CN1321518C - Book scanning instrument with homogeneous light source structure - Google Patents
Book scanning instrument with homogeneous light source structure Download PDFInfo
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- CN1321518C CN1321518C CNB200410025086XA CN200410025086A CN1321518C CN 1321518 C CN1321518 C CN 1321518C CN B200410025086X A CNB200410025086X A CN B200410025086XA CN 200410025086 A CN200410025086 A CN 200410025086A CN 1321518 C CN1321518 C CN 1321518C
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- China
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- light source
- glass window
- transmittance section
- scanning
- book
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Abstract
The present invention relates to a book scanner which comprises a main body with a glass window, and an optical machine frame arranged in the main body, wherein the glass window is arranged on the main body and is provided with a break angle structure for placing files to be scanned. The optical machine frame is assembled in the main body where a strip-shaped lamp tube as a light source corresponding to the glass window is arranged. Particularly, the distance between the part where the light rays are strong of the light source, and the glass window is largest, while the distance between the part where the light rays are weak of the light source, and the glass window is small. Thus, the scanning beams from the light source irradiated on the object to be scanned can have stable and uniform brightness.
Description
Technical field
The present invention relates to scanner light-source structure and scanner glass window structure, wherein this scanner mainly is meant book scanning instrument, and this glass window has the angle structure, makes books can be flattened on this glass window surface for adjacent two pages under this book open mode with this.As for this light source then is a strip light source, and can move along formed crest line direction on the glass window of this knuckle structure, to provide these books of scanning needed light.
Background technology
The main composition of general scanner comprises a body, a glass window, a bare engine module and a light source.Wherein, this glass window is fitted in the top of this body, and this bare engine module is organized movably and is located in this body, then be that group is located on this bare engine module should glass window as for this light source, and this light can appear this glass window.Be placed on the scanning object on this glass window surface by the irradiate light that appears this glass window, can carry out image scan this scanning object.
Yet this light source is meant a kind of tubular light source of vertical bar structure.When the glass window of this light source and general closed planar structure is relative, parallel because this light source and this glass window form, so each bar scan line is impartial in the illumination that surperficial each position of this scanning object is produced in theory.But, and become even more near the luminous intensity of fluorescent tube mid portion more because the luminous intensity at the two ends of this tube-like tube can be less than the luminous intensity in fluorescent tube centre position.Fig. 6 is the pairing light intensity map of lamp strip position, the Strength Changes amount of lamp tube ends such as section A and section C is much larger than the centre portion B of fluorescent tube, even scanner itself has designed the compensate function of pair non-uniform source aggregate, its bare engine module can be made correction (desirable intensity correction curve as shown in Figure 6) to light source inhomogeneous with the image sensing signal pin.But to use the light source of whole fluorescent tube more, its actual intensity of light source just differs big more with the calibration light source intensity of desiring to try to achieve, even arrive greatly outside the effective range of the light source compensate function in the scanner, as shown in Figure 6, L is the actual light source maximum intensity, and L1 is the desirable correction intensity and the difference of actual light source maximum intensity.When L1/L 〉=1/3 even L1/L 〉=1/2, can't obtain corrected value exactly with the light source compensate function of current scanline instrument.So can be easy to generate unclear or incorrect situation to the scan-image that should the light source two ends be produced, be difficult to meet the demand that improves image quality.
Because of the more weak and unstable situation that influences scanning quality of this light source two ends luminous intensity, obviously see in the book scanning instrument especially.See also shown in Figure 1, this book scanning instrument 10 has the glass window 14 of knuckle structure at a body 12 superordinates one, and setting an optical base (carriage base) 15 in this body interior, this optical base 15 can move back and forth and be equipped with two groups of bare engine modules (scan module) 16.The glass window 14 of this knuckle structure comprises two transmittance sections 142,144, and books 18 open the back and can be flattened on 142,144 surfaces, transmittance section respectively for adjacent two pages.Can comprise speculum 162,163, lens 164, image sensing component (image sensor) 166 and light source 168 as for each bare engine module 16, and the corresponding respectively group of each bare engine module 16 is located at 142,144 belows, transmittance section, and the light source 168 that each bare engine module 16 is disposed forms parallel mutually with this transmittance section 142,144.
