Patent Number: 6,165,394

Title: Method of fabricating a mold for fabricating optical fiber guide blocks

Abstract: In a grindstone for fabricating a mold which has optical fiber engagement portions of an optical fiber guide block used for aligning optical fibers, two main grinding surfaces are provided to form the optical fiber engagement portions contacted with the sides of the optical fibers and a tip end portion which is contiguous to the two main grinding surfaces and which has a contour contained within a predetermined area. The predetermined area has a triangle shape which is defined by two tangent lines along the two main grinding surfaces and a preselected line drawn between two points determined on the two main grinding surfaces. The two points are decided in accordance with a predetermined formula.

Inventors: Shibata; Gakuei (Tokyo, JP), Yamashita; Teruo (Tokyo, JP), Yoshida; Masahiro (Saitama, JP)

Assignee: Hoya Corporation

International Classification: B29C 33/42 (20060101); B29D 11/00 (20060101); G02B 6/38 (20060101); G02B 6/36 (20060101); B29B 011/00 (); B24B 007/22 ()

Expiration Date: 12/26/2017