JP2004279553A - Method for manufacturing optical transmitter array original plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method for optical transmitter array original plate by which an optical transmitter array original plate can be manufactured by efficiently using a fixture used to array optical transmitters. <P>SOLUTION: In this manufacturing method for an optical transmitter array original plate, optical transmitter array original plates 2 and 4 are manufactured which have a plurality of optical transmitters arranged in a parallel state between two substrates. The method includes the steps of: forming an optical transmitter array 12 by arraying optical transmitters 6; obtaining an array body sheet having the optical transmitter array temporarily fixed to an adhesive sheet by temporarily fixing the optical transmitter array with the adhesive sheet 18; fixing the optical transmitter array of the array body sheet to one substrate; and peeling the adhesive sheet off the optical transmitter array while leaving the optical transmitter array on the substrate. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for manufacturing an optical transmission element array original, and more particularly, to a method for manufacturing an optical transmission element array original in which a plurality of optical transmission elements are arranged in parallel between substrates.
[0002]
[Prior art]
An optical transmission body array (rod lens array) in which a large number of substantially cylindrical optical transmission bodies (rod lenses) are arranged in one or more stages between two substrates is used for copying equipment, electronic blackboards, facsimile machines, and the like. Used as parts.
As a method for manufacturing such an optical transmitter array, an optical transmitter array original plate in which a large number of optical transmitters are arranged and fixed between two substrate materials is manufactured, and this optical transmitter array original plate is separated into individual substrates. There is a method of cutting into an optical transmitter array. As a method of manufacturing the optical transmission body array original plate, an optical transmission body coated with an adhesive was wound around the outer peripheral surface of a cylindrical roll in close contact, and after the adhesive was cured, it was bonded and fixed in a cylindrical shape. There is known a method in which an optical transmission line is cut in the axial direction of a cylindrical roll, removed from the cylindrical roll, and fixed between two substrates to form an optical transmission array original plate (for example, Patent Document 1). 1).
[Patent Document 1] Japanese Patent Application Laid-Open No. 08-248246
[Problems to be solved by the invention]
However, in such a method, since the optical transmission body is wound around the cylindrical roll in a state where the uncured adhesive is attached, the adhesive adheres to the cylindrical roll. For this reason, before starting the next production, an operation for removing the adhesive that has adhered to the cylindrical roll and has hardened is required. Further, in this method, the adhesive applied to the optical transmission body is cured on the cylindrical roll, so that the cylindrical roll cannot be used during the curing. As described above, according to the above-described method, it was not possible to efficiently manufacture the optical transmission element array original plate using the equipment used for arranging the optical transmission elements.
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has been made in view of the above circumstances. The aim is to provide a method.
[0004]
[Means for Solving the Problems]
According to the present invention, there is provided a method of manufacturing an optical transmitter array original plate in which a plurality of optical transmitters are arranged in parallel between two substrates, wherein the optical transmitters are arranged to form an optical transmitter array. Forming the light transmitting body row temporarily with an adhesive sheet to obtain an arrayed body sheet in which the light transmitting body row is temporarily fixed to the adhesive sheet; and a light transmitting body of the arrayed body sheet. Fixing the row to one of the substrates, and peeling off the adhesive sheet from the row of optical transmitters while leaving the row of optical transmitters on the substrate. A method for manufacturing a body array master is provided.
[0005]
According to such a configuration, the arrangement of the light transmitters is maintained by the adhesive sheet, so that the arranged light transmitters can be removed from the arrangement device without using an adhesive. As a result, the adhesive does not adhere to the device used for arranging the optical transmission bodies. Further, since the arranged light transmitting body row is temporarily fixed by the adhesive sheet, the light transmitting body row can be quickly removed from the device used for the arrangement of the light transmitting body after the arrangement is completed. Therefore, the equipment used for arranging the optical transmission bodies can be used efficiently.
[0006]
According to a preferred aspect of the present invention, the step of forming the optical transmission body row is a step of continuously winding the optical transmission body around an outer peripheral surface of a cylindrical body, and the step of temporarily fixing the outer peripheral surface of the cylindrical body. It is a step of attaching an adhesive sheet to the light transmitting body row formed on the surface, prior to the step of fixing the light transmitting body row to one of the substrates, the array body sheet on the cylindrical body, Cutting along the axial direction of the cylindrical body and removing the cylindrical body from the cylindrical body.
According to such a configuration, it is possible to remove the array body sheet from the cylinder without attaching the adhesive to the cylinder.
[0007]
According to another preferred aspect of the present invention, the method further comprises the step of fixing the other substrate to the optical transmission body row.
According to another preferred embodiment of the present invention, the method further comprises the step of superposing and fixing an optical transmitter row of another arrangement sheet on the optical transmitter row fixed to the substrate. According to such a configuration, it is possible to manufacture, with a simple operation, an original optical transmission element array including an optical transmission element array stacked in a plurality of stages.
[0008]
According to another aspect of the present invention, there is provided a method of manufacturing an optical transmitter array original plate in which a plurality of optical transmitters are arranged in parallel between two substrates, wherein the optical transmitters are arranged. Forming an optical transmitter array, temporarily fixing the optical transmitter array with an adhesive sheet, and obtaining an array sheet in which the optical transmitter array is temporarily fixed to the adhesive sheet; and Cutting into a plurality of array body sheet pieces, applying an adhesive to a light transmitting body on the array body sheet pieces, and light transmitting bodies of the array body sheet pieces through the adhesive. Obtaining a plurality of rows of optical transmitters by superimposing the optical transmitter arrays.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Preferred embodiments of the present invention will be described in detail with reference to the drawings. First, a configuration of an optical transmission element array original plate 1 manufactured by the method for manufacturing an optical transmission element array original sheet of a preferred embodiment of the present invention will be described. FIG. 1 is a schematic perspective view of an optical transmission body original plate 1 manufactured according to a method for manufacturing an optical transmission body array original sheet according to a preferred embodiment of the present invention.
As shown in FIG. 1, in this optical transmission body original plate 1, a columnar optical transmission body 6 of a predetermined length is placed between substrates 2 and 4 in a state where adjacent optical transmission bodies 6 are in contact with each other. They are arranged in a line. The space between the substrates 2 and 4 and each optical transmission body 6 is filled with an adhesive 8, and each optical transmission body 6 is fixed between the substrates 2 and 4.
[0010]
In the present embodiment, as the substrates 2 and 4, a plate made of a synthetic resin such as a phenol resin, an ABS resin, an epoxy resin, or an acrylic resin containing a light-shielding agent such as carbon black or a dye is used.
Each light transmission body 6 is an optical fiber made of, for example, plastic such as (meth) acrylate-based resin or glass, and has a diameter of, for example, about 0.1 mm to 1 mm.
The light transmission structure of the light transmission body 6 may be a continuous refractive index distribution type (graded index type), a stepwise refractive index distribution type (step index type), or another transmission structure.
[0011]
Next, a method of manufacturing the optical transmission element array original plate 1 according to the preferred embodiment of the present invention will be described. FIGS. 2 and 3 are schematic perspective views showing each step of the method for manufacturing the original optical transmission element array according to the preferred embodiment of the present invention.
[0012]
In the manufacturing method according to the present embodiment, first, as shown in FIG. 2, a linear optical transmission body 6 is continuously wound around the outer peripheral surface of a metal cylindrical roll 10 to form a cylindrical optical transmission medium. The transmission body sequence 12 is created. In this embodiment, the adjacent optical transmission bodies 6 are wound around the cylindrical roll 10 so as to be in close contact with each other, that is, without any gap. Note that this winding state is appropriately changed according to the distance between adjacent optical transmitters in the optical transmitter array original plate to be manufactured.
