CN2264937Y - Contact colour image sensor assembly - Google Patents
Contact colour image sensor assembly Download PDFInfo
- Publication number
- CN2264937Y CN2264937Y CN 96221846 CN96221846U CN2264937Y CN 2264937 Y CN2264937 Y CN 2264937Y CN 96221846 CN96221846 CN 96221846 CN 96221846 U CN96221846 U CN 96221846U CN 2264937 Y CN2264937 Y CN 2264937Y
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- light
- led wafer
- optical conductor
- image sensor
- light source
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Abstract
The utility model relates to a contact-type colored image sensor assembly. A light source used by the utility model is formed by the method that an LED wafer set which can emit light with different colors is served as an incandescent body, and the incandescent body is matched with the transmission of an upper light conductor to be combined; when the light source irradiates files to be scanned; the reflected light of the light source focuses light on an image sensing wafer via a cylindrical lens array; with the conversion of photoelectric effect, the strength of light with different colors is converted to an electric signal to be output. The output signal contains the information such as the shape, the shade, etc. of original words and images, and also preserves the information of color.
Description
The utility model relates to a kind of colored contact image sensor assembly, specifically, be to be luminophor with LED (light emitting diode) wafer set that can send different color light, the light source that transmission combined of optical conductor in the cooperation, when light source irradiation was to the file that will scan, its reflected light focused light on the image sensing wafer via the lens pillar row; Utilize photoelectric conversion, make the power of various coloured light be converted to the electric signal mode and export, this output signal has also been preserved the information of color except the data of the shape that contains former character image, depth etc.
Image sensor is just as the mankind " eyes ", is a kind of element with the object image input, if distinguish with the color of image sensor image output then can be divided into two classes: black and white and colour.The black-and-white image sensor utilizes black, white or GTG to describe the characteristic of image only, can't differentiate the color of original image.Its principal element is that light source is that luminophor or luminophor by single wavelength constituted image sensing wafer in the cooperation by white light source; It experiences the power of light only, can't distinguish for the color of different wave length.The chromatic image sensor is quite different, basically be to utilize the luminophor that contains continuous visible spectrum to be light source, the optical filter of different colours and image sensing wafer in the collocation, or with the colored image sensing wafer of white light source cooperation, so just can distinguish different colors, so the chromatic image sensor except the face shaping of possessing former image, the light and shade depth, has also write down the information of color.With respect to the black-and-white image sensor, the application of chromatic image sensor is more extensive.
Image sensor is except distinguishing with the color of image output, and because of the difference of its structure, principle can be distinguished into polytype again, wherein a kind of image input element is the contact image sensor assembly.Traditional contact image sensor assembly is because of being subject to the monochromatic LED light source, only its output signal converted to modes such as black, white, ash and expresses original image; But color that can't represented object.
Fig. 1,2 shows traditional contact image sensor assembly outward appearance, side view.Tradition contact image sensor assembly comprises (one) image sensing substrate: image sensing wafer 45, plain conductor 46, substrate 40 etc.; (2) led array light source 25:LED wafer 20, led array light source substrate 24, translucent cover 26; (3) the lens pillar row 15; (4) glass 10 and (five) modular construction part: pedestal 30, side cover 35 etc.And its working method is referring to the main element side view of Fig. 2 tradition contact image sensor assembly.Led array light source 25 issued lights pass glass 10, expose to want scanning document 50; Also pass glass 10 by the light of wanting scanning document 50 reflection, enter lens pillar row 15, the picture that this lens arrays became is the picture of nothing amplification, thus image sensing wafer 45 also form a line, its required number at least with want scanning document 50 length identical.When lens pillar row 15 imagings focus on image sensing wafer 45 when listing, can convert light signal to photo-signal, see through the transmission of plain conductor 46, this current signal enters substrate 40, send available signal at last, finish the function of this video sensor component.Yet in traditional contact image sensor assembly, light source is a monochromatic LED array 25, and its LED wafer 20 numbers (deciding on sweep length) are generally about 32-42 the A4 size.Because LED wafer 20 numbers are numerous, can't in closely, have high evenness, so need keep distance with scanned document 8mm, and as long as led array light source 25 arbitrary LED wafers 20 damage, this led array light source 25 promptly lacks bright, can make contact-type image sensing assembly output signal mistake occur.This is restriction and the blemishes of traditional contact image sensor assembly the Lights section in application facet.
The purpose of this utility model is to provide a kind of colored contact image sensor assembly, and it has overcome the shortcoming of traditional contact image sensor assembly, can express the color of object.
Colored contact image sensor assembly of the present utility model comprises main structure body pedestal, image sensing substrate, lens pillar row and light source, described lens pillar row 15 are arranged on the pedestal, it is also adjacent with it that described light source is arranged on the side of lens pillar row 15, described image sensing substrate is arranged on the below of described lens pillar row, this image sensing substrate is provided with image sensing wafer, wherein:
Described light source comprises the LED wafer and the LED wafer base of optical conductor, optical conductor pedestal, different color light, and described optical conductor pedestal constitutes the outermost layer of light source, and is provided with the window of a placement optical conductor within it; Described optical conductor is inserted in this window, and exposes light outgoing plane and side, and this light outgoing plane is aimed at the side of column lens arrays; The side of this optical conductor is provided with the LED wafer base; The LED wafer set of different color light is arranged on this LED wafer base, and wherein the electric current LED wafer of different color light of flowing through makes it send different color light; Emitted light enters optical conductor from the side of optical conductor, transmits in optical conductor, and penetrates to described lens pillar row via optical conductor light outgoing plane.
Emit beam and be incident upon on the file that will scan through the lens pillar row, its reflected light focuses light on the image sensing wafer via the lens pillar row, convert the reflected light of different colours to electric signal via photoelectric principle, again that these signals are suitable in addition combination just can obtain the prepossessing appearance of the original.
Adopt colored contact image sensor assembly of the present utility model, can give expression to the color of object, and reduced the number of LED wafer, and light uniformity coefficient height, good reliability, also reduced the volume of assembly.
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.
Fig. 1 is the schematic appearance of traditional contact image sensor assembly.
Fig. 2 is the main element side view of tradition contact video sensor component.
Fig. 3 is a schematic appearance of the present utility model.
Fig. 4 is an assembling synoptic diagram of the present utility model.
Fig. 5 is the optical conductor and the LED wafer base constitutional diagram of light source of the present utility model.
Fig. 6 is a light source assembling synoptic diagram of the present utility model.
Fig. 7 is a main element side view of the present utility model.
The figure number explanation:
10 glass
11 slidies
15 lens pillars row
20 LED wafers
24 led array light source substrates
25 led array light sources
26 translucent covers
30 pedestals
35 side covers
40 substrates
45 image sensing wafers
46 plain conductors
50 files that will scan
61 optical conductors
62 optical conductor light source outgoing planes
63 optical conductor pedestals
64 LED wafer set
65 LED wafer bases
66 LED power leads
67 reflective materials
Referring to Fig. 3,4,7 outward appearance of the present utility model signal, assembling signal and schematic side view.The colored contact image sensor assembly of the utility model, its main element comprises (one) image sensing substrate: image sensing wafer 45, plain conductor 46, substrate 40 etc.; (2) light source: optical conductor 61, optical conductor pedestal 63, LED wafer set 64, LED wafer base 65 etc.; (3) the lens pillar row 15; (4) slide 11 and (five) modular construction part: pedestal 30, side cover 35 or the like.
As shown in above-mentioned figure, these lens pillar row 15 are arranged on the pedestal 30, and the adjacent with it light source of a side setting at lens pillar row 15 is provided with image sensing substrate 40 below these lens pillar row 15, have sensing wafer 45 on this substrate.
About the Lights section, because LED has new development recently on material, as GaN, AlGaInP.... etc., it is many to impel luminous intensity and wavelength coverage all to increase, so utilize the LED wafer of minority, has cooperated optical conductor promptly to can be used in the utility model light source.Fig. 5,6 is a light source assembling synoptic diagram of the present utility model.Its outermost layer is an optical conductor pedestal 63, is provided with the window of a placement optical conductor in this pedestal 63, and this optical conductor 61 is inserted in the window of this pedestal 63, and exposes a light outgoing plane and a side; The side of this light outgoing plane alignment post lens arrays; The optical conductor side is provided with LED wafer base 65; The LED wafer set 64 of different color light is placed on the LED wafer base 65, and electric current enters LED wafer base 65 through LED power lead 66, promotes the LED wafer of different color light to light luminous; So the light that light source sends enters from optical conductor 61 sides, and transmission in optical conductor 61.The characteristic of this optical conductor 61 is that light is only penetrated by optical conductor light outgoing plane 62, has therefore reduced the loss of light scatter; The angle of adjusting outgoing plane 62 in addition is the position of may command optically focused also, as for the uniformity coefficient aspect, adds in optical conductor 61 bottoms that then reflective material 67 utilizes its area, shape to wait and controls the output power of light in this position.Therefore light source also can have good uniformity coefficient in closely, presses close to want scanning object 50 so light source is tried one's best, and the utility model assembly volume has also been dwindled thereupon.
If need stronger light source, except increasing one-sided LED wafer number, also can place second LED wafer base 65, shown in Fig. 5 dotted portion at optical conductor 61 opposite sides.In addition, can place the LED wafer of other different color lights on LED wafer base 65, can make form and aspect more complete as the combination of red (red), green (green), blue (blue), fuchsin (magenta), yellow (yellow), blue or green (cyan), color is abundanter.
As for the working forms of colored contact image sensor of the present utility model, see also the main element side view of the present utility model of Fig. 7.Various LED wafers send different color light on LED wafer set 64, enter optical conductor 61 from optical conductor 61 sides, through optical conductor 61 transmission and after by 62 ejaculations of optical conductor light outgoing plane, light passes slide 11 (as: glass, acryl (acrylic resin) ... Deng transparent substance), expose to and want on the scanning document 50; Light by scanning document 50 reflection also passes slide 11, enters lens pillar row 15, and this lens arrays imaging is not for there being the picture that amplifies, thus image sensing wafer 45 also form a line, as for its required number then at least with want scanning document 50 length identical.The image focu that forms when lens pillar 15 is when image sensing wafer 45 lists, through photoelectric conversion, light signal converts electric signal to, this moment, electric charge saw through the transmission of plain conductor 46, enter substrate 40, send available electric signal at last, the electric signal that corresponds to various coloured light is made up, just contain the information of representing a certain color.
In addition,, add not plate any filter coating on the image sensing wafer 45, therefore can be applicable to monochromatic black and white scanning,, then decide by actual needs as for based on which kind of coloured light owing to can choose different coloured light.
The utility model is not limited to above-described specific embodiment, and the structural change of the various equivalences that those skilled in the art make and remodeling all are included in the scope of the present utility model.
Claims (6)
1, a kind of colored contact image sensor assembly, comprise main structure body pedestal, image sensing substrate, lens pillar row and light source, described lens pillar row (15) are arranged on the pedestal, it is also adjacent with it that described light source is arranged on the side of lens pillar row (15), described image sensing substrate is arranged on the below of described lens pillar row, this image sensing substrate is provided with image sensing wafer, it is characterized in that:
Described light source comprises the LED wafer group (64) and the LED wafer pedestal (65) of optical conductor (61), optical conductor pedestal (63), different color light, described optical conductor pedestal (63) constitutes the outermost layer of light source, and is provided with the window of a placement optical conductor within it; Described optical conductor (61) is inserted in this window, and exposes light outgoing plane and side, and this light outgoing plane is aimed at the side of column lens arrays (15); The side of this optical conductor is provided with LED wafer pedestal (65); The LED wafer group (64) of different color light is arranged on this LED wafer pedestal (65), and wherein the electric current LED wafer of different color light of flowing through makes it send different color light; Emitted light enters optical conductor from the side of optical conductor, transmits in optical conductor, and penetrates to described lens pillar row (15) via optical conductor light outgoing plane.
2, colored contact image sensor assembly as claimed in claim 1 is characterized in that the LED wafer of described different color light comprises the LED wafer of three kinds of coloured light of red, green, blue.
3, colored contact image sensor assembly as claimed in claim 1 is characterized in that, that the LED wafer of described different color light comprises is red, yellowish green, the LED wafer of blue three kinds of coloured light.
4, colored contact image sensor assembly as claimed in claim 1 is characterized in that, that the LED wafer of described different color light comprises is red, orange, green, the LED wafer of Lan Si kind coloured light.
5, colored contact image sensor assembly as claimed in claim 1 is characterized in that, described LED wafer is divided into two groups, places described optical conductor both sides respectively.
6, colored contact image sensor assembly as claimed in claim 1 is characterized in that, only lights the LED wafer of single kind of coloured light, and described light source output monochromatic light is to described lens pillar row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96221846 CN2264937Y (en) | 1996-09-02 | 1996-09-02 | Contact colour image sensor assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96221846 CN2264937Y (en) | 1996-09-02 | 1996-09-02 | Contact colour image sensor assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2264937Y true CN2264937Y (en) | 1997-10-15 |
Family
ID=33901620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96221846 Expired - Fee Related CN2264937Y (en) | 1996-09-02 | 1996-09-02 | Contact colour image sensor assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2264937Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100362370C (en) * | 2000-03-01 | 2008-01-16 | 日本板硝子株式会社 | Optical guider and linear luminating device |
| CN100463484C (en) * | 2001-03-29 | 2009-02-18 | 松下电器产业株式会社 | Image load in device, light source, light source element, microlens and manufacturing method of microlens |
-
1996
- 1996-09-02 CN CN 96221846 patent/CN2264937Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100362370C (en) * | 2000-03-01 | 2008-01-16 | 日本板硝子株式会社 | Optical guider and linear luminating device |
| CN100463484C (en) * | 2001-03-29 | 2009-02-18 | 松下电器产业株式会社 | Image load in device, light source, light source element, microlens and manufacturing method of microlens |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |