CN101193183B - Scanner and its optical module - Google Patents

Abstract

The invention relates to a scanning device which comprises a shell, an upper shell board and a window transparent film. An optical component is arranged inside the shell to capture images and the shell is also provided with a first opening. The upper shell board is arranged on the shell and is provided with a second opening which corresponds to the first opening. A window transparent film is disposed on the first opening and is corresponding to the second opening. In which, the window transparent film is embedded into the second opening through the assembly of the shell and the upper shell board.

Description

Scanning means and optical module thereof

Technical field

The invention relates to a kind of scanning means and optical module thereof, and particularly relevant for a kind of scanning means and optical module thereof with dust reduction capability.

Background technology

Present common on the market scanning means also comprises digital copier and has the multifunctional paper feeding machine of scan function except common scanner.If do differentiation with regard to the mode that file to be scanned is supplied with, platform-type (flatbed) scanning means that file to be scanned was inactive state when scanning means can be divided into scanning during with scanning file to be scanned be paper feed type (sheet-fed) scanning means of mobile status.No matter be the former or latter's scanning means, for obtaining the image of file to be scanned, the resulting signal of video signal of scanning means all must penetrate the overscanning window, yet if scanning window is stained with and is bonded to dust, the resulting image of scanning means will be affected.With the paper feeding scanner is example, please refer to Figure 1A～1B, and Figure 1A represents is the part schematic diagram of traditional paper feeding scanner, and what Figure 1B represented is the exploded view of the scanner of Figure 1A.Shown in Figure 1A～1B, paper feeding scanner 1 comprises housing 10, optical module 11, goes up coverboard 12, window glass 13 and paper feed mechanism 14.Paper feed mechanism 14 is installed on the coverboard 12, and window glass 13 also is arranged at coverboard 12, and 11 of optical modules are fixed in the housing 10 and corresponding window glass 13.Paper feed mechanism 14 is in order to drive the window glass 13 of file to be scanned by last coverboard 12, with the image on these optical module 11 fechtables file to be scanned.

Shown in Figure 1B, when last coverboard 12 is installed in housing 10, exist owing to still have the slit between last coverboard 12 and the housing 10, extraneous dust can enter housing 10 inside by the slit.When if dust attaches to window glass 13, be very easy to have influence on institute's picked image.Referring again to Fig. 1 C～1D, what Fig. 1 C represented is the schematic diagram of scanner when scanning document of Figure 1A, and what Fig. 1 D represented is the schematic diagram of the scanner institute pick-up image of Fig. 1 C.If dust granule is attached on window glass 13 upper surfaces, the user can remove it easily; But if shown in Fig. 1 C, (for example P1～P2) is attached on window glass 13 lower surfaces to dust granule, and be positioned at just on the scan line S (scanline) that optical module 11 scanned, when file A to be scanned when direction D moves through window glass 13, dust granule P1～P2 can cause several unnecessary band line L1～L2 to the image after optical module 11 acquisitions, shown in Fig. 1 D.

For the practice of clean window glass 13 lower surfaces, the action of cleaning again after normally earlier scanner being disassembled, suitable inconvenience for the user.If but the unclean dust granule that is attached to the scanning window lower surface, when scanning the optical module dust granule that again can misidentification be attached to scanning window be the part of file to be scanned, the direct quality of image that obtains of influence scanning.

Summary of the invention

In view of this, purpose of the present invention just provides a kind of scanning means and optical module thereof, by the slit between window glass and optical module being reduced to minimum, or directly window glass is arranged on the housing that is equiped with optical module, is attached on window glass to prevent dust.In addition, can add shield assembly again around window glass, to reduce the possibility that window glass contacts with extraneous dust.

According to purpose of the present invention, a kind of scanning means is proposed, it comprises housing, goes up coverboard and window slide.Enclosure interior is provided with optical module, and housing also has first opening.Last coverboard is arranged on the housing, and has second opening corresponding to first opening.The window slide is installed on first opening, and corresponding to the second opening setting.Wherein, the window slide embeds second opening via the assembling of housing and last coverboard.

According to purpose of the present invention, reintroduce a kind of scanning means, it comprises housing, goes up coverboard, window glass sheet and shield assembly.Enclosure interior is provided with optical module, and housing also has first opening.Last coverboard is arranged on the housing, and has second opening corresponding to first opening.The window slide is installed on second opening.Shield assembly and is positioned at around the window slide between housing and last coverboard.

According to purpose of the present invention, a kind of optical module is also proposed, comprise housing, reflector group, lens, optical sensing subassembly and window slide.Reflector group, lens, optical sensing subassembly are arranged at enclosure interior, and the window slide then is connected with housing.

For above-mentioned purpose of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and cooperation institute accompanying drawing are described in detail below:

Description of drawings

Figure 1A represents is the part schematic diagram of traditional paper feeding scanner.

What Figure 1B represented is the exploded view of the scanner of Figure 1A.

What Fig. 1 C represented is the schematic diagram of scanner when scanning document of Figure 1A.

What Fig. 1 D represented is the schematic diagram of the scanner institute pick-up image of Fig. 1 C.

Fig. 2 A represents is exploded view according to the scanning means of preferred embodiment of the present invention.

What Fig. 2 B represented is the cut-away view of the installing mode one of Fig. 2 A window slide.

Fig. 2 C represents is the cut-away view of installing mode two of the window slide of Fig. 2 A.

Fig. 2 D represents is the cut-away view of installing mode three of the window slide of Fig. 2 A.

Fig. 3 A represents is first cut-away view that the window slide of Fig. 2 D is established with the shield assembly ring.

Fig. 3 B represents is second cut-away view that the window slide of Fig. 2 D is established with the shield assembly ring.

Embodiment

Please refer to Fig. 2 A～2B, Fig. 2 A represents the exploded view according to the scanning means of preferred embodiment of the present invention, the cut-away view of the installing mode one of Fig. 2 B presentation graphs 2A window slide.Shown in Fig. 2 A～2B, scanning means 2 comprises housing 20, optical module 21, goes up coverboard 22 and window slide 23.Optical module 21 is arranged at housing 20 inside, and housing 20 also has the first opening 20A.Last coverboard 22 is arranged on the housing 20, and has the second opening 22A, and this second opening 22A is provided with corresponding to the first opening 20A.Window slide 23 is installed on the first opening 20A, and is provided with corresponding to the second opening 22A.Wherein, window slide 23 embeds among the second opening 22A via the assembling of housing 20 with last coverboard 22.Window slide 23 for example is general window glass, yet its material also can be an acryl.

Shown in Fig. 2 B, optical module 21 comprises reflector group 21A, lens 21B and optical sensing subassembly 21C.The light that light source 24 throws can penetrate window slide 23, is entered in the housing 20 by the file on it (not illustrating) reflection again, passes through reflector group 21A, lens 21B in regular turn, by optical sensing subassembly 21C the signal of scanning is received and changes to finish scanning at last.Wherein optical sensing subassembly 21C for example be charge coupled device (charge-coupled device, CCD).

Scanning means 2 for example is paper feed type (sheet-fed) scanner, it also comprises paper feed unit (not illustrating), be arranged on the coverboard 22, pass through the second opening 22A in order to drive the file that to scan along the surface away from housing 20 (for example being the casket plate of walking paper box of scanning means 2) of last coverboard 22, make optical module 21 can read data on the file.Because window slide 23 is to be installed in the first opening 20A of housing 20 earlier, again by making up housing 20 and last coverboard 22 to embed the second opening 22A, after assembling is finished, shown in Fig. 2 B, the following table sheet of window slide 23 will be completely enclosed within the housing 20, therefore can avoid the following table sheet of dust attached to window slide 23 fully.Certainly, window slide 23 also can utilize alternate manner to reach except combining with housing 20 in aforementioned mode.The following drawings illustrates one by one.

Please refer to Fig. 2 C～2D, Fig. 2 C represents is the cut-away view of installing mode two of the window slide of Fig. 2 A, and Fig. 2 D represents is the cut-away view of installing mode three of the window slide of Fig. 2 A.Be simplified, in following icon, will omit the drafting of optical module 21 and light source 24.In fact housing 20 can comprise first housing 201 and second housing 202, and wherein optical module 21 is installed in first housing 201.Second housing 202 is between first housing 201 and last coverboard 22, and second housing 202 has the first opening 20A, and window slide 23 is to be fixed on the first opening 20A.Shown in Fig. 2 C, second housing 202 can be installed on first housing 201, or shown in Fig. 2 D, makes between second housing 202 and first housing 201 and form the gap.

No matter be the installing mode shown in Fig. 2 B or 2C, owing to the lower surface of window slide 23 is closed, can prevent effectively that therefore dust is attached on the window slide 23.As for the installing mode shown in 2D figure, because this installing mode has reduced gap between the window slide 23 and first housing 201, significantly reduced the probability that dust is attached on window slide 23 lower surfaces.

In addition, for reaching the dustproof effect, the window glass 13 of the scanning means of also can be directly representing as Figure 1B in tradition, or around the window slide 23 of the scanning means 2 that the present invention such as Fig. 2 A represent, install other shield assembly, window glass 13 or window slide 23 are intercepted partially or completely with the external world.For example scanning means 2 can comprise shield assembly, in preferred embodiment, this shield assembly between housing 20 and last coverboard 22, and be positioned at window slide 23 around.Please refer to Fig. 3 A～3B, Fig. 3 A represents is first cut-away view that the window slide of Fig. 2 D is established with the shield assembly ring, and Fig. 3 B represents is second cut-away view that the window slide of Fig. 2 D is established with the shield assembly ring.As shown in Figure 3A, shield assembly 203 for example is to be installed on first housing 201.Or shown in Fig. 3 B, be installed in the lower surface place of coverboard 22.Certainly, be that example is done explanation though present embodiment is window slide 23 installing modes with Fig. 2 D, any so long as the design of at least one shield assembly is set around window slide or window glass, all belong to category of the present invention.

Disclosed scanning means of the above embodiment of the present invention and optical module thereof, by directly the window slide being attached on the housing with optical module, or the mode of minimizing window slide and body clearance, be stained with the lower surface that bonds to the window slide with the dust particle that prevents the external world, and then avoid dust particle to have influence on the picture quality that optical module captures.

In sum, though the present invention with the preferred embodiment exposure as above, yet it is not in order to limit the present invention.The persond having ordinary knowledge in the technical field of the present invention without departing from the spirit and scope of the present invention, can do various changes and retouching.Therefore, protection scope of the present invention is as the criterion with appending claims.

The primary clustering symbol description

1: paper feeding scanner 2: scanning means

10,20: housing 11: optical module

12,22: upper coverboard 13: window glass

14: paper feed mechanism 20A: first opening

21: optical module 21A: the speculum group

21B: lens 21C: optical sensing subassembly

22A: second opening 23: window slide

24: 201: the first housings of light source

Housing 203 in 202: the second: shield assembly

A: scanning document S: scan line

L1, L2: band line P1, P2: dust granule

Claims (17)

1. a scanning means is characterized in that, comprising:

Housing, this enclosure interior is provided with optical module, and in order to pick-up image, and this housing has first opening;

Last coverboard is arranged on this housing, and has second opening, and this second opening is corresponding to this first opening; And

The window slide is installed on this first opening, and to should the second opening setting;

Wherein, this window slide embeds this second opening via this housing and the assembling that should go up coverboard.

2. scanning means as claimed in claim 1 is characterized in that, this housing comprises:

First housing, this first enclosure interior is provided with this optical module; And

Second housing, this first housing and should between the coverboard, this second housing has this first opening, this window slide is installed on this first opening.

3. scanning means as claimed in claim 2 is characterized in that, this second housing is installed on this first housing.

4. scanning means as claimed in claim 2 is characterized in that, forms the gap in the middle of this second housing and this first housing.

5. scanning means as claimed in claim 4 is characterized in that, this second housing also comprises:

Shield assembly is positioned at around this window slide.

6. scanning means as claimed in claim 1 is characterized in that this optical module comprises reflector group, lens and optical sensing subassembly.

7. scanning means as claimed in claim 6 is characterized in that, this optical sensing subassembly is a Charged Coupled Device.

8. scanning means as claimed in claim 1 is characterized in that, also comprises:

The paper feed unit, in order to drive at least one file on this coverboard away from the surface of this housing by this second opening, make this optical module read data on this document.

9. scanning means as claimed in claim 1 is characterized in that, this scanning means is a paper feeding scanner.

10. a scanning means is characterized in that, comprising:

Housing, this enclosure interior is provided with optical module, and in order to pick-up image, and this housing has first opening;

Last coverboard is arranged on this housing, and has second opening, and this second opening is corresponding to this first opening;

The window slide is installed on this second opening; And

Shield assembly, this housing and should between the coverboard, and be positioned at around this window slide.

11. scanning means as claimed in claim 10 is characterized in that, this shield assembly is installed on this housing.

12. scanning means as claimed in claim 10 is characterized in that, this shield assembly is installed on this on coverboard.

13. scanning means as claimed in claim 10 is characterized in that, this optical module comprises reflector group, lens and optical sensing subassembly.

14. scanning means as claimed in claim 13 is characterized in that, this optical sensing subassembly is a Charged Coupled Device.

15. scanning means as claimed in claim 10 is characterized in that, also comprises:

The paper feed unit, in order to drive at least one file on this coverboard away from the surface of this housing by this second opening, make this optical module read data on this document.

16. scanning means as claimed in claim 10 is characterized in that, this scanning means is a paper feeding scanner.

17. an optical module is characterized in that, comprising:

As each described housing, optical module and window slide among the claim 1-7.

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