CN202733691U - Transmission light source used for image reading device - Google Patents
Transmission light source used for image reading device Download PDFInfo
- Publication number
- CN202733691U CN202733691U CN2012204724511U CN201220472451U CN202733691U CN 202733691 U CN202733691 U CN 202733691U CN 2012204724511 U CN2012204724511 U CN 2012204724511U CN 201220472451 U CN201220472451 U CN 201220472451U CN 202733691 U CN202733691 U CN 202733691U
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- light
- light source
- light conductor
- adapter sleeve
- luminescence unit
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Abstract
The utility model discloses a transmission light source used for a novel image reading device. The transmission light source comprises a light emitting unit, a framework, a light guiding body, a circuit board, a connecting sleeve and a glass plate. The transmission light source is characterized in that the light emitting unit is connected with the light guiding body through the connecting sleeve; the section of the light guiding body is shaped like a water drop; and a light reflecting pattern is printed on the plane of the lower part of the light guiding body, is a white light reflecting ink pattern formed through silk screen printing, and is in a shape of a strip which is 1mm wide or so. The transmission light source is convenient to mount, has good production manufacturability, and can be used independently or used with the reading device; the light guiding body is used to improve the light utilization rate, reduce the amount of used light emitting chips, and greatly lower the cost; and the transmission light source further has the advantages of stable performance, long service life and the like.
Description
Technical field
The present invention relates to image read-out, specifically a kind of dependable performance, the high combined type image read-out transmitted light source of brightness.
Background technology
Along with the development of information technology, the application of image read-out (CIS) is more and more extensive, and is also more and more higher to the requirement of image read-out, and kind is also more and more.Supporting light source is indispensable critical component in the image read-out (CIS) with it, and its performance directly affects the performance of image read-out.Continuous expansion along with the image read-out application has also proposed Secretary to light source, and transmitted light source is exactly one of them.We know that 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 to the improving constantly of image read-out product requirement, new, higher requirement has been proposed also in the aspects such as the performance of supporting with it transmitted light source, price, manufacturability.All there is different problems in the existing various light sources that see through, such as expensive, fixing unreliable, production technology is poor, luminance shortage etc., these problems can directly 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 a kind of and not only can reduce cost, can reliably fix again, install simultaneously, has well production technology, dependable performance, the high image read-out transmitted light source of brightness.
The present invention reaches by following measure.
A kind of image read-out transmitted light source, 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, the light conductor cross sectional shape is drops, the light conductor lower flat is printed with reflecting pattern, described reflecting pattern is for using serigraphy white reflection printing ink figure, and reflecting pattern is the strip about width 1mm.
Adapter sleeve of the present invention is rectangle White-opalescent moulding, adapter sleeve one side is provided with two joint pins at least, the diameter of joint pin is generally about 1mm, adapter sleeve is connected with luminescence unit through joint pin, joint pin inserts the connecting hole of reserving on the luminescence unit LED PCB, by hot riveting, adapter sleeve and luminescence unit are linked together closely; The opposite side of adapter sleeve is provided with the groove that is complementary with the light conductor cross sectional shape, and group is inserted bottom portion of groove with light conductor 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, 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 respectively the light conductor both sides.
Framework of the present invention is white moulding, be used 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 the white framework, the wiring board that will carry at last the PCB of luminescence chip and be installed on the framework bottom forms the image read-out transmitted light source by being welded together.Image read-out is connected with external control circuit by the connector that is installed on the wiring board with transmitted light source, controls 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 that is printed on the light conductor bottom light is transmitted to afterbody, and penetrate from the top exit portal of light conductor equably, shine on the original copy, homology figure on the original copy is with a part of light absorption, reflection, the part transmission, the place that does not have figure, the most of light that shines on the original copy just penetrates original copy, these light that see through original copy are just sent into the information of the transmission image on the original copy image read-out on transmitted light source opposite, and image read-out changes into the signal of telecommunication with the optical signal that receives and processes.
Transmitted light source of the present invention both can use as the image read-out transmitted light source separately, also can be used in combination with image read-out.This light source has flexible and convenient to use, transmitted light brightness height and uniformity.Simultaneously, also has easy for installation, the advantage such as production technology good, simple in structure, long service life.
Description of drawings
Fig. 1 is the external structure schematic diagram of the embodiment of the invention 1.
Fig. 2 is the internal structure schematic diagram of the embodiment of the invention 1.
Fig. 3 is the A-A profile of the embodiment of the invention 1.
Fig. 4 is the external structure schematic diagram of embodiments of the invention 2.
Fig. 5 is a kind of sectional schematic diagram that uses state of the present invention.
Fig. 6 is the sectional schematic diagram of the another kind of use state of the present invention.
The specific embodiment
Also the present invention is described in detail by reference to the accompanying drawings below by instantiation.
A kind of image read-out transmitted light source, 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, the light conductor cross sectional shape is drops, the light conductor lower flat is printed with reflecting pattern, described reflecting pattern is for using serigraphy white reflection printing ink figure, and reflecting pattern is the strip about width 1mm.
Adapter sleeve of the present invention is rectangle White-opalescent moulding, adapter sleeve one side is provided with two joint pins at least, the diameter of joint pin is generally about 1mm, adapter sleeve is connected with luminescence unit through joint pin, joint pin inserts the connecting hole of reserving on the luminescence unit LED PCB, by hot riveting, adapter sleeve and luminescence unit are linked together closely; The opposite side of adapter sleeve is provided with the groove that is complementary with the light conductor cross sectional shape, and group is inserted bottom portion of groove with light conductor 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, 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 among the 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, LED PCB101, luminescence chip 102, printed pattern 401
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 depths, adapter sleeve is the White-opalescent moulding, light is had stronger reflection function, and like this, the light overwhelming majority that luminescence unit 1 sends will enter light conductor 4, can not diffuse to other places, increase the utilization ratio of light.
Cross section Design such as Fig. 3 light conductor 4 is drops, is conducive to the light that better reflection or collection frame 3 reflect, thereby increases utilization ratio, the raising uniformity of light of light, thereby improves the performance of transmitted light source.Simultaneously, adapter sleeve is inserted in the light conductor end of this kind shape, does not need to carry out secondary operations, can reliably fix, and light conductor 4 is difficult for rotation, accurate positioning.
Framework 3 is carriers of carrying luminescence unit 1, light conductor 4, wiring board 5; its effect is that luminescence unit 1, light conductor 4, wiring board 5 are formed a whole; protect simultaneously light conductor 4 not damaged by external force; because any scuffing or defective 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 that extraneous light from entering light conductor 4, can prevent that also the light of light conductor inside from penetrating from other positions, causes the inhomogeneous or strength decreased of light.Simultaneously, framework 3 also has the effect of reflection ray.As shown in Figure 3: the light that sends when illuminator 1 enters light conductor from light conductor 4 ends, because this light is scattered light, so have the both sides that part light shines light conductor, these light can penetrate from the side of light conductor 4, if do not take measures, this part light will be lost, and causes reducing and the inhomogeneities of light of luminous intensity, affects properties of product.Therefore framework 3 adopts the White-opalescent moulding, it has stronger light reflection effect, after light penetrates from the side of light conductor 4, will shine on the framework 3, the overwhelming majority of these light is reflected back light conductor by framework 3 again, continues to conduct forward or penetrate from light-emitting window.
The effect of adapter sleeve 2 is exactly that light conductor 4 and luminescence unit 1 are coupled together.By adapter sleeve 2 light conductor 4 and luminescence unit 1 are linked together, can prevent that luminescence unit 1 and light conductor 4 gaps are excessive, the luminous energy that luminescence unit 1 is sent directly enters light conductor, simultaneously, adapter sleeve 2 can also prevent that the light that luminescence unit 1 sends from leaking from the joint portion with light conductor 4, can prevent that also outside light from entering from the joint portion that light conductor 4 is rear to exert an influence to ordinary ray.
The effect one of glass plate 7 is carrying original copys 9, and effect two is dustproof, prevents that dust from entering framework, affects the illumination effect of light conductor.
Fig. 4 is another embodiment of the present invention, and each is connected with a luminescence unit 1 at the two ends of light conductor 4.Two light that luminescence unit 1 sends, the two ends from light conductor 4 enter light conductor respectively, and its conduction and ejaculation principle are consistent with above-mentioned principle, and this is tired stating.Adopt this embodiment, not only can improve the brightness of transmitted light source, also can improve the homogeneity of light source simultaneously, for the long transmitted light source of length, effect is more obvious.
Fig. 5 is an Application Example of the present invention, and transmitted light source of the present invention independently is present in outside the image read-out.The control wire size is by the switching of connector 6 and wiring board 5 control luminescence units.The light that luminescence unit sends penetrates from light conductor 4, shine on the original copy, homology figure on the original copy is with a part of light absorption, reflection, part transmission, the place that does not have figure, the most of light that shines on the original copy just penetrates original copy, these light that see through original copy are just sent into the information of the transmission image on the original copy image read-out on transmitted light source opposite, and image read-out changes into the signal of telecommunication with the optical signal that receives and processes.
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, have greatly improved operating efficiency.
Claims (3)
1. image read-out transmitted light source, 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, the light conductor cross sectional shape is drops, and the light conductor lower flat is printed with reflecting pattern.
2. a kind of image read-out transmitted light source according to claim 1, it is characterized in that adapter sleeve is rectangle White-opalescent moulding, adapter sleeve one side is provided with two joint pins at least, adapter sleeve is connected with luminescence unit through joint pin, the opposite side of adapter sleeve is provided with the groove that is complementary with the light conductor cross sectional shape, light conductor inserts bottom portion of groove and is connected with adapter sleeve, and the realization luminescence unit is connected with light conductor.
3. a kind of image read-out transmitted light source according to claim 1 is characterized in that luminescence unit comprises: the PCB substrate of luminescence chip, carrying luminescence chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204724511U CN202733691U (en) | 2012-09-17 | 2012-09-17 | Transmission light source used for image reading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204724511U CN202733691U (en) | 2012-09-17 | 2012-09-17 | Transmission light source used for image reading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202733691U true CN202733691U (en) | 2013-02-13 |
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ID=47659386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204724511U Expired - Fee Related CN202733691U (en) | 2012-09-17 | 2012-09-17 | Transmission light source used for image reading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202733691U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865512A (en) * | 2012-09-17 | 2013-01-09 | 威海华菱光电股份有限公司 | Transmission light source for contact image sensor |
| CN106355742A (en) * | 2016-08-26 | 2017-01-25 | 威海华菱光电股份有限公司 | +Transmission original reading device |
-
2012
- 2012-09-17 CN CN2012204724511U patent/CN202733691U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865512A (en) * | 2012-09-17 | 2013-01-09 | 威海华菱光电股份有限公司 | Transmission light source for contact image sensor |
| CN102865512B (en) * | 2012-09-17 | 2015-12-02 | 威海华菱光电股份有限公司 | Transmission light source for contact image sensor |
| CN106355742A (en) * | 2016-08-26 | 2017-01-25 | 威海华菱光电股份有限公司 | +Transmission original reading device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20210917 |