CN201726456U - Image reading device - Google Patents
Image reading device Download PDFInfo
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- CN201726456U CN201726456U CN2010202803806U CN201020280380U CN201726456U CN 201726456 U CN201726456 U CN 201726456U CN 2010202803806 U CN2010202803806 U CN 2010202803806U CN 201020280380 U CN201020280380 U CN 201020280380U CN 201726456 U CN201726456 U CN 201726456U
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- scanning
- reference pattern
- optical lens
- transparent panel
- light
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Abstract
The utility model discloses an image reading device with a scanning datum reference pattern, which comprises a frame body with the supporting function; an optical lens is arranged in the frame body; a light source is arranged on the side of the optical lens; a circuit baseplate is arranged below the lens; a photoelectric conversion chip is arranged on the circuit baseplate; and a transparent plate is arranged above the optical lens. The device is characterized in that the scanning datum reference pattern with the reflectivity different from that of a transparent plate is arranged on the transparent plate; one part of light emitted by the light source passes through the transparent plate to be irradiated on a scanned object, and another part of light is directly irradiated to the scanning datum reference pattern; light reflected from the scanned object and the scanning datum reference pattern enters into the optical lens; reflected light from the other end of the optical lens is irradiated on the photoelectric conversion chip; and the photoelectric conversion chip converts a received optical signal into an electrical signal, so as to correct the output variation of the image reading device caused by temperature variation or natural attenuation of the light source, and guarantee the scanning accuracy of the image information of the scanned object.
Description
Technical field
The utility model relates to a kind of imageing sensor, specifically a kind of image read-out that is provided with scanning reference pattern on transparent panel.
Background technology
We know, existing linear image reading device as shown in Figure 1, it is provided with passive framework 1, be provided with optical lens 2 in the framework 1, one side of optical lens 2 is provided with light source 3, 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, the function of opto-electronic conversion chip 5 is to convert light signal to the signal of telecommunication, during work, the light that light source 3 sends, see through transparent panel 4 and shine (original copy) on the scanned object, image on the scanned object (original copy), literal etc. produce reverberation, these reverberation pass transparent panel 4 again, partial reflection light enters optical lens 2, 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, outwards export as image (literal) information, original copy constantly moves, and the image of being put down in writing on it (literal) information will be read continuously, finishes the image information scanning process of scanned object.
Adopt existing image read-out to scan, when temperature changes with the light source decay, the output of imageing sensor uprises or step-down, image read-out is also discerned according to the setting of normal condition scanning, just can not read the information of scanning object exactly, cause erroneous judgement, mistake to discern the generation of situation.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, is provided at the linear image reading device that can carry out accurate scanning, band scanning reference pattern when temperature changes and light source is decayed.
The utility model can reach by following measure.
A kind of image read-out, 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, substrate is provided with the opto-electronic conversion chip, the top of lens is provided with transparent panel, it is characterized in that on transparent panel, being provided with the scanning reference pattern different with the transparent panel reflectivity, the light part that light source sends sees through transparent panel and shines on the scanned object, another part shines directly on the scanning reference pattern, the light that scanned object and scanning reference pattern reflect enters 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, finishes the image information scanning process of scanned object and scanning reference pattern.
The shape of the scanning reference pattern in the utility model on the transparent panel generally adopts rectangle, also can adopt circle, triangle, semicircle etc., the size of shape can be set as required, and the scanning reference pattern of difformity and size can be set according to the concrete needs of the volume of the effective scanning length of image read-out and image read-out and correction.
The color of the scanning reference pattern in the utility model on the transparent panel can be white, also can be grey, if reflectivity certain just can, generally white usefulness is many.
Scanning reference pattern in the utility model on the transparent panel can be printing or be attached to a kind of reflection unit on the light-passing board (as have certain reflectivity white or grey adhesive tape or printing ink and so on), also can be to be produced on the zone (this regional reflex rate is very high, and transmitance is very little) that has certain roughness on the surface of light-passing board by chemical etching or machining.
Scanning reference pattern in the utility model on the transparent panel generally be positioned at optical lens directly over, can be arranged on initiating terminal, middle part or the afterbody of scanning according to the scanning needs.
Scanning reference pattern in the utility model on the transparent panel can be provided with as required one, two or more, make it be in the diverse location of scanning.
The beneficial effects of the utility model are to scan with image read-out, when temperature changes or light source decay when causing that reading device output changes, the output comparison of scanning reference pattern under output that can be by scanning the reference pattern this moment and the normal condition, output to scanned object is proofreaied and correct, reach the purpose of accurate scanning, be with a wide range of applications.