By shown in Figure 1, as seen the emitted light in light source 168 ends that disposed of each bare engine module 16 can be radiated at the binding side 182 of these books 18.In other words, in the utilization of book scanning instrument 10, be with the more weak and more unsettled part of the luminous intensity of this light source 168, binding side 182 and peripheral part thereof to these books 18 are carried out image scan, will be easy to generate unclear or incorrect situation so can predict the image information of scanning gained.
Summary of the invention
Because the book scanning instrument light source that above-mentioned prior art disclosed and the corresponding configuration of glass window, cause the image scan of bookbinding side and peripheral position thereof unclear or incorrect easily, so the invention provides the light source of an innovation and the configuration of glass window, particularly be used in the book scanning instrument of glass window with knuckle structure, make to have clear and correct effect by the image information that scans a books gained with this.
Thus, the object of the present invention is to provide a kind of book scanning instrument with uniform source of light structure, the body interior of this book scanning instrument sets an optical base that can move back and forth, one scanning object then is placed on the scanner and carries out image scan by the bare engine module that optical base set, and wherein this scanner comprises again:
One glass window, it is configured in the top of the body of scanner, in order to place scanning object;
One light source, it comprises a fluorescent tube that is essentially strip and is located at this optical base and corresponding glass window in order to group, and the light of light source can appear glass window irradiation scanning object;
Wherein, glass window more comprises one first transmittance section and one second transmittance section, and first transmittance section and second transmittance section form knuckle structure relatively and form a crest line in adjacent, strip light source vertically then vertical with described crest line direction.
The present invention sets one and has the glass window that knuckle is constructed on the body of a book scanning instrument, and on the bare engine module of this body interior institute assembly, set at least one bar shaped tubular light source, make gutter pos between adjacent two pages of corresponding books in this light source centre position, and the light source two ends can exceed the books edge.The strongest position and this books relative distance maximum of this light source intermediate light intensity like this, this light source has then less with this books relative distance than the part of low light intensity near end position, therefore each scan line of this light source these books to wait to retouch the light intensity that produces on the page or leaf comparatively even, make that the image of scanning gained is clear more and correct.
Below promptly again according to disclosed purpose, effect, and the structure configuration, a preferred embodiment lifted, and conjunction with figs. describes in detail.
Description of drawings
Fig. 1 is the structural representation of existing book scanning instrument;
Fig. 2 is a structural representation of the present invention;
Fig. 3 is a structural representation of the present invention;
Fig. 4 is another structural representation of the present invention;
Fig. 5 is another embodiment of the present invention;
Fig. 6 is lamp strip position respective light intensities figure before proofreading and correct;
Fig. 7 is for proofreading and correct back lamp strip position respective light intensities figure.
Embodiment
See also the shown book scanning instrument 20 of Fig. 2, this scanner 20 comprises a body 22, a glass window 24 and an optical base 26.Wherein the end face of this body 22 is offered an opening 28, and the peripheral portions of this opening 28 forms frame face 32.And this glass window is located at this opening 28 places for 24 groups, and this glass window 24 has knuckle structure, use open for books 50 after, can be flattened on this glass window 24 surfaces.And this optical base 26 is fitted in these body 22 inside to should glass window 24 and can move back and forth, and this optical base 26 also assembly has two groups of bare engine module (not shown)s and a light source 34.
See also Fig. 2, shown in Figure 3, this glass window 24 more comprises one first transmittance section 242 and one second transmittance section 244.This first transmittance section 242 and these second transmittance section, 244 adjacent and relative knuckle states that form, this first transmittance section 242 forms a crest line 25 with the joint of this second transmittance section 244 thus.And definition has an one scan district 246 (in the scope shown in dotted line, in fact this dotted line does not exist) on this first transmittance section 242, between the border of this scanning area 246 and these opening 28 inside edges from an intersegmental distance.In like manner, the 244 surface definition of this second transmittance section have another scanning area 248, and the border of this scanning area 248 and these opening 28 inside edges are from an intersegmental distance.
Above-mentioned this scanning area 246,248 refers to the scope of the corresponding books page, and for example this scanning area size is the A4 specification, and then the page just can open and corresponding being placed in the zone of this scanning area 246,248 less than the books 50 of A4.In this design, first transmittance section 242 and second transmittance section 244 of this glass window 24 are larger than the A4 size.If in the time of will carrying out the scanning of book contents of the bigger page, the user can select the scanner of big specification for use, so that the page of these books can be corresponding in the scanning area of glass window institute standard, this is the state that uses scanner at present.
This optical base 26 sets the light source 34 of a strip fluorescent tube, and this light source 34 is vertically vertical with this crest line 25.More specifically, the direction of motion of this light source 34 is parallel with the extending direction of this crest line 25, and this light source 34 is vertically vertical with the direction of motion of this light source 34.Make thus this light source 34 in the middle of the crest line 25 of corresponding this glass window 24 partly, and the two ends of this light source 34 can exceed the border of this scanning area 246,248.See also shown in Figure 4ly again, the two ends of this light source 34 also can be corresponding below the formed frame face 32 of these body 22 end faces.
Please consult Fig. 2, shown in Figure 3 again, during use, these books 50 open, this binding side 52 is leaned against on the crest line 25 of glass window 24 of this knuckle structure, so the adjacent page of these books 50 just can be flattened on this first transmittance section 242 and these 244 surfaces, second transmittance section, and this adjacent page is positioned at the scope of scanning area 246,248.
When these light source 34 luminous scannings, as seen from Figure 2 the distance of the corresponding crest line 25 in this light source 34 centre positions greater than these light source 34 other positions to distance that should glass window 24.In other words, the position of these light source 34 light intensity maximums apart from books 50 farthest, and the more weak position of these light source 34 light intensities is apart from the close together of books 50, like this under the condition that illumination and square distance are inversely proportional to, this light source 34 be radiated at scan line that these books 50 are produced each partly brightness can be comparatively even, and can not form in the middle of this scan line obviously bright in the situation at two ends.Fig. 7 is for being arranged on the strip fluorescent tube among Fig. 2 in the book scanning instrument light intensity map corresponding to light source position, because the position corresponding relation of above-mentioned books and light source, so the desirable correction intensity of Fig. 7 and the difference of actual light source maximum intensity, can be controlled at effectively maximum actual strength 1/3 to 1/2 between, within the effective range of the compensate function of just in scanner, establishing.
Therefore design concept of the present invention is to abandon light source and transmittance section design parallel to each other in the previous book scanning instrument, and be provided in the glass window 24 times of knuckle structure with single strip light source, and make this light source 34 the strongest position of light from scanning object farthest, and the more weak part of this light source 34 is nearest from this scanning object, therefore makes the light intensity of the scan line that is radiated at this scanning object surface reach effect of uniform.In addition, more can get rid of outside scanning area 246,248 at the position that these light source 34 two ends light intensities are least stable and the most weak, so more can improve the stability and the uniformity of the illumination of this scan line.
Fig. 5 is another embodiment with regard to design concept of the present invention, respectively install a light reflection subassembly 36 at these light source 34 two ends, in order to improve light intensity, can increase this light source 34 spendable parts like this, and the length longitudinally of this light source 34 can surpass this scanning area 246,248.Hence one can see that, and the existing technology that increases the intensity of light source at strip light source two ends as at the zone coating high reflectance material near the light source two ends, or is done bending or the like with the light source two ends and all be can be applicable among the present invention.More than be preferred embodiment of the present invention and design, this preferred embodiment and design only illustrate, it is not the interest field that is used to limit the technology of the present invention, all technological means or the enforcement in the interest field that the claim content is contained with equivalence all do not break away from category of the present invention and are applicant's interest field.
The drawing reference numeral explanation
10 book scanning instrument, 12 bodies
14 glass windows 142,144 transmittance sections
15 optical base, 16 bare engine modules
162,163 speculums, 164 lens
166 image sensing components, 168 light sources
20 book scanning instrument, 22 bodies
24 glass windows, 242 first transmittance sections
244 second transmittance sections, 246,248 scanning areas
25 crest lines, 26 optical base
28 openings, 32 frame faces
34 light sources, 50 books
52 binding sides
Claims (6)
1, a kind of book scanning instrument with uniform source of light structure, the body interior that it is characterized in that described book scanning instrument sets an optical base that can move back and forth, one scanning object then is placed on the described scanner and carries out image scan by the bare engine module that described optical base set, and wherein said scanner comprises again:
One glass window, it is configured in the top of the body of described scanner, in order to place described scanning object;
One light source, it comprises a fluorescent tube that is essentially strip and is located at described optical base and corresponding described glass window in order to group, and the light of this light source can appear described glass window and shines described scanning object;
Wherein, described glass window more comprises one first transmittance section and one second transmittance section, and described first transmittance section and second transmittance section form knuckle structure relatively and form a crest line in adjacent, described strip light source vertically then vertical with described crest line direction.
2, book scanning instrument as claimed in claim 1, it is characterized in that described first transmittance section and surface, second transmittance section have all defined the one scan district, and described scanning object is placed in the zone of described scanning area, and described light source two ends then exceed the border of the scanning area of described first transmittance section and second transmittance section.
3, book scanning instrument as claimed in claim 2, the body that it is characterized in that described scanner is offered an opening in order to the described glass window of assembly, and the opening inside edge of scanning area border on described first transmittance section and second transmittance section and described body is at a distance of an intersegmental distance, and makes described light source two ends corresponding to the zone between this scanning area border and the described opening inside edge.
4, book scanning instrument as claimed in claim 1 is characterized in that the body of described scanner is offered an opening in order to the described glass window of assembly, and the periphery of described opening formation frame face, and described light source two ends are then corresponding below the frame face of described open circumferential.
5. book scanning instrument as claimed in claim 1 is characterized in that comprising at least one light reflection subassembly, is arranged at described light source two ends and reflexes to described glass window in order to the light with described light source two ends.
6. book scanning instrument as claimed in claim 1 is characterized in that each more comprises a kink at described light source two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410025086XA CN1321518C (en) | 2004-06-10 | 2004-06-10 | Book scanning instrument with homogeneous light source structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410025086XA CN1321518C (en) | 2004-06-10 | 2004-06-10 | Book scanning instrument with homogeneous light source structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1708089A CN1708089A (en) | 2005-12-14 |
| CN1321518C true CN1321518C (en) | 2007-06-13 |
Family
ID=35581722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410025086XA Expired - Fee Related CN1321518C (en) | 2004-06-10 | 2004-06-10 | Book scanning instrument with homogeneous light source structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1321518C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834971B (en) * | 2009-03-13 | 2014-03-19 | 虹光精密工业（苏州）有限公司 | Binding file scanning device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09116699A (en) * | 1995-10-20 | 1997-05-02 | Fuji Photo Optical Co Ltd | Image input device |
| US5636006A (en) * | 1996-04-17 | 1997-06-03 | Xerox Corporation | Apparatus and method for scanning a bound document using a wedge shaped platen with a moving mirror |
| JP2000242137A (en) * | 1999-02-23 | 2000-09-08 | Ishii Iron Works Co Ltd | Copying machine for bound book |
-
2004
- 2004-06-10 CN CNB200410025086XA patent/CN1321518C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09116699A (en) * | 1995-10-20 | 1997-05-02 | Fuji Photo Optical Co Ltd | Image input device |
| US5636006A (en) * | 1996-04-17 | 1997-06-03 | Xerox Corporation | Apparatus and method for scanning a bound document using a wedge shaped platen with a moving mirror |
| JP2000242137A (en) * | 1999-02-23 | 2000-09-08 | Ishii Iron Works Co Ltd | Copying machine for bound book |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1708089A (en) | 2005-12-14 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070613 Termination date: 20210610 |
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| CF01 | Termination of patent right due to non-payment of annual fee |