Patent ID: 6709518
Filing Date: 2004-03-23
Classification: C03C,G02B

Abstract:
A coating forming device of an optical fiber characterized in that the coating forming device comprises a light source for irradiating ultraviolet light to resin for coating formation molded to a coating forming portion of the optical fiber; a light receiver for receiving the ultraviolet light irradiated from the light source to the resin for coating formation and detecting intensity of the ultraviolet light; an environmental sensor for detecting environmental information including at least the temperature of a coating formation working area; and an optical output controller for feedback-controlling an optical output of said light source on the basis of the environmental information detected by the environmental sensor, the ultraviolet light intensity detected by said light receiver, and control data for controlling the optical output of said light source based on the ultraviolet light intensity and said environmental information,wherein the environmental sensor includes a sensor for detecting the environmental information for directly or indirectly judging generation of dew condensation, and a dew condensation generation judging section for judging the generation of dew condensation on the basis of a signal of this sensor, and a warning section for giving a warning of the generation of dew condensation by receiving judging results of the generation of dew condensation from this dew condensation generation judging section are arranged.