Hoya Corporation

You Ohgami

Teruo Yamashita

Masahiro Yoshida

Yoshiatsu Yokoo

Kaoru Kagami

Lihong Zhang

Disclosed are a shaping mold for producing an optical fiber guide block which permits highly accurate positioning and fixing of optical fibers, an optical fiber guide block having such excellent properties, processes for the production of these, and an optical fiber array. The shaping mold comprises an elevated region and a circumferential region adjacent to the elevated region, the elevated region having a plurality of convex portions designed for shaping the optical fiber fitting portions and having a side surface forming a boundary with the circumferential region, the boundary being positioned at a level lower than the level of bottoms of grooves formed between one convex portion and another convex portion, said side surface being an additional side surface different from side surfaces of any convex portions designed for shaping optical fiber fitting portions, the optical fiber guide block has a specific form produced by a mold shaping method using the above shaping mold, and the optical fiber array comprises the above optical fiber guide block.

Shaping mold optical fiber guide block processes for the production thereof and optical fiber array

A preform used for producing an optical fiber fixing member having an optical fiber fixing part and a lower-staged part by a mold shaping method, is formed so as to be composed of a large-thickness portion having an upper surface or a peak portion to which that transfer-shaping surface of transfer-shaping surfaces of a shaping mold which is to shape the said optical fiber fitting portion(s) comes into contact at an initial stage of mold shaping, and a small-thickness portion having an upper surface or a peak portion to which that transfer-shaping surface of transfer-shaping surfaces of the shaping mold which is to shape the upper surface of the lower-staged part comes into contact at an initial stage of the mold shaping, the preform being formed in a configuration in which the said small-thickness portion is adjacent to the large-thickness portion, the form of the preform viewed as a plan view parallels with the form of the said optical fiber fixing member viewed as a plan view and the form of the preform viewed as a side view parallels with the form of the said optical fiber fixing member viewed as a side view, whereby the above optical fiber fixing member can be easily produced by a mold shaping method.

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Kanagawa, Japan

You Ohgami