CN102801889B - Contact type image sensor - Google Patents
Contact type image sensor Download PDFInfo
- Publication number
- CN102801889B CN102801889B CN201210279317.4A CN201210279317A CN102801889B CN 102801889 B CN102801889 B CN 102801889B CN 201210279317 A CN201210279317 A CN 201210279317A CN 102801889 B CN102801889 B CN 102801889B
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- CN
- China
- Prior art keywords
- type image
- image sensor
- contact
- temperature sensor
- photoelectric conversion
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
- H04N1/00007—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for relating to particular apparatus or devices
- H04N1/00013—Reading apparatus
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
- H04N1/00026—Methods therefor
- H04N1/00034—Measuring, i.e. determining a quantity by comparison with a standard
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
- H04N1/00071—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for characterised by the action taken
- H04N1/00082—Adjusting or controlling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
- H04N1/03—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array
Abstract
The invention discloses a contact type image sensor with a temperature detection function. The contact type image sensor comprises a frame with a supporting function; the frame is internally provided with an optical lens and a light source is arranged on the side face of the optical lens; a transparent plate is arranged above the lens and a line substrate is arranged below the lens; the line substrate is provided with a photovoltaic conversion chip and a signal output part; the contact type image sensor is characterized in that a temperature sensor is arranged on the contact type image sensor and a signal collected by the temperature sensor is connected to a peripheral circuit through the signal output part; when the contact type image sensor works, the temperature sensor can detect the temperatures of the contact type image sensor and the peripheral environment; a suitable augmenting factor can be adopted and the accuracy of image processing is guaranteed; and meanwhile, a caution is sent when the temperatures of the contact type image sensor and the peripheral environment exceed rated temperatures.
Description
Technical field
The present invention relates to sensor technical field, is a kind of at the contact-type image sensor with temperature sensor specifically.
Background technology
We know, the operation principle of existing contact-type image sensor as shown in Figure 1, it is provided with passive framework 1, optical lens 2 is provided with in framework 1, the 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, wiring board 6 is positioned at immediately below lens 2 and is provided with photoelectric conversion chip 5, photoelectric conversion chip 5 top surface is provided with photosensitive form, inside is provided with circuit, and the function of photoelectric conversion chip 5 converts light signal to the signal of telecommunication, and the back side of wiring board 6 is provided with signal output component 7.During image read-out work, the light that light source 3 sends, be irradiated on original copy through transparent panel 4, image on original copy, words etc. produce reverberation, these reverberation are again through transparent panel 4, part reverberation enters optical lens 2, be irradiated to the photosensitive form of photoelectric conversion chip 5 from optical lens 2 other end reverberation out, photoelectric conversion chip 5 is converted to the signal of telecommunication the light signal received and is exported by signal output component 7, original copy is movement constantly, image described on it, Word message will be read continuously, complete the image information scanning process of original copy.
Along with the fast development of integrated circuit technique and contact-type image sensor are in the application of the special dimensions such as finance, the volume of electronic device and contact-type image sensor is more and more less, the heat density of integrated device and contact-type image sensor inside is increasing, and the reliability of photoelectric conversion chip work is very responsive to temperature; And during contact-type image sensor work, the evolution of heat while light, cause the temperature of luminous element itself slowly to raise, along with the rising of temperature, the brightness of luminous element can change, and the heat that luminous element sends can make the transmission conductor of light expand, affect the conductive performance of transmission conductor to light, existing contact-type image sensor, when above-mentioned change occurs Yin Wendu, can not make corresponding correction in time, cause the result serious distortion of scanning, the accuracy of impact scanning; Environment generation acute variation around, temperature too high or too low time, can there is exception in the chip operation on contact-type image sensor, affect quality of scanning, and existing contact-type image sensor cannot provide warning.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of contact-type image sensor with temperature detecting function.
The present invention can be reached by following measure:
A kind of contact-type image sensor, comprise passive framework, optical lens is provided with in framework, the side of optical lens is provided with light source, the below of lens is provided with circuit base plate, the top of lens is provided with transparent panel, circuit base plate is positioned at immediately below lens and is provided with photoelectric conversion chip, the back side of circuit base plate is provided with signal output component, it is characterized in that being provided with temperature sensor on contact-type image sensor, the signal that temperature sensor collects is connected on peripheral circuit by signal output component, when contact-type image sensor works, the light transmission transparent panel that light source sends is irradiated on original copy, a part of reverberation on scan manuscript enters optical lens through transparent panel, be irradiated to photoelectric conversion chip from optical lens other end reverberation out, photoelectric conversion chip converts the signal of telecommunication to the light signal received, exported by signal output component, now temperature sensor can connect the temperature measuring residing region fast, temperature parameter is exported by signal output component, image processing system can adopt suitable augmenting factor according to the temperature parameter obtained, correction is carried out to the signal of telecommunication of photoelectric conversion chip conversion, obtain image scanning result more accurately, when the temperature parameter that temperature sensor exports occurs abnormal, system can detect and make a response fast, interrupts the work of contact-type image sensor, or sends wait instruction, after equitemperature recovery is normal, works on.
Temperature sensor in the present invention can be arranged on the light source place of contact-type image sensor, with the temperature of detection light source, carries out correction to the change of light source.
Temperature sensor in the present invention can be arranged on the front of the circuit base plate of contact-type image sensor, to detect the temperature of photoelectric conversion chip, carries out correction to the change of photoelectric conversion chip.
Temperature sensor in the present invention can be arranged on the back side of the circuit base plate of contact-type image sensor, to detect the temperature of surrounding environment, carry out correction to the variations in temperature of surrounding environment, and user can unrestricted choice sensor model number as required, it is convenient to change.
Temperature sensor in the present invention can be arranged on the transparent panel of contact-type image sensor, and prevent original copy by transparent panel surface, friction generates heat repeatedly, and temperature is too high.
Temperature sensor in the present invention can be that its output signal a kind of varies with temperature and the transducer that changes, as thermistor, integrated temperature sensing chip etc., different temperature exports different temperature parameters, and image processing system can adopt suitable augmenting factor according to different temperature parameters.
Temperature sensor in the present invention can be the switching device that a kind of variations in temperature comes control circuit conducting and disconnection, as thermal protector etc., and automatic cut-off power when temperature is too high.
Temperature sensor in the present invention can be connected with the warning device of contact-type image sensor, sends warning in time during temperature anomaly.
The invention has the beneficial effects as follows, when contact-type image sensor works, temperature sensor can detect the temperature of contact-type image sensor and surrounding environment thereof, adopts suitable augmenting factor, ensures the accuracy of image procossing; Simultaneously provide warning when contact-type image sensor and the over proof temperature of surrounding environment thereof, interrupt the work of contact-type image sensor, or send wait instruction, equitemperature recover normal after, work on.
Accompanying drawing explanation
Fig. 1 is the generalized section of existing contact-type image sensor.
Fig. 2 is the schematic diagram of the embodiment of the present invention 1.
Fig. 3 is the schematic diagram of the embodiment of the present invention 2.
Fig. 4 is the schematic diagram of the embodiment of the present invention 3.
Fig. 5 is the schematic diagram of the embodiment of the present invention 4.
