CN1226651C - Optical source colour-adjusting apparatus and method - Google Patents
Optical source colour-adjusting apparatus and method Download PDFInfo
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- CN1226651C CN1226651C CN 02126823 CN02126823A CN1226651C CN 1226651 C CN1226651 C CN 1226651C CN 02126823 CN02126823 CN 02126823 CN 02126823 A CN02126823 A CN 02126823A CN 1226651 C CN1226651 C CN 1226651C
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- light
- image light
- light source
- optical sensor
- color
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Abstract
The present invention discloses a light source colour-adjusting device and a method. The light source of a scanning module is added with a reflecting sheet with desirable color, a plated film with the desirable color is formed on a lens, the lens is dyed to be the desirable color, or a light source is directly changed into the desirable color, so that the phenomenon of inconsistent size of the output intensity of red, green and blue primary colors of an ultimate charge-coupled element caused by different brightness of the light source, different penetration of wavelength of the lens for light, and the sensitometric discrepancy of the charge-coupled element can be improved.
Description
Technical field
The invention relates to a kind of optical source colour-adjusting apparatus, and particularly relevant for a kind of optical source colour-adjusting apparatus that is applied to the light source of an optic scan module.
Background technology
Input, processing and processing at image, become after a kind of popular interest, scanner just becomes one of basic configuration of many computing machine users, and it can be with the literal or the view data of file, magazine, books, picture etc., and scanning input computer is also handled.In various scanners, falt bed scanner is the most frequently used a kind of, and in falt bed scanner, scan module is to be installed on transparent platform below in the mode that can spur back and forth, places file on the transparent platform with scanning.Because scan module itself is not had power, therefore need for example drive again as gear trains such as servo motor, gear, belts.When desire uses a falt bed scanner to scan a file, file must be placed on the transparent platform, again the file cover plate be covered, make it smooth, scan then in transparent platform with the compressing file.
Scan module 700 (with reference to Fig. 1) in the known optical scanner generally comprises a light source 100, a reflector group 400, a lens combination 500 and an optical sensor, for example is Charged Coupled Device (CCD, Charge Couple Device) 600.When scanning, light source (for example being fluorescent tube) 100 is that irradiation is placed in the manuscript 200 on the light-passing board 300 (being aforesaid transparent platform), obtains an image light 110 through reflection (light source 100 is below the light-passing board 300) or transmission (light source 100 is above light-passing board 300).Reflector group 400 is made up by a plurality of catoptrons (401,402,403), and is disposed on the light path of image light 110, and it is manuscript 200 images can be imported in the reflector group 400, and the reflection of process reflector group 400 is resent to lens combination 500.Lens combination 500 is can receive the image light 110 of the manuscript 200 that reflector group 400 transmitted and image in charge coupled cell 600.
Wherein, light source 100 is very important assembly in the whole optical system of optic scan module 700.The light that light source 100 is sent, have the phenomenon that produces different brightness with frequency, effect after this phenomenon and charge coupled cell 600 collocation, for example be modularization translation function (MTF, Modulation Transfer Function) after the detection, tends to find to have color error ratio phenomenon to a certain degree, in firmware, compensated correction and must scan the back at every turn, just can obtain color accurately, rather lose time and cost.
The major function of lens combination 500 is that image light 110 is imaged in charge coupled cell 600 again.We can say the light signal that lens combination 500 is collected, is exactly all elements of back raw material sources to be processed, so its quality and correctness, is very important naturally.Generally speaking, as shown in Figure 2, lens combination 500 is made of the form of single lens multi-disc lens (example among the figure is three 510,520,530), be assembled in again in the lens sleeve 710 of optic scan module 700, it utilizes the lens of several pieces unlike materials or curvature, revises the aberration phenomenon that single lens may produce.Yet,, also can cause red (R), green (G) of last charge coupled cell 600, not of uniform size the causing of blue (B) three primary colors output intensity because the penetrance of 510,520,530 pairs of optical wavelength of lens differs.
Moreover, charge coupled cell 600 is made up of in the mode of line spread thousands of atomic little photodiodes (being also referred to as pixel Pixel), three sensors have all been comprised in each photodiode, be used for receiving the signal of Red Green Blue light respectively, in the work of scanning, charge coupled cell 600 can be sent the red, green, blue electric signal of simulation respectively with the light that each sequential received, after the analog digital conversion, send follow-up processing unit again to.Yet these sensors in the charge coupled cell 600 are not can only the single primary colors light of sensing, therefore the frequency response situation that color interferes with each other can take place.Therefore, charge coupled cell 600 can produce the difference of light sensitivity to different colours, and the scanning translational speed of adding because of charge coupled cell 600 promotes, and also can make the light sensitivity of charge coupled cell 600 reduce because of exposure descends.In sum, charge coupled cell 600 also can be because of the aforesaid former thereby generation Red Green Blue output intensity phenomenon that causes not of uniform size.
Summary of the invention
Therefore, purpose of the present invention is providing a kind of optical source colour-adjusting apparatus, and the light source of scan module is added the reflecting piece of desirable color, forms the plated film of a desired color or directly light source is made into desirable color on lens.So, brightness difference, lens because of light source differ to the optical wavelength penetrance and the difference of charge coupled cell light sensitivity to improve, the Red Green Blue output intensity of the final charge coupled cell that the causes phenomenon that causes not of uniform size.
According to above-mentioned purpose of the present invention, the present invention proposes a kind of optical source colour-adjusting apparatus, is applied to an optic scan module.This optic scan module comprises a light source at least, a reflector group, a lens combination and an optical sensor.Wherein, light source is in order to shine a manuscript and to obtain an image light.Reflector group is disposed in the light path of this image light, makes image light be projected to optical sensor.Lens combination then is disposed between optical sensor and the reflector group, on the light path of image light, wherein this pass is learned sensor and is had redness, blueness and green color output intensity.Optical source colour-adjusting apparatus of the present invention comprises:
One reflecting piece is disposed at the opposite side of light source irradiation draft manuscript direction, and this reflecting piece has a kind of color in the redness of being selected from, green, the blueness.
Perhaps an antireflection coating is formed at lens surface.This antireflection coating has a kind of color in the redness of being selected from, green, the blueness, and the selection of the color of this reflecting piece is relevant with the color output intensity of this optical sensor.
Again, the present invention proposes a kind of optic scan module, is suitable for a manuscript is scanned, and it comprises at least: a light source, a reflecting piece, a reflector group, a lens combination and an optical sensor.Wherein:
Light source is in order to the irradiation manuscript and obtain an image light.
Reflecting piece is disposed at the opposite side of light source irradiation draft manuscript direction, and this reflecting piece has a kind of color in the redness of being selected from, green, the blueness, but reflection source and strengthen the intensity of light source of image light in this color.
Reflector group is disposed in the light path of image light, receives and reflected image light.
Lens combination is disposed on the light path of image light, makes the reflector group reflection and next image light scioptics group.
Optical sensor is disposed on the light path of image light, receives the image light of scioptics group.
Wherein, lens combination has at least one lens, more has an antireflection coating in the mode of for example evaporation on the surface of these lens, and this antireflection coating is selected from a kind of color in redness, green, the blueness.
Perhaps, lens itself are promptly to have the color in the redness of being selected from, green, the blue group that is formed with dyeing way.
Person more, light source has more a color that is selected from redness, green, the blue group that is formed.
According to feature of the present invention, use has reflecting piece, the lens of a particular color, perhaps directly use light source with a particular color, improve the performance of light source, to avoid known final charge coupled cell in this particular color (for example being Red Green Blue) output intensity phenomenon that causes not of uniform size in this particular color.
According to feature of the present invention, directly improve the performance of light source in particular color, save the known step that in firmware, is compensated correction in each scanning back, to save time and cost.
Description of drawings
For above and other objects of the present invention, feature and advantage can be become apparent,, the present invention is described in detail below below in conjunction with accompanying drawing:
Fig. 1 is the side diagrammatic cross-section of known optic scan module;
Fig. 2 is the lens combination schematic perspective view of known optic scan module;
Fig. 3 is an embodiment of the invention optic scan module side diagrammatic cross-section;
Fig. 4 and Fig. 5 are the schematic perspective view and the side schematic views of the light source of first embodiment of the invention optic scan module;
Fig. 6 is the side schematic view of the lens combination of second embodiment of the invention optic scan module.
The label declaration of accompanying drawing
100,1100: light source
110,1110: image light
200,1200: manuscript
300,1300: light-passing board
400,1400: reflector group
401,402,403,1401,1402,1403: reflecting optics
500,1500; Lens combination
510,520,530,1510,1520,1530: lens
600,1600: optical sensor
700,1700: optic scan module
710: sleeve
1720: lamp socket
1800: reflecting piece
1900: rubber stopper
Embodiment
Embodiment 1
Fig. 3 is the side diagrammatic cross-section of embodiment of the invention optic scan module.Optic scan module 1700 of the present invention mainly comprises a light source 1100, a reflector group 1400, a lens combination 1500 and an optical sensor, for example is charge coupled cell (CCD, Charge CoupleDevice) 1600.When scanning, light source 1100 is that irradiation is placed in the manuscript 1200 on the light-passing board 1300, obtains an image light 1110 through reflection (light source 1100 is below the light-passing board 1300) or transmission (light source 1100 is above light-passing board 1300).Reflector group 1400 is made up by a plurality of catoptrons (1401,1402,1403), and be disposed on the light path of image light 1110, it is manuscript 1200 images can be imported in the reflector group 1400, and the reflection of process reflector group 1400 is resent to lens combination 1500.Lens combination 1500 is the image light 1110 that can receive the manuscript 1200 that reflector group 1400 transmitted, and images in charge coupled cell 1600.
Then referring again to Fig. 4 and Fig. 5, is the schematic perspective view and the side schematic view of the light source of present embodiment optic scan module.Light source 1100 is for example at least one fluorescent tube (among the 4th figure being two), and it is fixed in 1720 li of lamp sockets in the optic scan module 1700, and the fixed form of fluorescent tube 1100 for example is at its two ends, fills in fixing mode with rubber stopper 1900 respectively and fixes.For increasing the brightness of light source 1100, the opposite side in light source 1100 irradiation manuscripts 1200 directions disposes a reflecting piece 1800, strengthens the brightness of light source 1100 with reflection way.
Herein, for improving the known Red Green Blue output intensity phenomenon that causes not of uniform size in final charge coupled cell 1600, the present invention has the reflecting piece 1800 of a particular color according to required use, that is, if the final output intensity deficiency of the red light of charge coupled cell 1600 is found in the back after tested, then use red reflecting piece 1800, to add the output performance of intense light source 1100 in red light.In the same manner,, then use green reflecting piece 1800, to add the output performance of intense light source 1100 in green light if find the final output intensity deficiency of the green light of charge coupled cell 1600 after tested; If the final output intensity deficiency of the blue ray of charge coupled cell 1600 is found in the back after tested, then use blue reflecting piece 1800, to add the output performance of intense light source 1100 in blue light.As for employed shade or lightness etc., then look test result and adjust.
Except producing reflected light,, more can directly use light source 1100 with a particular color to add intense light source 1100 outside the mode of the performance of this color with this particular color with reflecting piece 1800 with particular color again.That is, if find the final output intensity deficiency of the red light of charge coupled cell 1600 after tested, then use red light source 1100, to add the output performance of intense light source 1100 in red light; If the final output intensity deficiency of the green light of charge coupled cell 1600 is found in the back after tested, then use green light source 1100, to add the output performance of intense light source 1100 in green light; If the final output intensity deficiency of the blue ray of charge coupled cell 1600 is found in the back after tested, then use blue light source 1100, to add the output performance of intense light source 1100 in blue light.
Embodiment 2
With reference to Fig. 6, be the side schematic view of the lens combination of the present invention's second preferred embodiment optic scan module.In the same manner, lens combination 1500 is made of the form of single lens multi-disc lens (among the present embodiment figure being three 1510,1520,1530).And be to improve known Red Green Blue output intensity in final charge coupled cell 1600 phenomenon that causes not of uniform size, present embodiment forms the antireflection coating 1540 with a particular color in the mode of for example evaporation on a surface 1512 of a slice lens 1510 wherein.
That is, if find the final output intensity deficiency of the red light of charge coupled cell 1600 after tested, then use red antireflection coating 1540, to add the output performance of intense light source 1100 in red light; If the final output intensity deficiency of the green light of charge coupled cell 1600 is found in the back after tested, then use green antireflection coating 1540, to add the output performance of intense light source 1100 in green light; If the final output intensity deficiency of the blue ray of charge coupled cell 1600 is found in the back after tested, then use blue antireflection coating 1540, to add the output performance of intense light source 1100 in blue light.
Again, except the mode of plated film, more can give dyeing way, can reach equally and add intense light source 1100 in the output of particular color performance to lens 1510.That is, if find the final output intensity deficiency of the red light of charge coupled cell 1600 after tested, then use and dye red lens 1510, to add the output performance of intense light source 1100 in red light; If the final output intensity deficiency of the green light of charge coupled cell 1600 is found in the back after tested, then use and dye green lens 1510, to add the output performance of intense light source 1100 in green light; If the final output intensity deficiency of the blue ray of charge coupled cell 1600 is found in the back after tested, then use and dye blue lens 1510, to add the output performance of intense light source 1100 in blue light.
Above-mentioned example only therein the wherein one side of a slice lens go up to form plated film or dyeing, but the present invention is also visual required, in other sheet lens even whole part or all of surfaces of lens, is formed the plated film of required color or dyes.
According to above-mentioned two embodiment as can be known, the present invention from the lamp source, reflecting piece, and aspect such as lens combination set about, to improve the known Red Green Blue output intensity phenomenon that causes not of uniform size in final charge coupled cell 1600, though all be example among the embodiment with the Red Green Blue, right the present invention is not limited to this three primary colors, so long as use lamp source, reflecting piece or lens with particular color, to improve the mode of light source in the performance of this particular color, no matter which kind of color this particular color is, creation spirit all according to the invention.
According to the embodiment of the invention described above as can be known, the present invention has following advantage at least:
(1) uses reflecting piece, lens with a particular color, perhaps directly use light source with a particular color, improve the performance of light source, to avoid known final charge coupled cell in this particular color (for example being Red Green Blue) output intensity phenomenon that causes not of uniform size in this particular color.
(2) directly improve the performance of light source, save the known step that in firmware, is compensated correction in each scanning back, to save time and cost in particular color.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limiting the present invention, anyly has the knack of this skill person, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the claim person of defining.
Claims (6)
1. optical source colour-adjusting apparatus, be applied to an optic scan module, this optic scan module comprises a light source at least, one reflector group, one lens combination and an optical sensor, wherein this light source is in order to shine a manuscript and to obtain an image light, this reflector group is disposed in the light path of this image light, make this image light be projected to this optical sensor, this lens combination then is disposed between this optical sensor and this reflector group, on the light path of this image light, wherein this optical sensor has redness, blue and green color output intensity is characterized in that, comprising:
One reflecting piece is disposed at this light source place, and is positioned at the opposite side of this manuscript direction of this light source irradiation, and this reflecting piece is selected from a kind of color in redness, green, the blueness, and the selection of the color of this reflecting piece is relevant with the color output intensity of this optical sensor.
2. optical source colour-adjusting apparatus, be applied to an optic scan module, this optic scan module comprises a light source at least, one reflector group, one lens combination and an optical sensor, wherein this light source is in order to shine a manuscript and to obtain an image light, this reflector group is disposed in the light path of this image light, make this image light be projected to this optical sensor, this lens combination has at least one lens, and be disposed between this optical sensor and this reflector group, on the light path of this image light, wherein this optical sensor has redness, blue and green color output intensity, it is characterized in that, comprising:
One antireflection coating is formed at this lens surface, and this antireflection coating is selected from a kind of color in redness, green, the blueness, and the selection of the color of this reflecting piece is relevant with the color output intensity of this optical sensor.
3. an optic scan module is suitable for a manuscript is scanned, and it is characterized in that, comprises at least:
One light source is in order to shine this manuscript and to obtain an image light;
One reflecting piece is disposed at this light source place, and is positioned at the opposite side of this manuscript direction of this light source irradiation, and this reflecting piece is selected from a kind of color in redness, green, the blueness, can reflect this light source and strengthen the intensity of light source of this this color of image light;
One reflector group is disposed in the light path of this image light, receives and reflects this image light;
One lens combination is disposed on the light path of this image light, make the reflection of this reflector group and this image light of coming by this lens combination; And
One optical sensor is disposed on the light path of this image light, receives this image light by this lens combination; Wherein this optical sensor has redness, blueness and green color output intensity, and the selection of the color of this reflecting piece is relevant with the color output intensity of this optical sensor.
4. an optic scan module is suitable for a manuscript is scanned, and it is characterized in that, comprises at least:
One light source is in order to shine this manuscript and to obtain an image light;
One reflector group is disposed in the light path of this image light, receives and reflects this image light;
One lens combination, be disposed on the light path of this image light, make the reflection of this reflector group and this image light of coming by this lens combination, this lens combination has at least one lens, have an antireflection coating on one surface of these lens, this antireflection coating is selected from a kind of color in redness, green, the blueness; And
One optical sensor is disposed on the light path of this image light, receives this image light by this lens combination; Wherein this optical sensor has redness, blueness and green color output intensity, and the selection of the color of this antireflection coating is relevant with the color output intensity of this optical sensor.
5. an optic scan module is suitable for a manuscript is scanned, and it is characterized in that, comprises at least:
One light source is in order to shine this manuscript and to obtain an image light;
One reflector group is disposed in the light path of this image light, receives and reflects this image light;
One lens combination is disposed on the light path of this image light, make the reflection of this reflector group and this image light of coming by this lens combination, this lens combination has at least one lens, these lens are selected from a kind of color in redness, green, the blueness; And
One optical sensor is disposed on the light path of this image light, receives this image light by this lens combination; Wherein this optical sensor has redness, blueness and green color output intensity, and the selection of the color of this lens combination is relevant with the color output intensity of this optical sensor.
6. an optic scan module is suitable for a manuscript is scanned, and it is characterized in that, comprises at least:
One light source, this light source have a kind of color in the redness of being selected from, green, the blueness, in order to shine this manuscript and to obtain an image light;
One reflector group is disposed in the light path of this image light, receives and reflects this image light;
One lens combination is disposed on the light path of this image light, make the reflection of this reflector group and this image light of coming by this lens combination; And
One optical sensor is disposed on the light path of this image light, receives this image light by this lens combination; Wherein this optical sensor has redness, blueness and green color output intensity, and the selection of the color of this light source is relevant with the color output intensity of this optical sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02126823 CN1226651C (en) | 2002-07-22 | 2002-07-22 | Optical source colour-adjusting apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02126823 CN1226651C (en) | 2002-07-22 | 2002-07-22 | Optical source colour-adjusting apparatus and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1470896A CN1470896A (en) | 2004-01-28 |
| CN1226651C true CN1226651C (en) | 2005-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02126823 Expired - Fee Related CN1226651C (en) | 2002-07-22 | 2002-07-22 | Optical source colour-adjusting apparatus and method |
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| CN (1) | CN1226651C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4816437B2 (en) * | 2006-01-04 | 2011-11-16 | 日本電気株式会社 | Light source device and liquid crystal display device using the same |
| CN103037171B (en) * | 2011-09-30 | 2015-09-23 | 全友电脑股份有限公司 | Image acquisition module and radiological image reading device thereof |
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| Publication number | Publication date |
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| CN1470896A (en) | 2004-01-28 |
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Owner name: YUDONG PLASM TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHISHEN SCIENCE + TECHNOLOGY CO. LTD. Effective date: 20061215 |
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Granted publication date: 20051109 Termination date: 20110722 |