CN102081217B - Optical system and scanner using same - Google Patents
Optical system and scanner using same Download PDFInfo
- Publication number
- CN102081217B CN102081217B CN200910310653.9A CN200910310653A CN102081217B CN 102081217 B CN102081217 B CN 102081217B CN 200910310653 A CN200910310653 A CN 200910310653A CN 102081217 B CN102081217 B CN 102081217B
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- panel
- front panel
- lower side
- light source
- image sensor
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Abstract
The invention provides an optical system. The optical system comprises a shell, a light source module, a reflector and an image sensor, wherein the shell comprises a front panel, a back panel and a lower side plate, the front panel is used for placing a scanning document, the back panel is opposite to the front panel, and the lower side plate is connected between the front panel and the back panel; the light source module is arranged at an intersection place of the front panel and the lower side plate; one end of the reflector butts against the back panel and faces towards the front panel; the image sensor is arranged at an intersection place of the back panel and the lower side plate; a light ray emitted by the light source module is projected to the reflector and reflected by the reflector to form uniform area light sources on the front panel; and the image sensor collects the light ray reflected by the scanning document placed on the front panel. In the invention, because the image sensor collects the light ray reflected by the whole scanning document placed on the front panel, the quick capturing for the image of the scanning document is realized. The invention also provides a scanner using the optical system.
Description
Technical field
The present invention relates to a kind of optical system and use the scanner of this optical system.
Background technology
Along with electronic equipment more and more uses, scanner has been indispensable interfacing equipment concerning general personal computer user or company.Scanner is a kind of device that extracts image, in order to scanned photograph, literal and figure etc., and is converted into the digital format that computing machine can show, edits, stores and export.
Yet, traditional scanner be adopt a linear light sorurce that moves with ray cast to delegation's image of file to be scanned, then after the light process effect of optical module that this row image is reflected back, be projected to again image sensor, in the process of the continuous movement of linear light sorurce, realize the acquisition to the image of whole file to be scanned.But, since traditional scanner be by to file line by line scan to finish to the acquisition of image, thereby so that sweep velocity is slower, when having a large amount of files to scan, just may waste a large amount of time.
Summary of the invention
In view of this, be necessary to provide a kind of scanner that can realize the optical system of rapid image acquisition and use this optical system.
A kind of optical system, it comprises a shell, a light source module, a catoptron, an image sensor; Described shell comprise a front panel that be used for to place scanning document, a rear panel relative with described front panel and be connected in front panel and rear panel between lower side panel, described light source module is arranged at the intersection of front panel and lower side panel, described catoptron one end is resisted against on the rear panel and toward described front panel, described image sensor is arranged at the intersection of rear panel and lower side panel; The ray cast that described light source module is launched is to catoptron, and through forming uniform area source on the plate in front after the mirror reflects, described image sensor collection is positioned over the light of the scanning document reflection on the front panel.
A kind of scanner, it comprises an optical system, an A/D processing module, an image processing module and a memory module; Described optical system comprises a shell, a light source module, a catoptron, an image sensor; Described shell comprise a front panel that be used for to place scanning document, a rear panel relative with described front panel and be connected in front panel and rear panel between lower side panel, described light source module is arranged at the intersection of front panel and lower side panel, described catoptron one end is resisted against on the rear panel and toward described front panel, described image sensor is arranged at the intersection of rear panel and lower side panel; The ray cast that described light source module is launched is to catoptron, and through forming uniform area source on the plate in front after the mirror reflects, described image sensor collection is positioned over the light of the scanning document reflection on the front panel; Described A/D processing module is used for the picture signal that image sensor captures is carried out mould/number conversion, and described image processing module is used for image is edited, and described memory module is used for the image after processing is stored.
Optical system provided by the invention and use the light that light source is launched in the scanner of this optical system and form area source at the front panel of placing scanning document, then use described image sensor to the light collection of view picture scanning document reflection, thereby realize the rapid scanning to scanning document.
Description of drawings
Fig. 1 is the schematic perspective view of the optical system that provides of embodiment of the present invention.
Fig. 2 is the cut-open view of the scanner of applied optics system among Fig. 1.
Fig. 3 is the light path synoptic diagram of optical system among Fig. 1.
The main element symbol description
| |
110 |
| Optical system | 100 |
| |
10 |
| The |
20 |
| Catoptron | 30 |
| |
40 |
| |
11 |
| Rear panel | 12 |
| Epipleural | 13 |
| |
14 |
| Left plate | 15 |
| Right plate | 16 |
| The |
111 |
| |
21 |
| |
22 |
| |
23 |
| Reflecting |
31 |
| The A/ |
50 |
| |
60 |
| |
70 |
Embodiment
Below with reference to the drawings, the present invention is described in further detail.
As shown in Figures 1 to 3, be a kind of optical system 100 that embodiment of the present invention provides, it is used for treating scanning document and scans; Described optical system 100 comprises a shell 10, a light source module 20, a catoptron 30, an image sensor 40.
Described shell 10 is trapezoidal cube for section, and it comprises a front panel 11, a rear panel 12, an epipleural 13, a lower side panel 14, a left plate 15 and a right plate 16.Described front panel 11 is parallel to each other with rear panel 12, and the area of rear panel 12 is less than front panel 13.Described epipleural 13, right plate 16 lower side panels 14 and left plate 15 are all trapezoidal, and are connected in successively between front panel 11 and the rear panel 12.Angle γ between described front panel 11 and the lower side panel 14 is about 49 degree, and has the effective coverage 111 of a printing opacity on the described front panel 11, and described file to be scanned is positioned in 111 scopes of effective coverage when scanning.Be pasted with the black light-absorbing sheet on described left plate 15 and the right plate 16, the light that is used for being projected on left plate 15 and the right plate 16 absorbs, and prevents because the light Multi reflection forms spurious rays, and the imaging of image sensor 40 is impacted.
Described light source module 20 comprises a light source 21 and a light guide plate 22, and described light guide plate 22 is fixedly arranged between front panel 11 and the lower side panel 14 and forms an enclosure space 23 by colloid is bonding.Described light source 21 is placed in the described enclosure space 23, can be by regulating the angle between described light guide plate 22 and the lower side panel 14, thus realization is to the adjusting of the angle of the light launched from light source 21; In the present embodiment, form an angle α toward front panel 11 between described light guide plate 22 and the lower side panel 14 and be about 66 degree, then the light from light guide plate 22 outgoing all is projected on the catoptron 30.In addition, in order to guarantee to throw along predetermined direction through the light of light guide plate 22, can near the both sides of front panel 11 and lower side panel 14 anti-dazzling screen be set respectively in light guide plate 22, with the angle of control emergent ray.In the present embodiment, described light source 21 is bar-type light emitting diode, and described light guide plate 22 is the bar shaped light guide plate.Be appreciated that described light source module 20 also can comprise the polylith optical prism, be used for regulating the light of launching from light source 21.
One side and the epipleural 13 of described catoptron 30 are fixedly connected, and relative opposite side and rear panel 12 are fixedly connected; Described catoptron 30 has a reflecting surface 31, and described reflecting surface 31 is toward front panel 11.In the present embodiment, form an angle β toward front panel 11 between described catoptron 30 and the lower side panel 14 and be about 94 degree, thereby guarantee through the uniform area source of effective coverage 111 interior formation on the plate 11 in front of the light after catoptron 30 reflections.
Described image sensor 40 is CCD (Charge Coupled Device, charge-coupled image sensor) or CMOS (Complementary Metal Oxide Semiconductor, CMOS (Complementary Metal Oxide Semiconductor)).Described image sensor 40 is arranged on the intersection of rear panel 12 and lower side panel 14 and is positioned at the below of described catoptron 30.Effective coverage 111 on the described front panel 11 is positioned within the angular field of view of image sensor 40.Described image sensor 40 gathers the light of the scanning document reflection that is positioned on the front panel 11, thereby realizes the quickly picking to the image of scanning document.
Embodiment of the present invention also provides a kind of scanner 110, and described scanner 110 comprises aforesaid optical system 100, an A/D processing module 50, an image processing module 60 and a memory module 70.Described A/D processing module 50 is used for the picture signal that image sensor 40 captures is carried out mould/number conversion, and described image processing module 60 is used for image is edited, and described memory module 70 is used for the image after processing is stored.
In use, first described file to be scanned is positioned in effective coverage 111 scopes of front panel 11.The light of launching from described light source 21 is adjusted to exit direction toward the light of catoptron 30 through light guide plate 22, through the reflection of 30 pairs of described light of catoptron, thereby forms uniform area source in the scope of the effective coverage 111 of plate 11 in front.Because the effect of the image on the file to be scanned, literal etc. forms diffuse reflection to being incident to file glazed thread to be scanned, thereby a part of ray cast is to the sensing region of image sensor 40.40 acquisitions of described image sensor are positioned at the image that the file to be scanned on the zone, position 111 is arranged, thereby realize treating the quickly picking of scanning document, Effective Raise the sweep velocity of file.After processing, the signal of video signal that gathers through described A/ D processing module 50 and 60 pairs of image sensor 40 of image processing module again is stored in the memory module 70.
Optical system provided by the invention and use the light that light source is launched in the scanner of this optical system and form area source at the front panel of placing scanning document, then use described image sensor to the light collection of view picture scanning document reflection, thereby realize the rapid scanning to scanning document.