Fig. 6 is the schematic diagram of the embodiment of the present invention 5.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Embodiment 1: as shown in Figure 2, contact-type image sensor comprises passive framework 1, optical lens 2 is provided with in framework 1, the side of optical lens 2 is provided with light source 3, the framework 1 at the adjacent regions place of light source 3 is provided with temperature sensor 8, the top of lens 2 is provided with transparent panel 4, the below of lens 2 is provided with wiring board 6, the back side of wiring board 6 is provided with signal output component 7, the front of wiring board 6 is positioned at immediately below lens 2 and is provided with photoelectric conversion chip 5, photoelectric conversion chip 5 top surface is provided with photosensitive form, inside is provided with circuit, the function of photoelectric conversion chip 5 converts light signal to the signal of telecommunication.When contact-type image sensor works, the light transmission transparent panel 4 that light source 3 sends is irradiated on original copy, a part of reverberation on scan manuscript enters optical lens 2 through transparent panel 4, be irradiated to photoelectric conversion chip 5 from optical lens other end reverberation out, photoelectric conversion chip converts the signal of telecommunication to the light signal received, and is exported by signal output component 7.Along with the carrying out of scanning, the temperature of light source 3 raises gradually, light source 3 at different temperature luminosity is different, now temperature sensor 8 energy fast detecting goes out the temperature of light source 3, temperature parameter is exported by signal output component 7, image processing system can adopt suitable augmenting factor according to the temperature parameter obtained, correction is carried out to the signal of telecommunication of photoelectric conversion chip conversion, obtain image scanning result accurately, the structure of above-mentioned each part and the interconnected relationship between them same as the prior art, this does not repeat.
Embodiment 2: as shown in Figure 3, contact-type image sensor comprises passive framework 1, optical lens 2 is provided with in framework 1, the 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, the back side of wiring board 6 is provided with signal output component 7, the front of wiring board 6 is positioned at immediately below lens 2 and is provided with photoelectric conversion chip 5, wiring board 6 around photoelectric conversion chip 5 is provided with temperature sensor 8, photoelectric conversion chip 5 top surface is provided with photosensitive form, inside is provided with circuit, the function of photoelectric conversion chip 5 converts light signal to the signal of telecommunication.When contact-type image sensor works, the light transmission transparent panel 4 that light source 3 sends is irradiated on original copy, a part of reverberation on scan manuscript enters optical lens 2 through transparent panel 4, be irradiated to photoelectric conversion chip 5 from optical lens other end reverberation out, photoelectric conversion chip converts the signal of telecommunication to the light signal received, and is exported by signal output component 7.Along with the carrying out of scanning, the heat that on wiring board, each devices function produces causes the temperature around photoelectric conversion chip 5 to raise gradually, the change of photoelectric conversion chip 5 pairs of temperature is very responsive, the magnitude of voltage outputed signal under different temperatures is different, now temperature sensor 8 energy fast detecting goes out the temperature of photoelectric conversion chip 5, temperature parameter is exported by signal output component 7, image processing system can adopt suitable augmenting factor according to the temperature parameter obtained, correction is carried out to the signal of telecommunication of photoelectric conversion chip conversion, obtain image scanning result accurately, the structure of above-mentioned each part and the interconnected relationship between them same as the prior art, this does not repeat.
Embodiment 3: as shown in Figure 4, contact-type image sensor comprises passive framework 1, optical lens 2 is provided with in framework 1, the 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 does not affect original copy and is provided with temperature sensor 8 by position, the below of lens 2 is provided with wiring board 6, the back side of wiring board 6 is provided with signal output component 7, the front of wiring board 6 is positioned at immediately below lens 2 and is provided with photoelectric conversion chip 5, photoelectric conversion chip 5 top surface is provided with photosensitive form, inside is provided with circuit, the function of photoelectric conversion chip 5 converts light signal to the signal of telecommunication.When contact-type image sensor works, the light transmission transparent panel 4 that light source 3 sends is irradiated on original copy, a part of reverberation on scan manuscript enters optical lens 2 through transparent panel 4, be irradiated to photoelectric conversion chip 5 from optical lens other end reverberation out, photoelectric conversion chip converts the signal of telecommunication to the light signal received, and is exported by signal output component 7.Along with the carrying out of scanning, original copy is quickly through the surface of transparent panel 4, rub with transparent panel 4, produce amount of heat, residing for contact-type image sensor, space is more closed, the amount of heat produced does not distribute not go out, temperature raises, affect the normal work of contact-type image sensor, now temperature sensor 8 energy fast detecting goes out the temperature of transparent panel 4, temperature parameter is exported by signal output component 7, system can determine according to the temperature parameter obtained the work whether stopping contact-type image sensor, or adopt other cooling measure to ensure safety, the structure of above-mentioned each part and the interconnected relationship between them same as the prior art, this does not repeat.
