| 摘要 |
PURPOSE:To obtain an inexpensive and highly accurate multicore optical connector by forming a metallic mold cavity by arranging plural pieces of cylindrical master, whose diameter is a little larger than the outer diameter of an optical fiber and manufacturing a plastic substrate which holds end parts of optical fibers with another plastic substrate. CONSTITUTION:A groove 21 having a width of (nXD+nXalpha) and depth of (D+alpha)/2mum is installed to the center of a core 2 and the groove 21' is installed to a keep plate 4 also. The alpha is a constant fixed by the molding shrikage of a plastic to be used. The diameter of cylindrical masters 3 arranged in the groove 21 is made one to several mum larger than the diameter D of an optical fiber. The (n) represents the number of optical fibers. A cope 7 and drag 8 are clamped with this cavity core 1 being used as an inner die and a cavity 22 is packed with a plastic material through a spool 9, runner 10, and gate 5. After the plastic material is cooled and hardened, a plastic substrate 12 is extruded. By bringing cores 15 and 15', on which a bonding agent is applied, into abutment to a minute hole formed by putting one plastic substrate 12 upon another plastic substrate 12 from both sides and connecting them with each other, an inexpensive and highly accurate connector can be obtained.
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