Be understandable that, for the person of ordinary skill of the art, can make change and the distortion that other various pictures are answered by technical conceive according to the present invention, and all these change the protection domain that all should belong to claim of the present invention with distortion.
Claims (6)
1. optical system, it comprises a shell, a light source module, a catoptron, an image sensor; Described shell comprise a front panel that be used for to place scanning document, a rear panel relative with described front panel and be connected in front panel and rear panel between lower side panel, described light source module comprises a light source and a light guide plate, described light guide plate is fixedly arranged between front panel and the lower side panel and forms an enclosure space, described light source is placed in the described enclosure space, described catoptron one end is resisted against on the rear panel and toward described front panel, described image sensor is arranged at the intersection of rear panel and lower side panel; Angle between described front panel and the lower side panel is 49 degree, and the angle toward front panel between described light guide plate and the lower side panel is 66 degree, and the angle toward front panel between described catoptron and the lower side panel is 94 degree; The ray cast that described light source module is launched is to catoptron, and through forming uniform area source on the plate in front after the mirror reflects, described image sensor collection is positioned over the light of the scanning document reflection on the front panel.
2. optical system as claimed in claim 1, it is characterized in that: described shell is trapezoidal cube, and described shell also comprises a top panel relative with lower panel, and described catoptron one end is resisted against on the top panel.
3. optical system as claimed in claim 1, it is characterized in that: described light source is bar-type light emitting diode, and described light guide plate is the bar shaped light guide plate.
4. optical system as claimed in claim 1 is characterized in that: described light guide plate is used for regulating the angle from the light source emergent ray, makes from the light of light source outgoing and all is projected to catoptron.
5. optical system as claimed in claim 1, it is characterized in that: have an effective coverage on the described front panel, described effective coverage is positioned at the angular field of view of image sensor.
6. scanner, it comprises an optical system, an A/D processing module, an image processing module and a memory module; Described optical system comprises a shell, a light source module, a catoptron, an image sensor; Described shell comprise a front panel that be used for to place scanning document, a rear panel relative with described front panel and be connected in front panel and rear panel between lower side panel, described light source module comprises a light source and a light guide plate, described light guide plate is fixedly arranged between front panel and the lower side panel and forms an enclosure space, described light source is placed in the described enclosure space, described catoptron one end is resisted against on the rear panel and toward described front panel, described image sensor is arranged at the intersection of rear panel and lower side panel; Angle between described front panel and the lower side panel is 49 degree, and the angle toward front panel between described light guide plate and the lower side panel is 66 degree, and the angle toward front panel between described catoptron and the lower side panel is 94 degree; The ray cast that described light source module is launched is to catoptron, and through forming uniform area source on the plate in front after the mirror reflects, described image sensor collection is positioned over the light of the scanning document reflection on the front panel; Described A/D processing module is used for the picture signal that image sensor captures is carried out mould/number conversion, and described image processing module is used for image is edited, and described memory module is used for the image after processing is stored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910310653.9A CN102081217B (en) | 2009-11-30 | 2009-11-30 | Optical system and scanner using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910310653.9A CN102081217B (en) | 2009-11-30 | 2009-11-30 | Optical system and scanner using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102081217A CN102081217A (en) | 2011-06-01 |
| CN102081217B true CN102081217B (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910310653.9A Expired - Fee Related CN102081217B (en) | 2009-11-30 | 2009-11-30 | Optical system and scanner using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102081217B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1021031A2 (en) * | 1999-01-18 | 2000-07-19 | DF Informatica S.r.l. | Device for detecting images |
| CN1338701A (en) * | 2000-08-10 | 2002-03-06 | 力捷电脑股份有限公司 | Scanner with organic LEDs |
| US20020130979A1 (en) * | 2001-03-02 | 2002-09-19 | Takashi Kitaguchi | Projection-type display device and software program |
| CN201282504Y (en) * | 2008-11-12 | 2009-07-29 | 王震 | High speed scanner and duplicator employing surface type image sensor to take image |
-
2009
- 2009-11-30 CN CN200910310653.9A patent/CN102081217B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1021031A2 (en) * | 1999-01-18 | 2000-07-19 | DF Informatica S.r.l. | Device for detecting images |
| CN1338701A (en) * | 2000-08-10 | 2002-03-06 | 力捷电脑股份有限公司 | Scanner with organic LEDs |
| US20020130979A1 (en) * | 2001-03-02 | 2002-09-19 | Takashi Kitaguchi | Projection-type display device and software program |
| CN201282504Y (en) * | 2008-11-12 | 2009-07-29 | 王震 | High speed scanner and duplicator employing surface type image sensor to take image |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102081217A (en) | 2011-06-01 |
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