CN2760879Y

CN2760879Y - Book scanner capable of increasing fringe image quality

Info

Publication number: CN2760879Y
Application number: CN 200420059108
Authority: CN
Inventors: 盛少澜; 徐文良
Original assignee: Hongguang Precision Industry Suzhou Co Ltd
Current assignee: Hongguang Precision Industry Suzhou Co Ltd
Priority date: 2004-01-02
Filing date: 2004-04-30
Publication date: 2006-02-22
Anticipated expiration: 2014-04-30

Abstract

The utility model provides a book scanner capable of increasing fringe image quality, which solves the problem of scan matching with a book and the compensation of edge brightness. The utility model comprises a transparent platform, a shell body and a scanning module, wherein the shell body is provided with a shell body platform which is connected with a transparent platform and a first included angle less than 180 DEG is defined; the scanning module which is arranged in the shell body comprises a bending type light-emitting device, and the bending type light-emitting device is configured into a shape which is matched with the inclined shell body platform of the utility model. The fringe image quality of scanned file can be enhanced by providing efficient light source compensation.

Description

Can improve the book scanning instrument of edge images quality

Technical field

The utility model is the book scanning instrument that improves the edge images quality about a kind of, especially about a kind of book scanning instrument of utilizing the brightness at the edge that the folding type light-emitting device comes compensatory light.

Background technology

The employed fluorescent tube of conventional scanner, its Luminance Distribution is also inhomogeneous, and normally fluorescent tube is the highest also more even near middle part brightness, and the brightness on both sides is minimum.Therefore, utilize the fluorescent tube of this brightness irregularities to come scanning document, resulting scanning poor effect.In order to address this problem, the someone is developed the brightness of using the U-shaped fluorescent tube to compensate the edge of fluorescent tube.

Fig. 1 shows a kind of schematic diagram that uses the U-shaped fluorescent tube to compensate edge brightness.As shown in Figure 1, the fluorescent tube 110 of scanner is a U-shaped fluorescent tube, and it has a sweep 112, and this sweep 112 is near the edge that is positioned at corresponding to file 100, and is to be fixed on the scan module 140 by a fixture 120.Because the edge of file 100 has extra light source to compensate, and makes scanning quality be improved.

Fig. 2 shows the partial schematic diagram that Fig. 1 is applied to book scanning instrument.As shown in Figure 2, the housing 150 of book scanning instrument 130 has a housing platform 152 usually, so that carry books jointly with transparent platform 160.In addition, can be radiated on the books in order to keep certain lighting tube brightness, fluorescent tube 110 usually can not be too far away from transparent platform 160.Therefore, even U-shaped fluorescent tube 110 is pressed close to housing platform 152, also can't provide enough light sources near the bookbinding limit for books, this is because inclined casing platform 152 has limited the scope that U-shaped fluorescent tube 110 extends toward the left side of Fig. 2.In addition, the making of U-shaped fluorescent tube 110 is difficult for, thus with high costs, and the fixture 120 that U-shaped fluorescent tube 110 is fixed on scan module 140 cost an arm and a leg usually and fixed effect relatively poor, perhaps fixture 120 can cover a part of light and influence luminance compensation.

About the compensation technique of lighting tube brightness, can be referring to United States Patent (USP) the 5th, 475,505; 5,768,663; 5,950,053; And 6,133, No. 580 communiques, wherein the form of disclosed fluorescent tube has a variety ofly, all is to be used for compensating edge brightness.Yet these fluorescent tubes and configuration mode thereof can suffer from above-mentioned problem in the use exactly.

Therefore, how providing a kind of book scanning instrument that can cooperate books scanning and compensation edge brightness, is exactly inventor of the present utility model problem to be solved.

Summary of the invention

Therefore, a purpose of the present utility model provides a kind of book scanning instrument that improves the edge images quality, it is the shape that the folding type light-emitting device is configured to cooperate book scanning instrument inclined casing platform, by the compensation of efficient light source is provided, and then improve the edge images quality of institute's scanning document.

For reaching above-mentioned purpose, the utility model provides a kind of book scanning instrument that improves the edge images quality, be used for scanning books, these books one open have one first inner face under the state, one second inner face and connect a crest line of this first inner face and this second inner face.Book scanning instrument comprises a transparent platform, is used for carrying first inner face of described books; One housing has a housing platform of second inner face that is used for carrying books, and the housing platform is connected with transparent platform and defines one first angles less than 180 degree; And the one scan module, be arranged in the housing, move along the direction that is parallel to described crest line, be used for scanning first inner face of books.Scan module comprises a folding type light-emitting device, and this light-emitting device comprises one first section, is parallel to the transparent platform setting; And one second section, it has one first end and one second end, this first end is connected with first section, first section and one second angle of second section definition less than 180 degree, first end is than close one first plane of containing transparent platform of second end, to provide uniform light to improve the edge images quality.

