CN101472037A - Scanning module and light source projection device thereof - Google Patents
Scanning module and light source projection device thereof Download PDFInfo
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- CN101472037A CN101472037A CNA2007103023429A CN200710302342A CN101472037A CN 101472037 A CN101472037 A CN 101472037A CN A2007103023429 A CNA2007103023429 A CN A2007103023429A CN 200710302342 A CN200710302342 A CN 200710302342A CN 101472037 A CN101472037 A CN 101472037A
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- light source
- reflecting piece
- luminescence component
- intermediate ends
- scan module
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Abstract
The invention relates to a scanning module and a light source projection device thereof. The light source projection device is positioned on one side of a scanning platform, files are placed on the scanning platform, and the light source projection device comprises a light-emitting component used for projecting and scanning the light source, and at least one reflecting sheet positioned on the side edge of the light-emitting component and used for reflecting and scanning the light source to the files and a light-sensing component used for receiving the reflection rays reflected by the files, wherein, the reflecting sheet comprises a first end, a second end and a middle end; the first end and the second end are respectively positioned on both sides of the middle end; and the curvature of the reflecting sheet is gradually increased from the middle end to the first end and the second end.
Description
Technical field
The present invention is relevant for a kind of light source projection device, particularly a kind of scan module and light source projection device thereof.
Background technology
Along with the progress of science and technology, optical scanner (optical scanner) has become the computer peripheral apparatus of day by day popularizing.The mode of optical scanner pick-up image mainly with light-emitting device with irradiate light to the file to be scanned, after the reflection of light via file to be scanned, be directed to photosensory assembly by set of lenses again, and photosensory assembly can detect the light of zones of different reflection varying strength on the file, and reflecting light is converted to numerical data, continuously read in data and be reassembled as the computer image file with scanning software.
See also Fig. 1 and shown in Figure 2, desirable light-emitting device should have uniform Luminance Distribution, but since present scan module mostly with Charged Coupled Device (CCD) A1 as photosensory assembly, and with fluorescent tube A2 as light-emitting device, use and utilize fluorescent tube A2 to illuminate file A5 to be scanned on the scanning platform A3, and via the light of reflecting piece A6 reflection fluorescent tube A2 to file A5 to be scanned.But because the light of fluorescent tube A2 can be more high than the briliancy at two ends in the briliancy of mid portion, or be subject to the optical lens characteristic, make photosensory assembly be subjected to light inhomogeneous, after causing speculum A4 that light is reflexed to Charged Coupled Device A1, it is brighter that its light that receives presents pars intermedia branch, the part of two sides is then darker, the quality of influence scanning.
See also shown in Figure 3, be subjected to the uneven problem of light for solving photosensory assembly, just there is scan module that two corresponding light supply apparatuses are set, with the light source that is throwed by relative fluorescent tube A2 two sides of fluorescent tube A2 are partly carried out light filling, though improve two sidepiece beam split briliancy, but make the briliancy of mid portion too high, in addition, each light supply apparatus all need be provided with drive circuit, could light fluorescent tube respectively, not only cause power consumption to heighten, also improve the manufacturing cost of scan module simultaneously, and then cause the scan module volume too huge, heaviness, and then be difficult for by problems such as driver drives.
The another kind of mode that solves photosensory assembly is a painting black printing ink on reflecting piece, wherein, the zone line coating larger area black ink of reflecting piece, two side areas then is coated with the black ink than small size, or in the black ink of the zone line of reflecting piece coating comparatively dense, two side areas then is coated with more sparse black ink, uses to reach the brilliant degree that reduces mid portion, the purpose that improves the brilliant degree of two sides part.But this kind mode is painting black printing ink on reflecting piece arduously, not only expends the plenty of time, makes the manufacturing cost of reflecting piece roll up simultaneously.
Hence one can see that, how to improve the light source projects structure of scan module, make photosensory assembly be subjected to light even, and solve the problems such as the manufacturing cost that two light supply apparatuses bring promotes, power consumption is big that are provided with, and then avoid the scan module volume too huge, heavy, and improve problems such as driver drive, be the problem that the inventor and the technical field person who is engaged in these relevant industries desire most ardently improvement.
Summary of the invention
In view of this, the invention provides a kind of light source projection device of scan module, be positioned at the side of scanning platform, place file on the scanning platform, light source projection device comprises: luminescence component, in order to the projection scanning light source; At least one reflecting piece, be positioned at the side of luminescence component, to file, reflecting piece comprises first end, second end and intermediate ends in order to the reflective scan light source, first end and second end lay respectively at two sides of intermediate ends, and the curvature of reflecting piece is increased progressively towards first end, second end by intermediate ends; And photosensory assembly, in order to receive the reflection ray that file reflected.
The present invention also provides a kind of scan module, comprises: scanning platform, in order to place file; Luminescence component is in order to the projection scanning light source; At least one reflecting piece, be positioned at the side of luminescence component, to file, reflecting piece comprises first end, second end and intermediate ends in order to the reflective scan light source, first end and second end lay respectively at two sides of intermediate ends, and the curvature of reflecting piece is increased progressively towards first end, second end by intermediate ends; And photosensory assembly, in order to receive the reflection ray that file reflected.
The base this, the intermediate ends of reflecting piece can be different from the curvature changing of intermediate ends towards second end towards the curvature changing of first end, or intermediate ends can be same as the curvature changing of intermediate ends towards second end towards the curvature changing of first end.
Moreover first end of reflecting piece, second end and intermediate ends can be positioned on the same horizontal plane, or first end of reflecting piece, second end and intermediate ends can be positioned on the different horizontal planes.
In addition, the present invention more can comprise: plural reflector plate is positioned at two ends of luminescence component, the scanning light source that is throwed in order to reflection luminescence component two ends.
The present invention more can comprise: lamp socket, and in order to carrying luminescence component and reflecting piece.
The curvature of reflecting piece of the present invention by intermediate ends towards first end, second end increases progressively, with reflection scanning light source that luminescence component was throwed to file, use and make file evenly be subjected to light, the scanning light source of avoiding optical assembly two ends to be throwed causes photosensory assembly to be subjected to the problem of light inequality because of intensity is little, not only do not need extra process black printing ink on reflecting piece, effectively reduce the manufacturing cost of scan module, in addition, the present invention also can solve and commonly use scan module and two light supply apparatuses are set and then cause volume too huge, heavy reaching is difficult for by problems such as driver drives, and then can reduce the power consumption of scan module.
Relevant preferred embodiment of the present invention and effect thereof, cooperate now graphic explanation as after.
Description of drawings
Fig. 1 is a structural representation of commonly using scan module.
Fig. 2 is the radiance of the commonly using scanner line chart of writing music.
Fig. 3 is the another kind of structural representation of commonly using scan module.
Fig. 4 is the schematic perspective view of the light source projection device of first embodiment of the invention.
Fig. 5 is the radiance of the light source projection device of the first embodiment of the invention line chart of writing music.
Fig. 6 A is the structural representation () of the scan module of first embodiment of the invention.
Fig. 6 B is the structural representation (two) of the scan module of first embodiment of the invention.
Fig. 7 is the schematic perspective view of the light source projection device of second embodiment of the invention.
The primary clustering symbol description
10.......... scanning platform
20.......... luminescence component
30.......... reflecting piece
31.......... first end
32.......... intermediate ends
33.......... second end
40.......... lamp socket
50.......... reflector plate
60.......... photosensory assembly
80.......... file
A1.......... Charged Coupled Device
A2.......... fluorescent tube
A3.......... on the scanning platform
A4.......... speculum
A5.......... file to be scanned
A6.......... reflecting piece
Embodiment
Please refer to Fig. 4, Fig. 5, Fig. 6 A and Fig. 6 B, be first embodiment of the invention, Fig. 4 is the schematic perspective view of light source projection device, and Fig. 5 is the radiance of the light source projection device line chart of writing music, Fig. 6 A is the structural representation () of scanner, and Fig. 6 B is the structural representation (two) of scanner.
Scan module comprises: scanning platform 10, luminescence component 20, reflecting piece 30, lamp socket 40, photosensory assembly 60.
Reflecting piece 30, general elongated lamellar body, wherein a reflecting piece 30 is positioned at a side of luminescence component 20, another reflecting piece 30 is positioned at the side in addition of luminescence component 20, in order to the reflective scan light source to file 80, reflecting piece 30 comprises first end 31, the intermediate ends 32 and second end 33, first end 31 and second end 33 lay respectively at two sides of intermediate ends 32, reflecting piece 30 is in the curvature of first end 31 and second end 33 big (as Fig. 6 A), curvature in intermediate ends 32 less (as Fig. 6 B), wherein, the curvature of reflecting piece 30 is increased progressively towards first end 31 by intermediate ends 32, also for increasing progressively, promptly the curvature of reflecting piece 30 is increased progressively towards two sides by intermediate ends 32 intermediate ends 32 of reflecting piece 30 towards the curvature changing of second end 33.
In above stated specification, the intermediate ends 32 of reflecting piece 30 can be different from the curvature changing of intermediate ends 32 towards second end 33 towards the curvature changing of first end 31, the curvature that is reflecting piece 30 is by the progressive increase rate difference of intermediate ends 32 towards two sides, moreover, the intermediate ends 32 of reflecting piece 30 can be same as the curvature changing of intermediate ends 32 towards second end 33 towards the curvature changing of first end 31, and promptly the curvature of reflecting piece 30 is identical towards the progressive increase rate of two sides by intermediate ends 32.
In addition, first end 31 of reflecting piece 30, intermediate ends 32 and second end 33 can be positioned on the same horizontal plane, or first end 31 of reflecting piece 30, intermediate ends 32 and second end 33 can be positioned on the different horizontal planes.
When the file 80 projection scanning light sources of the luminescence component on the lamp socket 40 20 on scanning platform 10, because the intensity that the intensity of the scanning light source that luminescence component 20 2 ends are throwed is throwed less than luminescence component 20 intermediate ends, therefore can reflect the scanning light source that luminescence component 20 2 ends be throwed by the section that reflecting piece 30 both sides curvature increase progressively, simultaneously by less section reflection luminescence component 20 scanning light sources that intermediate ends is throwed of curvature in the middle of the reflecting piece 30, make file 80 evenly be subjected to light and obtain briliancy enough and that uniformity is good and show (as shown in Figure 5).After this, can be received from the reflection ray that file 80 is reflected by photosensory assembly 60.
Please refer to the schematic perspective view of Fig. 7 for the light source projection device of second embodiment of the invention.
In the present embodiment, more can comprise: plural reflector plate 50, be positioned at two ends of luminescence component 20, because the intensity that the intensity of the scanning light source that luminescence component 20 2 ends are throwed is throwed less than luminescence component 20 intermediate ends, therefore can reflect the scanning light source that luminescence components 20 2 ends are throwed by reflector plate 50, make file 80 can evenly be subjected to light.
The present invention with the reflecting piece of the different curvature reflection scanning light source that luminescence component was throwed to file, wherein, the curvature of reflecting piece by intermediate ends towards first end, second end increases progressively, first end and the less scanning light source of second end reflection luminescence component two end intensity by curvature, use and make file evenly be subjected to light, the scanning light source of avoiding luminescence component two ends to be throwed causes photosensory assembly to be subjected to the problem of light inequality because of intensity is little, not only do not need extra process black printing ink on reflecting piece, and can effectively reduce the manufacturing cost of scan module, in addition, the present invention also can solve and commonly use scan module and two light supply apparatuses are set and then cause volume too huge, heavy reaching is difficult for by problems such as driver drives, and then can reduce the power consumption of scan module.
Though technology contents of the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; anyly have the knack of this skill person; do not breaking away from spirit of the present invention a little change and the retouching done; all should be covered by in the category of the present invention, so protection scope of the present invention is as the criterion when looking the claim person of defining.
Claims (10)
1, a kind of light source projection device of scan module is positioned at the side of one scan platform, places a file on this scanning platform, and this light source projection device comprises:
One luminescence component is in order to projection one scan light source;
At least one reflecting piece, be positioned at the side of this luminescence component, in order to reflect this scanning light source to this document, this reflecting piece comprises one first end, one second end and an intermediate ends, this first end and this second end lay respectively at two sides of this intermediate ends, and the curvature of this reflecting piece is increased progressively towards this first end, this second end by this intermediate ends; And
One photosensory assembly is in order to receive the reflection ray that this document reflected.
2, the light source projection device of scan module as claimed in claim 1 is characterized in that: this intermediate ends of this reflecting piece is to be same or different from the curvature changing of this intermediate ends towards this second end towards the curvature changing of this first end.
3, the light source projection device of scan module as claimed in claim 1 is characterized in that: this of this reflecting piece first end, this second end and this intermediate ends be positioned on the same horizontal plane, wherein one on the different horizontal plane.
4, the light source projection device of scan module as claimed in claim 1 is characterized in that: more comprise: plural reflector plate is positioned at two ends of this luminescence component, in order to reflect this scanning light source that these luminescence component two ends are throwed.
5, the light source projection device of scan module as claimed in claim 1 is characterized in that: more comprise: a lamp socket, and in order to carry this luminescence component and this reflecting piece.
6, a kind of scan module comprises:
The one scan platform is in order to place a file;
One luminescence component is in order to projection one scan light source;
At least one reflecting piece, be positioned at the side of this luminescence component, in order to reflect this scanning light source to this document, this reflecting piece comprises one first end, one second end and an intermediate ends, this first end and this second end lay respectively at two sides of this intermediate ends, and the curvature of this reflecting piece is increased progressively towards this first end, this second end by this intermediate ends; And
One photosensory assembly is in order to receive the reflection ray that this document reflected.
7, scan module as claimed in claim 6 is characterized in that: this intermediate ends of this reflecting piece is to be same or different from the curvature changing of this intermediate ends towards this second end towards the curvature changing of this first end.
8, scan module as claimed in claim 6 is characterized in that: this of this reflecting piece first end, this second end and this intermediate ends be positioned on the same horizontal plane, wherein one on the different horizontal plane.
9, scan module as claimed in claim 6 is characterized in that: more comprise: plural reflector plate is positioned at two ends of this luminescence component, in order to reflect this scanning light source that these luminescence component two ends are throwed.
10, scan module as claimed in claim 6 is characterized in that: more comprise: a lamp socket, and in order to carry this luminescence component and this reflecting piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007103023429A CN101472037A (en) | 2007-12-25 | 2007-12-25 | Scanning module and light source projection device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007103023429A CN101472037A (en) | 2007-12-25 | 2007-12-25 | Scanning module and light source projection device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101472037A true CN101472037A (en) | 2009-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007103023429A Pending CN101472037A (en) | 2007-12-25 | 2007-12-25 | Scanning module and light source projection device thereof |
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| Country | Link |
|---|---|
| CN (1) | CN101472037A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102905040A (en) * | 2011-07-27 | 2013-01-30 | 3M创新有限公司 | Imaging system for supporting documents |
-
2007
- 2007-12-25 CN CNA2007103023429A patent/CN101472037A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102905040A (en) * | 2011-07-27 | 2013-01-30 | 3M创新有限公司 | Imaging system for supporting documents |
| CN102905040B (en) * | 2011-07-27 | 2016-04-20 | 3M创新有限公司 | For the imaging system of documentary evidence imaging |
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Open date: 20090701 |