CN102801889A - Contact type image sensor - Google Patents
Contact type image sensor Download PDFInfo
- Publication number
- CN102801889A CN102801889A CN2012102793174A CN201210279317A CN102801889A CN 102801889 A CN102801889 A CN 102801889A CN 2012102793174 A CN2012102793174 A CN 2012102793174A CN 201210279317 A CN201210279317 A CN 201210279317A CN 102801889 A CN102801889 A CN 102801889A
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- China
- Prior art keywords
- type image
- image sensor
- contact
- temperature
- temperature sensor
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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
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- 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
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- 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
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- 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
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- 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 ofly to have the contact-type image sensor of temperature sensor specifically.
Background technology
We know that the operation principle of existing contact imageing sensor is as shown in Figure 1, and it is provided with passive framework 1; Be provided with optical lens 2 in the framework 1, a 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; The function of opto-electronic conversion chip 5 is to convert 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 sees through transparent panel 4 and shines on the original copy; Image on the original copy, literal etc. produce reverberation; These reverberation pass transparent panel 4 again, and partial reflection light 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 through signal output component 7 outputs; 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.
Along with the application of the fast development of integrated circuit technique and contact-type image sensor at special dimensions such as finance; The volume of electronic device and contact-type image sensor is more and more littler; The heat density of integrated device and contact-type image sensor inside is increasing, and the reliability of opto-electronic conversion chip operation is very responsive to temperature; And during contact-type image sensor work, evolution of heat when luminous element is luminous causes the temperature of luminous element itself slowly to raise; Along with the rising of temperature, the brightness meeting of luminous element changes, and the heat that luminous element sends can make the transmission conductor of light expand; Influence the conductive performance of transmission conductor to light, the existing contact imageing sensor can not in time be made corresponding revisal when above-mentioned variation takes place Yin Wendu; Cause the serious distortion of result of scanning, the accuracy of influence scanning; Environment generation acute variation around, temperature is too high or cross when low, and the chip operation on the contact-type image sensor can take place to influence quality of scanning unusually, and the existing contact imageing sensor can't provide caution.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of contact-type image sensor with temperature detecting function is provided.
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, and the below of lens is provided with circuit base plate, and the top of lens is provided with transparent panel; Be positioned on the circuit base plate lens under be provided with the opto-electronic conversion chip, the back side of circuit base plate is provided with signal output component, it is characterized in that on contact-type image sensor, being provided with temperature sensor; The signal that temperature sensor collects is connected on the peripheral circuit through signal output component; When contact-type image sensor was worked, the light transmission transparent panel that light source sends shone on the original copy, and a part of reverberation 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; The opto-electronic conversion chip converts the light signal that receives to the signal of telecommunication, and through signal output component output, this moment, temperature sensor can connect the temperature of measuring zone of living in fast; Temperature parameter is exported through signal output component; Image processing system can adopt suitable augmenting factor according to the temperature parameter that obtains, and opto-electronic conversion chip electrical signal converted is carried out revisal, obtains image scanning result more accurately; When the temperature parameter of temperature sensor output takes place when unusual, system can detect and make a response fast, interrupts the work of contact-type image sensor, perhaps send wait for instruction, equitemperature recover normal after, work on.
Temperature sensor among the present invention can be arranged on the light source place of contact-type image sensor, with the temperature of detection light source, revisal is carried out in the variation of light source.
Temperature sensor among the present invention can be arranged on the front of the circuit base plate of contact-type image sensor, to detect the temperature of opto-electronic conversion chip, revisal is carried out in the variation of opto-electronic conversion chip.
Temperature sensor among 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; Variations in temperature to surrounding environment is carried out revisal, and the user can freely select sensor model number, the replacing convenience as required.
Temperature sensor among the present invention can be arranged on the transparent panel of contact-type image sensor, prevents that original copy from passing through the transparent panel surface, and repeated friction produces heat, and temperature is too high.
Temperature sensor among the present invention can be the transducer that a kind of its output signal changes with variations in temperature; Like thermistor; Integrated TEMP chip etc.; Different temperature output different temperature parameter, image processing system can adopt suitable augmenting factor according to the different temperature parameter.
Temperature sensor among the present invention can be a kind ofly to come the switching device of control circuit conducting and disconnection with variations in temperature, like thermal protector etc., cuts off the electricity supply automatically when temperature is too high.
Temperature sensor among the present invention can link to each other with the warning device of contact-type image sensor, in time sends warning during temperature anomaly.
The invention has the beneficial effects as follows that when contact-type image sensor was worked, temperature sensor can detect the temperature of contact-type image sensor and surrounding environment thereof, adopt suitable augmenting factor, guarantee the accuracy of image processing; When contact-type image sensor and the over proof temperature of surrounding environment thereof, provide simultaneously caution, interrupt the work of contact-type image sensor, perhaps send and wait for instruction, after the equitemperature recovery is normal, work on.
Description of drawings
Fig. 1 is the generalized section of existing contact-type image sensor.
Fig. 2 is the sketch map of the embodiment of the invention 1.
Fig. 3 is the sketch map of the embodiment of the invention 2.
Fig. 4 is the sketch map of the embodiment of the invention 3.
Fig. 5 is the sketch map of the embodiment of the invention 4.
Fig. 6 is the sketch map of the embodiment of the invention 5.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
Embodiment 1: as shown in Figure 2, contact-type image sensor comprises passive framework 1, is provided with optical lens 2 in the framework 1; One side of optical lens 2 is provided with light source 3, and the framework 1 at the adjacent regions place of light source 3 is provided with temperature sensor 8, and 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 be positioned at 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.When contact-type image sensor is worked; The light transmission transparent panel 4 that light source 3 sends shines on the original copy; A part of reverberation on the scan manuscript sees through transparent panel 4 and gets into optical lens 2; The reverberation that comes out from the optical lens other end shines on the opto-electronic conversion chip 5, and the opto-electronic conversion chip converts the light signal that receives to the signal of telecommunication, through signal output component 7 outputs.Carrying out along with scanning; The temperature of light source 3 raises gradually, and light source 3 luminosity under different temperature is different, and this moment, temperature sensor 8 ability fast detecting went out the temperature of light source 3; Temperature parameter is exported through signal output component 7; Image processing system can adopt suitable augmenting factor according to the temperature parameter that obtains, and opto-electronic conversion chip electrical signal converted is carried out revisal, obtains image scanning result accurately; The structure of above-mentioned each part and the interconnected relationship between them are identical with prior art, and this does not give unnecessary details.
Embodiment 2: as shown in Figure 3, contact-type image sensor comprises passive framework 1, is provided with optical lens 2 in the framework 1; One side of optical lens 2 is provided with light source 3, and the top of lens 2 is provided with transparent panel 4, and 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 be positioned at lens 2 under be provided with opto-electronic conversion chip 5, the wiring board 6 around the opto-electronic conversion chip 5 is provided with temperature sensor 8, 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.When contact-type image sensor is worked; The light transmission transparent panel 4 that light source 3 sends shines on the original copy; A part of reverberation on the scan manuscript sees through transparent panel 4 and gets into optical lens 2; The reverberation that comes out from the optical lens other end shines on the opto-electronic conversion chip 5, and the opto-electronic conversion chip converts the light signal that receives to the signal of telecommunication, through signal output component 7 outputs.Carrying out along with scanning; The heat that each device work produces on the wiring board causes the temperature around the opto-electronic conversion chip 5 to raise gradually; 5 pairs of variation of temperature of opto-electronic conversion chip are very responsive, and output voltage of signals value is different under the different temperatures, and this moment, temperature sensor 8 ability fast detecting went out the temperature of photoelectricity conversion chip 5; Temperature parameter is exported through signal output component 7; Image processing system can adopt suitable augmenting factor according to the temperature parameter that obtains, and opto-electronic conversion chip electrical signal converted is carried out revisal, obtains image scanning result accurately; The structure of above-mentioned each part and the interconnected relationship between them are identical with prior art, and this does not give unnecessary details.
Embodiment 3: as shown in Figure 4, contact-type image sensor comprises passive framework 1, is provided with optical lens 2 in the framework 1; One side of optical lens 2 is provided with light source 3, and the top of lens 2 is provided with transparent panel 4, on transparent panel 4, does not influence original copy and is provided with temperature sensor 8 through the 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 be positioned at 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.When contact-type image sensor is worked; The light transmission transparent panel 4 that light source 3 sends shines on the original copy; A part of reverberation on the scan manuscript sees through transparent panel 4 and gets into optical lens 2; The reverberation that comes out from the optical lens other end shines on the opto-electronic conversion chip 5, and the opto-electronic conversion chip converts the light signal that receives to the signal of telecommunication, through signal output component 7 outputs.Along with the carrying out of scanning, original copy through the surface of transparent panel 4, rubs with transparent panel 4 fast; Produce a large amount of heats, because contact-type image sensor space of living in is relatively sealed, a large amount of heats of generation distribute does not go out; Temperature raises; Influence the operate as normal of contact-type image sensor, this moment, temperature sensor 8 ability fast detecting went out the temperature of transparent panel 4, and temperature parameter is exported through signal output component 7; Whether system can end the work of contact-type image sensor according to the temperature parameter decision that obtains; Perhaps adopt other cooling measure to guarantee safety, the structure of above-mentioned each part and the interconnected relationship between them are identical with prior art, and this does not give unnecessary details.
Embodiment 4: as shown in Figure 5, contact-type image sensor comprises passive framework 1, is 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, and the below of lens 2 is provided with wiring board 6, and the back side of wiring board 6 is provided with signal output component 7, temperature sensor 8 and red alarm indicator light 9; On the wiring board 6 positive be positioned at lens 2 under be provided with opto-electronic conversion chip 5; Opto-electronic conversion chip 5 top surfaces are provided with the sensitization form, and inside is provided with circuit, and the function of opto-electronic conversion chip 5 is to convert light signal to the signal of telecommunication.When contact-type image sensor is worked; The light transmission transparent panel 4 that light source 3 sends shines on the original copy; A part of reverberation on the scan manuscript sees through transparent panel 4 and gets into optical lens 2; The reverberation that comes out from the optical lens other end shines on the opto-electronic conversion chip 5, and the opto-electronic conversion chip converts the light signal that receives to the signal of telecommunication, through signal output component 7 outputs.When ambient temperature changes, the work of contact-type image sensor is taken place unusually, the temperature sensor 8 at wiring board 6 back sides can detect the temperature of surrounding environment at this moment; Provide caution through warning device 9; And temperature sensor 8 is installed in the back side of wiring board 6, and the user can freely select sensor model number as required, and it is convenient to change; The structure of above-mentioned each part and the interconnected relationship between them are identical with prior art, and this does not give unnecessary details.
Embodiment 5: as shown in Figure 6, contact-type image sensor comprises passive framework 1, is 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, and the below of lens 2 is provided with wiring board 6, and the back side of wiring board 6 is provided with temperature sensor---and heat is protected device 8 and signal output component 7; The front of wiring board 6 be positioned at lens 2 under be provided with opto-electronic conversion chip 5; Opto-electronic conversion chip 5 top surfaces are provided with the sensitization form, and inside is provided with circuit, and the function of opto-electronic conversion chip 5 is to convert light signal to the signal of telecommunication.When contact-type image sensor is worked; The light transmission transparent panel 4 that light source 3 sends shines on the original copy; A part of reverberation on the scan manuscript sees through transparent panel 4 and gets into optical lens 2; The reverberation that comes out from the optical lens other end shines on the opto-electronic conversion chip 5, and the opto-electronic conversion chip converts the light signal that receives to the signal of telecommunication, through signal output component 7 outputs.Carrying out along with scanning; The heat that each device work produces on the wiring board causes the temperature of wiring board 6 to raise gradually; The power supply of the temperature sensor 8 at wiring board 6 back sides ability fast shut-off contact-type image sensor when temperature reaches its rated value prevents the scanning result distortion of contact-type image sensor at this moment.
Claims (8)
1. a 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 top of lens is provided with transparent panel, and the below of lens is provided with circuit base plate, and circuit base plate is provided with opto-electronic conversion chip and signal output component; It is characterized in that contact-type image sensor is provided with temperature sensor, the signal that temperature sensor collects is connected on the peripheral circuit through signal output component.
2. a kind of contact-type image sensor according to claim 1 is characterized in that temperature sensor is arranged on the framework at light source place of contact-type image sensor.
3. a kind of contact-type image sensor according to claim 1 is characterized in that temperature sensor is arranged on the circuit base plate of contact-type image sensor.
4. a kind of contact-type image sensor according to claim 3 is characterized in that temperature sensor is arranged on the back side of circuit base plate.
5. a kind of contact-type image sensor according to claim 1 is characterized in that temperature sensor is arranged on the transparent panel of contact-type image sensor.
6. according to claim 1 and 2 and 3 and 4 and 5 described a kind of contact-type image sensors, it is characterized in that temperature sensor is the transducer that a kind of its output signal changes with variations in temperature.
7. according to claim 1 and 2 and 3 and 4 and 5 described a kind of contact-type image sensors, it is characterized in that temperature sensor is a kind of switching device that comes control circuit conducting and disconnection with variations in temperature.
8. according to claim 1 and 2 and 3 and 4 and 5 described a kind of contact-type image sensors, it is characterized in that temperature sensor links to each other with the warning device of contact-type image 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 true CN102801889A (en) | 2012-11-28 |
| CN102801889B 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112534187A (en) * | 2018-08-10 | 2021-03-19 | 索尼公司 | Illumination device and projection display device |
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| CN201479230U (en) * | 2009-07-24 | 2010-05-19 | 威海华菱光电有限公司 | Contact-type image sensor |
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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 |
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| CN112534187B (en) * | 2018-08-10 | 2023-11-24 | 索尼公司 | Lighting device and projection display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102801889B (en) | 2015-02-04 |
| WO2014015595A1 (en) | 2014-01-30 |
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