CN1735123A - Contact type image scanner with multi-focus and multi resolution ratio - Google Patents
Contact type image scanner with multi-focus and multi resolution ratio Download PDFInfo
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- CN1735123A CN1735123A CN 200410056649 CN200410056649A CN1735123A CN 1735123 A CN1735123 A CN 1735123A CN 200410056649 CN200410056649 CN 200410056649 CN 200410056649 A CN200410056649 A CN 200410056649A CN 1735123 A CN1735123 A CN 1735123A
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Abstract
This invention provides a contact image scanner with multi focus and resolution, which comprises: a circuit board, at least two set of photosensitive element arrays composed of first and second set photosensitive element arrays arranged on circuit board of single row, at least one set of cylinder lens of first and second lens opposite separately to the said photosensitive element arrays and upper suspended, and a first glass suspended upper the cylinder lens. The combination of circuit board, photosensitive element arrays and cylinder lens matches with the position regulation, variety, thickness, and vertical distance, to form more than two focus and resolution for scanning to image with different focus.
Description
Technical field
The present invention relates to a kind of contact image scanner, relate in particular to a kind of contact image scanner that can be applicable to have the object to be scanned of different scanning image focal length with many focal lengths and multiresolution.
Background technology
Contact image sensor (contact image sensor, CIS) operation principle of module is that irradiate light that light source is produced is to contribution to be scanned, reflection through lens set, reassociate in charge coupled cell (charge-coupled device, CCD) or CMOS (Complementary Metal Oxide Semiconductor) (complementary metal oxide semiconductor, CMOS) after receiving by it on, the photo-sensitive cell that utilizes this type is the signal transition of the light signal for electricity, and then produces analog or digital pixel (pixel) data.In the process of scanning, because CCD can detect the light that zones of different on the image reflects varying strength, therefore utilize the principle of the more light of the less light of regional reflex darker on the paper, brighter regional reflex, the light wave that CCD reflected can be converted to the analog or digital data, this signal of telecommunication can be directly proportional with light intensity, at last, the literal or the image scan software that re-use with the CIS compatibility read in these data, and it is reassembled as the computer image file.
Because ripe photocontrol technology is dependent in excellent CIS capture performance, and is therefore not only important by the quality of image that optical module obtained, still influence one of main reason of CIS running performance.
At present the view finding method of the optical image of main flow is and aforementionedly is called as contact image sensor (it is with modular kenel for contact image sensor, technology CIS), and light source, lens pillar, sensing substrate and shell etc. are combined.
Please refer to Fig. 1 (a), it is a structure chart of using the scan module of contact image sensor technology in the known technology.Wherein, scan module 10 is by light source 11, lens pillar (Rod lens) 12, distant element (spacer) 13, glass (cover glass) 14 and 15 common be combined intos of circuit board; And also has a photo-sensitive cell 16 that constitutes by CCD or CMOS on the circuit board 15.
Utilizing scan module 10 to carry out in the process of sweep object, with glass 14 is datum level, keeping lens pillar 12 to the focal length of sweep object by distant element 13 is a fixed range, the image that produced after the object reflection of the light that light source 11 is sent by lens pillar 12 focuses on the photo-sensitive cell 16 again, with the signal of acquisition image.Because general object to be scanned 17 is smooth with glass 14 usually, so the focal length that is very easy to be maintained fixed, and makes quality of scanning good, shown in Fig. 1 (b).
When object to be scanned is lantern slide, egative film etc., shown in Fig. 1 (c), because it not is to be flattened on the glass 14 that the housing that object to be scanned 18 is had causes the face of being scanned, but and when having a segment distance between the glass 14, this moment traditional scanning device and can't be suitable for two kinds of diverse locations simultaneously be scanned object (smooth glass 14 and be positioned at the top of glass 14), and cause the modulation transfer function (MTF of image acquisition quality easily, Modulation Transfer Function) bad, so its quality of scanning is always, and This is what people generally disapprove of.
Solve above-mentioned because of having the problem that object to be scanned caused of different scanning image focal length, but comparatively general technology is to use the distant element 13 of change in elevation at present, that is to say, change the position of distant element 13 by lifting technology, and then adjust required different relative focal length among Fig. 1 (b) and Fig. 1 (c), make that the surface of lens pillar 12 all can be identical to the different distances that is scanned object 17 (smooth glass) or 18 (above glass).Yet because distant element 13 generally is formed by combining with plastics ball, steel ball, slide rail, it has factors such as tolerance, distortion, wearing and tearing and be easy to make that the height of lifting becomes difficult on Control of Precision in the process of using; In addition, if must use undersized object to be scanned, for example: lantern slide, egative film etc., and during scanning that need high-resolution, also can't use general scanner, have more high-resolution contact image scanner and must be replaced with, this is not only quite inconvenient, does not also meet economic principle.
In order to eliminate this problem, the Japan Patent spy opens the 2004-126284 communique and has proposed a kind of contact image scanner with bi-focal and dual resolution design, as Fig. 2 (a) and (b).
Different with aforementioned many technology is, it utilizes two to arrange the light-sensing element array (array) 26 and 27 that is parallel on the circuit board 25, the lens pillar 22 and 23 of the corresponding tool different focal of difference, adapt to object to be scanned 28 and 29 with different scanning image focal length, with eliminate its bad problem of the imaging that caused, see also Fig. 2 (a) and (b) schematic diagram.
From the surface, as if the Japan Patent spy open the 2004-126284 communique and solved all problems that prior art faced, actually not so, operator for the image-forming principle of being familiar with contact image scanner and manufacturing technology, the technology of this Japan Patent not only scope of application is narrow and small, and has made the problem in more uses.
At first, fixing light- sensing element array 26 and 27 of arranging with parallel mode, the relative position and the arrangement mode of the lens pillar corresponding 22 and 23 have been limited with it, make that the volume of this contact image scanner is restricted linksystem, in order to satisfy the trend of device microminiaturization, certainly will will limit the number of employed lens pillar, this also is the reason that this patent is only applicable to two groups of lens pillars.
Secondly, owing to have only two groups of lens pillars and light-sensing element array, so this patent just is subjected to suitable limitation on the applicable scope of object to be scanned, and also, adaptable object to be scanned 28 and 29 different scanning image focal range are extensive inadequately.
Moreover, light-sensing element array 26 and 27, lens pillar 22 and 23 and the relative position of circuit board 25 be all fixing, though got up to increase a different scanning focal length and a resolution compared with the prior art, in fact its scanning focal length and resolution still do not have adjustable sex change, can not effect a permanent cure so still can only take stopgap measures.
Summary of the invention
Of the present invention mainly being contemplated that proposes a kind of contact image scanner with many focal lengths and multiresolution, and it can be applicable to have the object to be scanned of different scanning image focal length.
Specifically, the invention provides a kind of contact image scanner, comprising: a circuit board with many focal lengths and multiresolution; At least two group light-sensing element array are made of one first group and one second group of light-sensing element array, and these two groups of light-sensing element array form single arrangement to each other and are positioned on this circuit board; At least one group of lens pillar is made of one first and one second lens pillar, this first and this second lens pillar respectively to should first group and this second group of light-sensing element array and be suspended at this two groups of light-sensing element array tops; And one first glass, be suspended at this group lens pillar top.Wherein, utilize these two groups of light-sensing element array and formed at least two kinds of focal lengths of this group lens pillar and resolution, at placing this first different object to be scanned on glass to scan.
According to the contact image scanner of above-mentioned conception, be to use contact image sensor (contactimage sensor, CIS) technology.
Contact image scanner according to above-mentioned conception also has a shell, in order to encapsulate this circuit board, these two groups of light-sensing element array, this group lens pillar, to reach this first glass.
Contact image scanner according to above-mentioned conception, wherein this first group and this second group of light-sensing element array are made of a plurality of first photo-sensitive cells and a plurality of second photo-sensitive cell respectively, and the thickness of this first photo-sensitive cell and this second photo-sensitive cell can be identical or different.
According to the contact image scanner of above-mentioned conception, wherein the thickness of this first photo-sensitive cell and this second photo-sensitive cell according to this first glass to the thickness of the vertical range of these two groups of light-sensing element array and this first glass and freely select.
According to the contact image scanner of above-mentioned conception, wherein this first and the focal length of this second lens pillar can be identical or different.
According to the contact image scanner of above-mentioned conception, wherein this first and the focal length of this second lens pillar according to the thickness of this first photo-sensitive cell and this second photo-sensitive cell, this first glass to the thickness of the vertical range of these two groups of light-sensing element array and this first glass and freely select.
According to the contact image scanner of above-mentioned conception, wherein also has one second glass between this first lens pillar and this first group of light-sensing element array.
According to the contact image scanner of above-mentioned conception, wherein also has a distant element between this first group of light-sensing element array and this circuit board.
The present invention also provides a kind of contact image scanner with many focal lengths and multiresolution, comprising: an at least one first circuit board and a second circuit board; At least two group light-sensing element array, by one first group and one second group of light-sensing element array lay respectively at this first and this second circuit board constituted, these two groups of light-sensing element array form single arrangement to each other; At least one group of lens pillar is made of one first and one second lens pillar, this first and this second lens pillar respectively to should first group and this second group of light-sensing element array and be suspended at this two groups of light-sensing element array tops; And a glass, be suspended at this group lens pillar top.Wherein, utilize the adjustment of relative position between this first circuit board and this second circuit board, make these two groups of light-sensing element array and this group lens pillar form at least two kinds of focal lengths and resolution, at placing this different object to be scanned on glass to scan.
According to the contact image scanner of above-mentioned conception, wherein be connected with connector (connecter) between this first circuit board and this second circuit board.
The present invention also provides a kind of contact image scanner with many focal lengths and multiresolution, comprising: an at least one first circuit board and a second circuit board; At least two group light-sensing element array, by one first group and one second group of light-sensing element array lay respectively at this first and this second circuit board constituted, these two groups of light-sensing element array form to each other and are arranged in parallel; At least one group of lens pillar is made of one first and one second lens pillar, this first and this second lens pillar respectively to should first group and this second group of light-sensing element array and be suspended at this two groups of light-sensing element array tops; And a glass, be suspended at this group lens pillar top.Wherein, utilize the adjustment of relative position between this first circuit board and this second circuit board, make these two groups of light-sensing element array and this group lens pillar form at least two kinds of focal lengths and resolution, at placing this different object to be scanned on glass to scan.
The present invention also provides a kind of contact image scanner with many focal lengths and multiresolution, comprising: a circuit board; At least two group light-sensing element array are made of one first group and one second group of light-sensing element array, and these two groups of light-sensing element array form to each other and are arranged in parallel and are positioned on this circuit board; At least one group of lens pillar is made of one first and one second lens pillar, this first and this second lens pillar respectively to should first group and this second group of light-sensing element array and be suspended at this two groups of light-sensing element array tops; One first glass is suspended at this group lens pillar top; And one second glass, be suspended between this first lens pillar and this first group of light-sensing element array.Wherein, utilize these two groups of light-sensing element array, this group lens pillar, with formed at least two kinds of focal lengths of this second glass and resolution, at placing this different object to be scanned on glass to scan.
According to the contact image scanner of above-mentioned conception, wherein this second glass can be replaced by the transparent resin of ranges of indices of refraction between 1.3～1.7.
The present invention makes up two or more sets lens pillars of different qualities, two or more sets photo-sensitive cells and the circuit board more than or two in a contact-type image module, become one group of optical element, can be applicable to two or multi-functional image scan, use with the object scan that satisfies different resolution or the object that is scanned of other differing heights characteristic.
The present invention makes up two or more sets lens pillars of different qualities, two or more sets photo-sensitive cells and the circuit board more than or two in a contact-type image module, become one group of optical element, and the distant element of collocation system end and glass, have the object to be scanned of different scanning image focal length with scanning, make this contact image scanner can have a machine double-purpose of many focal lengths and multiresolution or the function of using more.
The present invention utilizes when being scanned the face position not select or to adjust the demand that different lens pillars, sensing element thickness, distant element thickness, thickness of glass wait the scanning plane that meets differing heights simultaneously.
The present invention can be placed on photo-sensitive cell a slice in the design of circuit board or put on the circuit board of different sheets (two or multi-disc), to reach two or multi-functional scan capability, and when photo-sensitive cell is placed on the circuit board of different sheets, can adjust the position of circuit board, to reach required optical demands with respect to differing heights.
The present invention is directed to each specific demand (as the height or the resolution difference of object to be scanned), have the fixed structure that suitable photo-sensitive cell matches with lens pillar, and can switch according to the demand of using, therefore each specific face that is scanned and focal position can be quite accurate, and the quality of scanning of gained also can obtain good quality.
The present invention obtains more deep understanding by following accompanying drawing and detailed description.
Description of drawings
Fig. 1 (a) is a structure chart of using the scan module of contact image sensor technology in the known technology;
Fig. 1 (b) and Fig. 1 (c) are the schematic diagrames that contact image scanner scanning has the object to be scanned of different scanning image focal length in the known technology;
Fig. 2 (a) and (b) be that the Japan Patent spy opens the schematic diagram that contact image scanner scanning that the 2004-126284 communique discloses has the object to be scanned of different scanning image focal length;
Fig. 3 (a)～(c) is the structure chart of the embodiment of the contact image scanner of the present invention with many focal lengths and multiresolution;
Fig. 4 is the first group of light-sensing element array of Fig. 3 and second group of light-sensing element array forms single arrangement on circuit board schematic diagram;
Fig. 5 is the structure chart of second embodiment of the contact image scanner of the present invention with many focal lengths and multiresolution;
Fig. 6 is that first group of light-sensing element array and second group of light-sensing element array of the 3rd embodiment of the contact image scanner of the present invention with many focal lengths and multiresolution forms the schematic diagram that is arranged in parallel on circuit board; And
Fig. 7 is the structure chart of the 4th embodiment of the contact image scanner of the present invention with many focal lengths and multiresolution.
Wherein:
10: scan module
11,21: light source
12,22,23: lens pillar
13: distant element
14,24,34,341,54,74,741: glass
342: distant element
15,25,35,75: circuit board
16: photo-sensitive cell
17,18,28,29,38,39,58,59,78,79: object to be scanned
26,27: light-sensing element array
30,50,70: contact image scanner
32,52,72: the first lens pillars
33,53,73: the second lens pillars
36,56,76: the first groups of light-sensing element array
37,57,77: the second groups of light-sensing element array
51,51 ': connector
55: first circuit board
55 ': second circuit board
Embodiment
(first embodiment)
See also Fig. 3 (a), the structure chart of its first embodiment of the contact image scanner of many focal lengths and multiresolution for the present invention has.Wherein, (contact imagesensor, CIS) contact image scanner 30 of technology is made of in a shell (not shown) first lens pillar 32, second lens pillar 33, glass 34, circuit board 35, first group of light-sensing element array 36 and second group of light-sensing element array 37 mutual encapsulation to use contact image sensor.
Among contact image scanner 30, the corresponding respectively first group of light-sensing element array 36 of first lens pillar 32 and second lens pillar 33 and second group of light-sensing element array 37 and be suspended at this two groups of light-sensing element array top, glass 34 is suspended at this group lens pillar top, and first group of light-sensing element array 36 and second group of light-sensing element array 37 form single arrangement to each other and be positioned on the circuit board 35; As shown in Figure 4, the second group of light-sensing element array 37 that is made of a plurality of second photo-sensitive cells can be positioned at the front end or the tail end of the first group of light-sensing element array 36 that is made of a plurality of first photo-sensitive cells, as long as two group patterns form single arrangement.
Scan function for the contact image scanner that reaches bi-focal and dual resolution design, the thickness of first photo-sensitive cell and second photo-sensitive cell can optionally be chosen to be identical or different, its standard according to glass 34 to the focal length of the thickness of the vertical range of these two groups of light-sensing element array and glass 34 and lens pillar and freely select; Similarly, the focal length of first lens pillar 32 and second lens pillar 33 also can be identical or different, its standard then according to the thickness of first photo-sensitive cell and second photo-sensitive cell, glass 34 to the thickness of the vertical range of these two groups of light-sensing element array and glass 34 and freely select.
In Fig. 3 (a), with the combination of first lens pillar 32 and first group of light-sensing element array 36 in order to scan general object to be scanned 38, as stationery (paper type), and by the combination of second lens pillar 33 and second group of light-sensing element array 37 in order to scan special object to be scanned 39, as lantern slide (film type) and high-resolution object to be scanned etc.
Also promptly, present embodiment utilizes these two groups of light-sensing element array and formed at least two kinds of focal lengths of this group lens pillar and resolution, at placing these different objects to be scanned on glass to scan; In addition, though present embodiment is bifunctional design, this design still can be extended to multi-functional mechanism, and the combination that only needs to increase light-sensing element array and lens pillar gets final product.
In addition, in the structure of Fig. 3 (a), also can or between second lens pillar 33 and second group of light-sensing element array 37 another glass 341 be set between first lens pillar 32 and first group of light-sensing element array 36, by the thickness of suitably selecting glass 341, to reach the realization of many focal lengths and multiresolution; Shown in Fig. 3 (b).
Same reason, another kind method then is between first group of light-sensing element array 36 and the circuit board 35 or between second group of light-sensing element array 37 and the circuit board 35 distant element 342 to be set, by thickness or the height of suitably selecting or adjust distant element 342, to reach the realization of many focal lengths and multiresolution; Shown in Fig. 3 (c).
Compare with aforementioned prior art, present embodiment is combined to form two or more focal lengths and resolution with many groups light-sensing element array and a plurality of lens pillars, makes contact image scanner to scan at the object to be scanned with different scanning image focal length; In addition, first group of light-sensing element array 36 and second group of single to each other arrangement of light-sensing element array 37 not only can adapt to the demand of various different designs, also can save the size of contact image scanner integral body, reach microminiaturized target.
(second embodiment)
See also Fig. 5, the structure chart of its second embodiment of the contact image scanner of many focal lengths and multiresolution for the present invention has.Be with the only difference of aforementioned first embodiment, first group of light-sensing element array 56 of this embodiment lays respectively on different first circuit board 55 and the second circuit board 55 ' with second group of light-sensing element array 57, and is connected with connector (connecter) 51 and 51 ' between first circuit board 55 and the second circuit board 55 '.
Identical with first embodiment, the second group of light-sensing element array 57 that is made of a plurality of second photo-sensitive cells can be positioned at the front end or the tail end of the first group of light-sensing element array 56 that is made of a plurality of first photo-sensitive cells, as long as two group patterns form single arrangement, as shown in Figure 4.
The focal length that more aforementioned first embodiment of present embodiment has more and the governing factor of resolution are, the thickness of first photo-sensitive cell described in first embodiment and second photo-sensitive cell, glass 54 to the vertical range of these two groups of light-sensing element array and the thickness of glass 54 etc. become because of the basis on, increased first circuit board 55 and second circuit board 55 ' each other the adjustment of relative position become because of, make that the control of many focal lengths of contact image scanner 50 and multiresolution can more responsive (sensitive).
Similar with Fig. 3, present embodiment with the combination of first lens pillar 52 and first group of light-sensing element array 56 in order to scan general object to be scanned 58, as stationery (paper type), and by the combination of second lens pillar 53 and second group of light-sensing element array 57 in order to scan special object to be scanned 59, as lantern slide (film type) and high-resolution object to be scanned etc.
Similarly, present embodiment still can be extended to multi-functional mechanism, and the combination that only needs to increase circuit board, light-sensing element array and lens pillar gets final product.
Compare with aforesaid prior art, present embodiment in the combination of the light-sensing element array of many groups and a plurality of lens pillars between a plurality of circuit boards of increase the change of the adjustment of relative position because of, with the contact image scanner that formation has more kinds of focal lengths and resolution, it can be scanned at object to be scanned with different scanning image focal length.
(the 3rd embodiment)
It is similar to second embodiment that the present invention has the structure of the 3rd embodiment of contact image scanner of many focal lengths and multiresolution, but only difference is, though first group of light-sensing element array 56 of this embodiment lays respectively on the different circuit boards with second group of light-sensing element array 57, the second group of light-sensing element array 57 that constitutes by a plurality of second photo-sensitive cells and arrange in mode parallel to each other by first group of light-sensing element array 56 that a plurality of first photo-sensitive cells constitute; As shown in Figure 6, the length of second group of light-sensing element array 57 is except can making according to the demand that is scanned object, its position with respect to X-axis also can define according to designer's hobby, as figure can be in the position 1, position 2, position 3 or arbitrary position in the middle of it, its position with respect to Y-axis also can and adjust according to the convenience of producing.
Compare with aforesaid prior art, present embodiment is except being combined to form the two or more focal length and resolution with many groups light-sensing element array and a plurality of lens pillars, in the arrangement of light-sensing element array group, also increase and change the space, cooperate the adjustment of relative position between a plurality of circuit boards, make contact image scanner have more matching and selectivity with respect to multiple object to be scanned with different scanning image focal length.
(the 4th embodiment)
See also Fig. 7, the structure chart of its 4th embodiment of the contact image scanner of many focal lengths and multiresolution for the present invention has.Though similar to the situation of using another glass 341 among first embodiment, first group of light-sensing element array 76 of this embodiment is positioned on the identical circuit board 75 with second group of light-sensing element array 77, and be arranged in parallel in the mode of Fig. 6 to each other.
Compare with aforementioned prior art, the factor of the thickness of present embodiment is many glass 741, in the selection of many focal lengths and multiresolution, have more variability, make the running performance of contact image scanner more flexible with respect to multiple object to be scanned with different scanning image focal length.
In sum, the present invention is by a plurality of circuit boards, the light-sensing element array of many groups and the combination of a plurality of lens pillars, the variation of relative position between the light-sensing element array that cooperates the adjustment of relative position between the circuit board and organize more, and the thickness of selected photo-sensitive cell, glass form two or more focal lengths and resolution to the vertical range of this light-sensing element array and the length and the thickness of glass diversifiedly.
Because the mode of the adjustment distant element height of being mentioned in prior art design, its tolerance of adjusting the height of distant element surpasses+/-0.1mm above (the ball tolerance approximately+/-0.025mm, slide rail tolerance pact+/-0.05mm, steel ball tolerance pact+/-0.025m, problems such as distortion, wearing and tearing are still arranged in addition), therefore will seriously influence the value of modulation transfer function, comparatively speaking, the invention has the advantages that to produce extra tolerance issues, resulting quality of scanning is better.
The invention enables contact image scanner to scan at having the object to be scanned that difference scans the image focal length, it not only can adapt to the demand of various different designs, also can save the size of contact image scanner integral body, reach the target of the required microminiaturization in market, its range of application is except scanner, also be applicable to the multi-function printer that is popular for the market now (multifuntion printer, MFP).
The present invention can make remodeling and variation by those skilled in the art, but does not break away from the protection range of claims.
Claims (14)
1. contact image scanner with many focal lengths and multiresolution comprises:
One circuit board;
At least two group light-sensing element array are made of one first group and one second group of light-sensing element array, and described two groups of light-sensing element array form single arrangement to each other and are positioned on this circuit board;
At least one group of lens pillar is made of one first and one second lens pillar, this first and this second lens pillar respectively to should first group and this second group of light-sensing element array and be suspended at described two groups of light-sensing element array top; And
One first glass is suspended at this group lens pillar top;
Wherein, utilize described two groups of light-sensing element array and formed at least two kinds of focal lengths of this group lens pillar and resolution, at placing this first different object to be scanned on glass to scan.
2. contact image scanner as claimed in claim 1 wherein is to use the contact image sensor technology.
3. contact image scanner as claimed in claim 1 wherein also has a shell, in order to encapsulate this circuit board, described two groups of light-sensing element array, this group lens pillar and this first glass.
4. contact image scanner as claimed in claim 1, wherein this first group and this second group of light-sensing element array are made of a plurality of first photo-sensitive cells and a plurality of second photo-sensitive cell respectively, and the thickness of this first photo-sensitive cell and this second photo-sensitive cell can be identical or different.
5. contact image scanner as claimed in claim 1, wherein the thickness of this first photo-sensitive cell and this second photo-sensitive cell is freely selected to the thickness of the vertical range of described two groups of light-sensing element array and this first glass according to this first glass.
6. contact image scanner as claimed in claim 1, wherein this first and the focal length of this second lens pillar can be identical or different.
7. as 1 described contact image scanner, wherein this first and the focal length of this second lens pillar freely select to the thickness of the vertical range of described two groups of light-sensing element array and this first glass according to the thickness of this first photo-sensitive cell and this second photo-sensitive cell, this first glass.
8. contact image scanner as claimed in claim 1 wherein also has one second glass between this first lens pillar and this first group of light-sensing element array.
9. contact image scanner as claimed in claim 1 wherein also has a distant element between this first group of light-sensing element array and this circuit board.
10. contact image scanner with many focal lengths and multiresolution comprises:
An at least one first circuit board and a second circuit board;
At least two group light-sensing element array, by one first group and one second group of light-sensing element array lay respectively at this first and this second circuit board constituted, described two groups of light-sensing element array form single arrangement to each other;
At least one group of lens pillar is made of one first and one second lens pillar, this first and this second lens pillar respectively to should first group and this second group of light-sensing element array and be suspended at described two groups of light-sensing element array top; And
One glass is suspended at this group lens pillar top;
Wherein, utilize the adjustment of relative position between this first circuit board and this second circuit board, make described two groups of light-sensing element array and this group lens pillar form at least two kinds of focal lengths and resolution, at placing this different object to be scanned on glass to scan.
11., wherein be connected with connector between this first circuit board and this second circuit board as the contact image scanner of claim 10.
12. the contact image scanner with many focal lengths and multiresolution comprises:
An at least one first circuit board and a second circuit board;
At least two group light-sensing element array, by one first group and one second group of light-sensing element array lay respectively at this first and this second circuit board constituted, described two groups of light-sensing element array form to each other and are arranged in parallel;
At least one group of lens pillar is made of one first and one second lens pillar, this first and this second lens pillar respectively to should first group and this second group of light-sensing element array and be suspended at described two groups of light-sensing element array top; And
One glass is suspended at this group lens pillar top;
Wherein, utilize the adjustment of relative position between this first circuit board and this second circuit board, make described two groups of light-sensing element array and this group lens pillar form at least two kinds of focal lengths and resolution, at placing this different object to be scanned on glass to scan.
13. the contact image scanner with many focal lengths and multiresolution comprises:
One circuit board;
At least two group light-sensing element array are made of one first group and one second group of light-sensing element array, and described two groups of light-sensing element array form to each other and are arranged in parallel and are positioned on this circuit board;
At least one group of lens pillar is made of one first and one second lens pillar, this first and this second lens pillar respectively to should first group and this second group of light-sensing element array and be suspended at described two groups of light-sensing element array top;
One first glass is suspended at this group lens pillar top; And
One second glass is suspended between this first lens pillar and this first group of light-sensing element array;
Wherein, utilize described two groups of light-sensing element array, this group lens pillar, with formed at least two kinds of focal lengths of this second glass and resolution, at placing this different object to be scanned on glass to scan.
14. contact image scanner as claimed in claim 13, wherein this second glass can be replaced by the transparent resin of ranges of indices of refraction between 1.3～1.7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100566491A CN100361491C (en) | 2004-08-13 | 2004-08-13 | Contact type image scanner with multi-focus and multi resolution ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100566491A CN100361491C (en) | 2004-08-13 | 2004-08-13 | Contact type image scanner with multi-focus and multi resolution ratio |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100914101A Division CN100461816C (en) | 2004-08-13 | 2004-08-13 | Contact image scanner with multi focallength and multi resolution |
| CNB2007100914116A Division CN100461817C (en) | 2004-08-13 | 2004-08-13 | Contact image scanner with multi focal length and multi resolution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1735123A true CN1735123A (en) | 2006-02-15 |
| CN100361491C CN100361491C (en) | 2008-01-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100566491A Active CN100361491C (en) | 2004-08-13 | 2004-08-13 | Contact type image scanner with multi-focus and multi resolution ratio |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102281378A (en) * | 2010-06-10 | 2011-12-14 | 菱光科技股份有限公司 | Multi-lens image sensing module |
| CN101783854B (en) * | 2009-01-21 | 2013-01-16 | 威海华菱光电有限公司 | Image reading device |
| CN106341573A (en) * | 2015-07-10 | 2017-01-18 | 富士施乐株式会社 | Image reading apparatus and image reading method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004015827A (en) * | 1996-08-02 | 2004-01-15 | Canon Inc | Image reading apparatus and image reading system |
| US6538243B1 (en) * | 2000-01-04 | 2003-03-25 | Hewlett-Packard Company | Contact image sensor with light guide having least reflectivity near a light source |
| JP2004126284A (en) * | 2002-10-03 | 2004-04-22 | Canon Inc | Image read unit and image reader |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783854B (en) * | 2009-01-21 | 2013-01-16 | 威海华菱光电有限公司 | Image reading device |
| CN102281378A (en) * | 2010-06-10 | 2011-12-14 | 菱光科技股份有限公司 | Multi-lens image sensing module |
| CN106341573A (en) * | 2015-07-10 | 2017-01-18 | 富士施乐株式会社 | Image reading apparatus and image reading method |
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| CN100361491C (en) | 2008-01-09 |
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