CN102865512B - Transmission light source for contact image sensor - Google Patents
Transmission light source for contact image sensor Download PDFInfo
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- CN102865512B CN102865512B CN201210343624.4A CN201210343624A CN102865512B CN 102865512 B CN102865512 B CN 102865512B CN 201210343624 A CN201210343624 A CN 201210343624A CN 102865512 B CN102865512 B CN 102865512B
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- light source
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- light conductor
- adapter sleeve
- luminescence unit
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Abstract
The present invention relates to the reading device of image, a kind of contact-type image sensor in detail, be provided with framework, wiring board is provided with below framework, wiring board is provided with photoelectric conversion chip, above photoelectric conversion chip, lens are installed, lens side or both sides are provided with light source, glass plate is provided with above framework, it is characterized in that at least being provided with the lens of two row different angles or the light source of at least two row different angles, make the centre of luminescence of often row light source not identical with the angle of lens centre, or the centre of luminescence of light source is not identical with the angle often arranging lens centre, the light source of two row different angles can be at least two row light sources, often the centre of luminescence angle of row light source is not identical, also can be a row light source, light source is at least provided with the luminous groove of two kinds of different angles, same row light source is made to send the light of at least two kinds of angles, to identify the color shifting ink denomination numeral on bank note, holograms etc. can show the anti-counterfeiting image information of different colours or pattern with different angles.
Description
Technical field
The present invention relates to image read-out, the combined type transmission light source for contact image sensor that specifically a kind of dependable performance, brightness is high.
Background technology
Along with the development of information technology, the application of image read-out (CIS) is more and more extensive, and also more and more higher to the requirement of image read-out, kind also gets more and more.Light source supporting is with it critical component indispensable in image read-out (CIS), and its performance directly affects the performance of image read-out.Along with the continuous expansion of image read-out application, it is also proposed new requirement to light source, transmitted light source is exactly one of them.We know, the version of the transmitted light source that existing image read-out (CIS) is used is varied.As: circular rod type, array etc.Along with improving constantly image read-out product requirement, new, higher requirement be it is also proposed to the aspect such as performance, price, manufacturability of transmitted light source supporting with it.Existing variously all exist different problems through light source, such as expensive, fixing unreliable, production technology is poor, luminance shortage etc., these problems directly can affect the performance of image read-out, the reduction competitiveness of product in market.
Summary of the invention
The technical problem to be solved in the present invention is, provides one to reduce costs, and reliably can fix again simultaneously, install, and has the transmission light source for contact image sensor that production technology well, dependable performance, brightness are high.
The present invention is reached by following measure.
A kind of transmission light source for contact image sensor, comprise: luminescence unit, framework, light conductor, wiring board, adapter sleeve, glass plate, it is characterized in that described luminescence unit is connected with light conductor by adapter sleeve, light conductor cross sectional shape is drops, light conductor lower flat is printed with reflecting pattern, described reflecting pattern is for using serigraphy white reflection ink pattern, and reflecting pattern is the strip of width about 1mm.
Adapter sleeve of the present invention is rectangle White-opalescent moulding, adapter sleeve side is at least provided with two joint pins, the diameter of joint pin is generally about 1mm, adapter sleeve is connected with luminescence unit through joint pin, joint pin inserts connecting hole reserved on luminescence unit LEDPCB, by hot riveting, adapter sleeve and luminescence unit are linked together closely; The opposite side of adapter sleeve is provided with the groove matched with light conductor cross sectional shape, and light conductor is inserted bottom portion of groove by group immediately, adapter sleeve can be connected with light conductor, and like this, luminescence unit and light conductor have also just coupled together closely.
Luminescence unit of the present invention comprises: the PCB substrate of luminescence chip, carrying luminescence chip, and luminescence chip can be a kind of color or multiple color combination.
Luminescence unit of the present invention is connected with adapter sleeve by riveted joint, welding or other modes, and luminescence unit can be one; Also can be two, be installed on light conductor both sides respectively.
Framework of the present invention is white moulding, for carrying luminescence unit, light conductor and wiring board, be printed on the light conductor of reflecting pattern, as required, at one end or two ends be connected with luminescence unit by adapter sleeve, then be installed in white framework, finally will carry the PCB of luminescence chip and be installed on the wiring board of framework bottom by being welded together, forming transmission light source for contact image sensor.Transmission light source for contact image sensor is connected with external control circuit by the connector be installed on wiring board, is controlled the switch of illuminator by external control circuit.The light that luminescence unit sends enters light conductor from the end of light conductor, by the reflective graphics being printed on light conductor bottom, light is transmitted to afterbody, and equably from the top exit portal injection of light conductor, be irradiated on original copy, homology figure on original copy is by a part of light absorption, reflection, fractional transmission, there is no the place of figure, the most of light be irradiated on original copy just penetrates original copy, the information of the transmission image on original copy is just sent into the image read-out on transmitted light source opposite by these light through original copy, the optical signal received is changed into the signal of telecommunication and processes by image read-out.
Transmitted light source of the present invention, both can use as image read-out transmitted light source separately, also can combinationally use with image read-out.This light source has flexible and convenient to use, the high and uniformity of transmitted light brightness.Meanwhile, also there is easy for installation, the advantage such as production technology good, structure is simple, long service life.
Accompanying drawing explanation
Fig. 1 is the external structure schematic diagram of the embodiment of the present invention 1.
Fig. 2 is the internal structure schematic diagram of the embodiment of the present invention 1.
Fig. 3 is the A-A profile of the embodiment of the present invention 1.
Fig. 4 is the external structure schematic diagram of embodiments of the invention 2.
Fig. 5 is the sectional schematic diagram of a kind of using state of the present invention.
Fig. 6 is the sectional schematic diagram of the another kind of using state of the present invention.
Detailed description of the invention
Below by instantiation, also the present invention is described in detail by reference to the accompanying drawings.
A kind of transmission light source for contact image sensor, comprise: luminescence unit, framework, light conductor, wiring board, adapter sleeve, glass plate, it is characterized in that described luminescence unit is connected with light conductor by adapter sleeve, light conductor cross sectional shape is drops, light conductor lower flat is printed with reflecting pattern, described reflecting pattern is for using serigraphy white reflection ink pattern, and reflecting pattern is the strip of width about 1mm.
Adapter sleeve of the present invention is rectangle White-opalescent moulding, adapter sleeve side is at least provided with two joint pins, the diameter of joint pin is generally about 1mm, adapter sleeve is connected with luminescence unit through joint pin, joint pin inserts connecting hole reserved on luminescence unit LEDPCB, by hot riveting, adapter sleeve and luminescence unit are linked together closely; The opposite side of adapter sleeve is provided with the groove matched with light conductor cross sectional shape, and light conductor is inserted bottom portion of groove by group immediately, adapter sleeve can be connected with light conductor, and like this, luminescence unit and light conductor have also just coupled together closely.
Luminescence unit of the present invention comprises: the PCB substrate of luminescence chip, carrying luminescence chip, and luminescence chip can be a kind of color or multiple color combination.
Fig. 1 is the general assembly drawing of the exemplary embodiment of transmitted light source of the present invention, is labeled as in figure: luminescence unit 1, adapter sleeve 2, framework 3, light conductor 4, wiring board 5, connector 6, glass plate 7, image read-out 8, original copy 9, LEDPCB101, luminescence chip 102, printed pattern 401
Luminescence unit 1 is the luminous component of transmitted light source of the present invention, it is by circuit board 101(LEDPCB) and the LED luminescence chip 102 be welded on LEDPCB101 form, be responsible for and the invention provides light source, wherein LED luminescence chip 102 can be monochromatic, also can be that several color combination uses, it is same as the prior art, and this does not repeat.
As can be seen from Figure 1, luminescence unit 1 of the present invention is connected with adapter sleeve 2 by riveted joint, welding or other modes, light conductor 4 inserts adapter sleeve 2 certain depth, adapter sleeve is White-opalescent moulding, have stronger reflection function to light, like this, the light overwhelming majority that luminescence unit 1 sends will enter light conductor 4, can not be diffused to other local, add the utilization ratio of light.
Light conductor 4 is optical transmission components of the present invention, and its effect is exactly the afterbody light that above-mentioned luminescence unit 1 sends being transmitted to equably transmitted light source, and is reflected away from exit portal by light by the figure be printed on light conductor 4, is radiated at uniformly on original copy.As shown in Figure 2, the only scattered light that luminescence unit 1 sends, after entering light conductor 4, can reflect, the phenomenon such as scattering, these light part in light conductor 4 is directly penetrated by light-emitting window, another part light can be irradiated on reflecting pattern 401, and these light are reflexed to again light-emitting window injection by reflecting pattern 401.Like this, the light that luminescence unit 1 sends just can be transmitted to afterbody from end by light conductor 4, by changing the shape of printed pattern 401, size, position, volume reflection and the reflection direction of light can be changed, thus the uniformity of adjustment brightness, the light uniformity that light-emitting window is penetrated, ensure that properties of product.
Cross section Design as Fig. 3 light conductor 4 is drops, is conducive to the light that better reflection or collection frame 3 reflect, thus increases the utilization ratio of light, the uniformity of raising light, thus improves the performance of transmitted light source.Meanwhile, adapter sleeve is inserted in the light conductor end of this kind of shape, and do not need to carry out secondary operations, can reliably fix, light conductor 4 not easily rotates, accurate positioning.
Framework 3 is carriers of carrying luminescence unit 1, light conductor 4, wiring board 5; its effect is formed a whole at luminescence unit 1, light conductor 4, wiring board 5; protect light conductor 4 not damaged by external force simultaneously; because any scuffing or defect all can affect light conductor 4 conducting light, affect the performance of transmitted light source.Its another important function is that framework 3 can prevent extraneous light from entering light conductor 4, also can prevent the light of light conductor inside from penetrating from other positions, causes the uneven or intensity of light to reduce.Meanwhile, framework 3 also has the effect of reflection ray.As shown in Figure 3: the light sent when illuminator 1 enters light conductor from light conductor 4 end, because this light is scattered light, so have the both sides that some light is irradiated to light conductor, these light can penetrate from the side of light conductor 4, if do not taken measures, this part light will be lost, and causes the reduction of luminous intensity and the inhomogeneities of light, affects properties of product.Therefore framework 3 adopts White-opalescent moulding, it has stronger light reflection effect, when light is after the side injection of light conductor 4, will be irradiated on framework 3, the overwhelming majority of these light is reflected back light conductor by framework 3 again, continues directed forwards or penetrates from light-emitting window.
The effect of adapter sleeve 2 is exactly light conductor 4 and luminescence unit 1 are coupled together.By adapter sleeve 2, light conductor 4 and luminescence unit 1 are linked together, excesssive gap between luminescence unit 1 and light conductor 4 can be prevented, the luminous energy that luminescence unit 1 is sent directly enters light conductor, simultaneously, the light that adapter sleeve 2 can also prevent luminescence unit 1 from sending leaks from the joint portion with light conductor 4, has an impact after also preventing outside light from entering light conductor 4 from joint portion to ordinary ray.
The effect one of glass plate 7 is carrying original copys 9, and effect two is dust-proof, prevents dust from entering framework, affects the illumination effect of light conductor.
Fig. 4 is another embodiment of the present invention, is respectively connected with a luminescence unit 1 at the two ends of light conductor 4.The light that two luminescence units 1 send, enters light conductor from the two ends of light conductor 4 respectively, its conduction and injection principle consistent with above-mentioned principle, this tire out states.Adopt this embodiment, not only can improve the brightness of transmitted light source, also can improve the homogeneity of light source, for the transmitted light source that length is longer, effect is more obvious simultaneously.
Fig. 5 is an Application Example of the present invention, and transmitted light source of the present invention, is independently present in outside image read-out.Control wire size controls luminescence unit opening and closing by connector 6 and wiring board 5.The light that luminescence unit sends penetrates from light conductor 4, be irradiated on original copy, homology figure on original copy is by a part of light absorption, reflection, fractional transmission, there is no the place of figure, the most of light be irradiated on original copy just penetrates original copy, the information of the transmission image on original copy is just sent into the image read-out on transmitted light source opposite by these light through original copy, and the optical signal received is changed into the signal of telecommunication and processes by image read-out.
Fig. 6 is further application of the invention embodiment, transmitted light source of the present invention is present in image read-out inside as a luminescence unit, two image read-out relative usages, just can obtain the relevant information of the double-edged homology figure of original copy simultaneously, substantially increase operating efficiency.
Claims (1)
1. a transmission light source for contact image sensor, comprise: luminescence unit, framework, light conductor, wiring board, adapter sleeve, glass plate, it is characterized in that described luminescence unit comprises luminescence chip, the PCB substrate of carrying luminescence chip, luminescence unit is connected with light conductor by adapter sleeve, adapter sleeve is rectangle White-opalescent moulding, light conductor cross sectional shape is drops, light conductor lower flat is printed with reflecting pattern, described reflecting pattern is for using serigraphy white reflection ink pattern, reflecting pattern is the strip of width about 1mm, adapter sleeve side is at least provided with two joint pins, adapter sleeve is connected with luminescence unit through joint pin, the opposite side of adapter sleeve is provided with the groove matched with light conductor cross sectional shape, light conductor inserts bottom portion of groove and is connected with adapter sleeve, realize the connection of luminescence unit and light conductor, described framework is White-opalescent moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210343624.4A CN102865512B (en) | 2012-09-17 | 2012-09-17 | Transmission light source for contact image sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210343624.4A CN102865512B (en) | 2012-09-17 | 2012-09-17 | Transmission light source for contact image sensor |
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| Publication Number | Publication Date |
|---|---|
| CN102865512A CN102865512A (en) | 2013-01-09 |
| CN102865512B true CN102865512B (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210343624.4A Active CN102865512B (en) | 2012-09-17 | 2012-09-17 | Transmission light source for contact image sensor |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106370472B (en) * | 2016-10-13 | 2023-06-27 | 浙江天行健水务有限公司 | Quantitative device for water quality available chlorine on-line detection equipment |
Citations (6)
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|---|---|---|---|---|
| CN1462143A (en) * | 2002-05-28 | 2003-12-17 | 景传光电股份有限公司 | Thread like light source used in image fetch device and liquid crystal module |
| CN101385327A (en) * | 2006-02-15 | 2009-03-11 | 罗姆股份有限公司 | Image reading apparatus, and its manufacturing method |
| CN101949509A (en) * | 2010-08-20 | 2011-01-19 | 威海华菱光电有限公司 | Light source for image reading device |
| CN201919014U (en) * | 2011-01-29 | 2011-08-03 | 廖锦新 | Smart home system |
| CN202056665U (en) * | 2010-03-25 | 2011-11-30 | 优志旺电机株式会社 | Linear light source device |
| CN202733691U (en) * | 2012-09-17 | 2013-02-13 | 威海华菱光电股份有限公司 | Transmission light source used for image reading device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004193773A (en) * | 2002-12-09 | 2004-07-08 | Rohm Co Ltd | Image read apparatus and unit used for the same |
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- 2012-09-17 CN CN201210343624.4A patent/CN102865512B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1462143A (en) * | 2002-05-28 | 2003-12-17 | 景传光电股份有限公司 | Thread like light source used in image fetch device and liquid crystal module |
| CN101385327A (en) * | 2006-02-15 | 2009-03-11 | 罗姆股份有限公司 | Image reading apparatus, and its manufacturing method |
| CN202056665U (en) * | 2010-03-25 | 2011-11-30 | 优志旺电机株式会社 | Linear light source device |
| CN101949509A (en) * | 2010-08-20 | 2011-01-19 | 威海华菱光电有限公司 | Light source for image reading device |
| CN201919014U (en) * | 2011-01-29 | 2011-08-03 | 廖锦新 | Smart home system |
| CN202733691U (en) * | 2012-09-17 | 2013-02-13 | 威海华菱光电股份有限公司 | Transmission light source used for image reading device |
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| CN102865512A (en) | 2013-01-09 |
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