Title: Process for producing a gas tight light transmitting optical fiber plate

Abstract: A process for producing a gas tight light transmitting optical fiber plate comprising arranging the optical fibers or bundles of the optical fibers in a die, heating and compressing the optical fibers at a temperature of between the transition point of the glass of the optical fibers and the softening point of the glass of the optical fibers thereby to weld the optical fibers together, and maintaining the welded optical fibers within that temperature range at a pressure higher than the pressure during the heating period which is sufficient to cause the shrinkage of voids by the surface tension of the optical fibers.

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Inventors: Osagawa, Masaaki (Saitama, JA)
Kobayashi, Kunimitsu (Saitama, JA)
Nakagawa, Kenji (Saitama, JA)

Application Number: 480448
Filing Date: 1974-06-17
Publication_date: 1976-03-09
Assignee: Hoya Glass Works, Ltd. (Tokyo, JA)
Primary Class(es): 65/410 385/123, 385/141
Other Classes:
US Patent Ref:

3224851	Dec, 1965	Hicks	65/4.
3625669	Dec, 1971	Norton	65/4.
3669639	Jun, 1972	Inoue et al.	65/DIG.

Other Refs:
Primary Examiner: Lindsay, Jr., Robert L.
Assistant Examiner:
Attorney: Sughrue, Rothwell, Mion, Zinn & Macpeak