JPS58114002A - Optical transmission body and its production - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

The present invention relates to optical transmission properties consisting of a core material layer and a sheath material layer. In recent years, there has been remarkable progress in the development of genyu-kusou, which utilizes yuan-transmissive fibers. Original transmission technology Q) Application fields are optical communications, data highways, gu cl dragon x: xy) o-A
/1. T-Fiss Automation Polishing, Combination Tamer! It covers a wide range of industries, and the area where it is used for guest use is expanding by leaps and bounds. In these wide-ranging application fields, it is natural to develop optical transmitters that can carry Hikari No. 11 as far as possible, but at the same time, it is necessary to develop optical components such as optical sensors, Issue tIL! #, former combiner, image. Conventionally, as integrated transmission materials, so-called original transmission ridge fibers based on quartz glass, multi-component glass, or synthetic wood have been distributed in sheet form using various methods, and furthermore, the material has been It is generally known that the plant sheets are laminated and arranged in a row. However, Kuroiso glass-based woven fibers suffer from bending stress, have poor workability, have a low processing yield, and are expensive, so synthetic #& Original transmission fibers are widely used. However, compared to the Kuroiso glass thread, the transmission column fiber made of copper resin is more flexible in the valve shape, and the t1 is several tens of microns, and the end
Even a few lOυμ4! Disassembling and assembling thinly thick filaments is a very labor-intensive job, and most of the finished products manufactured by JILI are made in the KA shape. Therefore, image scogs represented by internal mirrors, readers represented by value-cutting heads, etc., duplexers, combiners, and original Suidzu equipment used in data transmission are defective or defective. Di of former Senner, etc. of knowledge, & direction detection
Even if you put ``ibill'' 5 into part 1, it will be more soulful Note≦
2.N1 durable and easy-to-slide sheet type planting material t'4
The optical transmission base material of JL is heated in a bridge shape. The present invention is based on the versatility of optical transmission Go players such as

[This was originally developed as a result of intensive study. The purpose of the present invention is to process I! To provide an integrated and distributed optical transmission body that is easy to handle and has a high processing yield, and to manufacture virtuous ll16nIf optical components at low cost from such an integrated distribution optical transmission body. It gets thicker. In one aspect, the present invention relates to an integrated and distributed optical transmission body (; this optical transmission body includes a core material layer (1), a sheath material layer (2),
) and a resin envelope (3), the core material layer (1) is made of a transparent polymer, and the core material layer (11) has a refractive index that is at least one order lower than that of the core material layer (11). Target 1: The light guide path formed by the sheath material layer (2) made of a transparent polymer is
In another aspect, the present invention has the above-mentioned structure, in which three or more tree canopies are arranged in parallel in parallel in the bridge. This manufacturing method uses a composite extruder equipped with two melt extruders, and applies 1 liter of polymer melted by the extruder 1111 to the core material layer 11. ) and Shuenbao J11111m
t3) 1: Distribute and supply, melt #IA with the extruder of ticket 2, and add 2 pieces of electric composite to sheath material 11 (supply 21C and combine with cedar, core material # (1) and sheath material The special feature is that three or more are integrated and arranged in parallel in the light guide path am & trench (3) formed by the layer (2). As shown in Figure 1, it is comprised of a core material layer (11), a sheath material layer (2), and a resin envelope part (31) disposed in the inner area. In the body, core material 4 (1)
The source is transmitted through the sheath material 1-(2), and the source is totally reflected by the sheath material 1-(2), and the source in the core material layer tlJ is confined and forms a light guide path. 4yt and road are li! Skin 8L salt-
(3) From C2, mulberry piles are arranged in parallel to each other and connected. Core material r@ (as for 11, a solid HAG'T dry body is a transparent pottery; it is essential that it be of n7t. Such polymers include, for example, methacrylic polymers, polystyrene, or Polycarbonate etc. and (-Azonk
An amorphous polymer such as a coelectric polymer consisting of T as the main component is preferred. The methacrylic polymer is preferably a polymer in which at least 70% of the monomer at is composed of methyl methacrylate. It is possible to copolymerize other monovinyl units within a range not exceeding 301Lllllqb, but examples of suitable bases that can be copolymerized with methyl methacrylate include methyl acrylic, ethyl acrylic, and the like. I can make a fist. Although Nire et al.'s co-combined attenuator improves the processability and heat resistance of methacrylic polymers, the addition of methacrylic polymers tends to reduce the optical transmission performance. < is preferably copolymerized within a range of 10 weight upwind. As the sheath material N(2), a substantially transparent polymer with a refraction 2111 that is 11 or more smaller than the refractive index of the core component is used, preferably a refraction that is 2 or more smaller than the refractive index of the core component. The rate 'IkM and Q] is good. For example, when a methacrylic polymer is used in the core material layer (1) (2), the sheath material layer (= is, for example,
No. 8978, Special Publication No. 56-8321, Special Publication No. 66-8
No. 322, Japanese Patent Publication No. 8323-1983, and Japanese Patent Publication No. 1983-8323
fc4b is obtained by polymerizing esters consisting of methacrylic acid and fluorinated alcohols as disclosed in No. ei0243, etc., with an appropriate degree of orthogonality to match the excipient conditions.
It can be used if the copolymer composition is selected. Further, polyvinylidene fluoride or a copolymer of vinylidene fluoride and a vinyl monolayer such as tetrafluoroethylene, propylene hexafluoride, or vinyl fluoride is used as the Roe rudder. Additionally, silicone-based low refractive index polymers can also be used. tlAtv*(x+≦Niboristerene, Sderene both L &
When using an amorphous point polymer such as a copolymer of methacrylate-based methyl and styrene, or polycarbonate, the above-mentioned low-refractive single polymer can of course be used, but the methacrylic polymer ethylene-vinyl acetate copolymer General-purpose and inexpensive polymers such as polymers can be used. *The fat and buried part (3) is made of a polymer having the same composition as the core material 4++11, and serves to hold the optical transmission part therein and to connect adjacent optical transmission parts. Since the resin wrapping layer (1) has the same composition as the core material layer (1), a stable nozzle nozzle described later can be used in an industrially simple and straightforward process. It is possible to obtain a high-quality integrated and distributed optical transmitter at a very low cost.The integrated and distributed optical transmitter of the present invention is composed of a pair of core component groove 111i1N extruders and a sheath component melting extruder. The core component is melted in a melt extruder and fed to the spinning head using a metering bong 1, and the sheath component is similarly fed to the spinning head. It is distributed into a core material layer (1) and a resin group m5 (3) by a spinneret having a structure as shown in Fig. 2 or 43, and is shaped into a three-layer structure and discharged. Figure 812 shows the molten core component polymer (
FIG. 3 is a cross-sectional view showing an example of a spinneret in which the spinneret is distributed between a core layer (1) and a resin-embedded portion (3). Figure 3 is a sectional view showing an example of a spinneret in which the molten core component polymer supplied to the spinning rod C2 is divided in advance into two parts, one for the core and one for the fat-embedded portion. A plurality of ejected three-layer optical transmission bodies are stacked in parallel to each other.
- For arranging 62, various methods can be adopted. The method of 11 is to spin parallel 1: laminated pattern to 1L in the spinneret,
Discharge it in a U-shape with a U-shape, and use a method to fill it with solidification. In method @2, each B from the spinneret
Discharged as a light transmitting fiber with no structure, &
Surface i/) lit & N mound is hit by cooling surface #J
This is a method in which the fibers are stacked parallel to each other on two guides, the fibers of each upper column are rolled out, cooled completely between them, and then wound. @3C/) The method is from the spinneret to one +:tL-tjrLa! It is discharged as a light-transmitting a-edge with a vertically separated three-layer structure, cooled and solidified, and then pulled by a Nigg roller, etc. Then, heat the NIc fibers again while placing them parallel to each other in two piles, and tighten the citrus fibers on the surface with each other.Section 3 (1) It is also possible to stretch the F!J direction 6; during reheating using the force method directly. In this method, the wound three-layer structure fibers are separately collected, bundled into bundles, and heated to form an i-layer of #1M fat agglomerates on the surface. Each of the above methods has its pros and cons, but if you keep the purpose in mind, you can consider the methods listed below. In addition, 1 view Q) Care must be taken to ensure that the 4 degrees are so strong that adjacent core material layers (1) do not bind to each other and hinder optical transmission. For Friend 42, it is necessary to carefully examine the surface of the yarn during the melt layer and the strength of pressing. Disconnection of the optical transmission body part of the optical transmission body integrated and distributed according to the present invention
The shape is optimally circular if transmission loss is taken into account, but depending on the purpose of use C, it is perfectly acceptable to change the shape to a triangle, quadrilateral, ellipse, or other shape into a mountain shape. Its size can be freely selected from a few microns to several microns in terms of the core material IK diameter. For example, for optical transmission bodies used in image guides, if high resolution is required, a diameter of 100# or less is required; 4 noh is lI! If it is not required, a diameter of several 100 μm may be sufficient for ≦2. The thickness of the sheath material can range from a few microns to aloo, m, and II degrees, but the thickness of the sheath material can vary from a few microns to aloo, m, and II degrees.
1: When using a monovalent sheath material, it is advantageous to make it as thin as possible from a cost perspective. In the optical transmission body of the present invention, since the resin wrapper surrounding the sheath material P11 is configured as an adhesive part, even if the sheath material layer V is made thinner, the optical transmission properties of the core and sheath, which greatly affect the Extraverted smoothness! : It has the advantage of maintaining excellent optical transmission properties without causing disturbance. This advantage becomes *IF when used versus a high quality material such as the above-mentioned fluorinated polymer. Various insulting names can be set depending on the purpose of use. For example, in a read head sensor or the like, the pitch of the optical transmission section is a factor, but this is adjusted depending on the thickness of the resin envelope. It is possible to set the grade of IIl Tumor Hori Zheng to about 4. If there is a part that requires 7 retility like the image guide, it will not come off easily in the later assembly process, but after the assembly is finished, 70) Miyahogu-cho, also known as the fusion layer part from C2. The food inventory is slowed down by the player who removes the ball; In the present invention, the number of mutually independent 4-way routes may be three or more, preferably five or more, more preferably ten or more. However, the post-processing σ] effect is good. In addition, if the number of light guide paths is too large, the optical transmission body 1118 will be damaged, so flexibility and prettiness are important! The number is self-limiting in the applications envisaged. The upper limit of the number of light guide paths is the fiber diameter (
In other words, it varies depending on the diameter of the light guide path, but is generally about several hundred. The cross-sectional shape of the optical transmission body formed by each independent light guide V Quadrilateral shapes are preferred because they are harmful to handle in post-processing. Although Figure 1, Figure 141g1, and Figure 2 are cross-sectional views showing specific examples of the arrangement of the light guide paths in the optical transmission body of the present invention, the arrangement form of the present invention is limited to these. isn't it. The optical transmission body of the present invention, which is composed of a large number of light guide paths arranged in parallel (parallel sections; integrated arrangement), can be used as a focusing section for image transmission such as a TT image guide (particularly one in which the number of integrated arrangement is large). However, by further integrating and arranging optical transmission bodies with a small number of integrated arrays, it is possible to create even higher-order optical transmission body assemblies such as image guides and original Sennar 1 demultiplexers. 5 is a blood diagram of an optical transmission assembly assembled by integrating and arranging a large number of optical transmission bodies shown in FIG.
Figure N7 is an example of an image guide assembled by arranging a large number of optical transmission bodies according to the present invention. The present invention) optical transmitters can be integrated into a large number of image guides, demultiplexers, etc.
, and other high-order optical transmission body assemblies such as sensors.
There is an advantage that the number 4 can be performed twice and that highly accurate optical transmission assemblies can be obtained at a high yield. The present invention will now be described in detail with reference to Examples. In addition, parts in Sou 11 examples indicate parts by weight. Example ≦ Optical transmission in two? ! The evaluation of 1 絽 was done using the following method. Evaluation of optical transmission lossThe transmission loss of the rutted fiber is shown in Figure 8.
Friends defined by kllll two. The light emitted from the halogen lamp (102) driven by a stabilized electric current 111 (101) is parallelized by a lens (103) and passed through an interference filter (104).
I:L is made monochromatic and focused at the focal point of a lens (1Q&) having the same numerical aperture as the light transmission fiber (100). The focal point of the lens is placed so that the incident end face (106) of the dual transmission Ilk fiber is located, and the original transmission fiber (100) is made incident. The particles entering from the entrance end face (106) are attenuated and exit from the exit direction (107). (σ) The emitted light is converted into a current by a photodiode (108) with a sufficiently large area, and then a current-to-voltage converter amplifier (109) l
:Thus, after being amplified, it is read as a voltage value by the voltage needle (110). The transmission loss fog chamber is performed once in the next step JiIIIj. First, the length of the optical transmission textile (100) t'r0≦2:
, both ends IfIt' perpendicular to the fiber axis 6; cut, smooth surface ≦
= Finishing, the device is mounted so that the input direction (106) and the output end face (107) do not move during the measurement. Dark room 6: Turn on the voltage needle and mark the indication 11. This voltage value is 11
shall be. Next-2, turn on the indoor lights and emit 1114m (
107)! Remove it from the device and draw a point of length I from this direction (
111) and cuts off the optical transmission line m (100). and,
Apparatus C: Finish the end face of the installed optical fiber perpendicular to the fiber axis so that it faces the beginning, and install it in the apparatus as the new output 4 surface. These works were made by Tochu,
In order to keep the incident light t constant, care must be taken not to move the incident end direction (106). Return to the dark room and turn the voltage needle 41)
The instruction value V reading is 12. The original transmission loss 4 is calculated using the following formula. Here j: The righteousness of optical fiber + m) 1111! : Light amount (a-output value) The conditions at Motoya Gorge are as follows. Interference filter (main wavelength): 646 nml0 (
lt, *Total length of fiber: 15 Gen j (cutting length of I) = lO section D (diameter of bobbin): 190 - In order to make 1 k of noodles into 62 compact bobbins, 52 pieces of bobbin are used, incidence 41
The distance between m (1061) and the output increaser (107) is 1 04!
Degree 6 2nd work≦; Then, the remaining Shigakusen mv bobbin (-
Leave it as low 4I without showing it. Sadani 41i1 100% methyl methacrylate was produced in continuous bulk polymerization using an ES square material separation device consisting of a reaction tube equipped with a spiral ribbon micro-stirring ridge and 2@screw one vent #M extrusion device.
1%l, t-butelmerka 1 tane 0.401@, t-t
A monomer mixture consisting of 17 parts of -1f rubber 1 + t ()-01) was polymerized at a polymerization temperature of 155°C and an average residence time of 4.
React for 0 hours, then adjust the temperature of the pent extruder to 240°C in the vent part and 230°C in the extrusion part.
It was supplied to the core-sheath composite spinning head at 23θ°C through the gear pump section V which was maintained at 230°C. Methacrylic &2,2.2- produced from one-way methacrylic acid chloride and 2.2.2-) refluoroethanol
) Rifluorog-edel [polymerized using azobisisobutyronitrile as a catalyst in the presence of a small amount of n-octyl mercaptan to obtain a sheath component polymer with a refractive force of 1.413. This sheath component polymer was passed through a screw melt extruder set at 200°C with a gear pump and heated to 230°C. The composite spinning head was fed. Simultaneous I: Melting of the supplied core and sheath - polymer smoldering - 1 shown in Figure 7 is the spinneret (orifice @ 1.
At m, the guide ≦; more 2 layers - 2 convergence, and 621 layers. After the two-layer sheet consisting of 64 light guide paths was completely cooled, it was pulled through a nip roller at a speed of 100 mm/meter and then transferred to a tape inder. As a result of mirror observation, the sheet-like light transmitting body was found to have a core diameter of 80 μm, a ring portion thickness of 3 μm, a thickness of the outer resin wrapper of 12 μm, and a diameter of 12 μm. It is a non-N sheet-like optical transmission body consisting of two layers covered with 82 light guide paths each, with a length of 0, jl- and a sheet length of 3.5-. Cut this sheet-like optical transmitter into 6 pieces with a length of 20 m.1. As a result of entering the light vS- from one end and observing the output yt from the other end, there were almost no irregularities in the intensity of the light between the 64 lines. Measurement of optical transmission loss of this V-shaped optical transmission body
The intermediate part of the sheet-like optical transmission body was loosened by 1 jL, and 64 pieces of V1 were removed, but the change in the output likelihood could not be corrected. Example 2 An optical transmission body V was obtained by using a spinneret with an Oris number of 10 in Example 1 and changing the conditions after spinning (t). That is, in this example, the discharged polymer was cooled and solidified without being focused and fused using a nozzle, and then it was drawn out at 10 millimeters per hour, and then placed in a stretching box heated at 145°C. It was stretched 1.5 times. At this time, place a focusing guide at the outlet of the drawing box and place 10 filaments at 111I.
! East and each other! = #lA layer was formed. I picked it up with the fIkgg nip roller and rolled it with wine goo. As a result of observing the cross section of the obtained optical transmitter using a microscope, it was found that 10 filaments were arranged in a rectangular arrangement in a triangular shape as shown in Fig. 114, and the spacing between each filament was uniform and the filaments were arranged regularly. was. The core material strength of the obtained optical transmission body was 800fi. When the transmission loss of all 10 wires was measured, it was fl 7 Q dB/km, and the transmission loss was 6: Very &: Excellent, and 1: 4: Low. An image guide VM was constructed using the triangular transmitter TGS obtained above. This image guide had an image (j) of 11, and the deviation was smaller than that of 'PiJC2. Specification Example 1 In Example 2, the process was carried out in exactly the same manner as in Example 2, except that a normal core-sheath two-layer corrugated nozzle was used as the nozzle nozzle. I got an optical transmission body. This optical transmitter was placed evenly in a 20-hole cage, and the light was emitted from the other side, resulting in lO
Kimotoma jtQ) Fl Sa no Hori is non-74 sea, large, middle 5-
It is a good friend of T, which does not transmit at all. The transmission loss was constant for all 10 cables and was 3.500 dB/-, which was extremely unrealistic.

[Brief explanation of the drawing]

Figure 111 shows the horizontally arranged optical transmission body of the present invention.
- An example of a cross-section of 1m; IIZ diagram and Figure 8 are cross-sections showing an example of the structure of a three-layer optical transmitter in an integrated arrangement. Accumulated arrangement of inventions n friend IIG
The figure is a cross-sectional view of the focusing part of an image guide assembled by further integrating and arranging the optical transmitters shown in FIG. 4; FIG. 7 is an image guide created using the optical transmitter of the present invention. Figure 118 is a schematic diagram of a device for adding up the transmission loss of an optically transmitting fiber. Reference numbers and symbols in the figures are as before. 1: core material layer, 2: sheath material layer, 3: W fat envelope m part, IA; sheath material supply port, B, ksl, 13. : Core material supply port, 100: Optical transmitting fiber, 102: Halogen lance 104: Interference filter, 106 Two-person 4-face, 107: Output end face, 108
: Photodiode, 109: Amplifier II &amp; 110:
tlElt. Mitsubishi Rayon Co., Ltd. Patent Agent Patent Attorney Akira Aoki Patent Attorney Kazuyuki Nishidate Patent Attorney 1) IF Yu Patent Attorney Akira Yamaguchi No. 10 Figure 2C 4i 5N! 1

Claims (1)

[Scope of Claims] 1. Core material (1), sheath material layer (2) grout side part (3)
), comprising a core material layer fi+ made of a transparent electrolytic material, and a core material layer (1) a) made of a substantially transparent electrolytic material having a refractive index lower than 11. In the sheath material layer (3), which has the same composition as the core material 711 tl), three or more parallel 1
;A patented optical transmission body that is distributed by Rakusaku. 2, 2 #11g1l! ! Using a jL 9-piece extruder, distribute and supply the Maki 1 (1) electric compound melted by the #11 extruder to the core material 4 (11 and 41i fat-packed tube (3)). Recommendation 2Q) Supply the solution of s2 melted in the extruder to the sheath material layer (TAO) for composite shaping, and form the core material layer (1) and the sheath material 4.
The conducive path formed by (2) is 1! (3) To have three or more systems aII installed in the house (3).