CN2241358Y - Platform-type optic image reading device - Google Patents
Platform-type optic image reading device Download PDFInfo
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- CN2241358Y CN2241358Y CN 95227847 CN95227847U CN2241358Y CN 2241358 Y CN2241358 Y CN 2241358Y CN 95227847 CN95227847 CN 95227847 CN 95227847 U CN95227847 U CN 95227847U CN 2241358 Y CN2241358 Y CN 2241358Y
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Abstract
The utility model relates to a platform-type optic image reading device, comprising a first moving component, a second moving component, a reflecting mirror group, and a drive device. In the utility model, the first moving component is provide with a light source and a reflecting lens; the second moving component is provided with a lens and an image reading element which move at the same speed in an opposite direction corresponding to the first moving component; the reflecting mirror group can transfer the images of read articles, which are reflected by the first moving component, to the lens of the second moving component so that focusing imaging is carried out on the image reading element; the drive device which is provided with drive belts or steel ropes is used for driving the first moving component and the second moving component to generate the movements.
Description
The utility model relates to a kind of platform-type optical imagery reading device.
Shown in Figure 1 is the general organigram that reads the platform-type optical imagery reading device that reflects original text commonly used.Wherein mainly comprise: a pressing plate 1 and a transparent supporting plate 2 can cooperate the contribution 3 that portion is read to be fixed on the top plan of this projection arrangement; Scan components 4 can bear that the driven unit (not shown) drives and moves and this is read contribution 3 scans along a parallel plane direction with this transparent supporting plate 2.In scan components 4, include a light source 6, can be with ray cast at the reading face that is read contribution 3, several catoptrons 7, be used to change this light source 6 and be radiated at the light transfer route that is reflected after the contribution 3, make it through camera lens 8 and optically focused is imaged on the image read element 9, the processing after the image that makes this reflection original text 3 is imported machine and is provided with in the electronic signal mode.
Shown in Figure 2 is a kind of platform-type optical imagery reading device that reads transparent original text commonly used, this transparent manuscript base is to utilize another transparent pressing plate 1a and above-mentioned transparent supporting plate 2 to cooperatively interact as reading device, be fixed on the plane of scanning motion and will be read contribution 3, this transparent pressing plate 1a top is provided with a light source 6a and light source drive device (not shown).After the light of this light source 6a directly passes contribution 3, be delivered to camera lens 8 by catoptron 7 again, optically focused is imaged on this image read element 9 again.
In above-mentioned Fig. 1, the platform-type image read-out shown in Figure 2, light source 6, catoptron 7, camera lens 8 and image read and are combined into an integral body, so the volume of this scan components 4 is very huge, and this scan components 4 is when work, must move along being read the direction that contribution 3 is parallel to each other, so, must reserve sizable space in the device and move for this scan components 4.
Shown in Figure 3 is a kind of structure of platform-type optical imagery reading device, this device is fixed on camera lens 8 and image read element 9 on the body, be provided with first moving assembly 10 in addition: be equiped with above-mentioned light source 6 and a catoptron 11 on this moving assembly 10, and second moving assembly 12: be equiped with several catoptrons 13.This first and second moving assembly 10,12 can be subjected to the guiding of a guiding part 14 and move along a direction parallel with being read contribution.
The image transfer path of the contribution 3 of this device is: this light source 6 is radiated at the light (then being the light by contribution 3 if any transparent original text mode) that reflects on reflection original text 3 surfaces, after catoptron 11 reflections, be delivered to second moving assembly 12 forward with the direction parallel with contribution, and then the catoptron 13 on second moving assembly 12, reflex to this camera lens 8 and image read element 9 in the opposite direction.
First moving assembly 10 and second moving assembly 12 are erected on the guiding part 14 jointly, and driven by same driver part (not shown).But for the image of keeping contribution 3 is remained unchanged by the focal length that this catoptron 11 is delivered to camera lens 8, the translational speed of second moving assembly 12 must accurately remain first moving assembly 10 translational speed 1/2nd so that the image of contribution remains unchanged through the distance that some catoptrons 13 are delivered to the bang path of camera lens 8 from catoptron 11.
The advantage of this platform-type optical imagery reading device is that the volume of its scan components can dwindle significantly, and the space that first, second moving assembly 10,12 of confession of reserving in the body moves also can dwindle, and therefore its overall volume is significantly dwindled.But because of the translational speed difference of its first, second moving assembly 10,12, and the accurately control of the ratio of its translational speed, thereby make the structure of its drive unit very complicated.
The purpose of this utility model provides a kind of saving space, effective reduced volume, and drive structure is simple, the platform-type optical imagery reading device that cost reduces.
The utility model is achieved in that and includes light source, reflector group, camera lens, two moving assemblies, two guiding devices and drive unit, wherein first, second guiding device is installed in device inside, the former is for providing the straight line path of navigation parallel with being read contribution, and the latter is then for providing the path of navigation parallel with being read contribution; It is characterized in that: above-mentioned first moving assembly is installed on first guiding device, and is subjected to this guide means guide and moves along the direction linear reciprocation parallel with being read contribution; Second moving assembly then is installed on second guiding device, is subjected to this second guide means guide and moves along the direction parallel with being read contribution; Above-mentioned light source is arranged on device inside, provides the scanning contribution required light, and it can move with first moving assembly is synchronously parallel, is used to provide scanning to be read the required light of contribution; A reflecting optics is installed on first moving assembly, and this eyeglass can will be read the image of contribution towards the direction reflection parallel with the moving direction of first moving assembly; A camera lens and an image read element are housed on second moving assembly; Also be fixed with a reflector group in device inside, it can make it be passed to above-mentioned camera lens with the direction opposite with the first moving assembly direct of travel image transfer path changing of above-mentioned reflecting optics reflection and optically focused is imaged on the image read element; A drive unit is used to drive first and second moving assembly along first and second guidance device constant speed movement in the opposite direction.
Characteristics of the present utility model are in its optical scanning mechanism, light source and reflecting optics are installed in one along being read on first moving assembly that the parallel direction straight line of contribution moves, with camera lens and image read-out be arranged on first moving assembly to be parallel to each other but on second moving assembly that the mode that direction is opposite, speed equates moves, the reflecting optics group then is packed in image reading mechanism inside.This device greatly reduces the volume of image reading mechanism by the said elements mounting means, and because of the speed of its first and second moving assembly equates, equipment mechanism is greatly simplified, and control easily.
Fig. 1 is the platform-type optical imagery reading device of a reflection original text structural representation commonly used at present.
Fig. 2 is the platform-type optical imagery reading device of a transparent original text structural representation commonly used at present.
Fig. 3 is another kind of platform-type optical imagery reading device structural representation commonly used.
Fig. 4 is the transverse sectional view of first embodiment of the present utility model.
Fig. 5 is the longitudinal sectional view of being got along the A-A line of Fig. 4.
Fig. 6 is the longitudinal sectional view of being got along the B-B line of Fig. 4.
Fig. 7 is the horizontal cross of being got along the C-C line of Fig. 4.
Fig. 8 is that the utility model uses first kind of structural map at the platform-type optical imagery reading device of transparent original text.
Fig. 9 is that the utility model uses second kind of structural map at the platform-type optical imagery reading device of transparent original text.
Figure 10 is the transverse sectional view of second embodiment of the present utility model.
Figure 11 is the longitudinal sectional view of being got along the D-D line of Figure 10.
Figure 12 is the horizontal cross of being got along the E-E line of Figure 10.
Consult Fig. 4-first embodiment of the present utility model shown in Figure 7.
Structure of the present utility model can be widely used in the optical scanner of platform-type reflection original text and transparent original text, and platform image fetch devices such as photoprinter for convenience of description, below are example with the scanner only, illustrates that structure of the present utility model forms.
Referring to Fig. 4, Fig. 5, the utility model includes: a transparent supporting plate 2 and a pressing plate 1 are used for bearing and are read contribution 3; One first moving assembly 20, it is provided with a light source 21, is used to provide scanning to be read the required light of contribution 3; A reflecting optics 22 is used for change and is read contribution 3 image transfer paths, and its moving direction towards above-mentioned first moving assembly 20 is advanced; One first guidance device 30, it can provide along being read the parallel path of navigation of contribution 3, to guide first moving assembly 20, it is moved along contribution 3 parallel direction linear reciprocation; And one second moving assembly 40, it is arranged on second guidance device 50, and the path linear reciprocation displacement that can be parallel to each other along the mobile route with first moving assembly 20.
Of particular note: light source 21 is to combine with first moving assembly 20 in the foregoing description, but under other situation (when for example reading transparent original text), 21 of this light sources separate with first moving assembly 20, and drive by another drive unit, and move in synchronous and parallel mode with first moving assembly 20.
As shown in Figure 6, second moving assembly 40 is provided with a camera lens 41, an image read element 42, and one group of fixing reflecting optics group 60, be used for the image reflection that is read contribution 3 that the reflecting optics 22 with first moving assembly 20 reflects and be passed to this camera lens 41, by camera lens 41 its optically focused is imaged on this image read element 42 again.
A drive unit 70, can drive first and second moving assembly 20,40 along first and second guidance device 30,50 in the opposite direction the constant speed straight line move.As Fig. 4, Fig. 5 and shown in Figure 7, in this drive unit 70, comprise: a driving belt 71 in the form of a ring, have two sections parallel portion parallel with the moving direction of first and second moving assembly 20,40 711,712, these two sections parallel portion 711,712 and first and second moving assembly 20,40 link together.A driving rolls 72, be linked in the inner ring surface of driving belt 71, the inner ring surface of driving belt 71 has tooth bar, the outer ring surface of driving rolls 72 then have can with the intermeshing profile of tooth of the tooth bar of driving belt 71, so driving rolls 72 transmission driving belt 71 accurately.One ellipse takes turns 73, is arranged on the other end of image read-out with respect to driving rolls 72, for winding driving belt 71.A drive motor 74 is in order to drive this driving rolls 72.And a support body 75, in order to set up drive unit 70.
Drive motor 74 can directly drive driving rolls 72 and rotate, or drive driving rolls 72 indirectly via gear set, when driving rolls 72 rotates, then can drive driving belt 71 revolutions, thereby make first and second moving assembly 20,40 that is connected revolution belt 71 both sides also be driven and move along above-mentioned first and second guiding part 30,50.As shown in Figure 7, during the driving belt revolution, the gait of march of the parallel portion 711,712 of its dual-side is identical, and direction is opposite, so first and second moving assembly 30,50 can be moved with phase uniform velocity and reverse direction.
When carrying out image scanning, first moving meter of scanning mechanism is to move towards the other end of contribution 3 along first guidance device 30 from an end that is read contribution 3.When first moving assembly 20 moved, the image of this contribution 3 can be put back and be penetrated eyeglass 22 reflections, and transmits towards the first moving assembly moving direction.
The image of reflecting optics 22 reflection is again via the reflection of reflecting optics group 60, change its direct of travel once more, and advance towards the direction opposite with first moving assembly, 20 moving directions and be delivered to the camera lens 41 of second moving assembly 40, focal imaging is on image read element 42 then.And second moving assembly 40 this moment also with first moving assembly 20 mutually the uniform velocity reverse direction move.
First and second moving assembly 20,40 of the present utility model moves in this way, and the distance that can make the reflecting optics 22 on first moving assembly 20 arrive the camera lens 41 on this second moving assembly 40 is maintained fixed, thereby the image focal length of contribution 3 remains unchanged.
As Fig. 8 and shown in Figure 9, be applied to the embodiment of two kinds of structures of the platform-type optical image reading device of transparent original text for the utility model.Among this embodiment, having increased by one provides the light source that reads the required light of transparent original text.Referring to Fig. 8, this light source 23 can separate with first moving assembly 20, and by another group drive unit (not shown) to drive with the synchronous mode of first moving assembly 20.In the embodiment shown in fig. 9, the light source 25 and first moving assembly 20 link together, and are driven by this first moving assembly 20, and it also has one in order to place the transparent original text holding device 80 of transparent original text.Light source 25 has one in order to provide first fluorescent tube 251 that reads the required light of transparent original text and one in order to read second fluorescent tube 252 of reflection original text.Has a slide block 26 on first moving assembly 20 simultaneously, can be above the slide block 26 for above-mentioned reflecting optics is installed, can drive by a hard to bear screw rod 27 simultaneously, and make reflecting optics 22 can cooperate the irradiate light position of first and second light source and adjust its position, thereby reach the effect of the image that reads transparent original text or reflection original text.
In addition, the utility model drive unit 70 also can change and be other structure, extremely shown in Figure 12 as Figure 10, its employed drive unit comprises a cable wire 76 and some rollers 77 in order to this cable wire 75 of winding, and 78, one drive motor 79 and two frame plates 80 that are used to set up roller 77 that drive driving rolls 78 of driving rolls that drive this cable wire 76.
Another difference of this embodiment is its first and second moving assembly the 20, the 40th, is used in these two frame plates 80 and guides its travel path, thereby save above-mentioned first and second guidance device 30,50.As Figure 10, Figure 11 and shown in Figure 12, these two frame plates 80 have the horizontal component 81 that a moving direction with first and second moving assembly 20,40 is parallel to each other separately, and the both sides of first moving assembly 20 have a linking part 82 respectively, these two are connected part 82 and can be connected mutually with the lateral border of the horizontal component 81 of these two frame plates 80, make first moving assembly 20 can be subjected to horizontal component 81 guidings of this two frame plate 80 and move along the direction that is parallel to each other with contribution 3.
In addition, the both sides of second moving assembly 40 have one equally respectively and are connected part 83, and these two linking parts 83 are connected mutually with the medial margin of horizontal component 81, and make second moving assembly 40 be subjected to frame plate 80 guidings.
As shown in figure 12, cable wire 76 is wound on after some rollers 77, have two sections parallel portion parallel 761,762 with the moving direction of first and second moving assembly 20,40, and first moving assembly 20 and second moving assembly 40 link one of them of two sections parallel portion 761,762 of cable wire respectively, first and second moving assembly can be driven and with constant speed but the path movement that the opposite mode of direction is set along guidance device.
Claims (8)
1, a kind of platform-type optical imagery reading device, include light source, reflector group, camera lens, two moving assemblies, two guiding devices and drive unit, wherein first, second guiding device is installed in device inside, the former is for providing the straight line path of navigation parallel with being read contribution, and the latter is shown the path of navigation that provides parallel with being read contribution; It is characterized in that: above-mentioned first moving assembly is installed on first guiding device, and is subjected to this guide means guide and moves along the direction linear reciprocation parallel with being read contribution; Second moving assembly then is installed on second guiding device, is subjected to this second guide means guide and moves along the direction parallel with being read contribution; Above-mentioned light source is arranged on device inside, provides the scanning contribution required light, and it can move with first moving assembly is synchronously parallel, is used to provide scanning to be read the required light of contribution; A reflecting optics is installed on first moving assembly, and this eyeglass can will be read the image of contribution towards the direction reflection parallel with the moving direction of first moving assembly; A camera lens and an image read element are housed on second moving assembly; Also be fixed with a reflector group in device inside, it can make it be passed to above-mentioned camera lens with the direction opposite with the first moving assembly direct of travel image transfer path changing of above-mentioned reflecting optics reflection and optically focused is imaged on the image read element; A drive unit is used to drive first and second moving assembly along first and second guidance device constant speed movement in the opposite direction.
2, platform-type optical imagery reading device as claimed in claim 1, it is characterized in that: wherein this drive unit comprises:
A driving belt is arranged in the image read-out, has two sections parallel portion parallel with the moving direction of first and second moving assembly; And this first and second moving assembly is together fixedly connected with these two sections parallel portion respectively; One can drive the rotating driving rolls of driving belt, at least more than one take turns for being set around the ellipse of driving belt; And motor that driving rolls rotates.
3, platform-type according to claim 1 optical imagery reading device is characterized in that, wherein drive motor can directly drive the driving rolls revolution or via after the gear set speed change, drive the driving rolls revolution indirectly.
4, platform-type optical imagery reading device as claimed in claim 1, it is characterized in that: wherein this drive unit comprises:
A cable wire is arranged in the image read-out; It is parallel to have at least two sections moving directions with first and second moving assembly, and parallel with the moving direction of first and second moving assembly respectively, and respectively with first and second moving assembly secure bond parallel portion together; The roller of several winding cable wires; One drives the rotating driving rolls of cable wire; A driving rolls motor rotating.
The translational velocity of above-mentioned two parallel portion is equal and moving direction is opposite, and therefore driving above-mentioned first and second moving assembly produces the opposite constant speed movement of aforementioned direction.
5, platform-type optical imagery reading device as claimed in claim 4 is characterized in that: wherein drive motor can directly drive this driving rolls revolution or via after the gear set speed change, drive this driving rolls revolution indirectly.
5, platform-type optical imagery reading device as claimed in claim 1 is characterized in that: wherein light source be with the first moving assembly secure bond together.
7, platform-type optical imagery reading device as claimed in claim 1 is characterized in that: wherein light source is to separate with first moving assembly, and driven by another drive unit and produce above-mentioned synchronous with this first moving assembly, and moving of being parallel to each other.
8, platform-type optical imagery reading device as claimed in claim 1, it is characterized in that: first and second guiding device can jointly be merged into an assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95227847 CN2241358Y (en) | 1995-12-12 | 1995-12-12 | Platform-type optic image reading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95227847 CN2241358Y (en) | 1995-12-12 | 1995-12-12 | Platform-type optic image reading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2241358Y true CN2241358Y (en) | 1996-11-27 |
Family
ID=33873586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95227847 Expired - Fee Related CN2241358Y (en) | 1995-12-12 | 1995-12-12 | Platform-type optic image reading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2241358Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100369451C (en) * | 2004-06-11 | 2008-02-13 | 佳能株式会社 | Surface illumination unit and transparent original reading apparatus |
| US7852525B2 (en) | 2004-06-11 | 2010-12-14 | Canon Kabushiki Kaisha | Surface illumination unit and transparent original reading apparatus |
| CN106056568A (en) * | 2015-12-08 | 2016-10-26 | 湖南酷开机电有限公司 | Key data interpretation method |
-
1995
- 1995-12-12 CN CN 95227847 patent/CN2241358Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100369451C (en) * | 2004-06-11 | 2008-02-13 | 佳能株式会社 | Surface illumination unit and transparent original reading apparatus |
| US7852525B2 (en) | 2004-06-11 | 2010-12-14 | Canon Kabushiki Kaisha | Surface illumination unit and transparent original reading apparatus |
| CN106056568A (en) * | 2015-12-08 | 2016-10-26 | 湖南酷开机电有限公司 | Key data interpretation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |