CN107317950A - Photosensitive equipment with inclined background film and photosensitive method thereof - Google Patents
Photosensitive equipment with inclined background film and photosensitive method thereof Download PDFInfo
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- CN107317950A CN107317950A CN201710631179.4A CN201710631179A CN107317950A CN 107317950 A CN107317950 A CN 107317950A CN 201710631179 A CN201710631179 A CN 201710631179A CN 107317950 A CN107317950 A CN 107317950A
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- scanning
- lighting apparatus
- background plate
- signal
- photosensory assembly
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000001939 inductive effect Effects 0.000 claims description 27
- 239000000758 substrate Substances 0.000 claims description 22
- 238000004020 luminiscence type Methods 0.000 claims description 17
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims description 4
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 4
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 4
- -1 polypropylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000007639 printing Methods 0.000 claims description 3
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000004425 Makrolon Substances 0.000 claims 1
- 239000004417 polycarbonate Substances 0.000 claims 1
- 229920000515 polycarbonate Polymers 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 16
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 241001536352 Fraxinus americana Species 0.000 description 1
- 150000004651 carbonic acid esters Chemical class 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
- H04N1/00729—Detection means
- H04N1/00734—Optical detectors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
- H04N1/00763—Action taken as a result of detection
- H04N1/00774—Adjusting or controlling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Scanning Arrangements (AREA)
- Image Input (AREA)
Abstract
A photosensitive device comprises a paper feeding channel, a first photosensitive assembly and a first background sheet. The paper feeding channel is provided with a scanning window. The first photosensitive assembly is arranged on the first side of the scanning window and emits first scanning light towards the scanning window. The first background sheet is arranged on the second side of the scanning window and is provided with a first reflecting surface, and the first reflecting surface reflects the first scanning light passing through the scanning window to pass through the scanning window and return to the first photosensitive assembly. The first reflecting surface of the first background sheet is arranged in a non-parallel way with the scanning window. The photosensitive device can further comprise a second photosensitive assembly and a second background sheet. The second photosensitive assembly is arranged on the second side of the scanning window and emits a second scanning light towards the scanning window. The invention also provides a photosensitive method. Therefore, the boundary detection effect can be achieved.
Description
Technical field
The present invention relates to a kind of lighting apparatus, more particularly to a kind of lighting apparatus with sloping background piece.
Background technology
In traditional lighting apparatus of for example paper feeding scanner, because to carry out the correction of standard white, need
One background plate come allow illuminant module carry out standard white correction.Most file is all with white background, therefore, photosensitive mould
Luminance difference of the white background that block is sensed generally with background plate is little, it is impossible to allow lighting apparatus seek the action on side, this
Act is unfavorable for automatic edge cutting (Auto-crop) and skew corrected (De-skew).Although a black background can be provided,
Black background is unfavorable for the correction of standard white, therefore, and black background can be used only in falt bed scanner.
Therefore, how to provide it is a kind of can carry out automatic edge cutting and the lighting apparatus of skew corrected, be that this case is to be solved
Problem.
The content of the invention
It is an object of the present invention to provide a kind of lighting apparatus with sloping background piece, for provide automatic edge cutting and
The function of skew corrected.
To reach above-mentioned purpose, the present invention provides a kind of lighting apparatus, includes paper feed passage, the first photosensory assembly and the
One background plate.Paper feed passage has scanning window.First photosensory assembly is arranged at the first side of scanning window, and is sent towards scanning window
First scanning ray.First background plate is arranged at the second side of scanning window, and with the first reflecting surface, the first reflecting surface will pass through
The first scanning ray reflection of scanning window returns to the first photosensory assembly through scanning window.First reflecting surface of the first background plate with
Window is scanned to set to be non-parallel.
Above-mentioned lighting apparatus can also include the second photosensory assembly and the second background plate.Second photosensory assembly, which is arranged at, to be swept
The second side of window is retouched, and the second scanning ray is sent towards scanning window.Second background plate is arranged at the first side of scanning window, and has
There is the second reflecting surface, the second reflecting surface will reflect through scanning window that to return to second photosensitive by scanning the second scanning ray of window
Component.Second reflecting surface of the second background plate is set with scanning window to be non-parallel.
In above-mentioned lighting apparatus, swept when data medium is fed through along paper feed passage by the feed mechanism of lighting apparatus
When retouching window, the Part I of the first scanning ray reflects back into the first photosensory assembly by the first face of data medium, and produces the
Scan signal, the Part II of the first scanning ray reflects back into the first photosensory assembly by the first background plate, and produces first
Background signal.
The present invention also provides a kind of photosensitive method, and applied in above-mentioned lighting apparatus, photosensitive method is comprised the steps of：Feedback
Data medium is sent to enter paper feed passage；The first scanning signal and the mixed signal of the first background signal are produced according to following step：
Before data medium is by scanning window, the first photosensory assembly is set to sense the Part II of the first scanning ray；In data medium
By scanning during window, the first photosensory assembly is set to sense the Part I and Part II of the first scanning ray；It is logical in data medium
Over-scan after window, the first photosensory assembly is sensed the Part I of the first scanning ray；And the spy according to the first background signal
Property isolates the first scanning signal from mixed signal.
Pass through above-mentioned lighting apparatus, it is possible to use inclined background plate come the background of GTG is provided and with data medium
White background is otherwise varied, reach it is automatic cut and skew corrected function.Furthermore, background plate can be driven by drive mechanism
Rotation is to horizontality, to provide the effect of gamma correction.In addition, background plate can be driven to rotate to other by drive mechanism
Angle of inclination, to provide the background effect of different shade of gray.Features described above, can be completed with uniform background piece, simple in construction
And effect is significantly, a kind of effect of effective background detecting can be provided for paper feeding scanner.
For the above of the present invention can be become apparent, preferred embodiment cited below particularly, and coordinate institute's accompanying drawings, make
Describe in detail as follows.
Brief description of the drawings
The embodiment of the present invention is described in further detail below in conjunction with accompanying drawing.
Fig. 1 and Fig. 2 shows the schematic diagram of the two states of the lighting apparatus according to present pre-ferred embodiments；
Fig. 3 shows the schematic diagram of luminescence component and inductive component；
Fig. 4 A and Fig. 4 B show an example of the index path corresponding to Fig. 1 and Fig. 2 respectively；
Fig. 5 A and Fig. 5 B show another example of the index path corresponding to Fig. 1 and Fig. 2 respectively；
Fig. 6 shows the schematic diagram reduced automatically；
Fig. 7 shows the schematic diagram of skew corrected；
Flow chart of Fig. 8 displays according to the photosensitive method of present pre-ferred embodiments.
Component label instructions：
A：Size
A1：First angle
A2：Second angle
B：Size
BD：Border
IB：Image
IM：Image
L1：First scanning ray
L2：Second scanning ray
M：Data medium
M1：First face
M2：Second face
R1、R2、R3：Reflected light
S1：First scanning signal
S2：First background signal
S3：Second scanning signal
S4：Second background signal
S5：First correction signal
S6：Second correction signal
ST1 to ST3：Step
1：Lighting apparatus
3：Feed mechanism
3A、3B、3C、3D：Feed roller
10：Paper feed passage
11：Scan window
20：First photosensory assembly
21：First luminescence component
21A：Light source
21B：Light-guiding pillar
22：First inductive component
22A：Lens array
22B：Sensing array
30：First background plate
30A：First reflecting surface
40：First transparent substrates
50：Second transparent substrates
60：Second photosensory assembly
61：Second luminescence component
61A：Light source
61B：Light-guiding pillar
62：Second inductive component
62A：Lens array
62B：Sensing array
70：Second background plate
70A：Second reflecting surface
80：First drive mechanism
85：Second drive mechanism
90：Processor
Embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.Although description of the invention will combine preferred embodiment
Introduce together, but this feature for not representing this invention is only limitted to the embodiment.On the contrary, being invented with reference to embodiment
The purpose of introduction is the other selections or transformation for being possible to extend to cover the claim based on the present invention.In order to carry
Understand for the depth to the present invention, many concrete details will be included in describing below.The present invention can also be thin without using these
Section is implemented.In addition, in order to avoid the emphasis of the chaotic or fuzzy present invention, some details will be omitted in the de-scription.
Linear image sensor (Liner Image Sensor) is made up of more several sensors, these sensors row
In line, spacing is consistent for row, and the power to reflected light produces different voltages, there is Charged Coupled Device image sensor on the market
(Charge-coupled device (CCD) type image sensor), contact image sensor (Contact Image
Sensor, CIS) two kinds of product, especially CIS because cheap largely using on the scanner.Embodiments of the invention can
Applied to above two sensor, to coordinate inclined background plate, can provide GTG background and with the white of data medium
Background is otherwise varied, is so conducive to the execution of follow-up automatic edge cutting and skew corrected.
Fig. 1 and Fig. 2 shows the schematic diagram of the two states of the lighting apparatus according to present pre-ferred embodiments.As Fig. 1 with
Shown in Fig. 2, the lighting apparatus 1 of the present embodiment is for example a paper feeding scanner, and number is captured while data medium is fed
According to the image of media.Although implementing in figure with Double face scanner, this is not limited the invention to, because single-sweep
Instrument can also reach the effect of the present invention.Lighting apparatus 1 includes paper feed passage 10, the first photosensory assembly 20 and the first background plate
30.In this way, the effect of single-sweep can be implemented.In order to perform duplex scanning, lighting apparatus 1 can also include second photosensitive group
The background plate 70 of part 60 and second.
Paper feed passage 10 has scanning window 11.First photosensory assembly 20 is arranged at the first side of scanning window 11, and towards sweeping
Retouch window 11 and send the first scanning ray L1.Second photosensory assembly 60 be arranged at scanning window 11 the second side, and towards scanning window 11
Send the second scanning ray L2.
First background plate 30 is arranged at the second side of scanning window 11, and with the first reflecting surface 30A, will be by scanning window
11 the first scanning ray L1 reflections return to the first photosensory assembly 20 through scanning window 11.Second background plate 70 is arranged at scanning
First side of window 11, and with the second reflecting surface 70A, will be reflected by the second scanning ray L2 for scanning window 11 through scanning
Window 11 and return to the second photosensory assembly 60.First side and the second side be back to side, be to be made with upside with downside in Fig. 1
Explanation.That is, the first background plate 30 intersects with the connecting line of the first photosensory assembly 20 with scanning window 11.
In the present embodiment, the first reflecting surface 30A of the first background plate 30 is set with scanning window 11 to be non-parallel, to allow
First background plate 30 provides GTG background to reach the effect of boundary detection.In addition, the second reflecting surface 70A of the second background plate 70
Set with scanning window 11 to be non-parallel, reach the effect of boundary detection to allow the second background plate 70 to provide GTG background.The
One reflecting surface 30A is reflects the first scanning ray L1 face, and the second reflecting surface 70A is the second scanning ray L2 of reflection face.
Above-mentioned lighting apparatus 1 can also include the first transparent substrates 40 and the second transparent substrates 50, be separately positioned on scanning
Both sides of window 11, and positioned between the first photosensory assembly 20 and the first background plate 30, or positioned at the second photosensory assembly 60 with
Between second background plate 70.In the present embodiment, the first transparent substrates 40 are to be arranged in parallel with the second transparent substrates 50, Liang Zheding
Justice goes out to scan the scope of window 11.The material of first transparent substrates 40 and the second transparent substrates 50 is selected from by glass, poly- carbonic acid
Ester (PC), polypropylene (Polypropylene (PP)), acrylonitrile-butadiene-styrene copolymer (Acrylonitrile
Butadiene Styrene (ABS) resin) and the group that is constituted of polymethyl methacrylate (PMMA).In the present embodiment,
First background plate 30 and the second background plate 70 are all the sheets that strip is presented, it is possible to reduce between transparent substrates and photosensory assembly
Space.In another embodiment, the first background plate 30 can be presented with the second background plate 70 in the way of triangle, with provider
Just it is installed on the effect of transparent substrates or photosensory assembly.It is worth noting that, scanning window 11 is not necessarily by the first printing opacity base
Plate 40 is defined with the second transparent substrates 50, can also be defined by single transparent substrates, or can also be by with opening
Fairlead is defined.In addition, the first reflecting surface 30A of the first transparent substrates 40 and the first background plate 30 is set to be non-parallel, and
Second reflecting surface 70A of the second transparent substrates 50 and the second background plate 70 is set to be non-parallel.
In the present embodiment, the first background plate 30 is presented first angle A1 with scanning window 11 and set, the second background plate 70 with
Scan window 11 and second angle A2 settings are presented, and first angle A1 is equal with second angle A2.In an example, first angle A1
Between 3 ° and 30 °, and the shade of gray that senses of a plurality of first inductive components 22 (pure white ash between 240 and 100
255) gradient is.In another example, first angle A1 is between 10 degree and 20 degree, between preferably 12 ° and 15 °, and multiple
The shade of gray that several first inductive components 22 are sensed is between 170 and 160.However, in another example, first angle A1
It is unequal with second angle A2, to have the file of different background to provide appropriate different GTG backgrounds for positive and negative.
First photosensory assembly 20 includes the first luminescence component 21 and a plurality of first inductive components 22.Second photosensory assembly 60
Include the second luminescence component 61 and a plurality of second inductive components 62.First background plate 30 and a plurality of phases of first inductive component 22
To setting, and the second background plate 70 is oppositely arranged with a plurality of second inductive components 62.First luminescence component 21 towards scanning window
11 the first scanning ray L1 of transmitting, the second luminescence component 61 launches the second scanning ray L2 towards scanning window 11.A plurality of first
Inductive component 22 receives the first scanning ray L1 for being reflected of the first background plate 30, and a plurality of second inductive components 62 receive the
The second scanning ray L2 that two background plates 70 are reflected.
In addition to sensing the grey decision-making of the first background plate 30 and the second background plate 70, the first photosensory assembly 20 and the second sense
Optical assembly 60 also can be used to scan data media M.As data medium M along paper feed passage 10 by the feed mechanism 3 of lighting apparatus 1
When being fed through scanning window 11, the first scanning ray L1 Part I reflects back into first by data medium M the first face M1
Photosensory assembly 20, and produce the first scanning signal S1.First scanning ray L1 Part II is reflected back by the first background plate 30
To the first photosensory assembly 20, and produce the first background signal S2.First scanning ray L1 Part I and Part II are edges
The direction extension of drawing, the width for constituting data medium M (is approximately perpendicular to data medium M direct of travel, if figure
1 plane is X/Y plane, then width is exactly Z-direction) illuminating ray.Second scanning ray L2 Part I is counted
Reflect back into the second photosensory assembly 60 according to media M the second face M2, and produce the second scanning signal S3.Second scanning ray L2's
Part II reflects back into the second photosensory assembly 60 by the second background plate 70, and produces the second background signal S4.Second scanning light
Line L2 Part I and the direction extension that Part II is along drawing, constitute the illumination light of data medium M width
Line.In the present embodiment, feed mechanism 3 includes feeding roller 3A, 3B, 3C and 3D.Scan window 11 between feeding roller 3A, 3B with
Feed between roller 3C, 3D, and from data medium M to the first light path of the first inductive component 22 and from the first background plate 30 to
Second light path of the first inductive component 22 is substantially vertical with data medium M and paper feed passage 10.
In order to perform the correction of standard white, lighting apparatus 1 can also include the first drive mechanism 80, be connected to the first background
Piece 30；And second drive mechanism 85, it is connected to the second background plate 70.In scanning-mode it, the first drive mechanism 80 driving the
First reflecting surface 30A of one background plate 30 is rotated into relative to the first photosensory assembly 20 and non-parallel setting is presented with scanning window 11,
And second drive mechanism 85 drive the second background plate 70 the second reflecting surface 70A be rotated into and sweep relative to the second photosensory assembly 60
Retouch window 11 and non-parallel setting, that is, the state shown in Fig. 1 is presented.
Under a correction mode, the first drive mechanism 80 drives the first background plate 30 to be rotated relative to the first photosensory assembly 20
Into with scanning window 11 it is almost parallel, and the first photosensory assembly 20 receive the first scanning ray L1 and obtain the first correction signal S5；
And second drive mechanism 85 drive the second background plate 70 relative to the second photosensory assembly 60 be rotated into scan window 11 it is almost parallel,
And the second photosensory assembly 60 receives the second scanning ray L2 and obtains the second correction signal S6, that is, the state shown in Fig. 2.Such as
This one, the processor 90 of lighting apparatus 1 can just correct the first scanning signal S1, and foundation according to the first correction signal S5
Second correction signal S6 corrects the second scanning signal S3.
Under other patterns, the first drive mechanism 80 can also drive the first background plate 30 to turn to different angle positions
Put, to provide the background of different shade of gray, same technology also applies to the second drive mechanism 85 and the second background plate 70.
It is worth noting that, Fig. 1 view shows that both the first light path and the second light path are likely to be presence simultaneously
, because the first background plate 30 is commonly designed wider (paper of the width perpendicular to Fig. 1), and data medium M
It is possible to come narrow than the first background plate 30, so the first light path is positioned at data medium M inner side, and the second light path is to be located at
Data medium M outside.
Fig. 3 shows the schematic diagram of luminescence component and inductive component.As shown in figure 3, the first luminescence component 21 includes two light
Source 21A (single light source also a can) and light-guiding pillar 21B, light-guiding pillar 21B transport light source 21A equalizing light rays and being oriented to down
OK.In addition, these first inductive components 22 include an a lens array 22A and sensing array 22B.Similarly, the second hair
Optical assembly 61 includes two light source 61A (single light source also a can) and light-guiding pillar 61B, and light-guiding pillar 61B is by light source 61A light
Homogenize and be oriented to and run down.In addition, these first inductive components 22 are included by a lens array 62A and a sensing
Array 62B.
Fig. 4 A and Fig. 4 B show an example of the index path corresponding to Fig. 1 and Fig. 2 respectively.As shown in Figure 4 A and 4 B shown in FIG.,
The first scanning ray L1 that first luminescence component 21 is launched, if the law for following incidence angle equal to angle of reflection (refers to normal
N), then reflected light R1 intensity highest, it is unrestrained anti-in the presence of some but because the first background plate 30 itself is not minute surface
Penetrate phenomenon so that reflected light R2 and R3 strength decrease.Therefore, reflected light received by Fig. 4 A the first inductive component 22
Intensity (intensity for being less than reflected light R3) is less than the intensity (intensity for being higher than reflected light R3) of the reflected light received by Fig. 4 B.Cause
This, the effect of the boundary detection for the scan-image that the first background plate 30 of tilting can provide GTG background to reach data medium
Really.
Fig. 5 A and Fig. 5 B show another example of the index path corresponding to Fig. 1 and Fig. 2 respectively.Come with another viewpoint
Say, the first scanning ray L1 of the identical angle of divergence of the first luminescence component 21 Energy distribution is on inclined first background plate 30
Length be size A, and the length being distributed on the first horizontal background plate 30 be size B, wherein size A be more than size B, institute
The scattered of energy of light source is caused with inclined first background plate 30 so that under the energy for the light that the first inductive component 22 is received
Drop, that is, sense luminance-reduction.
Fig. 6 shows the schematic diagram reduced automatically.Fig. 7 shows the schematic diagram of skew corrected.As shown in Figures 6 and 7, scanned
The image IB (surrounding image IM) of data medium M of the image arrived comprising inner ring image IM and the background plate of outer ring, because shadow
As IB shade of gray, (partially dark, shade of gray is for example 160) to be significantly less than image IM background (partially bright, 220) shade of gray is for example
Shade of gray, so processor 90 can look for the image IM corresponding to the first scanning signal S1 according to the first background signal S2
One or more boundary B D, and processor 90 looks for the image IM corresponding to the second scanning signal S3 according to the second background signal S4
One or more boundary B D.In this way, processor 90 can be cut and skew corrected automatically.
In another example, it would however also be possible to employ fixed background plate, in the case, processor 90 can be according to first
Background signal S2 corrects the first scanning signal S1, and corrects the second scanning signal S3 according to the second background signal S4.Also
It is to say, the corresponding shade of gray of background signal is, it is known that can be corrected according to this shade of gray.
Flow chart of Fig. 8 displays according to the photosensitive method of present pre-ferred embodiments.As shown in figure 8, the present embodiment is provided
A kind of photosensitive method, applied in above-mentioned lighting apparatus 1.Photosensitive method is comprised the steps of.First, step ST1, feeds data
Media M enters paper feed passage 10.Then, the first scanning signal S1 and the first background signal S2 mixing is produced according to following step
Signal：(a) before data medium M reaches scanning window 11, the first photosensory assembly 20 is made to sense the second of the first scanning ray L1
Part；(b) when data medium M is by scanning window 11, first of the first scanning ray L1 of the first photosensory assembly 20 sensing is made
Divide and Part II；(c) after data medium M leaves scanning window 11, the first photosensory assembly 20 is made to sense the first scanning ray L1
Part I.Finally, the characteristic according to the first background signal S2 isolates the first scanning signal S1 from mixed signal.First
Background signal S2 characteristic corresponds to the angle of inclination of the first background plate 30, that is, corresponding to the first above-mentioned inductive component 22
First reflecting surface 30A of the first background plate 30 sensed shade of gray.Above-mentioned mixed signal for example corresponds to Fig. 6 or figure
The signal of 7 overall image.Can so reach background detecting with cut automatically and skew corrected function.
Pass through above-mentioned lighting apparatus and photosensitive method, it is possible to use inclined background plate come the background of GTG is provided and with
The white background of data medium is otherwise varied, reach it is automatic cut and skew corrected function.Furthermore, can be with by drive mechanism
Driving background plate is rotated to horizontality, to provide the effect of gamma correction.In addition, background plate can be driven by drive mechanism
Rotation is to other angles of inclination, to provide the background effect of different shade of gray.Features described above, can be with uniform background piece come complete
Into simple in construction and effect significantly, can provide a kind of effect of effective background detecting for paper feeding scanner.
Technology of the specific embodiment only to the convenient explanation present invention proposed in the detailed description of preferred embodiment
Content, rather than the present invention is narrowly limited to above-described embodiment, in the spirit and right without departing from the present invention
Situation, many variations done are implemented, and come under the scope of the present invention.
Claims (26)
1. a kind of lighting apparatus, it is characterised in that include：
Paper feed passage, with scanning window；
First photosensory assembly, is arranged at the first side of the scanning window, and send the first scanning ray towards the scanning window；With
And
First background plate, is arranged at the second side of the scanning window, and with the first reflecting surface, first reflecting surface will pass through
First scanning ray reflection of the scanning window returns to first photosensory assembly through the scanning window；
Wherein, first reflecting surface of first background plate is set with the scanning window to be non-parallel.
2. lighting apparatus as claimed in claim 1, it is characterised in that first photosensory assembly comprising the first luminescence component with
A plurality of first inductive components, first luminescence component launches first scanning ray towards the scanning window, and described
A plurality of first inductive components receive first scanning ray that first background plate is reflected.
3. lighting apparatus as claimed in claim 2, it is characterised in that first background plate and a plurality of first sensings
Component is oppositely arranged.
4. lighting apparatus as claimed in claim 2, it is characterised in that first background plate is presented one with the scanning window
First angle is set, and the first angle is between 3 ° and 30 °.
5. lighting apparatus as claimed in claim 4, it is characterised in that the GTG that a plurality of first inductive components are sensed
Degree is between 240 and 100.
6. lighting apparatus as claimed in claim 4, it is characterised in that the first angle is between 12 ° and 15 °.
7. lighting apparatus as claimed in claim 6, it is characterised in that the GTG that a plurality of first inductive components are sensed
Degree is between 170 and 160.
8. lighting apparatus as claimed in claim 1, it is characterised in that also comprising the first transparent substrates, positioned at the described first sense
Between optical assembly and first background plate.
9. lighting apparatus as claimed in claim 8, it is characterised in that the material of first transparent substrates is selected from by glass
Glass, makrolon (PC), polypropylene (Polypropylene (PP)), acrylonitrile-butadiene-styrene copolymer
The group that (Acrylonitrile Butadiene Styrene (ABS) resin) and polymethyl methacrylate (PMMA) are constituted
Group.
10. lighting apparatus as claimed in claim 1, it is characterised in that also comprising the first transparent substrates and the second transparent substrates,
The both sides of the scanning window are respectively arranged at, and positioned between first photosensory assembly and first background plate.
11. lighting apparatus as claimed in claim 1, it is characterised in that when data medium is described along the paper feed passage
When the feed mechanism of lighting apparatus is fed through the scanning window, the Part I of first scanning ray is by the data matchmaker
First face of body reflects back into first photosensory assembly, and produces the first scanning signal, and the second of first scanning ray
Part reflects back into first photosensory assembly by first background plate, and produces the first background signal.
12. lighting apparatus as claimed in claim 11, it is characterised in that the processor of the lighting apparatus is according to described first
Background signal looks for one or more borders of the image corresponding to first scanning signal.
13. lighting apparatus as claimed in claim 11, it is characterised in that the processor of the lighting apparatus is according to described first
Background signal corrects first scanning signal.
14. lighting apparatus as claimed in claim 11, it is characterised in that also comprising the first drive mechanism, is connected to described
One background plate, wherein：
In scanning-mode it, first drive mechanism drives first reflecting surface of first background plate relative to described
First photosensory assembly is rotated into is presented non-parallel set with the scanning window；And
Under correction mode, first drive mechanism drives first background plate to be rotated relative to first photosensory assembly
Into almost parallel with the scanning window, and first photosensory assembly receives first scanning ray and obtains the first correction letter
Number, the processor of the lighting apparatus corrects first scanning signal according to first correction signal.
15. lighting apparatus as claimed in claim 1, it is characterised in that also include：
Second photosensory assembly, is arranged at second side of the scanning window, and send the second scanning light towards the scanning window
Line；And
Second background plate, is arranged at first side of the scanning window, and with the second reflecting surface, second reflecting surface will
Second photosensory assembly is returned to through the scanning window by second scanning ray reflection of the scanning window, its
In, second reflecting surface of second background plate is set with the scanning window to be non-parallel.
16. lighting apparatus as claimed in claim 15, it is characterised in that also comprising the first transparent substrates and the second printing opacity base
Plate, is respectively arranged at the both sides of the scanning window, and positioned between first photosensory assembly and first background plate.
17. lighting apparatus as claimed in claim 16, it is characterised in that first transparent substrates and the second printing opacity base
Plate is to be arranged in parallel.
18. lighting apparatus as claimed in claim 16, it is characterised in that first transparent substrates and first background plate
First reflecting surface set to be non-parallel, and second reflection of second transparent substrates and second background plate
Face is set to be non-parallel.
19. lighting apparatus as claimed in claim 15, it is characterised in that wherein：
First photosensory assembly includes the first luminescence component and a plurality of first inductive components, the first luminescence component direction
The scanning window launches first scanning ray, and a plurality of first inductive components receive the first background plate institute instead
First scanning ray penetrated；And
Second photosensory assembly includes the second luminescence component and a plurality of second inductive components, the second luminescence component direction
The scanning window launches second scanning ray, and a plurality of second inductive components receive the second background plate institute instead
Second scanning ray penetrated.
20. lighting apparatus as claimed in claim 15, it is characterised in that first background plate and the scanning window are presented the
One angle setting, second background plate is presented second angle with the scanning window and set, and the first angle and second jiao
Degree is unequal.
21. lighting apparatus as claimed in claim 15, it is characterised in that first background plate and the scanning window are presented the
One angle setting, second background plate is presented second angle with the scanning window and set, and the first angle and second jiao
Degree is equal.
