8 that is in the light that is in the light respectively in the corresponding optical lens of transparent panel upper surface 2 both sides, and is as shown in Figure 5, and black the be in the light length of printing ink 8 of printing ink 7 and black that is in the light is longer than the sweep length of contact-type image sensor.When contact-type image sensor space not exclusively during the state work of sealing around; The light beam A that light source 3 sends sees through transparent panel 4 and shines on the original copy; A part of folded light beam B on the scan manuscript sees through transparent panel and gets into optical lens 2; The reverberation that comes out from optical lens 2 other ends shines on the opto-electronic conversion chip 5, and opto-electronic conversion chip 5 converts the light signals that receive to the signal of telecommunication, and extraneous natural light beam C and D can not get into optical lens 2 because of the black that receives transparent panel 4 upper surface printings printing ink 7 and black stopping of printing ink 8 of being in the light of being in the light; Can not produce and disturb, influence the scanning result of contact-type image sensor the folded light beam B of original copy.
Embodiment 2: as shown in Figure 6; A kind of contact-type image sensor comprises passive framework 1; Be provided with optical lens 2 in the framework 1, the side of optical lens 2 is provided with light source 3, and the below of lens 2 is provided with circuit base plate 6; Be positioned on the circuit base plate 6 lens 2 under be provided with opto-electronic conversion chip 5; The top of lens 2 is provided with transparent panel 4, and said structure and interconnected relationship are identical with prior art, and this does not give unnecessary details; Characteristic of the present invention is to be pasted with black adhesive tape 9 and the black adhesive tape 10 that is in the light that is in the light respectively in the corresponding optical lens of contact-type image sensor transparent panel lower surface 2 both sides, and black the be in the light length of adhesive tape 10 of adhesive tape 9 and black that is in the light is longer than the sweep length of contact-type image sensor.When contact-type image sensor space not exclusively during the state work of sealing around; The light beam A that light source 3 sends sees through transparent panel 4 and shines on the original copy; A part of folded light beam B on the scan manuscript sees through transparent panel and gets into optical lens 2; The reverberation that comes out from optical lens 2 other ends shines on the opto-electronic conversion chip 5, and opto-electronic conversion chip 5 converts the light signals that receive to the signal of telecommunication, and extraneous natural light beam C and D can not get into optical lens 2 because of the black that receives the stickup of transparent panel 4 lower surfaces adhesive tape 9 and black stopping of adhesive tape 10 of being in the light of being in the light; Can not produce and disturb, influence the scanning result of contact-type image sensor the folded light beam B of original copy.
Embodiment 3: as shown in Figure 7, a kind of contact-type image sensor comprises passive framework 1, is provided with optical lens 2 in the framework 1; The side of optical lens 2 is provided with light source 3; The below of lens 2 is provided with circuit base plate 6, be positioned on the circuit base plate 6 lens 2 under be provided with opto-electronic conversion chip 5, the top of lens 2 is provided with transparent panel 4; Said structure and mutual downlink connection relation are identical with prior art; This does not give unnecessary details, and it is characterized in that transparent panel upper surface in corresponding optical lens 2 one sides is printed with the black printing ink 11 that is in the light, and the be in the light length of printing ink 11 of black is longer than the sweep length of contact-type image sensor.When two contact-type image sensor relative scanning; The light beam A that top contact type image light source 3 sends sees through transparent panel 4 and shines on the original copy; A part of folded light beam B on the scan manuscript sees through transparent panel and gets into optical lens 2; The reverberation that comes out from optical lens 2 other ends shines on the opto-electronic conversion chip 5; Opto-electronic conversion chip 5 converts the light signal that receives to the signal of telecommunication; And the light beam E that following contact-type image sensor light source sends receives the black of top contact-type image sensor transparent panel upper surface printing stopping of printing ink 11 of being in the light and can not get into optical lens 2, can not produce the folded light beam B of original copy and disturb, the scanning result of contact-type image sensor above the influence.
Claims (8)
1. contact-type image sensor; Comprise passive framework, be provided with optical lens in the framework, the side of optical lens is provided with light source; The below of lens is provided with circuit base plate; Circuit base plate is provided with the opto-electronic conversion chip, and the top of lens is provided with transparent panel, it is characterized in that transparent panel is provided with extraneous light beam occlusion part article.
2. a kind of contact-type image sensor according to claim 1, the color that it is characterized in that extraneous light beam occlusion part article is a black.
3. a kind of contact-type image sensor according to claim 1 is characterized in that the sweep length of the length of extraneous light beam occlusion part article greater than contact-type image sensor.
4. a kind of contact-type image sensor according to claim 1 is characterized in that transparent panel is provided with the extraneous light beam occlusion part of multistage article.
5. a kind of contact-type image sensor according to claim 1 is characterized in that extraneous light beam occlusion part article are arranged on the upper surface of transparent panel.
6. a kind of contact-type image sensor according to claim 1 is characterized in that extraneous light beam occlusion part article are arranged on the lower surface of transparent panel.
7. a kind of contact-type image sensor according to claim 1 is characterized in that the extraneous light beam occlusion part article that are provided with are printing ink layer on transparent panel.
8. a kind of contact-type image sensor according to claim 1 is characterized in that the extraneous light beam occlusion part article that are provided with are Continuous pressing device for stereo-pattern on transparent panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103206365A CN102801891A (en) | 2012-09-03 | 2012-09-03 | Contact-type image sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103206365A CN102801891A (en) | 2012-09-03 | 2012-09-03 | Contact-type image sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102801891A true CN102801891A (en) | 2012-11-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103206365A Pending CN102801891A (en) | 2012-09-03 | 2012-09-03 | Contact-type image sensor |
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| Country | Link |
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| CN (1) | CN102801891A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10173862A (en) * | 1996-12-11 | 1998-06-26 | Citizen Electron Co Ltd | Close contact image sensor |
| CN201307893Y (en) * | 2008-12-08 | 2009-09-09 | 威海华菱光电有限公司 | Contact type image sensor with protector |
| CN101539707A (en) * | 2008-03-21 | 2009-09-23 | 富士能株式会社 | Imaging filter |
| CN201571120U (en) * | 2009-11-12 | 2010-09-01 | 威海华菱光电有限公司 | Contact-type image sensor |
-
2012
- 2012-09-03 CN CN2012103206365A patent/CN102801891A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10173862A (en) * | 1996-12-11 | 1998-06-26 | Citizen Electron Co Ltd | Close contact image sensor |
| CN101539707A (en) * | 2008-03-21 | 2009-09-23 | 富士能株式会社 | Imaging filter |
| CN201307893Y (en) * | 2008-12-08 | 2009-09-09 | 威海华菱光电有限公司 | Contact type image sensor with protector |
| CN201571120U (en) * | 2009-11-12 | 2010-09-01 | 威海华菱光电有限公司 | Contact-type image sensor |
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Application publication date: 20121128 |