Description of drawings.
Fig. 1 is the section of structure of original image reading device.
Fig. 2 is a section of structure of the present utility model.
Fig. 3 is the schematic diagram of the utility model embodiment 1.
Fig. 4 is the schematic diagram of the utility model embodiment 2.
Fig. 5 is the schematic diagram of the utility model embodiment 3.
Fig. 6 is the schematic diagram of the utility model embodiment 4.
Fig. 7 is the schematic diagram of signal correction among the utility model embodiment.
Embodiment.
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 2 is a section of structure of the present utility model.It is provided with passive framework 1, be provided with optical lens 2 in the framework 1, one side of optical lens 2 is provided with light source 3, the top of lens 2 is provided with transparent panel 4, transparent panel 4 is provided with the scanning reference pattern 7 different with the transparent panel reflectivity, 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.During work, a part of light that light source 3 sends, see through transparent panel 4 and shine (original copy) on the scanned object, another part light shines directly on the scanning reference pattern 7, scanned object (original copy) and scanning reference pattern 7 produce reverberation, these reverberation enter optical lens 2, 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, outwards export as image (literal) information, original copy constantly moves, image (literal) information of being put down in writing on original copy and the scanning reference pattern 7 will be read continuously, finishes the image information scanning process of scanned object and scanning reference pattern 7.Under the normal condition working condition, the signal output of scanning reference pattern 7 can go on record, when temperature changes or light source when decay, the signal output of scanning reference pattern 7 also can change thereupon, output by the time scanning reference pattern 7 of working with normal condition relatively, the scanned object signal output that changes is proofreaied and correct, obtain scanning information accurately.
The schematic diagram of Fig. 3 the utility model embodiment 1.Scanning initiating terminal in the present embodiment on transparent panel is provided with rectangular scanning reference pattern 7, scanning reference pattern 7 be positioned at lens directly over, when image-scanning device carries out work, a part of light that light source sends, seeing through transparent panel 4 shines on the scanned object, another part light shines directly on the scanning reference pattern 7, the scanning reference pattern 7 of scanned object and scanning initiating terminal produces reverberation, these reverberation enter optical lens, the reverberation that comes out from the optical lens other end shines on the sensitization form of opto-electronic conversion chip, the opto-electronic conversion chip converts the light signal that receives to the signal of telecommunication, finishes the image information scanning process of scanned object and scanning reference pattern 7.When temperature changes or light source when decay, the output of the output that is scanned reference pattern 7 this moment scanning reference pattern 7 during with normal condition scanning relatively, and then the output of correction scanned object obtains scan image accurately.
The schematic diagram of Fig. 4 the utility model embodiment 2.In the present embodiment on transparent panel the scanning middle part establish the rounded scanning reference pattern 7 different with light reflectivity transparent panel, scanning reference pattern 7 be positioned at lens directly over.When image-scanning device carries out work, a part of light that light source sends, seeing through transparent panel 4 shines on the scanned object, another part light shines directly on the scanning reference pattern 7, the scanning reference pattern 7 of scanned object and scanning middle part produces reverberation, these reverberation enter optical lens, the reverberation that comes out from the optical lens other end shines on the sensitization form of opto-electronic conversion chip, the opto-electronic conversion chip converts the light signal that receives to the signal of telecommunication, finishes the image information scanning process of scanned object and scanning reference pattern 7.When temperature changes or light source when decay, the output of the output that is scanned reference pattern 7 this moment scanning reference pattern 7 during with normal condition scanning relatively, and then the output of correction scanned object obtains scan image accurately.
The schematic diagram of Fig. 5 the utility model embodiment 3.In the present embodiment on transparent panel (scanning tail position) establish leg-of-mutton scanning reference pattern 7, scanning reference pattern 7 be positioned at lens directly over.When image-scanning device carries out work, a part of light that light source sends, seeing through transparent panel 4 shines on the scanned object, another part light shines directly on the scanning reference pattern 7, the scanning reference pattern 7 of scanned object and scanning afterbody produces reverberation, these reverberation enter optical lens, the reverberation that comes out from the optical lens other end shines on the sensitization form of opto-electronic conversion chip, the opto-electronic conversion chip converts the light signal that receives to the signal of telecommunication, finishes the image information scanning process of scanned object and scanning reference pattern 7.When temperature changes or light source when decay, the output of the output that is scanned reference pattern 7 this moment scanning reference pattern 7 during with normal condition scanning relatively, and then the output of correction scanned object obtains scan image accurately.
The schematic diagram of Fig. 6 the utility model embodiment 4.In the present embodiment on transparent panel (in the effective scanning amplitude) a plurality of scanning reference patterns 7 are set, scanning reference pattern 7 be positioned at lens directly over.When image-scanning device carries out work, a part of light that light source sends, seeing through transparent panel 4 shines on the scanned object, another part light shines directly on the scanning reference pattern 7, scanned object and a plurality of scanning reference pattern 7 produce reverberation, these reverberation enter optical lens, the reverberation that comes out from the optical lens other end shines on the sensitization form of opto-electronic conversion chip, the opto-electronic conversion chip converts the light signal that receives to the signal of telecommunication, finishes the image information scanning process of scanned object and scanning reference pattern 7.When temperature changes or light source when decay, the output of the output that is scanned reference pattern 7 this moment a plurality of scanning reference patterns 7 during with normal condition scanning relatively, and then the output of correction scanned object obtains scan image accurately.
Fig. 7 is the schematic diagram of signal correction among the utility model embodiment.In the present embodiment during normal scan scanned object be output as Vp1, scanning reference pattern T is output as Vp2, the output Vp2 that scans reference pattern T this moment is recorded Xia Lai ﹔ and changes or light source when decaying when temperature, scanned object is output as Vp3, and scanning reference pattern T is output as Vp4.The output Vp2 of scanning reference pattern T changes divided by temperature or the output Vp4 of scanning reference pattern T during the light source decay during with normal scan, obtain correction coefficient K, multiply by that temperature changes or the output Vp3 of scanned object during the light source decay with correction coefficient K, obtain scanned accurately volume image output.
Claims (5)
1. image read-out, 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, substrate is provided with the opto-electronic conversion chip, and the top of lens is provided with transparent panel, it is characterized in that being provided with on transparent panel the scanning reference pattern different with the transparent panel reflectivity.
2. a kind of image read-out according to claim 1 is characterized in that the color of scanning reference pattern on the transparent panel is white.
3. a kind of image read-out according to claim 1, it is characterized in that scanning the reference pattern is a kind of smooth reflection graphic patterns that is printed on the transparent panel.
4. a kind of image read-out according to claim 1 is characterized in that scanning the reference pattern and is by chemical etching or machining and is produced on the pattern that has certain roughness on the surface of transparent panel.
5. a kind of image read-out according to claim 1 is characterized in that scanning the reference pattern setting directly over lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202803806U CN201726456U (en) | 2010-08-04 | 2010-08-04 | Image reading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202803806U CN201726456U (en) | 2010-08-04 | 2010-08-04 | Image reading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201726456U true CN201726456U (en) | 2011-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202803806U Expired - Fee Related CN201726456U (en) | 2010-08-04 | 2010-08-04 | Image reading device |
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| CN (1) | CN201726456U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102752474A (en) * | 2012-07-11 | 2012-10-24 | 威海华菱光电股份有限公司 | Contact type image sensor |
| CN102801889A (en) * | 2012-07-27 | 2012-11-28 | 威海华菱光电股份有限公司 | Contact type image sensor |
| CN105957236A (en) * | 2016-06-08 | 2016-09-21 | 聚龙股份有限公司 | Image detection device |
-
2010
- 2010-08-04 CN CN2010202803806U patent/CN201726456U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102752474A (en) * | 2012-07-11 | 2012-10-24 | 威海华菱光电股份有限公司 | Contact type image sensor |
| CN102801889A (en) * | 2012-07-27 | 2012-11-28 | 威海华菱光电股份有限公司 | Contact type image sensor |
| CN102801889B (en) * | 2012-07-27 | 2015-02-04 | 威海华菱光电股份有限公司 | Contact type image sensor |
| CN105957236A (en) * | 2016-06-08 | 2016-09-21 | 聚龙股份有限公司 | Image detection device |
| CN105957236B (en) * | 2016-06-08 | 2018-10-26 | 聚龙股份有限公司 | Image detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: WEIHAI HUALING OPTO-ELECTRONICS CO., LTD. Free format text: FORMER NAME: WEIHAI HUALING OPTOELECTRONIC CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 264209 Weihai high tech Industrial Development Zone, Shandong Torch Road, No. 159 Patentee after: Weihai Hualing Opto-electronics Co.,Ltd. Address before: 264200 Torch Road, hi tech Industrial Development Zone, Shandong, Weihai 159 Patentee before: Weihai Hualing Optoelectronic Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110126 Termination date: 20180804 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |