CN100342250C - Manufacturing method of optical conduction array - Google Patents
Manufacturing method of optical conduction array Download PDFInfo
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- CN100342250C CN100342250C CNB2005100076675A CN200510007667A CN100342250C CN 100342250 C CN100342250 C CN 100342250C CN B2005100076675 A CNB2005100076675 A CN B2005100076675A CN 200510007667 A CN200510007667 A CN 200510007667A CN 100342250 C CN100342250 C CN 100342250C
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- rod lens
- cementing agent
- substrate
- platen
- battle array
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Abstract
To enable efficient, low cost, and stable production of a high-precision rod lens array by precisely applying an adhesive to a substrate for the array or a rod lens with the prescribed thickness in the production process of the rod lens array. The adhesive coating device 1 is an adhesive coating device for applying an adhesive to the substrate 14 or the rod lenses arranged on the substrate, and comprises a nozzle 6 for discharging the adhesive with the prescribed pressure, and a transfer roller 10 disposed so as to face the discharge opening of the nozzle, sticking the adhesive discharged from the nozzle to its outer peripheral surface, and transferring the stuck adhesive to the substrate or the rod lenses arranged on the substrate. (C)2006,JPO&NCIPI.
Description
Technical field
The invention relates to the manufacture method of optical conduction array, and the cementing agent applying device and the cementing agent coating method that are suitable for this manufacture method, more detailed saying so about the arranged side by side manufacture method of the optical conduction array of the cylindrical bar type lens of configuration between 2 plate bases, and in the manufacture process of rod lens battle array for substrate or for being configured in the cementing agent applying device and the cementing agent coating method of the rod lens adhesive stripe-coating on the substrate.
Background technology
Known have the cylindrical bar type lens of two end faces through mirror ultrafinish as one of micro lens.This rod lens is except that single application, the a plurality of rod lenses of the handlebar rod lens battle array parts form of integration that forms a line also, for example, the rod lens battle array that between 2 plate bases, bonds a plurality of rod lenses and form, be applied in printer, facsimile recorder, scanner, manual scanner etc. as imageing sensor with optics, or as charging to device application at the LED printer that uses led light source (light emitting diode), use the liquid crystal printer of liquid crystal cell, use in the EL print apparatus of EL element.
Known manufacture method as this rod lens battle array (for example, open flat 9-90105 communique with reference to the spy), for example, be to arrange rod lens on the section bar of parallel formation at regular intervals at a plurality of shallow slots that the rod lens of packing into is used, configuration resin sheet and the 1st substrate above the rod lens of arranging on the section bar, then by resin sheet furnishing thickness state is pressurizeed from the top, rod lens is become in resin partly imbed state, and transfer to the 1st substrate and make arrange body from section bar, then again this rod lens arrange body is turned around, configuration resin sheet and the 2nd substrate above it, under the resin sheet furnishing thickness state from above the pressurization, rod lens is become in resin imbed state fully, with resin rod lens is fixed on the manufacture method of the rod lens battle array between the 1st substrate and the 2nd substrate again.
In recent years, for optical conduction array in the thin diameter rod lens of the use of popularizing, as baseplate material is to use resin plate, under the situation of using resinous substrate, between substrate and resin sheet and form bubble, goods easily produce flexural deformation in the hardening process of resin sheet, finally have the problem that utilization rate of raw materials reduces.
Also have, known coating method as the cementing agent of making this rod lens battle array has: the many rod lenses of being cut into certain-length are arranged in parallel between 2 plate bases, filling adhesive between 2 plate bases and rod lens is bonded and fixed at method (being that the spy opens clear 61-55610 communique with reference to Patent Document 1 for example) between the substrate to rod lens; Be formed with adhesive stripe-coating on the substrate of groove on the surface, rod lens is inserted in this groove, then rod lens is bonded and fixed at method (being that the spy opens flat 5-333217 communique with reference to Patent Document 2 for example) between the substrate; Also have, between substrate and rod lens, sandwich the cementing agent of sheet, rod lens is bonded and fixed at method (being that the spy opens flat 9-90105 communique with reference to Patent Document 3 for example) between the substrate.
But, the method of Patent Document 1 is owing to need the pre-bonding operation and the filling procedure of substrate and rod lens, so have the high problem of manufacturing cost, when arranging rod lens, to arrange with the certain intervals that is provided with between rod lens, when filling adhesive, just the problem that precision reduces of arranging is arranged, have again, when filling adhesive, it is just long that pressure relief value is set the low then filling time, opposite pressure relief value is set higher then the filling and is just had part formation gas blanket soon, so the difficult problem of decompression control is arranged.
Adhesive stripe-coating in the groove that the method for Patent Document 2 need form on substrate, because adhesive stripe-coating is had any problem equably in groove, so draw the problem of quality assurance difficulty because of the variation in thickness of the rod lens battle array made, also have, for forming groove at substrate, the thickness of substrate is adjusted difficult problem.
When if the method sheet form adhesive of Patent Document 3 to each other can homogeneous sandwich overlappingly, because of the variation in thickness of the rod lens battle array made, so the problem of quality assurance difficulty.Also have, if use the high viscosity resins of homogeneous coating, when imbedding the rod lens pressurization in the cementing agent, because of the thickness and precision and the thickness state of sheet form adhesive also has the possibility that produces the part gas blanket, so the problem of quality assurance difficulty is also arranged.
Or the method for Patent Document 3,, time-consuming in the application roll forming process because of pressurization while driving out of under the condition that gas slowly pressurizes from the end, also have, for example under the situation of using diameter as the rod lens below the 0.4mm, the rod lens battle array of manufacturing might produce crooked problem.
As the direct method of adhesive stripe-coating in rod lens of the also useful roller coating of other general adhesive stripe-coating methods.But, this method is because be in the side of rod lens adhesive stripe-coating, so there is rod lens to arrange the problem of loosing and collapsing, when using plastics rod lens, the problem that is damaged is arranged because of cementing agent rod lens with high temperature, also have the coating precision and the difficult problem of discharge rate control of cementing agent.
On the other hand, in recent years rod lens battle array performance there is higher requirement.For realizing more high-performance, it is high and the rod lens battle array of homogeneous thickness is arranged just to be necessary to make the arrangement precision of each rod lens that constitutes the rod lens battle array, therefore, easy, and the exploitation of manufacture method that can satisfy the rod lens battle array of these requirements expected.
The present invention develops in view of these viewpoints.
At first, first purpose of the present invention just is to provide the manufacture method of particularly making optical conduction array of the rod lens low-cost and high-precision of thin diameter.
So second purpose of the present invention just answer in that above-mentioned requirements is finished, the manufacturing process in rod lens by the cementing agent of specific thickness is coated in accurately battle array with substrate or rod lens on, thereby for efficiently, cheap, stable making the coating method that high-precision rod lens provides cementing agent applying device and cementing agent.
Summary of the invention
About first purpose of the present invention.
Inventor of the present invention finds, used resin system substrate surface is not smooth, because of there is recess in its surface, under the state of configuration resin sheet and substrate above the rod lens of arranging on the section bar from above pressurization, rod lens being made when in resin, partly imbedding state, be formed with bubble at this recess.
Yet, replacing resin sheet and use cementing agent as the cementing agent that makes substrate and rod lens integration, make and separate the cementing agent applicator surface that predetermined distance is coated with the substrate of cementing agent and dispose towards the top, and state with configuration rod lens above it, substrate is pressed in the rod lens from the below, so just can prevent that bubble from producing, can also reduce the goods bending that is caused by the cementing agent hardening stress, this finds the work that the present invention just finishes.
Optical conduction array manufacture method according to the present invention is to provide layout circle cylindricality rod lens arranged side by side between 2 plate bases is characterized in that it has: the operation that pre-fixes that disposes a plurality of rod lenses on the surface of last platen side by side; The substrate that is coated with cementing agent separating predetermined distance at a face be configured in make this cementing agent applicator surface towards above and on above-mentioned arrangement step below the platen; Aforesaid substrate is pressed in the rod lens pre-fix platen on above-mentioned, then aforesaid substrate is bonded in bonding operation in the above-mentioned rod lens.
According to this structure, because the substrate of adhesive stripe-coating is pressed in rod lens from the below by the interval that separates regulation up face, so even on substrate, there is recess also to be difficult to form bubble, and, the distortion that causes because of the hardening stress of cementing agent reduces, and qualification rate improves.Also have, owing to be end face adhesive stripe-coating at substrate, so be difficult to take place dropping of cementing agent, thus low viscous cementing agent can be used.
According to other ideal styles of the present invention, the pre-fixing of rod lens can rely on form from surface that a plurality of arrangement grooves and pore produce at top board absorption carry out.
Other good modes according to the present invention, the big 10 μ m of the mean diameter～20 μ m of the gap ratio rod lens of groove are arranged in setting.
Also have, according to other ideal styles of the present invention, afore mentioned rules is set at 0.5mm～2mm at interval, and cementing agent is by the coating of band shape.
According to this structure, the width that forms between the cementing agent coating part is that the space of 0.5mm～2mm has as the function of avoiding " hold " of unnecessary cementing agent, when stable inhibition bubble produces operation, internal stress in the time of also can making the cementing agent sclerosis disconnects, thereby can reduce distortion the qualification rate of end article is improved.
According to other ideal styles of the present invention, the above-mentioned platen of going up has spinfunction, the configuration of above-mentioned rod lens and pre-fix operation be the surface of platen on above-mentioned towards above state under carry out, and in above-mentioned bonding process be the surface of platen on above-mentioned towards below state under carry out.
According to this structure, owing to, therefore just can make the rod lens battle array with little space with making the platen rotation that the surface direction of the last platen of configuration rod lens is changed.
According to this structure, just can provide the manufacture method that is specially adapted to make optical conduction array with the rod lens low-cost and high-precision ground of thin diameter.
About second purpose of the present invention.
Achieve the above object for finishing, apply for inventor of the present invention carry out all tests and repeatedly research found that as the low reason of rod lens battle array optical property be when imbedding in the cementing agent to rod lens pressurization, or when the substrate that is coated with cementing agent being pressurizeed and be bonded in the rod lens that is arranged on the substrate, there is gas blanket to produce, and the rod lens that causes because of the thickness spot of cementing agent arranges precision and reduces, and promoted of the present invention finishing according to this discovery.
According to cementing agent applying device provided by the invention is cementing agent applying device for adhesive stripe-coating in the substrate or the rod lens of arranging above the substrate, it is characterized in that it possesses and has: the nozzle of discharging cementing agent with authorised pressure; Configuration relative with this nozzle direction, make the cementing agent of discharging from this nozzle attached to outer circumference surface, and the cementing agent that this adheres to transferred to substrate or the transferring roller of the rod lens of on substrate, arranging.
Utilize this structure, cementing agent can be coated in above substrate etc. accurately.
Also having, is to be the cementing agent applying device at the coating of substrates cementing agent according to cementing agent applying device provided by the invention, it is characterized in that it disposes: the base plate supports plate with resilient substrate loading surface; Facing to the aforesaid substrate that is loaded in the aforesaid substrate loading surface, discharge the nozzle of cementing agent at authorised pressure; The driving mechanism that aforesaid substrate back up pad and said nozzle are relatively moved; Reach configuration aforesaid substrate back up pad with this, the top of said nozzle is contacted with the surface of the substrate that is loaded in the aforesaid substrate loading surface.
Utilize this structure, cementing agent can be coated on the substrate accurately.
According to other ideal styles of the present invention, the structure of said nozzle be have that formation is left certain distance mutually and the discharge of disposing with 2 jet elements of slit and the shim that between these 2 jet elements, disposes, above-mentioned shim has makes the structure of cementing agent by 1 or the coating of many strips.
Utilize this structure, just can adjust the discharge rate and the discharge state of cementing agent accurately with the thickness that changes shim, the simple operations of shape.
According to other ideal styles of the present invention, said nozzle has 2 jet elements that leave certain distance mutually and dispose, and makes above-mentioned 2 jet elements have the height and position on different tops.The top that is positioned at transferring roller sense of rotation upstream jet element on one side is configured in the below.Also have, cementing agent directly is being coated under the situation of substrate from nozzle, the top that is positioned at coating direction downstream jet element on one side is configured in the below.
Utilize this structure,, just can control the discharge rate of cementing agent accurately with the simple operations of the relative height of adjusting jet element.
Utilize other ideal styles of the present invention, the cementing agent pressure of discharging from said nozzle is in the scope of 0.05～1MPa.
Utilize other ideal styles of the present invention, the width of above-mentioned slit is in 50～500 mu m ranges.
Utilizing other ideal styles of the present invention, from above-mentioned transferring roller to aforesaid substrate or to the rod lens of disposing at substrate, is from said nozzle in 10～50mm/ scope of second to the transfer velocity of the cementing agent of aforesaid substrate perhaps.
Utilizing other ideal styles of the present invention, is in the scope of 20～100 μ m to aforesaid substrate or to the thickness of rod lens transfer of disposing on the substrate or adhesive stripe-coating.The scope of 20～100 μ m is more satisfactory when making one deck rod lens, and the scope of 100～200 μ m is more satisfactory during two-layer rod lens.
Utilize other ideal styles of the present invention, to the thickness error of the cementing agent of the transfer of the aforesaid substrate or the rod lens of disposing on the substrate or coating be ± 5 μ m in.
The cementing agent coating method that other modes according to the present invention provide is to be substrate or the cementing agent coating method in the rod lens of arranging on the substrate, it is characterized in that it possesses and has: the discharge operation of discharging cementing agent under authorised pressure from nozzle; The cementing agent of discharging from said nozzle with the speed of regulation in accordance with regulations width and thickness attached to the operation of adhering to of the outer circumference surface of transferring roller; Attached to the cementing agent of the outer circumference surface of above-mentioned transferring roller in accordance with regulations speed transfer to substrate surface or the transfering process of the rod lens of on substrate, disposing.
According to other modes of the present invention, the cementing agent coating method that provides is to be the cementing agent coating method at the coating of substrates cementing agent, it is characterized in that it possesses and has: the operation of device aforesaid substrate and the top of the nozzle of discharge cementing agent is contacted with the surface of aforesaid substrate on the aforesaid substrate device surface of base plate supports plate with resilient board device face, discharge cementing agent on one side from this nozzle, above-mentioned back up pad and nozzle are relatively moved on one side, in the operation of device above-mentioned cementing agent of coating on the surface of the substrate of above-mentioned back up pad.
According to the present invention, can be provided in the manufacturing process of rod lens battle array, by the cementing agent of specific thickness being coated in accurately battle array, and can efficient, cheap, stably make the cementing agent applying device and the cementing agent coating method of high-precision rod lens battle array with in substrate or the rod lens.
The diagram simple declaration
Fig. 1 is a summary stereographic map of using the part of the rod lens battle array that the rod lens battle array manufacture method of desirable embodiment of the present invention makes.
Fig. 2 is the three-dimensional pattern figure that is illustrated in the former board manufacturing apparatus structure of using in the manufacture method of embodiments of the present invention of rod lens battle array.
Fig. 3 is the figure of the rod lens battle array manufacture method of explanation embodiments of the present invention.
Fig. 4 is the figure of the rod lens battle array manufacture method of explanation embodiments of the present invention.
Fig. 5 is the figure of the rod lens battle array manufacture method of explanation embodiments of the present invention.
Fig. 6 is the figure of the rod lens battle array manufacture method of explanation embodiments of the present invention.
Fig. 7 is the figure of the rod lens battle array manufacture method of explanation embodiments of the present invention.
Fig. 8 is the figure of the rod lens battle array manufacture method of explanation embodiments of the present invention.
Fig. 9 is the figure of the rod lens battle array manufacture method of explanation embodiments of the present invention.
Figure 10 is the figure of the rod lens battle array manufacture method of explanation embodiments of the present invention.
Figure 11 is the figure of the rod lens battle array manufacture method of explanation embodiments of the present invention.
Figure 12 is the summary structural drawing of determinator of resolution (MTF) of the rod lens battle array of usefulness in embodiments of the present invention.
Figure 13 is the chart of measurement result of the bridge of expression grid images.
Figure 14 is the summary structural drawing of crooked determinator of the rod lens battle array of usefulness in embodiments of the present invention.
Figure 15 is the tactic pattern figure of the cementing agent applying device of expression embodiments of the present invention.
Figure 16 is the exploded perspective view of the discharge nozzle structure of cementing agent applying device among Figure 15.
Figure 17 is the mode chart of the structure on discharge nozzle top among expression Figure 16.
Figure 18 is the mode chart of other structures of the cementing agent applying device of expression embodiment of the present invention.
Figure 19 is the mode chart of apex structure of the discharge nozzle of expression Figure 18 cementing agent applying device.
Embodiment
Manufacture method about optical conduction array.
Describe the manufacture method of the rod lens battle array (optical conduction array) of desirable embodiment in detail by figure.At first explanation utilizes the structure of the rod lens battle array 1 that the manufacture method of the rod lens battle array of desirable embodiment of the present invention makes.Fig. 1 is the part summary stereographic map that expression utilizes the rod lens battle array 1 that the manufacture method of the rod lens battle array of desirable embodiment of the present invention makes.
As shown in Figure 1, in this rod lens battle array 1, between 2 plate bases 2,4, dispose the columnar rod lens 6 of most bars side by side.Filling adhesive 8 between substrate 2,4 and each rod lens 6 is fixed between the substrate 2,4 each rod lens 6.
Contain carbon black, the phenoplast of opacifiers such as dyestuff (phenolic resin), ABS resin, epoxy resin, the plate of propenyl etc. for substrate 2,4 general application.
As the plastic material that constitutes rod lens, glass transition temperature Tg is being more satisfactory more than 60 ℃, crosses when low when the glass transition temperature, may cause the thermotolerance deficiency of rod lens 1, also can make the selection that is filled in inner cementing agent 8 difficulty that becomes.
Generally use polymethylmethacrylate specifically, the multipolymer of methyl methacrylate and other monomers.Can give an example out 2 as other monomers, 2,3,3-tetrafluoro propyl group (methyl) acrylate, 2,2,3,3,4,4,5,5-octafluoro amyl group (methyl) acrylate, 2,2,3,4,4,4-hexafluoro butyl (methyl) acrylate, 2,2,2---fluoro-alkyl (methyl) acrylate (refractive index n=1.37～1.44) of trifluoroethyl (methyl) acrylate etc., refractive index be (methyl) acrylics of 1.43～1.62 for example, (methyl) ethyl acrylate, phenyl (methyl) ETHYL CYANOACRYLATE, benzyl (methyl) ETHYL CYANOACRYLATE, hydroxy alkyl (methyl) ETHYL CYANOACRYLATE, ethylene glycol (methyl) ETHYL CYANOACRYLATE, trimethylolpropane two or three (methyl) ETHYL CYANOACRYLATE, pentaerythrite two, three or four (methyl) ETHYL CYANOACRYLATE, two glycerine four (methyl) ETHYL CYANOACRYLATE, dipentaerythritol six (methyl) ETHYL CYANOACRYLATE also has other diethylene glycol diallyl carbonic ethers, fluoro ethylene glycol many (methyl) ETHYL CYANOACRYLATE etc.
The manufacture method of the rod lens battle array 1 of the desirable embodiment of the present invention below is described.The rod lens battle array manufacture method of present embodiment is suitable for adopting the manufacturing of the rod lens battle array of the rod lens of diameter from 0.1mm to the 0.7mm scope.
Fig. 2 is the three-dimensional pattern figure that is illustrated in the manufacturing installation structure of the rod lens battle array raw sheet that uses in the rod lens battle array manufacture method of one embodiment of the present invention.Fig. 3 is rod lens battle array operation is made in explanation with the manufacturing installation of rod lens battle array raw sheet shown in Figure 1 three-dimensional pattern figure to Figure 11.
The structure of the manufacturing installation of the rod lens battle array raw sheet that uses in the rod lens battle array manufacture method of present embodiment at first, is described.As shown in Figure 2, the manufacturing installation that uses in the manufacture method of the rod lens battle array of present embodiment has the metal platen 10 of going up of rectangular parallelepiped (tetragonal prism) shape.Last platen 10 is used as substrate spare installed surface on direction pair of opposite surface 12,14 in 4 outside surfaces of longitudinal extension, and another is used as the arrangement plane of rod lens part to surface 16,18.Promptly in the present embodiment substrate spare installed surface 12,14 and rod lens arrangement plane 16,18 in the lateral surface alternate configurations of last platen 10.
Substrate spare installed surface 12,14th, smooth, and be formed with a plurality of vacuum suction hole 20.This vacuum suction hole 20 and outside vacuum extractors such as vacuum pump (not having diagram) are communicated with, and rely on the absorption of vacuum extractor, can adsorb the substrate spare that becomes substrate 2 (4) after cutting off at each substrate spare installed surface 12,14.
Spaced and parallel disposes the rib 22 that extends to Width in accordance with regulations on rod lens part arrangement plane 16,18, arranges grooves 24 at a plurality of rod lens parts that are formed with the rod lens part configuration arranged side by side that becomes rod lens 6 after cutting off between this rib 22.And the rod lens part is arranged groove 24 and is not limited only to this structure, and the surface by processing bar type lens piece arrangement plane 16,18 is formed with V-shaped groove, and U-lag also can.
The spacing of rod lens part arrangement groove 24 is set at the value than the big 10 μ m of the mean diameter～20 μ m of the rod lens part of arranging.Therefore, in the gap that is formed with the 10 μ m～20 μ m between each rod lens part of arranging on the rod lens part arrangement plane 16,18.Filling this gap with cementing agent then, is that the cementing agent of the sclerosis of 10 μ m～20 μ m is fixed on each rod lens 6 in the rod lens battle array 1 of end article by intervening thickness (width).
Owing to the value that rod lens part arrangement separation is set at than the big 10 μ m of mean diameter of rod lens part, in rod lens part arrangement plane 16, the gap of the rod lens part of arranging on 18 just can become more than the 10 μ m, so just be difficult to take place in the bad phenomenon of filling adhesive between the rod lens part.On the other hand, by separation being set at below the value than the big 20 μ m of mean diameter of rod lens part, when making the arrangement spot be difficult to produce, can also guarantee the quantity of configuration rod lens in certain interval, thus the light quantity more than guaranteeing to have necessarily as the rod lens battle array.Separation is set in the above-mentioned value scope for this reason.It is better than the value below the 15 μ m more than the big 10 μ m of mean diameter of rod lens part that above-mentioned separation is got work.
Rod lens part arrangement plane 16,18 be formed with most bars and rod lens part arrange groove 24 intersect vertically and stretch vacuumize groove 26.This vacuumize groove 26 also with connection such as the vacuum extractor of outside (not having diagram) vacuum pump, rely on the attraction of vacuum extractor to make the rod lens part can be adsorbed on each rod lens part arrangement plane 16,18.
Arranged spaced has following platen 32 in accordance with regulations below last platen 10.Following platen 32 is the metallic plate-shaped members with end face of energy device substrate spare size.Form a plurality of vacuum suction hole 36 at the following end face 34 of platen 32, utilizing does not have the vacuum extractor of illustrated vacuum pump etc. to be adsorbed on down substrate spare on the platen 32.Also have, following platen 32 relies on elevating mechanisms can carry out lifting action facing to last platen 10, and can press to the rod lens of adsorbing on the rod lens battle array arrangement plane 16 of (pressurization) last platen 10 to the substrate spare that is adsorbed on end face 34.
Also have, following platen 32 has sleeve structure can be made the substrate spare heating of adsorbing or be cooled to set point of temperature on end face 34.Following platen 32 is fixed under the last platen 10 on the objective table that can move 40 of a pair of displacement of the lines guides 38 configurations that two edge directions extend.Utilize this structure, following platen 32 can position under the last platen 10 and from move between the position removed of platen 10.
Following with reference to Fig. 3 to Figure 11, the rod lens battle array manufacture method with the former board manufacturing apparatus of above-mentioned rod lens battle array is described.Describe in order clearly the rugosity of rod lens part have been done to exaggerate very bigly in Figure 11 at Fig. 3.
Use the manufacture method of present embodiment, on a face of the rod lens parts that dispose side by side on the rod lens battle array part arrangement plane 16 (18) of last platen 10, bond the 1st substrate and make the rod lens battle array parts (1 operation) that belong to intermediate, then the 2nd substrate spare of bonding rod lens part and be produced on the raw sheet (2 operations) of the rod lens battle array of rod lens battle array continuous state shown in Figure 1 on rod lens battle array parts cuts off the raw sheet of tabular rod lens battle array and make as shown in Figure 1 rod lens battle array at the axis direction of vertical rod lens battle array part again.
＜1 operation 〉
Below specify the manufacture method of present embodiment.At first, as shown in Figure 3, the substrate spare 42 that becomes the 1st substrate 2 after cutting off is configured on the substrate spare installed surface 12, then utilizes vacuum extractor to adsorb, substrate spare 42 is adsorbed on the substrate spare installed surface 12 from the vacuum suction hole 20 of substrate spare installed surface 12.Use length to be 250mm as substrate spare in the present embodiment, width is 170mm, and thickness is the phenolics sheet of the black of 0.42mm.The substrate spare of this phenolic resin-made 42 leaves standstill keeping at the indoor 5kg of the adding jointing plate of constant temperature and humidity before use for preventing distortion.
Be that the center revolves platen 10 by the arrow A direction to turn 90 degrees, rod lens part arrangement plane 18 is disposed towards the top then with axle 28.Then shown in the image pattern 4, most bar rod lens parts 44 of length cut-out in accordance with regulations are paved with rod lens part arrangement plane 18, utilize vacuum extractor to adsorb from rod lens part adsorption tank 26 limits of rod lens part arrangement plane 18, the limit is configured in rod lens part 44 among the whole rod lens part arrangement groove 24, and rod lens part 44 is adsorbed on above the rod lens part arrangement plane 18 with state arranged side by side.
In the present embodiment, have the index distribution that reduces continuously to the outer circumference surface refractive index from the center of circular cross section as rod lens part 44, and be arranged with 645 diameter 0.35mm, length 166mm, refractive index of the centre 1.497, index distribution constant 0.865mm
-1Plastics system rod lens part.And arrange separation and be set at 0.365mm.
Then, last platen 10 revolved by the arrow A direction again turn 90 degrees, make the substrate spare installed surface 12 that is adsorbing substrate spare 42 towards the below.Then, the following platen 32 that is configured under the platen 10 is risen, join the end face 34 of following platen 32 with by the bottom surface of the substrate spare 42 of substrate installed surface 12 absorption, under this state with when the vacuum suction hole 20 of substrate spare installed surface 12 stops to adsorb, begin absorption from a plurality of vacuum suction hole 36 that forms at the following end face 34 of platen 32, make substrate spare 42 move on to down assigned position on the platen 32 from last platen 10.Make down afterwards platen 32 declines (Fig. 5).
Then, the substrate spare 42 displacement guidess 38 along the line that make down platen 32 and be adsorbed move to the arrow B direction, be disposed at last platen 10 under the position of staggering, end face adhesive stripe-coating 46 at the substrate spare 42 that is pressed down 34 absorption of dish 32 end face, the substrate spare 42 displacement guidess 38 along the line that descend afterwards platen 32 and be adsorbed move to the arrow C direction, and turn back to platen 10 under position (Fig. 6).
In the present embodiment, using the ammonia ester as cementing agent 46 is moisture-curable type heat fusing cementing agent (trade name エ ス ダ イ Application 9607K セ キ ス イ system).Also have, in the present embodiment, cementing agent 46 is pressed the coating interval of 5.5mm, with the application width of 4.5mm, the thickness of 49 μ m, separates the interval of 1mm, 30 (being illustrated as 4) of band shape coating.Coating method does not limit especially, can be that the method for adhesive stripe-coating of 49 μ m ± 1.5 μ m is best with the applied thickness precision.Also have, the interval of band shape adhesive stripe-coating 46 is not to be limited to 1mm, but it is comparatively desirable to get the scope of 0.5mm～2mm.Can fully guarantee function with getting the value of doing more than the 0.5mm, when getting when doing to be worth below the 2mm, also can suppress not filling part exposing to the battle array surface even off-position more or less misplaces as " hold " of cementing agent.The thickness of adhesive stripe-coating is considered to get to make 1/10～1/2nd of rod lens radius from the angle that suppresses bubble and arrangement spot, suits, and it is better to get work 1/5～1/2.
On the other hand, towards on platen 10 above substrate spare installed surface 14 on adsorbing the substrate spare 48 (Fig. 6) that becomes the 2nd substrate after cutting off.
Then, platen 10 is revolved by the arrow A direction again turn 90 degrees, the substrate spare installed surface 14 that is adsorbing substrate spare 48 is configured in and makes the rod lens part arrangement plane 18 of adsorbing rod lens part 44 side towards the below.Then, the following platen 32 that is adsorbing the substrate spare 42 that is coated with cementing agent 46 is risen, the end face that is coated with the substrate spare 42 of cementing agent 46 on the following platen 32 is closely pressed together on the rod lens part 44 (Fig. 7) that is adsorbed on the rod lens part arrangement plane 18, substrate spare 42 is bonded on the rod lens part 44.
At this moment, will descend platen 32 to be heated to 50～100 ℃ in advance, the cementing agent 46 that is coated on the substrate spare 42 be transferred to suitable viscosity, make driving fit fully seamlessly between rod lens part 44 and the substrate spare 42.Then, the temperature of following platen 32 is dropped to about 20 ℃, make the cementing agent cooling.
Following platen 32 pressures are attached to the moulding pressure of platen 10 at 0.1MPa/cm
2～0.5MPa/cm
2Scope suit.Preferably at 0.25MPa/cm
2～0.4MPa/cm
2Scope.
Under this state, towards on platen 10 above the arrangement plane 16 of rod lens part on, as shown in Figure 7, be paved with many rod lens parts 50 that length is in accordance with regulations cut off, just rod lens part 50 is configured in whole rod lens part and arranges within the groove 26.At this moment, utilize vacuum extractor to vacuumize, rod lens part 50 is adsorbed on the rod lens part arrangement plane 16 with state arranged side by side from the vacuum suction groove 26 of rod lens part arrangement plane 16.At this, rod lens part 50 is identical goods with rod lens part 44.
Then, stopping platen 32 being descended to after platen 32 vacuumizes down.At this moment, because substrate spare 42 has been bonded in rod lens part 44, so be situated between by rod lens part 44 attached on the last platen 10.
At this state, make down platen 32 risings and press to platen 10, the substrate spare 48 usefulness cementing agents 52 that adsorbing on following platen 32 are bonded in the rod lens part 50 that is adsorbing on the rod lens part arrangement plane 16 of platen 10.
On the other hand, in this pressurization operation, rod lens part arrangement plane 18 towards the top of last platen 10 stops vacuum suction, and rod lens battle array parts 56 that make rod lens part 44 and 42 integrations of substrate spare formation with cementing agent 46 are unloaded from rod lens part arrangement plane 18.At this moment, fully cooled off as the cementing agent 46 of heat fusing type, so the arrangement of rod lens part 44 entanglement can not take place.
The rod lens battle array parts 56 that unload comparatively be it is desirable to be placed on 10 ℃～40 ℃ of temperature, under the environment of humidity 20%RH～85%RH, preferably be placed on 15 ℃～25 ℃ of room temperatures, under the environment of humidity 30%RH～60%RH, it is good that cementing agent 46 fully is hardened to.
＜2 operations 〉
Below illustrate from rod lens battle array parts 56 to 2 operations making rod lens battle array raw sheet.At first,, make substrate spare 58 be adsorbed on down platen 32 with to press Fig. 3 identical to the operation of Fig. 6 explanation, and in this substrate spare adhesive stripe-coating 60.
Promptly at first last platen 10 by making substrate spare installed surface 12 towards top configuration, after the cut-out, the substrate spare 58 that becomes the 2nd substrate 4 is adsorbed on the substrate spare installed surface 12.Be last platen 10 that arrow A direction Rotate 180 degree is pressed at the center with axle 28 then, make the substrate spare installed surface 12 that is adsorbing substrate spare 58 towards the below.
Then, the following platen 32 of configuration is risen, the bottom surface of the end face 34 of time platen 32 and the substrate spare 58 that adsorbing on substrate spare installed surface 12 is joined.Under this state, when stopping the absorption in the vacuum suction hole 20 from the substrate spare installed surface 12, begin absorption from a plurality of vacuum suction hole 36 that forms at the end face 34 of platen 32 down, make substrate spare 58 move to down assigned position on the platen 32 from last platen 10.Platen 32 is descended.
Then, the substrate spare 58 displacement guidess 38 along the line that make down platen 32 and adsorbing move by the arrow B direction, and be configured on the staggered positions under the last platen 10, and in the end face adhesive stripe-coating 60 of substrate spare 58, then, make down platen 32 and the substrate spare 58 displacement guidess 38 along the line that are being adsorbed move by the arrow C direction and turn back to platen 10 under the position.Also have as cementing agent 60 and use the goods identical, except that thickness is got work 45 μ m, apply at substrate spare 58 in the same manner with coating at substrate spare 42 with above-mentioned cementing agent 46.
Then as shown in figure 10,1 operation making and finish sclerosis rod lens battle array parts 56 so that substrate spare 42 towards below state be adsorbed on towards above on the substrate spare installed surface 14 of platen 10.Then, make platen 10 Rotate 180 degree as shown in figure 11, the rod lens part 44 of rod lens battle array parts 56 is disposed towards the below, the following platen 32 of configuration under last platen 10 is risen, substrate spare 58 close being attached on the rod lens part 44 of on following platen 32, adsorbing, and substrate spare 58 is bonded on the rod lens part 44 with cementing agent 60.
At this moment, the cementing agent 60 of coating on substrate spare 58 and the temperature of following platen 32 are heated to 50 ℃～100 ℃, cementing agent is adjusted to suitable viscosity.This moment, used pressure was at 0.1MPa/cm
2～0.5MPa/cm
2Scope suits.0.25MPa/cm preferably
2～0.4MPa/cm
2This result makes no gap generation between rod lens part 44 and the substrate spare 58, and driving fit fully.Descend afterwards the temperature of platen 32 to drop to 20 ℃ and make cementing agent 60 coolings.
In rod lens, various lens diameter spots are all arranged, applied thickness spot, the existence of substrate thickness spot on the cementing agent, substrate spare.For this reason, when whole adhesive stripe-coating of substrate spare or configuration have the resin sheet of attachment function, produce bubble at recess during because of the thin thickness of cementing agent or resin sheet, opposite if the redundance because of projection causes that operation is bad when thickness is thick, these all can make qualification rate reduce.
Be divided into 30 coatings of carrying out cementing agent in present embodiment because of the interval with 1mm, the interval of 1mm will become " hold " of unnecessary cementing agent, thereby can suppress the generation and the stabilizing process of bubble.Finish because of the sclerosis of cementing agent in the rod lens battle array parts of 1 operation in addition, so also can entanglement even heat its arrangement again.
Make rod lens battle array raw sheet like this and (cut off spacing 5.5mm by 5.2mm, cut-out edge of a knife amount 0.3mm) after the cut-out, suits at 40 ℃～70 ℃, under the environment more than the humidity 50%RH, be more preferably at 55 ℃～65 ℃, the above environment of humidity 70%RH is placed down cementing agent is hardened fully.At this moment " hold " because of cementing agent brought into play function in rod lens battle array inside, and hardening stress just disconnects can suppress crooked generation.
Make the cementing agent filling part not that also has maximum 0.8mm in the rod lens battle array sometimes in the manufacture method of utilizing present embodiment.This is the mirror-finish cutting of step operation and being embedded in the rod lens battle array of finishing after the filling part utilization not, so even when cutting off, temporarily there are some deviations, also exposing of filling part not on the surface of battle array.
So just made the preceding rod lens battle array of cutting of 5.2mm.Rod lens battle array before the cutting of this 5.2mm is finish-machined to 4.4mm at section through mirror-finish cutting, makes 29 rod lens battle arrays by 1 rod lens battle array raw sheet.
According to the manufacture method of the rod lens battle array of above-mentioned embodiment, while because be platen to be rotated make rod lens battle array raw sheet, so raw sheet that just can high efficiency production rod lens battle array in little space.
The present invention is not limited to above-mentioned embodiment, does all changes and distortion is possible in the scope of the technological project that the claim scope is put down in writing.
For example, above-mentioned embodiment is rod lens forms the rod lens battle array of 1 row (1 section) configuration in inside a manufacture method, and the present invention also is applicable to the manufacturing that forms the rod lens battle array that (many structures) arranges more than 2 row in rod lens between the substrate.
For example, in the manufacturing of the rod lens battle array of 2 segment structures, at first the manufacture method with the rod lens battle array of above-mentioned 1 segment structure is identical, after absorption on the substrate spare installed surface 12 that makes substrate spare at last platen 10, on the rod lens part arrangement plane 18 of last platen 10, arrange the 1st section rod lens, make state as shown in Figure 4.Again on the arrange body of the 1st section rod lens part with the solid matter mode side by side configuration be paved with a plurality of rod lens parts.At this moment the arrange body of the rod lens part of the 2nd section rod lens part with respect to the 1st section becomes the layer-by-layer state configuration.The 2nd section rod lens part is attracted by the fine gap between the 1st section rod lens part and is adsorbed on the rod lens part arrangement plane 18.
Then, identical with the rod lens battle array manufacture method of above-mentioned 1 segment structure, substrate spare is transferred to down platen 32, and in many adhesive stripe-coating of end face of substrate spare.This moment, the thickness of cementing agent was got work 75 μ m.
Then, identical with the rod lens battle array manufacture method of above-mentioned 1 segment structure, platen 32 risings are added substrate spare be pressed in 2 sections rod lens parts that adsorbed by last platen 10.The manufacture method of the rod lens battle array of pressurized conditions and above-mentioned 1 segment structure is identical.
At this moment, cementing agent is at first filled between the rod lens of substrate spare and the 2nd section, then makes filling agent push through fine gap between the 2nd section rod lens, arrives the 1st section rod lens, makes complete filling between the rod lens of substrate and the 2nd section and the 1st section.
The rod lens battle array parts of 2 segment structures that make so also with the same the suiting of rod lens battle array parts of 1 segment structure 10 ℃～40 ℃ of temperature, under the environment of humidity 20%RH～85%RH, be more preferably 15 ℃～25 ℃ of room temperatures, the environment of humidity 30%RH～60%RH is placed down, makes the cementing agent sclerosis.
Afterwards, through and the identical operation of rod lens battle array manufacture method of above-mentioned 1 segment structure and make the rod lens battle array.
Substrate spare installed surface and rod lens part arrangement plane are to use the alternately last platen of adjacency configuration in the above-mentioned embodiment, and all faces all are to use the last platen of rod lens part arrangement plane, and the supply of the downward platen of substrate spare constitutes also passable with other devices.Also can use triangular prism according to this structure, the prismatic last platen of odd numbers such as pentagonal prism.
Also have, be to carry out heating and cooling in the above-described embodiment with same following platen, yet have special-purpose heating platen and cooling platen down down, the heating and cooling that make cementing agent are carried out dividing other to press down dish, the temperature that can reduce down platen like this changes the needed time, and is also passable with the structure in this shortening processing time.Promptly pressurize on one side with following platen one side adhesive heating etc. with heating, after finishing this pressurization, releasing is by the heating pressurization of platen down, using heating down, platen moves on to other position, then substrate spare etc. is pressurizeed while cooling off with cooling time platen, make cementing agent cooling sclerosis, use this structure also passable.
In the above-described embodiment, 1 operation of making rod lens battle array parts 56 is to use identical apparatus structure with 2 operations of making rod lens battle array raw sheet, if use its production efficiency of isolated plant more can improve to each operation respectively.At this moment, the last platen of 2 operations does not need to arrange rod lens, so only use the structure that constitutes by the tabular surface that disposes a plurality of vacuum suction hole that absorption substrate spare uses also passable, use that the plate physique structure of substrate spare installed surface is used as on 2 relative main surfaces is also passable.
Embodiment
Below explanation is the MTF proving installation of the rod lens battle array made about the manufacture method that is used to estimate an embodiment of the invention.
The MTF proving installation is shown in Figure 12.This proving installation is by the light source 60 of configuration in order, wave filter 62, and diffuser plate 64, grid (test pattern) 66, and CCD line sensor 68 constitutes.And grid 66 and CCD line sensor 68 leave the regulation conjugate length of having only rod lens.Also have, in the present embodiment the grid 66 of usage space frequency number 12 (line is to Lp/mm).So-called spatial frequency number be the combination of transparent thread and shading (deceiving) line as 1 line, be illustrated in the line number in the width of 1mm.Determination object rod lens battle array 1 is configured between grid 66 and the ccd line sensor 68.
Utilization is located at the CCD line sensor of imaging surface, measures the light quantity of the image of grid 66, obtains MTF according to the maximal value (iMAX) and the minimum value (iMIN) of the photometric quantity that is shown in Figure 13 with following formula.
MTF(％)＝[(iMAX-iMIN)/(iMAX+iMIN)]×100
Below illustrate it is about being used to estimate the bend testing apparatus of the rod lens battle array made from the manufacture method of an embodiment of the invention.
The structure of expression bend testing apparatus is shown in Figure 14.This bend testing apparatus is by using from laser displacement gauge 70 (for example キ one エ Application ス society system LK-085) test of the sending substrate 2 of the rod lens battle array 1 of laser 72 irradiation tested objects, detecting the crooked δ of rod lens 1.In detail as shown by arrow D, at bearing of trend along the rod lens 6 of vertical rod lens battle array 1, with the surface of test with the substrate 2 of laser 72 scanning rod lens battle arrays 1, by the data of gained (for example, NR-2000) are handled the crooked δ measure rod lens battle array 1 with data collector 74.
(embodiment 1)
To the test result of the rod lens battle array of 1 segment structure made of the manufacture method of embodiments of the present invention and more than the MTF=65%, crooked 0.5mm is expressed as follows with interior qualification rate.
Grid precision (spatial frequency number)=12Lp/mm
Test wavelength=525nm
MTF ＝78.0％
Qualification rate=89.0%
Crooked qualification rate=99.6%
(embodiment 2)
To the test result of the rod lens battle array of 2 segment structures made of the manufacture method of one embodiment of the present invention and more than the MTF=65%, crooked 0.5mm is expressed as follows with interior qualification rate.
Grid precision (spatial frequency number)=12Lp/mm
Test wavelength=525nm
MTF ＝79.2％
MTF qualification rate=91.2%
Crooked qualification rate=99.0%
(comparative example 1)
Below comparative example 1 is illustrated.
Open the manufacture method of flat 9-90105 communique proposition with the spy and made the rod lens battle array.But rod lens part and the foregoing description use same material.And replace the resin sheet of above-mentioned communique record to use and the same cementing agent of the foregoing description, its coating method is to apply equably at the whole base plate face.Substrate is configured on the lens face from the top, similarly pressurizes from the top.The MTF result who measures with method same as the previously described embodiments with the rod lens battle array of this manufacture method making, and more than the MTF=65%, crooked 0.5mm is expressed as follows with interior qualification rate.
Grid precision (spatial frequency number)=12Lp/mm
Test wavelength=525nm
MTF ＝69.4％
MTF qualification rate=25.2%
Crooked qualification rate=76.3%
In the 1 rod lens battle array of making as a comparative example, between substrate and the lens, or find cementing agent not filling part in many places between the lens, and malalignment take place that finally crookedly produce also manyly, it is difficult wanting high-precision low cost ground manufacturing rod lens battle array as can be known.About cementing agent applying device and method
Following with reference to appended drawings, the structure of the cementing agent applying device of present embodiment is described.Figure 15 is the summary side view of structure of the cementing agent applying device 101 of expression present embodiment.
As shown in figure 15, cementing agent applying device 101 has the cementing agent of the depositing tube 102 of packing into, and cementing agent is discharged with dispenser 104, cementing agent discharge nozzle 106.Cementing agent is discharged with dispenser 104 and the cementing agent tube 102 of packing into and is communicated with, and pack into the cementing agent supply cementing agent discharge nozzle 106 of 102 li in tube of cementing agent.Cementing agent discharge nozzle 106 makes escape hole 106a be in downward state by nozzle installing plate 108 and is configured in cementing agent tube 102 the below of packing into.
The escape hole 106a of cementing agent discharge nozzle 106 just below dispose columnar transferring roller 110.The relative configuration of outer circumference surface of the escape hole 106a of cementing agent discharge nozzle 106 and transferring roller 110.
Also have, transferring roller 110, the pressing mechanism of the no illustrated spring assembly of dependence etc., the top of cementing agent discharge nozzle 106 and the outer circumference surface of transferring roller 110 are often contacted, no matter the machining precision of its transferring roller 110, and the outer circumference surface that will make transferring roller 110 adhesive stripe-coating equably.
Transferring roller 110 relies on no illustrated adjustable speed drive unit driven in rotation, make the cementing agent of discharging from the escape hole 106a of cementing agent discharge nozzle 106 attached to outer circumference surface, and can transfer to the substrate 114 on the back up pad 112 that is configured in the below to cementing agent or be configured in rod lens (not having diagram) on the substrate 114.End face in back up pad is provided with a plurality of adsorption holes that are communicated with vacuum extractor, by the vacuum suction of these adsorption holes, makes substrate 114 remain on the position of stipulating on the back up pad.
The outer circumference surface of transferring roller 110 uses and can transfer to the substrate 114 of rod lens battle array usefulness to the cementing agent that relies on 106 coatings of cementing agent discharge nozzle or the material of the rod lens that parastate is arranged on substrate 114 formation.Adopt the outer circumference surface of the transferring roller 110 of the good silicon rubber formation of transfer performance in present embodiment.
Have, the speed 1～250mm/ that shifts cementing agent to substrate 114 grades is suitable second, is more preferably in 10～100mm/ scope of second again.When transfer velocity was too fast, the cementing agent that is coated in transferring roller 110 might not transferred to substrate 114 or the rod lens of configuration on substrate 114.Transfer velocity is crossed when slow on the other hand, and efficient is not high, during the production costs of rod lens battle array, is unfavorable.
Below describe the structure of cementing agent discharge nozzle 106 in detail.Figure 16 is the exploded perspective view of cementing agent discharge nozzle 106.Figure 17 is the sectional view that the escape hole 106a of the cementing agent discharge nozzle 106 of Figure 15 amplifies.As shown in figure 16, cementing agent discharge nozzle 106 has 2 jet elements 116,118 and the shim 120 that is configured in the specific thicknesses between these jet elements 116,118.
As shown in figure 16, jet element 116,118 all is the slab-shaped part that there is wedge grip the lower end, and configuration relatively.Shim 120 is panel-like members of rectangle, is formed with the triangle grooving 120a of portion that extends upward from the lower end in its underpart.Jet element 116,118 clampings shim 120 also with there not being illustrated connecting structure integration.
When shim 120 is configured between 2 jet elements 116,118,, become the gap 122 that cementing agent circulates between 2 jet elements 116,118 by the 120a of grooving portion.Figure 16 clearly illustrates that the lower end in this gap (circulation flow path) 122 constitutes the peristome 122a (slit) of escape hole 106a.In present embodiment is to make the axis of this slit 122a and transferring roller 110 parallel extension, cementing agent discharge nozzle 106 and transferring roller 110 relative configurations.Therefore,, promptly be equivalent to length, on transferring roller 110, carry out the band shape coating of cementing agent as application width with the lower end of the grooving 120a of portion with the length of slit 122a.
Cementing agent is from connecting the inflow road 106b of jet element 116, and by means of the 120a of grooving portion of shim 120, the top in the gap (cementing agent path) that forms between jet element 116,118 flows into, and discharges to transferring roller 110 from the peristome of escape hole 106a.
In present embodiment, rely on the shim 120 that uses different-thickness, the discharge rate that the width d1 of slit just can regulate cementing agent between the change jet element 116,118.
Slit width d1 between the jet element 116,118 suits in the scope of 50～500 μ m.Its cementing agent was in uneven thickness when discharge rate instability when this width d1 is wide, cementing agent were adhered at transferring roller 110, thereby became the reason that produces the thickness spot.On the other hand, the width d1 of slit crosses will become the reason that cementing agent stops up when narrow.
The coating state that the shape of shim 120 is pressed cementing agent can suit to change, and when using the shim 120 of shape shown in Figure 16, can have the band shape cementing agent coating of the width that is equivalent to grooving portion 120a lower end length.And,, just can carry out many coatings of cementing agent the shape of the shape of the top of shim (lower end) as slit.Promptly use the shim of lower end branch shape, the most bar slits in escape hole formation branch make cementing agent also passable by many muscle shapes (or faciola shape) coating at interval at transferring roller.
Also have, do not add shim 120 in the present invention between the jet element 116,118 that constitutes cementing agent discharge nozzle 106, it is also passable only to keep the width d1 of slit with jet element 116,118.For example, under the few situation of the varietal change of making the rod lens battle array, do not need frequently to change the thickness of cementing agent, only press with the rotational speed of adjusting transferring roller with from the discharge of cementing agent discharge nozzle 106 cementing agents, it is just passable that the applied thickness of cementing agent is carried out inching.In this case, for reaching predefined slit width d1, it is also passable to be equivalent to form the slit that becomes the cementing agent path at the inner vertically increase jump of jet element.
In present embodiment as shown in figure 17, the height and position on the top (lower end) of 2 of assembling jet elements 116,118 has only jump h1 difference.Say that in detail its structure is to join in the lower end of the jet element 118 of transferring roller 110 sense of rotation upstreams configurations and the outer circumference surface of transferring roller 110, the jump of the h1 above the lower end of the jet element 116 of transferring roller 110 sense of rotation downstreams configuration only is positioned at than the lower end of jet element 118.
According to this structure, when the distance (being h1) between the top of the jet element 116 that change transferring roller 110 and transferring roller do not contact, the size of escape hole 106a (length of above-below direction) changes, the pressure that nozzle tip needs changes thereupon, and therefore the discharge rate from escape hole 106a cementing agent will change.Just can change by changing jump h1 for this reason, thereby can be adjusted at the thickness of transferring roller adhesive stripe-coating from the discharge rate of the cementing agent of escape hole 106a.
This jump h1 is set in 30～300 μ m and is advisable, and is more preferably the scope at 50～200 μ m.The pressure of nozzle diminished when this jump h1 was excessive, discharged instability, and the tendency that produces the coating spot is arranged, and opposite h1 does not reach the regulation discharge rate when too small, so can not apply with specific thickness.
The following cementing agent working procedure of coating that carries out with the cementing agent applying device of present embodiment of explanation.At first the cementing agent of quantitative moisture-curable type is put into the cementing agent tube 102 of packing into, and it is sent into cementing agent discharge with in the dispenser 104.
Sending into cementing agent to the cementing agent discharge with dispenser 104 is to rely on to pack into tube 102 importing pressurized air and inert gas etc. to carry out.Being advisable in the discharge rate that can keep stipulating to the cementing agent pressure control that tube 102 imports gases of packing in the cementing agent applying device 101 of present embodiment, generally is at 0.05～1MPa, is more preferably the scope at 0.10～0.7MPa.
During this hypertonia, cementing agent tube 102 grades of packing into must constitute with pressure vessel, and, because of making cementing agent applying device structure, equipments such as needs compressor become complicated for keeping high pressure, and big device must make the cost rising.On the other hand, it will be difficult keeping the regulation discharge rate during hypotony.
Also have, cementing agent viscosity height, only relying on cementing agent tube 102 pressurizations of packing into can not send into cementing agent to cementing agent fully sometimes and discharge with dispenser 104, the tube 102 so cementing agent is packed into, cementing agent is discharged with dispenser 104, and cementing agent discharge nozzle 106 and nozzle are installed with plate 108 and preferably adopted the structure that suitably can heat.
Cementing agent is discharged with dispenser 104 utilizations does not have illustrated air source to carry out on-off action, and cementing agent is supplied with cementing agent discharge nozzle 106.Replace cementing agent to discharge with dispenser 104, the structure that employing gear-type pump etc. are supplied with cementing agents to cementing agent discharge nozzle 106 also can.
Supply with the cementing agent of cementing agent discharge nozzle 106 and discharge, carry out applying to the band shape of circumferencial direction extension with the outer circumference surface of fixing speed at the transferring roller 110 of rotation from escape hole 106a.The rotational speed of the transferring roller 110 of the cementing agent applying device 101 of present embodiment is set in 10～250mm/ scope of second.
Transferring at substrate 114 supported on the back up pad 112 attached to the band shape cementing agent of transferring roller 110 outer circumference surfaces or being configured in the surface of the rod lens on the substrate 114.
Cementing agent is transferred to substrate 114 or the surface energy of the rod lens of arranging at substrate 114 adopts back up pad 112 to rely on transferring rollers 110 and the structure that transmits from transferring roller 110; Back up pad 112 is configured on the moving stage mobile back up pad 112 and the structure that shifts; Fixed support plate 112 and transferring roller 110 is configured on the moving stage, mobile transferring roller 110 and the structure that shifts.
At this moment, suit in the scope of 20～200 μ m at substrate 114 or the thickness that is configured in the rod lens adhesive stripe-coating on the substrate 114.When the thickness of cementing agent is blocked up, when pressurization rod lens battle array, see the coating precision of resin bed between substrate 114 and the rod lens, this might become the main cause that produces rod lens arrangement spot.On the other hand, the thickness of cementing agent is crossed when approaching, and has the gap between rod lens and the substrate and produces, and the air layer of formation will be the reason that optical property reduces.The thickness error of cementing agent suits in ± 5 μ m in working procedure of coating.
Apply the thickness of (transfer) cementing agent as the rod lens of above-mentioned configuration on transferring roller 110 or substrate 114 or substrate 114, by the discharge pressure of change from cementing agent discharge nozzle 106, the width of the slit of cementing agent discharge nozzle 106, the jump h1 on the top of 2 jet elements 116,118 of cementing agent discharge nozzle 106 or the rotational speed of transferring roller 110 can access adjustment.
According to applying device, cementing agent directly is not coated in the rod lens that substrate or substrate arrange, so substrate and rod lens can not be damaged from the cementing agent discharge nozzle with this structural adhesive.And, can reach the purpose that obtains the adhesive stripe-coating of high positional precision with simple structure than rectilinear motion by utilizing rotatablely moving of transferring roller.
Have again, jump is set, can often keep necessarily with the distance of transferring roller, so can carry out the coating of cementing agent accurately according to top at 2 jet elements of cementing agent discharge nozzle.
Because of utilizing band shape or many bar shapeds adhesive-applying, so when adding pressure handle rod lens and being embedded in the cementing agent, or, just can suppress the generation of air layer being coated with the cementing agent substrate when being pressed together on the rod lens of arranging on the substrate etc.Its result does not need to append pre-bonding operation and filling work procedure, thus can be efficient, and cheapness is stably made the rod lens battle array.
The cementing agent applying device 151 of other embodiments of the present invention below is described.Figure 18 is the side view that summary is represented cementing agent applying device 151 structures.Figure 19 is the amplification profile of escape hole of the cementing agent discharge nozzle of cementing agent applying device 151.
Cementing agent applying device 151 except that not being situated between by transferring roller, directly is coated in cementing agent beyond the design feature of substrate, and the cementing agent applying device 101 of its basic structure and the 1st embodiment is identical.Therefore, with the difference be the structure of center explanation cementing agent applying device 151.
As shown in figure 18, cementing agent applying device 151 possesses the cementing agent of the taking in cementing agent tube 152 of packing into, and cementing agent is discharged with dispenser 154, cementing agent discharge nozzle 156.
Cementing agent is discharged with dispenser 154 and cementing agent and is packed tube 152 connections into also the cementing agent supply cementing agent discharge nozzle 156 in the tube of packing into.Cementing agent discharge nozzle 156 is by nozzle installing plate 158, makes the downward state of escape hole 156a and is configured in pack into the below of tube 152 of cementing agent.
The escape hole 156a of cementing agent discharge nozzle 156 is with respect to base plate supports face (substrate loading surface) the 160a configuration of the end face of the back up pad 160 of mounting substrate.
Base plate supports face 160a constitutes with resilient material.Comprise that in present embodiment the back up pad 160 of base plate supports face 160a is formed with the superficial layer of the about 5mm of thickness that makes with silicon rubber, thereby make base plate supports face 160a have suitable elasticity.The end face of the board substrate of the silicon rubber thin plate bottom in back up pad on the throne forms, and relies on protuberance to remain on the matrix of plate.
Base plate supports face 160a is provided with a plurality of adsorption holes (not having diagram) that are communicated with vacuum extractor, by the vacuum suction of these adsorption holes, substrate is remained on the assigned position of base plate supports face 160a.
Also have, cementing agent applying device 151 relies on the reinforcing of the pressure structure (not having diagram) of spring etc. in the cementing agent coating, and the surface (applicator surface) that makes the top of cementing agent discharge nozzle 156 and load the substrate 114 that is fixed on base plate supports face 160a contacts.Therefore, even produce the thickness spot on the surface of substrate 114, cementing agent still can be coated in the applicator surface of substrate 114 with uniform thickness.
Cementing agent applying device 151 has the whole driving mechanism of adjustable-speed (not having diagram), relies on this driving mechanism that cementing agent discharge nozzle 156 and back up pad 160 are relatively moved.As general employing of driving mechanism the driving mechanism that the moving stage that is loaded with back up pad 160 can be relatively moved with respect to static cementing agent discharge nozzle 156 is arranged, perhaps make the cementing agent that is installed in moving stage pack into the tube 152, cementing agent is discharged with dispenser 154, the driving mechanism that cementing agent discharge nozzle 156 grades can relatively move with respect to static back up pad 160 etc.
The structure of the escape hole 156a of cementing agent discharge nozzle 156 below is described.
Utilize and the identical structure of discharge nozzle 106 of the 1st embodiment at the cementing agent discharge nozzle 156 of present embodiment, the gap 166 that width is d2 is disposed in formation between 2 jet elements 162,164.The lower end in this gap 166 constitutes peristome (slit) 166a of escape hole 156a.This slit 166a extends configuration in the direction that relatively moves perpendicular to substrate 114 and cementing agent discharge nozzle 156 in the present embodiment.Therefore carry out the band shape coating of cementing agent at substrate 114 with the fabric width of the lower end length that is equivalent to slit 166a.
As shown in figure 19, the height and position on 2 jet element 162,164 assembling its tops, back (lower end) has only jump h2 difference.Says in detail in the lower end (top) of the jet element 164 of the downstream configuration of the coating direction of cementing agent discharge nozzle 156 and substrate 114 to contact the jump of the h2 above the lower end (top) of the jet element 162 that disposes in coating direction upstream only is positioned at than the lower end (top) of jet element 164 with the applicator surface of substrate 114.
According to this structure,, be the cementing agent coating amount thereby change from the cementing agent discharge rate of escape hole 156a by changing the size (length of above-below direction) that jump h2 changes escape hole 156a.Therefore, rely on change jump h2, make cementing agent discharge rate change, thereby can be adjusted at the thickness of substrate 114 adhesive stripe-coating from escape hole 156a.
In the present embodiment, executed DLC (Diamond.Like.Carbon) coating at the top end face of cementing agent discharge nozzle 156.Also be difficult to produce heat of friction even utilize the top end face of this structure nozzle to contact, so can suppress simultaneously, also can suppress because of contact damaged substrate 114 because of heat of friction wounded substrate 114 with substrate 114.Also have, adopt other low coatings that rub or also passable with the top end face of low-friction material formation nozzle.
Cementing agent applying device 151 in present embodiment, the escape hole 156a of cementing agent discharge nozzle 156 is contacted with the surface that is loaded in the substrate 114 on the back up pad 160, discharge cementing agent on one side from the escape hole 156a of cementing agent discharge nozzle 156, cementing agent discharge nozzle 156 and back up pad 160 are relatively moved on one side, and by the surface that in order cementing agent is coated in substrate 114 shown in Figure 19 arrow A from the upstream of coating direction downstream.
Become to the cementing agent discharge nozzle 156 of the coating speed of the cementing agent of substrate 114 and the relative moving speed of back up pad 160 and be advisable second, be more preferably and be controlled in 10～100mm/ scope of second at 1～250mm/.Cementing agent might not be coated on the substrate 114 when coating speed was too fast, and on the other hand, it is not high that coating speed is crossed slow efficient, during the production costs of rod lens battle array, so be unfavorable.
The picture present embodiment, the surface of the escape hole 156a of cementing agent discharge nozzle 156 and substrate 114 is contacted on one side carry out under the situation that cementing agent applies, with being loaded in, substrate 114 carrying out cementing agent when coating on the inelastic plate, cementing agent discharge nozzle 156 to the substrate reinforcing can be beated, thereby cause that the cementing agent applied thickness is inhomogeneous, therefore produce the coating spot sometimes.But present embodiment base plate supports face 160a has elasticity, so can prevent beating of above-mentioned cementing agent discharge nozzle 156.
Also have, according to the cementing agent applying device of present embodiment, the top that relies on 2 jet elements of cementing agent discharge nozzle is provided with jump, institute so that and the distance of substrate can often keep necessarily, so can carry out the coating of cementing agent accurately.
Have again, according to the cementing agent applying device of present embodiment, because of cementing agent directly applies at substrate, so can shorten the coating time.And, safeguard easily, so can reduce cost because of actuator and wearing detail are few.
The present invention does not limit above-mentioned embodiment, does all changes and distortion is possible in the item scope that the claim scope is put down in writing.
For example be to use moisture-curable type cementing agent as cementing agent in the above-described embodiment, and the present invention is not limited to the moisture-curable type to the characteristic of its cementing agent, may be suitable for yet with the cementing agent applying device and the cementing agent coating method of other cementing agents.
Embodiment
Below specify the present invention with embodiment.
(embodiment 3)
Be to use moisture-curable type cementing agent (ponding chemistry society system, trade name エ ス ダ イ Application) at embodiment as cementing agent.Cementing agent is put into the tube 102 of packing into, charge into air in the tube, pressurization 0.3MPa keep-ups pressure, utilize and cementing agent 102 6 a cementing agent discharge nozzle 106 that are communicated with of packing into, press 0.3MPa with discharging, on the outer circumference surface of transferring roller 110 fabric width 26mm, length 252mm, the band of thickness 48～51 μ m is divided into 6 coatings by being spaced apart 27.5mm.
Cementing agent discharge nozzle 106 is as shown in figure 16 at jet element 116, dispose the shim that thickness is 200 μ m between 118, make the top of jet element 118 extend 120 μ m (h1=200 μ m) than the top of jet element 116, and the configuration that contacts of the top of jet element 118 shown in the image pattern 17 and transferring roller 110.This moment, the width d1 of slit was 200 μ m, and the rotational speed of transferring roller 110 is 65mm/ second.Make attached to the cementing agent of transferring roller 110 and transfer on the substrate 114 that remains on the back up pad 112 by 6 strip-types that are spaced apart 27.5mm.Transfer velocity is 60mm/ second, and the substrate of transfer is the A4 size.
The coating uniformity coefficient (deviation) of the cementing agent of embodiment is ± 2 μ m, clearly adhesive stripe-coating accurately.
Having transfer the substrate of cementing agent to be configured in many belows that are arranged in parallel within the rod lens of trough of belt flat board pressurizes.Add and be pressed in 75 ℃ and kept 1 minute, then kept 1 minute at 20 ℃.Handle was fixed on the maintenance sclerosis that many on the substrate rod lenses that are arranged in parallel were carried out 112 hours after pressurization was finished.
Many the rod lens that is arranged in parallel and the cementing agent of making of method same as described above and the baseplate-laminating of transfer that are fixed on the substrate that maintenance hardened, and with pressurizeing with above-mentioned identical condition, then be the raw sheet of making the rod lens battle array, carry out maintenance in 24 hours sclerosis again.Then raw sheet is cut off by every 4.5mm, the mirror ultrafinish of the both ends of the surface of cutting off back rod lens battle array through vertical optical axis, making length is the rod lens battle array of 4.4mm.
The MTF of the resolution of rod lens battle array is represented in test then.
The structure of MTF proving installation and method of testing because with above-mentioned identical with Figure 12 and Figure 13 explanation, so omit its explanation at this.
Ask MTF with following formula.
MTF(％)＝[(iMAX-iMIN)/(iMAX+iMIN)]×100
It the results are shown in table 1.
[table 1]
| Condition | The test wavelength | nm | 525 |
| Nicking is as precision | Line is right/ | 12 | |
| MTF mean value | ％ | 77.5 | |
| MTF C.V. | ％ | 3.2 | |
Obviously find out the arrangement precision height of the rod lens of obtained rod lens battle array from table 1, the MTF height, its error is little.
MTF C.V. is the index of expression MTF error in table.
(embodiment 4)
At embodiment 4 is to utilize the directly cementing agent applying device 151 of coating, the shape of shim has makes the structure of per 1 when coating by 5 coatings, the fabric width 4.5mm of band shape cementing agent, length 252mm, thickness 48～51 μ m, and with 5.5mm spacing coating 6 times, remove altogether 30 substrates directly apply and embodiment 1 makes the rod lens battle array identically.
Cementing agent discharge nozzle 156 image pattern 19 jet elements that are shown in 162, configuration thickness is that the shim of 200 μ m makes the top of jet element 164 on one side extend 60 μ m (h2=60 μ m) than the top of the jet element 162 of another side between 164, and the setting of jet element 118 shown in the image pattern 19 is that its top and substrate 114 are contacted.The fabric width d2 of slit 170 is 200 μ m, is 100mm/ second to the coating speed of the substrate bonding agent of applying device.The substrate of coating is the A4 size.
The coating uniformity coefficient (error) of the cementing agent of embodiment 4 is ± 2 μ m clearly can apply accurately with embodiment 1 the same cementing agent.
With carrying out the test of MTF with embodiment 1 identical method, it the results are shown in table 2 the rod lens battle array of making of embodiment 2.
[table 2]
| Condition | The test wavelength | nm | 525 |
| Nicking is as precision | Line is right/ | 12 | |
| MTF mean value | ％ | 77.5 | |
| MTF C.V. | ％ | 2.7 | |
Obviously find out the arrangement precision height of the rod lens of prepared rod lens battle array from table 2, the MTF height, its error is little.
(comparative example 2)
Below comparative example 2 is illustrated.
Open the method making rod lens battle array that flat 5-333217 communique is proposed with the spy.What but the arrange fixture of rod lens used is the trough of belt flat board, and what binder material was used is that エ ピ Off オ one system (makes the interpolation carbon black make carbon black content reach 5mass%.Trade name.ソ マ one Le society system) with the test of the method identical with embodiment 2 to its rod lens battle array MTF, it the results are shown in table 3.
[table 3]
| Condition | The test wavelength | nm | 525 |
| Nicking is as precision | Line is right/ | 12 | |
| MTF mean value | ％ | 36.2 | |
| MTF C.V. | ％ | 30.5 | |
Under this condition with certain intervals arrangement rod lens, the arrangement precision of rod lens is low, and MTF is low as a result for it, and its error is also big.
Claims (5)
1. arranged side by side manufacture method of the optical conduction array of layout circle cylindricality rod lens between 2 plate bases is characterized in that possessing and has:
Dispose the operation that pre-fixes of a plurality of rod lenses side by side on the surface of last platen;
The substrate of deciding reserving at interval and being coated with cementing agent at a face be configured in make this cementing agent applicator surface towards above and on described platen below arrangement step;
Described substrate is pressed in the rod lens that pre-fixes on the described upward platen, and makes the bonding operation of described substrate bonding in described rod lens.
2. the manufacture method of optical conduction array according to claim 1 is characterized in that pre-fixing of described rod lens is that dependence is carried out from a plurality of arrangement grooves of the surface formation of last platen and the absorption of pore.
3. the manufacture method of optical conduction array according to claim 2, the spacing that it is characterized in that described arrangement groove is set at the value than the big 10 μ m of the mean diameter～20 μ m of rod lens.
4. the manufacture method of optical conduction array according to claim 1 is characterized in that described cementing agent sets in the scope of 0.5mm～2mm by the interval of described regulation, is with the shape coating.
5. the manufacture method of optical conduction array according to claim 1, it is characterized in that the described platen of going up has spinfunction, described rod lens configuration and to pre-fix operation be to carry out under the state of top with described surface of going up platen, in described bonding operation be with the surface of platen on described towards below state under carry out.
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004038533 | 2004-02-16 | ||
| JP2004038533 | 2004-02-16 | ||
| JP2004188006 | 2004-06-25 | ||
| JP2004188006 | 2004-06-25 | ||
| JP2004199572 | 2004-07-06 | ||
| JP2004199572 | 2004-07-06 | ||
| JP2004329183A JP4778220B2 (en) | 2004-06-25 | 2004-11-12 | Method for manufacturing optical transmitter array |
| JP2004329183 | 2004-11-12 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100848237A Division CN100507609C (en) | 2004-02-16 | 2005-02-07 | Manufacturing method of optical conduction array |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1657977A CN1657977A (en) | 2005-08-24 |
| CN100342250C true CN100342250C (en) | 2007-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100076675A Active CN100342250C (en) | 2004-02-16 | 2005-02-07 | Manufacturing method of optical conduction array |
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| Country | Link |
|---|---|
| CN (1) | CN100342250C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6155610A (en) * | 1984-08-27 | 1986-03-20 | Nippon Sheet Glass Co Ltd | Manufacture of convergent light transmitter |
| JPH05333217A (en) * | 1992-05-29 | 1993-12-17 | Mitsubishi Rayon Co Ltd | Production of optical transmission body array |
| JPH0990105A (en) * | 1995-07-17 | 1997-04-04 | Nippon Sheet Glass Co Ltd | Production of rod array |
-
2005
- 2005-02-07 CN CNB2005100076675A patent/CN100342250C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6155610A (en) * | 1984-08-27 | 1986-03-20 | Nippon Sheet Glass Co Ltd | Manufacture of convergent light transmitter |
| JPH05333217A (en) * | 1992-05-29 | 1993-12-17 | Mitsubishi Rayon Co Ltd | Production of optical transmission body array |
| JPH0990105A (en) * | 1995-07-17 | 1997-04-04 | Nippon Sheet Glass Co Ltd | Production of rod array |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1657977A (en) | 2005-08-24 |
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Address after: Tokyo, Japan, Japan Patentee after: Mitsubishi Kasei Corporation Address before: Tokyo, Japan, Japan Patentee before: Mitsubishi Reiyon Co., Ltd. |