CN102348036A - Method for manufacturing light source of contact image sensor module - Google Patents
Method for manufacturing light source of contact image sensor module Download PDFInfo
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- CN102348036A CN102348036A CN2010102465344A CN201010246534A CN102348036A CN 102348036 A CN102348036 A CN 102348036A CN 2010102465344 A CN2010102465344 A CN 2010102465344A CN 201010246534 A CN201010246534 A CN 201010246534A CN 102348036 A CN102348036 A CN 102348036A
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Abstract
The invention provides a method for manufacturing a light source of a contact image sensor module. The method comprises the following steps of: providing a primary light source, wherein the primary light source has lattice points and a point light source; removing a plurality of lattice points of a preset length from the primary light source; cutting the primary light source to form a first cut section light source and at least one second cut section light source; and combining the second cut section light source and another point light source. By the method, the aim of easily manufacturing light sources with different sizes can be fulfilled.
Description
[technical field]
The present invention relates to a kind of contact image sensor module (Contact Image Sensor Module, CISM), especially a kind of method of making the light source of contact image sensor module.
[background technology]
Sensing component when the current scanline device scans as it with contact image sensor module mostly.Contact image sensor module mainly is made up of light source, lens pillar and transducer.When scanner begins to scan; Light source arrives scanning object or file to be scanned with the irradiate light that is produced; Behind the light by scanning object or file to be scanned reflection varying strength; Like a small amount of light of dark regional reflex; A large amount of light etc. are then reflected in bright zone; Lens pillar again with the light focusing of reflection varying strength to the wide sensor of scanning breadth on; By sensor the light of varying strength is converted to analog electrical signal; This analog electrical signal is directly proportional with light intensity; At last analog electrical signal is converted to behind the digital electric signal again via suitable image processing, can produces the information of scanning object or file to be scanned.
The quality of scan-image depends on the quality of contact image sensor module, and as stated, contact image sensor module is with light source irradiation to scanning object or file to be scanned, produce scan-image by reflection ray, so light source seems quite important.The manufacture of present light source; At first, carry out the light uniformity (Photo Response Non-Uniformity, PRNU) simulation according to the required dimension of light source of client; After analog result reaches predetermined dimension, the site figure (Pattern) of simulation is carried out die processing after publishing picture.After the completion of processing, whether the measurement processed finished products is suitable with the site figure of simulation.The site figure of confirming processed finished products and simulation quite after; Die is installed the capable again patrix of mould to be penetrated; And the parameter of adjustment ejaculator; After the ejaculator parameter reaches the site figure replication rate more than 95%; With the finished product that penetrates is light guide plate (Light Guide); Be mounted on the light source base (Housing) of design, accomplish the manufacturing of light source.To make the light sources of accomplishing again and install to contact image sensor module this moment, carry out the light uniformity whether the real machine checking reaches predetermined dimension.If the real machine checking does not reach the light uniformity of predetermined dimension, then must restart from light uniformity simulation the earliest, repeat above-mentioned steps till the real machine checking reaches the light uniformity of predetermined dimension.
Yet the shortcoming of the light source of above-mentioned existing manufacturing contact image sensor module is; Whole flow process can only design a kind of size; If desired during the light source of special size, must simulate, publish picture from the light uniformity, flow process retests such as die processing, patrix are penetrated, be mounted to light source base, be assembled into contact image sensor module, real machine checking are till reaching specification.Said process need expend quite high cost, comprise relevant optical simulation software (for example traspro light tool) of purchase and standard light briliancy and measure appearance expense, mould die sinking expense etc., and the exploitation processing procedure is loaded down with trivial details, spend many time verifyings.
Therefore need a kind of solution be proposed to the problems referred to above.
[summary of the invention]
Because the problem of above-mentioned prior art, the present invention's purpose is exactly that a kind of method of making the light source of contact image sensor module is being provided, and can produce the light source of the contact image sensor module of required size with low cost and simple process flow.
The method of the light source of the manufacturing contact image sensor module according to the present invention comprises the following step:
(1) main light source is provided, the surface of this main light source has the site and a side has a point-source of light;
(2) site of several predetermined lengths of removal main light source makes and forms several no dot area on the main light source;
(3) cut main light source, form one first section of cutting light source and at least one second section of cutting light source, wherein the both sides of first section of the cutting light source and second section of the cutting light source respectively comprise a no dot area, and first section of the cutting light source comprises point-source of light; And
(4) second section of the cutting light source is combined with another point-source of light.
Except that above-mentioned steps, the method for the light source of the present invention's manufacturing contact image sensor module more comprises the following step:
(5) first section of the cutting light source and second section of the cutting light source are assembled in a contact image sensor module respectively; And
(6) measure the light uniformity of each contact image sensor module.
The mode of above-mentioned removal site for example utilizes adhesive tape to attach to the site on the predetermined length.In another embodiment, can utilize the mode that a site die is polished to remove the site.
Above-mentioned predetermined length comprises 6 millimeters to 10 millimeters scope, and wherein preferable value is 8 millimeters.
Compared with prior art; After the method that the present invention makes the light source of contact image sensor module can cut standard size light source at a low price; Produce the light source of required size, and exempt expensive time-consuming flow processs such as simulation in the prior art, die sinking, checking.
[description of drawings]
Accompanying drawing 1 is the method flow diagram of the light source of contact image sensor module constructed in accordance;
Accompanying drawing 2A is the sketch map of the light source of contact image sensor module constructed in accordance to accompanying drawing 2D; And
Accompanying drawing 3 is the sketch map of contact image sensor module.
[embodiment]
Please consult accompanying drawing 1 and accompanying drawing 2A in the lump to accompanying drawing 2D; Accompanying drawing 1 is the method flow diagram of the light source of contact image sensor module constructed in accordance, and accompanying drawing 2A is the sketch map of the light source of contact image sensor module constructed in accordance to accompanying drawing 2D.The present invention's method comprises the following step:
Among the step S10, a main light source 20 is provided, the surface of this main light source 20 has site 28 and a side has a point-source of light 22, shown in accompanying drawing 2A.Point-source of light 22 is such as but not limited to light-emitting diode.Main light source 20 is of a size of the cheapest standard size light source of price, A4 size for example, and its length is 218 millimeters (Millimeter).
Among the step S20, remove several predetermined lengths L site 28 upward of main light source 20, make and form several no dot area 24 on the main light source 20.Purpose as for removing site 28 will have more detailed explanation in after a while.The result who removes the back is shown in accompanying drawing 2B.The mode that the mode view point 28 that remove site 28 forms can have different selections.When site 28 forms with the mode of screen painting, can stick the site 28 on the predetermined length L with adhesive tape, reach the purpose that forms no dot area 24.When site 28 forms with the mode of ejection formation; The site die (not shown) that will produce site 28 upward polishes at corresponding predetermined length L place; Promptly do not have the site on the predetermined length L of the main light source 20 that then produces, reach the purpose that forms no dot area 24.
In accompanying drawing 2B, the size of each predetermined length L is for equating that the size of also visual certainly actual demand adjustment predetermined length L is unequal, does not promptly have varying in size of dot area 24.Scope as for predetermined length L is included between 6 millimeters to 10 millimeters, and in the preferred embodiment, predetermined length L is 8 millimeters.
Among the step S30; The place cuts main light source 20 along accompanying drawing 2B dotted line; The result who cuts the back is shown in accompanying drawing 2C; Form first section of the cutting light source 30 and second section of the cutting light source 40; Wherein the both sides of first section of the cutting light source 30 and second section of the cutting light source 40 respectively comprise a no dot area 24, and first section of the cutting light source 30 comprises point-source of light 22.A4 with 218 millimeters of above-mentioned length is of a size of example, it can be cut into the A8 size of 54 millimeters of A6 size and the length of 108 millimeters of length, can obtain the light source of A6 size and two kinds of different lengths of A8 size.The collocation mode that another kind cuts can be cut into the A4 size of 218 millimeters of length the A8 size of 54 millimeters of A5 size and the length of 140 millimeters of length, can obtain the light source of A5 size and two kinds of different lengths of A8 size.Because A4 is of a size of the standard sources size of the contact image sensor module of industry use, except being cut into above-mentioned A5, A6 or A8 size light source, also can mass-produced standard size be cut into the light source of random length according to customer demand.
At present industry when producing the standard-sized main light source 20 of accompanying drawing 2A, is used the technology of removing the site a large amount of, and promptly whole main light source 20 surfaces are covered with the site.Therefore if do not remove earlier accompanying drawing 2B predetermined length L site 28 and after directly main light source 20 being cut, can produce serious scattering phenomenon cutting side, it is bright excessively promptly to cut the sidelight line.In fact, solve and to cut the scattering phenomenon that side produces and the light sources after cutting can be contained in the contact image sensor module, and then paste optical attenuator thin-film material such as diffusion sheet, cut the problem of sidescattering phenomenon with solution in the top that cuts side.Yet the method for pasting diffusion sheet must be passed through test, obtains the size and the light transmittance of required diffusion sheet, attaches to must to finely tune with the light transmittance to diffusion sheet again through the test of the light uniformity after cutting side top.Therefore again, diffusion sheet is to stick with manual type to form, and is attached on to cut the side top when error is arranged, and also can the effect that suppress scattering phenomenon be given a discount.
Problem for fear of above-mentioned use diffusion sheet generation; The present invention removes the site 28 on the predetermined length L earlier before cutting; After main light source 20 was cut into first section of the cutting light source 30 and second section of the cutting light source 40, the both sides of first section of the cutting light source 30 and second section of the cutting light source 40 did not have the problem generation that dot area 24 can prevent scattering phenomenon.In brief; No dot area 24 has the effect identical with sticking diffusion sheet; But the step that need not pass through test, the size of obtaining required diffusion sheet and light transmittance and the light transmittance of diffusion sheet is finely tuned, the error that can avoid manual work to stick again causing and save the cost that uses diffusion sheet.Therefore, the mode that forms no dot area 24 is easier and can reduce production costs than the mode of sticking diffusion sheet.
Among the step S40, shown in accompanying drawing 2D, second section of the cutting light source 40 is combined with another point-source of light 26.Because first section of the cutting light source 30 has the point-source of light 22 of main light source 20; So do not need additionally to combine with another point-source of light 26; The point-source of light 22 that after cutting, does not have main light source 20 as for second section of the cutting light source 40; Therefore must additionally combine with another point-source of light 26; With as the light source, restriction is not arranged as for which side that is combined in second section of the cutting light source 40.In one implemented to stand, another point-source of light 26 was a diode package, can use the prior art manufacturing to form, for the common knowledge in the affiliated field, so repeat no more.
Be noted that the present invention is not limited to cut into two sections, can cut into multistage according to actual demand.To cut into three sections is example, can form one section first section of cutting light source 30 and two section second section of cutting light source 40, wherein has only two section second section of cutting light source 40 to need additionally to combine with another point-source of light 26.
In one embodiment, second cut disconnected light source 40 and combine more to comprise the following step with another point-source of light 26:
One viscose is provided;
Viscose is attached to one of second section of the cutting light source 40 side; And
Another point-source of light 26 is attached to the viscose side of second section of the cutting light source 40.
Again among another embodiment, second cuts disconnected light source 40 and another point-source of light 26 for utilizing the mode secure bond of mutual buckle.Yet combination is not limited to above-mentioned sticking or the buckle mode.
Among the step S50, first section of the cutting light source 30 and second section of the cutting light source 40 are assembled in a contact image sensor module respectively.
Among the step S60, measure the light uniformity of each contact image sensor module, whether test reaches required specification.
First section of the cutting light source 30 and second section of the cutting light source 40 have light transmission, and its effect is to convert point-source of light 22 and another point-source of light 26 into line source respectively.
See also accompanying drawing 3, be the sketch map of contact image sensor module 50.Contact image sensor module 50 comprises several lens 52, first section of the cutting light source 30 of accompanying drawing 2D and the transducer (not shown) of lens 52 belows that is contained in the pedestal 54.Contact image sensor module 50 can be applicable to optical devices such as multifunctional paper feeding machine, scanner, facsimile machine or photocopier.
The present invention compares with known techniques, has advantage: after (a) can standard-sized main light source being cut according to demand, form the light source of multistage different size again behind the assembling points light source, can save the processing procedure of continuous checking, die sinking, significantly reduce production costs; (b) mode of removing with the site suppresses light source two sidescattering problems and can simplify processing procedure, save and use the cost and the people of diffusion sheet to stick the error that causes.
More than this only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be considered as protection scope of the present invention.
Claims (10)
1. a method of making the light source of contact image sensor module is characterized in that, comprises:
(1) main light source is provided, the surface of this main light source has the site and a side has a point-source of light;
(2) remove the site of several predetermined lengths of this main light source, make and form several no dot area on this main light source;
(3) cut this main light source, form one first section of cutting light source and at least one second section of cutting light source, wherein the both sides of this first section of cutting light source and this second section of cutting light source respectively comprise a no dot area, and this first section of cutting light source comprises this point-source of light; And
(4) this second section of cutting light source is combined with another point-source of light.
2. method according to claim 1 is characterized in that, more comprises:
(5) this first section of cutting light source and this second section of cutting light source are assembled in a contact image sensor module respectively; And
(6) measure the light uniformity of each contact image sensor module.
3. method according to claim 1 is characterized in that, utilizes adhesive tape to attach on these predetermined lengths and removes the site.
4. method according to claim 1 is characterized in that, utilizes the mode of a site die polishing is removed the site.
5. method according to claim 1 is characterized in that, the equal and opposite in direction of each predetermined length or unequal.
6. method according to claim 1 is characterized in that each predetermined length comprises 6 millimeters to 10 millimeters scope.
7. method according to claim 1 is characterized in that, each predetermined length is 8 millimeters.
8. method according to claim 1 is characterized in that, this point-source of light and this another point-source of light are light-emitting diode.
9. method according to claim 1 is characterized in that, in step (4), more comprises:
One viscose is provided;
This viscose is attached to one of this second section of cutting light source side; And
This another point-source of light is attached to the viscose side of this second section of cutting light source.
10. method according to claim 1 is characterized in that, in step (4), more comprises:
With this second section of cutting light source and the mutual snap fit of this another point-source of light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102465344A CN102348036A (en) | 2010-07-29 | 2010-07-29 | Method for manufacturing light source of contact image sensor module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102465344A CN102348036A (en) | 2010-07-29 | 2010-07-29 | Method for manufacturing light source of contact image sensor module |
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| CN102348036A true CN102348036A (en) | 2012-02-08 |
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| CN2010102465344A Pending CN102348036A (en) | 2010-07-29 | 2010-07-29 | Method for manufacturing light source of contact image sensor module |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2489191Y (en) * | 2001-06-04 | 2002-05-01 | 山东华菱电子有限公司 | Small bar-type light source for contact image sensor |
| CN101071228A (en) * | 2006-05-12 | 2007-11-14 | 胜华科技股份有限公司 | Backlight module |
| CN101201508A (en) * | 2006-11-07 | 2008-06-18 | 三星电子株式会社 | Back-light unit and liquid crystal display having the same |
| TW201027156A (en) * | 2009-01-13 | 2010-07-16 | Asia Tech Image Inc | Method of adjusting compactness of a light source for use in a contact image sensor module |
-
2010
- 2010-07-29 CN CN2010102465344A patent/CN102348036A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2489191Y (en) * | 2001-06-04 | 2002-05-01 | 山东华菱电子有限公司 | Small bar-type light source for contact image sensor |
| CN101071228A (en) * | 2006-05-12 | 2007-11-14 | 胜华科技股份有限公司 | Backlight module |
| CN101201508A (en) * | 2006-11-07 | 2008-06-18 | 三星电子株式会社 | Back-light unit and liquid crystal display having the same |
| TW201027156A (en) * | 2009-01-13 | 2010-07-16 | Asia Tech Image Inc | Method of adjusting compactness of a light source for use in a contact image sensor module |
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Application publication date: 20120208 |