The first above-mentioned angle preferably equals second angle, and first section of light-emitting device and second section preferably be fixed to scan module by one first fixture and one second fixture respectively, and slides at the inner face of housing platform and transparent platform.

Above-mentioned light-emitting device can be a kind of cold-cathode tube or be made up of several light-emitting diodes (LED) or several organic electric exciting light-emitting diodes (OLED).

Description of drawings

Fig. 1 shows a kind of schematic diagram that uses the U-shaped fluorescent tube to compensate edge brightness;

Fig. 2 shows the partial schematic diagram that Fig. 1 is applied to book scanning instrument;

Fig. 3 shows the partial schematic diagram according to the book scanning instrument of the utility model first embodiment;

Fig. 4 shows the partial schematic diagram according to the book scanning instrument of the utility model second embodiment;

Fig. 5 shows the partial schematic diagram according to the book scanning instrument of the utility model the 3rd embodiment;

Fig. 6 shows the partial schematic diagram according to the book scanning instrument of the utility model the 4th embodiment.

Embodiment

Below will preferred embodiment of the present utility model be described referring to accompanying drawing.Spirit of the present utility model is the folding type light-emitting device is configured to be obedient to the oblique structure of the housing platform of book scanning instrument, so as to efficient light-source brightness compensation is provided.

Fig. 3 shows the partial schematic diagram according to the book scanning instrument of the utility model first embodiment.As shown in Figure 3, the book scanning instrument 10 of present embodiment is to be used for scanning books 30.Books 30 open one to have one first inner face 32, one second inner face 34 and connects first inner face 32 and a crest line 36 of second inner face 34 under the state.Crest line 36 is the bookbinding limits corresponding to books 30, and the crest line in Fig. 3 36 is perpendicular to paper, and therefore the crest line of being seen 36 has only a bit.Book scanning instrument 10 comprises a transparent platform 12, a housing 14 and one scan module 20.Transparent platform 12 is first inner faces 32 that are used for carrying books 30.Housing 14 has a housing platform 15 of second inner face 34 that is used for carrying books 30, and housing platform 15 is connected with transparent platform 12 and defines one first included angle A 1 less than 180 degree.It should be noted that the housing platform 15 and the connected mode of transparent platform 12 are not limited to the structure that accompanying drawing is drawn out, so long as any joint construction that forms first included angle A 1 does not break away from scope of the present utility model.For example, housing platform 15 can be integrally formed structure with transparent platform 12.Therefore, housing platform 15 can have the structure that is shaped by the transparent material integral production with transparent platform 12.Scan module 20 is to move along a direction that is parallel to crest line 36, is used for scanning first inner face 32 of books 30.Usually, scan module 20 has a sleeve 44, and it cooperates so that scan module 20 can move around along guide rod 45 with a guide rod 45.Scan module 20 comprises a folding type light-emitting device 22, a speculum 41, lens 42, reaches an image sensor 43.Light-emitting device 22 emits beam to first inner face 32 of books 30, and the light that speculum 41 will reflect from first inner face 32 of books 30 reflexes to lens 42, then to image sensor 43.Image sensor 43 carries out subsequent conversion after receiving the light signal, to finish the program of image scan.

Light-emitting device 22 comprises one first section 23 and one second section 24.First section, 23 parallel transparent platforms 12, and second section 24 has one first end 25 and one second end 26 that is connected with first section 23.One of first section 23 and the definition of second section 24 less than one second included angle A 2 of 180 degree and one in fact perpendicular to one second plane 27 of transparent platform 12.First included angle A 1 can be to equal second included angle A 2, also can be slightly larger than or less than second included angle A 2.It should be noted that in another embodiment second plane 27 also can be not orthogonal to transparent platform 12.

First end, 25 to the second ends 26 provide uniform light to improve the edge images quality near transparent platform 12 so as to assisting first section 23.Specifically, the beeline D1 of first end 25 and transparent platform 12 is less than the beeline D2 of second end 26 with the extended surface of transparent platform 12.Therefore, first end, 25 to the second ends 26 of second section 24 are near one first plane 19 of containing transparent platform 12.

Book scanning instrument 10 can also comprise a reflector 16 and one first fixture 17.Reflector 16 can be a slice speculum or one deck reflection paster, it is positioned at an inner face 15A of housing platform 15 and in the face of second section 24 of light-emitting device 22, is used for the light that second section 24 with light-emitting device 22 sent to reflex near the crest line 36 of books 30.First fixture 17 is used for second section 24 of light-emitting device 22 is fixed on the scan module 20.First fixture 17 is to separate one section little gap with this inner face 15A, but also can be affixed on the inner face 15A slip of this housing platform 15, in the back explanation.Fig. 4 shows the partial schematic diagram according to the book scanning instrument of the utility model second embodiment.As shown in Figure 4, first fixture 17 of present embodiment is that an inner face 15A who is affixed on housing platform 15 slides.And the book scanning instrument of present embodiment also comprises one second fixture 18, and it is to be used for first section 23 of light-emitting device 22 is fixed on the scan module 20, and second fixture 18 is that an inner face 12A who is affixed on transparent platform 12 slides.By making first and second fixture 17 and 18 be close to the inner face 12A slip of the inner face 15A and the transparent platform 12 of housing platform 15 respectively, the light source that can fully use light-emitting device 22 to be provided, this also is to use folding type light-emitting device of the present utility model to cooperate the oblique structure of housing platform 15 just to have way to reach.The additional light source that second section 24 by folding type light-emitting device 22 is provided can solve the problem of edge brightness deficiency.In addition,, also light can be reflexed to, improve the edge images quality of scanning gained whereby near near the crest line 36 of books 30 by the reflection of the 16 pairs of light in reflector.In addition, thus since first and second fixture 17 with 18 and the standing part fixed of light-emitting device 22 all be that to be positioned at the linear section fixed form of light-emitting device 22 easy, and fixed cost is low, the problem that overcomes known technology fully and suffered from.

In the embodiment of Fig. 3 and 4, light-emitting device 22 is cold-cathode tubes.Yet light-emitting device 22 is other assembly that can emit beam also.

Fig. 5 shows the partial schematic diagram according to the book scanning instrument of the utility model the 3rd embodiment.As shown in Figure 5, the book scanning instrument of present embodiment is similar with second embodiment, and difference is that light-emitting device 22 comprises a circuit board 221, is positioned at several light-emitting diodes (LED) 222 on the circuit board 221, an and leaded light post 223.Leaded light post 223 is the tops that are positioned at these light-emitting diodes 222, is used for the light source homogenizing that these light-emitting diodes 222 are sent is come shot file so that uniform light to be provided.It should be noted that light-emitting diode 222 also can be a kind of organic electric exciting light-emitting diode (OLED).In addition, in the present embodiment, housing platform 15 is made of a substrate 151 and an adapter 152.Adapter 152 is to be connected to substrate 151 and transparent platform 12, with as substrate 151 and transparent platform 12 between the two be connected media.

Fig. 6 shows the partial schematic diagram according to the book scanning instrument of the utility model the 4th embodiment.As shown in Figure 6, present embodiment is to be similar to the 3rd embodiment, and difference is that the light-emitting device 22 of present embodiment comprises a circuit board 221, two light-emitting diodes (LED) 222 and leaded light posts 223.These light-emitting diodes 222 are the two ends that are positioned at leaded light post 223.The light source homogenizing that leaded light post 223 is sent these light-emitting diodes 222 is to provide uniform light.Two circuit boards 221 lay respectively at the two ends of leaded light post 223, and are separately installed with these two light-emitting diodes 222 on two circuit boards 221.It should be noted that also two circuit boards 221 to be merged becomes a circuit board, and these two light-emitting diodes 222 can be a kind of organic electric exciting light-emitting diode (OLED).

Therefore, by the folding type light-emitting device of above-mentioned structure of the present utility model, the brightness at the edge of light source can effectively be compensated, and makes that the edge images quality of scanning gained effectively is enhanced.In addition, the design of adding adapter can be so that the anabolic process of transparent platform and housing or design alteration have more elasticity.For example, the reflector 16 of Fig. 3 can be applied directly in Fig. 5 or 6 on the adapter 152, to simplify manufacturing process.

The specific embodiment that is proposed in the detailed description of preferred embodiment only is used for making things convenient for explanation technology contents of the present utility model, but not with the utility model narrow sense be limited in the foregoing description, under the situation that does not exceed spirit of the present utility model and claims scope, the many variations of being done is implemented, and all belongs to scope of the present utility model.

Symbol description

A1～first angle

A2～second angle

D1～beeline

D2～beeline

10～book scanning instrument

12～transparent platform

12A～inner face

14～housing

15～housing platform

151～substrate

152～adapter

15A～inner face

16～reflector

17～the first fixtures

18～the second fixtures

19～the first planes

20～scan module

22～light-emitting device

221～circuit board

222～light-emitting diode

223～leaded light post

23～the first sections

24～the second sections

25～the first ends

26～the second ends

27～the second planes

30～books

32～the first inner faces

34～the second inner faces

36～crest line

41～speculum

42～lens

43～image sensor

44～sleeve

45～guide rod

100～file

110～light-emitting device

112～sweep

120～fixture

130～book scanning instrument

140～scan module

150～housing

152～housing platform

160～transparent platform

Claims

1. book scanning instrument that can improve the edge images quality, be used for scanning books, described books one open have one first inner face under the state, one second inner face and connect a crest line of described first inner face and described second inner face, it is characterized in that described book scanning instrument comprises:

One transparent platform is used for carrying described first inner face of described books;

One housing has a housing platform of second inner face that is used for carrying described books, and described housing platform is connected with described transparent platform and defines one first angles less than 180 degree; And

The one scan module is arranged in the described housing, moves along the direction that is parallel to described crest line, is used for scanning described first inner face of described books, and described scan module comprises a folding type light-emitting device, and described light-emitting device comprises:

One first section is parallel to described transparent platform setting; And

One second section, it has one first end and one second end, described first end is connected with described first section, described first section and one second angle of described second section definition less than 180 degree, described first end is than close one first plane of containing described transparent platform of described second end, to provide uniform light to improve the edge images quality.

2. the book scanning instrument that improves the edge images quality as claimed in claim 1 is characterized in that, also comprises:

One reflector is positioned at an inner face of described housing platform and in the face of described second section of described light-emitting device, is used for the light that described second section with described light-emitting device sent to reflex near the described crest line of described books.

3. the book scanning instrument that improves the edge images quality as claimed in claim 1 is characterized in that, described first angle equals described second angle in fact.

4. the book scanning instrument that improves the edge images quality as claimed in claim 1 is characterized in that, also comprises:

One first fixture is used for described second section of described light-emitting device is fixed on the described scan module.

5. the book scanning instrument that improves the edge images quality as claimed in claim 4 is characterized in that, described first fixture is that an inner face that is affixed on described housing platform slides.

6. the book scanning instrument that improves the edge images quality as claimed in claim 4 is characterized in that, also comprises:

One second fixture is used for described first section of described light-emitting device is fixed on the described scan module.

7. the book scanning instrument that improves the edge images quality as claimed in claim 6 is characterized in that, described first fixture is that an inner face that is affixed on described housing platform slides, and described second fixture is the inner face slip that is affixed on described transparent platform.

8. the book scanning instrument that improves the edge images quality as claimed in claim 1 is characterized in that, described scan module also comprises:

One speculum, lens, an and image sensor, described speculum will reflex to described lens from the light of described books reflection, then to described image sensor.

9. the book scanning instrument that improves the edge images quality as claimed in claim 1 is characterized in that, one of described first section and described second section definition is in fact perpendicular to one second plane of described transparent platform.

10. the book scanning instrument that improves the edge images quality as claimed in claim 1 is characterized in that, described housing platform and described transparent platform are to have integrally formed structure.

11. the book scanning instrument that improves the edge images quality as claimed in claim 1 is characterized in that, described light-emitting device is a cold-cathode tube.

12. the book scanning instrument that improves the edge images quality as claimed in claim 1 is characterized in that, described light-emitting device comprises:

One circuit board;

Several light-emitting diodes (LED) are positioned on the described circuit board; And

One leaded light post is positioned at the top of described these light-emitting diodes, and the light source homogenizing that is used for described these light-emitting diodes are sent is to provide described uniform light.

13. the book scanning instrument that improves the edge images quality as claimed in claim 12 is characterized in that, described each light-emitting diode is organic electric exciting light-emitting diode (OLED).

14. the book scanning instrument that improves the edge images quality as claimed in claim 1 is characterized in that, described light-emitting device comprises:

Two light-emitting diodes (LED); And

One leaded light post, wherein said these light-emitting diodes are the two ends that are positioned at described leaded light post, described leaded light post with light source homogenizing that described these light-emitting diodes sent so that described uniform light to be provided.

15. the book scanning instrument that improves the edge images quality as claimed in claim 14 is characterized in that, described light-emitting device also comprises:

One circuit board is equipped with described these light-emitting diodes on it.

16. the book scanning instrument that improves the edge images quality as claimed in claim 14 is characterized in that, described light-emitting device also comprises:

Two circuit boards are separately installed with described these light-emitting diodes on it.

17. the book scanning instrument that improves the edge images quality as claimed in claim 14 is characterized in that, described each light-emitting diode is organic electric exciting light-emitting diode (OLED).

18. the book scanning instrument that improves the edge images quality as claimed in claim 1 is characterized in that, described housing platform comprises:

One substrate; And

One adapter connects described substrate and described transparent platform.