22. lighting apparatus as claimed in claim 15, it is characterised in that when data medium is described along the paper feed passage
When the feed mechanism of lighting apparatus is fed through the scanning window, the Part I of first scanning ray is by the data matchmaker
First face of body reflects back into first photosensory assembly, and produces the first scanning signal；The one of first scanning ray
Two parts reflect back into first photosensory assembly by first background plate, and produce the first background signal；Described second sweeps
The Part I for retouching light reflects back into second photosensory assembly by the second face of the data medium, and produces described second
Scanning signal；And the Part II of second scanning ray reflects back into described second photosensitive group by second background plate
Part, and produce second background signal.
23. lighting apparatus as claimed in claim 22, it is characterised in that the processor of the lighting apparatus is according to described first
Background signal looks for one or more borders of the image corresponding to first scanning signal；And the processor is according to described
Two background signals look for one or more borders of the image corresponding to second scanning signal.
24. lighting apparatus as claimed in claim 22, it is characterised in that the processor of the lighting apparatus is according to described first
Background signal corrects first scanning signal, and corrects second scanning signal according to second background signal.
25. lighting apparatus as claimed in claim 22, it is characterised in that also include：
First drive mechanism, is connected to first background plate；And
Second drive mechanism, is connected to second background plate, wherein：
In scanning-mode it, first drive mechanism drives first background plate relative to the institute of first photosensory assembly
State the first reflecting surface be rotated into it is described scanning window present it is non-parallel set, and second drive mechanism driving it is described second the back of the body
Second reflecting surface of a piece of scenery is rotated into relative to second photosensory assembly and non-parallel set is presented with the scanning window；With
And
Under correction mode, first drive mechanism drives first background plate to be rotated relative to first photosensory assembly
Into almost parallel with the scanning window, and first photosensory assembly receives first scanning ray and obtains the first correction letter
Number；And second drive mechanism drives second background plate to be rotated into and the scanning relative to second photosensory assembly
Window is almost parallel, and second photosensory assembly receives second scanning ray and obtains the second correction signal, described photosensitive
The processor of equipment corrects first scanning signal according to first correction signal, and according to second correction signal
To correct second scanning signal.
26. a kind of photosensitive method, applied in lighting apparatus as claimed in claim 11, the photosensitive method includes following step
Suddenly：
The data medium is fed into the paper feed passage；
First scanning signal and the mixed signal of first background signal are produced according to following step：(a) in the number
Before the media arrival scanning window, make described second of the first photosensory assembly sensing first scanning ray
Point；(b) when the data medium is by the scanning window, first photosensory assembly is made to sense first scanning ray
The Part I and the Part II；(c) after the data medium leaves the scanning window, described first photosensitive group is made
Part senses the Part I of first scanning ray；And
Characteristic according to first background signal isolates first scanning signal from the mixed signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW106119183 | 2017-06-09 | ||
| TW106119183 | 2017-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720932143.5U Active CN207150695U (en) | 2017-06-09 | 2017-07-28 | Photosensitive device with inclined background sheet |
| CN201710631179.4A Active CN107317950B (en) | 2017-06-09 | 2017-07-28 | Photosensitive equipment with inclined background film and photosensitive method thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720932143.5U Active CN207150695U (en) | 2017-06-09 | 2017-07-28 | Photosensitive device with inclined background sheet |
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| CN (2) | CN207150695U (en) |
| TW (1) | TWI644163B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112188027A (en) * | 2020-09-09 | 2021-01-05 | 安徽高哲信息技术有限公司 | Double-sided scanning device and double-sided scanner with mutually scanning backgrounds |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207150695U (en) * | 2017-06-09 | 2018-03-27 | 虹光精密工业股份有限公司 | Photosensitive device with inclined background sheet |
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Also Published As
| Publication number | Publication date |
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| TWI644163B (en) | 2018-12-11 |
| CN107317950B (en) | 2020-05-26 |
| CN207150695U (en) | 2018-03-27 |
| TW201903509A (en) | 2019-01-16 |
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