[0013]
The cylindrical roll 10 has a diameter of about 10 cm to 100 cm from the viewpoint of the ease of winding the optical transmitter 6 and the number (productivity) of optical transmitter arrays that can be cut out from one optical transmitter array original plate 1. Is preferred. Further, the length L of the cylindrical roll 10 is set to be longer than the width W of the optical transmission body array original plate 1 to be manufactured, and the optical transmission body 6 is provided on the outer peripheral surface of the cylindrical roll 10. It is wrapped around a central region having a width (length) substantially equal to the width W of one.
[0014]
In the step of winding the optical transmission body 6 around the cylindrical roll 10, one optical transmission body 6 is continuously wound around the outer peripheral surface of the cylindrical roll 10, so that at least the length (required length) wound around this area. Need to be continuously supplied. For this reason, in the winding step of the present embodiment, the optical transmission body 6 is continuously supplied from the manufacturing step. Instead, the optical transmission body 6 having a required length or more may be temporarily wound around a bobbin, and the optical transmission body 6 may be supplied from the bobbin.
[0015]
In the winding of the light transmitting body 6, the cylindrical roll 10 is rotated by a motor (not shown) to wind the light transmitting body 6 around the cylindrical roll 10. At this time, the optical transmission body 6 is wound around a predetermined area on the outer peripheral surface of the cylindrical roll 10 through the dancer guide 14 and the winding guide 16. The dancer guide 14 has a function of adjusting the tension when the optical transmission body 6 is wound around the cylindrical roll 10. The adjustment of the tension may be performed using another known device such as a tensiometer instead of the dancer guide.
Further, the winding guide 16 is movable along the axial direction of the cylindrical roll 10 and has a function of guiding the optical transmission body 6 to a predetermined winding position on the cylindrical roll 10.
[0016]
It is preferable to adjust the tension at the time of winding the optical transmission body 6 to be between 0.29N and 1.96N. If this tension is too small, collapse of the roll is likely to occur. If the tension is too large, when the optical transmission body 6 is removed from the cylindrical roll 10, the arrangement sheet including the optical transmission body 6 is significantly warped due to the stress remaining in the optical transmission body 6. .
[0017]
The light transmitting body 6 is wound around a predetermined area on the outer peripheral surface of the cylindrical roll 10, and the light transmitting body 6 having a predetermined width is arranged on the outer peripheral surface of the cylindrical roll 10 in a line. Is completed, as shown in FIG. 3, an adhesive sheet 18 is stuck on the outer peripheral surface of the cylindrical light transmitting body row 12 to temporarily fix the light transmitting body 6 in the cylindrical light transmitting body row 12. Thus, a cylindrical array body sheet 20 is formed.
The adhesive sheet 18 is sequentially supplied from the supply roll R1 onto the optical transmission body row 12 via the transport roll R2 and the adhesion roll R3, and the surface coated with the adhesive is adhered to the optical transmission body row 12.
[0018]
Next, the cylindrical array sheet 20 wound around the cylindrical roll 10 is cut in the axial direction of the cylindrical roll 10 and detached from the cylindrical roll 10, and the cylindrical array sheet 20 is developed, and the pressure-sensitive adhesive sheet is developed. A rectangular array body sheet 22 (FIG. 4) is formed on the optical transmission body 6 as the optical transmission body row 12 in which the optical transmission bodies 6 are temporarily fixed in an aligned state.
[0019]
Next, the adhesive 8 is applied onto the light transmitting body 6 of the light transmitting body row 12 temporarily fixed to the adhesive sheet 18 (FIG. 5), and the one substrate 2 (or 4) is placed on the applied adhesive 8. By covering, the respective light transmitting bodies 6 of the light transmitting body row 12 of the array body sheet 22 are fixed to the substrate 2 (or 4).
The adhesive force of the adhesive sheet does not disturb the arrangement of the optical transmitters 6 in the temporarily fixed optical transmitter array 12 during the operation of bonding the optical transmitters 6 to the substrate 2 (or 4). Further, the adhesive is set so that the adhesive does not remain on the optical transmission member 6 when the optical transmission member 6 is peeled off in a later step. For example, M-6030 (manufactured by Nitto Denko Corporation) or the like is preferable.
[0020]
After the adhesive is cured, the pressure-sensitive adhesive sheet 18 is peeled off from the optical transmission body 6. At this time, in order to peel off the adhesive sheet 18 without affecting the alignment accuracy of the light transmitting bodies 6 in the light transmitting body row 12, an adhesive sheet whose adhesive strength is weakened by heat or light is used. , The pressure-sensitive adhesive sheet may be peeled from the array.
Further, an adhesive 8 is further applied on the optical transmission body 6 fixed in an array state on one substrate 2 (or 4), and the other substrate 4 (or 2) is arranged on the applied surface. The optical transmitter array 12 is fixed by the two substrates 2 and 4 to obtain the optical transmitter array original plate 1.
[0021]
The adhesive 8 used when bonding the optical transmission body 6 to the substrates 2 and 4 has a low viscosity such that it can be easily filled into the gap between the optical transmission bodies 6 and applied in a thin film form. It is necessary that the material does not chemically attack the material of the optical transmission member 4 or the optical transmission member 6. Further, in order to prevent crosstalk light between the adjacent optical transmission bodies 6 and light passing through the layer of the adhesive 8, black or a dark color close thereto is preferable. In order to impart sufficient light-shielding properties to the adhesive, a light-shielding material such as carbon black may be included.
[0022]
The optical light transmitter array original plate 1 manufactured as described above is cut into strips in a direction orthogonal to the axis of the light transmitter 6 as shown by a dotted line in FIG. 'Is obtained. The cutting of the optical transmission element array original plate 1 is performed using a cutter such as a diamond saw. The cut end face of the optical transmission body array 1 'having a predetermined length, which is cut and separated into strips, is subjected to a surface treatment such as polishing, mirror polishing, and coating so as to exhibit desired optical performance.
[0023]
The present invention is not limited to the above embodiment, and various changes and modifications can be made within the scope of the claims.
[0024]
In the above-described embodiment, the method of manufacturing the optical transmitter array 1 ′ in which the optical transmitters 12 are arranged in a row (one stage) between the substrates 2 and 4 is not limited thereto. Also, the present invention can be applied to the manufacture of an optical transmitter array in which two or more rows of optical transmitters 12 are stacked and arranged between the substrates 2 and 4.
[0025]
In the manufacture of such an optical transmitter array, the optical transmitter row is fixed to one substrate, the adhesive sheet of the optical transmitter sheet is peeled off, and then the adhesive 8 is applied to the surface from which the adhesive sheet has been peeled off. Next, the other array sheet 22 'is overlapped with the optical transmission lens array 12' facing downward, and the adhesive is cured, and the optical transmission arrays 12 and 12 'are stacked in two stages. Get the columns (FIG. 6). Thereafter, the adhesive sheet 18 'is peeled off. Such an operation is repeated until a desired number of stages of the optical transmitter array is obtained.
Alternatively, the rectangular array body sheet may be cut into a plurality of sheet pieces, and the light transmitting body rows of the sheet pieces may be overlapped and fixed with an adhesive to form a plurality of stages of light transmitting body rows.
[0026]
Furthermore, in the above embodiment, a plastic optical fiber is used as the optical transmission body, but the present invention is not limited to this, and can be applied to an optical fiber made of glass.
Further, in the above embodiment, prior to the temporary fixing with the adhesive tape, the optical transmission body () is wound around a cylindrical roll and arranged, but the present invention is not limited to this. A configuration in which the transmission bodies are arranged on a polygonal roll or a plane and temporarily fixed with an adhesive tape may be used.
[0027]
【Example】
Hereinafter, the present invention will be further described with reference to examples.
(Example 1)
Using the apparatus shown in FIGS. 2 and 3 used in the above embodiment, an optical transmission array original plate was manufactured. As the light transmitting body, a plastic optical fiber of a refractive index distribution type having a diameter of 350 μm made of a methacrylate resin containing methyl methacrylate as a main component, and a bakelite plate as a substrate. The adhesive sheet used was M-6030 (manufactured by Nitto Denko), and the adhesive used was an epoxy adhesive << Epiform >> (manufactured by Somar) kneaded with 2% by mass of carbon black.
First, the cylindrical roll 10 was rotated, and the optical transmission body 6 was wound around the cylindrical roll 10 while controlling the tension by the dancer guide 14. The tension at this time was 0.39N.
The light transmitting body is wrapped around the area of 230 mm in width (length) of the cylindrical roll 10 to form a cylindrical light transmitting body row 12, on which an adhesive sheet 18 is attached with the light transmitting body row 12. By sticking on the upper side, a cylindrical array body sheet 20 was obtained. Further, the cylindrical array sheet 20 was cut in the axial direction of the cylindrical roll 10 to obtain a rectangular array sheet 22 in which the light transmitting body rows 12 were temporarily fixed on the adhesive sheet 18.
At this time, the adhesive was not attached to the cylindrical roll, and the operation of winding the optical transmission body around the cylindrical roll could be continued without waiting for the curing of the adhesive, so that the production speed was improved.
An adhesive is applied to the light transmission body of the rectangular array body sheet, the substrate is covered on the coated surface, the light transmission body row is fixed to one of the substrates, and further, after the adhesive sheet is peeled off, the adhesive sheet is peeled off. An adhesive was applied to the optical transmission line, and the other surface was covered with the adhesive and cured to obtain an optical transmission array original plate.
[0028]
(Example 2)
An adhesive was applied on the optical transmission line of the pressure-sensitive adhesive sheet obtained in the same manner as in Example 1, the adhesive was bonded to one of the substrates on the coated surface, and then the pressure-sensitive adhesive sheet was peeled off.
Next, an adhesive is applied to the surface from which the pressure-sensitive adhesive sheet has been peeled, and an array body sheet on which another light transmitting body row is temporarily fixed is pressed thereon so that the light transmitting body row faces the adhesive applied surface. Pressed and fixed. Thereafter, the pressure-sensitive adhesive sheet was peeled off, and the other substrate was bonded and fixed to the peeled surface with an adhesive to obtain an original optical transmission array having two rows of optical transmission arrays.
[0029]
(Example 3)
In the same manner as in Example 1, after obtaining an array body sheet in which the light transmitting body row was temporarily fixed with the adhesive sheet, this array body sheet was cut into a plurality of sheet pieces having a predetermined length. Next, an adhesive is applied to the light transmitting body rows on each sheet, the light transmitting body rows are stuck together and pressed, the adhesive is cured, and then the adhesive sheet is peeled off. An optical transmission sheet having rows was obtained. The pressure-sensitive adhesive sheet of the optical transmission sheet having the two-stage optical transmission body row thus obtained is peeled off, an adhesive is applied to the peeled surface, and the adhesive is cured while the substrate is pressed against the applied surface. As a result, an optical transmitter array original plate having two stages of optical transmitter arrays was obtained.
[0030]
(Comparative example)
An optical transmission body having a surface coated with an adhesive continuously by a roll coater was wound around the surface of a cylindrical roll. At this time, a tension of 0.37 N was applied to the optical transmission body using a top to which a spring pressing force was applied.
The same optical transmitter and substrate as in Example 1 were used. As the adhesive, Coronate 4401 + Nipporan 4221 (manufactured by Nippon Polyurethane Industry Co., Ltd.) for fixing the arrangement of the light transmission body, and Epiform << Main agent R-2100, curing agent H-105 >> (for bonding the light transmission sheet and the substrate) ( (Manufactured by Somar Co., Ltd.) and kneaded with 2% by mass of carbon black.
After the adhesive was cured on the roll, the cylindrical optical transmission line was cut in the axial direction of the roll and removed from the roll to obtain a rectangular optical transmission line. This light transmitting body row was sandwiched and fixed between two substrates coated with an adhesive, and the adhesive was cured to obtain a light transmitting body array original plate.
In this manufacturing method, the time required for winding the optical transmission body around the cylindrical roll was about the same as that of the above-described embodiment, but it took about 3 hours to cure the adhesive. Since the adhesive remained on the roll, it took about 5 minutes to remove the adhesive from the roll.
[0031]
【The invention's effect】
As described above, according to the present invention, there is provided a method of manufacturing an optical transmission element array original plate that can efficiently manufacture an optical transmission element array original plate using an instrument used for arranging optical transmission elements.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view of an optical transmitter array original plate manufactured by a method for manufacturing an optical transmitter array original plate according to a preferred embodiment of the present invention.
FIG. 2 is a perspective view for explaining a manufacturing process of an optical transmission body array original plate according to a preferred embodiment of the present invention.
FIG. 3 is a perspective view for explaining a manufacturing process of an optical transmission element array original plate according to a preferred embodiment of the present invention.
FIG. 4 is a perspective view for explaining a manufacturing process of an optical transmission body array original plate according to a preferred embodiment of the present invention.
FIG. 5 is a perspective view for explaining a manufacturing process of an optical transmission body array original plate according to a preferred embodiment of the present invention.
FIG. 6 is a schematic perspective view showing a manufacturing process of an optical transmission body array original plate according to another embodiment of the present invention.
[Explanation of symbols]
1: original optical transmission array 2: original substrate 4: second substrate 6: optical transmission 8: adhesive 10: cylindrical roll 12: optical transmission array 14: dancer guide 16: winding guide 18: adhesive Sheet 20: Array sheet

Claims (5)

A method for manufacturing an optical transmitter array original plate in which a plurality of optical transmitters are arranged in parallel between two substrates,
Arranging the optical transmitter to form an optical transmitter array;
Temporarily fixing the light transmitting body row by an adhesive sheet, and obtaining an array body sheet in which the light transmitting body row is temporarily fixed to the adhesive sheet;
Fixing the light transmitting body row of the array body sheet to one substrate,
In a state where the light transmitter row is left on the substrate, a step of peeling the adhesive sheet from the light transmitter row,
Having,
A method for manufacturing an optical transmission element array original plate, comprising: The step of forming the optical transmission body row is a step of continuously winding the optical transmission body around an outer peripheral surface of a cylindrical body,
The step of temporarily fixing is a step of attaching an adhesive sheet to an optical transmission body row formed on the outer peripheral surface of the cylindrical body,
Prior to the step of fixing the light transmitting body row to the one substrate, the array body sheet on the cylindrical body is cut along the axial direction of the cylindrical body and removed from the cylindrical body. Has,
A method for manufacturing the optical transmission element array original plate according to claim 1. Fixing the other substrate to the optical transmitter row fixed to the substrate, further comprising:
A method for manufacturing an optical transmission element array original plate according to claim 1. The method further comprises the step of superimposing and fixing the light transmitting body row of another array sheet on the light transmitting body row,
A method for manufacturing an optical transmission element array plate according to any one of claims 1 to 3. A method for manufacturing an optical transmitter array original plate in which a plurality of optical transmitters are arranged in parallel between two substrates,
Arranging the optical transmitter to form an optical transmitter array;
Temporarily fixing the light transmitting body row by an adhesive sheet, and obtaining an array body sheet in which the light transmitting body row is temporarily fixed to the adhesive sheet;
Cutting the array body sheet into a plurality of array body sheet pieces,
Applying an adhesive to the light transmission body on the array sheet piece,
Obtaining a plurality of optical transmitter rows by superimposing the optical transmitters of the array sheet pieces via the adhesive.
A method for manufacturing an optical transmission element array original plate, comprising:

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