CN101949509A - Light source for image reading device - Google Patents
Light source for image reading device Download PDFInfo
- Publication number
- CN101949509A CN101949509A CN2010102584625A CN201010258462A CN101949509A CN 101949509 A CN101949509 A CN 101949509A CN 2010102584625 A CN2010102584625 A CN 2010102584625A CN 201010258462 A CN201010258462 A CN 201010258462A CN 101949509 A CN101949509 A CN 101949509A
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- light
- light conductor
- shell
- light source
- lighting source
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Abstract
The invention discloses a novel light source for an image reading device. The light source is provided with a light-emitting unit, a casing and a light-guiding body. The invention is characterized in that the light-emitting unit is connected with the casing through a joint sleeve. The invention overcomes the defects of the existing light source that the light-guiding body is easy to fall off, light can be leaked from the joint of the light-emitting unit and the light-guiding body, the performance is not stable, etc. Meanwhile, as a groove is designed on the joint sleeve and a boss is designed on the casing according to the specific rules, the light source can be cut off according to demands so as to meet various demands on length and the light source has the advantages of low cost, tight connection, reliable fixture, stable performance, long service life and the like.
Description
Technical field
The present invention relates to novel image read-out lighting source, is a kind of combined type image read-out lighting source specifically.
Background technology
Along with the development of information technology, the application of contact-type image sensor (CIS) more and more widely, and is also more and more higher to the requirement of contact-type image sensor, and kind is also more and more.Supporting with it lighting source is an indispensable critical component in the contact-type image sensor (CIS), and its performance directly influences the performance of contact-type image sensor.Therefore, also just more and more higher to the requirement of lighting source, particularly also more and more to the requirement of different length.We know, the length of the lighting source that existing contact imageing sensor (CIS) is used all is to determine according to sweep length, every kind of sweep length substantially all needs the lighting source of respective length corresponding with it, and the lighting source of every kind of length just needs a whole set of mould to finish, and is with high costs.Simultaneously, existing leaded light bar also exist fixing unreliable, problem such as abnormal sound is arranged, these problems can cause luminescence unit can not closely to contact with light conductor, cause the conductive quantity instability of light leak or light, thereby directly influence the performance of contact-type image sensor.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of and not only can satisfy multiple length requirement, reduces cost, simultaneously again can secure fixation, installation, and the image read-out lighting source of dependable performance.
The present invention reaches by following measure.
A kind of image read-out lighting source comprises: luminescence unit, shell, light conductor, adapter sleeve is characterized in that described luminescence unit is connected with shell by adapter sleeve.
Luminescence unit of the present invention comprises: the PCB substrate of illuminator, carrying illuminator.
Luminescence unit of the present invention is connected with adapter sleeve by riveted joint, welding or other modes.
Shell of the present invention is connected with light conductor by buckle, draw-in groove mode, several grooves generally are set on light conductor, on the corresponding position of shell, several boss are set, behind shell that light conductor is packed into, boss in the described shell just snaps in the groove on the light conductor, shell and light conductor are combined closely, and light conductor just can not come off or left and right sides play in shell.Every specific distance a boss is set on shell, the position of these boss is according to the requirement of length of illumination design.The shell that assembles and light conductor are inserted adapter sleeve, and the boss on the shell just snaps in the groove on the adapter sleeve, and luminescence unit and light conductor are coupled together.The light that luminescence unit sends enters light conductor, by the reflective graphics that is printed on the light conductor light is transmitted to afterbody, and equably from the exit portal ejaculation of light conductor, shines on the original copy.
The present invention only needs a mold, and the lighting source of various full-lengths not only can be provided, and the light source of random length also can be provided, and greatly reduces product cost, simultaneously, also has advantages such as easy for installation, dependable performance, long service life.
Description of drawings.
Fig. 1 is the general assembly drawing of one exemplary embodiment of the present invention.
Fig. 2 is the assembling section according to adapter sleeve of the present invention and shell.
Fig. 3 is the assembling section according to shell of the present invention and light conductor.
Fig. 4 is the general assembly drawing of another exemplary embodiment of the present invention.
Fig. 5 is that adjustable length of the present invention is blocked schematic diagram.
The specific embodiment.
Also the present invention is described in detail in conjunction with the accompanying drawings below by instantiation.
Fig. 1 is the general assembly drawing of the exemplary embodiment of lighting source of the present invention, is labeled as among the figure: luminescence unit 1, adapter sleeve 2, shell 3, light conductor 4.
Luminescence unit 1 is the luminous component of lighting source of the present invention, and it is made up of circuit board (PCB) and the LED illuminator that is welded on the PCB, is responsible for and the invention provides light source, and it is same as the prior art, and this does not give unnecessary details.
Light conductor 4 is optical transmission components of the present invention, and its effect is exactly the afterbody that the light that above-mentioned luminescence unit 1 sends is transmitted to equably lighting source, and by the figure that is printed on the light conductor 4 light is reflected away from exit portal, is radiated on the original copy uniformly.The problem that existing lighting source exists light conductor to come off from shell has easily caused the lighting source unstable properties, also just must influence the performance of contact-type image sensor (CIS).As can be seen from Figure 3, the present invention is provided with groove 401 on light conductor 4, on shell 3, be provided with boss 301, with the boss 301 on the 401 embedding shells 3 of the groove on the light conductor 4, just light conductor 4 and shell 3 can be linked together closely, prevent light conductor 4 about shell 3 inside, move forward and backward, guaranteed the stability of above-mentioned lighting source performance.
Adapter sleeve 2 is critical components of the present invention, and its effect is exactly that light conductor 4 and the shell 3 that will assemble couple together with luminescence unit 1.As shown in Figure 2, the present invention is provided with boss 302 on shell 3, on adapter sleeve 2, be provided with groove 201, shell 3 is inserted adapter sleeve 2, boss 302 snaps in groove 201, like this, adapter sleeve 2 just is closely linked with shell 3, and as shown in Figure 1, adapter sleeve 2 fits together by riveted joint or other modes with luminescence unit 1, like this, just light conductor 4 and luminescence unit are linked together, prevent excesssive gap between luminescence unit 1 and the light conductor 4 by adapter sleeve 2, 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 the influence of light conductor 4 backs to ordinary ray from the joint portion.
Fig. 4 is an another embodiment of the present invention, and by adapter sleeve 2, each is connected with a luminescence unit 1 at the two ends of light conductor 4.Because the effect of boss 302 and groove 201, light conductor 4 and two luminescence units 1 can closely link together, and so not only can improve the brightness of lighting source, also can improve the homogeneity of light source simultaneously.
Fig. 5 is an another embodiment of the present invention, respectively the A from figure B light conductor 4 and shell 3 are blocked, just can obtain the lighting source of different length, with the needs of the contact-type image sensor (CIS) that satisfies different scanning length.Though light conductor in the past also can block use, owing to there is not groove 301, boss 401 causes light conductor to be connected defective tightness with shell, makes unstable properties.The present invention rule of thumb designs a plurality of boss 302 by specific distance on shell 3, length is as required blocked light conductor 4 and shell 3, then by the groove 201 on boss 302 and the adapter sleeve 2, light conductor 3 and luminescence unit 1 is closely coupled together.Just obtain connecting closely, fixing reliable, stable performance, can satisfy the lighting source of length requirement again.
Claims (3)
1. an image read-out lighting source is provided with luminescence unit, shell and light conductor, it is characterized in that luminescence unit is connected with shell through adapter sleeve.
2. a kind of image read-out lighting source according to claim 1 is characterized in that adapter sleeve is provided with groove, and shell is provided with boss, and adapter sleeve is connected with shell with groove through boss.
3. a kind of image read-out lighting source according to claim 1 is characterized in that luminescence unit is located at the end of light conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102584625A CN101949509A (en) | 2010-08-20 | 2010-08-20 | Light source for image reading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102584625A CN101949509A (en) | 2010-08-20 | 2010-08-20 | Light source for image reading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101949509A true CN101949509A (en) | 2011-01-19 |
Family
ID=43453097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102584625A Pending CN101949509A (en) | 2010-08-20 | 2010-08-20 | Light source for image reading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101949509A (en) |
Cited By (1)
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4908717A (en) * | 1988-06-04 | 1990-03-13 | Nippon Seimitsu Kogyo Kabushiki Kaisha | Image scanner using a rod-type light source |
| CN1671171A (en) * | 2004-03-17 | 2005-09-21 | 日本板硝子株式会社 | Line-illuminating device and image-scanning device incorporating the same |
| US20090303732A1 (en) * | 2008-06-10 | 2009-12-10 | Nippon Sheet Glass Company, Limited | Rod-shaped light guide and image reading device |
-
2010
- 2010-08-20 CN CN2010102584625A patent/CN101949509A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4908717A (en) * | 1988-06-04 | 1990-03-13 | Nippon Seimitsu Kogyo Kabushiki Kaisha | Image scanner using a rod-type light source |
| CN1671171A (en) * | 2004-03-17 | 2005-09-21 | 日本板硝子株式会社 | Line-illuminating device and image-scanning device incorporating the same |
| US20090303732A1 (en) * | 2008-06-10 | 2009-12-10 | Nippon Sheet Glass Company, Limited | Rod-shaped light guide and image reading device |
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 |
| 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 |
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Application publication date: 20110119 |