Embodiment 4: as shown in Figure 5, contact-type image sensor comprises passive framework 1, optical lens 2 is provided with in framework 1, the 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, the back side of wiring board 6 is provided with signal output component 7, temperature sensor 8 and red alarm indicator light 9, on wiring board 6, front is positioned at immediately below lens 2 and is provided with photoelectric conversion chip 5, photoelectric conversion chip 5 top surface is provided with photosensitive form, inside is provided with circuit, the function of photoelectric conversion chip 5 converts light signal to the signal of telecommunication.When contact-type image sensor works, the light transmission transparent panel 4 that light source 3 sends is irradiated on original copy, a part of reverberation on scan manuscript enters optical lens 2 through transparent panel 4, be irradiated to photoelectric conversion chip 5 from optical lens other end reverberation out, photoelectric conversion chip converts the signal of telecommunication to the light signal received, and is exported by signal output component 7.When ambient temperature changes, the work of contact-type image sensor can be made to occur abnormal, now the temperature sensor 8 at wiring board 6 back side can detect the temperature of surrounding environment, warning is provided by warning device 9, and temperature sensor 8 is arranged on the back side of wiring board 6, user can unrestricted choice sensor model number as required, and it is convenient to change, the structure of above-mentioned each part and the interconnected relationship between them same as the prior art, this does not repeat.
Embodiment 5: as shown in Figure 6, contact-type image sensor comprises passive framework 1, optical lens 2 is provided with in framework 1, the 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, the back side of wiring board 6 is provided with temperature sensor---and heat protects device 8 and signal output component 7, the front of wiring board 6 is positioned at immediately below lens 2 and is provided with photoelectric conversion chip 5, photoelectric conversion chip 5 top surface is provided with photosensitive form, inside is provided with circuit, the function of photoelectric conversion chip 5 converts light signal to the signal of telecommunication.When contact-type image sensor works, the light transmission transparent panel 4 that light source 3 sends is irradiated on original copy, a part of reverberation on scan manuscript enters optical lens 2 through transparent panel 4, be irradiated to photoelectric conversion chip 5 from optical lens other end reverberation out, photoelectric conversion chip converts the signal of telecommunication to the light signal received, and is exported by signal output component 7.Along with the carrying out of scanning, the heat that on wiring board, each devices function produces causes the temperature of wiring board 6 to raise gradually, now the power supply of the temperature sensor 8 at wiring board 6 back side energy fast shut-off contact-type image sensor when temperature reaches its rated value, prevents the scanning result distortion of contact-type image sensor.
Claims (4)
1. a contact-type image sensor, comprise passive framework, optical lens is provided with in framework, the side of optical lens is provided with light source, the top of lens is provided with transparent panel, the below of lens is provided with circuit base plate, circuit base plate is provided with photoelectric conversion chip and signal output component, it is characterized in that at least at described contact-type image sensor with set temperature transducer on the position of in upper/lower positions, wherein said position comprises in the framework at described light source place, on circuit base plate around photoelectric conversion chip and on transparent panel, and the signal collected by described temperature sensor is connected on peripheral circuit by signal output component, suitable augmenting factor is adopted to carry out correction to the signal of telecommunication that photoelectric conversion chip is changed according to the signal that temperature sensor collects, when the abnormal signal that temperature sensor collects, interrupt the work of contact-type image sensor or send wait instruction, equitemperature recovers to work on normally.
2. a kind of contact-type image sensor according to claim 1, it is characterized in that when on the circuit base plate in the framework that described temperature sensor is arranged on the light source place of described contact-type image sensor and/or around photoelectric conversion chip, the transducer that described temperature sensor adopts its output signal a kind of to vary with temperature and changes.
3. a kind of contact-type image sensor according to claim 1, it is characterized in that, when described temperature sensor is arranged on the back side of the circuit base plate of described contact-type image sensor and/or transparent panel, described temperature sensor adopts a kind of variations in temperature to carry out the switching device of control circuit conducting and disconnection.
4. a kind of contact-type image sensor according to claim 1, it is characterized in that described contact-type image sensor also comprises warning device, described warning device is connected with described temperature sensor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210279317.4A CN102801889B (en) | 2012-07-27 | 2012-07-27 | Contact type image sensor |
| PCT/CN2012/085276 WO2014015595A1 (en) | 2012-07-27 | 2012-11-26 | Contact type image sensor, image and text processing system and processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210279317.4A CN102801889B (en) | 2012-07-27 | 2012-07-27 | Contact type image sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102801889A CN102801889A (en) | 2012-11-28 |
| CN102801889B true CN102801889B (en) | 2015-02-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210279317.4A Active CN102801889B (en) | 2012-07-27 | 2012-07-27 | Contact type image sensor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102801889B (en) |
| WO (1) | WO2014015595A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210294190A1 (en) * | 2018-08-10 | 2021-09-23 | Sony Corporation | Lighting device and projection display device |
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| CN1107628A (en) * | 1993-08-24 | 1995-08-30 | 三田工业株式会社 | Facsimile having environmental conditions ensor |
| CN1366419A (en) * | 2001-01-18 | 2002-08-28 | 三菱电机株式会社 | Image sensor of image input device |
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| US7804080B2 (en) * | 2004-06-25 | 2010-09-28 | Samsung Electronics Co., Ltd. | Moisture removal apparatus and method of image read out apparatus |
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| CN201237534Y (en) * | 2008-06-27 | 2009-05-13 | 赵永生 | Temperature sensing element |
| CN201479230U (en) * | 2009-07-24 | 2010-05-19 | 威海华菱光电有限公司 | Contact-type image sensor |
| CN101990050A (en) * | 2009-07-31 | 2011-03-23 | 威海华菱光电有限公司 | Special glass plate for contact-type image sensor and preparation method thereof |
| CN201556274U (en) * | 2009-09-11 | 2010-08-18 | 常州齐泰电气制造有限公司 | Distribution cabinet temperature alarm |
| CN201830340U (en) * | 2010-07-16 | 2011-05-11 | 威海华菱光电有限公司 | Contact image sensor |
| CN101990052B (en) * | 2010-12-03 | 2015-12-02 | 威海华菱光电股份有限公司 | A kind of contact-type image sensor |
| CN201869276U (en) * | 2010-12-03 | 2011-06-15 | 威海华菱光电有限公司 | Contact image sensor |
| CN202334693U (en) * | 2011-11-29 | 2012-07-11 | 威海华菱光电股份有限公司 | Contact-type image sensor |
-
2012
- 2012-07-27 CN CN201210279317.4A patent/CN102801889B/en active Active
- 2012-11-26 WO PCT/CN2012/085276 patent/WO2014015595A1/en active Application Filing
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|---|---|---|---|---|
| CN1107628A (en) * | 1993-08-24 | 1995-08-30 | 三田工业株式会社 | Facsimile having environmental conditions ensor |
| CN1366419A (en) * | 2001-01-18 | 2002-08-28 | 三菱电机株式会社 | Image sensor of image input device |
| CN1397907A (en) * | 2001-07-18 | 2003-02-19 | 佳能株式会社 | Iamge processor |
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| CN202696734U (en) * | 2012-07-27 | 2013-01-23 | 威海华菱光电股份有限公司 | Contact type image sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014015595A1 (en) | 2014-01-30 |
| CN102801889A (en) | 2012-11-28 |
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