CN1222026A - Light path shifter of scanner - Google Patents
Light path shifter of scanner Download PDFInfo
- Publication number
- CN1222026A CN1222026A CN 97123499 CN97123499A CN1222026A CN 1222026 A CN1222026 A CN 1222026A CN 97123499 CN97123499 CN 97123499 CN 97123499 A CN97123499 A CN 97123499A CN 1222026 A CN1222026 A CN 1222026A
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- light
- image capture
- scanner
- driving member
- supply apparatus
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Abstract
A light-path moving device for scanner is based on the relative movement and features that a driver composed of two pulleys linked via leather belt and driven by motor is arranged in casing, light source and image pick-up unit are symmetrically fixed to both sides of leather belt in different direction, the reflector is fixed in casing and a longer light path is formed in deep space of casing while the light distance is constant during scanning.
Description
The present invention relates to a kind of optical path mobile device, be used to be maintained fixed the light path shifter of light distance in the particularly platform-type scanner.
The whole world is flourish down in the information industry, the use of computer and peripheral equipment thereof is more general, adds the facility of borderless international network (Internet), makes multimedia circulation more in vogue, therefore, a large amount of image datas are applied on the multimedia widely.
Present most static image all is by in the image scanner scanning back input computer, so that image scanner becomes the indispensable equipment of multimedia computer; And worldwide prominent manufacturer is for reducing inventory cost, so the popularization to the computer marketing changes the mode that employing " receives orders earlier; make shipment again ", this makes the manufacturer of relevant peripheral equipment face test in production efficiency and part stock management aspect, seek solution one after another, in the hope of raising the efficiency, shorten processing procedure and reducing cost.
Scanner is the product that relates to the optics utilization, its part that comprises is very wide and many, especially in limited shell space, often utilize the optical path length of several reflecting optics to be maintained fixed, and have long scanner that the manufacturing cost of image capture module (as CCD) will be reduced, and make easily and produce apart from the light distance.Therefore, if can be in the limited shell space of scanner, long-reach optics path that is maintained fixed and the use that reduces number of spare parts will help reduction, the lifting of packaging efficiency and the simplifying of part stock of product cost.Moreover lengthening light more helps to improve the quality of image scan apart from making the image capture module make production easily.
In present platform-type scanner, existing light path shifter utilizes single movable image capture device or eyeglass reflection interaction mode to read image.At first can be with reference to shown in Figure 1, the existing use of single movable image capture device in scanner, one motor 20 is set in the scanner shell 30, and with mainshaft gear 21 drive pulley 22, by the transmission of belt 26, between pulley 22,23, be parallel to glass 31 displacements slip to drive a sliding frame 100.When scanned document 1 places on the glass 31 of scanning area, via moving of sliding frame 100, after making light source 2 illuminate scanned document 1, make the multipath reflection of image through reflecting optics 3,4,5, and imaging reaches imaging data mat transmission line 11 in the processor 12 with signal to image capture module 10 (comprising lens and CCD) again.And optical path 8 just forms fixing light distance in sliding frame 100.
Yet, the sliding frame 100 that this single movable image capture device utilizes, the hardware cost costliness, and the length of desire lengthening optical path 8 needs by more reflecting optics or polygon prism, this number of spare parts that more makes device use increases, and hinders the product packaging efficiency.
Another kind of prior art is shown among Fig. 2, is the light path shifter of light source and reflecting optics interaction mode.Similarly, mainshaft gear 21 drive pulley 22 of motor 20, transmission by belt 26, between pulley 22,23, be parallel to glass 31 displacements slip to drive light source 2 and reflecting optics 3, increase multiple sets of teeth wheels 24,25 and belt 27 in addition to drive reflecting optics 6,7, and gear 23,24 was with 2: 1 ratio, when making light source 2 displacements scan the scanned document 1 that places on the glass 31, reflecting optics 6,7 displacements with Half Speed make the light of optical path 8 apart from the maintenance certain-length, thereby imaging is to image capture module 10.
But existing embodiment shown in Figure 2 must increase the multiple sets of teeth wheels and belt keeps the light distance between light source and the reflecting optics interaction certain, so that increase assembling man-hour of scanner, also because of using number of spare parts to increase the demand of cost and object stock control.
The object of the present invention is to provide a kind of light path shifter of scanner, number of spare parts capable of reducing using is simplified the stock of object, reduces hardware cost, and still can keep the optical path length of long distance, has usability and practicality on the industry.
The object of the present invention is achieved like this, and a kind of light path shifter of scanner promptly is provided, and it comprises: one group of driving mechanism comprises a drive source, assembly pulley and a driving member by described assembly pulley drive; One light supply apparatus comprises a light source and a speculum, and is fixed on the described driving member; One image capture unit comprises an image capture module, and is fixed on the described driving member reverse symmetry in the position of described light supply apparatus; One reflecting optics group is fixedly installed in a side of described driving member, and with the image capture module configuration to image capture unit of the light reflected in parallel of light supply apparatus; When described drive source drives driving member, make the constant speed displacement in the opposite direction of described light supply apparatus and image capture unit by described driving member, and keep light source constant to the distance of the light between the image capture module.
The advantage of apparatus of the present invention is, can reduce parts, promote packaging efficiency, and further simplify the parts library storage, and its volume-diminished, and have the light distance longer than prior art, and then the image capture module is made easily, to promote image quality.
Below in conjunction with accompanying drawing, embodiments of the invention are described, wherein:
Fig. 1 is the existing schematic diagram of single movable image capture device in scanner;
Fig. 2 is existing light source and the schematic diagram of reflecting optics interaction mode in scanner;
Fig. 3 is the use schematic diagram of light path shifter of the present invention in scanner;
Fig. 4 is the scanning mode schematic diagram of light path shifter of the present invention.
At first with reference to the light path shifter of scanner of the present invention shown in Figure 3, it comprises a drive source 20, is arranged at the side of scanner shell 30 inside, but its main shaft 21 drive gear set; One group of drive pulley is made up of two pulleys 22,23 and a belt 26; One light supply apparatus 50 comprises a light source 2 and a reflecting optics 3 on it, and this light supply apparatus 50 is driven displacement by a side of belt 26; One image capture unit 40, comprise an image capture module 10 on it, and this image capture module 10 comprises lens and an optical coupling element (CCD), and this image capture unit 40 can be moved displacement in reverse symmetry in the opposite side sideband of light supply apparatus 50 by belt 26; Reflecting optics 6,7 is fixedly arranged on the inside of scanner shell 30 and is positioned at a side of belt 26, and disposes with light reflected in parallel to image capture module 10 formation of image capture unit 40 of light supply apparatus 50.The relative configuration each other of above-mentioned each parts can be by clear learning among Fig. 3.
Continuation is with reference to figure 3, and when light supply apparatus 50 was fixed on the side of belt 26 and is positioned at position shown in Figure 3, image capture unit 40 was fixed on another side of belt 26 and the other end with respect to light supply apparatus 50.Therefore, when pulley 22 was driven in rotation, light supply apparatus 50 will the constant speed ground displacement in the opposite direction each other by the drive of belt 26 with image capture unit 40.
When scanned document 1 places glass 31 tops of scanning area of scanner, drive source 20 rotates with clockwise direction shown in Figure 3 with main shaft 21 drive pulley 22, then the below side of belt 26 just drives image capture unit 40 toward left dislocation, simultaneously drive pulley 23 is rotated in a clockwise direction, and then the top side of belt 26 just drives light supply apparatus 50 with the speed that is same as image capture unit 40 displacement of turning right at the same time.During displacement, the light source 2 on the light supply apparatus 50 illuminates file 1, and image reflexes to reflecting optics 6,7 through reflecting optics 3, images in the image capture module 10 on the image capture unit 40 at last.
Follow further scanning mode with reference to light path shifter of the present invention shown in Figure 4.Because light supply apparatus 50 and image capture unit 40 constant speed displacement in the opposite direction each other, so that the light distance that optical path 8 was maintained fixed in scan period, and the depth inner space that makes full use of scanner forms the length of optical path 8, make light of the present invention also long apart from light distance than prior art shown in Fig. 1,2, and then make the formation easier manufacturing of image capture module 10 because of long light distance, to reduce cost, improve image quality.
After the preferred embodiment of the light path shifter that describes scanner of the present invention in detail, the personage who is familiar with this technology can clearly understand, and can carry out various variations and change not breaking away under claim of the present invention and the spirit, for example, driving member can change steel wire into by belt.
Light path shifter according to scanner of the invention process, can simplify the assembly program of scanner light path mobile device, enhance productivity, and spare part reduces, reduce the hardware cost of product, and then optical path length of the present invention than the light of prior art apart from length, make of the formation easier manufacturing of image capture module, to improve the scan-image quality because of long light distance.
Claims (4)
1. the light path shifter of a scanner is characterized in that, it comprises: one group of driving mechanism comprises a drive source, assembly pulley and a driving member by described assembly pulley drive; One light supply apparatus comprises a light source and a speculum, and is fixed on the described driving member; One image capture unit comprises an image capture module, and is fixed on the described driving member reverse symmetry in the position of described light supply apparatus; One reflecting optics group is fixedly installed in a side of described driving member, and with the image capture module configuration to image capture unit of the light reflected in parallel of light supply apparatus; When described drive source drives driving member, make the constant speed displacement in the opposite direction of described light supply apparatus and image capture unit by described driving member, and keep light source constant to the distance of the light between the image capture module.
2. the light path shifter of scanner as claimed in claim 1 is characterized in that, described driving member is a driving belt.
3. the light path shifter of scanner as claimed in claim 1 is characterized in that, described driving member is a steel wire.
4. the light path shifter of scanner as claimed in claim 1 is characterized in that, described image capture module comprises lens and an optical coupling element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97123499 CN1222026A (en) | 1997-12-30 | 1997-12-30 | Light path shifter of scanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97123499 CN1222026A (en) | 1997-12-30 | 1997-12-30 | Light path shifter of scanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1222026A true CN1222026A (en) | 1999-07-07 |
Family
ID=5177179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97123499 Pending CN1222026A (en) | 1997-12-30 | 1997-12-30 | Light path shifter of scanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1222026A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100440917C (en) * | 2004-01-14 | 2008-12-03 | 兄弟工业株式会社 | Image reading apparatus |
| CN100446535C (en) * | 2005-11-12 | 2008-12-24 | 三星电子株式会社 | Image reading apparatus including driving module |
| CN101207690B (en) * | 2006-12-19 | 2011-07-20 | 东友科技股份有限公司 | Transmission device of scanner |
| CN102957835A (en) * | 2011-08-30 | 2013-03-06 | 珠海赛纳打印科技股份有限公司 | Optical module transmission gear, image reading device and image recording device |
-
1997
- 1997-12-30 CN CN 97123499 patent/CN1222026A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100440917C (en) * | 2004-01-14 | 2008-12-03 | 兄弟工业株式会社 | Image reading apparatus |
| US7525698B2 (en) | 2004-01-14 | 2009-04-28 | Brother Kogyo Kabushiki Kaisha | Image reading apparatus |
| CN100446535C (en) * | 2005-11-12 | 2008-12-24 | 三星电子株式会社 | Image reading apparatus including driving module |
| CN101207690B (en) * | 2006-12-19 | 2011-07-20 | 东友科技股份有限公司 | Transmission device of scanner |
| CN102957835A (en) * | 2011-08-30 | 2013-03-06 | 珠海赛纳打印科技股份有限公司 | Optical module transmission gear, image reading device and image recording device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |